Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 42309:bd6acfdb47d2
Merged revisions 56301-56442 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/p3yk
................
r56322 | kurt.kaiser | 2007-07-12 11:35:03 -0700 (Thu, 12 Jul 2007) | 2 lines
Replace obscure code which was failing in py3k.
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r56323 | kurt.kaiser | 2007-07-12 11:44:12 -0700 (Thu, 12 Jul 2007) | 3 lines
1. Remove new division option
2. Update IDLE version to 3.0x
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r56327 | kurt.kaiser | 2007-07-12 12:20:20 -0700 (Thu, 12 Jul 2007) | 5 lines
Fix another instance of this defect in Tkinter, and one in IDLE.
Patch 1724999 by Ali Gholami Rudi -- avoid complaints about dict size
change during iter in destroy call.
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r56339 | georg.brandl | 2007-07-13 03:07:25 -0700 (Fri, 13 Jul 2007) | 2 lines
Fix #1753310: regrtest -x doesn't work anymore
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r56361 | kurt.kaiser | 2007-07-13 18:25:24 -0700 (Fri, 13 Jul 2007) | 2 lines
convert a map() iterator to a list to get this working.
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r56362 | kurt.kaiser | 2007-07-13 18:53:45 -0700 (Fri, 13 Jul 2007) | 2 lines
Was modifying dict during iteration.
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r56376 | collin.winter | 2007-07-14 11:56:19 -0700 (Sat, 14 Jul 2007) | 1 line
Add an example of class decorators to test_grammar.
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r56377 | collin.winter | 2007-07-14 12:00:17 -0700 (Sat, 14 Jul 2007) | 1 line
Add a basic example of dictcomps to test_grammar.
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r56413 | neal.norwitz | 2007-07-17 00:21:18 -0700 (Tue, 17 Jul 2007) | 149 lines
Merged revisions 56202-56412 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r56204 | ronald.oussoren | 2007-07-08 23:02:21 -0700 (Sun, 08 Jul 2007) | 2 lines
Patch 1693258: Fix for duplicate "preferences" menu-OS X
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r56207 | ronald.oussoren | 2007-07-09 01:41:15 -0700 (Mon, 09 Jul 2007) | 4 lines
Patch 1673122: be explicit about which libtool to use, to avoid name clashes
when a users install GNU libtool early in his PATH
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r56280 | georg.brandl | 2007-07-11 12:41:49 -0700 (Wed, 11 Jul 2007) | 2 lines
Fix #1752132: wrong comment in opcode description.
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r56293 | georg.brandl | 2007-07-12 01:05:45 -0700 (Thu, 12 Jul 2007) | 3 lines
Patch #1752270, #1750931: complain if urllib2 add_handler called
without handler.
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r56296 | georg.brandl | 2007-07-12 01:11:29 -0700 (Thu, 12 Jul 2007) | 2 lines
Patch #1739696: use code.co_code only if really necessary
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r56298 | georg.brandl | 2007-07-12 01:38:00 -0700 (Thu, 12 Jul 2007) | 3 lines
Patch #1673759: add a missing overflow check when formatting floats
with %G.
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r56302 | georg.brandl | 2007-07-12 02:06:41 -0700 (Thu, 12 Jul 2007) | 2 lines
Patch #1731659: improve time.strptime docs.
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r56304 | georg.brandl | 2007-07-12 02:24:04 -0700 (Thu, 12 Jul 2007) | 2 lines
Patch #1731169: clean up expected skips list.
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r56306 | georg.brandl | 2007-07-12 02:37:49 -0700 (Thu, 12 Jul 2007) | 3 lines
Bug #1637365: add subsection about "__name__ == __main__" to the
Python tutorial.
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r56308 | georg.brandl | 2007-07-12 02:59:22 -0700 (Thu, 12 Jul 2007) | 5 lines
Patch #1675424: Added tests for uncovered code in the zipfile module.
The KeyError raised by Zipfile.getinfo for nonexistent names now has
a descriptive message.
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r56340 | facundo.batista | 2007-07-13 03:43:44 -0700 (Fri, 13 Jul 2007) | 6 lines
Added tests for basic behavior of DateTime, Binary, and Fault classes
and the escape function. Check that marshalling recursive sequences &
dicts raises TypeError. Check that marshalling out-of-range ints
raises OverflowError [Alan McIntyre - GSoC]
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r56345 | raymond.hettinger | 2007-07-13 05:09:41 -0700 (Fri, 13 Jul 2007) | 1 line
Correct the docs for takewhile(). Improve the recipe for nth(). Should be backported
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r56348 | thomas.heller | 2007-07-13 06:59:39 -0700 (Fri, 13 Jul 2007) | 4 lines
Repair COMError. Since exceptions are new style classes now, setting
the methods and docstring after the type creation does not work, they
must be in the dictionary before creating the type.
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r56349 | thomas.heller | 2007-07-13 07:18:06 -0700 (Fri, 13 Jul 2007) | 1 line
Add tests for _ctypes.COMError.
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r56350 | thomas.heller | 2007-07-13 09:50:43 -0700 (Fri, 13 Jul 2007) | 4 lines
Do not try to load the GLUT library in the ctypes tests. This test
adds little value, but has a large problem on OS X, as explained in
SF# 1581906.
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r56352 | thomas.heller | 2007-07-13 10:12:23 -0700 (Fri, 13 Jul 2007) | 3 lines
Fix for SF# 1701409: segfault in c_char_p of ctypes. The repr output
of c_char_p and c_wchar_p has changed as a sideeffect.
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r56355 | thomas.heller | 2007-07-13 10:46:54 -0700 (Fri, 13 Jul 2007) | 3 lines
Fix for SF# 1649098: avoid zero-sized array declaration in structure.
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r56357 | thomas.heller | 2007-07-13 12:51:55 -0700 (Fri, 13 Jul 2007) | 3 lines
PyType_stgdict() returns a borrowed reference which must not be
Py_DECREF'd.
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r56360 | barry.warsaw | 2007-07-13 15:12:58 -0700 (Fri, 13 Jul 2007) | 10 lines
In response to this SF bug:
[ 1752723 ] email.message_from_string: initial line gets discarded
I added a test to assert that when the first line of text passed to
message_from_string() contains a leading space, the message ends up with the
appropriate FirstHeaderLineIsContinuationDefect on its defects list.
The bug is invalid.
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r56364 | georg.brandl | 2007-07-14 10:12:23 -0700 (Sat, 14 Jul 2007) | 2 lines
Bug #1753406: missing \versionadded for subprocess.check_call.
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r56366 | georg.brandl | 2007-07-14 10:32:41 -0700 (Sat, 14 Jul 2007) | 2 lines
Clarify webbrowser.open description.
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r56380 | andrew.kuchling | 2007-07-14 13:58:21 -0700 (Sat, 14 Jul 2007) | 1 line
Typo fix
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r56382 | andrew.kuchling | 2007-07-14 14:56:19 -0700 (Sat, 14 Jul 2007) | 7 lines
Avoid exception if there's a stray directory inside a Maildir folder.
The Maildir specification doesn't seem to say anything about this
situation, and it can happen if you're keeping a Maildir mailbox in
Subversion (.svn directories) or some similar system. The patch just
ignores directories in the cur/, new/, tmp/ folders.
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r56392 | facundo.batista | 2007-07-14 15:41:45 -0700 (Sat, 14 Jul 2007) | 6 lines
First version. Includes tests for helper functions: read, write,
_exception, readwrite, closeall, compact_traceback; and for classes
dispatcher, dispatcher_with_send, and file_wrapper.
[Alan McIntyre - GSoC]
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r56399 | facundo.batista | 2007-07-15 13:30:39 -0700 (Sun, 15 Jul 2007) | 5 lines
Changed the used port and commented out some tests that uses
a non documented function that appers to uses resources
not present in Windows.
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r56412 | facundo.batista | 2007-07-16 19:19:39 -0700 (Mon, 16 Jul 2007) | 6 lines
Prevent asyncore.dispatcher tests from hanging by adding loop counters
to server & client, and by adding asyncore.close_all calls in
tearDown. Also choose correct expected logging results based on the
value of __debug__ [Alan McIntyre - GSoC]
........
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r56442 | guido.van.rossum | 2007-07-18 10:26:38 -0700 (Wed, 18 Jul 2007) | 14 lines
Merged revisions 56413-56441 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r56439 | georg.brandl | 2007-07-17 23:37:55 -0700 (Tue, 17 Jul 2007) | 2 lines
Use "Unix" as platform name, not "UNIX".
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r56441 | guido.van.rossum | 2007-07-18 10:19:14 -0700 (Wed, 18 Jul 2007) | 3 lines
SF patch# 1755885 by Kurt Kaiser: show location of Unicode escape errors.
(Slightly tweaked for style and refcounts.)
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| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Wed, 18 Jul 2007 18:15:48 +0000 |
| parents | 090588a17490 |
| children | 7e8469617b1c |
| rev | line source |
|---|---|
| 35742 | 1 /* |
| 2 * This file includes functions to transform a concrete syntax tree (CST) to | |
| 3 * an abstract syntax tree (AST). The main function is PyAST_FromNode(). | |
| 4 * | |
| 5 */ | |
| 6 #include "Python.h" | |
| 7 #include "Python-ast.h" | |
| 8 #include "grammar.h" | |
| 9 #include "node.h" | |
|
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10 #include "pyarena.h" |
| 35742 | 11 #include "ast.h" |
| 12 #include "token.h" | |
| 13 #include "parsetok.h" | |
| 14 #include "graminit.h" | |
| 15 | |
| 16 #include <assert.h> | |
| 17 | |
| 18 /* Data structure used internally */ | |
| 19 struct compiling { | |
|
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20 char *c_encoding; /* source encoding */ |
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21 PyArena *c_arena; /* arena for allocating memeory */ |
| 35742 | 22 }; |
| 23 | |
| 24 static asdl_seq *seq_for_testlist(struct compiling *, const node *); | |
| 25 static expr_ty ast_for_expr(struct compiling *, const node *); | |
| 26 static stmt_ty ast_for_stmt(struct compiling *, const node *); | |
| 27 static asdl_seq *ast_for_suite(struct compiling *, const node *); | |
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28 static asdl_seq *ast_for_exprlist(struct compiling *, const node *, |
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29 expr_context_ty); |
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30 static expr_ty ast_for_testlist(struct compiling *, const node *); |
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31 static stmt_ty ast_for_classdef(struct compiling *, const node *, asdl_seq *); |
| 35742 | 32 |
| 33 /* Note different signature for ast_for_call */ | |
| 34 static expr_ty ast_for_call(struct compiling *, const node *, expr_ty); | |
| 35 | |
| 36 static PyObject *parsenumber(const char *); | |
| 40894 | 37 static PyObject *parsestr(const node *n, const char *encoding, int *bytesmode); |
| 38 static PyObject *parsestrplus(struct compiling *, const node *n, | |
| 39 int *bytesmode); | |
| 35742 | 40 |
| 41 #ifndef LINENO | |
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42 #define LINENO(n) ((n)->n_lineno) |
| 35742 | 43 #endif |
| 44 | |
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45 #define COMP_GENEXP 0 |
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46 #define COMP_LISTCOMP 1 |
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47 #define COMP_SETCOMP 2 |
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48 |
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49 static identifier |
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50 new_identifier(const char* n, PyArena *arena) { |
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51 PyObject* id = PyUnicode_DecodeUTF8(n, strlen(n), NULL); |
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52 PyUnicode_InternInPlace(&id); |
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53 PyArena_AddPyObject(arena, id); |
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54 return id; |
| 35742 | 55 } |
| 56 | |
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57 #define NEW_IDENTIFIER(n) new_identifier(STR(n), c->c_arena) |
| 35742 | 58 |
| 59 /* This routine provides an invalid object for the syntax error. | |
| 60 The outermost routine must unpack this error and create the | |
| 61 proper object. We do this so that we don't have to pass | |
| 62 the filename to everything function. | |
| 63 | |
| 64 XXX Maybe we should just pass the filename... | |
| 65 */ | |
| 66 | |
| 67 static int | |
| 68 ast_error(const node *n, const char *errstr) | |
| 69 { | |
| 70 PyObject *u = Py_BuildValue("zi", errstr, LINENO(n)); | |
| 71 if (!u) | |
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72 return 0; |
| 35742 | 73 PyErr_SetObject(PyExc_SyntaxError, u); |
| 74 Py_DECREF(u); | |
| 75 return 0; | |
| 76 } | |
| 77 | |
| 78 static void | |
| 79 ast_error_finish(const char *filename) | |
| 80 { | |
| 81 PyObject *type, *value, *tback, *errstr, *loc, *tmp; | |
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82 long lineno; |
| 35742 | 83 |
| 84 assert(PyErr_Occurred()); | |
| 85 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
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86 return; |
| 35742 | 87 |
| 88 PyErr_Fetch(&type, &value, &tback); | |
| 89 errstr = PyTuple_GetItem(value, 0); | |
| 90 if (!errstr) | |
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91 return; |
| 35742 | 92 Py_INCREF(errstr); |
| 93 lineno = PyInt_AsLong(PyTuple_GetItem(value, 1)); | |
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94 if (lineno == -1) { |
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95 Py_DECREF(errstr); |
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96 return; |
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97 } |
| 35742 | 98 Py_DECREF(value); |
| 99 | |
| 100 loc = PyErr_ProgramText(filename, lineno); | |
| 101 if (!loc) { | |
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102 Py_INCREF(Py_None); |
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103 loc = Py_None; |
| 35742 | 104 } |
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105 tmp = Py_BuildValue("(zlOO)", filename, lineno, Py_None, loc); |
| 35742 | 106 Py_DECREF(loc); |
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107 if (!tmp) { |
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108 Py_DECREF(errstr); |
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109 return; |
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110 } |
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111 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 112 Py_DECREF(errstr); |
| 113 Py_DECREF(tmp); | |
| 114 if (!value) | |
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115 return; |
| 35742 | 116 PyErr_Restore(type, value, tback); |
| 117 } | |
| 118 | |
| 119 /* num_stmts() returns number of contained statements. | |
| 120 | |
| 121 Use this routine to determine how big a sequence is needed for | |
| 122 the statements in a parse tree. Its raison d'etre is this bit of | |
| 123 grammar: | |
| 124 | |
| 125 stmt: simple_stmt | compound_stmt | |
| 126 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 127 | |
| 128 A simple_stmt can contain multiple small_stmt elements joined | |
| 129 by semicolons. If the arg is a simple_stmt, the number of | |
| 130 small_stmt elements is returned. | |
| 131 */ | |
| 132 | |
| 133 static int | |
| 134 num_stmts(const node *n) | |
| 135 { | |
| 136 int i, l; | |
| 137 node *ch; | |
| 138 | |
| 139 switch (TYPE(n)) { | |
| 140 case single_input: | |
| 141 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 142 return 0; | |
| 143 else | |
| 144 return num_stmts(CHILD(n, 0)); | |
| 145 case file_input: | |
| 146 l = 0; | |
| 147 for (i = 0; i < NCH(n); i++) { | |
| 148 ch = CHILD(n, i); | |
| 149 if (TYPE(ch) == stmt) | |
| 150 l += num_stmts(ch); | |
| 151 } | |
| 152 return l; | |
| 153 case stmt: | |
| 154 return num_stmts(CHILD(n, 0)); | |
| 155 case compound_stmt: | |
| 156 return 1; | |
| 157 case simple_stmt: | |
| 158 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 159 case suite: | |
| 160 if (NCH(n) == 1) | |
| 161 return num_stmts(CHILD(n, 0)); | |
| 162 else { | |
| 163 l = 0; | |
| 164 for (i = 2; i < (NCH(n) - 1); i++) | |
| 165 l += num_stmts(CHILD(n, i)); | |
| 166 return l; | |
| 167 } | |
| 168 default: { | |
| 169 char buf[128]; | |
| 170 | |
| 171 sprintf(buf, "Non-statement found: %d %d\n", | |
| 172 TYPE(n), NCH(n)); | |
| 173 Py_FatalError(buf); | |
| 174 } | |
| 175 } | |
| 176 assert(0); | |
| 177 return 0; | |
| 178 } | |
| 179 | |
| 180 /* Transform the CST rooted at node * to the appropriate AST | |
| 181 */ | |
| 182 | |
| 183 mod_ty | |
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184 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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185 PyArena *arena) |
| 35742 | 186 { |
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187 int i, j, k, num; |
| 35742 | 188 asdl_seq *stmts = NULL; |
| 189 stmt_ty s; | |
| 190 node *ch; | |
| 191 struct compiling c; | |
| 192 | |
| 193 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
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194 c.c_encoding = "utf-8"; |
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195 if (TYPE(n) == encoding_decl) { |
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196 #if 0 |
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197 ast_error(n, "encoding declaration in Unicode string"); |
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198 goto error; |
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199 #endif |
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200 n = CHILD(n, 0); |
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201 } |
| 35742 | 202 } else if (TYPE(n) == encoding_decl) { |
| 203 c.c_encoding = STR(n); | |
| 204 n = CHILD(n, 0); | |
| 205 } else { | |
| 206 c.c_encoding = NULL; | |
| 207 } | |
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208 c.c_arena = arena; |
| 35742 | 209 |
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210 k = 0; |
| 35742 | 211 switch (TYPE(n)) { |
| 212 case file_input: | |
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213 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 214 if (!stmts) |
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215 return NULL; |
| 35742 | 216 for (i = 0; i < NCH(n) - 1; i++) { |
| 217 ch = CHILD(n, i); | |
| 218 if (TYPE(ch) == NEWLINE) | |
| 219 continue; | |
| 220 REQ(ch, stmt); | |
| 221 num = num_stmts(ch); | |
| 222 if (num == 1) { | |
| 223 s = ast_for_stmt(&c, ch); | |
| 224 if (!s) | |
| 225 goto error; | |
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226 asdl_seq_SET(stmts, k++, s); |
| 35742 | 227 } |
| 228 else { | |
| 229 ch = CHILD(ch, 0); | |
| 230 REQ(ch, simple_stmt); | |
| 231 for (j = 0; j < num; j++) { | |
| 232 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 233 if (!s) | |
| 234 goto error; | |
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235 asdl_seq_SET(stmts, k++, s); |
| 35742 | 236 } |
| 237 } | |
| 238 } | |
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239 return Module(stmts, arena); |
| 35742 | 240 case eval_input: { |
| 241 expr_ty testlist_ast; | |
| 242 | |
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243 /* XXX Why not comp_for here? */ |
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244 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 245 if (!testlist_ast) |
| 246 goto error; | |
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247 return Expression(testlist_ast, arena); |
| 35742 | 248 } |
| 249 case single_input: | |
| 250 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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251 stmts = asdl_seq_new(1, arena); |
| 35742 | 252 if (!stmts) |
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253 goto error; |
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254 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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255 arena)); |
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256 if (!asdl_seq_GET(stmts, 0)) |
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257 goto error; |
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258 return Interactive(stmts, arena); |
| 35742 | 259 } |
| 260 else { | |
| 261 n = CHILD(n, 0); | |
| 262 num = num_stmts(n); | |
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263 stmts = asdl_seq_new(num, arena); |
| 35742 | 264 if (!stmts) |
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265 goto error; |
| 35742 | 266 if (num == 1) { |
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267 s = ast_for_stmt(&c, n); |
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268 if (!s) |
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269 goto error; |
| 35742 | 270 asdl_seq_SET(stmts, 0, s); |
| 271 } | |
| 272 else { | |
| 273 /* Only a simple_stmt can contain multiple statements. */ | |
| 274 REQ(n, simple_stmt); | |
| 275 for (i = 0; i < NCH(n); i += 2) { | |
| 276 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 277 break; | |
| 278 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 279 if (!s) | |
| 280 goto error; | |
| 281 asdl_seq_SET(stmts, i / 2, s); | |
| 282 } | |
| 283 } | |
| 284 | |
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285 return Interactive(stmts, arena); |
| 35742 | 286 } |
| 287 default: | |
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288 PyErr_Format(PyExc_SystemError, |
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289 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 290 goto error; |
| 291 } | |
| 292 error: | |
| 293 ast_error_finish(filename); | |
| 294 return NULL; | |
| 295 } | |
| 296 | |
| 297 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 298 */ | |
| 299 | |
| 300 static operator_ty | |
| 301 get_operator(const node *n) | |
| 302 { | |
| 303 switch (TYPE(n)) { | |
| 304 case VBAR: | |
| 305 return BitOr; | |
| 306 case CIRCUMFLEX: | |
| 307 return BitXor; | |
| 308 case AMPER: | |
| 309 return BitAnd; | |
| 310 case LEFTSHIFT: | |
| 311 return LShift; | |
| 312 case RIGHTSHIFT: | |
| 313 return RShift; | |
| 314 case PLUS: | |
| 315 return Add; | |
| 316 case MINUS: | |
| 317 return Sub; | |
| 318 case STAR: | |
| 319 return Mult; | |
| 320 case SLASH: | |
| 321 return Div; | |
| 322 case DOUBLESLASH: | |
| 323 return FloorDiv; | |
| 324 case PERCENT: | |
| 325 return Mod; | |
| 326 default: | |
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327 return (operator_ty)0; |
| 35742 | 328 } |
| 329 } | |
| 330 | |
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331 static const char* FORBIDDEN[] = { |
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332 "None", |
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333 "True", |
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334 "False", |
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335 NULL, |
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336 }; |
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337 |
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338 static int |
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339 forbidden_name(expr_ty e, const node *n) |
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340 { |
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341 const char **p; |
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342 assert(PyUnicode_Check(e->v.Name.id)); |
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343 for (p = FORBIDDEN; *p; p++) { |
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344 if (PyUnicode_CompareWithASCIIString(e->v.Name.id, *p) == 0) { |
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345 ast_error(n, "assignment to keyword"); |
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346 return 1; |
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347 } |
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348 } |
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349 return 0; |
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350 } |
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351 |
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352 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 353 |
| 354 Only sets context for expr kinds that "can appear in assignment context" | |
| 355 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 356 an appropriate syntax error and returns false. | |
| 357 */ | |
| 358 | |
| 359 static int | |
| 360 set_context(expr_ty e, expr_context_ty ctx, const node *n) | |
| 361 { | |
| 362 asdl_seq *s = NULL; | |
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363 /* If a particular expression type can't be used for assign / delete, |
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364 set expr_name to its name and an error message will be generated. |
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365 */ |
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366 const char* expr_name = NULL; |
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367 |
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368 /* The ast defines augmented store and load contexts, but the |
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369 implementation here doesn't actually use them. The code may be |
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370 a little more complex than necessary as a result. It also means |
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371 that expressions in an augmented assignment have a Store context. |
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372 Consider restructuring so that augmented assignment uses |
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373 set_context(), too. |
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374 */ |
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375 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 376 |
| 377 switch (e->kind) { | |
| 378 case Attribute_kind: | |
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379 e->v.Attribute.ctx = ctx; |
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380 break; |
| 35742 | 381 case Subscript_kind: |
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382 e->v.Subscript.ctx = ctx; |
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383 break; |
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384 case Starred_kind: |
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385 e->v.Starred.ctx = ctx; |
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386 if (!set_context(e->v.Starred.value, ctx, n)) |
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387 return 0; |
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388 break; |
| 35742 | 389 case Name_kind: |
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390 if (ctx == Store) { |
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391 if (forbidden_name(e, n)) |
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392 return 0; /* forbidden_name() calls ast_error() */ |
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393 } |
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394 e->v.Name.ctx = ctx; |
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395 break; |
| 35742 | 396 case List_kind: |
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397 e->v.List.ctx = ctx; |
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398 s = e->v.List.elts; |
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399 break; |
| 35742 | 400 case Tuple_kind: |
| 401 if (asdl_seq_LEN(e->v.Tuple.elts) == 0) | |
| 402 return ast_error(n, "can't assign to ()"); | |
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403 e->v.Tuple.ctx = ctx; |
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404 s = e->v.Tuple.elts; |
