cpython-lru_cache-weakref: Python/compile.c annotate

annotate Python/compile.c @ 35772:f64fb284ed15 legacy-trunk

Don't stop generating code for import statements after the first "import as" part. Fixes one bug from #1333982.

author	Neil Schemenauer <nascheme@enme.ucalgary.ca>
date	Sun, 23 Oct 2005 03:45:42 +0000
parents	7ee6880cb16f
children	0aef351223da

rev	line source
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1 /*
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2 * This file compiles an abstract syntax tree (AST) into Python bytecode.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3 *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4 * The primary entry point is PyAST_Compile(), which returns a
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	5 * PyCodeObject. The compiler makes several passes to build the code
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	6 * object:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	7 * 1. Checks for future statements. See future.c
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	8 * 2. Builds a symbol table. See symtable.c.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	9 * 3. Generate code for basic blocks. See compiler_mod() in this file.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	10 * 4. Assemble the basic blocks into final code. See assemble() in
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	11 * this file.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	12 *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	13 * Note that compiler_mod() suggests module, but the module ast type
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	14 * (mod_ty) has cases for expressions and interactive statements.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	15 */
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	16
5373 5880384d7c71 Quickly renamed the remaining files -- this directory is done. Guido van Rossum <guido@python.org> parents: 5287 diff changeset	17 #include "Python.h"
86 a6934380c6e7 "Compiling" version Guido van Rossum <guido@python.org> parents: 73 diff changeset	18
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	19 #include "Python-ast.h"
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	20 #include "node.h"
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	21 #include "ast.h"
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	22 #include "code.h"
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	23 #include "compile.h"
16421 aa844711463a Move a bunch of definitions that were internal to compile.c to Jeremy Hylton <jeremy@alum.mit.edu> parents: 16408 diff changeset	24 #include "symtable.h"
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	25 #include "opcode.h"
5438 e926c331ebbf Instead of importing graminit.h whenever one of the three grammar 'root' Guido van Rossum <guido@python.org> parents: 5373 diff changeset	26
5164 8c277f29b535 Add global Py_OptimizeFlag. SET_LINENO is omitted again unless this is Guido van Rossum <guido@python.org> parents: 5119 diff changeset	27 int Py_OptimizeFlag = 0;
8c277f29b535 Add global Py_OptimizeFlag. SET_LINENO is omitted again unless this is Guido van Rossum <guido@python.org> parents: 5119 diff changeset	28
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	29 /*
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	30 ISSUES:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	31
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	32 character encodings aren't handled
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	33
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	34 ref leaks in interpreter when press return on empty line
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	35
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	36 opcode_stack_effect() function should be reviewed since stack depth bugs
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	37 could be really hard to find later.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	38
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	39 Dead code is being generated (i.e. after unconditional jumps).
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	40 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	41
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	42 #define DEFAULT_BLOCK_SIZE 16
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	43 #define DEFAULT_BLOCKS 8
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	44 #define DEFAULT_CODE_SIZE 128
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	45 #define DEFAULT_LNOTAB_SIZE 16
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	46
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	47 struct instr {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	48 int i_jabs : 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	49 int i_jrel : 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	50 int i_hasarg : 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	51 unsigned char i_opcode;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	52 int i_oparg;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	53 struct basicblock_ i_target; / target block (if jump instruction) */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	54 int i_lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	55 };
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	56
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	57 typedef struct basicblock_ {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	58 /* next block in the list of blocks for a unit (don't confuse with
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	59 * b_next) */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	60 struct basicblock_ *b_list;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	61 /* number of instructions used */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	62 int b_iused;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	63 /* length of instruction array (b_instr) */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	64 int b_ialloc;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	65 /* pointer to an array of instructions, initially NULL */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	66 struct instr *b_instr;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	67 /* If b_next is non-NULL, it is a pointer to the next
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	68 block reached by normal control flow. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	69 struct basicblock_ *b_next;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	70 /* b_seen is used to perform a DFS of basicblocks. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	71 int b_seen : 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	72 /* b_return is true if a RETURN_VALUE opcode is inserted. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	73 int b_return : 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	74 /* depth of stack upon entry of block, computed by stackdepth() */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	75 int b_startdepth;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	76 /* instruction offset for block, computed by assemble_jump_offsets() */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	77 int b_offset;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	78 } basicblock;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	79
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	80 /* fblockinfo tracks the current frame block.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	81
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	82 A frame block is used to handle loops, try/except, and try/finally.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	83 It's called a frame block to distinguish it from a basic block in the
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	84 compiler IR.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	85 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	86
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	87 enum fblocktype { LOOP, EXCEPT, FINALLY_TRY, FINALLY_END };
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	88
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	89 struct fblockinfo {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	90 enum fblocktype fb_type;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	91 basicblock *fb_block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	92 };
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	93
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	94 /* The following items change on entry and exit of code blocks.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	95 They must be saved and restored when returning to a block.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	96 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	97 struct compiler_unit {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	98 PySTEntryObject *u_ste;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	99
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	100 PyObject *u_name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	101 /* The following fields are dicts that map objects to
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	102 the index of them in co_XXX. The index is used as
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	103 the argument for opcodes that refer to those collections.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	104 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	105 PyObject u_consts; / all constants */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	106 PyObject u_names; / all names */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	107 PyObject u_varnames; / local variables */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	108 PyObject u_cellvars; / cell variables */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	109 PyObject u_freevars; / free variables */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	110
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	111 PyObject u_private; / for private name mangling */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	112
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	113 int u_argcount; /* number of arguments for block */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	114 basicblock u_blocks; / pointer to list of blocks */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	115 basicblock u_curblock; / pointer to current block */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	116 int u_tmpname; /* temporary variables for list comps */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	117
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	118 int u_nfblocks;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	119 struct fblockinfo u_fblock[CO_MAXBLOCKS];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	120
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	121 int u_firstlineno; /* the first lineno of the block */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	122 int u_lineno; /* the lineno for the current stmt */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	123 bool u_lineno_set; /* boolean to indicate whether instr
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	124 has been generated with current lineno */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	125 };
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	126
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	127 /* This struct captures the global state of a compilation.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	128
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	129 The u pointer points to the current compilation unit, while units
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	130 for enclosing blocks are stored in c_stack. The u and c_stack are
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	131 managed by compiler_enter_scope() and compiler_exit_scope().
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	132 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	133
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	134 struct compiler {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	135 const char *c_filename;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	136 struct symtable *c_st;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	137 PyFutureFeatures c_future; / pointer to module's __future__ */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	138 PyCompilerFlags *c_flags;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	139
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	140 int c_interactive;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	141 int c_nestlevel;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	142
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	143 struct compiler_unit u; / compiler state for current block */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	144 PyObject c_stack; / Python list holding compiler_unit ptrs */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	145 char c_encoding; / source encoding (a borrowed reference) */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	146 };
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	147
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	148 struct assembler {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	149 PyObject a_bytecode; / string containing bytecode */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	150 int a_offset; /* offset into bytecode */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	151 int a_nblocks; /* number of reachable blocks */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	152 basicblock *a_postorder; / list of blocks in dfs postorder */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	153 PyObject a_lnotab; / string containing lnotab */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	154 int a_lnotab_off; /* offset into lnotab */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	155 int a_lineno; /* last lineno of emitted instruction */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	156 int a_lineno_off; /* bytecode offset of last lineno */
86 a6934380c6e7 "Compiling" version Guido van Rossum <guido@python.org> parents: 73 diff changeset	157 };
a6934380c6e7 "Compiling" version Guido van Rossum <guido@python.org> parents: 73 diff changeset	158
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	159 static int compiler_enter_scope(struct compiler , identifier, void , int);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	160 static void compiler_free(struct compiler *);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	161 static basicblock compiler_new_block(struct compiler );
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	162 static int compiler_next_instr(struct compiler , basicblock );
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	163 static int compiler_addop(struct compiler *, int);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	164 static int compiler_addop_o(struct compiler , int, PyObject , PyObject *);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	165 static int compiler_addop_i(struct compiler *, int, int);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	166 static int compiler_addop_j(struct compiler , int, basicblock , int);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	167 static void compiler_use_block(struct compiler , basicblock );
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	168 static basicblock compiler_use_new_block(struct compiler );
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	169 static int compiler_error(struct compiler , const char );
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	170 static int compiler_nameop(struct compiler *, identifier, expr_context_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	171
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	172 static PyCodeObject compiler_mod(struct compiler , mod_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	173 static int compiler_visit_stmt(struct compiler *, stmt_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	174 static int compiler_visit_keyword(struct compiler *, keyword_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	175 static int compiler_visit_expr(struct compiler *, expr_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	176 static int compiler_augassign(struct compiler *, stmt_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	177 static int compiler_visit_slice(struct compiler *, slice_ty,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	178 expr_context_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	179
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	180 static int compiler_push_fblock(struct compiler *, enum fblocktype,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	181 basicblock *);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	182 static void compiler_pop_fblock(struct compiler *, enum fblocktype,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	183 basicblock *);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	184
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	185 static int inplace_binop(struct compiler *, operator_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	186 static int expr_constant(expr_ty e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	187
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	188 static PyCodeObject assemble(struct compiler , int addNone);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	189 static PyObject *__doc__;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	190
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	191 PyObject *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	192 _Py_Mangle(PyObject private, PyObject ident)
33100 356887410bde Fix bug Michael W. Hudson <mwh@python.net> parents: 32977 diff changeset	193 {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	194 /* Name mangling: __private becomes _classname__private.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	195 This is independent from how the name is used. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	196 const char p, name = PyString_AsString(ident);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	197 char *buffer;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	198 size_t nlen, plen;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	199 if (private == NULL \|\| name == NULL \|\| name[0] != '_' \|\| name[1] != '_') {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	200 Py_INCREF(ident);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	201 return ident;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	202 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	203 p = PyString_AsString(private);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	204 nlen = strlen(name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	205 if (name[nlen-1] == '_' && name[nlen-2] == '_') {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	206 Py_INCREF(ident);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	207 return ident; /* Don't mangle __whatever__ */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	208 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	209 /* Strip leading underscores from class name */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	210 while (*p == '_')
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	211 p++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	212 if (*p == '\0') {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	213 Py_INCREF(ident);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	214 return ident; /* Don't mangle if class is just underscores */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	215 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	216 plen = strlen(p);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	217 ident = PyString_FromStringAndSize(NULL, 1 + nlen + plen);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	218 if (!ident)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	219 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	220 /* ident = "_" + p[:plen] + name # i.e. 1+plen+nlen bytes */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	221 buffer = PyString_AS_STRING(ident);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	222 buffer[0] = '_';
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	223 strncpy(buffer+1, p, plen);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	224 strcpy(buffer+1+plen, name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	225 return ident;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	226 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	227
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	228 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	229 compiler_init(struct compiler *c)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	230 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	231 memset(c, 0, sizeof(struct compiler));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	232
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	233 c->c_stack = PyList_New(0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	234 if (!c->c_stack)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	235 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	236
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	237 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	238 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	239
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	240 PyCodeObject *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	241 PyAST_Compile(mod_ty mod, const char filename, PyCompilerFlags flags)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	242 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	243 struct compiler c;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	244 PyCodeObject *co = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	245 PyCompilerFlags local_flags;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	246 int merged;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	247
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	248 if (!__doc__) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	249 __doc__ = PyString_InternFromString("__doc__");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	250 if (!__doc__)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	251 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	252 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	253
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	254 if (!compiler_init(&c))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	255 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	256 c.c_filename = filename;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	257 c.c_future = PyFuture_FromAST(mod, filename);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	258 if (c.c_future == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	259 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	260 if (!flags) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	261 local_flags.cf_flags = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	262 flags = &local_flags;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	263 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	264 merged = c.c_future->ff_features \| flags->cf_flags;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	265 c.c_future->ff_features = merged;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	266 flags->cf_flags = merged;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	267 c.c_flags = flags;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	268 c.c_nestlevel = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	269
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	270 c.c_st = PySymtable_Build(mod, filename, c.c_future);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	271 if (c.c_st == NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	272 if (!PyErr_Occurred())
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	273 PyErr_SetString(PyExc_SystemError, "no symtable");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	274 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	275 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	276
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	277 /* XXX initialize to NULL for now, need to handle */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	278 c.c_encoding = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	279
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	280 co = compiler_mod(&c, mod);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	281
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	282 error:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	283 compiler_free(&c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	284 return co;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	285 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	286
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	287 PyCodeObject *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	288 PyNode_Compile(struct _node n, const char filename)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	289 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	290 PyCodeObject *co;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	291 mod_ty mod = PyAST_FromNode(n, NULL, filename);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	292 if (!mod)
33100 356887410bde Fix bug Michael W. Hudson <mwh@python.net> parents: 32977 diff changeset	293 return NULL;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	294 co = PyAST_Compile(mod, filename, NULL);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	295 free_mod(mod);
30428 c2c10f1eb8e2 Fix leak discovered in test_new by Michael Hudson. Raymond Hettinger <python@rcn.com> parents: 30226 diff changeset	296 return co;
23868 8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 23589 diff changeset	297 }
8e6760bf1884 SF patch 568629 by Oren Tirosh: types made callable. Guido van Rossum <guido@python.org> parents: 23589 diff changeset	298
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	299 static void
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	300 compiler_free(struct compiler *c)
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	301 {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	302 if (c->c_st)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	303 PySymtable_Free(c->c_st);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	304 if (c->c_future)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	305 PyObject_Free((void *)c->c_future);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	306 Py_DECREF(c->c_stack);
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	307 }
cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	308
5373 5880384d7c71 Quickly renamed the remaining files -- this directory is done. Guido van Rossum <guido@python.org> parents: 5287 diff changeset	309 static PyObject *
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	310 list2dict(PyObject *list)
1399 cc172ce05561 Added compare operations for functions and code objects. Guido van Rossum <guido@python.org> parents: 1369 diff changeset	311 {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	312 int i, n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	313 PyObject v, k, *dict = PyDict_New();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	314
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	315 n = PyList_Size(list);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	316 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	317 v = PyInt_FromLong(i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	318 if (!v) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	319 Py_DECREF(dict);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	320 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	321 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	322 k = PyList_GET_ITEM(list, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	323 k = Py_BuildValue("(OO)", k, k->ob_type);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	324 if (k == NULL \|\| PyDict_SetItem(dict, k, v) < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	325 Py_XDECREF(k);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	326 Py_DECREF(v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	327 Py_DECREF(dict);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	328 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	329 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	330 Py_DECREF(v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	331 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	332 return dict;
1399 cc172ce05561 Added compare operations for functions and code objects. Guido van Rossum <guido@python.org> parents: 1369 diff changeset	333 }
cc172ce05561 Added compare operations for functions and code objects. Guido van Rossum <guido@python.org> parents: 1369 diff changeset	334
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	335 /* Return new dict containing names from src that match scope(s).
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	336
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	337 src is a symbol table dictionary. If the scope of a name matches
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	338 either scope_type or flag is set, insert it into the new dict. The
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	339 values are integers, starting at offset and increasing by one for
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	340 each key.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	341 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	342
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	343 static PyObject *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	344 dictbytype(PyObject *src, int scope_type, int flag, int offset)
16006 51811d78a9da SF Patch #103250, by pj99: Optimize a strspn() out of startup. Guido van Rossum <guido@python.org> parents: 15438 diff changeset	345 {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	346 int pos = 0, i = offset, scope;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	347 PyObject k, v, *dest = PyDict_New();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	348
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	349 assert(offset >= 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	350 if (dest == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	351 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	352
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	353 while (PyDict_Next(src, &pos, &k, &v)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	354 /* XXX this should probably be a macro in symtable.h */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	355 assert(PyInt_Check(v));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	356 scope = (PyInt_AS_LONG(v) >> SCOPE_OFF) & SCOPE_MASK;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	357
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	358 if (scope == scope_type \|\| PyInt_AS_LONG(v) & flag) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	359 PyObject tuple, item = PyInt_FromLong(i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	360 if (item == NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	361 Py_DECREF(dest);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	362 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	363 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	364 i++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	365 tuple = Py_BuildValue("(OO)", k, k->ob_type);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	366 if (!tuple \|\| PyDict_SetItem(dest, tuple, item) < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	367 Py_DECREF(item);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	368 Py_DECREF(dest);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	369 Py_XDECREF(tuple);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	370 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	371 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	372 Py_DECREF(item);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	373 Py_DECREF(tuple);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	374 }
16523 9d625303f914 Reindent a function that was somehow indented by 7 spaces. Also did a Guido van Rossum <guido@python.org> parents: 16428 diff changeset	375 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	376 return dest;
16257 fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	377 }
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	378
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	379 /* Begin: Peephole optimizations ----------------------------------------- */
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	380
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	381 #define GETARG(arr, i) ((int)((arr[i+2]<<8) + arr[i+1]))
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	382 #define UNCONDITIONAL_JUMP(op) (op==JUMP_ABSOLUTE \|\| op==JUMP_FORWARD)
28417 1a2fd109f6b6 Factored out test for absolute jumps. Raymond Hettinger <python@rcn.com> parents: 28406 diff changeset	383 #define ABSOLUTE_JUMP(op) (op==JUMP_ABSOLUTE \|\| op==CONTINUE_LOOP)
1a2fd109f6b6 Factored out test for absolute jumps. Raymond Hettinger <python@rcn.com> parents: 28406 diff changeset	384 #define GETJUMPTGT(arr, i) (GETARG(arr,i) + (ABSOLUTE_JUMP(arr[i]) ? 0 : i+3))
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	385 #define SETARG(arr, i, val) arr[i+2] = val>>8; arr[i+1] = val & 255
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	386 #define CODESIZE(op) (HAS_ARG(op) ? 3 : 1)
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	387 #define ISBASICBLOCK(blocks, start, bytes) (blocks[start]==blocks[start+bytes-1])
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	388
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	389 /* Replace LOAD_CONST c1. LOAD_CONST c2 ... LOAD_CONST cn BUILD_TUPLE n
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	390 with LOAD_CONST (c1, c2, ... cn).
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	391 The consts table must still be in list form so that the
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	392 new constant (c1, c2, ... cn) can be appended.
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	393 Called with codestr pointing to the first LOAD_CONST.
34553 cd04f2d18a6f Adopt Skip's idea to optimize lists of constants in the context Raymond Hettinger <python@rcn.com> parents: 34547 diff changeset	394 Bails out with no change if one or more of the LOAD_CONSTs is missing.
cd04f2d18a6f Adopt Skip's idea to optimize lists of constants in the context Raymond Hettinger <python@rcn.com> parents: 34547 diff changeset	395 Also works for BUILD_LIST when followed by an "in" or "not in" test.
cd04f2d18a6f Adopt Skip's idea to optimize lists of constants in the context Raymond Hettinger <python@rcn.com> parents: 34547 diff changeset	396 */
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	397 static int
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	398 tuple_of_constants(unsigned char codestr, int n, PyObject consts)
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	399 {
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	400 PyObject newconst, constant;
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	401 int i, arg, len_consts;
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	402
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	403 /* Pre-conditions */
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	404 assert(PyList_CheckExact(consts));
34553 cd04f2d18a6f Adopt Skip's idea to optimize lists of constants in the context Raymond Hettinger <python@rcn.com> parents: 34547 diff changeset	405 assert(codestr[n3] == BUILD_TUPLE \|\| codestr[n3] == BUILD_LIST);
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	406 assert(GETARG(codestr, (n*3)) == n);
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	407 for (i=0 ; i<n ; i++)
33860 3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	408 assert(codestr[i*3] == LOAD_CONST);
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	409
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	410 /* Buildup new tuple of constants */
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	411 newconst = PyTuple_New(n);
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	412 if (newconst == NULL)
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	413 return 0;
33838 fdce3d39bec1 SF bug #1053819: Segfault in tuple_of_constants Raymond Hettinger <python@rcn.com> parents: 33822 diff changeset	414 len_consts = PyList_GET_SIZE(consts);
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	415 for (i=0 ; i<n ; i++) {
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	416 arg = GETARG(codestr, (i*3));
33838 fdce3d39bec1 SF bug #1053819: Segfault in tuple_of_constants Raymond Hettinger <python@rcn.com> parents: 33822 diff changeset	417 assert(arg < len_consts);
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	418 constant = PyList_GET_ITEM(consts, arg);
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	419 Py_INCREF(constant);
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	420 PyTuple_SET_ITEM(newconst, i, constant);
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	421 }
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	422
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	423 /* Append folded constant onto consts */
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	424 if (PyList_Append(consts, newconst)) {
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	425 Py_DECREF(newconst);
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	426 return 0;
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	427 }
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	428 Py_DECREF(newconst);
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	429
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	430 /* Write NOPs over old LOAD_CONSTS and
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	431 add a new LOAD_CONST newconst on top of the BUILD_TUPLE n */
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	432 memset(codestr, NOP, n*3);
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	433 codestr[n*3] = LOAD_CONST;
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	434 SETARG(codestr, (n*3), len_consts);
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	435 return 1;
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	436 }
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	437
34305 0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	438 /* Replace LOAD_CONST c1. LOAD_CONST c2 BINOP
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	439 with LOAD_CONST binop(c1,c2)
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	440 The consts table must still be in list form so that the
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	441 new constant can be appended.
