Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 39676:eb2f70fdbf32
Remove support for backticks from the grammar and compiler.
Still need to remove traces of the UNARY_CONVERT opcode.
| author | Brett Cannon <bcannon@gmail.com> |
|---|---|
| date | Fri, 25 Aug 2006 04:28:18 +0000 |
| parents | efe3f2c0da5e |
| children | f87a3e61853d |
| 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" | |
|
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
|
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 /* XXX TO DO | |
| 19 - re-indent this file (should be done) | |
| 20 - internal error checking (freeing memory, etc.) | |
| 21 - syntax errors | |
| 22 */ | |
| 23 | |
| 24 /* Data structure used internally */ | |
| 25 struct compiling { | |
|
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
|
26 char *c_encoding; /* source encoding */ |
|
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
|
27 PyArena *c_arena; /* arena for allocating memeory */ |
| 35742 | 28 }; |
| 29 | |
| 30 static asdl_seq *seq_for_testlist(struct compiling *, const node *); | |
| 31 static expr_ty ast_for_expr(struct compiling *, const node *); | |
| 32 static stmt_ty ast_for_stmt(struct compiling *, const node *); | |
| 33 static asdl_seq *ast_for_suite(struct compiling *, const node *); | |
|
37879
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Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
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34 static asdl_seq *ast_for_exprlist(struct compiling *, const node *, expr_context_ty); |
|
35798
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Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
35 static expr_ty ast_for_testlist(struct compiling *, const node *); |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
36 static expr_ty ast_for_testlist_gexp(struct compiling *, const node *); |
| 35742 | 37 |
| 38 /* Note different signature for ast_for_call */ | |
| 39 static expr_ty ast_for_call(struct compiling *, const node *, expr_ty); | |
| 40 | |
| 41 static PyObject *parsenumber(const char *); | |
| 42 static PyObject *parsestr(const char *s, const char *encoding); | |
| 43 static PyObject *parsestrplus(struct compiling *, const node *n); | |
| 44 | |
| 45 #ifndef LINENO | |
| 46 #define LINENO(n) ((n)->n_lineno) | |
| 47 #endif | |
| 48 | |
|
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
|
49 static identifier |
|
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
|
50 new_identifier(const char* n, PyArena *arena) { |
|
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
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51 PyObject* id = PyString_InternFromString(n); |
|
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
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52 PyArena_AddPyObject(arena, id); |
|
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
|
53 return id; |
| 35742 | 54 } |
| 55 | |
|
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
|
56 #define NEW_IDENTIFIER(n) new_identifier(STR(n), c->c_arena) |
| 35742 | 57 |
| 58 /* This routine provides an invalid object for the syntax error. | |
| 59 The outermost routine must unpack this error and create the | |
| 60 proper object. We do this so that we don't have to pass | |
| 61 the filename to everything function. | |
| 62 | |
| 63 XXX Maybe we should just pass the filename... | |
| 64 */ | |
| 65 | |
| 66 static int | |
| 67 ast_error(const node *n, const char *errstr) | |
| 68 { | |
| 69 PyObject *u = Py_BuildValue("zi", errstr, LINENO(n)); | |
| 70 if (!u) | |
| 71 return 0; | |
| 72 PyErr_SetObject(PyExc_SyntaxError, u); | |
| 73 Py_DECREF(u); | |
| 74 return 0; | |
| 75 } | |
| 76 | |
| 77 static void | |
| 78 ast_error_finish(const char *filename) | |
| 79 { | |
| 80 PyObject *type, *value, *tback, *errstr, *loc, *tmp; | |
|
36231
d3f4c467e439
Fix icc warnings: conversion from "long" to "int" may lose significant bits
Neal Norwitz <nnorwitz@gmail.com>
parents:
36224
diff
changeset
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81 long lineno; |
| 35742 | 82 |
| 83 assert(PyErr_Occurred()); | |
| 84 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
| 85 return; | |
| 86 | |
| 87 PyErr_Fetch(&type, &value, &tback); | |
| 88 errstr = PyTuple_GetItem(value, 0); | |
| 89 if (!errstr) | |
| 90 return; | |
| 91 Py_INCREF(errstr); | |
| 92 lineno = PyInt_AsLong(PyTuple_GetItem(value, 1)); | |
|
36000
cc3261597136
SF #1370197, memory leak - ast_error_finish (in error conditions).
Neal Norwitz <nnorwitz@gmail.com>
parents:
35990
diff
changeset
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93 if (lineno == -1) { |
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cc3261597136
SF #1370197, memory leak - ast_error_finish (in error conditions).
Neal Norwitz <nnorwitz@gmail.com>
parents:
35990
diff
changeset
|
94 Py_DECREF(errstr); |
| 35742 | 95 return; |
|
36000
cc3261597136
SF #1370197, memory leak - ast_error_finish (in error conditions).