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405 break; |
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406 case Lambda_kind: |
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407 expr_name = "lambda"; |
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408 break; |
| 35742 | 409 case Call_kind: |
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410 expr_name = "function call"; |
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411 break; |
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412 case BoolOp_kind: |
| 35742 | 413 case BinOp_kind: |
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414 case UnaryOp_kind: |
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415 expr_name = "operator"; |
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416 break; |
| 35742 | 417 case GeneratorExp_kind: |
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418 expr_name = "generator expression"; |
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419 break; |
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420 case Yield_kind: |
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421 expr_name = "yield expression"; |
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423 case ListComp_kind: |
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424 expr_name = "list comprehension"; |
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425 break; |
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426 case SetComp_kind: |
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427 expr_name = "set comprehension"; |
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428 break; |
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429 case DictComp_kind: |
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430 expr_name = "dict comprehension"; |
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432 case Dict_kind: |
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433 case Set_kind: |
| 35742 | 434 case Num_kind: |
| 435 case Str_kind: | |
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436 expr_name = "literal"; |
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437 break; |
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438 case Ellipsis_kind: |
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439 expr_name = "Ellipsis"; |
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440 break; |
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441 case Compare_kind: |
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442 expr_name = "comparison"; |
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443 break; |
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444 case IfExp_kind: |
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445 expr_name = "conditional expression"; |
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446 break; |
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447 default: |
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448 PyErr_Format(PyExc_SystemError, |
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449 "unexpected expression in assignment %d (line %d)", |
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450 e->kind, e->lineno); |
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451 return 0; |
| 35742 | 452 } |
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453 /* Check for error string set by switch */ |
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454 if (expr_name) { |
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455 char buf[300]; |
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456 PyOS_snprintf(buf, sizeof(buf), |
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457 "can't %s %s", |
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458 ctx == Store ? "assign to" : "delete", |
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459 expr_name); |
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460 return ast_error(n, buf); |
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461 } |
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462 |
| 35742 | 463 /* If the LHS is a list or tuple, we need to set the assignment |
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464 context for all the contained elements. |
| 35742 | 465 */ |
| 466 if (s) { | |
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467 int i; |
| 35742 | 468 |
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469 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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470 if (!set_context((expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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471 return 0; |
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472 } |
| 35742 | 473 } |
| 474 return 1; | |
| 475 } | |
| 476 | |
| 477 static operator_ty | |
| 478 ast_for_augassign(const node *n) | |
| 479 { | |
| 480 REQ(n, augassign); | |
| 481 n = CHILD(n, 0); | |
| 482 switch (STR(n)[0]) { | |
| 483 case '+': | |
| 484 return Add; | |
| 485 case '-': | |
| 486 return Sub; | |
| 487 case '/': | |
| 488 if (STR(n)[1] == '/') | |
| 489 return FloorDiv; | |
| 490 else | |
| 491 return Div; | |
| 492 case '%': | |
| 493 return Mod; | |
| 494 case '<': | |
| 495 return LShift; | |
| 496 case '>': | |
| 497 return RShift; | |
| 498 case '&': | |
| 499 return BitAnd; | |
| 500 case '^': | |
| 501 return BitXor; | |
| 502 case '|': | |
| 503 return BitOr; | |
| 504 case '*': | |
| 505 if (STR(n)[1] == '*') | |
| 506 return Pow; | |
| 507 else | |
| 508 return Mult; | |
| 509 default: | |
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510 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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511 return (operator_ty)0; |
| 35742 | 512 } |
| 513 } | |
| 514 | |
| 515 static cmpop_ty | |
| 516 ast_for_comp_op(const node *n) | |
| 517 { | |
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518 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 519 |'is' 'not' |
| 520 */ | |
| 521 REQ(n, comp_op); | |
| 522 if (NCH(n) == 1) { | |
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523 n = CHILD(n, 0); |
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524 switch (TYPE(n)) { |
| 35742 | 525 case LESS: |
| 526 return Lt; | |
| 527 case GREATER: | |
| 528 return Gt; | |
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529 case EQEQUAL: /* == */ |
| 35742 | 530 return Eq; |
| 531 case LESSEQUAL: | |
| 532 return LtE; | |
| 533 case GREATEREQUAL: | |
| 534 return GtE; | |
| 535 case NOTEQUAL: | |
| 536 return NotEq; | |
| 537 case NAME: | |
| 538 if (strcmp(STR(n), "in") == 0) | |
| 539 return In; | |
| 540 if (strcmp(STR(n), "is") == 0) | |
| 541 return Is; | |
| 542 default: | |
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543 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 544 STR(n)); |
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545 return (cmpop_ty)0; |
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546 } |
| 35742 | 547 } |
| 548 else if (NCH(n) == 2) { | |
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549 /* handle "not in" and "is not" */ |
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550 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 551 case NAME: |
| 552 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 553 return NotIn; | |
| 554 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 555 return IsNot; | |
| 556 default: | |
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557 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 558 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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559 return (cmpop_ty)0; |
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560 } |
| 35742 | 561 } |
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562 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 563 NCH(n)); |
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564 return (cmpop_ty)0; |
| 35742 | 565 } |
| 566 | |
| 567 static asdl_seq * | |
| 568 seq_for_testlist(struct compiling *c, const node *n) | |
| 569 { | |
| 570 /* testlist: test (',' test)* [','] */ | |
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571 asdl_seq *seq; |
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572 expr_ty expression; |
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573 int i; |
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574 assert(TYPE(n) == testlist || TYPE(n) == testlist_comp); |
| 35742 | 575 |
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576 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 577 if (!seq) |
| 578 return NULL; | |
| 579 | |
| 580 for (i = 0; i < NCH(n); i += 2) { | |
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581 assert(TYPE(CHILD(n, i)) == test || TYPE(CHILD(n, i)) == test_nocond); |
| 35742 | 582 |
| 583 expression = ast_for_expr(c, CHILD(n, i)); | |
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584 if (!expression) |
| 35742 | 585 return NULL; |
| 586 | |
| 587 assert(i / 2 < seq->size); | |
| 588 asdl_seq_SET(seq, i / 2, expression); | |
| 589 } | |
| 590 return seq; | |
| 591 } | |
| 592 | |
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593 static arg_ty |
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594 compiler_arg(struct compiling *c, const node *n) |
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595 { |
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596 identifier name; |
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597 expr_ty annotation = NULL; |
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598 node *ch; |
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599 |
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600 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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601 ch = CHILD(n, 0); |
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602 name = NEW_IDENTIFIER(ch); |
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603 if (!name) |
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604 return NULL; |
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605 |
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606 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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607 annotation = ast_for_expr(c, CHILD(n, 2)); |
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608 if (!annotation) |
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609 return NULL; |
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610 } |
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611 |
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612 return arg(name, annotation, c->c_arena); |
| 35742 | 613 } |
| 614 | |
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615 /* returns -1 if failed to handle keyword only arguments |
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616 returns new position to keep processing if successful |
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617 (',' tfpdef ['=' test])* |
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618 ^^^ |
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619 start pointing here |
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620 */ |
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621 static int |
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622 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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623 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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624 { |
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625 node *ch; |
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626 expr_ty expression, annotation; |
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627 arg_ty arg; |
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628 int i = start; |
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629 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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630 assert(kwonlyargs != NULL); |
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631 assert(kwdefaults != NULL); |
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632 while (i < NCH(n)) { |
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633 ch = CHILD(n, i); |
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634 switch (TYPE(ch)) { |
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635 case vfpdef: |
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636 case tfpdef: |
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637 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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638 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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639 asdl_seq_SET(kwdefaults, j, expression); |
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640 i += 2; /* '=' and test */ |
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641 } |
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642 else { /* setting NULL if no default value exists */ |
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643 asdl_seq_SET(kwdefaults, j, NULL); |
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644 } |
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645 if (NCH(ch) == 3) { |
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646 /* ch is NAME ':' test */ |
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647 annotation = ast_for_expr(c, CHILD(ch, 2)); |
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648 if (!annotation) { |
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649 ast_error(ch, "expected expression"); |
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650 goto error; |
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651 } |
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652 } |
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653 else { |
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654 annotation = NULL; |
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655 } |
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656 ch = CHILD(ch, 0); |
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657 arg = arg(NEW_IDENTIFIER(ch), annotation, c->c_arena); |
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658 if (!arg) { |
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659 ast_error(ch, "expecting name"); |
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660 goto error; |
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661 } |
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662 asdl_seq_SET(kwonlyargs, j++, arg); |
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663 i += 2; /* the name and the comma */ |
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664 break; |
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665 case DOUBLESTAR: |
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666 return i; |
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667 default: |
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668 ast_error(ch, "unexpected node"); |
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669 goto error; |
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670 } |
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671 } |
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672 return i; |
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673 error: |
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674 return -1; |
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675 } |
| 35742 | 676 |
|
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677 /* Create AST for argument list. */ |
| 35742 | 678 |
| 679 static arguments_ty | |
| 680 ast_for_arguments(struct compiling *c, const node *n) | |
| 681 { | |
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682 /* This function handles both typedargslist (function definition) |
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683 and varargslist (lambda definition). |
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684 |
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685 parameters: '(' [typedargslist] ')' |
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686 typedargslist: ((tfpdef ['=' test] ',')* |
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687 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
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688 | '**' tfpdef) |
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689 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
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690 tfpdef: NAME [':' test] |
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691 varargslist: ((vfpdef ['=' test] ',')* |
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692 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
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693 | '**' vfpdef) |
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694 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
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695 vfpdef: NAME |
| 35742 | 696 */ |
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697 int i, j, k, nposargs = 0, nkwonlyargs = 0; |
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698 int nposdefaults = 0, found_default = 0; |
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699 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 700 identifier vararg = NULL, kwarg = NULL; |
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701 arg_ty arg; |
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702 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 703 node *ch; |
| 704 | |
| 705 if (TYPE(n) == parameters) { | |
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706 if (NCH(n) == 2) /* () as argument list */ |
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707 return arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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708 NULL, c->c_arena); |
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709 n = CHILD(n, 1); |
| 35742 | 710 } |
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711 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 712 |
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713 /* first count the number of positional args & defaults */ |
| 35742 | 714 for (i = 0; i < NCH(n); i++) { |
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715 ch = CHILD(n, i); |
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716 if (TYPE(ch) == STAR) { |
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717 /* skip star and possible argument */ |
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718 i++; |
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719 i += (TYPE(CHILD(n, i)) == tfpdef |
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720 || TYPE(CHILD(n, i)) == vfpdef); |
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721 break; |
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722 } |
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723 if (TYPE(ch) == DOUBLESTAR) break; |
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724 if (TYPE(ch) == vfpdef || TYPE(ch) == tfpdef) nposargs++; |
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725 if (TYPE(ch) == EQUAL) nposdefaults++; |
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726 } |
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727 /* count the number of keyword only args & |
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728 defaults for keyword only args */ |
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1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
729 for ( ; i < NCH(n); ++i) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
730 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
731 if (TYPE(ch) == DOUBLESTAR) break; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
732 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 733 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
734 posargs = (nposargs ? asdl_seq_new(nposargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
735 if (!posargs && nposargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
736 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
737 kwonlyargs = (nkwonlyargs ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
738 asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
739 if (!kwonlyargs && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
740 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
741 posdefaults = (nposdefaults ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
742 asdl_seq_new(nposdefaults, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
743 if (!posdefaults && nposdefaults) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
744 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
745 /* The length of kwonlyargs and kwdefaults are same |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
746 since we set NULL as default for keyword only argument w/o default |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
747 - we have sequence data structure, but no dictionary */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
748 kwdefaults = (nkwonlyargs ? |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
749 asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
750 if (!kwdefaults && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
751 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
752 |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
753 if (nposargs + nkwonlyargs > 255) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
754 ast_error(n, "more than 255 arguments"); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
755 return NULL; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
756 } |
| 35742 | 757 |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
758 /* tfpdef: NAME [':' test] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
759 vfpdef: NAME |
| 35742 | 760 */ |
| 761 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
762 j = 0; /* index for defaults */ |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
763 k = 0; /* index for args */ |
| 35742 | 764 while (i < NCH(n)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
765 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
766 switch (TYPE(ch)) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
767 case tfpdef: |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
768 case vfpdef: |
| 35742 | 769 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 770 anything other than EQUAL or a comma? */ | |
| 771 /* XXX Should NCH(n) check be made a separate check? */ | |
| 772 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
773 expr_ty expression = ast_for_expr(c, CHILD(n, i + 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
774 if (!expression) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
775 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
776 assert(posdefaults != NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
777 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 778 i += 2; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
779 found_default = 1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
780 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
781 else if (found_default) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
782 ast_error(n, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
783 "non-default argument follows default argument"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
784 goto error; |
| 35742 | 785 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
786 arg = compiler_arg(c, ch); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
787 if (!arg) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
788 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
789 asdl_seq_SET(posargs, k++, arg); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
790 |
| 35742 | 791 i += 2; /* the name and the comma */ |
| 792 break; | |
| 793 case STAR: | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
794 if (i+1 >= NCH(n)) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
795 ast_error(CHILD(n, i), "no name for vararg"); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
796 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
797 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
798 ch = CHILD(n, i+1); /* tfpdef or COMMA */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
799 if (TYPE(ch) == COMMA) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
800 int res = 0; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
801 i += 2; /* now follows keyword only arguments */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
802 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
803 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
804 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
805 i = res; /* res has new position to process */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
806 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
807 else { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
808 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
809 if (NCH(ch) > 1) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
810 /* there is an annotation on the vararg */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
811 varargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
812 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
813 i += 3; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
814 if (i < NCH(n) && (TYPE(CHILD(n, i)) == tfpdef |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
815 || TYPE(CHILD(n, i)) == vfpdef)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
816 int res = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
817 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
818 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
819 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
820 i = res; /* res has new position to process */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
821 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
822 } |
| 35742 | 823 break; |
| 824 case DOUBLESTAR: | |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
825 ch = CHILD(n, i+1); /* tfpdef */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
826 assert(TYPE(ch) == tfpdef || TYPE(ch) == vfpdef); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
827 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
828 if (NCH(ch) > 1) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
829 /* there is an annotation on the kwarg */ |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
830 kwargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
831 } |
| 35742 | 832 i += 3; |
| 833 break; | |
| 834 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
835 PyErr_Format(PyExc_SystemError, |
| 35742 | 836 "unexpected node in varargslist: %d @ %d", |
| 837 TYPE(ch), i); | |
| 838 goto error; | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
839 } |
| 35742 | 840 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
841 return arguments(posargs, vararg, varargannotation, kwonlyargs, kwarg, |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
842 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 843 error: |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
844 Py_XDECREF(vararg); |
|
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
845 Py_XDECREF(kwarg); |
| 35742 | 846 return NULL; |
| 847 } | |
| 848 | |
| 849 static expr_ty | |
| 850 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 851 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
852 expr_ty e; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
853 identifier id; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
854 int lineno, col_offset; |
| 35742 | 855 int i; |
| 856 | |
| 857 REQ(n, dotted_name); | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