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	442 Called with codestr pointing to the first LOAD_CONST.
34506 bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	443 Abandons the transformation if the folding fails (i.e. 1+'a').
bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	444 If the new constant is a sequence, only folds when the size
bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	445 is below a threshold value. That keeps pyc files from
bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	446 becoming large in the presence of code like: (None,)*1000.
bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	447 */
34305 0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	448 static int
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	449 fold_binops_on_constants(unsigned char codestr, PyObject consts)
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	450 {
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	451 PyObject newconst, v, *w;
34506 bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	452 int len_consts, opcode, size;
34305 0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	453
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	454 /* Pre-conditions */
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	455 assert(PyList_CheckExact(consts));
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	456 assert(codestr[0] == LOAD_CONST);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	457 assert(codestr[3] == LOAD_CONST);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	458
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	459 /* Create new constant */
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	460 v = PyList_GET_ITEM(consts, GETARG(codestr, 0));
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	461 w = PyList_GET_ITEM(consts, GETARG(codestr, 3));
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	462 opcode = codestr[6];
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	463 switch (opcode) {
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	464 case BINARY_POWER:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	465 newconst = PyNumber_Power(v, w, Py_None);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	466 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	467 case BINARY_MULTIPLY:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	468 newconst = PyNumber_Multiply(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	469 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	470 case BINARY_DIVIDE:
34506 bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	471 /* Cannot fold this operation statically since
bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	472 the result can depend on the run-time presence of the -Qnew flag */
34359 d81b6173f050 Re-running python with/without the -Qnew flag uses incorrectly optimized Armin Rigo <arigo@tunes.org> parents: 34305 diff changeset	473 return 0;
34305 0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	474 case BINARY_TRUE_DIVIDE:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	475 newconst = PyNumber_TrueDivide(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	476 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	477 case BINARY_FLOOR_DIVIDE:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	478 newconst = PyNumber_FloorDivide(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	479 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	480 case BINARY_MODULO:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	481 newconst = PyNumber_Remainder(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	482 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	483 case BINARY_ADD:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	484 newconst = PyNumber_Add(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	485 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	486 case BINARY_SUBTRACT:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	487 newconst = PyNumber_Subtract(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	488 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	489 case BINARY_SUBSCR:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	490 newconst = PyObject_GetItem(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	491 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	492 case BINARY_LSHIFT:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	493 newconst = PyNumber_Lshift(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	494 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	495 case BINARY_RSHIFT:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	496 newconst = PyNumber_Rshift(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	497 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	498 case BINARY_AND:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	499 newconst = PyNumber_And(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	500 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	501 case BINARY_XOR:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	502 newconst = PyNumber_Xor(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	503 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	504 case BINARY_OR:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	505 newconst = PyNumber_Or(v, w);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	506 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	507 default:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	508 /* Called with an unknown opcode */
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	509 assert(0);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	510 return 0;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	511 }
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	512 if (newconst == NULL) {
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	513 PyErr_Clear();
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	514 return 0;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	515 }
34506 bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	516 size = PyObject_Size(newconst);
bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	517 if (size == -1)
bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	518 PyErr_Clear();
bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	519 else if (size > 20) {
bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	520 Py_DECREF(newconst);
bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	521 return 0;
bda933873758 Do not fold a constant if a large sequence will result. Raymond Hettinger <python@rcn.com> parents: 34359 diff changeset	522 }
34305 0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	523
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	524 /* Append folded constant into consts table */
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	525 len_consts = PyList_GET_SIZE(consts);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	526 if (PyList_Append(consts, newconst)) {
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	527 Py_DECREF(newconst);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	528 return 0;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	529 }
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	530 Py_DECREF(newconst);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	531
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	532 /* Write NOP NOP NOP NOP LOAD_CONST newconst */
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	533 memset(codestr, NOP, 4);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	534 codestr[4] = LOAD_CONST;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	535 SETARG(codestr, 4, len_consts);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	536 return 1;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	537 }
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	538
34622 516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	539 static int
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	540 fold_unaryops_on_constants(unsigned char codestr, PyObject consts)
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	541 {
34630 660419bdb4ae Preserve sign of -0.0 when result is run through marshal. Raymond Hettinger <python@rcn.com> parents: 34626 diff changeset	542 PyObject newconst=NULL, v;
34622 516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	543 int len_consts, opcode;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	544
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	545 /* Pre-conditions */
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	546 assert(PyList_CheckExact(consts));
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	547 assert(codestr[0] == LOAD_CONST);
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	548
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	549 /* Create new constant */
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	550 v = PyList_GET_ITEM(consts, GETARG(codestr, 0));
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	551 opcode = codestr[3];
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	552 switch (opcode) {
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	553 case UNARY_NEGATIVE:
34630 660419bdb4ae Preserve sign of -0.0 when result is run through marshal. Raymond Hettinger <python@rcn.com> parents: 34626 diff changeset	554 /* Preserve the sign of -0.0 */
660419bdb4ae Preserve sign of -0.0 when result is run through marshal. Raymond Hettinger <python@rcn.com> parents: 34626 diff changeset	555 if (PyObject_IsTrue(v) == 1)
660419bdb4ae Preserve sign of -0.0 when result is run through marshal. Raymond Hettinger <python@rcn.com> parents: 34626 diff changeset	556 newconst = PyNumber_Negative(v);
34622 516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	557 break;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	558 case UNARY_CONVERT:
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	559 newconst = PyObject_Repr(v);
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	560 break;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	561 case UNARY_INVERT:
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	562 newconst = PyNumber_Invert(v);
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	563 break;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	564 default:
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	565 /* Called with an unknown opcode */
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	566 assert(0);
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	567 return 0;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	568 }
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	569 if (newconst == NULL) {
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	570 PyErr_Clear();
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	571 return 0;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	572 }
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	573
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	574 /* Append folded constant into consts table */
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	575 len_consts = PyList_GET_SIZE(consts);
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	576 if (PyList_Append(consts, newconst)) {
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	577 Py_DECREF(newconst);
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	578 return 0;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	579 }
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	580 Py_DECREF(newconst);
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	581
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	582 /* Write NOP LOAD_CONST newconst */
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	583 codestr[0] = NOP;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	584 codestr[1] = LOAD_CONST;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	585 SETARG(codestr, 1, len_consts);
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	586 return 1;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	587 }
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	588
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	589 static unsigned int *
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	590 markblocks(unsigned char *code, int len)
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	591 {
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	592 unsigned int blocks = PyMem_Malloc(lensizeof(int));
33860 3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	593 int i,j, opcode, blockcnt = 0;
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	594
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	595 if (blocks == NULL)
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	596 return NULL;
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	597 memset(blocks, 0, len*sizeof(int));
33860 3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	598
3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	599 /* Mark labels in the first pass */
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	600 for (i=0 ; i<len ; i+=CODESIZE(opcode)) {
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	601 opcode = code[i];
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	602 switch (opcode) {
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	603 case FOR_ITER:
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	604 case JUMP_FORWARD:
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	605 case JUMP_IF_FALSE:
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	606 case JUMP_IF_TRUE:
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	607 case JUMP_ABSOLUTE:
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	608 case CONTINUE_LOOP:
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	609 case SETUP_LOOP:
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	610 case SETUP_EXCEPT:
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	611 case SETUP_FINALLY:
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	612 j = GETJUMPTGT(code, i);
33860 3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	613 blocks[j] = 1;
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	614 break;
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	615 }
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	616 }
33860 3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	617 /* Build block numbers in the second pass */
3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	618 for (i=0 ; i<len ; i++) {
3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	619 blockcnt += blocks[i]; /* increment blockcnt over labels */
3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	620 blocks[i] = blockcnt;
3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	621 }
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	622 return blocks;
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	623 }
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	624
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	625 /* Perform basic peephole optimizations to components of a code object.
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	626 The consts object should still be in list form to allow new constants
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	627 to be appended.
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	628
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	629 To keep the optimizer simple, it bails out (does nothing) for code
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	630 containing extended arguments or that has a length over 32,700. That
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	631 allows us to avoid overflow and sign issues. Likewise, it bails when
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	632 the lineno table has complex encoding for gaps >= 255.
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	633
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	634 Optimizations are restricted to simple transformations occuring within a
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	635 single basic block. All transformations keep the code size the same or
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	636 smaller. For those that reduce size, the gaps are initially filled with
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	637 NOPs. Later those NOPs are removed and the jump addresses retargeted in
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	638 a single pass. Line numbering is adjusted accordingly. */
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	639
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	640 static PyObject *
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	641 optimize_code(PyObject code, PyObject consts, PyObject names, PyObject lineno_obj)
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	642 {
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	643 int i, j, codelen, nops, h, adj;
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	644 int tgt, tgttgt, opcode;
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	645 unsigned char *codestr = NULL;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	646 unsigned char *lineno;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	647 int *addrmap = NULL;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	648 int new_line, cum_orig_line, last_line, tabsiz;
33838 fdce3d39bec1 SF bug #1053819: Segfault in tuple_of_constants Raymond Hettinger <python@rcn.com> parents: 33822 diff changeset	649 int cumlc=0, lastlc=0; /* Count runs of consecutive LOAD_CONST codes */
33860 3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	650 unsigned int *blocks = NULL;
32711 c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	651 char *name;
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	652
33860 3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	653 /* Bail out if an exception is set */
3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	654 if (PyErr_Occurred())
3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	655 goto exitUnchanged;
3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	656
33272 bac997b79b19 Bypass peepholing of code with lineno tables having intervals >= 255. Raymond Hettinger <python@rcn.com> parents: 33271 diff changeset	657 /* Bypass optimization when the lineno table is too complex */
bac997b79b19 Bypass peepholing of code with lineno tables having intervals >= 255. Raymond Hettinger <python@rcn.com> parents: 33271 diff changeset	658 assert(PyString_Check(lineno_obj));
35126 70681267a74a Fix signedness of various char variables to stop causing a warning under gcc 4. Brett Cannon <bcannon@gmail.com> parents: 34696 diff changeset	659 lineno = (unsigned char*)PyString_AS_STRING(lineno_obj);
33272 bac997b79b19 Bypass peepholing of code with lineno tables having intervals >= 255. Raymond Hettinger <python@rcn.com> parents: 33271 diff changeset	660 tabsiz = PyString_GET_SIZE(lineno_obj);
bac997b79b19 Bypass peepholing of code with lineno tables having intervals >= 255. Raymond Hettinger <python@rcn.com> parents: 33271 diff changeset	661 if (memchr(lineno, 255, tabsiz) != NULL)
bac997b79b19 Bypass peepholing of code with lineno tables having intervals >= 255. Raymond Hettinger <python@rcn.com> parents: 33271 diff changeset	662 goto exitUnchanged;
bac997b79b19 Bypass peepholing of code with lineno tables having intervals >= 255. Raymond Hettinger <python@rcn.com> parents: 33271 diff changeset	663
33249 c654334dc961 Incorporate review comments courtesy of Neal Norwitz: Raymond Hettinger <python@rcn.com> parents: 33248 diff changeset	664 /* Avoid situations where jump retargeting could overflow */
33620 27aa0e119330 Replaced a test with an assertion. Raymond Hettinger <python@rcn.com> parents: 33539 diff changeset	665 assert(PyString_Check(code));
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	666 codelen = PyString_Size(code);
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	667 if (codelen > 32700)
33249 c654334dc961 Incorporate review comments courtesy of Neal Norwitz: Raymond Hettinger <python@rcn.com> parents: 33248 diff changeset	668 goto exitUnchanged;
c654334dc961 Incorporate review comments courtesy of Neal Norwitz: Raymond Hettinger <python@rcn.com> parents: 33248 diff changeset	669
c654334dc961 Incorporate review comments courtesy of Neal Norwitz: Raymond Hettinger <python@rcn.com> parents: 33248 diff changeset	670 /* Make a modifiable copy of the code string */
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	671 codestr = PyMem_Malloc(codelen);
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	672 if (codestr == NULL)
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	673 goto exitUnchanged;
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	674 codestr = memcpy(codestr, PyString_AS_STRING(code), codelen);
32977 40c3a51cb71c SF bug #1004088: big code objects (>64K) may be optimized incorrectly Raymond Hettinger <python@rcn.com> parents: 32956 diff changeset	675
34626 fcacf9d4b8f0 Document how the pattern recognizer keeps all of its references in bounds. Raymond Hettinger <python@rcn.com> parents: 34622 diff changeset	676 /* Verify that RETURN_VALUE terminates the codestring. This allows
fcacf9d4b8f0 Document how the pattern recognizer keeps all of its references in bounds. Raymond Hettinger <python@rcn.com> parents: 34622 diff changeset	677 the various transformation patterns to look ahead several
fcacf9d4b8f0 Document how the pattern recognizer keeps all of its references in bounds. Raymond Hettinger <python@rcn.com> parents: 34622 diff changeset	678 instructions without additional checks to make sure they are not
fcacf9d4b8f0 Document how the pattern recognizer keeps all of its references in bounds. Raymond Hettinger <python@rcn.com> parents: 34622 diff changeset	679 looking beyond the end of the code string.
fcacf9d4b8f0 Document how the pattern recognizer keeps all of its references in bounds. Raymond Hettinger <python@rcn.com> parents: 34622 diff changeset	680 */
fcacf9d4b8f0 Document how the pattern recognizer keeps all of its references in bounds. Raymond Hettinger <python@rcn.com> parents: 34622 diff changeset	681 if (codestr[codelen-1] != RETURN_VALUE)
fcacf9d4b8f0 Document how the pattern recognizer keeps all of its references in bounds. Raymond Hettinger <python@rcn.com> parents: 34622 diff changeset	682 goto exitUnchanged;
fcacf9d4b8f0 Document how the pattern recognizer keeps all of its references in bounds. Raymond Hettinger <python@rcn.com> parents: 34622 diff changeset	683
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	684 /* Mapping to new jump targets after NOPs are removed */
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	685 addrmap = PyMem_Malloc(codelen * sizeof(int));
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	686 if (addrmap == NULL)
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	687 goto exitUnchanged;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	688
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	689 blocks = markblocks(codestr, codelen);
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	690 if (blocks == NULL)
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	691 goto exitUnchanged;
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	692 assert(PyList_Check(consts));
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	693
33875 24fc3eaa19e0 Simplify and future proof NOP counting in the peepholer. Raymond Hettinger <python@rcn.com> parents: 33861 diff changeset	694 for (i=0 ; i<codelen ; i += CODESIZE(codestr[i])) {
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	695 opcode = codestr[i];
33838 fdce3d39bec1 SF bug #1053819: Segfault in tuple_of_constants Raymond Hettinger <python@rcn.com> parents: 33822 diff changeset	696
fdce3d39bec1 SF bug #1053819: Segfault in tuple_of_constants Raymond Hettinger <python@rcn.com> parents: 33822 diff changeset	697 lastlc = cumlc;
fdce3d39bec1 SF bug #1053819: Segfault in tuple_of_constants Raymond Hettinger <python@rcn.com> parents: 33822 diff changeset	698 cumlc = 0;
fdce3d39bec1 SF bug #1053819: Segfault in tuple_of_constants Raymond Hettinger <python@rcn.com> parents: 33822 diff changeset	699
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	700 switch (opcode) {
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	701
32402 1c2baae14828 Move NOP to end of code transformation. Raymond Hettinger <python@rcn.com> parents: 32395 diff changeset	702 /* Replace UNARY_NOT JUMP_IF_FALSE POP_TOP with
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	703 with JUMP_IF_TRUE POP_TOP */
32395 6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	704 case UNARY_NOT:
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	705 if (codestr[i+1] != JUMP_IF_FALSE \|\|
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	706 codestr[i+4] != POP_TOP \|\|
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	707 !ISBASICBLOCK(blocks,i,5))
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	708 continue;
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	709 tgt = GETJUMPTGT(codestr, (i+1));
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	710 if (codestr[tgt] != POP_TOP)
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	711 continue;
32402 1c2baae14828 Move NOP to end of code transformation. Raymond Hettinger <python@rcn.com> parents: 32395 diff changeset	712 j = GETARG(codestr, i+1) + 1;
1c2baae14828 Move NOP to end of code transformation. Raymond Hettinger <python@rcn.com> parents: 32395 diff changeset	713 codestr[i] = JUMP_IF_TRUE;
1c2baae14828 Move NOP to end of code transformation. Raymond Hettinger <python@rcn.com> parents: 32395 diff changeset	714 SETARG(codestr, i, j);
1c2baae14828 Move NOP to end of code transformation. Raymond Hettinger <python@rcn.com> parents: 32395 diff changeset	715 codestr[i+3] = POP_TOP;
1c2baae14828 Move NOP to end of code transformation. Raymond Hettinger <python@rcn.com> parents: 32395 diff changeset	716 codestr[i+4] = NOP;
32395 6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	717 break;
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	718
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	719 /* not a is b --> a is not b
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	720 not a in b --> a not in b
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	721 not a is not b --> a is b
34574 369e8e71ea33 Remove the set conversion which didn't work with: [] in (0,) Raymond Hettinger <python@rcn.com> parents: 34571 diff changeset	722 not a not in b --> a in b
34547 835b645a168f Transform "x in (1,2,3)" to "x in frozenset([1,2,3])". Raymond Hettinger <python@rcn.com> parents: 34506 diff changeset	723 */
32395 6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	724 case COMPARE_OP:
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	725 j = GETARG(codestr, i);
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	726 if (j < 6 \|\| j > 9 \|\|
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	727 codestr[i+3] != UNARY_NOT \|\|
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	728 !ISBASICBLOCK(blocks,i,4))
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	729 continue;
32395 6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	730 SETARG(codestr, i, (j^1));
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	731 codestr[i+3] = NOP;
32717 0e890ac1c0f2 optimize_code(): Repaired gross error in new special-casing for None. Tim Peters <tim.peters@gmail.com> parents: 32711 diff changeset	732 break;
0e890ac1c0f2 optimize_code(): Repaired gross error in new special-casing for None. Tim Peters <tim.peters@gmail.com> parents: 32711 diff changeset	733
32711 c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	734 /* Replace LOAD_GLOBAL/LOAD_NAME None with LOAD_CONST None */
c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	735 case LOAD_NAME:
c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	736 case LOAD_GLOBAL:
c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	737 j = GETARG(codestr, i);
c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	738 name = PyString_AsString(PyTuple_GET_ITEM(names, j));
c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	739 if (name == NULL \|\| strcmp(name, "None") != 0)
c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	740 continue;
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	741 for (j=0 ; j < PyList_GET_SIZE(consts) ; j++) {
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	742 if (PyList_GET_ITEM(consts, j) == Py_None) {
32711 c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	743 codestr[i] = LOAD_CONST;
c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	744 SETARG(codestr, i, j);
33880 8a09c82e4261 Maintain peepholer's cumlc invariant by updating the running total Raymond Hettinger <python@rcn.com> parents: 33875 diff changeset	745 cumlc = lastlc + 1;
32711 c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	746 break;
c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	747 }
c7c9b68ddda2 Treat None as a constant. Raymond Hettinger <python@rcn.com> parents: 32531 diff changeset	748 }
32395 6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	749 break;
6bc6abba8659 Install two code generation optimizations that depend on NOP. Raymond Hettinger <python@rcn.com> parents: 32305 diff changeset	750
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	751 /* Skip over LOAD_CONST trueconst JUMP_IF_FALSE xx POP_TOP */
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	752 case LOAD_CONST:
33838 fdce3d39bec1 SF bug #1053819: Segfault in tuple_of_constants Raymond Hettinger <python@rcn.com> parents: 33822 diff changeset	753 cumlc = lastlc + 1;
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	754 j = GETARG(codestr, i);
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	755 if (codestr[i+3] != JUMP_IF_FALSE \|\|
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	756 codestr[i+6] != POP_TOP \|\|
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	757 !ISBASICBLOCK(blocks,i,7) \|\|
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	758 !PyObject_IsTrue(PyList_GET_ITEM(consts, j)))
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	759 continue;
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	760 memset(codestr+i, NOP, 7);
33880 8a09c82e4261 Maintain peepholer's cumlc invariant by updating the running total Raymond Hettinger <python@rcn.com> parents: 33875 diff changeset	761 cumlc = 0;
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	762 break;
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	763
34553 cd04f2d18a6f Adopt Skip's idea to optimize lists of constants in the context Raymond Hettinger <python@rcn.com> parents: 34547 diff changeset	764 /* Try to fold tuples of constants (includes a case for lists
cd04f2d18a6f Adopt Skip's idea to optimize lists of constants in the context Raymond Hettinger <python@rcn.com> parents: 34547 diff changeset	765 which are only used for "in" and "not in" tests).