Neal Norwitz <nnorwitz@gmail.com>
parents:
35990
diff
changeset
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96 } |
| 35742 | 97 Py_DECREF(value); |
| 98 | |
| 99 loc = PyErr_ProgramText(filename, lineno); | |
| 100 if (!loc) { | |
| 101 Py_INCREF(Py_None); | |
| 102 loc = Py_None; | |
| 103 } | |
|
36231
d3f4c467e439
Fix icc warnings: conversion from "long" to "int" may lose significant bits
Neal Norwitz <nnorwitz@gmail.com>
parents:
36224
diff
changeset
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104 tmp = Py_BuildValue("(zlOO)", filename, lineno, Py_None, loc); |
| 35742 | 105 Py_DECREF(loc); |
|
36000
cc3261597136
SF #1370197, memory leak - ast_error_finish (in error conditions).
Neal Norwitz <nnorwitz@gmail.com>
parents:
35990
diff
changeset
|
106 if (!tmp) { |
|
cc3261597136
SF #1370197, memory leak - ast_error_finish (in error conditions).
Neal Norwitz <nnorwitz@gmail.com>
parents:
35990
diff
changeset
|
107 Py_DECREF(errstr); |
| 35742 | 108 return; |
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36000
cc3261597136
SF #1370197, memory leak - ast_error_finish (in error conditions).
Neal Norwitz <nnorwitz@gmail.com>
parents:
35990
diff
changeset
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109 } |
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38453
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Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents:
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changeset
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110 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 111 Py_DECREF(errstr); |
| 112 Py_DECREF(tmp); | |
| 113 if (!value) | |
| 114 return; | |
| 115 PyErr_Restore(type, value, tback); | |
| 116 } | |
| 117 | |
| 118 /* num_stmts() returns number of contained statements. | |
| 119 | |
| 120 Use this routine to determine how big a sequence is needed for | |
| 121 the statements in a parse tree. Its raison d'etre is this bit of | |
| 122 grammar: | |
| 123 | |
| 124 stmt: simple_stmt | compound_stmt | |
| 125 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 126 | |
| 127 A simple_stmt can contain multiple small_stmt elements joined | |
| 128 by semicolons. If the arg is a simple_stmt, the number of | |
| 129 small_stmt elements is returned. | |
| 130 */ | |
| 131 | |
| 132 static int | |
| 133 num_stmts(const node *n) | |
| 134 { | |
| 135 int i, l; | |
| 136 node *ch; | |
| 137 | |
| 138 switch (TYPE(n)) { | |
| 139 case single_input: | |
| 140 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 141 return 0; | |
| 142 else | |
| 143 return num_stmts(CHILD(n, 0)); | |
| 144 case file_input: | |
| 145 l = 0; | |
| 146 for (i = 0; i < NCH(n); i++) { | |
| 147 ch = CHILD(n, i); | |
| 148 if (TYPE(ch) == stmt) | |
| 149 l += num_stmts(ch); | |
| 150 } | |
| 151 return l; | |
| 152 case stmt: | |
| 153 return num_stmts(CHILD(n, 0)); | |
| 154 case compound_stmt: | |
| 155 return 1; | |
| 156 case simple_stmt: | |
| 157 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 158 case suite: | |
| 159 if (NCH(n) == 1) | |
| 160 return num_stmts(CHILD(n, 0)); | |
| 161 else { | |
| 162 l = 0; | |
| 163 for (i = 2; i < (NCH(n) - 1); i++) | |
| 164 l += num_stmts(CHILD(n, i)); | |
| 165 return l; | |
| 166 } | |
| 167 default: { | |
| 168 char buf[128]; | |
| 169 | |
| 170 sprintf(buf, "Non-statement found: %d %d\n", | |
| 171 TYPE(n), NCH(n)); | |
| 172 Py_FatalError(buf); | |
| 173 } | |
| 174 } | |
| 175 assert(0); | |
| 176 return 0; | |
| 177 } | |
| 178 | |
| 179 /* Transform the CST rooted at node * to the appropriate AST | |
| 180 */ | |
| 181 | |
| 182 mod_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
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183 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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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>
parents:
36001
diff
changeset
|
184 PyArena *arena) |
| 35742 | 185 { |
|
36718
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Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
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186 int i, j, k, num; |
| 35742 | 187 asdl_seq *stmts = NULL; |
| 188 stmt_ty s; | |
| 189 node *ch; | |
| 190 struct compiling c; | |
| 191 | |
| 192 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
|
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
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193 c.c_encoding = "utf-8"; |
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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
|
194 if (TYPE(n) == encoding_decl) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
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195 ast_error(n, "encoding declaration in Unicode string"); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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parents:
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changeset
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196 goto error; |
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f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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parents:
36877
diff
changeset
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197 } |
| 35742 | 198 } else if (TYPE(n) == encoding_decl) { |
| 199 c.c_encoding = STR(n); | |
| 200 n = CHILD(n, 0); | |
| 201 } else { | |
| 202 c.c_encoding = NULL; | |
| 203 } | |
|
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
|
204 c.c_arena = arena; |
| 35742 | 205 |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
206 k = 0; |
| 35742 | 207 switch (TYPE(n)) { |
| 208 case file_input: | |
|
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
|
209 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 210 if (!stmts) |
| 211 return NULL; | |