858 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
859 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
860 col_offset = n->n_col_offset; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
861 |
| 35742 | 862 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 863 if (!id) | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
864 return NULL; |
|
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|
865 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 866 if (!e) |
|
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|
867 return NULL; |
| 35742 | 868 |
| 869 for (i = 2; i < NCH(n); i+=2) { | |
| 870 id = NEW_IDENTIFIER(CHILD(n, i)); | |
|
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|
871 if (!id) |
|
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|
872 return NULL; |
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873 e = Attribute(e, id, Load, lineno, col_offset, c->c_arena); |
|
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874 if (!e) |
|
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|
875 return NULL; |
| 35742 | 876 } |
| 877 | |
| 878 return e; | |
| 879 } | |
| 880 | |
| 881 static expr_ty | |
| 882 ast_for_decorator(struct compiling *c, const node *n) | |
| 883 { | |
| 884 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 885 expr_ty d = NULL; | |
|
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|
886 expr_ty name_expr; |
| 35742 | 887 |
| 888 REQ(n, decorator); | |
|
36418
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|
889 REQ(CHILD(n, 0), AT); |
|
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|
890 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 891 |
| 892 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 893 if (!name_expr) | |
|
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894 return NULL; |
|
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|
895 |
| 35742 | 896 if (NCH(n) == 3) { /* No arguments */ |
|
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|
897 d = name_expr; |
|
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|
898 name_expr = NULL; |
| 35742 | 899 } |
| 900 else if (NCH(n) == 5) { /* Call with no arguments */ | |
|
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|
901 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
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902 n->n_col_offset, c->c_arena); |
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903 if (!d) |
|
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|
904 return NULL; |
|
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|
905 name_expr = NULL; |
| 35742 | 906 } |
| 907 else { | |
|
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908 d = ast_for_call(c, CHILD(n, 3), name_expr); |
|
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909 if (!d) |
|
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910 return NULL; |
|
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|
911 name_expr = NULL; |
| 35742 | 912 } |
| 913 | |
| 914 return d; | |
| 915 } | |
| 916 | |
| 917 static asdl_seq* | |
| 918 ast_for_decorators(struct compiling *c, const node *n) | |
| 919 { | |
|
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|
920 asdl_seq* decorator_seq; |
|
35873
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|
921 expr_ty d; |
| 35742 | 922 int i; |
| 923 | |
| 924 REQ(n, decorators); | |
|
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|
925 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 926 if (!decorator_seq) |
| 927 return NULL; | |
|
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928 |
| 35742 | 929 for (i = 0; i < NCH(n); i++) { |
|
36718
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|
930 d = ast_for_decorator(c, CHILD(n, i)); |
|
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931 if (!d) |
|
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932 return NULL; |
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933 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 934 } |
| 935 return decorator_seq; | |
| 936 } | |
| 937 | |
| 938 static stmt_ty | |
|
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|
939 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 940 { |
|
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|
941 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
|
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|
942 identifier name; |
|
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|
943 arguments_ty args; |
|
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|
944 asdl_seq *body; |
|
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|
945 expr_ty returns = NULL; |
|
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|
946 int name_i = 1; |
| 35742 | 947 |
| 948 REQ(n, funcdef); | |
| 949 | |
| 950 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 951 if (!name) | |
|
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952 return NULL; |
| 35742 | 953 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 954 if (!args) | |
|
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955 return NULL; |
|
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|
956 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
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|
957 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
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|
958 if (!returns) |
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959 return NULL; |
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960 name_i += 2; |
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|
961 } |
| 35742 | 962 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 963 if (!body) | |
|
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964 return NULL; |
| 35742 | 965 |
|
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|
966 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
|
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|
967 n->n_col_offset, c->c_arena); |
| 35742 | 968 } |
| 969 | |
|
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|
970 static stmt_ty |
|
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|
971 ast_for_decorated(struct compiling *c, const node *n) |
|
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972 { |
|
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|
973 /* decorated: decorators (classdef | funcdef) */ |
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|
974 stmt_ty thing = NULL; |
|
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|
975 asdl_seq *decorator_seq = NULL; |
|
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|
976 |
|
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|
977 REQ(n, decorated); |
|
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|
978 |
|
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|
979 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
|
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980 if (!decorator_seq) |
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|
981 return NULL; |
|
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|
982 |
|
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|
983 assert(TYPE(CHILD(n, 1)) == funcdef || |
|
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984 TYPE(CHILD(n, 1)) == classdef); |
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|
985 |
|
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986 if (TYPE(CHILD(n, 1)) == funcdef) { |
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987 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
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988 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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|
989 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
|
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990 } |
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991 return thing; |
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992 } |
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|
993 |
| 35742 | 994 static expr_ty |
| 995 ast_for_lambdef(struct compiling *c, const node *n) | |
| 996 { | |
|
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|
997 /* lambdef: 'lambda' [varargslist] ':' test |
|
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|
998 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 999 arguments_ty args; |
| 1000 expr_ty expression; | |
| 1001 | |
| 1002 if (NCH(n) == 3) { | |
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1003 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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|
1004 NULL, c->c_arena); |
| 35742 | 1005 if (!args) |
| 1006 return NULL; | |
| 1007 expression = ast_for_expr(c, CHILD(n, 2)); | |
|
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|
1008 if (!expression) |
| 35742 | 1009 return NULL; |
| 1010 } | |
| 1011 else { | |
| 1012 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1013 if (!args) | |
| 1014 return NULL; | |
| 1015 expression = ast_for_expr(c, CHILD(n, 3)); | |
|
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|
1016 if (!expression) |
| 35742 | 1017 return NULL; |
| 1018 } | |
| 1019 | |
|
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1020 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1021 } |
| 1022 | |
|
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1023 static expr_ty |
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1024 ast_for_ifexpr(struct compiling *c, const node *n) |
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1025 { |
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1026 /* test: or_test 'if' or_test 'else' test */ |
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1027 expr_ty expression, body, orelse; |
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1028 |
|
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1029 assert(NCH(n) == 5); |
|
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1030 body = ast_for_expr(c, CHILD(n, 0)); |
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1031 if (!body) |
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1032 return NULL; |
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1033 expression = ast_for_expr(c, CHILD(n, 2)); |
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1034 if (!expression) |
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1035 return NULL; |
|
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|
1036 orelse = ast_for_expr(c, CHILD(n, 4)); |
|
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1037 if (!orelse) |
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1038 return NULL; |
|
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1039 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
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|
1040 c->c_arena); |
|
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1041 } |
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1042 |
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1043 /* |
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1044 Count the number of 'for' loops in a comprehension. |
| 35742 | 1045 |
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1046 Helper for ast_for_comprehension(). |
| 35742 | 1047 */ |
| 1048 | |
| 1049 static int | |
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1050 count_comp_fors(const node *n) |
| 35742 | 1051 { |
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1052 int n_fors = 0; |
| 35742 | 1053 |
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1054 count_comp_for: |
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1055 n_fors++; |
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1056 REQ(n, comp_for); |
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1057 if (NCH(n) == 5) |
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1058 n = CHILD(n, 4); |
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1059 else |
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1060 return n_fors; |
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1061 count_comp_iter: |
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1062 REQ(n, comp_iter); |
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1063 n = CHILD(n, 0); |
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1064 if (TYPE(n) == comp_for) |
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1065 goto count_comp_for; |
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1066 else if (TYPE(n) == comp_if) { |
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1067 if (NCH(n) == 3) { |
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1068 n = CHILD(n, 2); |
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1069 goto count_comp_iter; |
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1070 } |
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1071 else |
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1072 return n_fors; |
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1073 } |
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1074 |
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1075 /* Should never be reached */ |
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1076 PyErr_SetString(PyExc_SystemError, |
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1077 "logic error in count_comp_fors"); |
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1078 return -1; |
| 35742 | 1079 } |
| 1080 | |
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1081 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1082 |
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1083 Helper for ast_for_comprehension(). |
| 35742 | 1084 */ |
| 1085 | |
| 1086 static int | |
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1087 count_comp_ifs(const node *n) |
| 35742 | 1088 { |
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1089 int n_ifs = 0; |
| 35742 | 1090 |
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1091 while (1) { |
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1092 REQ(n, comp_iter); |
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1093 if (TYPE(CHILD(n, 0)) == comp_for) |
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1094 return n_ifs; |
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1095 n = CHILD(n, 0); |
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1096 REQ(n, comp_if); |
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1097 n_ifs++; |
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1098 if (NCH(n) == 2) |
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1099 return n_ifs; |
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1100 n = CHILD(n, 2); |
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1101 } |
| 35742 | 1102 } |
| 1103 | |
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1104 static asdl_seq * |
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1105 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1106 { |
| 1107 int i, n_fors; | |
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1108 asdl_seq *comps; |
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1109 |
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1110 n_fors = count_comp_fors(n); |
| 35742 | 1111 if (n_fors == -1) |
| 1112 return NULL; | |
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1113 |
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1114 comps = asdl_seq_new(n_fors, c->c_arena); |
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1115 if (!comps) |
| 35742 | 1116 return NULL; |
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1117 |
| 35742 | 1118 for (i = 0; i < n_fors; i++) { |
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1119 comprehension_ty comp; |
| 35742 | 1120 asdl_seq *t; |
| 1121 expr_ty expression; | |
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1122 node *for_ch; |
| 35742 | 1123 |
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1124 REQ(n, comp_for); |
| 35742 | 1125 |
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1126 for_ch = CHILD(n, 1); |
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1127 t = ast_for_exprlist(c, for_ch, Store); |
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1128 if (!t) |
| 35742 | 1129 return NULL; |
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1130 expression = ast_for_expr(c, CHILD(n, 3)); |
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1131 if (!expression) |
| 35742 | 1132 return NULL; |
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1133 |
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1134 /* Check the # of children rather than the length of t, since |
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1135 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
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1136 if (NCH(for_ch) == 1) |
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1137 comp = comprehension((expr_ty)asdl_seq_GET(t, 0), expression, |
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1138 NULL, c->c_arena); |
| 35742 | 1139 else |
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1140 comp = comprehension(Tuple(t, Store, LINENO(n), n->n_col_offset, |
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1141 c->c_arena), |
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1142 expression, NULL, c->c_arena); |
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1143 |
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1144 if (!comp) |
| 35742 | 1145 return NULL; |
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1146 |
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1147 if (NCH(n) == 5) { |
| 35742 | 1148 int j, n_ifs; |
| 1149 asdl_seq *ifs; | |
| 1150 | |
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1151 n = CHILD(n, 4); |
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1152 n_ifs = count_comp_ifs(n); |
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1153 if (n_ifs == -1) |
| 35742 | 1154 return NULL; |
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1155 |
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1156 ifs = asdl_seq_new(n_ifs, c->c_arena); |
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1157 if (!ifs) |
| 35742 | 1158 return NULL; |
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1159 |
| 35742 | 1160 for (j = 0; j < n_ifs; j++) { |
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1161 REQ(n, comp_iter); |
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1162 n = CHILD(n, 0); |
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1163 REQ(n, comp_if); |
| 35742 | 1164 |
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1165 expression = ast_for_expr(c, CHILD(n, 1)); |
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1166 if (!expression) |
|
35798
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1167 return NULL; |
|
36718
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1168 asdl_seq_SET(ifs, j, expression); |
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1169 if (NCH(n) == 3) |
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1170 n = CHILD(n, 2); |
| 35742 | 1171 } |
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1172 /* on exit, must guarantee that n is a comp_for */ |
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1173 if (TYPE(n) == comp_iter) |
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1174 n = CHILD(n, 0); |
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1175 comp->ifs = ifs; |
| 35742 | 1176 } |
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1177 asdl_seq_SET(comps, i, comp); |
| 35742 | 1178 } |
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1179 return comps; |
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1180 } |
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1181 |
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1182 static expr_ty |
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1183 ast_for_itercomp(struct compiling *c, const node *n, int type) |
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1184 { |
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1185 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1186 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1187 expr_ty elt; |
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1188 asdl_seq *comps; |
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1189 |
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1190 assert(NCH(n) > 1); |
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1191 |
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1192 elt = ast_for_expr(c, CHILD(n, 0)); |
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1193 if (!elt) |
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1194 return NULL; |
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1195 |
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1196 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1197 if (!comps) |
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1198 return NULL; |
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1199 |
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1200 if (type == COMP_GENEXP) |
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1201 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1202 else if (type == COMP_LISTCOMP) |
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1203 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1204 else if (type == COMP_SETCOMP) |
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1205 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1206 else |
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1207 /* Should never happen */ |
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1208 return NULL; |
| 35742 | 1209 } |
| 1210 | |
| 1211 static expr_ty | |
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1212 ast_for_dictcomp(struct compiling *c, const node *n) |
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1213 { |
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1214 expr_ty key, value; |
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1215 asdl_seq *comps; |
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1216 |
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1217 assert(NCH(n) > 3); |
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1218 REQ(CHILD(n, 1), COLON); |
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1219 |
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1220 key = ast_for_expr(c, CHILD(n, 0)); |
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1221 if (!key) |
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1222 return NULL; |
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1223 |
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1224 value = ast_for_expr(c, CHILD(n, 2)); |
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1225 if (!value) |
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1226 return NULL; |
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1227 |
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1228 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1229 if (!comps) |
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1230 return NULL; |
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1231 |
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1232 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1233 } |
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1234 |
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1235 static expr_ty |
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1236 ast_for_genexp(struct compiling *c, const node *n) |
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1237 { |
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1238 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1239 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1240 } |
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1241 |
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1242 static expr_ty |
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1243 ast_for_listcomp(struct compiling *c, const node *n) |
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1244 { |
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1245 assert(TYPE(n) == (testlist_comp)); |
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1246 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1247 } |
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1248 |
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1249 static expr_ty |
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1250 ast_for_setcomp(struct compiling *c, const node *n) |
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1251 { |
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1252 assert(TYPE(n) == (dictorsetmaker)); |
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1253 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1254 } |
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1255 |
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1256 |
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1257 static expr_ty |
| 35742 | 1258 ast_for_atom(struct compiling *c, const node *n) |
| 1259 { | |
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1260 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1261 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
|
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1262 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1263 */ |
| 1264 node *ch = CHILD(n, 0); | |
| 40894 | 1265 int bytesmode = 0; |
| 35742 | 1266 |
| 1267 switch (TYPE(ch)) { | |
| 1268 case NAME: | |
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1269 /* All names start in Load context, but may later be |
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1270 changed. */ |
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1271 return Name(NEW_IDENTIFIER(ch), Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1272 case STRING: { |
| 40894 | 1273 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1274 if (!str) { |
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1275 if (PyErr_ExceptionMatches(PyExc_UnicodeError)){ |
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1276 PyObject *type, *value, *tback, *errstr; |
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1277 PyErr_Fetch(&type, &value, &tback); |
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1278 errstr = ((PyUnicodeErrorObject *)value)->reason; |
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1279 if (errstr) { |
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1280 char *s = ""; |
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1281 char buf[128]; |
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1282 s = PyString_AsString(errstr); |
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1283 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
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1284 ast_error(n, buf); |
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1285 } else { |
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1286 ast_error(n, "(unicode error) unknown error"); |
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1287 } |
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1288 Py_DECREF(type); |
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1289 Py_DECREF(value); |
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1290 Py_XDECREF(tback); |
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1291 } |
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1292 return NULL; |
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1293 } |
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1294 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1295 if (bytesmode) |
| 1296 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1297 else | |
| 1298 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1299 } |
| 1300 case NUMBER: { | |
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1301 PyObject *pynum = parsenumber(STR(ch)); |
|
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Four months of trunk changes (including a few releases...)