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	766 Skip over BUILD_SEQN 1 UNPACK_SEQN 1.
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	767 Replace BUILD_SEQN 2 UNPACK_SEQN 2 with ROT2.
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	768 Replace BUILD_SEQN 3 UNPACK_SEQN 3 with ROT3 ROT2. */
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	769 case BUILD_TUPLE:
34553 cd04f2d18a6f Adopt Skip's idea to optimize lists of constants in the context Raymond Hettinger <python@rcn.com> parents: 34547 diff changeset	770 case BUILD_LIST:
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	771 j = GETARG(codestr, i);
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	772 h = i - 3 * j;
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	773 if (h >= 0 &&
33860 3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	774 j <= lastlc &&
34647 a9f161e36bf9 Silence a gcc warning about putting in parentheses around && expressions mixed Brett Cannon <bcannon@gmail.com> parents: 34630 diff changeset	775 ((opcode == BUILD_TUPLE &&
a9f161e36bf9 Silence a gcc warning about putting in parentheses around && expressions mixed Brett Cannon <bcannon@gmail.com> parents: 34630 diff changeset	776 ISBASICBLOCK(blocks, h, 3*(j+1))) \|\|
a9f161e36bf9 Silence a gcc warning about putting in parentheses around && expressions mixed Brett Cannon <bcannon@gmail.com> parents: 34630 diff changeset	777 (opcode == BUILD_LIST &&
34553 cd04f2d18a6f Adopt Skip's idea to optimize lists of constants in the context Raymond Hettinger <python@rcn.com> parents: 34547 diff changeset	778 codestr[i+3]==COMPARE_OP &&
cd04f2d18a6f Adopt Skip's idea to optimize lists of constants in the context Raymond Hettinger <python@rcn.com> parents: 34547 diff changeset	779 ISBASICBLOCK(blocks, h, 3*(j+2)) &&
34647 a9f161e36bf9 Silence a gcc warning about putting in parentheses around && expressions mixed Brett Cannon <bcannon@gmail.com> parents: 34630 diff changeset	780 (GETARG(codestr,i+3)==6 \|\|
a9f161e36bf9 Silence a gcc warning about putting in parentheses around && expressions mixed Brett Cannon <bcannon@gmail.com> parents: 34630 diff changeset	781 GETARG(codestr,i+3)==7))) &&
a9f161e36bf9 Silence a gcc warning about putting in parentheses around && expressions mixed Brett Cannon <bcannon@gmail.com> parents: 34630 diff changeset	782 tuple_of_constants(&codestr[h], j, consts)) {
33880 8a09c82e4261 Maintain peepholer's cumlc invariant by updating the running total Raymond Hettinger <python@rcn.com> parents: 33875 diff changeset	783 assert(codestr[i] == LOAD_CONST);
8a09c82e4261 Maintain peepholer's cumlc invariant by updating the running total Raymond Hettinger <python@rcn.com> parents: 33875 diff changeset	784 cumlc = 1;
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	785 break;
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	786 }
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	787 if (codestr[i+3] != UNPACK_SEQUENCE \|\|
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	788 !ISBASICBLOCK(blocks,i,6) \|\|
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	789 j != GETARG(codestr, i+3))
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	790 continue;
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	791 if (j == 1) {
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	792 memset(codestr+i, NOP, 6);
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	793 } else if (j == 2) {
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	794 codestr[i] = ROT_TWO;
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	795 memset(codestr+i+1, NOP, 5);
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	796 } else if (j == 3) {
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	797 codestr[i] = ROT_THREE;
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	798 codestr[i+1] = ROT_TWO;
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	799 memset(codestr+i+2, NOP, 4);
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	800 }
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	801 break;
6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	802
34305 0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	803 /* Fold binary ops on constants.
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	804 LOAD_CONST c1 LOAD_CONST c2 BINOP --> LOAD_CONST binop(c1,c2) */
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	805 case BINARY_POWER:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	806 case BINARY_MULTIPLY:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	807 case BINARY_TRUE_DIVIDE:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	808 case BINARY_FLOOR_DIVIDE:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	809 case BINARY_MODULO:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	810 case BINARY_ADD:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	811 case BINARY_SUBTRACT:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	812 case BINARY_SUBSCR:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	813 case BINARY_LSHIFT:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	814 case BINARY_RSHIFT:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	815 case BINARY_AND:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	816 case BINARY_XOR:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	817 case BINARY_OR:
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	818 if (lastlc >= 2 &&
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	819 ISBASICBLOCK(blocks, i-6, 7) &&
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	820 fold_binops_on_constants(&codestr[i-6], consts)) {
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	821 i -= 2;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	822 assert(codestr[i] == LOAD_CONST);
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	823 cumlc = 1;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	824 }
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	825 break;
0c326327e722 Teach the peephole optimizer to fold simple constant expressions. Raymond Hettinger <python@rcn.com> parents: 33925 diff changeset	826
34622 516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	827 /* Fold unary ops on constants.
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	828 LOAD_CONST c1 UNARY_OP --> LOAD_CONST unary_op(c) */
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	829 case UNARY_NEGATIVE:
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	830 case UNARY_CONVERT:
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	831 case UNARY_INVERT:
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	832 if (lastlc >= 1 &&
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	833 ISBASICBLOCK(blocks, i-3, 4) &&
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	834 fold_unaryops_on_constants(&codestr[i-3], consts)) {
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	835 i -= 2;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	836 assert(codestr[i] == LOAD_CONST);
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	837 cumlc = 1;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	838 }
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	839 break;
516bb8fd75b4 Teach the peepholer to fold unary operations on constants. Raymond Hettinger <python@rcn.com> parents: 34574 diff changeset	840
33259 b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	841 /* Simplify conditional jump to conditional jump where the
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	842 result of the first test implies the success of a similar
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	843 test or the failure of the opposite test.
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	844 Arises in code like:
33860 3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	845 "if a and b:"
3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	846 "if a or b:"
33259 b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	847 "a and b or c"
33861 4a3eaa1aa3af Fixed a comment and added another one. Armin Rigo <arigo@tunes.org> parents: 33860 diff changeset	848 "(a and b) and c"
33259 b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	849 x:JUMP_IF_FALSE y y:JUMP_IF_FALSE z --> x:JUMP_IF_FALSE z
33271 3dbdbd572d94 Fix typo in comment and add clarification. Raymond Hettinger <python@rcn.com> parents: 33259 diff changeset	850 x:JUMP_IF_FALSE y y:JUMP_IF_TRUE z --> x:JUMP_IF_FALSE y+3
3dbdbd572d94 Fix typo in comment and add clarification. Raymond Hettinger <python@rcn.com> parents: 33259 diff changeset	851 where y+3 is the instruction following the second test.
33259 b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	852 */
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	853 case JUMP_IF_FALSE:
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	854 case JUMP_IF_TRUE:
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	855 tgt = GETJUMPTGT(codestr, i);
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	856 j = codestr[tgt];
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	857 if (j == JUMP_IF_FALSE \|\| j == JUMP_IF_TRUE) {
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	858 if (j == opcode) {
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	859 tgttgt = GETJUMPTGT(codestr, tgt) - i - 3;
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	860 SETARG(codestr, i, tgttgt);
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	861 } else {
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	862 tgt -= i;
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	863 SETARG(codestr, i, tgt);
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	864 }
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	865 break;
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	866 }
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	867 /* Intentional fallthrough */
b63b30821ef4 Simplify chains of conditional jumps. Raymond Hettinger <python@rcn.com> parents: 33249 diff changeset	868
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	869 /* Replace jumps to unconditional jumps */
28610 67d36f4dfea1 Extend SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28417 diff changeset	870 case FOR_ITER:
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	871 case JUMP_FORWARD:
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	872 case JUMP_ABSOLUTE:
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	873 case CONTINUE_LOOP:
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	874 case SETUP_LOOP:
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	875 case SETUP_EXCEPT:
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	876 case SETUP_FINALLY:
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	877 tgt = GETJUMPTGT(codestr, i);
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	878 if (!UNCONDITIONAL_JUMP(codestr[tgt]))
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	879 continue;
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	880 tgttgt = GETJUMPTGT(codestr, tgt);
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	881 if (opcode == JUMP_FORWARD) /* JMP_ABS can go backwards */
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	882 opcode = JUMP_ABSOLUTE;
28417 1a2fd109f6b6 Factored out test for absolute jumps. Raymond Hettinger <python@rcn.com> parents: 28406 diff changeset	883 if (!ABSOLUTE_JUMP(opcode))
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	884 tgttgt -= i + 3; /* Calc relative jump addr */
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	885 if (tgttgt < 0) /* No backward relative jumps */
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	886 continue;
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	887 codestr[i] = opcode;
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	888 SETARG(codestr, i, tgttgt);
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	889 break;
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	890
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	891 case EXTENDED_ARG:
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	892 goto exitUnchanged;
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	893
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	894 /* Replace RETURN LOAD_CONST None RETURN with just RETURN */
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	895 case RETURN_VALUE:
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	896 if (i+4 >= codelen \|\|
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	897 codestr[i+4] != RETURN_VALUE \|\|
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	898 !ISBASICBLOCK(blocks,i,5))
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	899 continue;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	900 memset(codestr+i+1, NOP, 4);
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	901 break;
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	902 }
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	903 }
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	904
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	905 /* Fixup linenotab */
33875 24fc3eaa19e0 Simplify and future proof NOP counting in the peepholer. Raymond Hettinger <python@rcn.com> parents: 33861 diff changeset	906 for (i=0, nops=0 ; i<codelen ; i += CODESIZE(codestr[i])) {
24fc3eaa19e0 Simplify and future proof NOP counting in the peepholer. Raymond Hettinger <python@rcn.com> parents: 33861 diff changeset	907 addrmap[i] = i - nops;
24fc3eaa19e0 Simplify and future proof NOP counting in the peepholer. Raymond Hettinger <python@rcn.com> parents: 33861 diff changeset	908 if (codestr[i] == NOP)
24fc3eaa19e0 Simplify and future proof NOP counting in the peepholer. Raymond Hettinger <python@rcn.com> parents: 33861 diff changeset	909 nops++;
24fc3eaa19e0 Simplify and future proof NOP counting in the peepholer. Raymond Hettinger <python@rcn.com> parents: 33861 diff changeset	910 }
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	911 cum_orig_line = 0;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	912 last_line = 0;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	913 for (i=0 ; i < tabsiz ; i+=2) {
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	914 cum_orig_line += lineno[i];
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	915 new_line = addrmap[cum_orig_line];
33272 bac997b79b19 Bypass peepholing of code with lineno tables having intervals >= 255. Raymond Hettinger <python@rcn.com> parents: 33271 diff changeset	916 assert (new_line - last_line < 255);
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	917 lineno[i] =((unsigned char)(new_line - last_line));
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	918 last_line = new_line;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	919 }
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	920
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	921 /* Remove NOPs and fixup jump targets */
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	922 for (i=0, h=0 ; i<codelen ; ) {
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	923 opcode = codestr[i];
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	924 switch (opcode) {
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	925 case NOP:
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	926 i++;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	927 continue;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	928
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	929 case JUMP_ABSOLUTE:
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	930 case CONTINUE_LOOP:
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	931 j = addrmap[GETARG(codestr, i)];
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	932 SETARG(codestr, i, j);
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	933 break;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	934
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	935 case FOR_ITER:
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	936 case JUMP_FORWARD:
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	937 case JUMP_IF_FALSE:
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	938 case JUMP_IF_TRUE:
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	939 case SETUP_LOOP:
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	940 case SETUP_EXCEPT:
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	941 case SETUP_FINALLY:
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	942 j = addrmap[GETARG(codestr, i) + i + 3] - addrmap[i] - 3;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	943 SETARG(codestr, i, j);
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	944 break;
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	945 }
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	946 adj = CODESIZE(opcode);
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	947 while (adj--)
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	948 codestr[h++] = codestr[i++];
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	949 }
33249 c654334dc961 Incorporate review comments courtesy of Neal Norwitz: Raymond Hettinger <python@rcn.com> parents: 33248 diff changeset	950 assert(h + nops == codelen);
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	951
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	952 code = PyString_FromStringAndSize((char *)codestr, h);
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	953 PyMem_Free(addrmap);
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	954 PyMem_Free(codestr);
31728 6509354e7876 Improve byte coding for multiple assignments. Raymond Hettinger <python@rcn.com> parents: 31618 diff changeset	955 PyMem_Free(blocks);
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	956 return code;
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	957
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	958 exitUnchanged:
33860 3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	959 if (blocks != NULL)
3467288089a1 Adopt some peepholer suggestions from Armin Rigo: Raymond Hettinger <python@rcn.com> parents: 33838 diff changeset	960 PyMem_Free(blocks);
33248 1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	961 if (addrmap != NULL)
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	962 PyMem_Free(addrmap);
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	963 if (codestr != NULL)
1f9b9c226b43 SF Patch #1013667: Cleanup Peepholer Output Raymond Hettinger <python@rcn.com> parents: 33169 diff changeset	964 PyMem_Free(codestr);
28406 733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	965 Py_INCREF(code);
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	966 return code;
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	967 }
733729261c41 SF patch #707257: Improve code generation Raymond Hettinger <python@rcn.com> parents: 28402 diff changeset	968
33539 2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	969 /* End: Peephole optimizations ----------------------------------------- */
2b49b4a85d9e SF patch #1031667: Fold tuples of constants into a single constant Raymond Hettinger <python@rcn.com> parents: 33353 diff changeset	970
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	971 /*
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	972
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	973 Leave this debugging code for just a little longer.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	974
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	975 static void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	976 compiler_display_symbols(PyObject name, PyObject symbols)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	977 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	978 PyObject key, value;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	979 int flags, pos = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	980
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	981 fprintf(stderr, "block %s\n", PyString_AS_STRING(name));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	982 while (PyDict_Next(symbols, &pos, &key, &value)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	983 flags = PyInt_AsLong(value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	984 fprintf(stderr, "var %s:", PyString_AS_STRING(key));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	985 if (flags & DEF_GLOBAL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	986 fprintf(stderr, " declared_global");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	987 if (flags & DEF_LOCAL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	988 fprintf(stderr, " local");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	989 if (flags & DEF_PARAM)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	990 fprintf(stderr, " param");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	991 if (flags & DEF_STAR)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	992 fprintf(stderr, " stararg");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	993 if (flags & DEF_DOUBLESTAR)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	994 fprintf(stderr, " starstar");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	995 if (flags & DEF_INTUPLE)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	996 fprintf(stderr, " tuple");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	997 if (flags & DEF_FREE)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	998 fprintf(stderr, " free");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	999 if (flags & DEF_FREE_GLOBAL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1000 fprintf(stderr, " global");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1001 if (flags & DEF_FREE_CLASS)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1002 fprintf(stderr, " free/class");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1003 if (flags & DEF_IMPORT)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1004 fprintf(stderr, " import");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1005 fprintf(stderr, "\n");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1006 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1007 fprintf(stderr, "\n");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1008 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1009 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1010
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1011 static void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1012 compiler_unit_check(struct compiler_unit *u)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1013 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1014 basicblock *block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1015 for (block = u->u_blocks; block != NULL; block = block->b_list) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1016 assert(block != (void *)0xcbcbcbcb);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1017 assert(block != (void *)0xfbfbfbfb);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1018 assert(block != (void *)0xdbdbdbdb);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1019 if (block->b_instr != NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1020 assert(block->b_ialloc > 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1021 assert(block->b_iused > 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1022 assert(block->b_ialloc >= block->b_iused);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1023 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1024 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1025 assert (block->b_iused == 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1026 assert (block->b_ialloc == 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1027 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1028 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1029 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1030
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1031 static void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1032 compiler_unit_free(struct compiler_unit *u)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1033 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1034 basicblock b, next;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1035
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1036 compiler_unit_check(u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1037 b = u->u_blocks;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1038 while (b != NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1039 if (b->b_instr)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1040 PyObject_Free((void *)b->b_instr);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1041 next = b->b_list;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1042 PyObject_Free((void *)b);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1043 b = next;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1044 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1045 Py_XDECREF(u->u_ste);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1046 Py_XDECREF(u->u_name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1047 Py_XDECREF(u->u_consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1048 Py_XDECREF(u->u_names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1049 Py_XDECREF(u->u_varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1050 Py_XDECREF(u->u_freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1051 Py_XDECREF(u->u_cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1052 Py_XDECREF(u->u_private);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1053 PyObject_Free(u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1054 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1055
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1056 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1057 compiler_enter_scope(struct compiler c, identifier name, void key,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1058 int lineno)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1059 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1060 struct compiler_unit *u;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1061
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1062 u = PyObject_Malloc(sizeof(struct compiler_unit));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1063 memset(u, 0, sizeof(struct compiler_unit));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1064 u->u_argcount = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1065 u->u_ste = PySymtable_Lookup(c->c_st, key);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1066 if (!u->u_ste) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1067 compiler_unit_free(u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1068 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1069 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1070 Py_INCREF(name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1071 u->u_name = name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1072 u->u_varnames = list2dict(u->u_ste->ste_varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1073 u->u_cellvars = dictbytype(u->u_ste->ste_symbols, CELL, 0, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1074 u->u_freevars = dictbytype(u->u_ste->ste_symbols, FREE, DEF_FREE_CLASS,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1075 PyDict_Size(u->u_cellvars));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1076
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1077 u->u_blocks = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1078 u->u_tmpname = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1079 u->u_nfblocks = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1080 u->u_firstlineno = lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1081 u->u_lineno = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1082 u->u_lineno_set = false;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1083 u->u_consts = PyDict_New();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1084 if (!u->u_consts) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1085 compiler_unit_free(u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1086 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1087 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1088 u->u_names = PyDict_New();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1089 if (!u->u_names) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1090 compiler_unit_free(u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1091 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1092 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1093
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1094 u->u_private = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1095
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1096 /* Push the old compiler_unit on the stack. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1097 if (c->u) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1098 PyObject *wrapper = PyCObject_FromVoidPtr(c->u, NULL);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1099 if (PyList_Append(c->c_stack, wrapper) < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1100 compiler_unit_free(u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1101 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1102 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1103 Py_DECREF(wrapper);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1104 u->u_private = c->u->u_private;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1105 Py_XINCREF(u->u_private);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1106 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1107 c->u = u;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1108
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1109 c->c_nestlevel++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1110 if (compiler_use_new_block(c) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1111 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1112
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1113 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1114 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1115
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1116 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1117 compiler_exit_scope(struct compiler *c)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1118 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1119 int n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1120 PyObject *wrapper;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1121
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1122 c->c_nestlevel--;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1123 compiler_unit_free(c->u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1124 /* Restore c->u to the parent unit. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1125 n = PyList_GET_SIZE(c->c_stack) - 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1126 if (n >= 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1127 wrapper = PyList_GET_ITEM(c->c_stack, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1128 c->u = (struct compiler_unit *)PyCObject_AsVoidPtr(wrapper);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1129 if (PySequence_DelItem(c->c_stack, n) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1130 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1131 compiler_unit_check(c->u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1132 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1133 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1134 c->u = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1135
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1136 return 1; /* XXX void? */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1137 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1138
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1139 /* Allocate a new block and return a pointer to it.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1140 Returns NULL on error.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1141 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1142
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1143 static basicblock *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1144 compiler_new_block(struct compiler *c)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1145 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1146 basicblock *b;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1147 struct compiler_unit *u;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1148
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1149 u = c->u;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1150 b = (basicblock *)PyObject_Malloc(sizeof(basicblock));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1151 if (b == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1152 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1153 memset((void *)b, 0, sizeof(basicblock));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1154 assert (b->b_next == NULL);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1155 b->b_list = u->u_blocks;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1156 u->u_blocks = b;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1157 return b;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1158 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1159
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1160 static void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1161 compiler_use_block(struct compiler c, basicblock block)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1162 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1163 assert (block != NULL);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1164 c->u->u_curblock = block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1165 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1166
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1167 static basicblock *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1168 compiler_use_new_block(struct compiler *c)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1169 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1170 basicblock *block = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1171 if (block == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1172 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1173 c->u->u_curblock = block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1174 return block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1175 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1176
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1177 static basicblock *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1178 compiler_next_block(struct compiler *c)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1179 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1180 basicblock *block = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1181 if (block == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1182 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1183 c->u->u_curblock->b_next = block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1184 c->u->u_curblock = block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1185 return block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1186 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1187
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1188 static basicblock *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1189 compiler_use_next_block(struct compiler c, basicblock block)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1190 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1191 assert(block != NULL);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1192 c->u->u_curblock->b_next = block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1193 c->u->u_curblock = block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1194 return block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1195 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1196
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1197 /* Returns the offset of the next instruction in the current block's
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1198 b_instr array. Resizes the b_instr as necessary.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1199 Returns -1 on failure.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1200 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1201
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1202 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1203 compiler_next_instr(struct compiler c, basicblock b)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1204 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1205 assert(b != NULL);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1206 if (b->b_instr == NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1207 b->b_instr = PyObject_Malloc(sizeof(struct instr) *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1208 DEFAULT_BLOCK_SIZE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1209 if (b->b_instr == NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1210 PyErr_NoMemory();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1211 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1212 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1213 b->b_ialloc = DEFAULT_BLOCK_SIZE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1214 memset((char *)b->b_instr, 0,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1215 sizeof(struct instr) * DEFAULT_BLOCK_SIZE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1216 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1217 else if (b->b_iused == b->b_ialloc) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1218 size_t oldsize, newsize;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1219 oldsize = b->b_ialloc * sizeof(struct instr);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1220 newsize = oldsize << 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1221 if (newsize == 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1222 PyErr_NoMemory();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1223 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1224 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1225 b->b_ialloc <<= 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1226 b->b_instr = PyObject_Realloc((void *)b->b_instr, newsize);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1227 if (b->b_instr == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1228 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1229 memset((char *)b->b_instr + oldsize, 0, newsize - oldsize);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1230 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1231 return b->b_iused++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1232 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1233
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1234 static void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1235 compiler_set_lineno(struct compiler *c, int off)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1236 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1237 basicblock *b;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1238 if (c->u->u_lineno_set)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1239 return;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1240 c->u->u_lineno_set = true;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1241 b = c->u->u_curblock;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1242 b->b_instr[off].i_lineno = c->u->u_lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1243 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1244
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1245 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1246 opcode_stack_effect(int opcode, int oparg)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1247 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1248 switch (opcode) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1249 case POP_TOP:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1250 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1251 case ROT_TWO:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1252 case ROT_THREE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1253 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1254 case DUP_TOP:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1255 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1256 case ROT_FOUR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1257 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1258
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1259 case UNARY_POSITIVE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1260 case UNARY_NEGATIVE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1261 case UNARY_NOT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1262 case UNARY_CONVERT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1263 case UNARY_INVERT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1264 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1265