| 212 for (i = 0; i < NCH(n) - 1; i++) { | |
| 213 ch = CHILD(n, i); | |
| 214 if (TYPE(ch) == NEWLINE) | |
| 215 continue; | |
| 216 REQ(ch, stmt); | |
| 217 num = num_stmts(ch); | |
| 218 if (num == 1) { | |
| 219 s = ast_for_stmt(&c, ch); | |
| 220 if (!s) | |
| 221 goto error; | |
|
36718
45e6f901902c
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Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
222 asdl_seq_SET(stmts, k++, s); |
| 35742 | 223 } |
| 224 else { | |
| 225 ch = CHILD(ch, 0); | |
| 226 REQ(ch, simple_stmt); | |
| 227 for (j = 0; j < num; j++) { | |
| 228 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 229 if (!s) | |
| 230 goto error; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
231 asdl_seq_SET(stmts, k++, s); |
| 35742 | 232 } |
| 233 } | |
| 234 } | |
|
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
|
235 return Module(stmts, arena); |
| 35742 | 236 case eval_input: { |
| 237 expr_ty testlist_ast; | |
| 238 | |
| 239 /* XXX Why not gen_for here? */ | |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
240 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 241 if (!testlist_ast) |
| 242 goto error; | |
|
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
|
243 return Expression(testlist_ast, arena); |
| 35742 | 244 } |
| 245 case single_input: | |
| 246 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
|
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
|
247 stmts = asdl_seq_new(1, arena); |
| 35742 | 248 if (!stmts) |
| 249 goto error; | |
|
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
|
250 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, 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:
36877
diff
changeset
|
251 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
|
252 return Interactive(stmts, arena); |
| 35742 | 253 } |
| 254 else { | |
| 255 n = CHILD(n, 0); | |
| 256 num = 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
|
257 stmts = asdl_seq_new(num, arena); |
| 35742 | 258 if (!stmts) |
| 259 goto error; | |
| 260 if (num == 1) { | |
|
36224
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Fix icc warnings: shadowing local variables
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parents:
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diff
changeset
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261 s = ast_for_stmt(&c, n); |
| 35742 | 262 if (!s) |
| 263 goto error; | |
| 264 asdl_seq_SET(stmts, 0, s); | |
| 265 } | |
| 266 else { | |
| 267 /* Only a simple_stmt can contain multiple statements. */ | |
| 268 REQ(n, simple_stmt); | |
| 269 for (i = 0; i < NCH(n); i += 2) { | |
| 270 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 271 break; | |
| 272 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 273 if (!s) | |
| 274 goto error; | |
| 275 asdl_seq_SET(stmts, i / 2, s); | |
| 276 } | |
| 277 } | |
| 278 | |
|
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
|
279 return Interactive(stmts, arena); |
| 35742 | 280 } |
| 281 default: | |
| 282 goto error; | |
| 283 } | |
| 284 error: | |
| 285 ast_error_finish(filename); | |
| 286 return NULL; | |
| 287 } | |
| 288 | |
| 289 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 290 */ | |
| 291 | |
| 292 static operator_ty | |
| 293 get_operator(const node *n) | |
| 294 { | |
| 295 switch (TYPE(n)) { | |
| 296 case VBAR: | |
| 297 return BitOr; | |
| 298 case CIRCUMFLEX: | |
| 299 return BitXor; | |
| 300 case AMPER: | |
| 301 return BitAnd; | |
| 302 case LEFTSHIFT: | |
| 303 return LShift; | |
| 304 case RIGHTSHIFT: | |
| 305 return RShift; | |
| 306 case PLUS: | |
| 307 return Add; | |
| 308 case MINUS: | |
| 309 return Sub; | |
| 310 case STAR: | |
| 311 return Mult; | |
| 312 case SLASH: | |
| 313 return Div; | |
| 314 case DOUBLESLASH: | |
| 315 return FloorDiv; | |
| 316 case PERCENT: | |
| 317 return Mod; | |
| 318 default: | |
|
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
|
319 return (operator_ty)0; |
| 35742 | 320 } |
| 321 } | |
| 322 | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
323 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 324 |
| 325 Only sets context for expr kinds that "can appear in assignment context" | |
| 326 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 327 an appropriate syntax error and returns false. | |
| 328 */ | |
| 329 | |
| 330 static int | |
| 331 set_context(expr_ty e, expr_context_ty ctx, const node *n) | |
| 332 { | |
| 333 asdl_seq *s = NULL; | |
|
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Improved handling of syntax errors.
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parents:
36242
diff
changeset
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334 /* If a particular expression type can't be used for assign / delete, |
|
a625e8876407
Improved handling of syntax errors.
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parents:
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diff
changeset
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335 set expr_name to its name and an error message will be generated. |
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Improved handling of syntax errors.
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parents:
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diff
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336 */ |
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Improved handling of syntax errors.
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parents:
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337 const char* expr_name = NULL; |
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a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
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338 |
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a625e8876407
Improved handling of syntax errors.