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|
1302 if (!pynum) |
|
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diff
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|
1303 return NULL; |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1304 |
|
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parents:
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|
1305 PyArena_AddPyObject(c->c_arena, pynum); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
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|
1306 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1307 } |
|
41230
b1a18c7ed5ca
Make ELLIPSIS a separate token. This makes it a syntax error to write ". . ." for Ellipsis.
Georg Brandl <georg@python.org>
parents:
41226
diff
changeset
|
1308 case ELLIPSIS: /* Ellipsis */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1309 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1310 case LPAR: /* some parenthesized expressions */ |
|
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Four months of trunk changes (including a few releases...)
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|
1311 ch = CHILD(n, 1); |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
1312 |
|
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diff
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|
1313 if (TYPE(ch) == RPAR) |
|
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Four months of trunk changes (including a few releases...)
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|
1314 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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diff
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|
1315 |
|
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|
1316 if (TYPE(ch) == yield_expr) |
|
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Thomas Wouters <thomas@python.org>
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|
1317 return ast_for_expr(c, ch); |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1318 |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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diff
changeset
|
1319 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1320 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
|
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|
1321 return ast_for_genexp(c, ch); |
|
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|
1322 |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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changeset
|
1323 return ast_for_testlist(c, ch); |
| 35742 | 1324 case LSQB: /* list (or list comprehension) */ |
|
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|
1325 ch = CHILD(n, 1); |
|
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|
1326 |
|
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|
1327 if (TYPE(ch) == RSQB) |
|
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|
1328 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1329 |
|
41464
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Nick Coghlan <ncoghlan@gmail.com>
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|
1330 REQ(ch, testlist_comp); |
|
40450
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|
1331 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
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|
1332 asdl_seq *elts = seq_for_testlist(c, ch); |
|
cc992d75d5b3
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|
1333 if (!elts) |
|
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diff
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|
1334 return NULL; |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1335 |
|
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|
1336 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1337 } |
|
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|
1338 else |
|
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|
1339 return ast_for_listcomp(c, ch); |
| 35742 | 1340 case LBRACE: { |
|
41464
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|
1341 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
|
060c79f6d919
Hide list comp variables and support set comprehensions
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|
1342 * test (gen_for | (',' test)* [',']) */ |
|
40529
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|
1343 int i, size; |
|
54cd47788811
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|
1344 asdl_seq *keys, *values; |
|
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|
1345 |
|
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|
1346 ch = CHILD(n, 1); |
|
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Nick Coghlan <ncoghlan@gmail.com>
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|
1347 if (TYPE(ch) == RBRACE) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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|
1348 /* it's an empty dict */ |
|
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|
1349 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
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|
1350 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
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diff
changeset
|
1351 /* it's a simple set */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
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diff
changeset
|
1352 asdl_seq *elts; |
|
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SF patch 1547796 by Georg Brandl -- set literals.
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|
1353 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
|
41482
a5e410639e24
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|
1354 elts = asdl_seq_new(size, c->c_arena); |
|
41464
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|
1355 if (!elts) |
|
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|
1356 return NULL; |
|
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diff
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|
1357 for (i = 0; i < NCH(ch); i += 2) { |
|
d0b83c4630c0
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|
1358 expr_ty expression; |
|
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|
1359 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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|
1360 if (!expression) |
|
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|
1361 return NULL; |
|
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|
1362 asdl_seq_SET(elts, i / 2, expression); |
|
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|
1363 } |
|
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|
1364 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
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|
1365 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
|
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changeset
|
1366 /* it's a set comprehension */ |
|
060c79f6d919
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changeset
|
1367 return ast_for_setcomp(c, ch); |
|
42193
090588a17490
Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
42084
diff
changeset
|
1368 } else if (NCH(ch) > 3 && TYPE(CHILD(ch, 3)) == comp_for) { |
|
090588a17490
Merged revisions 56154-56264 via svnmerge from
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changeset
|
1369 return ast_for_dictcomp(c, ch); |
|
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diff
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|
1370 } else { |
|
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|
1371 /* it's a dict */ |
|
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|
1372 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
|
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parents:
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|
1373 keys = asdl_seq_new(size, c->c_arena); |
|
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|
1374 if (!keys) |
|
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changeset
|
1375 return NULL; |
|
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changeset
|
1376 |
|
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changeset
|
1377 values = asdl_seq_new(size, c->c_arena); |
|
d0b83c4630c0
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changeset
|
1378 if (!values) |
|
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changeset
|
1379 return NULL; |
|
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|
1380 |
|
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|
1381 for (i = 0; i < NCH(ch); i += 4) { |
|
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changeset
|
1382 expr_ty expression; |
|
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|
1383 |
|
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|
1384 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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changeset
|
1385 if (!expression) |
|
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|
1386 return NULL; |
|
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|
1387 |
|
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changeset
|
1388 asdl_seq_SET(keys, i / 4, expression); |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
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|
1389 |
|
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changeset
|
1390 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
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|
1391 if (!expression) |
|
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|
1392 return NULL; |
|
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|
1393 |
|
d0b83c4630c0
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|
1394 asdl_seq_SET(values, i / 4, expression); |
|
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|
1395 } |
|
d0b83c4630c0
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|
1396 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1397 } |
| 35742 | 1398 } |
| 1399 default: | |
|
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|
1400 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
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|
1401 return NULL; |
| 35742 | 1402 } |
| 1403 } | |
| 1404 | |
| 1405 static slice_ty | |
| 1406 ast_for_slice(struct compiling *c, const node *n) | |
| 1407 { | |
| 1408 node *ch; | |
| 1409 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1410 | |
| 1411 REQ(n, subscript); | |
| 1412 | |
| 1413 /* | |
|
39783
7a0ad110e91e
Patch #1550786: ellipsis literal.
Georg Brandl <georg@python.org>
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39782
diff
changeset
|
1414 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1415 sliceop: ':' [test] |
| 1416 */ | |
| 1417 ch = CHILD(n, 0); | |
| 1418 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1419 /* 'step' variable hold no significance in terms of being used over | |
| 1420 other vars */ | |
| 1421 step = ast_for_expr(c, ch); | |
| 1422 if (!step) | |
| 1423 return NULL; | |
| 1424 | |
|
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|
1425 return Index(step, c->c_arena); |
| 35742 | 1426 } |
| 1427 | |
| 1428 if (TYPE(ch) == test) { | |
|
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|
1429 lower = ast_for_expr(c, ch); |
| 35742 | 1430 if (!lower) |
| 1431 return NULL; | |
| 1432 } | |
| 1433 | |
| 1434 /* If there's an upper bound it's in the second or third position. */ | |
| 1435 if (TYPE(ch) == COLON) { | |
|
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changeset
|
1436 if (NCH(n) > 1) { |
|
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Four months of trunk changes (including a few releases...)
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changeset
|
1437 node *n2 = CHILD(n, 1); |
| 35742 | 1438 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1439 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1440 upper = ast_for_expr(c, n2); |
| 35742 | 1441 if (!upper) |
| 1442 return NULL; | |
| 1443 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1444 } |
| 35742 | 1445 } else if (NCH(n) > 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1446 node *n2 = CHILD(n, 2); |
| 35742 | 1447 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1448 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1449 upper = ast_for_expr(c, n2); |
| 35742 | 1450 if (!upper) |
| 1451 return NULL; | |
| 1452 } | |
| 1453 } | |
| 1454 | |
| 1455 ch = CHILD(n, NCH(n) - 1); | |
| 1456 if (TYPE(ch) == sliceop) { | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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diff
changeset
|
1457 if (NCH(ch) == 1) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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diff
changeset
|
1458 /* No expression, so step is None */ |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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diff
changeset
|
1459 ch = CHILD(ch, 0); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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diff
changeset
|
1460 step = Name(new_identifier("None", c->c_arena), Load, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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diff
changeset
|
1461 LINENO(ch), ch->n_col_offset, c->c_arena); |
| 35742 | 1462 if (!step) |
| 1463 return NULL; | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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diff
changeset
|
1464 } else { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
1465 ch = CHILD(ch, 1); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
1466 if (TYPE(ch) == test) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
1467 step = ast_for_expr(c, ch); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
1468 if (!step) |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
1469 return NULL; |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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diff
changeset
|
1470 } |
| 35742 | 1471 } |
| 1472 } | |
| 1473 | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1474 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1475 } |
| 1476 | |
| 1477 static expr_ty | |
| 1478 ast_for_binop(struct compiling *c, const node *n) | |
| 1479 { | |
|
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|
1480 /* Must account for a sequence of expressions. |
|
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|
1481 How should A op B op C by represented? |
|
06145fbc7ab9
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|
1482 BinOp(BinOp(A, op, B), op, C). |
|
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|
1483 */ |
| 35742 | 1484 |
|
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|
1485 int i, nops; |
|
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|
1486 expr_ty expr1, expr2, result; |
|
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|
1487 operator_ty newoperator; |
|
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|
1488 |
|
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|
1489 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
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|
1490 if (!expr1) |
|
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|
1491 return NULL; |
| 35742 | 1492 |
|
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|
1493 expr2 = ast_for_expr(c, CHILD(n, 2)); |
|
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|
1494 if (!expr2) |
|
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|
1495 return NULL; |
|
06145fbc7ab9
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|
1496 |
|
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|
1497 newoperator = get_operator(CHILD(n, 1)); |
|
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|
1498 if (!newoperator) |
|
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|
1499 return NULL; |
| 35742 | 1500 |
|
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|
1501 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
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|
1502 c->c_arena); |
|
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|
1503 if (!result) |
|
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|
1504 return NULL; |
| 35742 | 1505 |
|
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|
1506 nops = (NCH(n) - 1) / 2; |
|
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|
1507 for (i = 1; i < nops; i++) { |
|
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|
1508 expr_ty tmp_result, tmp; |
|
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|
1509 const node* next_oper = CHILD(n, i * 2 + 1); |
|
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|
1510 |
|
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|
1511 newoperator = get_operator(next_oper); |
|
37879
f731859e9b3b
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|
1512 if (!newoperator) |
| 35742 | 1513 return NULL; |
| 1514 | |
|
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|
1515 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
|
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|
1516 if (!tmp) |
| 35742 | 1517 return NULL; |
| 1518 | |
|
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|
1519 tmp_result = BinOp(result, newoperator, tmp, |
|
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|
1520 LINENO(next_oper), next_oper->n_col_offset, |
|
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|
1521 c->c_arena); |
|
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|
1522 if (!tmp) |
|
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|
1523 return NULL; |
|
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|
1524 result = tmp_result; |
|
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|
1525 } |
|
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|
1526 return result; |
| 35742 | 1527 } |
| 1528 | |
|
35799
842caa245917
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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35798
diff
changeset
|
1529 static expr_ty |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1530 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
|
842caa245917
Refactor code for translating "power" nodes.
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diff
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|
1531 { |
|
36686
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Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1532 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1533 subscriptlist: subscript (',' subscript)* [','] |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1534 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
8611f39cd82b
Fix parsing of subscriptlist.
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diff
changeset
|
1535 */ |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1536 REQ(n, trailer); |
|
842caa245917
Refactor code for translating "power" nodes.
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35798
diff
changeset
|
1537 if (TYPE(CHILD(n, 0)) == LPAR) { |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
changeset
|
1538 if (NCH(n) == 2) |
|
37879
f731859e9b3b
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parents:
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diff
changeset
|
1539 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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parents:
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diff
changeset
|
1540 n->n_col_offset, c->c_arena); |
|
35799
842caa245917
Refactor code for translating "power" nodes.