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1266 case BINARY_POWER:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1267 case BINARY_MULTIPLY:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1268 case BINARY_DIVIDE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1269 case BINARY_MODULO:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1270 case BINARY_ADD:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1271 case BINARY_SUBTRACT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1272 case BINARY_SUBSCR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1273 case BINARY_FLOOR_DIVIDE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1274 case BINARY_TRUE_DIVIDE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1275 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1276 case INPLACE_FLOOR_DIVIDE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1277 case INPLACE_TRUE_DIVIDE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1278 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1279
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1280 case SLICE+0:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1281 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1282 case SLICE+1:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1283 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1284 case SLICE+2:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1285 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1286 case SLICE+3:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1287 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1288
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1289 case STORE_SLICE+0:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1290 return -2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1291 case STORE_SLICE+1:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1292 return -3;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1293 case STORE_SLICE+2:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1294 return -3;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1295 case STORE_SLICE+3:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1296 return -4;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1297
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1298 case DELETE_SLICE+0:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1299 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1300 case DELETE_SLICE+1:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1301 return -2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1302 case DELETE_SLICE+2:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1303 return -2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1304 case DELETE_SLICE+3:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1305 return -3;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1306
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1307 case INPLACE_ADD:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1308 case INPLACE_SUBTRACT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1309 case INPLACE_MULTIPLY:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1310 case INPLACE_DIVIDE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1311 case INPLACE_MODULO:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1312 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1313 case STORE_SUBSCR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1314 return -3;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1315 case DELETE_SUBSCR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1316 return -2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1317
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1318 case BINARY_LSHIFT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1319 case BINARY_RSHIFT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1320 case BINARY_AND:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1321 case BINARY_XOR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1322 case BINARY_OR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1323 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1324 case INPLACE_POWER:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1325 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1326 case GET_ITER:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1327 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1328
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1329 case PRINT_EXPR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1330 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1331 case PRINT_ITEM:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1332 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1333 case PRINT_NEWLINE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1334 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1335 case PRINT_ITEM_TO:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1336 return -2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1337 case PRINT_NEWLINE_TO:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1338 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1339 case INPLACE_LSHIFT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1340 case INPLACE_RSHIFT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1341 case INPLACE_AND:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1342 case INPLACE_XOR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1343 case INPLACE_OR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1344 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1345 case BREAK_LOOP:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1346 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1347
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1348 case LOAD_LOCALS:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1349 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1350 case RETURN_VALUE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1351 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1352 case IMPORT_STAR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1353 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1354 case EXEC_STMT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1355 return -3;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1356 case YIELD_VALUE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1357 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1358
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1359 case POP_BLOCK:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1360 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1361 case END_FINALLY:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1362 return -1; /* or -2 or -3 if exception occurred */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1363 case BUILD_CLASS:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1364 return -2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1365
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1366 case STORE_NAME:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1367 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1368 case DELETE_NAME:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1369 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1370 case UNPACK_SEQUENCE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1371 return oparg-1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1372 case FOR_ITER:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1373 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1374
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1375 case STORE_ATTR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1376 return -2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1377 case DELETE_ATTR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1378 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1379 case STORE_GLOBAL:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1380 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1381 case DELETE_GLOBAL:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1382 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1383 case DUP_TOPX:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1384 return oparg;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1385 case LOAD_CONST:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1386 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1387 case LOAD_NAME:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1388 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1389 case BUILD_TUPLE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1390 case BUILD_LIST:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1391 return 1-oparg;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1392 case BUILD_MAP:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1393 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1394 case LOAD_ATTR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1395 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1396 case COMPARE_OP:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1397 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1398 case IMPORT_NAME:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1399 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1400 case IMPORT_FROM:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1401 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1402
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1403 case JUMP_FORWARD:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1404 case JUMP_IF_FALSE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1405 case JUMP_IF_TRUE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1406 case JUMP_ABSOLUTE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1407 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1408
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1409 case LOAD_GLOBAL:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1410 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1411
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1412 case CONTINUE_LOOP:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1413 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1414 case SETUP_LOOP:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1415 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1416 case SETUP_EXCEPT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1417 case SETUP_FINALLY:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1418 return 3; /* actually pushed by an exception */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1419
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1420 case LOAD_FAST:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1421 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1422 case STORE_FAST:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1423 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1424 case DELETE_FAST:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1425 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1426
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1427 case RAISE_VARARGS:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1428 return -oparg;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1429 #define NARGS(o) (((o) % 256) + 2*((o) / 256))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1430 case CALL_FUNCTION:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1431 return -NARGS(oparg);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1432 case CALL_FUNCTION_VAR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1433 case CALL_FUNCTION_KW:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1434 return -NARGS(oparg)-1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1435 case CALL_FUNCTION_VAR_KW:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1436 return -NARGS(oparg)-2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1437 #undef NARGS
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1438 case MAKE_FUNCTION:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1439 return -oparg;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1440 case BUILD_SLICE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1441 if (oparg == 3)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1442 return -2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1443 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1444 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1445
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1446 case MAKE_CLOSURE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1447 return -oparg;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1448 case LOAD_CLOSURE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1449 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1450 case LOAD_DEREF:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1451 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1452 case STORE_DEREF:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1453 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1454 default:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1455 fprintf(stderr, "opcode = %d\n", opcode);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1456 Py_FatalError("opcode_stack_effect()");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1457
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1458 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1459 return 0; /* not reachable */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1460 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1461
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1462 /* Add an opcode with no argument.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1463 Returns 0 on failure, 1 on success.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1464 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1465
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1466 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1467 compiler_addop(struct compiler *c, int opcode)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1468 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1469 basicblock *b;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1470 struct instr *i;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1471 int off;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1472 off = compiler_next_instr(c, c->u->u_curblock);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1473 if (off < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1474 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1475 b = c->u->u_curblock;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1476 i = &b->b_instr[off];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1477 i->i_opcode = opcode;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1478 i->i_hasarg = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1479 if (opcode == RETURN_VALUE)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1480 b->b_return = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1481 compiler_set_lineno(c, off);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1482 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1483 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1484
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1485 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1486 compiler_add_o(struct compiler c, PyObject dict, PyObject *o)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1487 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1488 PyObject t, v;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1489 int arg;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1490
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1491 /* necessary to make sure types aren't coerced (e.g., int and long) */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1492 /* XXX should use: t = PyTuple_Pack(2, o, o->ob_type); */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1493 t = Py_BuildValue("(OO)", o, o->ob_type);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1494 if (t == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1495 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1496
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1497 v = PyDict_GetItem(dict, t);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1498 if (!v) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1499 arg = PyDict_Size(dict);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1500 v = PyInt_FromLong(arg);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1501 if (!v) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1502 Py_DECREF(t);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1503 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1504 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1505 if (PyDict_SetItem(dict, t, v) < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1506 Py_DECREF(t);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1507 Py_DECREF(v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1508 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1509 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1510 Py_DECREF(v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1511 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1512 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1513 arg = PyInt_AsLong(v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1514 Py_DECREF(t);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1515 return arg;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1516 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1517
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1518 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1519 compiler_addop_o(struct compiler c, int opcode, PyObject dict,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1520 PyObject *o)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1521 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1522 int arg = compiler_add_o(c, dict, o);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1523 if (arg < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1524 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1525 return compiler_addop_i(c, opcode, arg);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1526 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1527
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1528 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1529 compiler_addop_name(struct compiler c, int opcode, PyObject dict,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1530 PyObject *o)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1531 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1532 int arg;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1533 PyObject *mangled = _Py_Mangle(c->u->u_private, o);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1534 if (!mangled)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1535 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1536 arg = compiler_add_o(c, dict, mangled);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1537 Py_DECREF(mangled);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1538 if (arg < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1539 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1540 return compiler_addop_i(c, opcode, arg);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1541 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1542
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1543 /* Add an opcode with an integer argument.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1544 Returns 0 on failure, 1 on success.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1545 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1546
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1547 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1548 compiler_addop_i(struct compiler *c, int opcode, int oparg)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1549 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1550 struct instr *i;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1551 int off;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1552 off = compiler_next_instr(c, c->u->u_curblock);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1553 if (off < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1554 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1555 i = &c->u->u_curblock->b_instr[off];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1556 i->i_opcode = opcode;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1557 i->i_oparg = oparg;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1558 i->i_hasarg = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1559 compiler_set_lineno(c, off);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1560 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1561 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1562
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1563 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1564 compiler_addop_j(struct compiler c, int opcode, basicblock b, int absolute)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1565 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1566 struct instr *i;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1567 int off;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1568
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1569 assert(b != NULL);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1570 off = compiler_next_instr(c, c->u->u_curblock);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1571 if (off < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1572 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1573 compiler_set_lineno(c, off);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1574 i = &c->u->u_curblock->b_instr[off];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1575 i->i_opcode = opcode;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1576 i->i_target = b;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1577 i->i_hasarg = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1578 if (absolute)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1579 i->i_jabs = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1580 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1581 i->i_jrel = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1582 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1583 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1584
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1585 /* The distinction between NEW_BLOCK and NEXT_BLOCK is subtle. (I'd
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1586 like to find better names.) NEW_BLOCK() creates a new block and sets
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1587 it as the current block. NEXT_BLOCK() also creates an implicit jump
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1588 from the current block to the new block.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1589 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1590
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1591 /* XXX The returns inside these macros make it impossible to decref
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1592 objects created in the local function.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1593 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1594
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1595
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1596 #define NEW_BLOCK(C) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1597 if (compiler_use_new_block((C)) == NULL) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1598 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1599 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1600
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1601 #define NEXT_BLOCK(C) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1602 if (compiler_next_block((C)) == NULL) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1603 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1604 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1605
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1606 #define ADDOP(C, OP) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1607 if (!compiler_addop((C), (OP))) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1608 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1609 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1610
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1611 #define ADDOP_O(C, OP, O, TYPE) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1612 if (!compiler_addop_o((C), (OP), (C)->u->u_ ## TYPE, (O))) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1613 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1614 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1615
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1616 #define ADDOP_NAME(C, OP, O, TYPE) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1617 if (!compiler_addop_name((C), (OP), (C)->u->u_ ## TYPE, (O))) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1618 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1619 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1620
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1621 #define ADDOP_I(C, OP, O) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1622 if (!compiler_addop_i((C), (OP), (O))) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1623 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1624 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1625
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1626 #define ADDOP_JABS(C, OP, O) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1627 if (!compiler_addop_j((C), (OP), (O), 1)) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1628 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1629 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1630
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1631 #define ADDOP_JREL(C, OP, O) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1632 if (!compiler_addop_j((C), (OP), (O), 0)) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1633 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1634 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1635
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1636 /* VISIT and VISIT_SEQ takes an ASDL type as their second argument. They use
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1637 the ASDL name to synthesize the name of the C type and the visit function.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1638 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1639
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1640 #define VISIT(C, TYPE, V) {\
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1641 if (!compiler_visit_ ## TYPE((C), (V))) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1642 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1643 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1644
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1645 #define VISIT_SLICE(C, V, CTX) {\
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1646 if (!compiler_visit_slice((C), (V), (CTX))) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1647 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1648 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1649
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1650 #define VISIT_SEQ(C, TYPE, SEQ) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1651 int i; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1652 asdl_seq seq = (SEQ); / avoid variable capture */ \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1653 for (i = 0; i < asdl_seq_LEN(seq); i++) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1654 TYPE ## _ty elt = asdl_seq_GET(seq, i); \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1655 if (!compiler_visit_ ## TYPE((C), elt)) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1656 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1657 } \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1658 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1659
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1660 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1661 compiler_isdocstring(stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1662 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1663 if (s->kind != Expr_kind)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1664 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1665 return s->v.Expr.value->kind == Str_kind;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1666 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1667
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1668 /* Compile a sequence of statements, checking for a docstring. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1669
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1670 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1671 compiler_body(struct compiler c, asdl_seq stmts)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1672 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1673 int i = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1674 stmt_ty st;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1675
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1676 if (!asdl_seq_LEN(stmts))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1677 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1678 st = asdl_seq_GET(stmts, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1679 if (compiler_isdocstring(st)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1680 i = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1681 VISIT(c, expr, st->v.Expr.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1682 if (!compiler_nameop(c, __doc__, Store))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1683 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1684 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1685 for (; i < asdl_seq_LEN(stmts); i++)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1686 VISIT(c, stmt, asdl_seq_GET(stmts, i));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1687 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1688 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1689
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1690 static PyCodeObject *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1691 compiler_mod(struct compiler *c, mod_ty mod)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1692 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1693 PyCodeObject *co;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1694 int addNone = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1695 static PyObject *module;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1696 if (!module) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1697 module = PyString_FromString("<module>");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1698 if (!module)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1699 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1700 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1701 if (!compiler_enter_scope(c, module, mod, 1))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1702 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1703 switch (mod->kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1704 case Module_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1705 if (!compiler_body(c, mod->v.Module.body))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1706 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1707 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1708 case Interactive_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1709 c->c_interactive = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1710 VISIT_SEQ(c, stmt, mod->v.Interactive.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1711 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1712 case Expression_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1713 VISIT(c, expr, mod->v.Expression.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1714 addNone = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1715 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1716 case Suite_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1717 assert(0); /* XXX: what should we do here? */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1718 VISIT_SEQ(c, stmt, mod->v.Suite.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1719 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1720 default:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1721 assert(0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1722 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1723 co = assemble(c, addNone);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1724 compiler_exit_scope(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1725 return co;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1726 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1727
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1728 /* The test for LOCAL must come before the test for FREE in order to
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1729 handle classes where name is both local and free. The local var is
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1730 a method and the free var is a free var referenced within a method.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1731 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1732
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1733 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1734 get_ref_type(struct compiler c, PyObject name)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1735 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1736 int scope = PyST_GetScope(c->u->u_ste, name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1737 if (scope == 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1738 char buf[350];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1739 PyOS_snprintf(buf, sizeof(buf),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1740 "unknown scope for %.100s in %.100s(%s) in %s\n"
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1741 "symbols: %s\nlocals: %s\nglobals: %s\n",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1742 PyString_AS_STRING(name),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1743 PyString_AS_STRING(c->u->u_name),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1744 PyObject_REPR(c->u->u_ste->ste_id),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1745 c->c_filename,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1746 PyObject_REPR(c->u->u_ste->ste_symbols),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1747 PyObject_REPR(c->u->u_varnames),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1748 PyObject_REPR(c->u->u_names)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1749 );
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1750 Py_FatalError(buf);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1751 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1752
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1753 return scope;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1754 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1755
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1756 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1757 compiler_lookup_arg(PyObject dict, PyObject name)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1758 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1759 PyObject k, v;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1760 k = Py_BuildValue("(OO)", name, name->ob_type);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1761 if (k == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1762 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1763 v = PyDict_GetItem(dict, k);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1764 if (v == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1765 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1766 return PyInt_AS_LONG(v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1767 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1768
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1769 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1770 compiler_make_closure(struct compiler c, PyCodeObject co, int args)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1771 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1772 int i, free = PyCode_GetNumFree(co);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1773 if (free == 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1774 ADDOP_O(c, LOAD_CONST, (PyObject*)co, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1775 ADDOP_I(c, MAKE_FUNCTION, args);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1776 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1777 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1778 for (i = 0; i < free; ++i) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1779 /* Bypass com_addop_varname because it will generate
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1780 LOAD_DEREF but LOAD_CLOSURE is needed.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1781 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1782 PyObject *name = PyTuple_GET_ITEM(co->co_freevars, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1783 int arg, reftype;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1784
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1785 /* Special case: If a class contains a method with a
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1786 free variable that has the same name as a method,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1787 the name will be considered free and local in the
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1788 class. It should be handled by the closure, as
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1789 well as by the normal name loookup logic.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1790 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1791 reftype = get_ref_type(c, name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1792 if (reftype == CELL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1793 arg = compiler_lookup_arg(c->u->u_cellvars, name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1794 else /* (reftype == FREE) */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1795 arg = compiler_lookup_arg(c->u->u_freevars, name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1796 if (arg == -1) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1797 printf("lookup %s in %s %d %d\n"
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1798 "freevars of %s: %s\n",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1799 PyObject_REPR(name),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1800 PyString_AS_STRING(c->u->u_name),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1801 reftype, arg,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1802 PyString_AS_STRING(co->co_name),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1803 PyObject_REPR(co->co_freevars));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1804 Py_FatalError("compiler_make_closure()");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1805 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1806 ADDOP_I(c, LOAD_CLOSURE, arg);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1807 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1808 ADDOP_I(c, BUILD_TUPLE, free);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1809 ADDOP_O(c, LOAD_CONST, (PyObject*)co, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1810 ADDOP_I(c, MAKE_CLOSURE, args);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1811 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1812 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1813
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1814 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1815 compiler_decorators(struct compiler c, asdl_seq decos)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1816 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1817 int i;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1818
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1819 if (!decos)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1820 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1821