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parents:
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diff
changeset
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339 /* The ast defines augmented store and load contexts, but the |
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a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
340 implementation here doesn't actually use them. The code may be |
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341 a little more complex than necessary as a result. It also means |
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342 that expressions in an augmented assignment have a Store context. |
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343 Consider restructuring so that augmented assignment uses |
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344 set_context(), too. |
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345 */ |
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346 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 347 |
| 348 switch (e->kind) { | |
| 349 case Attribute_kind: | |
| 350 if (ctx == Store && | |
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351 !strcmp(PyString_AS_STRING(e->v.Attribute.attr), "None")) { |
| 35742 | 352 return ast_error(n, "assignment to None"); |
| 353 } | |
| 354 e->v.Attribute.ctx = ctx; | |
| 355 break; | |
| 356 case Subscript_kind: | |
| 357 e->v.Subscript.ctx = ctx; | |
| 358 break; | |
| 359 case Name_kind: | |
| 360 if (ctx == Store && | |
| 361 !strcmp(PyString_AS_STRING(e->v.Name.id), "None")) { | |
| 362 return ast_error(n, "assignment to None"); | |
| 363 } | |
| 364 e->v.Name.ctx = ctx; | |
| 365 break; | |
| 366 case List_kind: | |
| 367 e->v.List.ctx = ctx; | |
| 368 s = e->v.List.elts; | |
| 369 break; | |
| 370 case Tuple_kind: | |
| 371 if (asdl_seq_LEN(e->v.Tuple.elts) == 0) | |
| 372 return ast_error(n, "can't assign to ()"); | |
| 373 e->v.Tuple.ctx = ctx; | |
| 374 s = e->v.Tuple.elts; | |
| 375 break; | |
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376 case Lambda_kind: |
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377 expr_name = "lambda"; |
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378 break; |
| 35742 | 379 case Call_kind: |
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380 expr_name = "function call"; |
| 35742 | 381 break; |
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382 case BoolOp_kind: |
| 35742 | 383 case BinOp_kind: |
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384 case UnaryOp_kind: |
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385 expr_name = "operator"; |
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386 break; |
| 35742 | 387 case GeneratorExp_kind: |
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388 expr_name = "generator expression"; |
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389 break; |
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390 case Yield_kind: |
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391 expr_name = "yield expression"; |
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392 break; |
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393 case ListComp_kind: |
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394 expr_name = "list comprehension"; |
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395 break; |
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396 case Dict_kind: |
| 35742 | 397 case Num_kind: |
| 398 case Str_kind: | |
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399 expr_name = "literal"; |
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400 break; |
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401 case Compare_kind: |
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402 expr_name = "comparison"; |
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403 break; |
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404 case Repr_kind: |
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405 expr_name = "repr"; |
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406 break; |
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407 case IfExp_kind: |
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408 expr_name = "conditional expression"; |
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409 break; |
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410 default: |
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411 PyErr_Format(PyExc_SystemError, |
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412 "unexpected expression in assignment %d (line %d)", |
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413 e->kind, e->lineno); |
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414 return 0; |
| 35742 | 415 } |
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416 /* Check for error string set by switch */ |
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417 if (expr_name) { |
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418 char buf[300]; |
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419 PyOS_snprintf(buf, sizeof(buf), |
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420 "can't %s %s", |
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421 ctx == Store ? "assign to" : "delete", |
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422 expr_name); |
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423 return ast_error(n, buf); |
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424 } |
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425 |
| 35742 | 426 /* If the LHS is a list or tuple, we need to set the assignment |
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427 context for all the contained elements. |
| 35742 | 428 */ |
| 429 if (s) { | |
| 430 int i; | |
| 431 | |
| 432 for (i = 0; i < asdl_seq_LEN(s); i++) { | |
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433 if (!set_context((expr_ty)asdl_seq_GET(s, i), ctx, n)) |
| 35742 | 434 return 0; |
| 435 } | |
| 436 } | |
| 437 return 1; | |
| 438 } | |
| 439 | |
| 440 static operator_ty | |
| 441 ast_for_augassign(const node *n) | |
| 442 { | |
| 443 REQ(n, augassign); | |
| 444 n = CHILD(n, 0); | |
| 445 switch (STR(n)[0]) { | |
| 446 case '+': | |
| 447 return Add; | |
| 448 case '-': | |
| 449 return Sub; | |
| 450 case '/': | |
| 451 if (STR(n)[1] == '/') | |
| 452 return FloorDiv; | |
| 453 else | |
| 454 return Div; | |
| 455 case '%': | |
| 456 return Mod; | |
| 457 case '<': | |
| 458 return LShift; | |
| 459 case '>': | |
| 460 return RShift; | |
| 461 case '&': | |
| 462 return BitAnd; | |
| 463 case '^': | |
| 464 return BitXor; | |
| 465 case '|': | |
| 466 return BitOr; | |
| 467 case '*': | |
| 468 if (STR(n)[1] == '*') | |
| 469 return Pow; | |
| 470 else | |
| 471 return Mult; | |
| 472 default: | |
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473 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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474 return (operator_ty)0; |