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parents:
35798
diff
changeset
|
1541 else |
|
36679
e1391910b026
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parents:
36676
diff
changeset
|
1542 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
changeset
|
1543 } |
|
36679
e1391910b026
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parents:
36676
diff
changeset
|
1544 else if (TYPE(CHILD(n, 0)) == DOT ) { |
|
e1391910b026
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parents:
36676
diff
changeset
|
1545 return Attribute(left_expr, NEW_IDENTIFIER(CHILD(n, 1)), Load, |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1546 LINENO(n), n->n_col_offset, c->c_arena); |
|
36679
e1391910b026
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parents:
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diff
changeset
|
1547 } |
|
e1391910b026
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parents:
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diff
changeset
|
1548 else { |
|
e1391910b026
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Jeremy Hylton <jeremy@alum.mit.edu>
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36676
diff
changeset
|
1549 REQ(CHILD(n, 0), LSQB); |
|
35799
842caa245917
Refactor code for translating "power" nodes.
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35798
diff
changeset
|
1550 REQ(CHILD(n, 2), RSQB); |
|
842caa245917
Refactor code for translating "power" nodes.
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diff
changeset
|
1551 n = CHILD(n, 1); |
|
36686
8611f39cd82b
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parents:
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diff
changeset
|
1552 if (NCH(n) == 1) { |
|
35799
842caa245917
Refactor code for translating "power" nodes.
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35798
diff
changeset
|
1553 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
842caa245917
Refactor code for translating "power" nodes.
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diff
changeset
|
1554 if (!slc) |
|
842caa245917
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changeset
|
1555 return NULL; |
|
37879
f731859e9b3b
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parents:
36877
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changeset
|
1556 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
1557 c->c_arena); |
|
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842caa245917
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changeset
|
1558 } |
|
842caa245917
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diff
changeset
|
1559 else { |
|
36686
8611f39cd82b
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diff
changeset
|
1560 /* The grammar is ambiguous here. The ambiguity is resolved |
|
8611f39cd82b
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36682
diff
changeset
|
1561 by treating the sequence as a tuple literal if there are |
|
8611f39cd82b
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36682
diff
changeset
|
1562 no slice features. |
|
8611f39cd82b
Fix parsing of subscriptlist.
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36682
diff
changeset
|
1563 */ |
|
35799
842caa245917
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35798
diff
changeset
|
1564 int j; |
|
842caa245917
Refactor code for translating "power" nodes.
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35798
diff
changeset
|
1565 slice_ty slc; |
|
36686
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Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1566 expr_ty e; |
|
40941
2ca14d6a369b
Whoops, fix build breakage. There were still a few uses of the bool type.
Neal Norwitz <nnorwitz@gmail.com>
parents:
40894
diff
changeset
|
1567 int simple = 1; |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1568 asdl_seq *slices, *elts; |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1569 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
35799
842caa245917
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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35798
diff
changeset
|
1570 if (!slices) |
|
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diff
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|
1571 return NULL; |
|
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diff
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|
1572 for (j = 0; j < NCH(n); j += 2) { |
|
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diff
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|
1573 slc = ast_for_slice(c, CHILD(n, j)); |
|
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ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
1574 if (!slc) |
|
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diff
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|
1575 return NULL; |
|
36686
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Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1576 if (slc->kind != Index_kind) |
|
40941
2ca14d6a369b
Whoops, fix build breakage. There were still a few uses of the bool type.
Neal Norwitz <nnorwitz@gmail.com>
parents:
40894
diff
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|
1577 simple = 0; |
|
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diff
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|
1578 asdl_seq_SET(slices, j / 2, slc); |
|
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diff
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|
1579 } |
|
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Fix parsing of subscriptlist.
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diff
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|
1580 if (!simple) { |
|
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Fix parsing of subscriptlist.
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diff
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|
1581 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
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|
1582 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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Fix parsing of subscriptlist.
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parents:
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diff
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|
1583 } |
|
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Fix parsing of subscriptlist.
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diff
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|
1584 /* extract Index values and put them in a Tuple */ |
|
8611f39cd82b
Fix parsing of subscriptlist.
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diff
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|
1585 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
36877
e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
parents:
36786
diff
changeset
|
1586 if (!elts) |
|
e9a7a2784e17
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Hye-Shik Chang <hyeshik@gmail.com>
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diff
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|
1587 return NULL; |
|
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Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
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|
1588 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
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Fix parsing of subscriptlist.
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|
1589 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
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Fix parsing of subscriptlist.
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|
1590 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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|
1591 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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diff
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|
1592 } |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1593 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
36686
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|
1594 if (!e) |
|
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Fix parsing of subscriptlist.
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|
1595 return NULL; |
|
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Fix parsing of subscriptlist.
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36682
diff
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|
1596 return Subscript(left_expr, Index(e, c->c_arena), |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
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|
1597 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1598 } |
|
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|
1599 } |
|
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|
1600 } |
|
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|
1601 |
|
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|
1602 static expr_ty |
|
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|
1603 ast_for_factor(struct compiling *c, const node *n) |
|
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|
1604 { |
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|
1605 node *pfactor, *ppower, *patom, *pnum; |
|
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|
1606 expr_ty expression; |
|
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|
1607 |
|
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|
1608 /* If the unary - operator is applied to a constant, don't generate |
|
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|
1609 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
|
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|
1610 constant. The peephole optimizer already does something like |
|
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|
1611 this but it doesn't handle the case where the constant is |
|
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|
1612 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
|
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|
1613 PyLongObject. |
|
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1614 */ |
|
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|
1615 if (TYPE(CHILD(n, 0)) == MINUS |
|
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|
1616 && NCH(n) == 2 |
|
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|
1617 && TYPE((pfactor = CHILD(n, 1))) == factor |
|
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|
1618 && NCH(pfactor) == 1 |
|
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|
1619 && TYPE((ppower = CHILD(pfactor, 0))) == power |
|
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|
1620 && NCH(ppower) == 1 |
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|
1621 && TYPE((patom = CHILD(ppower, 0))) == atom |
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1622 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
|
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|
1623 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
|
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|
1624 if (s == NULL) |
|
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|
1625 return NULL; |
|
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|
1626 s[0] = '-'; |
|
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|
1627 strcpy(s + 1, STR(pnum)); |
|
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|
1628 PyObject_FREE(STR(pnum)); |
|
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|
1629 STR(pnum) = s; |
|
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|
1630 return ast_for_atom(c, patom); |
|
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1631 } |
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|
1632 |
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|
1633 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
1634 if (!expression) |
|
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|
1635 return NULL; |
|
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|
1636 |
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|
1637 switch (TYPE(CHILD(n, 0))) { |
|
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|
1638 case PLUS: |
|
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|
1639 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
|
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|
1640 c->c_arena); |
|
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|
1641 case MINUS: |
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|
1642 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
|
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|
1643 c->c_arena); |
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|
1644 case TILDE: |
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|
1645 return UnaryOp(Invert, expression, LINENO(n), |
|
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|
1646 n->n_col_offset, c->c_arena); |
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1647 } |
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|
1648 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
|
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|
1649 TYPE(CHILD(n, 0))); |
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|
1650 return NULL; |
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|
1651 } |
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1652 |
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|
1653 static expr_ty |
|
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1654 ast_for_power(struct compiling *c, const node *n) |
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
1655 { |
|
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Refactor code for translating "power" nodes.
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|
1656 /* power: atom trailer* ('**' factor)* |
|
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|
1657 */ |
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|
1658 int i; |
|
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|
1659 expr_ty e, tmp; |
|
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|
1660 REQ(n, power); |
|
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|
1661 e = ast_for_atom(c, CHILD(n, 0)); |
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|
1662 if (!e) |
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|
1663 return NULL; |
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|
1664 if (NCH(n) == 1) |
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|
1665 return e; |
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|
1666 for (i = 1; i < NCH(n); i++) { |
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|
1667 node *ch = CHILD(n, i); |
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|
1668 if (TYPE(ch) != trailer) |
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|
1669 break; |
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|
1670 tmp = ast_for_trailer(c, ch, e); |
|
36065
ea083efdc96c
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|
1671 if (!tmp) |
|
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|
1672 return NULL; |
|
40450
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|
1673 tmp->lineno = e->lineno; |
|
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|
1674 tmp->col_offset = e->col_offset; |
|
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|
1675 e = tmp; |
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|
1676 } |
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|
1677 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
842caa245917
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1678 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1679 if (!f) |
|
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842caa245917
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1680 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1681 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1682 if (!tmp) |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1683 return NULL; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1684 e = tmp; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1685 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1686 return e; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1687 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1688 |
|
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|
1689 static expr_ty |
|
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|
1690 ast_for_starred(struct compiling *c, const node *n) |
|
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|
1691 { |
|
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|
1692 expr_ty tmp; |
|
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|
1693 REQ(n, star_expr); |
|
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|
1694 |
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|
1695 tmp = ast_for_expr(c, CHILD(n, 1)); |
|
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|
1696 if (!tmp) |
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|
1697 return NULL; |
|
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|
1698 |
|
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|
1699 /* The Load context is changed later. */ |
|
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|
1700 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1701 } |
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|
1702 |
|
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|
1703 |
| 35742 | 1704 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1705 */ | |
| 1706 | |
| 1707 static expr_ty | |
| 1708 ast_for_expr(struct compiling *c, const node *n) | |
| 1709 { | |
| 1710 /* handle the full range of simple expressions | |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1711 test: or_test ['if' or_test 'else' test] | lambdef |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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41235
diff
changeset
|
1712 test_nocond: or_test | lambdef_nocond |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1713 or_test: and_test ('or' and_test)* |
| 35742 | 1714 and_test: not_test ('and' not_test)* |
| 1715 not_test: 'not' not_test | comparison | |
| 1716 comparison: expr (comp_op expr)* | |
| 1717 expr: xor_expr ('|' xor_expr)* | |
| 1718 xor_expr: and_expr ('^' and_expr)* | |
| 1719 and_expr: shift_expr ('&' shift_expr)* | |
| 1720 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1721 arith_expr: term (('+'|'-') term)* | |
| 1722 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1723 factor: ('+'|'-'|'~') factor | power | |
| 1724 power: atom trailer* ('**' factor)* | |
| 1725 */ | |
| 1726 | |
| 1727 asdl_seq *seq; | |
| 1728 int i; | |
| 1729 | |
| 1730 loop: | |
| 1731 switch (TYPE(n)) { | |
| 1732 case test: | |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1733 case test_nocond: |
|
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PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1734 if (TYPE(CHILD(n, 0)) == lambdef || |
|
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Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1735 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1736 return ast_for_lambdef(c, CHILD(n, 0)); |
|
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PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
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diff
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|
1737 else if (NCH(n) > 1) |
|
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PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
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diff
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|
1738 return ast_for_ifexpr(c, n); |
|
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1739 /* Fallthrough */ |
|
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|
1740 case or_test: |
| 35742 | 1741 case and_test: |
| 1742 if (NCH(n) == 1) { | |
| 1743 n = CHILD(n, 0); | |
| 1744 goto loop; | |
| 1745 } | |
|
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ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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|
1746 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1747 if (!seq) |
| 1748 return NULL; | |
| 1749 for (i = 0; i < NCH(n); i += 2) { | |
| 1750 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1751 if (!e) | |
| 1752 return NULL; | |
| 1753 asdl_seq_SET(seq, i / 2, e); | |
| 1754 } | |
| 1755 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
|
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f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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|
1756 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
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|
1757 c->c_arena); |
|
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de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
1758 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
|
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Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
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changeset
|
1759 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1760 case not_test: |
| 1761 if (NCH(n) == 1) { | |
| 1762 n = CHILD(n, 0); | |
| 1763 goto loop; | |
| 1764 } | |
| 1765 else { | |
| 1766 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1767 if (!expression) | |
| 1768 return NULL; | |
| 1769 | |
|
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f731859e9b3b
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|
1770 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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|
1771 c->c_arena); |
| 35742 | 1772 } |
| 1773 case comparison: | |
| 1774 if (NCH(n) == 1) { | |
| 1775 n = CHILD(n, 0); | |
| 1776 goto loop; | |
| 1777 } | |
| 1778 else { | |
| 1779 expr_ty expression; | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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parents:
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diff
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|
1780 asdl_int_seq *ops; |
|
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|
1781 asdl_seq *cmps; |
|
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f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1782 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1783 if (!ops) |
| 1784 return NULL; | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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parents:
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diff
changeset
|
1785 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1786 if (!cmps) { |
| 1787 return NULL; | |
| 1788 } | |
| 1789 for (i = 1; i < NCH(n); i += 2) { | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1790 cmpop_ty newoperator; |
| 35742 | 1791 |
|
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f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1792 newoperator = ast_for_comp_op(CHILD(n, i)); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
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changeset
|
1793 if (!newoperator) { |
| 35742 | 1794 return NULL; |
|
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changeset
|
1795 } |
| 35742 | 1796 |
| 1797 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
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changeset
|
1798 if (!expression) { |
| 35742 | 1799 return NULL; |
|
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|
1800 } |
| 35742 | 1801 |
|
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f731859e9b3b
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changeset
|
1802 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1803 asdl_seq_SET(cmps, i / 2, expression); |
| 1804 } | |
| 1805 expression = ast_for_expr(c, CHILD(n, 0)); | |
|
35873
76ed7fdc9d85
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Neal Norwitz <nnorwitz@gmail.com>
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changeset
|
1806 if (!expression) { |
| 35742 | 1807 return NULL; |
|
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|
1808 } |
| 35742 | 1809 |
|
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|
1810 return Compare(expression, ops, cmps, LINENO(n), |
|
f731859e9b3b
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|
1811 n->n_col_offset, c->c_arena); |
| 35742 | 1812 } |
| 1813 break; | |
| 1814 | |
|
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|
1815 case star_expr: |
|
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|
1816 if (TYPE(CHILD(n, 0)) == STAR) { |
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1817 return ast_for_starred(c, n); |
|
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|
1818 } |
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|
1819 /* Fallthrough */ |
| 35742 | 1820 /* The next five cases all handle BinOps. The main body of code |
| 1821 is the same in each case, but the switch turned inside out to | |
| 1822 reuse the code for each type of operator. | |
| 1823 */ | |
| 1824 case expr: | |
| 1825 case xor_expr: | |
| 1826 case and_expr: | |
| 1827 case shift_expr: | |
| 1828 case arith_expr: | |
| 1829 case term: | |
| 1830 if (NCH(n) == 1) { | |
| 1831 n = CHILD(n, 0); | |
| 1832 goto loop; | |
| 1833 } | |
| 1834 return ast_for_binop(c, n); | |
| 1835 case yield_expr: { | |
|
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|
1836 expr_ty exp = NULL; |
|
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|
1837 if (NCH(n) == 2) { |
|
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|
1838 exp = ast_for_testlist(c, CHILD(n, 1)); |
|
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|
1839 if (!exp) |
|
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|
1840 return NULL; |
|
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|
1841 } |
|
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|
1842 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1843 } |
|
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|
1844 case factor: |
| 35742 | 1845 if (NCH(n) == 1) { |
| 1846 n = CHILD(n, 0); | |
| 1847 goto loop; | |
| 1848 } | |
|
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|
1849 return ast_for_factor(c, n); |
|
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Refactor code for translating "power" nodes.