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1822 for (i = 0; i < asdl_seq_LEN(decos); i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1823 VISIT(c, expr, asdl_seq_GET(decos, i));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1824 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1825 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1826 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1827
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1828 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1829 compiler_arguments(struct compiler *c, arguments_ty args)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1830 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1831 int i;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1832 int n = asdl_seq_LEN(args->args);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1833 /* Correctly handle nested argument lists */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1834 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1835 expr_ty arg = asdl_seq_GET(args->args, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1836 if (arg->kind == Tuple_kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1837 PyObject *id = PyString_FromFormat(".%d", i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1838 if (id == NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1839 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1840 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1841 if (!compiler_nameop(c, id, Load)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1842 Py_DECREF(id);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1843 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1844 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1845 Py_DECREF(id);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1846 VISIT(c, expr, arg);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1847 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1848 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1849 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1850 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1851
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1852 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1853 compiler_function(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1854 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1855 PyCodeObject *co;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1856 PyObject *first_const = Py_None;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1857 arguments_ty args = s->v.FunctionDef.args;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1858 asdl_seq* decos = s->v.FunctionDef.decorators;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1859 stmt_ty st;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1860 int i, n, docstring;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1861
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1862 assert(s->kind == FunctionDef_kind);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1863
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1864 if (!compiler_decorators(c, decos))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1865 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1866 if (args->defaults)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1867 VISIT_SEQ(c, expr, args->defaults);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1868 if (!compiler_enter_scope(c, s->v.FunctionDef.name, (void *)s,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1869 s->lineno))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1870 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1871
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1872 st = asdl_seq_GET(s->v.FunctionDef.body, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1873 docstring = compiler_isdocstring(st);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1874 if (docstring)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1875 first_const = st->v.Expr.value->v.Str.s;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1876 if (compiler_add_o(c, c->u->u_consts, first_const) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1877 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1878
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1879 /* unpack nested arguments */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1880 compiler_arguments(c, args);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1881
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1882 c->u->u_argcount = asdl_seq_LEN(args->args);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1883 n = asdl_seq_LEN(s->v.FunctionDef.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1884 /* if there was a docstring, we need to skip the first statement */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1885 for (i = docstring; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1886 stmt_ty s2 = asdl_seq_GET(s->v.FunctionDef.body, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1887 if (i == 0 && s2->kind == Expr_kind &&
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1888 s2->v.Expr.value->kind == Str_kind)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1889 continue;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1890 VISIT(c, stmt, s2);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1891 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1892 co = assemble(c, 1);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1893 if (co == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1894 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1895 compiler_exit_scope(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1896
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1897 compiler_make_closure(c, co, asdl_seq_LEN(args->defaults));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1898
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1899 for (i = 0; i < asdl_seq_LEN(decos); i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1900 ADDOP_I(c, CALL_FUNCTION, 1);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1901 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1902
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1903 return compiler_nameop(c, s->v.FunctionDef.name, Store);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1904 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1905
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1906 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1907 compiler_class(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1908 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1909 int n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1910 PyCodeObject *co;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1911 PyObject *str;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1912 /* push class name on stack, needed by BUILD_CLASS */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1913 ADDOP_O(c, LOAD_CONST, s->v.ClassDef.name, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1914 /* push the tuple of base classes on the stack */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1915 n = asdl_seq_LEN(s->v.ClassDef.bases);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1916 if (n > 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1917 VISIT_SEQ(c, expr, s->v.ClassDef.bases);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1918 ADDOP_I(c, BUILD_TUPLE, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1919 if (!compiler_enter_scope(c, s->v.ClassDef.name, (void *)s,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1920 s->lineno))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1921 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1922 c->u->u_private = s->v.ClassDef.name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1923 Py_INCREF(c->u->u_private);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1924 str = PyString_InternFromString("__name__");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1925 if (!str \|\| !compiler_nameop(c, str, Load)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1926 Py_XDECREF(str);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1927 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1928 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1929
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1930 Py_DECREF(str);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1931 str = PyString_InternFromString("__module__");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1932 if (!str \|\| !compiler_nameop(c, str, Store)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1933 Py_XDECREF(str);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1934 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1935 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1936 Py_DECREF(str);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1937
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1938 if (!compiler_body(c, s->v.ClassDef.body))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1939 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1940
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1941 ADDOP(c, LOAD_LOCALS);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1942 ADDOP(c, RETURN_VALUE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1943 co = assemble(c, 1);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1944 if (co == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1945 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1946 compiler_exit_scope(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1947
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1948 compiler_make_closure(c, co, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1949 ADDOP_I(c, CALL_FUNCTION, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1950 ADDOP(c, BUILD_CLASS);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1951 if (!compiler_nameop(c, s->v.ClassDef.name, Store))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1952 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1953 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1954 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1955
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1956 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1957 compiler_lambda(struct compiler *c, expr_ty e)
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	1958 {
5373 5880384d7c71 Quickly renamed the remaining files -- this directory is done. Guido van Rossum <guido@python.org> parents: 5287 diff changeset	1959 PyCodeObject *co;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1960 identifier name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1961 arguments_ty args = e->v.Lambda.args;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1962 assert(e->kind == Lambda_kind);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1963
35767 7ee6880cb16f Use <lamba> as the function name for lambdas (matches old compiler). Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35759 diff changeset	1964 name = PyString_InternFromString("<lambda>");
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1965 if (!name)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1966 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1967
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1968 if (args->defaults)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1969 VISIT_SEQ(c, expr, args->defaults);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1970 if (!compiler_enter_scope(c, name, (void *)e, e->lineno))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1971 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1972
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1973 /* unpack nested arguments */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1974 compiler_arguments(c, args);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1975
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1976 c->u->u_argcount = asdl_seq_LEN(args->args);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1977 VISIT(c, expr, e->v.Lambda.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1978 ADDOP(c, RETURN_VALUE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1979 co = assemble(c, 1);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1980 if (co == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1981 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1982 compiler_exit_scope(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1983
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1984 compiler_make_closure(c, co, asdl_seq_LEN(args->defaults));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1985 Py_DECREF(name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1986
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1987 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1988 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1989
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1990 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1991 compiler_print(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1992 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1993 int i, n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1994 bool dest;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1995
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1996 assert(s->kind == Print_kind);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1997 n = asdl_seq_LEN(s->v.Print.values);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1998 dest = false;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	1999 if (s->v.Print.dest) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2000 VISIT(c, expr, s->v.Print.dest);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2001 dest = true;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2002 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2003 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2004 expr_ty e = (expr_ty)asdl_seq_GET(s->v.Print.values, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2005 if (dest) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2006 ADDOP(c, DUP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2007 VISIT(c, expr, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2008 ADDOP(c, ROT_TWO);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2009 ADDOP(c, PRINT_ITEM_TO);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2010 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2011 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2012 VISIT(c, expr, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2013 ADDOP(c, PRINT_ITEM);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2014 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2015 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2016 if (s->v.Print.nl) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2017 if (dest)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2018 ADDOP(c, PRINT_NEWLINE_TO)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2019 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2020 ADDOP(c, PRINT_NEWLINE)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2021 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2022 else if (dest)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2023 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2024 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2025 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2026
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2027 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2028 compiler_if(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2029 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2030 basicblock end, next;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2031
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2032 assert(s->kind == If_kind);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2033 end = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2034 if (end == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2035 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2036 next = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2037 if (next == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2038 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2039 VISIT(c, expr, s->v.If.test);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2040 ADDOP_JREL(c, JUMP_IF_FALSE, next);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2041 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2042 VISIT_SEQ(c, stmt, s->v.If.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2043 ADDOP_JREL(c, JUMP_FORWARD, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2044 compiler_use_next_block(c, next);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2045 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2046 if (s->v.If.orelse)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2047 VISIT_SEQ(c, stmt, s->v.If.orelse);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2048 compiler_use_next_block(c, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2049 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2050 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2051
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2052 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2053 compiler_for(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2054 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2055 basicblock start, cleanup, *end;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2056
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2057 start = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2058 cleanup = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2059 end = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2060 if (start == NULL \|\| end == NULL \|\| cleanup == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2061 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2062 ADDOP_JREL(c, SETUP_LOOP, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2063 if (!compiler_push_fblock(c, LOOP, start))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2064 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2065 VISIT(c, expr, s->v.For.iter);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2066 ADDOP(c, GET_ITER);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2067 compiler_use_next_block(c, start);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2068 ADDOP_JREL(c, FOR_ITER, cleanup);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2069 VISIT(c, expr, s->v.For.target);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2070 VISIT_SEQ(c, stmt, s->v.For.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2071 ADDOP_JABS(c, JUMP_ABSOLUTE, start);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2072 compiler_use_next_block(c, cleanup);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2073 ADDOP(c, POP_BLOCK);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2074 compiler_pop_fblock(c, LOOP, start);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2075 VISIT_SEQ(c, stmt, s->v.For.orelse);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2076 compiler_use_next_block(c, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2077 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2078 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2079
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2080 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2081 compiler_while(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2082 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2083 basicblock loop, orelse, end, anchor = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2084 int constant = expr_constant(s->v.While.test);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2085
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2086 if (constant == 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2087 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2088 loop = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2089 end = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2090 if (constant == -1) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2091 anchor = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2092 if (anchor == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2093 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2094 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2095 if (loop == NULL \|\| end == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2096 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2097 if (s->v.While.orelse) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2098 orelse = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2099 if (orelse == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2100 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2101 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2102 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2103 orelse = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2104
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2105 ADDOP_JREL(c, SETUP_LOOP, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2106 compiler_use_next_block(c, loop);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2107 if (!compiler_push_fblock(c, LOOP, loop))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2108 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2109 if (constant == -1) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2110 VISIT(c, expr, s->v.While.test);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2111 ADDOP_JREL(c, JUMP_IF_FALSE, anchor);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2112 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2113 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2114 VISIT_SEQ(c, stmt, s->v.While.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2115 ADDOP_JABS(c, JUMP_ABSOLUTE, loop);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2116
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2117 /* XXX should the two POP instructions be in a separate block
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2118 if there is no else clause ?
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2119 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2120
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2121 if (constant == -1) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2122 compiler_use_next_block(c, anchor);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2123 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2124 ADDOP(c, POP_BLOCK);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2125 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2126 compiler_pop_fblock(c, LOOP, loop);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2127 if (orelse != NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2128 VISIT_SEQ(c, stmt, s->v.While.orelse);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2129 compiler_use_next_block(c, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2130
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2131 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2132 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2133
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2134 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2135 compiler_continue(struct compiler *c)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2136 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2137 static const char LOOP_ERROR_MSG[] = "'continue' not properly in loop";
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	2138 int i;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2139
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2140 if (!c->u->u_nfblocks)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2141 return compiler_error(c, LOOP_ERROR_MSG);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2142 i = c->u->u_nfblocks - 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2143 switch (c->u->u_fblock[i].fb_type) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2144 case LOOP:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2145 ADDOP_JABS(c, JUMP_ABSOLUTE, c->u->u_fblock[i].fb_block);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2146 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2147 case EXCEPT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2148 case FINALLY_TRY:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2149 while (--i >= 0 && c->u->u_fblock[i].fb_type != LOOP)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2150 ;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2151 if (i == -1)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2152 return compiler_error(c, LOOP_ERROR_MSG);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2153 ADDOP_JABS(c, CONTINUE_LOOP, c->u->u_fblock[i].fb_block);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2154 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2155 case FINALLY_END:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2156 return compiler_error(c,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2157 "'continue' not supported inside 'finally' clause");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2158 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2159
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2160 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2161 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2162
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2163 /* Code generated for "try: <body> finally: <finalbody>" is as follows:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2164
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2165 SETUP_FINALLY L
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2166 <code for body>
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2167 POP_BLOCK
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2168 LOAD_CONST <None>
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2169 L: <code for finalbody>
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2170 END_FINALLY
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2171
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2172 The special instructions use the block stack. Each block
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2173 stack entry contains the instruction that created it (here
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2174 SETUP_FINALLY), the level of the value stack at the time the
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2175 block stack entry was created, and a label (here L).
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2176
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2177 SETUP_FINALLY:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2178 Pushes the current value stack level and the label
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2179 onto the block stack.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2180 POP_BLOCK:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2181 Pops en entry from the block stack, and pops the value
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2182 stack until its level is the same as indicated on the
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2183 block stack. (The label is ignored.)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2184 END_FINALLY:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2185 Pops a variable number of entries from the value stack
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2186 and re-raises the exception they specify. The number of
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2187 entries popped depends on the (pseudo) exception type.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2188
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2189 The block stack is unwound when an exception is raised:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2190 when a SETUP_FINALLY entry is found, the exception is pushed
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2191 onto the value stack (and the exception condition is cleared),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2192 and the interpreter jumps to the label gotten from the block
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2193 stack.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2194 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2195
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2196 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2197 compiler_try_finally(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2198 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2199 basicblock body, end;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2200 body = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2201 end = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2202 if (body == NULL \|\| end == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2203 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2204
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2205 ADDOP_JREL(c, SETUP_FINALLY, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2206 compiler_use_next_block(c, body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2207 if (!compiler_push_fblock(c, FINALLY_TRY, body))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2208 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2209 VISIT_SEQ(c, stmt, s->v.TryFinally.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2210 ADDOP(c, POP_BLOCK);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2211 compiler_pop_fblock(c, FINALLY_TRY, body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2212
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2213 ADDOP_O(c, LOAD_CONST, Py_None, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2214 compiler_use_next_block(c, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2215 if (!compiler_push_fblock(c, FINALLY_END, end))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2216 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2217 VISIT_SEQ(c, stmt, s->v.TryFinally.finalbody);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2218 ADDOP(c, END_FINALLY);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2219 compiler_pop_fblock(c, FINALLY_END, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2220
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2221 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2222 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2223
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2224 /*
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2225 Code generated for "try: S except E1, V1: S1 except E2, V2: S2 ...":
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2226 (The contents of the value stack is shown in [], with the top
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2227 at the right; 'tb' is trace-back info, 'val' the exception's
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2228 associated value, and 'exc' the exception.)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2229
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2230 Value stack Label Instruction Argument
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2231 [] SETUP_EXCEPT L1
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2232 [] <code for S>
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2233 [] POP_BLOCK
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2234 [] JUMP_FORWARD L0
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2235
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2236 [tb, val, exc] L1: DUP )
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2237 [tb, val, exc, exc] <evaluate E1> )
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2238 [tb, val, exc, exc, E1] COMPARE_OP EXC_MATCH ) only if E1
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2239 [tb, val, exc, 1-or-0] JUMP_IF_FALSE L2 )
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2240 [tb, val, exc, 1] POP )
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2241 [tb, val, exc] POP
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2242 [tb, val] <assign to V1> (or POP if no V1)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2243 [tb] POP
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2244 [] <code for S1>
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2245 JUMP_FORWARD L0
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2246
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2247 [tb, val, exc, 0] L2: POP
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2248 [tb, val, exc] DUP
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2249 .............................etc.......................
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2250
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2251 [tb, val, exc, 0] Ln+1: POP
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2252 [tb, val, exc] END_FINALLY # re-raise exception
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2253
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2254 [] L0: <next statement>
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2255
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2256 Of course, parts are not generated if Vi or Ei is not present.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2257 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2258 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2259 compiler_try_except(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2260 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2261 basicblock body, orelse, except, end;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2262 int i, n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2263
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2264 body = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2265 except = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2266 orelse = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2267 end = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2268 if (body == NULL \|\| except == NULL \|\| orelse == NULL \|\| end == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2269 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2270 ADDOP_JREL(c, SETUP_EXCEPT, except);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2271 compiler_use_next_block(c, body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2272 if (!compiler_push_fblock(c, EXCEPT, body))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2273 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2274 VISIT_SEQ(c, stmt, s->v.TryExcept.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2275 ADDOP(c, POP_BLOCK);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2276 compiler_pop_fblock(c, EXCEPT, body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2277 ADDOP_JREL(c, JUMP_FORWARD, orelse);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2278 n = asdl_seq_LEN(s->v.TryExcept.handlers);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2279 compiler_use_next_block(c, except);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2280 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2281 excepthandler_ty handler = asdl_seq_GET(
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2282 s->v.TryExcept.handlers, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2283 if (!handler->type && i < n-1)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2284 return compiler_error(c, "default 'except:' must be last");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2285 except = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2286 if (except == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2287 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2288 if (handler->type) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2289 ADDOP(c, DUP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2290 VISIT(c, expr, handler->type);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2291 ADDOP_I(c, COMPARE_OP, PyCmp_EXC_MATCH);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2292 ADDOP_JREL(c, JUMP_IF_FALSE, except);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2293 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2294 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2295 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2296 if (handler->name) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2297 VISIT(c, expr, handler->name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2298 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2299 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2300 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2301 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2302 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2303 VISIT_SEQ(c, stmt, handler->body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2304 ADDOP_JREL(c, JUMP_FORWARD, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2305 compiler_use_next_block(c, except);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2306 if (handler->type)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2307 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2308 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2309 ADDOP(c, END_FINALLY);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2310 compiler_use_next_block(c, orelse);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2311 VISIT_SEQ(c, stmt, s->v.TryExcept.orelse);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2312 compiler_use_next_block(c, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2313 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2314 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2315
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2316 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2317 compiler_import_as(struct compiler *c, identifier name, identifier asname)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2318 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2319 /* The IMPORT_NAME opcode was already generated. This function
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2320 merely needs to bind the result to a name.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2321
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2322 If there is a dot in name, we need to split it and emit a
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2323 LOAD_ATTR for each name.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2324 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2325 const char *src = PyString_AS_STRING(name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2326 const char *dot = strchr(src, '.');
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2327 if (dot) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2328 /* Consume the base module name to get the first attribute */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2329 src = dot + 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2330 while (dot) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2331 /* NB src is only defined when dot != NULL */
35759 d91ed7107fd2 ANSI-C-ify the placement of local var declarations. Armin Rigo <arigo@tunes.org> parents: 35742 diff changeset	2332 PyObject *attr;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2333 dot = strchr(src, '.');
35759 d91ed7107fd2 ANSI-C-ify the placement of local var declarations. Armin Rigo <arigo@tunes.org> parents: 35742 diff changeset	2334 attr = PyString_FromStringAndSize(src,
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2335 dot ? dot - src : strlen(src));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2336 ADDOP_O(c, LOAD_ATTR, attr, names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2337 src = dot + 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2338 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2339 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2340 return compiler_nameop(c, asname, Store);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2341 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2342
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2343 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2344 compiler_import(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2345 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2346 /* The Import node stores a module name like a.b.c as a single
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2347 string. This is convenient for all cases except
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2348 import a.b.c as d
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2349 where we need to parse that string to extract the individual
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2350 module names.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2351 XXX Perhaps change the representation to make this case simpler?