| 35742 | 475 } |
| 476 } | |
| 477 | |
| 478 static cmpop_ty | |
| 479 ast_for_comp_op(const node *n) | |
| 480 { | |
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481 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 482 |'is' 'not' |
| 483 */ | |
| 484 REQ(n, comp_op); | |
| 485 if (NCH(n) == 1) { | |
| 486 n = CHILD(n, 0); | |
| 487 switch (TYPE(n)) { | |
| 488 case LESS: | |
| 489 return Lt; | |
| 490 case GREATER: | |
| 491 return Gt; | |
| 492 case EQEQUAL: /* == */ | |
| 493 return Eq; | |
| 494 case LESSEQUAL: | |
| 495 return LtE; | |
| 496 case GREATEREQUAL: | |
| 497 return GtE; | |
| 498 case NOTEQUAL: | |
| 499 return NotEq; | |
| 500 case NAME: | |
| 501 if (strcmp(STR(n), "in") == 0) | |
| 502 return In; | |
| 503 if (strcmp(STR(n), "is") == 0) | |
| 504 return Is; | |
| 505 default: | |
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506 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 507 STR(n)); |
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508 return (cmpop_ty)0; |
| 35742 | 509 } |
| 510 } | |
| 511 else if (NCH(n) == 2) { | |
| 512 /* handle "not in" and "is not" */ | |
| 513 switch (TYPE(CHILD(n, 0))) { | |
| 514 case NAME: | |
| 515 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 516 return NotIn; | |
| 517 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 518 return IsNot; | |
| 519 default: | |
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520 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 521 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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522 return (cmpop_ty)0; |
| 35742 | 523 } |
| 524 } | |
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525 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 526 NCH(n)); |
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527 return (cmpop_ty)0; |
| 35742 | 528 } |
| 529 | |
| 530 static asdl_seq * | |
| 531 seq_for_testlist(struct compiling *c, const node *n) | |
| 532 { | |
| 533 /* testlist: test (',' test)* [','] */ | |
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534 asdl_seq *seq; |
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535 expr_ty expression; |
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536 int i; |
| 35742 | 537 assert(TYPE(n) == testlist |
| 538 || TYPE(n) == listmaker | |
| 539 || TYPE(n) == testlist_gexp | |
| 540 || TYPE(n) == testlist_safe | |
| 541 ); | |
| 542 | |
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543 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 544 if (!seq) |
| 545 return NULL; | |
| 546 | |
| 547 for (i = 0; i < NCH(n); i += 2) { | |
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548 assert(TYPE(CHILD(n, i)) == test || TYPE(CHILD(n, i)) == old_test); |
| 35742 | 549 |
| 550 expression = ast_for_expr(c, CHILD(n, i)); | |
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551 if (!expression) |
| 35742 | 552 return NULL; |
| 553 | |
| 554 assert(i / 2 < seq->size); | |
| 555 asdl_seq_SET(seq, i / 2, expression); | |
| 556 } | |
| 557 return seq; | |
| 558 } | |
| 559 | |
| 560 static expr_ty | |
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561 compiler_complex_args(struct compiling *c, const node *n) |
| 35742 | 562 { |
| 563 int i, len = (NCH(n) + 1) / 2; | |
| 564 expr_ty result; | |
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565 asdl_seq *args = asdl_seq_new(len, c->c_arena); |
| 35742 | 566 if (!args) |
| 567 return NULL; | |
| 568 | |
| 569 REQ(n, fplist); | |
| 570 for (i = 0; i < len; i++) { | |
| 571 const node *child = CHILD(CHILD(n, 2*i), 0); | |
| 572 expr_ty arg; | |
| 573 if (TYPE(child) == NAME) { | |
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574 if (!strcmp(STR(child), "None")) { |
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575 ast_error(child, "assignment to None"); |
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576 return NULL; |
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577 } |
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578 arg = Name(NEW_IDENTIFIER(child), Store, LINENO(child), |
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579 child->n_col_offset, c->c_arena); |
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580 } |
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581 else { |
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582 arg = compiler_complex_args(c, CHILD(CHILD(n, 2*i), 1)); |
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583 } |
| 35742 | 584 asdl_seq_SET(args, i, arg); |
| 585 } | |
| 586 | |
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587 result = Tuple(args, Store, LINENO(n), n->n_col_offset, c->c_arena); |
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changeset
|
588 if (!set_context(result, Store, n)) |
|
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diff
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|
589 return NULL; |
| 35742 | 590 return result; |
| 591 } | |
| 592 | |
| 593 | |
|
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diff
changeset
|
594 /* Create AST for argument list. */ |
| 35742 | 595 |
| 596 static arguments_ty | |
| 597 ast_for_arguments(struct compiling *c, const node *n) | |
| 598 { | |
| 599 /* parameters: '(' [varargslist] ')' | |
| 600 varargslist: (fpdef ['=' test] ',')* ('*' NAME [',' '**' NAME] | |
| 601 | '**' NAME) | fpdef ['=' test] (',' fpdef ['=' test])* [','] | |
| 602 */ | |
|
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diff
changeset
|
603 int i, j, k, n_args = 0, n_defaults = 0, found_default = 0; |
| 35742 | 604 asdl_seq *args, *defaults; |
| 605 identifier vararg = NULL, kwarg = NULL; | |
| 606 node *ch; | |
| 607 | |
| 608 if (TYPE(n) == parameters) { | |
| 609 if (NCH(n) == 2) /* () as argument list */ | |
|
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|
610 return arguments(NULL, NULL, NULL, NULL, c->c_arena); |
| 35742 | 611 n = CHILD(n, 1); |
| 612 } | |
| 613 REQ(n, varargslist); | |
| 614 | |
| 615 /* first count the number of normal args & defaults */ | |
| 616 for (i = 0; i < NCH(n); i++) { | |
| 617 ch = CHILD(n, i); | |
|
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diff
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|
618 if (TYPE(ch) == fpdef) |
| 35742 | 619 n_args++; |
| 620 if (TYPE(ch) == EQUAL) | |
| 621 n_defaults++; | |
| 622 } | |
|
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ea083efdc96c
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parents:
36001
diff
changeset
|
623 args = (n_args ? asdl_seq_new(n_args, c->c_arena) : NULL); |
| 35742 | 624 if (!args && n_args) |
|
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|
625 return NULL; /* Don't need to goto error; no objects allocated */ |
|
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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>
parents:
36001
diff
changeset
|