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diff
changeset
|
1850 case power: |
|
842caa245917
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parents:
35798
diff
changeset
|
1851 return ast_for_power(c, n); |
| 35742 | 1852 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
1853 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1854 return NULL; |
| 1855 } | |
|
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de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1856 /* should never get here unless if error is set */ |
| 35742 | 1857 return NULL; |
| 1858 } | |
| 1859 | |
| 1860 static expr_ty | |
| 1861 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1862 { | |
| 1863 /* | |
| 1864 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1865 | '**' test) | |
|
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41235
diff
changeset
|
1866 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1867 */ |
| 1868 | |
| 1869 int i, nargs, nkeywords, ngens; | |
|
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Neal Norwitz <nnorwitz@gmail.com>
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changeset
|
1870 asdl_seq *args; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1871 asdl_seq *keywords; |
| 35742 | 1872 expr_ty vararg = NULL, kwarg = NULL; |
| 1873 | |
| 1874 REQ(n, arglist); | |
| 1875 | |
| 1876 nargs = 0; | |
| 1877 nkeywords = 0; | |
| 1878 ngens = 0; | |
| 1879 for (i = 0; i < NCH(n); i++) { | |
|
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1880 node *ch = CHILD(n, i); |
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1881 if (TYPE(ch) == argument) { |
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1882 if (NCH(ch) == 1) |
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1883 nargs++; |
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1884 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1885 ngens++; |
| 35742 | 1886 else |
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1887 nkeywords++; |
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1888 } |
| 35742 | 1889 } |
| 1890 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
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1891 ast_error(n, "Generator expression must be parenthesized " |
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1892 "if not sole argument"); |
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1893 return NULL; |
| 35742 | 1894 } |
| 1895 | |
| 1896 if (nargs + nkeywords + ngens > 255) { | |
| 1897 ast_error(n, "more than 255 arguments"); | |
| 1898 return NULL; | |
| 1899 } | |
| 1900 | |
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1901 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1902 if (!args) |
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1903 return NULL; |
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1904 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1905 if (!keywords) |
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1906 return NULL; |
| 35742 | 1907 nargs = 0; |
| 1908 nkeywords = 0; | |
| 1909 for (i = 0; i < NCH(n); i++) { | |
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1910 node *ch = CHILD(n, i); |
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1911 if (TYPE(ch) == argument) { |
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1912 expr_ty e; |
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1913 if (NCH(ch) == 1) { |
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1914 if (nkeywords) { |
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1915 ast_error(CHILD(ch, 0), |
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1916 "non-keyword arg after keyword arg"); |
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1917 return NULL; |
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1918 } |
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1919 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1920 if (!e) |
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1921 return NULL; |
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1922 asdl_seq_SET(args, nargs++, e); |
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1923 } |
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1924 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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1925 e = ast_for_genexp(c, ch); |
| 35742 | 1926 if (!e) |
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1927 return NULL; |
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1928 asdl_seq_SET(args, nargs++, e); |
| 35742 | 1929 } |
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1930 else { |
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1931 keyword_ty kw; |
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1932 identifier key; |
| 35742 | 1933 |
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1934 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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1935 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1936 if (!e) |
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1937 return NULL; |
| 35742 | 1938 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1939 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 1940 * SF bug 132313 points out that complaining about a keyword | |
| 1941 * then is very confusing. | |
| 1942 */ | |
| 1943 if (e->kind == Lambda_kind) { | |
| 1944 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
|
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1945 return NULL; |
| 35742 | 1946 } else if (e->kind != Name_kind) { |
| 1947 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
|
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1948 return NULL; |
|
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1949 } else if (forbidden_name(e, ch)) { |
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1950 return NULL; |
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1951 } |
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1952 key = e->v.Name.id; |
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1953 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 1954 if (!e) |
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1955 return NULL; |
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1956 kw = keyword(key, e, c->c_arena); |
| 35742 | 1957 if (!kw) |
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1958 return NULL; |
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1959 asdl_seq_SET(keywords, nkeywords++, kw); |
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1960 } |
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1961 } |
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1962 else if (TYPE(ch) == STAR) { |
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1963 vararg = ast_for_expr(c, CHILD(n, i+1)); |
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1964 i++; |
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1965 } |
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1966 else if (TYPE(ch) == DOUBLESTAR) { |
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1967 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
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1968 i++; |
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1969 } |
| 35742 | 1970 } |
| 1971 | |
|
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1972 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 1973 } |
| 1974 | |
| 1975 static expr_ty | |
|
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1976 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 1977 { |
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1978 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
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1979 /* testlist: test (',' test)* [','] */ |
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1980 /* testlist1: test (',' test)* */ |
| 35742 | 1981 assert(NCH(n) > 0); |
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1982 if (TYPE(n) == testlist_comp) { |
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1983 if (NCH(n) > 1) |
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1984 assert(TYPE(CHILD(n, 1)) != comp_for); |
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1985 } |
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1986 else { |
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1987 assert(TYPE(n) == testlist || |
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1988 TYPE(n) == testlist1); |
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1989 } |
| 35742 | 1990 if (NCH(n) == 1) |
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1991 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 1992 else { |
| 1993 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 1994 if (!tmp) | |
| 1995 return NULL; | |
|
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1996 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1997 } |
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1998 } |
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1999 |
| 35742 | 2000 static stmt_ty |
| 2001 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2002 { | |
| 2003 REQ(n, expr_stmt); | |
| 2004 /* expr_stmt: testlist (augassign (yield_expr|testlist) | |
| 2005 | ('=' (yield_expr|testlist))*) | |
| 2006 testlist: test (',' test)* [','] | |
| 2007 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | |
|
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2008 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2009 test: ... here starts the operator precendence dance |
| 2010 */ | |
| 2011 | |
| 2012 if (NCH(n) == 1) { | |
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2013 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2014 if (!e) |
| 2015 return NULL; | |
| 2016 | |
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2017 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2018 } |
| 2019 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2020 expr_ty expr1, expr2; | |
|
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2021 operator_ty newoperator; |
|
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2022 node *ch = CHILD(n, 0); |
| 35742 | 2023 |
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2024 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2025 if (!expr1) |
| 2026 return NULL; | |
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2027 /* TODO(nas): Remove duplicated error checks (set_context does it) */ |
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2028 switch (expr1->kind) { |
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2029 case GeneratorExp_kind: |
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2030 ast_error(ch, "augmented assignment to generator " |
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2031 "expression not possible"); |
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2032 return NULL; |
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2033 case Yield_kind: |
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2034 ast_error(ch, "augmented assignment to yield " |
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2035 "expression not possible"); |
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2036 return NULL; |
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2037 case Name_kind: { |
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2038 if (forbidden_name(expr1, ch)) |
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changeset
|
2039 return NULL; |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
2040 break; |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
2041 } |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
2042 case Attribute_kind: |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
2043 case Subscript_kind: |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
2044 break; |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
2045 default: |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
2046 ast_error(ch, "illegal expression for augmented " |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
2047 "assignment"); |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
2048 return NULL; |
| 35742 | 2049 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2050 set_context(expr1, Store, ch); |
| 35742 | 2051 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2052 ch = CHILD(n, 2); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2053 if (TYPE(ch) == testlist) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2054 expr2 = ast_for_testlist(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2055 else |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2056 expr2 = ast_for_expr(c, ch); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2057 if (!expr2) |
| 35742 | 2058 return NULL; |
| 2059 | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2060 newoperator = ast_for_augassign(CHILD(n, 1)); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2061 if (!newoperator) |
| 35742 | 2062 return NULL; |
| 2063 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2064 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2065 } |
| 2066 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2067 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2068 asdl_seq *targets; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2069 node *value; |
| 35742 | 2070 expr_ty expression; |
| 2071 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2072 /* a normal assignment */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2073 REQ(CHILD(n, 1), EQUAL); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2074 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2075 if (!targets) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2076 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2077 for (i = 0; i < NCH(n) - 2; i += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2078 expr_ty e; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2079 node *ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2080 if (TYPE(ch) == yield_expr) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2081 ast_error(ch, "assignment to yield expression not possible"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2082 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2083 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2084 e = ast_for_testlist(c, ch); |
| 35742 | 2085 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2086 /* set context to assign */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2087 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2088 return NULL; |
| 35742 | 2089 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2090 if (!set_context(e, Store, CHILD(n, i))) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2091 return NULL; |
| 35742 | 2092 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2093 asdl_seq_SET(targets, i / 2, e); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2094 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2095 value = CHILD(n, NCH(n) - 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2096 if (TYPE(value) == testlist) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2097 expression = ast_for_testlist(c, value); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2098 else |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2099 expression = ast_for_expr(c, value); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2100 if (!expression) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2101 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2102 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2103 } |
| 2104 } | |
| 2105 | |
| 2106 static asdl_seq * | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2107 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2108 { |
| 2109 asdl_seq *seq; | |
| 2110 int i; | |
| 2111 expr_ty e; | |
| 2112 | |
| 2113 REQ(n, exprlist); | |
| 2114 | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2115 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2116 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2117 return NULL; |
| 35742 | 2118 for (i = 0; i < NCH(n); i += 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2119 e = ast_for_expr(c, CHILD(n, i)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2120 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2121 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2122 asdl_seq_SET(seq, i / 2, e); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2123 if (context && !set_context(e, context, CHILD(n, i))) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2124 return NULL; |
| 35742 | 2125 } |
| 2126 return seq; | |
| 2127 } | |
| 2128 | |
| 2129 static stmt_ty | |
| 2130 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2131 { | |
| 2132 asdl_seq *expr_list; | |
| 2133 | |
| 2134 /* del_stmt: 'del' exprlist */ | |
| 2135 REQ(n, del_stmt); | |
| 2136 | |
| 2137 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2138 if (!expr_list) | |
| 2139 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2140 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2141 } |
| 2142 | |
| 2143 static stmt_ty | |
| 2144 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2145 { | |
| 2146 /* | |
| 2147 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2148 | yield_stmt | |
| 2149 break_stmt: 'break' | |
| 2150 continue_stmt: 'continue' | |
| 2151 return_stmt: 'return' [testlist] | |
| 2152 yield_stmt: yield_expr | |
| 2153 yield_expr: 'yield' testlist | |
| 2154 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2155 */ | |
| 2156 node *ch; | |
| 2157 | |
| 2158 REQ(n, flow_stmt); | |
| 2159 ch = CHILD(n, 0); | |
| 2160 switch (TYPE(ch)) { | |
| 2161 case break_stmt: | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2162 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2163 case continue_stmt: |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2164 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2165 case yield_stmt: { /* will reduce to yield_expr */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2166 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2167 if (!exp) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2168 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2169 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2170 } |
| 2171 case return_stmt: | |
| 2172 if (NCH(ch) == 1) | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2173 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2174 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2175 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2176 if (!expression) |
| 2177 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2178 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2179 } |
| 2180 case raise_stmt: | |
| 2181 if (NCH(ch) == 1) | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2182 return Raise(NULL, NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2183 else if (NCH(ch) == 2) { |
| 2184 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); | |
| 2185 if (!expression) | |
| 2186 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2187 return Raise(expression, NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2188 } |
| 2189 else if (NCH(ch) == 4) { | |
| 2190 expr_ty expr1, expr2; | |
| 2191 | |
| 2192 expr1 = ast_for_expr(c, CHILD(ch, 1)); | |
| 2193 if (!expr1) | |
| 2194 return NULL; | |
| 2195 expr2 = ast_for_expr(c, CHILD(ch, 3)); | |
| 2196 if (!expr2) | |
| 2197 return NULL; | |
| 2198 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2199 return Raise(expr1, expr2, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2200 } |
| 2201 else if (NCH(ch) == 6) { | |
| 2202 expr_ty expr1, expr2, expr3; | |
| 2203 | |
| 2204 expr1 = ast_for_expr(c, CHILD(ch, 1)); | |
| 2205 if (!expr1) | |
| 2206 return NULL; | |
| 2207 expr2 = ast_for_expr(c, CHILD(ch, 3)); | |
| 2208 if (!expr2) | |
| 2209 return NULL; | |
| 2210 expr3 = ast_for_expr(c, CHILD(ch, 5)); | |
| 2211 if (!expr3) | |
| 2212 return NULL; | |
| 2213 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2214 return Raise(expr1, expr2, expr3, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2215 } |
| 2216 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2217 PyErr_Format(PyExc_SystemError, |
| 35742 | 2218 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2219 return NULL; | |
| 2220 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2221 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2222 PyErr_SetString(PyExc_SystemError, "unhandled flow statement"); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2223 return NULL; |
| 35742 | 2224 } |
| 2225 | |
| 2226 static alias_ty | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2227 alias_for_import_name(struct compiling *c, const node *n) |
| 35742 | 2228 { |
| 2229 /* | |
|
36742
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
36718
diff
changeset
|
2230 import_as_name: NAME ['as' NAME] |
|
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
36718
diff
changeset
|
2231 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2232 dotted_name: NAME ('.' NAME)* |
| 2233 */ | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2234 PyObject *str; |
|
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2235 |
| 35742 | 2236 loop: |
| 2237 switch (TYPE(n)) { | |
| 2238 case import_as_name: | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2239 str = NULL; |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2240 if (NCH(n) == 3) { |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2241 str = NEW_IDENTIFIER(CHILD(n, 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2242 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2243 return alias(NEW_IDENTIFIER(CHILD(n, 0)), str, c->c_arena); |
| 35742 | 2244 case dotted_as_name: |
| 2245 if (NCH(n) == 1) { | |
| 2246 n = CHILD(n, 0); | |
| 2247 goto loop; | |
| 2248 } | |
| 2249 else { | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2250 alias_ty a = alias_for_import_name(c, CHILD(n, 0)); |
|
39610
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2251 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2252 return NULL; |
| 35742 | 2253 assert(!a->asname); |
| 2254 a->asname = NEW_IDENTIFIER(CHILD(n, 2)); | |
| 2255 return a; | |
| 2256 } | |
| 2257 break; | |
| 2258 case dotted_name: | |
| 2259 if (NCH(n) == 1) | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2260 return alias(NEW_IDENTIFIER(CHILD(n, 0)), NULL, c->c_arena); |
| 35742 | 2261 else { |
| 2262 /* Create a string of the form "a.b.c" */ | |
|
36242
0f5189607264
Repair bizarre indentation created by VC 7.1.