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2352 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2353 int i, n = asdl_seq_LEN(s->v.Import.names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2354 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2355 alias_ty alias = asdl_seq_GET(s->v.Import.names, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2356 int r;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2357
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2358 ADDOP_O(c, LOAD_CONST, Py_None, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2359 ADDOP_NAME(c, IMPORT_NAME, alias->name, names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2360
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2361 if (alias->asname) {
35772 f64fb284ed15 Don't stop generating code for import statements after the first "import as" Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35767 diff changeset	2362 r = compiler_import_as(c, alias->name, alias->asname);
f64fb284ed15 Don't stop generating code for import statements after the first "import as" Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35767 diff changeset	2363 if (!r)
f64fb284ed15 Don't stop generating code for import statements after the first "import as" Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35767 diff changeset	2364 return r;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2365 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2366 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2367 identifier tmp = alias->name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2368 const char *base = PyString_AS_STRING(alias->name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2369 char *dot = strchr(base, '.');
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2370 if (dot)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2371 tmp = PyString_FromStringAndSize(base,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2372 dot - base);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2373 r = compiler_nameop(c, tmp, Store);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2374 if (dot) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2375 Py_DECREF(tmp);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2376 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2377 if (!r)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2378 return r;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2379 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2380 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2381 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2382 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2383
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2384 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2385 compiler_from_import(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2386 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2387 int i, n = asdl_seq_LEN(s->v.ImportFrom.names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2388 int star = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2389
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2390 PyObject *names = PyTuple_New(n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2391 if (!names)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2392 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2393
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2394 /* build up the names */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2395 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2396 alias_ty alias = asdl_seq_GET(s->v.ImportFrom.names, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2397 Py_INCREF(alias->name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2398 PyTuple_SET_ITEM(names, i, alias->name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2399 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2400
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2401 if (s->lineno > c->c_future->ff_lineno) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2402 if (!strcmp(PyString_AS_STRING(s->v.ImportFrom.module),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2403 "__future__")) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2404 Py_DECREF(names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2405 return compiler_error(c,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2406 "from __future__ imports must occur "
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2407 "at the beginning of the file");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2408
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2409 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2410 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2411
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2412 ADDOP_O(c, LOAD_CONST, names, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2413 ADDOP_NAME(c, IMPORT_NAME, s->v.ImportFrom.module, names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2414 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2415 alias_ty alias = asdl_seq_GET(s->v.ImportFrom.names, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2416 identifier store_name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2417
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2418 if (i == 0 && PyString_AS_STRING(alias->name) == '') {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2419 assert(n == 1);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2420 ADDOP(c, IMPORT_STAR);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2421 star = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2422 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2423 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2424
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2425 ADDOP_NAME(c, IMPORT_FROM, alias->name, names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2426 store_name = alias->name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2427 if (alias->asname)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2428 store_name = alias->asname;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2429
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2430 if (!compiler_nameop(c, store_name, Store)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2431 Py_DECREF(names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2432 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2433 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2434 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2435 if (!star)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2436 /* remove imported module */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2437 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2438 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2439 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2440
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2441 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2442 compiler_assert(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2443 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2444 static PyObject *assertion_error = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2445 basicblock *end;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2446
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2447 if (Py_OptimizeFlag)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2448 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2449 if (assertion_error == NULL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2450 assertion_error = PyString_FromString("AssertionError");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2451 if (assertion_error == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2452 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2453 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2454 VISIT(c, expr, s->v.Assert.test);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2455 end = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2456 if (end == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2457 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2458 ADDOP_JREL(c, JUMP_IF_TRUE, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2459 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2460 ADDOP_O(c, LOAD_GLOBAL, assertion_error, names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2461 if (s->v.Assert.msg) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2462 VISIT(c, expr, s->v.Assert.msg);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2463 ADDOP_I(c, RAISE_VARARGS, 2);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2464 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2465 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2466 ADDOP_I(c, RAISE_VARARGS, 1);
9293 0a67db47e1d0 Changes to support other object types besides strings Guido van Rossum <guido@python.org> parents: 9215 diff changeset	2467 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2468 compiler_use_block(c, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2469 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2470 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2471 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2472
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2473 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2474 compiler_visit_stmt(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2475 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2476 int i, n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2477
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2478 c->u->u_lineno = s->lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2479 c->u->u_lineno_set = false;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2480 switch (s->kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2481 case FunctionDef_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2482 return compiler_function(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2483 case ClassDef_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2484 return compiler_class(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2485 case Return_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2486 if (c->u->u_ste->ste_type != FunctionBlock)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2487 return compiler_error(c, "'return' outside function");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2488 if (s->v.Return.value) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2489 if (c->u->u_ste->ste_generator) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2490 return compiler_error(c,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2491 "'return' with argument inside generator");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2492 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2493 VISIT(c, expr, s->v.Return.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2494 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2495 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2496 ADDOP_O(c, LOAD_CONST, Py_None, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2497 ADDOP(c, RETURN_VALUE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2498 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2499 case Delete_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2500 VISIT_SEQ(c, expr, s->v.Delete.targets)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2501 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2502 case Assign_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2503 n = asdl_seq_LEN(s->v.Assign.targets);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2504 VISIT(c, expr, s->v.Assign.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2505 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2506 if (i < n - 1)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2507 ADDOP(c, DUP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2508 VISIT(c, expr,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2509 (expr_ty)asdl_seq_GET(s->v.Assign.targets, i));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2510 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2511 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2512 case AugAssign_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2513 return compiler_augassign(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2514 case Print_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2515 return compiler_print(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2516 case For_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2517 return compiler_for(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2518 case While_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2519 return compiler_while(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2520 case If_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2521 return compiler_if(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2522 case Raise_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2523 n = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2524 if (s->v.Raise.type) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2525 VISIT(c, expr, s->v.Raise.type);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2526 n++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2527 if (s->v.Raise.inst) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2528 VISIT(c, expr, s->v.Raise.inst);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2529 n++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2530 if (s->v.Raise.tback) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2531 VISIT(c, expr, s->v.Raise.tback);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2532 n++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2533 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2534 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2535 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2536 ADDOP_I(c, RAISE_VARARGS, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2537 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2538 case TryExcept_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2539 return compiler_try_except(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2540 case TryFinally_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2541 return compiler_try_finally(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2542 case Assert_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2543 return compiler_assert(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2544 case Import_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2545 return compiler_import(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2546 case ImportFrom_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2547 return compiler_from_import(c, s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2548 case Exec_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2549 VISIT(c, expr, s->v.Exec.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2550 if (s->v.Exec.globals) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2551 VISIT(c, expr, s->v.Exec.globals);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2552 if (s->v.Exec.locals) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2553 VISIT(c, expr, s->v.Exec.locals);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2554 } else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2555 ADDOP(c, DUP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2556 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2557 } else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2558 ADDOP_O(c, LOAD_CONST, Py_None, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2559 ADDOP(c, DUP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2560 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2561 ADDOP(c, EXEC_STMT);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2562 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2563 case Global_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2564 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2565 case Expr_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2566 VISIT(c, expr, s->v.Expr.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2567 if (c->c_interactive && c->c_nestlevel <= 1) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2568 ADDOP(c, PRINT_EXPR);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2569 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2570 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2571 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2572 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2573 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2574 case Pass_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2575 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2576 case Break_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2577 if (!c->u->u_nfblocks)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2578 return compiler_error(c, "'break' outside loop");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2579 ADDOP(c, BREAK_LOOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2580 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2581 case Continue_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2582 return compiler_continue(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2583 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2584 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2585 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2586
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2587 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2588 unaryop(unaryop_ty op)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2589 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2590 switch (op) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2591 case Invert:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2592 return UNARY_INVERT;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2593 case Not:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2594 return UNARY_NOT;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2595 case UAdd:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2596 return UNARY_POSITIVE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2597 case USub:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2598 return UNARY_NEGATIVE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2599 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2600 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2601 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2602
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2603 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2604 binop(struct compiler *c, operator_ty op)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2605 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2606 switch (op) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2607 case Add:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2608 return BINARY_ADD;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2609 case Sub:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2610 return BINARY_SUBTRACT;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2611 case Mult:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2612 return BINARY_MULTIPLY;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2613 case Div:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2614 if (c->c_flags && c->c_flags->cf_flags & CO_FUTURE_DIVISION)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2615 return BINARY_TRUE_DIVIDE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2616 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2617 return BINARY_DIVIDE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2618 case Mod:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2619 return BINARY_MODULO;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2620 case Pow:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2621 return BINARY_POWER;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2622 case LShift:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2623 return BINARY_LSHIFT;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2624 case RShift:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2625 return BINARY_RSHIFT;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2626 case BitOr:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2627 return BINARY_OR;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2628 case BitXor:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2629 return BINARY_XOR;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2630 case BitAnd:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2631 return BINARY_AND;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2632 case FloorDiv:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2633 return BINARY_FLOOR_DIVIDE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2634 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2635 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2636 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2637
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2638 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2639 cmpop(cmpop_ty op)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2640 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2641 switch (op) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2642 case Eq:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2643 return PyCmp_EQ;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2644 case NotEq:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2645 return PyCmp_NE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2646 case Lt:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2647 return PyCmp_LT;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2648 case LtE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2649 return PyCmp_LE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2650 case Gt:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2651 return PyCmp_GT;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2652 case GtE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2653 return PyCmp_GE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2654 case Is:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2655 return PyCmp_IS;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2656 case IsNot:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2657 return PyCmp_IS_NOT;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2658 case In:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2659 return PyCmp_IN;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2660 case NotIn:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2661 return PyCmp_NOT_IN;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2662 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2663 return PyCmp_BAD;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2664 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2665
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2666 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2667 inplace_binop(struct compiler *c, operator_ty op)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2668 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2669 switch (op) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2670 case Add:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2671 return INPLACE_ADD;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2672 case Sub:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2673 return INPLACE_SUBTRACT;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2674 case Mult:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2675 return INPLACE_MULTIPLY;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2676 case Div:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2677 if (c->c_flags && c->c_flags->cf_flags & CO_FUTURE_DIVISION)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2678 return INPLACE_TRUE_DIVIDE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2679 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2680 return INPLACE_DIVIDE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2681 case Mod:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2682 return INPLACE_MODULO;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2683 case Pow:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2684 return INPLACE_POWER;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2685 case LShift:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2686 return INPLACE_LSHIFT;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2687 case RShift:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2688 return INPLACE_RSHIFT;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2689 case BitOr:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2690 return INPLACE_OR;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2691 case BitXor:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2692 return INPLACE_XOR;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2693 case BitAnd:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2694 return INPLACE_AND;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2695 case FloorDiv:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2696 return INPLACE_FLOOR_DIVIDE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2697 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2698 assert(0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2699 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2700 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2701
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2702 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2703 compiler_nameop(struct compiler *c, identifier name, expr_context_ty ctx)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2704 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2705 int op, scope;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2706 enum { OP_FAST, OP_GLOBAL, OP_DEREF, OP_NAME } optype;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2707
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2708 PyObject *dict = c->u->u_names;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2709 /* XXX AugStore isn't used anywhere! */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2710
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2711 /* First check for assignment to __debug__. Param? */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2712 if ((ctx == Store \|\| ctx == AugStore \|\| ctx == Del)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2713 && !strcmp(PyString_AS_STRING(name), "__debug__")) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2714 return compiler_error(c, "can not assign to __debug__");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2715 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2716
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2717 op = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2718 optype = OP_NAME;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2719 scope = PyST_GetScope(c->u->u_ste, name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2720 switch (scope) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2721 case FREE:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2722 dict = c->u->u_freevars;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2723 optype = OP_DEREF;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2724 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2725 case CELL:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2726 dict = c->u->u_cellvars;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2727 optype = OP_DEREF;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2728 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2729 case LOCAL:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2730 if (c->u->u_ste->ste_type == FunctionBlock)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2731 optype = OP_FAST;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2732 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2733 case GLOBAL_IMPLICIT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2734 if (!c->u->u_ste->ste_unoptimized)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2735 optype = OP_GLOBAL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2736 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2737 case GLOBAL_EXPLICIT:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2738 optype = OP_GLOBAL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2739 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2740 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2741
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2742 /* XXX Leave assert here, but handle __doc__ and the like better */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2743 assert(scope \|\| PyString_AS_STRING(name)[0] == '_');
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2744
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2745 switch (optype) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2746 case OP_DEREF:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2747 switch (ctx) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2748 case Load: op = LOAD_DEREF; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2749 case Store: op = STORE_DEREF; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2750 case AugLoad:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2751 case AugStore:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2752 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2753 case Del:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2754 PyErr_Format(PyExc_SyntaxError,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2755 "can not delete variable '%s' referenced "
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2756 "in nested scope",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2757 PyString_AS_STRING(name));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2758 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2759 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2760 case Param:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2761 assert(0); /* impossible */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2762 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2763 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2764 case OP_FAST:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2765 switch (ctx) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2766 case Load: op = LOAD_FAST; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2767 case Store: op = STORE_FAST; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2768 case Del: op = DELETE_FAST; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2769 case AugLoad:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2770 case AugStore:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2771 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2772 case Param:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2773 assert(0); /* impossible */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2774 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2775 ADDOP_O(c, op, name, varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2776 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2777 case OP_GLOBAL:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2778 switch (ctx) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2779 case Load: op = LOAD_GLOBAL; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2780 case Store: op = STORE_GLOBAL; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2781 case Del: op = DELETE_GLOBAL; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2782 case AugLoad:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2783 case AugStore:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2784 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2785 case Param:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2786 assert(0); /* impossible */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2787 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2788 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2789 case OP_NAME:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2790 switch (ctx) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2791 case Load: op = LOAD_NAME; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2792 case Store: op = STORE_NAME; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2793 case Del: op = DELETE_NAME; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2794 case AugLoad:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2795 case AugStore:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2796 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2797 case Param:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2798 assert(0); /* impossible */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2799 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2800 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2801 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2802
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2803 assert(op);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2804 return compiler_addop_name(c, op, dict, name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2805 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2806
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2807 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2808 compiler_boolop(struct compiler *c, expr_ty e)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2809 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2810 basicblock *end;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2811 int jumpi, i, n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2812 asdl_seq *s;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2813
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2814 assert(e->kind == BoolOp_kind);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2815 if (e->v.BoolOp.op == And)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2816 jumpi = JUMP_IF_FALSE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2817 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2818 jumpi = JUMP_IF_TRUE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2819 end = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2820 if (end < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2821 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2822 s = e->v.BoolOp.values;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2823 n = asdl_seq_LEN(s) - 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2824 for (i = 0; i < n; ++i) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2825 VISIT(c, expr, asdl_seq_GET(s, i));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2826 ADDOP_JREL(c, jumpi, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2827 ADDOP(c, POP_TOP)
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	2828 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2829 VISIT(c, expr, asdl_seq_GET(s, n));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2830 compiler_use_next_block(c, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2831 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2832 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2833
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2834 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2835 compiler_list(struct compiler *c, expr_ty e)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2836 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2837 int n = asdl_seq_LEN(e->v.List.elts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2838 if (e->v.List.ctx == Store) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2839 ADDOP_I(c, UNPACK_SEQUENCE, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2840 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2841 VISIT_SEQ(c, expr, e->v.List.elts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2842 if (e->v.List.ctx == Load) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2843 ADDOP_I(c, BUILD_LIST, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2844 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2845 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2846 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2847
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2848 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2849 compiler_tuple(struct compiler *c, expr_ty e)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2850 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2851 int n = asdl_seq_LEN(e->v.Tuple.elts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2852 if (e->v.Tuple.ctx == Store) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2853 ADDOP_I(c, UNPACK_SEQUENCE, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2854 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2855 VISIT_SEQ(c, expr, e->v.Tuple.elts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2856 if (e->v.Tuple.ctx == Load) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2857 ADDOP_I(c, BUILD_TUPLE, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2858 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2859 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2860 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2861
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2862 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2863 compiler_compare(struct compiler *c, expr_ty e)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2864 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2865 int i, n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2866 basicblock *cleanup = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2867
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2868 /* XXX the logic can be cleaned up for 1 or multiple comparisons */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2869 VISIT(c, expr, e->v.Compare.left);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2870 n = asdl_seq_LEN(e->v.Compare.ops);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2871 assert(n > 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2872 if (n > 1) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2873 cleanup = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2874 if (cleanup == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2875 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2876 VISIT(c, expr, asdl_seq_GET(e->v.Compare.comparators, 0));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2877 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2878 for (i = 1; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2879 ADDOP(c, DUP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2880 ADDOP(c, ROT_THREE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2881 /* XXX We're casting a void* to cmpop_ty in the next stmt. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2882 ADDOP_I(c, COMPARE_OP,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2883 cmpop((cmpop_ty)asdl_seq_GET(e->v.Compare.ops, i - 1)));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2884 ADDOP_JREL(c, JUMP_IF_FALSE, cleanup);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2885 NEXT_BLOCK(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2886 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2887 if (i < (n - 1))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2888 VISIT(c, expr, asdl_seq_GET(e->v.Compare.comparators, i));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2889 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2890 VISIT(c, expr, asdl_seq_GET(e->v.Compare.comparators, n - 1));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2891 ADDOP_I(c, COMPARE_OP,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2892 /* XXX We're casting a void* to cmpop_ty in the next stmt. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2893 cmpop((cmpop_ty)asdl_seq_GET(e->v.Compare.ops, n - 1)));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2894 if (n > 1) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2895 basicblock *end = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2896 if (end == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2897 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2898 ADDOP_JREL(c, JUMP_FORWARD, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2899 compiler_use_next_block(c, cleanup);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2900 ADDOP(c, ROT_TWO);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2901 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2902 compiler_use_next_block(c, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2903 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2904 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2905 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2906
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2907 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2908 compiler_call(struct compiler *c, expr_ty e)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2909 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2910 int n, code = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2911
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2912 VISIT(c, expr, e->v.Call.func);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2913 n = asdl_seq_LEN(e->v.Call.args);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2914 VISIT_SEQ(c, expr, e->v.Call.args);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2915 if (e->v.Call.keywords) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2916 VISIT_SEQ(c, keyword, e->v.Call.keywords);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2917 n \|= asdl_seq_LEN(e->v.Call.keywords) << 8;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2918 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2919 if (e->v.Call.starargs) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2920 VISIT(c, expr, e->v.Call.starargs);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2921 code \|= 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2922 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2923 if (e->v.Call.kwargs) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2924 VISIT(c, expr, e->v.Call.kwargs);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2925 code \|= 2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2926 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2927 switch (code) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2928 case 0:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2929 ADDOP_I(c, CALL_FUNCTION, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2930 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2931 case 1:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2932 ADDOP_I(c, CALL_FUNCTION_VAR, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2933 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2934 case 2:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2935 ADDOP_I(c, CALL_FUNCTION_KW, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2936 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2937 case 3:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2938 ADDOP_I(c, CALL_FUNCTION_VAR_KW, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2939 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2940 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2941 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2942 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2943
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2944 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2945 compiler_listcomp_generator(struct compiler c, PyObject tmpname,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2946 asdl_seq *generators, int gen_index,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2947 expr_ty elt)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2948 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2949 /* generate code for the iterator, then each of the ifs,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2950 and then write to the element */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2951
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2952 comprehension_ty l;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2953 basicblock start, anchor, skip, if_cleanup;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2954 int i, n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2955
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2956 start = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2957 skip = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2958 if_cleanup = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2959 anchor = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2960
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2961 if (start == NULL \|\| skip == NULL \|\| if_cleanup == NULL \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2962 anchor == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2963 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2964
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2965 l = asdl_seq_GET(generators, gen_index);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2966 VISIT(c, expr, l->iter);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2967 ADDOP(c, GET_ITER);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2968 compiler_use_next_block(c, start);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2969 ADDOP_JREL(c, FOR_ITER, anchor);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2970 NEXT_BLOCK(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2971 VISIT(c, expr, l->target);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2972
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2973 /* XXX this needs to be cleaned up...a lot! */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2974 n = asdl_seq_LEN(l->ifs);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2975 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2976 expr_ty e = asdl_seq_GET(l->ifs, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2977 VISIT(c, expr, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2978 ADDOP_JREL(c, JUMP_IF_FALSE, if_cleanup);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2979 NEXT_BLOCK(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2980 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2981 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2982
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2983 if (++gen_index < asdl_seq_LEN(generators))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2984 if (!compiler_listcomp_generator(c, tmpname,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2985 generators, gen_index, elt))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2986 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2987
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2988 /* only append after the last for generator */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2989 if (gen_index >= asdl_seq_LEN(generators)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2990 if (!compiler_nameop(c, tmpname, Load))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2991 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2992 VISIT(c, expr, elt);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2993 ADDOP_I(c, CALL_FUNCTION, 1);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2994 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2995
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2996 compiler_use_next_block(c, skip);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2997 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2998 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	2999 ADDOP_I(c, JUMP_FORWARD, 1);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3000 if (i == 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3001 compiler_use_next_block(c, if_cleanup);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3002 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3003 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3004 ADDOP_JABS(c, JUMP_ABSOLUTE, start);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3005 compiler_use_next_block(c, anchor);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3006 /* delete the append method added to locals */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3007 if (gen_index == 1)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3008 if (!compiler_nameop(c, tmpname, Del))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3009 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3010
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3011 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3012 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3013
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3014 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3015 compiler_listcomp(struct compiler *c, expr_ty e)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3016 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3017 char tmpname[256];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3018 identifier tmp;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3019 int rc = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3020 static identifier append;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3021 asdl_seq *generators = e->v.ListComp.generators;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3022
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3023 assert(e->kind == ListComp_kind);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3024 if (!append) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3025 append = PyString_InternFromString("append");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3026 if (!append)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3027 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3028 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3029 PyOS_snprintf(tmpname, sizeof(tmpname), "_[%d]", ++c->u->u_tmpname);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3030 tmp = PyString_FromString(tmpname);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3031 if (!tmp)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3032 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3033 ADDOP_I(c, BUILD_LIST, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3034 ADDOP(c, DUP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3035 ADDOP_O(c, LOAD_ATTR, append, names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3036 if (compiler_nameop(c, tmp, Store))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3037 rc = compiler_listcomp_generator(c, tmp, generators, 0,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3038 e->v.ListComp.elt);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3039 Py_DECREF(tmp);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3040 return rc;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3041 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3042