626 defaults = (n_defaults ? asdl_seq_new(n_defaults, c->c_arena) : NULL); |
| 35742 | 627 if (!defaults && n_defaults) |
|
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Merged revisions 46753-51188 via svnmerge from
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diff
changeset
|
628 return NULL; /* Don't need to goto error; no objects allocated */ |
| 35742 | 629 |
| 630 /* fpdef: NAME | '(' fplist ')' | |
| 631 fplist: fpdef (',' fpdef)* [','] | |
| 632 */ | |
| 633 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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parents:
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diff
changeset
|
634 j = 0; /* index for defaults */ |
|
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Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
635 k = 0; /* index for args */ |
| 35742 | 636 while (i < NCH(n)) { |
| 637 ch = CHILD(n, i); | |
| 638 switch (TYPE(ch)) { | |
| 639 case fpdef: | |
| 640 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is | |
| 641 anything other than EQUAL or a comma? */ | |
| 642 /* XXX Should NCH(n) check be made a separate check? */ | |
| 643 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { | |
|
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Thomas Wouters <thomas@python.org>
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changeset
|
644 expr_ty expression = ast_for_expr(c, CHILD(n, i + 2)); |
|
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diff
changeset
|
645 if (!expression) |
|
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parents:
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646 goto error; |
|
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diff
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|
647 assert(defaults != NULL); |
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|
648 asdl_seq_SET(defaults, j++, expression); |
| 35742 | 649 i += 2; |
| 650 found_default = 1; | |
| 651 } | |
| 652 else if (found_default) { | |
| 653 ast_error(n, | |
| 654 "non-default argument follows default argument"); | |
| 655 goto error; | |
| 656 } | |
| 657 if (NCH(ch) == 3) { | |
|
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Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
658 ch = CHILD(ch, 1); |
|
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659 /* def foo((x)): is not complex, special case. */ |
|
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changeset
|
660 if (NCH(ch) != 1) { |
|
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changeset
|
661 /* We have complex arguments, setup for unpacking. */ |
|
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|
662 asdl_seq_SET(args, k++, compiler_complex_args(c, ch)); |
|
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|
663 } else { |
|
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changeset
|
664 /* def foo((x)): setup for checking NAME below. */ |
|
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665 ch = CHILD(ch, 0); |
|
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666 } |
|
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|
667 } |
|
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changeset
|
668 if (TYPE(CHILD(ch, 0)) == NAME) { |
|
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ANSI-C-ify the placement of local var declarations.
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parents:
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diff
changeset
|
669 expr_ty name; |
| 35742 | 670 if (!strcmp(STR(CHILD(ch, 0)), "None")) { |
| 671 ast_error(CHILD(ch, 0), "assignment to None"); | |
| 672 goto error; | |
| 673 } | |
|
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parents:
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changeset
|
674 name = Name(NEW_IDENTIFIER(CHILD(ch, 0)), |
|
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|
675 Param, LINENO(ch), ch->n_col_offset, |
|
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changeset
|
676 c->c_arena); |
| 35742 | 677 if (!name) |
| 678 goto error; | |
|
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45e6f901902c
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parents:
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diff
changeset
|
679 asdl_seq_SET(args, k++, name); |
| 35742 | 680 |
| 681 } | |
| 682 i += 2; /* the name and the comma */ | |
| 683 break; | |
| 684 case STAR: | |
| 685 if (!strcmp(STR(CHILD(n, i+1)), "None")) { | |
| 686 ast_error(CHILD(n, i+1), "assignment to None"); | |
| 687 goto error; | |
| 688 } | |
| 689 vararg = NEW_IDENTIFIER(CHILD(n, i+1)); | |
| 690 i += 3; | |
| 691 break; | |
| 692 case DOUBLESTAR: | |
| 693 if (!strcmp(STR(CHILD(n, i+1)), "None")) { | |
| 694 ast_error(CHILD(n, i+1), "assignment to None"); | |
| 695 goto error; | |
| 696 } | |
| 697 kwarg = NEW_IDENTIFIER(CHILD(n, i+1)); | |
| 698 i += 3; | |
| 699 break; | |
| 700 default: | |
|
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f531c05cd240
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parents:
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changeset
|
701 PyErr_Format(PyExc_SystemError, |
| 35742 | 702 "unexpected node in varargslist: %d @ %d", |
| 703 TYPE(ch), i); | |
| 704 goto error; | |
| 705 } | |
| 706 } | |
| 707 | |
|
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ea083efdc96c
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diff
changeset
|
708 return arguments(args, vararg, kwarg, defaults, c->c_arena); |
| 35742 | 709 |
| 710 error: | |
|
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711 Py_XDECREF(vararg); |
|
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parents:
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diff
changeset
|
712 Py_XDECREF(kwarg); |
| 35742 | 713 return NULL; |
| 714 } | |
| 715 | |
| 716 static expr_ty | |
| 717 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 718 { | |
|
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parents:
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diff
changeset
|
719 expr_ty e; |
|
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Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
720 identifier id; |
|
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57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
721 int lineno, col_offset; |
| 35742 | 722 int i; |
| 723 | |
| 724 REQ(n, dotted_name); | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
725 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
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parents:
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diff
changeset
|
726 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
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parents:
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diff
changeset
|
727 col_offset = n->n_col_offset; |
|
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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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diff