Tim Peters <tim.peters@gmail.com>
parents:
36241
diff
changeset
|
2263 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2264 size_t len; |
| 35742 | 2265 char *s; |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2266 PyObject *uni; |
| 35742 | 2267 |
| 2268 len = 0; | |
| 2269 for (i = 0; i < NCH(n); i += 2) | |
| 2270 /* length of string plus one for the dot */ | |
| 2271 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2272 len--; /* the last name doesn't have a dot */ | |
| 2273 str = PyString_FromStringAndSize(NULL, len); | |
| 2274 if (!str) | |
| 2275 return NULL; | |
| 2276 s = PyString_AS_STRING(str); | |
| 2277 if (!s) | |
| 2278 return NULL; | |
| 2279 for (i = 0; i < NCH(n); i += 2) { | |
| 2280 char *sch = STR(CHILD(n, i)); | |
| 2281 strcpy(s, STR(CHILD(n, i))); | |
| 2282 s += strlen(sch); | |
| 2283 *s++ = '.'; | |
| 2284 } | |
| 2285 --s; | |
| 2286 *s = '\0'; | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2287 uni = PyUnicode_DecodeUTF8(PyString_AS_STRING(str), |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2288 PyString_GET_SIZE(str), |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2289 NULL); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2290 Py_DECREF(str); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2291 if (!uni) |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2292 return NULL; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2293 str = uni; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2294 PyUnicode_InternInPlace(&str); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2295 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2296 return alias(str, NULL, c->c_arena); |
| 35742 | 2297 } |
| 2298 break; | |
| 2299 case STAR: | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2300 str = PyUnicode_InternFromString("*"); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2301 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2302 return alias(str, NULL, c->c_arena); |
| 35742 | 2303 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2304 PyErr_Format(PyExc_SystemError, |
| 35742 | 2305 "unexpected import name: %d", TYPE(n)); |
| 2306 return NULL; | |
| 2307 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2308 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2309 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2310 return NULL; |
| 2311 } | |
| 2312 | |
| 2313 static stmt_ty | |
| 2314 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2315 { | |
| 2316 /* | |
| 2317 import_stmt: import_name | import_from | |
| 2318 import_name: 'import' dotted_as_names | |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2319 import_from: 'from' (('.' | '...')* dotted_name | ('.' | '...')+) |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2320 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2321 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2322 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2323 int col_offset; |
| 35742 | 2324 int i; |
| 2325 asdl_seq *aliases; | |
| 2326 | |
| 2327 REQ(n, import_stmt); | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2328 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2329 col_offset = n->n_col_offset; |
| 35742 | 2330 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2331 if (TYPE(n) == import_name) { |
| 35742 | 2332 n = CHILD(n, 1); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2333 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2334 aliases = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2335 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2336 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2337 for (i = 0; i < NCH(n); i += 2) { |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2338 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i)); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2339 if (!import_alias) |
| 35742 | 2340 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2341 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2342 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2343 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2344 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2345 else if (TYPE(n) == import_from) { |
| 35742 | 2346 int n_children; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2347 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2348 alias_ty mod = NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2349 identifier modname; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2350 |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2351 /* Count the number of dots (for relative imports) and check for the |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2352 optional module name */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2353 for (idx = 1; idx < NCH(n); idx++) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2354 if (TYPE(CHILD(n, idx)) == dotted_name) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2355 mod = alias_for_import_name(c, CHILD(n, idx)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2356 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2357 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2358 } else if (TYPE(CHILD(n, idx)) == ELLIPSIS) { |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2359 /* three consecutive dots are tokenized as one ELLIPSIS */ |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2360 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2361 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2362 } else if (TYPE(CHILD(n, idx)) != DOT) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2363 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2364 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2365 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2366 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2367 idx++; /* skip over the 'import' keyword */ |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2368 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2369 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2370 /* from ... import * */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2371 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2372 n_children = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2373 if (ndots) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2374 ast_error(n, "'import *' not allowed with 'from .'"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2375 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2376 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2377 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2378 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2379 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2380 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2381 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2382 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2383 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2384 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2385 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2386 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2387 if (n_children % 2 == 0) { |
| 35742 | 2388 ast_error(n, "trailing comma not allowed without" |
| 2389 " surrounding parentheses"); | |
| 2390 return NULL; | |
| 2391 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2392 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2393 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2394 ast_error(n, "Unexpected node-type in from-import"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2395 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2396 } |
| 35742 | 2397 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2398 aliases = asdl_seq_new((n_children + 1) / 2, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2399 if (!aliases) |
| 35742 | 2400 return NULL; |
| 2401 | |
| 2402 /* handle "from ... import *" special b/c there's no children */ | |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2403 if (TYPE(n) == STAR) { |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2404 alias_ty import_alias = alias_for_import_name(c, n); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2405 if (!import_alias) |
| 35742 | 2406 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2407 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2408 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2409 else { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2410 for (i = 0; i < NCH(n); i += 2) { |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2411 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i)); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2412 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2413 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2414 asdl_seq_SET(aliases, i / 2, import_alias); |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2415 } |
| 35742 | 2416 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2417 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2418 modname = mod->name; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2419 else |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2420 modname = new_identifier("", c->c_arena); |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2421 return ImportFrom(modname, aliases, ndots, lineno, col_offset, |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2422 c->c_arena); |
| 35742 | 2423 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2424 PyErr_Format(PyExc_SystemError, |
| 35742 | 2425 "unknown import statement: starts with command '%s'", |
| 2426 STR(CHILD(n, 0))); | |
| 2427 return NULL; | |
| 2428 } | |
| 2429 | |
| 2430 static stmt_ty | |
| 2431 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2432 { | |
| 2433 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2434 identifier name; | |
| 2435 asdl_seq *s; | |
| 2436 int i; | |
| 2437 | |
| 2438 REQ(n, global_stmt); | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2439 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2440 if (!s) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2441 return NULL; |
| 35742 | 2442 for (i = 1; i < NCH(n); i += 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2443 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2444 if (!name) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2445 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2446 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2447 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2448 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2449 } |
| 2450 | |
| 2451 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2452 ast_for_nonlocal_stmt(struct compiling *c, const node *n) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2453 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2454 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2455 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2456 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2457 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2458 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2459 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2460 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2461 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2462 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2463 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2464 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2465 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2466 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2467 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2468 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2469 return Nonlocal(s, LINENO(n), n->n_col_offset, c->c_arena); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2470 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2471 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2472 static stmt_ty |
| 35742 | 2473 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2474 { | |
| 2475 /* assert_stmt: 'assert' test [',' test] */ | |
| 2476 REQ(n, assert_stmt); | |
| 2477 if (NCH(n) == 2) { | |
| 2478 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2479 if (!expression) | |
| 2480 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2481 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2482 } |
| 2483 else if (NCH(n) == 4) { | |
| 2484 expr_ty expr1, expr2; | |
| 2485 | |
| 2486 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2487 if (!expr1) | |
| 2488 return NULL; | |
| 2489 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2490 if (!expr2) | |
| 2491 return NULL; | |
| 2492 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2493 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2494 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2495 PyErr_Format(PyExc_SystemError, |
| 35742 | 2496 "improper number of parts to 'assert' statement: %d", |
| 2497 NCH(n)); | |
| 2498 return NULL; | |
| 2499 } | |
| 2500 | |
| 2501 static asdl_seq * | |
| 2502 ast_for_suite(struct compiling *c, const node *n) | |
| 2503 { | |
| 2504 /* suite: simple_stmt | NEWLINE INDENT stmt+ DEDENT */ | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2505 asdl_seq *seq; |
| 35742 | 2506 stmt_ty s; |
| 2507 int i, total, num, end, pos = 0; | |
| 2508 node *ch; | |
| 2509 | |
| 2510 REQ(n, suite); | |
| 2511 | |
| 2512 total = num_stmts(n); | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2513 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2514 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2515 return NULL; |
| 35742 | 2516 if (TYPE(CHILD(n, 0)) == simple_stmt) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2517 n = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2518 /* simple_stmt always ends with a NEWLINE, |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2519 and may have a trailing SEMI |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2520 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2521 end = NCH(n) - 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2522 if (TYPE(CHILD(n, end - 1)) == SEMI) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2523 end--; |
| 35742 | 2524 /* loop by 2 to skip semi-colons */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2525 for (i = 0; i < end; i += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2526 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2527 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2528 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2529 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2530 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2531 } |
| 35742 | 2532 } |
| 2533 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2534 for (i = 2; i < (NCH(n) - 1); i++) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2535 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2536 REQ(ch, stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2537 num = num_stmts(ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2538 if (num == 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2539 /* small_stmt or compound_stmt with only one child */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2540 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2541 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2542 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2543 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2544 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2545 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2546 int j; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2547 ch = CHILD(ch, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2548 REQ(ch, simple_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2549 for (j = 0; j < NCH(ch); j += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2550 /* statement terminates with a semi-colon ';' */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2551 if (NCH(CHILD(ch, j)) == 0) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2552 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2553 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2554 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2555 s = ast_for_stmt(c, CHILD(ch, j)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2556 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2557 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2558 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2559 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2560 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2561 } |
| 35742 | 2562 } |
| 2563 assert(pos == seq->size); | |
| 2564 return seq; | |
| 2565 } | |
| 2566 | |
| 2567 static stmt_ty | |
| 2568 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2569 { | |
| 2570 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2571 ['else' ':' suite] | |
| 2572 */ | |
| 2573 char *s; | |
| 2574 | |
| 2575 REQ(n, if_stmt); | |
| 2576 | |
| 2577 if (NCH(n) == 4) { | |
| 2578 expr_ty expression; | |
| 2579 asdl_seq *suite_seq; | |
| 2580 | |
| 2581 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2582 if (!expression) | |
| 2583 return NULL; | |
| 2584 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2585 if (!suite_seq) |
| 35742 | 2586 return NULL; |
| 2587 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2588 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, |
|
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|
2589 c->c_arena); |
| 35742 | 2590 } |
|
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|
2591 |
| 35742 | 2592 s = STR(CHILD(n, 4)); |
| 2593 /* s[2], the third character in the string, will be | |
| 2594 's' for el_s_e, or | |
| 2595 'i' for el_i_f | |
| 2596 */ | |
| 2597 if (s[2] == 's') { | |
| 2598 expr_ty expression; | |
| 2599 asdl_seq *seq1, *seq2; | |
| 2600 | |
| 2601 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2602 if (!expression) | |
| 2603 return NULL; | |
| 2604 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2605 if (!seq1) |
| 35742 | 2606 return NULL; |
| 2607 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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|
2608 if (!seq2) |
| 35742 | 2609 return NULL; |
| 2610 | |
|
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2611 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, |
|
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|
2612 c->c_arena); |
| 35742 | 2613 } |
| 2614 else if (s[2] == 'i') { | |
|
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|
2615 int i, n_elif, has_else = 0; |
|
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|
2616 expr_ty expression; |
|
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|
2617 asdl_seq *suite_seq; |
|
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2618 asdl_seq *orelse = NULL; |
|
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|
2619 n_elif = NCH(n) - 4; |
| 35742 | 2620 /* must reference the child n_elif+1 since 'else' token is third, |
| 2621 not fourth, child from the end. */ | |
|
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2622 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
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|
2623 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
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2624 has_else = 1; |
|
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2625 n_elif -= 3; |
|
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|
2626 } |
|
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|
2627 n_elif /= 4; |
| 35742 | 2628 |
|
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|
2629 if (has_else) { |
|
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|
2630 asdl_seq *suite_seq2; |
| 35742 | 2631 |
|
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2632 orelse = asdl_seq_new(1, c->c_arena); |
|
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2633 if (!orelse) |
|
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2634 return NULL; |
| 35742 | 2635 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
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2636 if (!expression) |
| 35742 | 2637 return NULL; |
|
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|
2638 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
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|
2639 if (!suite_seq) |
|
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|
2640 return NULL; |
|
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|
2641 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
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2642 if (!suite_seq2) |
| 35742 | 2643 return NULL; |
| 2644 | |
|
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|
2645 asdl_seq_SET(orelse, 0, |
|
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|
2646 If(expression, suite_seq, suite_seq2, |
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|
2647 LINENO(CHILD(n, NCH(n) - 6)), |
|
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2648 CHILD(n, NCH(n) - 6)->n_col_offset, |
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|
2649 c->c_arena)); |
|
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2650 /* the just-created orelse handled the last elif */ |
|
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|
2651 n_elif--; |
|
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|
2652 } |
| 35742 | 2653 |
|
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2654 for (i = 0; i < n_elif; i++) { |
|
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|
2655 int off = 5 + (n_elif - i - 1) * 4; |
|
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|
2656 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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2657 if (!newobj) |
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|
2658 return NULL; |
| 35742 | 2659 expression = ast_for_expr(c, CHILD(n, off)); |
|
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|
2660 if (!expression) |
| 35742 | 2661 return NULL; |
| 2662 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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|
2663 if (!suite_seq) |
| 35742 | 2664 return NULL; |
| 2665 | |
|
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2666 asdl_seq_SET(newobj, 0, |
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2667 If(expression, suite_seq, orelse, |
|
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|
2668 LINENO(CHILD(n, off)), |
|
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|
2669 CHILD(n, off)->n_col_offset, c->c_arena)); |
|
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|
2670 orelse = newobj; |
|
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2671 } |
|
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|
2672 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
2673 if (!expression) |
|
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|
2674 return NULL; |
|
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|
2675 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
|
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|
2676 if (!suite_seq) |
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|
2677 return NULL; |
|
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|
2678 return If(expression, suite_seq, orelse, |
|
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|
2679 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2680 } |
|
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Cleanup a bit and make things more consistent.
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|
2681 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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changeset
|
2682 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
2683 "unexpected token in 'if' statement: %s", s); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2684 return NULL; |
| 35742 | 2685 } |
| 2686 | |
| 2687 static stmt_ty | |
| 2688 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2689 { | |
| 2690 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2691 REQ(n, while_stmt); | |
| 2692 | |
| 2693 if (NCH(n) == 4) { | |
| 2694 expr_ty expression; | |
| 2695 asdl_seq *suite_seq; | |
| 2696 | |
| 2697 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2698 if (!expression) | |
| 2699 return NULL; | |
| 2700 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2701 if (!suite_seq) |
| 35742 | 2702 return NULL; |
|
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|
2703 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2704 } |
| 2705 else if (NCH(n) == 7) { | |
| 2706 expr_ty expression; | |
| 2707 asdl_seq *seq1, *seq2; | |
| 2708 | |
| 2709 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2710 if (!expression) | |
| 2711 return NULL; | |
| 2712 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2713 if (!seq1) |
| 35742 | 2714 return NULL; |
| 2715 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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changeset
|
2716 if (!seq2) |
| 35742 | 2717 return NULL; |
| 2718 | |
|
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|
2719 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2720 } |
|
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Cleanup a bit and make things more consistent.
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|
2721 |
|
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diff
changeset
|
2722 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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diff
changeset
|
2723 "wrong number of tokens for 'while' statement: %d", |
|
de16a85c3b4c
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diff
changeset
|
2724 NCH(n)); |
|
de16a85c3b4c
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diff
changeset
|
2725 return NULL; |
| 35742 | 2726 } |
| 2727 | |
| 2728 static stmt_ty | |
| 2729 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2730 { | |
|
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|
2731 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2732 expr_ty expression; |
| 2733 expr_ty target; | |
|
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|
2734 const node *node_target; |
| 35742 | 2735 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2736 REQ(n, for_stmt); | |
| 2737 | |
| 2738 if (NCH(n) == 9) { | |
|
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|
2739 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2740 if (!seq) |
| 2741 return NULL; | |
| 2742 } | |
| 2743 | |
|
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|
2744 node_target = CHILD(n, 1); |
|
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|
2745 _target = ast_for_exprlist(c, node_target, Store); |
|
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|
2746 if (!_target) |
| 35742 | 2747 return NULL; |
|
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|
2748 /* Check the # of children rather than the length of _target, since |
|
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|
2749 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2750 if (NCH(node_target) == 1) |
|
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|
2751 target = (expr_ty)asdl_seq_GET(_target, 0); |
| 35742 | 2752 else |
|
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|
2753 target = Tuple(_target, Store, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2754 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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35771
diff
changeset
|
2755 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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changeset
|
2756 if (!expression) |
| 35742 | 2757 return NULL; |
| 2758 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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changeset
|
2759 if (!suite_seq) |
| 35742 | 2760 return NULL; |
| 2761 | |
|
37879
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2762 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2763 c->c_arena); |
| 35742 | 2764 } |
| 2765 | |
| 2766 static excepthandler_ty | |
| 2767 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2768 { | |
|
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diff
changeset
|
2769 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2770 REQ(exc, except_clause); |
| 2771 REQ(body, suite); | |
| 2772 | |
| 2773 if (NCH(exc) == 1) { | |
| 2774 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2775 if (!suite_seq) | |
| 2776 return NULL; | |
| 2777 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2778 return excepthandler(NULL, NULL, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2779 exc->n_col_offset, c->c_arena); |
| 35742 | 2780 } |
| 2781 else if (NCH(exc) == 2) { | |
| 2782 expr_ty expression; | |
| 2783 asdl_seq *suite_seq; | |
| 2784 | |
| 2785 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2786 if (!expression) | |
| 2787 return NULL; | |
| 2788 suite_seq = ast_for_suite(c, body); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2789 if (!suite_seq) |
| 35742 | 2790 return NULL; |
| 2791 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2792 return excepthandler(expression, NULL, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2793 exc->n_col_offset, c->c_arena); |
| 35742 | 2794 } |
| 2795 else if (NCH(exc) == 4) { | |
| 2796 asdl_seq *suite_seq; | |
| 2797 expr_ty expression; | |
|
40588
4bab65fcca8e
Some more changes related to the new except syntax and semantics,
Guido van Rossum <guido@python.org>
parents:
40529
diff
changeset
|
2798 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2799 if (!e) |
| 35742 | 2800 return NULL; |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2801 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2802 if (!expression) |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2803 return NULL; |
| 35742 | 2804 suite_seq = ast_for_suite(c, body); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2805 if (!suite_seq) |
| 35742 | 2806 return NULL; |
| 2807 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2808 return excepthandler(expression, e, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2809 exc->n_col_offset, c->c_arena); |
| 35742 | 2810 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2811 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2812 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2813 "wrong number of children for 'except' clause: %d", |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2814 NCH(exc)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2815 return NULL; |
| 35742 | 2816 } |
| 2817 | |
| 2818 static stmt_ty | |
| 2819 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2820 { | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2821 const int nch = NCH(n); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2822 int n_except = (nch - 3)/3; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2823 asdl_seq *body, *orelse = NULL, *finally = NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2824 |
| 35742 | 2825 REQ(n, try_stmt); |