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3043 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3044 compiler_genexp_generator(struct compiler *c,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3045 asdl_seq *generators, int gen_index,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3046 expr_ty elt)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3047 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3048 /* generate code for the iterator, then each of the ifs,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3049 and then write to the element */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3050
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3051 comprehension_ty ge;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3052 basicblock start, anchor, skip, if_cleanup, *end;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3053 int i, n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3054
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3055 start = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3056 skip = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3057 if_cleanup = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3058 anchor = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3059 end = compiler_new_block(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3060
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3061 if (start == NULL \|\| skip == NULL \|\| if_cleanup == NULL \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3062 anchor == NULL \|\| end == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3063 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3064
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3065 ge = asdl_seq_GET(generators, gen_index);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3066 ADDOP_JREL(c, SETUP_LOOP, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3067 if (!compiler_push_fblock(c, LOOP, start))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3068 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3069
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3070 if (gen_index == 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3071 /* Receive outermost iter as an implicit argument */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3072 c->u->u_argcount = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3073 ADDOP_I(c, LOAD_FAST, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3074 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3075 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3076 /* Sub-iter - calculate on the fly */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3077 VISIT(c, expr, ge->iter);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3078 ADDOP(c, GET_ITER);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3079 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3080 compiler_use_next_block(c, start);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3081 ADDOP_JREL(c, FOR_ITER, anchor);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3082 NEXT_BLOCK(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3083 VISIT(c, expr, ge->target);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3084
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3085 /* XXX this needs to be cleaned up...a lot! */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3086 n = asdl_seq_LEN(ge->ifs);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3087 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3088 expr_ty e = asdl_seq_GET(ge->ifs, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3089 VISIT(c, expr, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3090 ADDOP_JREL(c, JUMP_IF_FALSE, if_cleanup);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3091 NEXT_BLOCK(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3092 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3093 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3094
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3095 if (++gen_index < asdl_seq_LEN(generators))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3096 if (!compiler_genexp_generator(c, generators, gen_index, elt))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3097 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3098
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3099 /* only append after the last 'for' generator */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3100 if (gen_index >= asdl_seq_LEN(generators)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3101 VISIT(c, expr, elt);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3102 ADDOP(c, YIELD_VALUE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3103 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3104
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3105 compiler_use_next_block(c, skip);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3106 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3107 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3108 ADDOP_I(c, JUMP_FORWARD, 1);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3109 if (i == 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3110 compiler_use_next_block(c, if_cleanup);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3111
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3112 ADDOP(c, POP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3113 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3114 ADDOP_JABS(c, JUMP_ABSOLUTE, start);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3115 compiler_use_next_block(c, anchor);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3116 ADDOP(c, POP_BLOCK);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3117 compiler_pop_fblock(c, LOOP, start);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3118 compiler_use_next_block(c, end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3119
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3120 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3121 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3122
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3123 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3124 compiler_genexp(struct compiler *c, expr_ty e)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3125 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3126 PyObject *name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3127 PyCodeObject *co;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3128 expr_ty outermost_iter = ((comprehension_ty)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3129 (asdl_seq_GET(e->v.GeneratorExp.generators,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3130 0)))->iter;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3131
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3132 name = PyString_FromString("<generator expression>");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3133 if (!name)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3134 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3135
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3136 if (!compiler_enter_scope(c, name, (void *)e, e->lineno))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3137 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3138 compiler_genexp_generator(c, e->v.GeneratorExp.generators, 0,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3139 e->v.GeneratorExp.elt);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3140 co = assemble(c, 1);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3141 if (co == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3142 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3143 compiler_exit_scope(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3144
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3145 compiler_make_closure(c, co, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3146 VISIT(c, expr, outermost_iter);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3147 ADDOP(c, GET_ITER);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3148 ADDOP_I(c, CALL_FUNCTION, 1);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3149 Py_DECREF(name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3150 Py_DECREF(co);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3151
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3152 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3153 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3154
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3155 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3156 compiler_visit_keyword(struct compiler *c, keyword_ty k)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3157 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3158 ADDOP_O(c, LOAD_CONST, k->arg, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3159 VISIT(c, expr, k->value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3160 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3161 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3162
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3163 /* Test whether expression is constant. For constants, report
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3164 whether they are true or false.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3165
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3166 Return values: 1 for true, 0 for false, -1 for non-constant.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3167 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3168
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3169 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3170 expr_constant(expr_ty e)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3171 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3172 switch (e->kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3173 case Num_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3174 return PyObject_IsTrue(e->v.Num.n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3175 case Str_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3176 return PyObject_IsTrue(e->v.Str.s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3177 default:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3178 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3179 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3180 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3181
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3182 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3183 compiler_visit_expr(struct compiler *c, expr_ty e)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3184 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3185 int i, n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3186
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3187 if (e->lineno > c->u->u_lineno) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3188 c->u->u_lineno = e->lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3189 c->u->u_lineno_set = false;
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	3190 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3191 switch (e->kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3192 case BoolOp_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3193 return compiler_boolop(c, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3194 case BinOp_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3195 VISIT(c, expr, e->v.BinOp.left);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3196 VISIT(c, expr, e->v.BinOp.right);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3197 ADDOP(c, binop(c, e->v.BinOp.op));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3198 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3199 case UnaryOp_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3200 VISIT(c, expr, e->v.UnaryOp.operand);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3201 ADDOP(c, unaryop(e->v.UnaryOp.op));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3202 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3203 case Lambda_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3204 return compiler_lambda(c, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3205 case Dict_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3206 /* XXX get rid of arg? */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3207 ADDOP_I(c, BUILD_MAP, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3208 n = asdl_seq_LEN(e->v.Dict.values);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3209 /* We must arrange things just right for STORE_SUBSCR.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3210 It wants the stack to look like (value) (dict) (key) */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3211 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3212 ADDOP(c, DUP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3213 VISIT(c, expr, asdl_seq_GET(e->v.Dict.values, i));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3214 ADDOP(c, ROT_TWO);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3215 VISIT(c, expr, asdl_seq_GET(e->v.Dict.keys, i));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3216 ADDOP(c, STORE_SUBSCR);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3217 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3218 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3219 case ListComp_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3220 return compiler_listcomp(c, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3221 case GeneratorExp_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3222 return compiler_genexp(c, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3223 case Yield_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3224 if (c->u->u_ste->ste_type != FunctionBlock)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3225 return compiler_error(c, "'yield' outside function");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3226 /*
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3227 for (i = 0; i < c->u->u_nfblocks; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3228 if (c->u->u_fblock[i].fb_type == FINALLY_TRY)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3229 return compiler_error(
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3230 c, "'yield' not allowed in a 'try' "
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3231 "block with a 'finally' clause");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3232 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3233 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3234 if (e->v.Yield.value) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3235 VISIT(c, expr, e->v.Yield.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3236 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3237 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3238 ADDOP_O(c, LOAD_CONST, Py_None, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3239 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3240 ADDOP(c, YIELD_VALUE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3241 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3242 case Compare_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3243 return compiler_compare(c, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3244 case Call_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3245 return compiler_call(c, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3246 case Repr_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3247 VISIT(c, expr, e->v.Repr.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3248 ADDOP(c, UNARY_CONVERT);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3249 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3250 case Num_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3251 ADDOP_O(c, LOAD_CONST, e->v.Num.n, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3252 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3253 case Str_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3254 ADDOP_O(c, LOAD_CONST, e->v.Str.s, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3255 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3256 /* The following exprs can be assignment targets. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3257 case Attribute_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3258 if (e->v.Attribute.ctx != AugStore)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3259 VISIT(c, expr, e->v.Attribute.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3260 switch (e->v.Attribute.ctx) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3261 case AugLoad:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3262 ADDOP(c, DUP_TOP);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3263 /* Fall through to load */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3264 case Load:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3265 ADDOP_NAME(c, LOAD_ATTR, e->v.Attribute.attr, names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3266 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3267 case AugStore:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3268 ADDOP(c, ROT_TWO);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3269 /* Fall through to save */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3270 case Store:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3271 ADDOP_NAME(c, STORE_ATTR, e->v.Attribute.attr, names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3272 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3273 case Del:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3274 ADDOP_NAME(c, DELETE_ATTR, e->v.Attribute.attr, names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3275 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3276 case Param:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3277 assert(0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3278 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3279 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3280 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3281 case Subscript_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3282 switch (e->v.Subscript.ctx) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3283 case AugLoad:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3284 VISIT(c, expr, e->v.Subscript.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3285 VISIT_SLICE(c, e->v.Subscript.slice, AugLoad);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3286 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3287 case Load:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3288 VISIT(c, expr, e->v.Subscript.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3289 VISIT_SLICE(c, e->v.Subscript.slice, Load);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3290 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3291 case AugStore:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3292 VISIT_SLICE(c, e->v.Subscript.slice, AugStore);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3293 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3294 case Store:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3295 VISIT(c, expr, e->v.Subscript.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3296 VISIT_SLICE(c, e->v.Subscript.slice, Store);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3297 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3298 case Del:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3299 VISIT(c, expr, e->v.Subscript.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3300 VISIT_SLICE(c, e->v.Subscript.slice, Del);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3301 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3302 case Param:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3303 assert(0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3304 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3305 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3306 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3307 case Name_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3308 return compiler_nameop(c, e->v.Name.id, e->v.Name.ctx);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3309 /* child nodes of List and Tuple will have expr_context set */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3310 case List_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3311 return compiler_list(c, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3312 case Tuple_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3313 return compiler_tuple(c, e);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3314 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3315 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3316 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3317
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3318 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3319 compiler_augassign(struct compiler *c, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3320 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3321 expr_ty e = s->v.AugAssign.target;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3322 expr_ty auge;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3323
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3324 assert(s->kind == AugAssign_kind);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3325
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3326 switch (e->kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3327 case Attribute_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3328 auge = Attribute(e->v.Attribute.value, e->v.Attribute.attr,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3329 AugLoad, e->lineno);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3330 if (auge == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3331 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3332 VISIT(c, expr, auge);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3333 VISIT(c, expr, s->v.AugAssign.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3334 ADDOP(c, inplace_binop(c, s->v.AugAssign.op));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3335 auge->v.Attribute.ctx = AugStore;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3336 VISIT(c, expr, auge);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3337 free(auge);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3338 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3339 case Subscript_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3340 auge = Subscript(e->v.Subscript.value, e->v.Subscript.slice,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3341 AugLoad, e->lineno);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3342 if (auge == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3343 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3344 VISIT(c, expr, auge);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3345 VISIT(c, expr, s->v.AugAssign.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3346 ADDOP(c, inplace_binop(c, s->v.AugAssign.op));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3347 auge->v.Subscript.ctx = AugStore;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3348 VISIT(c, expr, auge);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3349 free(auge);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3350 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3351 case Name_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3352 VISIT(c, expr, s->v.AugAssign.target);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3353 VISIT(c, expr, s->v.AugAssign.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3354 ADDOP(c, inplace_binop(c, s->v.AugAssign.op));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3355 return compiler_nameop(c, e->v.Name.id, Store);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3356 default:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3357 fprintf(stderr,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3358 "invalid node type for augmented assignment\n");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3359 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3360 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3361 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3362 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3363
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3364 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3365 compiler_push_fblock(struct compiler c, enum fblocktype t, basicblock b)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3366 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3367 struct fblockinfo *f;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3368 if (c->u->u_nfblocks >= CO_MAXBLOCKS)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3369 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3370 f = &c->u->u_fblock[c->u->u_nfblocks++];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3371 f->fb_type = t;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3372 f->fb_block = b;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3373 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3374 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3375
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3376 static void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3377 compiler_pop_fblock(struct compiler c, enum fblocktype t, basicblock b)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3378 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3379 struct compiler_unit *u = c->u;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3380 assert(u->u_nfblocks > 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3381 u->u_nfblocks--;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3382 assert(u->u_fblock[u->u_nfblocks].fb_type == t);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3383 assert(u->u_fblock[u->u_nfblocks].fb_block == b);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3384 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3385
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3386 /* Raises a SyntaxError and returns 0.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3387 If something goes wrong, a different exception may be raised.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3388 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3389
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3390 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3391 compiler_error(struct compiler c, const char errstr)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3392 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3393 PyObject *loc;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3394 PyObject u = NULL, v = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3395
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3396 loc = PyErr_ProgramText(c->c_filename, c->u->u_lineno);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3397 if (!loc) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3398 Py_INCREF(Py_None);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3399 loc = Py_None;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3400 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3401 u = Py_BuildValue("(ziOO)", c->c_filename, c->u->u_lineno,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3402 Py_None, loc);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3403 if (!u)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3404 goto exit;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3405 v = Py_BuildValue("(zO)", errstr, u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3406 if (!v)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3407 goto exit;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3408 PyErr_SetObject(PyExc_SyntaxError, v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3409 exit:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3410 Py_DECREF(loc);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3411 Py_XDECREF(u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3412 Py_XDECREF(v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3413 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3414 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3415
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3416 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3417 compiler_handle_subscr(struct compiler c, const char kind,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3418 expr_context_ty ctx)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3419 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3420 int op = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3421
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3422 /* XXX this code is duplicated */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3423 switch (ctx) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3424 case AugLoad: /* fall through to Load */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3425 case Load: op = BINARY_SUBSCR; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3426 case AugStore:/* fall through to Store */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3427 case Store: op = STORE_SUBSCR; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3428 case Del: op = DELETE_SUBSCR; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3429 case Param:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3430 fprintf(stderr,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3431 "invalid %s kind %d in subscript\n",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3432 kind, ctx);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3433 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3434 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3435 if (ctx == AugLoad) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3436 ADDOP_I(c, DUP_TOPX, 2);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3437 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3438 else if (ctx == AugStore) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3439 ADDOP(c, ROT_THREE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3440 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3441 ADDOP(c, op);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3442 return 1;
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	3443 }
cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	3444
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3445 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3446 compiler_slice(struct compiler *c, slice_ty s, expr_context_ty ctx)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3447 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3448 int n = 2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3449 assert(s->kind == Slice_kind);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3450
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3451 /* only handles the cases where BUILD_SLICE is emitted */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3452 if (s->v.Slice.lower) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3453 VISIT(c, expr, s->v.Slice.lower);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3454 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3455 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3456 ADDOP_O(c, LOAD_CONST, Py_None, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3457 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3458
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3459 if (s->v.Slice.upper) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3460 VISIT(c, expr, s->v.Slice.upper);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3461 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3462 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3463 ADDOP_O(c, LOAD_CONST, Py_None, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3464 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3465
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3466 if (s->v.Slice.step) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3467 n++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3468 VISIT(c, expr, s->v.Slice.step);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3469 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3470 ADDOP_I(c, BUILD_SLICE, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3471 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3472 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3473
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3474 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3475 compiler_simple_slice(struct compiler *c, slice_ty s, expr_context_ty ctx)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3476 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3477 int op = 0, slice_offset = 0, stack_count = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3478
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3479 assert(s->v.Slice.step == NULL);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3480 if (s->v.Slice.lower) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3481 slice_offset++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3482 stack_count++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3483 if (ctx != AugStore)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3484 VISIT(c, expr, s->v.Slice.lower);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3485 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3486 if (s->v.Slice.upper) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3487 slice_offset += 2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3488 stack_count++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3489 if (ctx != AugStore)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3490 VISIT(c, expr, s->v.Slice.upper);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3491 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3492
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3493 if (ctx == AugLoad) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3494 switch (stack_count) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3495 case 0: ADDOP(c, DUP_TOP); break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3496 case 1: ADDOP_I(c, DUP_TOPX, 2); break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3497 case 2: ADDOP_I(c, DUP_TOPX, 3); break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3498 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3499 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3500 else if (ctx == AugStore) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3501 switch (stack_count) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3502 case 0: ADDOP(c, ROT_TWO); break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3503 case 1: ADDOP(c, ROT_THREE); break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3504 case 2: ADDOP(c, ROT_FOUR); break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3505 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3506 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3507
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3508 switch (ctx) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3509 case AugLoad: /* fall through to Load */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3510 case Load: op = SLICE; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3511 case AugStore:/* fall through to Store */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3512 case Store: op = STORE_SLICE; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3513 case Del: op = DELETE_SLICE; break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3514 case Param: /* XXX impossible? */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3515 fprintf(stderr, "param invalid\n");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3516 assert(0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3517 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3518
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3519 ADDOP(c, op + slice_offset);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3520 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3521 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3522
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3523 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3524 compiler_visit_nested_slice(struct compiler *c, slice_ty s,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3525 expr_context_ty ctx)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3526 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3527 switch (s->kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3528 case Ellipsis_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3529 ADDOP_O(c, LOAD_CONST, Py_Ellipsis, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3530 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3531 case Slice_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3532 return compiler_slice(c, s, ctx);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3533 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3534 case Index_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3535 VISIT(c, expr, s->v.Index.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3536 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3537 case ExtSlice_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3538 assert(0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3539 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3540 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3541 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3542 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3543
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3544
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3545 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3546 compiler_visit_slice(struct compiler *c, slice_ty s, expr_context_ty ctx)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3547 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3548 switch (s->kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3549 case Ellipsis_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3550 ADDOP_O(c, LOAD_CONST, Py_Ellipsis, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3551 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3552 case Slice_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3553 if (!s->v.Slice.step)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3554 return compiler_simple_slice(c, s, ctx);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3555 if (!compiler_slice(c, s, ctx))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3556 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3557 if (ctx == AugLoad) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3558 ADDOP_I(c, DUP_TOPX, 2);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3559 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3560 else if (ctx == AugStore) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3561 ADDOP(c, ROT_THREE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3562 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3563 return compiler_handle_subscr(c, "slice", ctx);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3564 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3565 case ExtSlice_kind: {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3566 int i, n = asdl_seq_LEN(s->v.ExtSlice.dims);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3567 for (i = 0; i < n; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3568 slice_ty sub = asdl_seq_GET(s->v.ExtSlice.dims, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3569 if (!compiler_visit_nested_slice(c, sub, ctx))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3570 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3571 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3572 ADDOP_I(c, BUILD_TUPLE, n);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3573 return compiler_handle_subscr(c, "extended slice", ctx);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3574 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3575 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3576 case Index_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3577 if (ctx != AugStore)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3578 VISIT(c, expr, s->v.Index.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3579 return compiler_handle_subscr(c, "index", ctx);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3580 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3581 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3582 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3583
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3584 /* do depth-first search of basic block graph, starting with block.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3585 post records the block indices in post-order.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3586
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3587 XXX must handle implicit jumps from one block to next
16015 c832ef72499d This patch introduces an extra pass to the compiler that generates a Jeremy Hylton <jeremy@alum.mit.edu> parents: 16006 diff changeset	3588 */
c832ef72499d This patch introduces an extra pass to the compiler that generates a Jeremy Hylton <jeremy@alum.mit.edu> parents: 16006 diff changeset	3589
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3590 static void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3591 dfs(struct compiler c, basicblock b, struct assembler *a)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3592 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3593 int i;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3594 struct instr *instr = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3595
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3596 if (b->b_seen)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3597 return;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3598 b->b_seen = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3599 if (b->b_next != NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3600 dfs(c, b->b_next, a);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3601 for (i = 0; i < b->b_iused; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3602 instr = &b->b_instr[i];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3603 if (instr->i_jrel \|\| instr->i_jabs)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3604 dfs(c, instr->i_target, a);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3605 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3606 a->a_postorder[a->a_nblocks++] = b;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3607 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3608
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3609 int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3610 stackdepth_walk(struct compiler c, basicblock b, int depth, int maxdepth)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3611 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3612 int i;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3613 struct instr *instr;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3614 if (b->b_seen \|\| b->b_startdepth >= depth)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3615 return maxdepth;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3616 b->b_seen = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3617 b->b_startdepth = depth;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3618 for (i = 0; i < b->b_iused; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3619 instr = &b->b_instr[i];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3620 depth += opcode_stack_effect(instr->i_opcode, instr->i_oparg);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3621 if (depth > maxdepth)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3622 maxdepth = depth;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3623 assert(depth >= 0); /* invalid code or bug in stackdepth() */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3624 if (instr->i_jrel \|\| instr->i_jabs) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3625 maxdepth = stackdepth_walk(c, instr->i_target,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3626 depth, maxdepth);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3627 if (instr->i_opcode == JUMP_ABSOLUTE \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3628 instr->i_opcode == JUMP_FORWARD) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3629 goto out; /* remaining code is dead */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3630 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3631 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3632 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3633 if (b->b_next)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3634 maxdepth = stackdepth_walk(c, b->b_next, depth, maxdepth);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3635 out:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3636 b->b_seen = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3637 return maxdepth;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3638 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3639
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3640 /* Find the flow path that needs the largest stack. We assume that
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3641 * cycles in the flow graph have no net effect on the stack depth.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3642 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3643 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3644 stackdepth(struct compiler *c)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3645 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3646 basicblock b, entryblock;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3647 entryblock = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3648 for (b = c->u->u_blocks; b != NULL; b = b->b_list) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3649 b->b_seen = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3650 b->b_startdepth = INT_MIN;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3651 entryblock = b;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3652 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3653 return stackdepth_walk(c, entryblock, 0, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3654 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3655
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3656 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3657 assemble_init(struct assembler *a, int nblocks, int firstlineno)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3658 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3659 memset(a, 0, sizeof(struct assembler));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3660 a->a_lineno = firstlineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3661 a->a_bytecode = PyString_FromStringAndSize(NULL, DEFAULT_CODE_SIZE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3662 if (!a->a_bytecode)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3663 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3664 a->a_lnotab = PyString_FromStringAndSize(NULL, DEFAULT_LNOTAB_SIZE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3665 if (!a->a_lnotab)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3666 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3667 a->a_postorder = (basicblock **)PyObject_Malloc(
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3668 sizeof(basicblock ) nblocks);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3669 if (!a->a_postorder)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3670 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3671 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3672 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3673
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3674 static void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3675 assemble_free(struct assembler *a)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3676 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3677 Py_XDECREF(a->a_bytecode);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3678 Py_XDECREF(a->a_lnotab);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3679 if (a->a_postorder)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3680 PyObject_Free(a->a_postorder);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3681 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3682
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3683 /* Return the size of a basic block in bytes. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3684
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3685 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3686 instrsize(struct instr *instr)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3687 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3688 int size = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3689 if (instr->i_hasarg) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3690 size += 2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3691 if (instr->i_oparg >> 16)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3692 size += 2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3693 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3694 return size;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3695 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3696
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3697 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3698 blocksize(basicblock *b)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3699 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3700 int i;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3701 int size = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3702
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3703 for (i = 0; i < b->b_iused; i++)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3704 size += instrsize(&b->b_instr[i]);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3705 return size;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3706 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3707
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3708 /* All about a_lnotab.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3709
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3710 c_lnotab is an array of unsigned bytes disguised as a Python string.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3711 It is used to map bytecode offsets to source code line #s (when needed
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3712 for tracebacks).