changeset
|
728 |
| 35742 | 729 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 730 if (!id) | |
|
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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
|
731 return NULL; |
|
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57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
732 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 733 if (!e) |
|
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
|
734 return NULL; |
| 35742 | 735 |
| 736 for (i = 2; i < NCH(n); i+=2) { | |
| 737 id = NEW_IDENTIFIER(CHILD(n, i)); | |
| 738 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:
36001
diff
changeset
|
739 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
740 e = Attribute(e, id, Load, lineno, col_offset, c->c_arena); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
741 if (!e) |
|
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
|
742 return NULL; |
| 35742 | 743 } |
| 744 | |
| 745 return e; | |
| 746 } | |
| 747 | |
| 748 static expr_ty | |
| 749 ast_for_decorator(struct compiling *c, const node *n) | |
| 750 { | |
| 751 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 752 expr_ty d = NULL; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
753 expr_ty name_expr; |
| 35742 | 754 |
| 755 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
756 REQ(CHILD(n, 0), AT); |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
757 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 758 |
| 759 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 760 if (!name_expr) | |
|
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
|
761 return NULL; |
| 35742 | 762 |
| 763 if (NCH(n) == 3) { /* No arguments */ | |
| 764 d = name_expr; | |
| 765 name_expr = NULL; | |
| 766 } | |
| 767 else if (NCH(n) == 5) { /* Call with no arguments */ | |
|
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parents:
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diff
changeset
|
768 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
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
|
769 n->n_col_offset, c->c_arena); |
| 35742 | 770 if (!d) |
|
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
|
771 return NULL; |
| 35742 | 772 name_expr = NULL; |
| 773 } | |
| 774 else { | |
| 775 d = ast_for_call(c, CHILD(n, 3), name_expr); | |
| 776 if (!d) | |
|
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
|
777 return NULL; |
| 35742 | 778 name_expr = NULL; |
| 779 } | |
| 780 | |
| 781 return d; | |
| 782 } | |
| 783 | |
| 784 static asdl_seq* | |
| 785 ast_for_decorators(struct compiling *c, const node *n) | |
| 786 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
787 asdl_seq* decorator_seq; |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
788 expr_ty d; |
| 35742 | 789 int i; |
| 790 | |
| 791 REQ(n, decorators); | |
|
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
|
792 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 793 if (!decorator_seq) |
| 794 return NULL; | |
| 795 | |
| 796 for (i = 0; i < NCH(n); i++) { | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
797 d = ast_for_decorator(c, CHILD(n, i)); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
798 if (!d) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
799 return NULL; |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
800 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 801 } |
| 802 return decorator_seq; | |
| 803 } | |
| 804 | |
| 805 static stmt_ty | |
| 806 ast_for_funcdef(struct compiling *c, const node *n) | |
| 807 { | |
| 808 /* funcdef: 'def' [decorators] NAME parameters ':' suite */ | |
|
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Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
809 identifier name; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
810 arguments_ty args; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
811 asdl_seq *body; |
| 35742 | 812 asdl_seq *decorator_seq = NULL; |
| 813 int name_i; | |
| 814 | |
| 815 REQ(n, funcdef); | |
| 816 | |
| 817 if (NCH(n) == 6) { /* decorators are present */ | |
| 818 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); | |
| 819 if (!decorator_seq) | |
|
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
|
820 return NULL; |
| 35742 | 821 name_i = 2; |
| 822 } | |
| 823 else { | |
| 824 name_i = 1; | |
| 825 } | |
| 826 | |
| 827 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 828 if (!name) | |
|
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
|
829 return NULL; |
| 35742 | 830 else if (!strcmp(STR(CHILD(n, name_i)), "None")) { |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
831 ast_error(CHILD(n, name_i), "assignment to None"); |
|
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
|
832 return NULL; |
| 35742 | 833 } |
| 834 args = ast_for_arguments(c, CHILD(n, name_i + 1)); | |
| 835 if (!args) | |
|
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
|
836 return NULL; |
| 35742 | 837 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 838 if (!body) | |
|
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
|
839 return NULL; |
| 35742 | 840 |
|
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
|
841 return FunctionDef(name, args, body, decorator_seq, LINENO(n), |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
842 n->n_col_offset, c->c_arena); |
| 35742 | 843 } |
| 844 | |
| 845 static expr_ty | |
| 846 ast_for_lambdef(struct compiling *c, const node *n) | |
| 847 { | |
| 848 /* lambdef: 'lambda' [varargslist] ':' test */ | |
| 849 arguments_ty args; | |
| 850 expr_ty expression; | |
| 851 | |
| 852 if (NCH(n) == 3) { | |
|
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
|
853 args = arguments(NULL, NULL, NULL, NULL, c->c_arena); |
| 35742 | 854 if (!args) |
| 855 return NULL; | |
| 856 expression = ast_for_expr(c, CHILD(n, 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
|
857 if (!expression) |
| 35742 | 858 return NULL; |
| 859 } | |
| 860 else { | |
| 861 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 862 if (!args) | |
| 863 return NULL; | |
| 864 expression = ast_for_expr(c, CHILD(n, 3)); | |
|
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
|
865 if (!expression) |
| 35742 | 866 return NULL; |
| 867 } | |
| 868 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
869 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 870 } |
| 871 | |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
872 static expr_ty |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
873 ast_for_ifexpr(struct compiling *c, const node *n) |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
874 { |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
875 /* test: or_test 'if' or_test 'else' test */ |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
876 expr_ty expression, body, orelse; |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
877 |
|
36676
67c74efad8c2
Fix old not-reading-pep-308-right artifact.