| 2826 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2827 body = ast_for_suite(c, CHILD(n, 2)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2828 if (body == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2829 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2830 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2831 if (TYPE(CHILD(n, nch - 3)) == NAME) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2832 if (strcmp(STR(CHILD(n, nch - 3)), "finally") == 0) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2833 if (nch >= 9 && TYPE(CHILD(n, nch - 6)) == NAME) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2834 /* we can assume it's an "else", |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2835 because nch >= 9 for try-else-finally and |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2836 it would otherwise have a type of except_clause */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2837 orelse = ast_for_suite(c, CHILD(n, nch - 4)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2838 if (orelse == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2839 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2840 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2841 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2842 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2843 finally = ast_for_suite(c, CHILD(n, nch - 1)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2844 if (finally == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2845 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2846 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2847 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2848 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2849 /* we can assume it's an "else", |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2850 otherwise it would have a type of except_clause */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2851 orelse = ast_for_suite(c, CHILD(n, nch - 1)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2852 if (orelse == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2853 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2854 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2855 } |
| 35742 | 2856 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2857 else if (TYPE(CHILD(n, nch - 3)) != except_clause) { |
|
35867
f4842f42700b
remove useless debug print helper. fix a couple of exceptions
Neal Norwitz <nnorwitz@gmail.com>
parents:
35799
diff
changeset
|
2858 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2859 return NULL; |
| 2860 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2861 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2862 if (n_except > 0) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2863 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2864 stmt_ty except_st; |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2865 /* process except statements to create a try ... except */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2866 asdl_seq *handlers = asdl_seq_new(n_except, c->c_arena); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2867 if (handlers == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2868 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2869 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2870 for (i = 0; i < n_except; i++) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2871 excepthandler_ty e = ast_for_except_clause(c, CHILD(n, 3 + i * 3), |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2872 CHILD(n, 5 + i * 3)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2873 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2874 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2875 asdl_seq_SET(handlers, i, e); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2876 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2877 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2878 except_st = TryExcept(body, handlers, orelse, LINENO(n), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2879 n->n_col_offset, c->c_arena); |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2880 if (!finally) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2881 return except_st; |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2882 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2883 /* if a 'finally' is present too, we nest the TryExcept within a |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2884 TryFinally to emulate try ... except ... finally */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2885 body = asdl_seq_new(1, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2886 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2887 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2888 asdl_seq_SET(body, 0, except_st); |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2889 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2890 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2891 /* must be a try ... finally (except clauses are in body, if any exist) */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2892 assert(finally != NULL); |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2893 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2894 } |
| 2895 | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2896 static expr_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2897 ast_for_with_var(struct compiling *c, const node *n) |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2898 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2899 REQ(n, with_var); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2900 return ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2901 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2902 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2903 /* with_stmt: 'with' test [ with_var ] ':' suite */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2904 static stmt_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2905 ast_for_with_stmt(struct compiling *c, const node *n) |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2906 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2907 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2908 int suite_index = 3; /* skip 'with', test, and ':' */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2909 asdl_seq *suite_seq; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2910 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2911 assert(TYPE(n) == with_stmt); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2912 context_expr = ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2913 if (TYPE(CHILD(n, 2)) == with_var) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2914 optional_vars = ast_for_with_var(c, CHILD(n, 2)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2915 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2916 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2917 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2918 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2919 if (!set_context(optional_vars, Store, n)) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2920 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2921 } |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2922 suite_index = 4; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2923 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2924 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2925 suite_seq = ast_for_suite(c, CHILD(n, suite_index)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2926 if (!suite_seq) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2927 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2928 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2929 return With(context_expr, optional_vars, suite_seq, LINENO(n), |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2930 n->n_col_offset, c->c_arena); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2931 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2932 |
| 35742 | 2933 static stmt_ty |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2934 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 2935 { |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2936 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2937 asdl_seq *s; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2938 expr_ty call, dummy; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2939 |
| 35742 | 2940 REQ(n, classdef); |
| 2941 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2942 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 2943 s = ast_for_suite(c, CHILD(n, 3)); |
| 2944 if (!s) | |
| 2945 return NULL; | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2946 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2947 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2948 } |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2949 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2950 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2951 s = ast_for_suite(c, CHILD(n,5)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2952 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2953 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2954 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2955 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2956 } |
| 2957 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2958 /* class NAME '(' arglist ')' ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2959 /* build up a fake Call node so we can extract its pieces */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2960 dummy = Name(NEW_IDENTIFIER(CHILD(n, 1)), Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2961 call = ast_for_call(c, CHILD(n, 3), dummy); |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2962 if (!call) |
| 35742 | 2963 return NULL; |
| 2964 s = ast_for_suite(c, CHILD(n, 6)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2965 if (!s) |
| 35742 | 2966 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2967 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2968 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2969 call->v.Call.args, call->v.Call.keywords, |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2970 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2971 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2972 } |
| 2973 | |
| 2974 static stmt_ty | |
| 2975 ast_for_stmt(struct compiling *c, const node *n) | |
| 2976 { | |
| 2977 if (TYPE(n) == stmt) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2978 assert(NCH(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2979 n = CHILD(n, 0); |
| 35742 | 2980 } |
| 2981 if (TYPE(n) == simple_stmt) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2982 assert(num_stmts(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2983 n = CHILD(n, 0); |
| 35742 | 2984 } |
| 2985 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
2986 REQ(n, small_stmt); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
2987 n = CHILD(n, 0); |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2988 /* small_stmt: expr_stmt | del_stmt | pass_stmt | flow_stmt |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2989 | import_stmt | global_stmt | nonlocal_stmt | assert_stmt |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2990 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2991 switch (TYPE(n)) { |
| 35742 | 2992 case expr_stmt: |
| 2993 return ast_for_expr_stmt(c, n); | |
| 2994 case del_stmt: | |
| 2995 return ast_for_del_stmt(c, n); | |
| 2996 case pass_stmt: | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2997 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2998 case flow_stmt: |
| 2999 return ast_for_flow_stmt(c, n); | |
| 3000 case import_stmt: | |
| 3001 return ast_for_import_stmt(c, n); | |
| 3002 case global_stmt: | |
| 3003 return ast_for_global_stmt(c, n); | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3004 case nonlocal_stmt: |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3005 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3006 case assert_stmt: |
| 3007 return ast_for_assert_stmt(c, n); | |
| 3008 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3009 PyErr_Format(PyExc_SystemError, |
| 35742 | 3010 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3011 TYPE(n), NCH(n)); | |
| 3012 return NULL; | |
| 3013 } | |
| 3014 } | |
| 3015 else { | |
| 3016 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3017 | funcdef | classdef | decorated |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3018 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3019 node *ch = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3020 REQ(n, compound_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3021 switch (TYPE(ch)) { |
| 35742 | 3022 case if_stmt: |
| 3023 return ast_for_if_stmt(c, ch); | |
| 3024 case while_stmt: | |
| 3025 return ast_for_while_stmt(c, ch); | |
| 3026 case for_stmt: | |
| 3027 return ast_for_for_stmt(c, ch); | |
| 3028 case try_stmt: | |
| 3029 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3030 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3031 return ast_for_with_stmt(c, ch); |
| 35742 | 3032 case funcdef: |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3033 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3034 case classdef: |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3035 return ast_for_classdef(c, ch, NULL); |
|
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3036 case decorated: |
|
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3037 return ast_for_decorated(c, ch); |
| 35742 | 3038 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3039 PyErr_Format(PyExc_SystemError, |
| 35742 | 3040 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3041 TYPE(n), NCH(n)); | |
| 3042 return NULL; | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3043 } |
| 35742 | 3044 } |
| 3045 } | |
| 3046 | |
| 3047 static PyObject * | |
| 3048 parsenumber(const char *s) | |
| 3049 { | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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41509
diff
changeset
|
3050 const char *end; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
3051 long x; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
3052 double dx; |
| 35742 | 3053 #ifndef WITHOUT_COMPLEX |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
3054 Py_complex c; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
3055 int imflag; |
| 35742 | 3056 #endif |
| 3057 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
3058 errno = 0; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
3059 end = s + strlen(s) - 1; |
| 35742 | 3060 #ifndef WITHOUT_COMPLEX |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
3061 imflag = *end == 'j' || *end == 'J'; |
| 35742 | 3062 #endif |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
3063 if (s[0] == '0') { |
|
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|
3064 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
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|
3065 if (x < 0 && errno == 0) { |
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|
3066 return PyLong_FromString((char *)s, |
|
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|
3067 (char **)0, |
|
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|
3068 0); |
|
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|
3069 } |
|
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|
3070 } |
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|
3071 else |
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|
3072 x = PyOS_strtol((char *)s, (char **)&end, 0); |
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|
3073 if (*end == '\0') { |
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3074 if (errno != 0) |
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3075 return PyLong_FromString((char *)s, (char **)0, 0); |
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3076 return PyInt_FromLong(x); |
|
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3077 } |
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|
3078 /* XXX Huge floats may silently fail */ |
| 35742 | 3079 #ifndef WITHOUT_COMPLEX |
|
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3080 if (imflag) { |
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3081 c.real = 0.; |
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|
3082 PyFPE_START_PROTECT("atof", return 0) |
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3083 c.imag = PyOS_ascii_atof(s); |
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3084 PyFPE_END_PROTECT(c) |
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3085 return PyComplex_FromCComplex(c); |
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3086 } |
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3087 else |
| 35742 | 3088 #endif |
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3089 { |
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3090 PyFPE_START_PROTECT("atof", return 0) |
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3091 dx = PyOS_ascii_atof(s); |
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3092 PyFPE_END_PROTECT(dx) |
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3093 return PyFloat_FromDouble(dx); |
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3094 } |
| 35742 | 3095 } |
| 3096 | |
| 3097 static PyObject * | |
| 3098 decode_utf8(const char **sPtr, const char *end, char* encoding) | |
| 3099 { | |
|
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3100 PyObject *u, *v; |
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3101 char *s, *t; |
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3102 t = s = (char *)*sPtr; |
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3103 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
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3104 while (s < end && (*s & 0x80)) s++; |
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3105 *sPtr = s; |
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3106 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
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3107 if (u == NULL) |
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3108 return NULL; |
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3109 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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3110 Py_DECREF(u); |
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3111 return v; |
| 35742 | 3112 } |
| 3113 | |
| 3114 static PyObject * | |
| 3115 decode_unicode(const char *s, size_t len, int rawmode, const char *encoding) | |
| 3116 { | |
|
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3117 PyObject *v, *u; |
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3118 char *buf; |
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3119 char *p; |
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3120 const char *end; |
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3121 if (encoding == NULL) { |
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3122 buf = (char *)s; |
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3123 u = NULL; |
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3124 } else if (strcmp(encoding, "iso-8859-1") == 0) { |
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3125 buf = (char *)s; |
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3126 u = NULL; |
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3127 } else { |
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3128 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ |
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3129 u = PyString_FromStringAndSize((char *)NULL, len * 4); |
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3130 if (u == NULL) |
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3131 return NULL; |
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3132 p = buf = PyString_AsString(u); |
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3133 end = s + len; |
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3134 while (s < end) { |
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3135 if (*s == '\\') { |
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3136 *p++ = *s++; |
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3137 if (*s & 0x80) { |
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|
3138 strcpy(p, "u005c"); |
|
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3139 p += 5; |
|
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|
3140 } |
|
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3141 } |
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|
3142 if (*s & 0x80) { /* XXX inefficient */ |
|
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|
3143 PyObject *w; |
|
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3144 char *r; |
|
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3145 Py_ssize_t rn, i; |
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3146 w = decode_utf8(&s, end, "utf-16-be"); |
|
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3147 if (w == NULL) { |
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|
3148 Py_DECREF(u); |
|
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3149 return NULL; |
|
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3150 } |
|
41595
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|
3151 assert(PyBytes_Check(w)); |
|
2c54763c4504
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3152 r = PyBytes_AsString(w); |
|
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3153 rn = PyBytes_Size(w); |
|
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3154 assert(rn % 2 == 0); |
|
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3155 for (i = 0; i < rn; i += 2) { |
|
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|
3156 sprintf(p, "\\u%02x%02x", |
|
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|
3157 r[i + 0] & 0xFF, |
|
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|
3158 r[i + 1] & 0xFF); |
|
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3159 p += 6; |
|
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3160 } |
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|
3161 Py_DECREF(w); |
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3162 } else { |
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3163 *p++ = *s++; |
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|
3164 } |
|
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|
3165 } |
|
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3166 len = p - buf; |
|
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3167 s = buf; |
|
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3168 } |
|
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|
3169 if (rawmode) |
|
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3170 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
|
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3171 else |
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3172 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
|
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|
3173 Py_XDECREF(u); |
|
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|
3174 return v; |
| 35742 | 3175 } |
| 3176 | |
| 3177 /* s is a Python string literal, including the bracketing quote characters, | |
| 3178 * and r &/or u prefixes (if any), and embedded escape sequences (if any). | |
| 3179 * parsestr parses it, and returns the decoded Python string object. | |
| 3180 */ | |
| 3181 static PyObject * | |
| 40894 | 3182 parsestr(const node *n, const char *encoding, int *bytesmode) |
| 35742 | 3183 { |
|
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|
3184 size_t len; |
|
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|
3185 const char *s = STR(n); |
|
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|
3186 int quote = Py_CHARMASK(*s); |
|
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|
3187 int rawmode = 0; |
|
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|
3188 int need_encoding; |
| 35742 | 3189 |
|
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|
3190 if (isalpha(quote) || quote == '_') { |
|
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|
3191 if (quote == 'b' || quote == 'B') { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3192 quote = *++s; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3193 *bytesmode = 1; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3194 } |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3195 if (quote == 'r' || quote == 'R') { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3196 quote = *++s; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3197 rawmode = 1; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
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|
3198 } |
|
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|
3199 } |
|
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|
3200 if (quote != '\'' && quote != '\"') { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3201 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3202 return NULL; |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3203 } |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3204 s++; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3205 len = strlen(s); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3206 if (len > INT_MAX) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3207 PyErr_SetString(PyExc_OverflowError, |
|
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|
3208 "string to parse is too long"); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3209 return NULL; |
|
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|
3210 } |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3211 if (s[--len] != quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3212 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3213 return NULL; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3214 } |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3215 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3216 s += 2; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3217 len -= 2; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3218 if (s[--len] != quote || s[--len] != quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3219 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3220 return NULL; |
| 40894 | 3221 } |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3222 } |
|
41558
29ae667f3239
Checkpoint. Manipulated things so that string literals are always
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3223 if (!*bytesmode) { |
|
41554
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3224 return decode_unicode(s, len, rawmode, encoding); |
|
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|
3225 } |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3226 if (*bytesmode) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3227 /* Disallow non-ascii characters (but not escapes) */ |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3228 const char *c; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3229 for (c = s; *c; c++) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3230 if (Py_CHARMASK(*c) >= 0x80) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3231 ast_error(n, "bytes can only contain ASCII " |
|
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|
3232 "literal characters."); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3233 return NULL; |
|
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Merged revisions 53952-54987 via svnmerge from
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parents:
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changeset
|
3234 } |
|
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|
3235 } |
|
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changeset
|
3236 } |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3237 need_encoding = (!*bytesmode && encoding != NULL && |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3238 strcmp(encoding, "utf-8") != 0 && |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3239 strcmp(encoding, "iso-8859-1") != 0); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3240 if (rawmode || strchr(s, '\\') == NULL) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3241 if (need_encoding) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3242 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3243 if (u == NULL) |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3244 return NULL; |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3245 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
|
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changeset
|
3246 Py_DECREF(u); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3247 return v; |
|
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Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
3248 } else { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3249 return PyString_FromStringAndSize(s, len); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3250 } |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3251 } |
| 35742 | 3252 |
|
41698
7d49038e99c9
Remove support for u"..." literals.
Guido van Rossum <guido@python.org>
parents:
41595
diff
changeset
|
3253 return PyString_DecodeEscape(s, len, NULL, 1, |
|
41554
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3254 need_encoding ? encoding : NULL); |
| 35742 | 3255 } |
| 3256 | |
| 3257 /* Build a Python string object out of a STRING atom. This takes care of | |
| 3258 * compile-time literal catenation, calling parsestr() on each piece, and | |
| 3259 * pasting the intermediate results together. | |
| 3260 */ | |
| 3261 static PyObject * | |
| 40894 | 3262 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3263 { |
|
41554
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Merged revisions 53952-54987 via svnmerge from
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|
3264 PyObject *v; |
|
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changeset
|
3265 int i; |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3266 REQ(CHILD(n, 0), STRING); |
|
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|
3267 v = parsestr(CHILD(n, 0), c->c_encoding, bytesmode); |
|
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|
3268 if (v != NULL) { |
|
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changeset
|
3269 /* String literal concatenation */ |
|
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|
3270 for (i = 1; i < NCH(n); i++) { |
|
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|
3271 PyObject *s; |
|
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|
3272 int subbm = 0; |
|
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|
3273 s = parsestr(CHILD(n, i), c->c_encoding, &subbm); |
|
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|
3274 if (s == NULL) |
|
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changeset
|
3275 goto onError; |
|
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changeset
|
3276 if (*bytesmode != subbm) { |
|
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|
3277 ast_error(n, "cannot mix bytes and nonbytes" |
|
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|
3278 "literals"); |
|
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|
3279 goto onError; |
|
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changeset
|
3280 } |
|
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|
3281 if (PyString_Check(v) && PyString_Check(s)) { |
|
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|
3282 PyString_ConcatAndDel(&v, s); |
|
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|
3283 if (v == NULL) |
|
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|
3284 goto onError; |
|
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changeset
|
3285 } |
|
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|
3286 else { |
|
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|
3287 PyObject *temp = PyUnicode_Concat(v, s); |
|
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|
3288 Py_DECREF(s); |
|
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changeset
|
3289 Py_DECREF(v); |
|
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|
3290 v = temp; |
|
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changeset
|
3291 if (v == NULL) |
|
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changeset
|
3292 goto onError; |
|
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changeset
|
3293 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3294 } |
|
41554
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|
3295 } |
|
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|
3296 return v; |
| 35742 | 3297 |
|
41554
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changeset
|
3298 onError: |
|
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changeset
|
3299 Py_XDECREF(v); |
|
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changeset
|
3300 return NULL; |
| 35742 | 3301 } |