24844 cf5928fab108 This is my patch Michael W. Hudson <mwh@python.net> parents: 24818 diff changeset	3713
18065 889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3714 The array is conceptually a list of
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3715 (bytecode offset increment, line number increment)
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3716 pairs. The details are important and delicate, best illustrated by example:
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3717
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3718 byte code offset source code line number
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3719 0 1
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3720 6 2
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3721 50 7
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3722 350 307
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3723 361 308
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3724
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3725 The first trick is that these numbers aren't stored, only the increments
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3726 from one row to the next (this doesn't really work, but it's a start):
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3727
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3728 0, 1, 6, 1, 44, 5, 300, 300, 11, 1
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3729
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3730 The second trick is that an unsigned byte can't hold negative values, or
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3731 values larger than 255, so (a) there's a deep assumption that byte code
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3732 offsets and their corresponding line #s both increase monotonically, and (b)
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3733 if at least one column jumps by more than 255 from one row to the next, more
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3734 than one pair is written to the table. In case #b, there's no way to know
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3735 from looking at the table later how many were written. That's the delicate
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3736 part. A user of c_lnotab desiring to find the source line number
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3737 corresponding to a bytecode address A should do something like this
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3738
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3739 lineno = addr = 0
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3740 for addr_incr, line_incr in c_lnotab:
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3741 addr += addr_incr
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3742 if addr > A:
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3743 return lineno
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3744 lineno += line_incr
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3745
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3746 In order for this to work, when the addr field increments by more than 255,
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3747 the line # increment in each pair generated must be 0 until the remaining addr
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3748 increment is < 256. So, in the example above, com_set_lineno should not (as
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3749 was actually done until 2.2) expand 300, 300 to 255, 255, 45, 45, but to
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3750 255, 0, 45, 255, 0, 45.
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3751 */
889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3752
17518 f939ce52a734 Make some private symbols static. Guido van Rossum <guido@python.org> parents: 17355 diff changeset	3753 static int
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3754 assemble_lnotab(struct assembler a, struct instr i)
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	3755 {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3756 int d_bytecode, d_lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3757 int len;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3758 char *lnotab;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3759
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3760 d_bytecode = a->a_offset - a->a_lineno_off;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3761 d_lineno = i->i_lineno - a->a_lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3762
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3763 assert(d_bytecode >= 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3764 assert(d_lineno >= 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3765
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3766 if (d_lineno == 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3767 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3768
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3769 if (d_bytecode > 255) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3770 int i, nbytes, ncodes = d_bytecode / 255;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3771 nbytes = a->a_lnotab_off + 2 * ncodes;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3772 len = PyString_GET_SIZE(a->a_lnotab);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3773 if (nbytes >= len) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3774 if (len * 2 < nbytes)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3775 len = nbytes;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3776 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3777 len *= 2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3778 if (_PyString_Resize(&a->a_lnotab, len) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3779 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3780 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3781 lnotab = PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3782 for (i = 0; i < ncodes; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3783 *lnotab++ = 255;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3784 *lnotab++ = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3785 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3786 d_bytecode -= ncodes * 255;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3787 a->a_lnotab_off += ncodes * 2;
5041 c497929b2371 Instead of emitting SET_LINENO instructions, generate a line number Guido van Rossum <guido@python.org> parents: 5011 diff changeset	3788 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3789 assert(d_bytecode <= 255);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3790 if (d_lineno > 255) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3791 int i, nbytes, ncodes = d_lineno / 255;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3792 nbytes = a->a_lnotab_off + 2 * ncodes;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3793 len = PyString_GET_SIZE(a->a_lnotab);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3794 if (nbytes >= len) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3795 if (len * 2 < nbytes)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3796 len = nbytes;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3797 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3798 len *= 2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3799 if (_PyString_Resize(&a->a_lnotab, len) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3800 return 0;
18065 889db6d55506 SF bug 430991: wrong co_lnotab Tim Peters <tim.peters@gmail.com> parents: 17736 diff changeset	3801 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3802 lnotab = PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3803 *lnotab++ = 255;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3804 *lnotab++ = d_bytecode;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3805 d_bytecode = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3806 for (i = 1; i < ncodes; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3807 *lnotab++ = 255;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3808 *lnotab++ = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3809 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3810 d_lineno -= ncodes * 255;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3811 a->a_lnotab_off += ncodes * 2;
14147 21ec69a56228 Charles G. Waldman <cgw@fnal.gov>: Fred Drake <fdrake@acm.org> parents: 14117 diff changeset	3812 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3813
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3814 len = PyString_GET_SIZE(a->a_lnotab);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3815 if (a->a_lnotab_off + 2 >= len) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3816 if (_PyString_Resize(&a->a_lnotab, len * 2) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3817 return 0;
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	3818 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3819 lnotab = PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3820
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3821 a->a_lnotab_off += 2;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3822 if (d_bytecode) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3823 *lnotab++ = d_bytecode;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3824 *lnotab++ = d_lineno;
73 3028acaa56b0 Compile class definitions. Guido van Rossum <guido@python.org> parents: 69 diff changeset	3825 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3826 else { /* First line of a block; def stmt, etc. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3827 *lnotab++ = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3828 *lnotab++ = d_lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3829 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3830 a->a_lineno = i->i_lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3831 a->a_lineno_off = a->a_offset;
4129 eedaa59341b9 Name mangling, what the heck! Guido van Rossum <guido@python.org> parents: 4003 diff changeset	3832 return 1;
eedaa59341b9 Name mangling, what the heck! Guido van Rossum <guido@python.org> parents: 4003 diff changeset	3833 }
16015 c832ef72499d This patch introduces an extra pass to the compiler that generates a Jeremy Hylton <jeremy@alum.mit.edu> parents: 16006 diff changeset	3834
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3835 /* assemble_emit()
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3836 Extend the bytecode with a new instruction.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3837 Update lnotab if necessary.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3838 */
16257 fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3839
24855 bed5d5e536bc Add warnings for assignment or deletion of variables and attributes Guido van Rossum <guido@python.org> parents: 24854 diff changeset	3840 static int
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3841 assemble_emit(struct assembler a, struct instr i)
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	3842 {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3843 int arg = 0, size = 0, ext = i->i_oparg >> 16;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3844 int len = PyString_GET_SIZE(a->a_bytecode);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3845 char *code;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3846
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3847 if (!i->i_hasarg)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3848 size = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3849 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3850 if (ext)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3851 size = 6;
11974 28003afa1a2f Marc-Andre Lemburg: support for Unicode string literals (u"...", ur"..."). Guido van Rossum <guido@python.org> parents: 11598 diff changeset	3852 else
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3853 size = 3;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3854 arg = i->i_oparg;
32121 302d399cfd37 SF patch #872326: Generator expression implementation Raymond Hettinger <python@rcn.com> parents: 31764 diff changeset	3855 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3856 if (i->i_lineno && !assemble_lnotab(a, i))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3857 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3858 if (a->a_offset + size >= len) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3859 if (_PyString_Resize(&a->a_bytecode, len * 2) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3860 return 0;
2813 999b5bdc18ce 3rd arg for raise; INCOMPLETE keyword parameter passing (currently f(kw=value) is seen as f('kw', value)) Guido van Rossum <guido@python.org> parents: 2367 diff changeset	3861 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3862 code = PyString_AS_STRING(a->a_bytecode) + a->a_offset;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3863 a->a_offset += size;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3864 if (ext > 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3865 *code++ = (char)EXTENDED_ARG;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3866 *code++ = ext & 0xff;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3867 *code++ = ext >> 8;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3868 arg &= 0xffff;
4991 8276916e1ea8 Add co_stacksize field to codeobject structure, and stacksize argument Guido van Rossum <guido@python.org> parents: 4905 diff changeset	3869 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3870 *code++ = i->i_opcode;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3871 if (size == 1)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3872 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3873 *code++ = arg & 0xff;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3874 *code++ = arg >> 8;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3875 return 1;
19187 30f8b654c2e5 SF Patch [ 429024 ] deal with some unary ops at compile time Jeremy Hylton <jeremy@alum.mit.edu> parents: 19177 diff changeset	3876 }
30f8b654c2e5 SF Patch [ 429024 ] deal with some unary ops at compile time Jeremy Hylton <jeremy@alum.mit.edu> parents: 19177 diff changeset	3877
19793 e2e9f1722c4f SF bug [#458941] Looks like a unary minus bug. Tim Peters <tim.peters@gmail.com> parents: 19613 diff changeset	3878 static int
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3879 assemble_jump_offsets(struct assembler a, struct compiler c)
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	3880 {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3881 basicblock *b;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3882 int bsize, totsize = 0;
5233 b749d2dd7582 Added assert statement. Guido van Rossum <guido@python.org> parents: 5197 diff changeset	3883 int i;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3884
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3885 /* Compute the size of each block and fixup jump args.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3886 Replace block pointer with position in bytecode. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3887 for (i = a->a_nblocks - 1; i >= 0; i--) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3888 basicblock *b = a->a_postorder[i];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3889 bsize = blocksize(b);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3890 b->b_offset = totsize;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3891 totsize += bsize;
86 a6934380c6e7 "Compiling" version Guido van Rossum <guido@python.org> parents: 73 diff changeset	3892 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3893 for (b = c->u->u_blocks; b != NULL; b = b->b_list) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3894 bsize = b->b_offset;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3895 for (i = 0; i < b->b_iused; i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3896 struct instr *instr = &b->b_instr[i];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3897 /* Relative jumps are computed relative to
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3898 the instruction pointer after fetching
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3899 the jump instruction.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3900 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3901 bsize += instrsize(instr);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3902 if (instr->i_jabs)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3903 instr->i_oparg = instr->i_target->b_offset;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3904 else if (instr->i_jrel) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3905 int delta = instr->i_target->b_offset - bsize;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3906 instr->i_oparg = delta;
18333 41243cb4ea05 Another "if 0:" hack, this time to complain about otherwise invisible Tim Peters <tim.peters@gmail.com> parents: 18274 diff changeset	3907 }
41243cb4ea05 Another "if 0:" hack, this time to complain about otherwise invisible Tim Peters <tim.peters@gmail.com> parents: 18274 diff changeset	3908 }
41243cb4ea05 Another "if 0:" hack, this time to complain about otherwise invisible Tim Peters <tim.peters@gmail.com> parents: 18274 diff changeset	3909 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3910 return 1;
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	3911 }
cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	3912
16257 fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3913 static PyObject *
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3914 dict_keys_inorder(PyObject *dict, int offset)
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3915 {
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3916 PyObject tuple, k, *v;
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3917 int i, pos = 0, size = PyDict_Size(dict);
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3918
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3919 tuple = PyTuple_New(size);
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3920 if (tuple == NULL)
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3921 return NULL;
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3922 while (PyDict_Next(dict, &pos, &k, &v)) {
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3923 i = PyInt_AS_LONG(v);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3924 k = PyTuple_GET_ITEM(k, 0);
16257 fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3925 Py_INCREF(k);
17078 7e181eba6b9b Fixup handling of free variables in methods when the class scope also Jeremy Hylton <jeremy@alum.mit.edu> parents: 17076 diff changeset	3926 assert((i - offset) < size);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3927 assert((i - offset) >= 0);
16257 fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3928 PyTuple_SET_ITEM(tuple, i - offset, k);
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3929 }
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3930 return tuple;
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3931 }
fd8c7203251f PEP 227 implementation Jeremy Hylton <jeremy@alum.mit.edu> parents: 16250 diff changeset	3932
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3933 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3934 compute_code_flags(struct compiler *c)
16421 aa844711463a Move a bunch of definitions that were internal to compile.c to Jeremy Hylton <jeremy@alum.mit.edu> parents: 16408 diff changeset	3935 {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3936 PySTEntryObject *ste = c->u->u_ste;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3937 int flags = 0, n;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3938 if (ste->ste_type != ModuleBlock)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3939 flags \|= CO_NEWLOCALS;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3940 if (ste->ste_type == FunctionBlock) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3941 if (!ste->ste_unoptimized)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3942 flags \|= CO_OPTIMIZED;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3943 if (ste->ste_nested)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3944 flags \|= CO_NESTED;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3945 if (ste->ste_generator)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3946 flags \|= CO_GENERATOR;
20867 40a88989d6cb Part of SF bug #478003 possible memory leaks in err handling. Tim Peters <tim.peters@gmail.com> parents: 20517 diff changeset	3947 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3948 if (ste->ste_varargs)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3949 flags \|= CO_VARARGS;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3950 if (ste->ste_varkeywords)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3951 flags \|= CO_VARKEYWORDS;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3952 if (ste->ste_generator)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3953 flags \|= CO_GENERATOR;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3954 if (c->c_flags->cf_flags & CO_FUTURE_DIVISION)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3955 flags \|= CO_FUTURE_DIVISION;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3956 n = PyDict_Size(c->u->u_freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3957 if (n < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3958 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3959 if (n == 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3960 n = PyDict_Size(c->u->u_cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3961 if (n < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3962 return -1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3963 if (n == 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3964 flags \|= CO_NOFREE;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3965 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3966 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3967
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3968 return flags;
4129 eedaa59341b9 Name mangling, what the heck! Guido van Rossum <guido@python.org> parents: 4003 diff changeset	3969 }
eedaa59341b9 Name mangling, what the heck! Guido van Rossum <guido@python.org> parents: 4003 diff changeset	3970
5373 5880384d7c71 Quickly renamed the remaining files -- this directory is done. Guido van Rossum <guido@python.org> parents: 5287 diff changeset	3971 static PyCodeObject *
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3972 makecode(struct compiler c, struct assembler a)
4129 eedaa59341b9 Name mangling, what the heck! Guido van Rossum <guido@python.org> parents: 4003 diff changeset	3973 {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3974 PyObject *tmp;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3975 PyCodeObject *co = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3976 PyObject *consts = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3977 PyObject *names = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3978 PyObject *varnames = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3979 PyObject *filename = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3980 PyObject *name = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3981 PyObject *freevars = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3982 PyObject *cellvars = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3983 PyObject *bytecode = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3984 int nlocals, flags;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3985
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3986 tmp = dict_keys_inorder(c->u->u_consts, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3987 if (!tmp)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3988 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3989 consts = PySequence_List(tmp); /* optimize_code requires a list */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3990 Py_DECREF(tmp);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3991
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3992 names = dict_keys_inorder(c->u->u_names, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3993 varnames = dict_keys_inorder(c->u->u_varnames, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3994 if (!consts \|\| !names \|\| !varnames)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3995 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3996
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3997 cellvars = dict_keys_inorder(c->u->u_cellvars, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3998 if (!cellvars)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	3999 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4000 freevars = dict_keys_inorder(c->u->u_freevars, PyTuple_Size(cellvars));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4001 if (!freevars)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4002 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4003 filename = PyString_FromString(c->c_filename);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4004 if (!filename)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4005 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4006
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4007 nlocals = PyDict_Size(c->u->u_varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4008 flags = compute_code_flags(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4009 if (flags < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4010 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4011
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4012 bytecode = optimize_code(a->a_bytecode, consts, names, a->a_lnotab);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4013 if (!bytecode)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4014 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4015
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4016 tmp = PyList_AsTuple(consts); /* PyCode_New requires a tuple */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4017 if (!tmp)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4018 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4019 Py_DECREF(consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4020 consts = tmp;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4021
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4022 co = PyCode_New(c->u->u_argcount, nlocals, stackdepth(c), flags,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4023 bytecode, consts, names, varnames,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4024 freevars, cellvars,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4025 filename, c->u->u_name,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4026 c->u->u_firstlineno,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4027 a->a_lnotab);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4028 error:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4029 Py_XDECREF(consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4030 Py_XDECREF(names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4031 Py_XDECREF(varnames);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4032 Py_XDECREF(filename);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4033 Py_XDECREF(name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4034 Py_XDECREF(freevars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4035 Py_XDECREF(cellvars);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4036 Py_XDECREF(bytecode);
69 cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	4037 return co;
cccd534f2280 Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	4038 }
5041 c497929b2371 Instead of emitting SET_LINENO instructions, generate a line number Guido van Rossum <guido@python.org> parents: 5011 diff changeset	4039
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4040 static PyCodeObject *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4041 assemble(struct compiler *c, int addNone)
16781 5a1230de436a Preliminary support for future nested scopes Jeremy Hylton <jeremy@alum.mit.edu> parents: 16763 diff changeset	4042 {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4043 basicblock b, entryblock;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4044 struct assembler a;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4045 int i, j, nblocks;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4046 PyCodeObject *co = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4047
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4048 /* Make sure every block that falls off the end returns None.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4049 XXX NEXT_BLOCK() isn't quite right, because if the last
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4050 block ends with a jump or return b_next shouldn't set.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4051 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4052 if (!c->u->u_curblock->b_return) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4053 NEXT_BLOCK(c);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4054 if (addNone)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4055 ADDOP_O(c, LOAD_CONST, Py_None, consts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4056 ADDOP(c, RETURN_VALUE);
16015 c832ef72499d This patch introduces an extra pass to the compiler that generates a Jeremy Hylton <jeremy@alum.mit.edu> parents: 16006 diff changeset	4057 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4058
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4059 nblocks = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4060 entryblock = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4061 for (b = c->u->u_blocks; b != NULL; b = b->b_list) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4062 nblocks++;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4063 entryblock = b;
16015 c832ef72499d This patch introduces an extra pass to the compiler that generates a Jeremy Hylton <jeremy@alum.mit.edu> parents: 16006 diff changeset	4064 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4065
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4066 if (!assemble_init(&a, nblocks, c->u->u_firstlineno))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4067 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4068 dfs(c, entryblock, &a);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4069
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4070 /* Can't modify the bytecode after computing jump offsets. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4071 if (!assemble_jump_offsets(&a, c))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4072 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4073
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4074 /* Emit code in reverse postorder from dfs. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4075 for (i = a.a_nblocks - 1; i >= 0; i--) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4076 basicblock *b = a.a_postorder[i];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4077 for (j = 0; j < b->b_iused; j++)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4078 if (!assemble_emit(&a, &b->b_instr[j]))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4079 goto error;
16394 f700e6b8de1f Undo recent change that banned using import to bind a global, as per Jeremy Hylton <jeremy@alum.mit.edu> parents: 16357 diff changeset	4080 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4081
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4082 if (_PyString_Resize(&a.a_lnotab, a.a_lnotab_off) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4083 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4084 if (_PyString_Resize(&a.a_bytecode, a.a_offset) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4085 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4086
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4087 co = makecode(c, &a);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4088 error:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4089 assemble_free(&a);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 35310 diff changeset	4090 return co;
16015 c832ef72499d This patch introduces an extra pass to the compiler that generates a Jeremy Hylton <jeremy@alum.mit.edu> parents: 16006 diff changeset	4091 }

Mercurial > cpython-lru_cache-weakref

annotate Python/compile.c @ 35772:f64fb284ed15 legacy-trunk