Thomas Wouters <thomas@python.org>
parents:
36670
diff
changeset
|
878 assert(NCH(n) == 5); |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
879 body = ast_for_expr(c, CHILD(n, 0)); |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
880 if (!body) |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
881 return NULL; |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
882 expression = ast_for_expr(c, CHILD(n, 2)); |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
883 if (!expression) |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
884 return NULL; |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
885 orelse = ast_for_expr(c, CHILD(n, 4)); |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
886 if (!orelse) |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
887 return NULL; |
|
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
|
888 return IfExp(expression, body, orelse, 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:
36877
diff
changeset
|
889 c->c_arena); |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
890 } |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
891 |
| 35742 | 892 /* Count the number of 'for' loop in a list comprehension. |
| 893 | |
| 894 Helper for ast_for_listcomp(). | |
| 895 */ | |
| 896 | |
| 897 static int | |
| 898 count_list_fors(const node *n) | |
| 899 { | |
| 900 int n_fors = 0; | |
| 901 node *ch = CHILD(n, 1); | |
| 902 | |
| 903 count_list_for: | |
| 904 n_fors++; | |
| 905 REQ(ch, list_for); | |
| 906 if (NCH(ch) == 5) | |
| 907 ch = CHILD(ch, 4); | |
| 908 else | |
| 909 return n_fors; | |
| 910 count_list_iter: | |
| 911 REQ(ch, list_iter); | |
| 912 ch = CHILD(ch, 0); | |
| 913 if (TYPE(ch) == list_for) | |
| 914 goto count_list_for; | |
| 915 else if (TYPE(ch) == list_if) { | |
| 916 if (NCH(ch) == 3) { | |
| 917 ch = CHILD(ch, 2); | |
| 918 goto count_list_iter; | |
| 919 } | |
| 920 else | |
| 921 return n_fors; | |
| 922 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
923 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
924 /* Should never be reached */ |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
925 PyErr_SetString(PyExc_SystemError, "logic error in count_list_fors"); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
926 return -1; |
| 35742 | 927 } |
| 928 | |
| 929 /* Count the number of 'if' statements in a list comprehension. | |
| 930 | |
| 931 Helper for ast_for_listcomp(). | |
| 932 */ | |
| 933 | |
| 934 static int | |
| 935 count_list_ifs(const node *n) | |
| 936 { | |
| 937 int n_ifs = 0; | |
| 938 | |
| 939 count_list_iter: | |
| 940 REQ(n, list_iter); | |
| 941 if (TYPE(CHILD(n, 0)) == list_for) | |
| 942 return n_ifs; | |
| 943 n = CHILD(n, 0); | |
| 944 REQ(n, list_if); | |
| 945 n_ifs++; | |
| 946 if (NCH(n) == 2) | |
| 947 return n_ifs; | |
| 948 n = CHILD(n, 2); | |
| 949 goto count_list_iter; | |
| 950 } | |
| 951 | |
| 952 static expr_ty | |
| 953 ast_for_listcomp(struct compiling *c, const node *n) | |
| 954 { | |
| 955 /* listmaker: test ( list_for | (',' test)* [','] ) | |
| 956 list_for: 'for' exprlist 'in' testlist_safe [list_iter] | |
| 957 list_iter: list_for | list_if | |
| 958 list_if: 'if' test [list_iter] | |
| 959 testlist_safe: test [(',' test)+ [',']] | |
| 960 */ | |
| 961 expr_ty elt; | |
| 962 asdl_seq *listcomps; | |
| 963 int i, n_fors; | |
| 964 node *ch; | |
| 965 | |
| 966 REQ(n, listmaker); | |
| 967 assert(NCH(n) > 1); | |
| 968 | |
| 969 elt = ast_for_expr(c, CHILD(n, 0)); | |
| 970 if (!elt) | |
| 971 return NULL; | |
| 972 | |
| 973 n_fors = count_list_fors(n); | |
| 974 if (n_fors == -1) | |
| 975 return NULL; | |
| 976 | |
|
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
|
977 listcomps = asdl_seq_new(n_fors, c->c_arena); |
|
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
|
978 if (!listcomps) |
| 35742 | 979 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
|
980 |
| 35742 | 981 ch = CHILD(n, 1); |
| 982 for (i = 0; i < n_fors; i++) { | |
| 983 comprehension_ty lc; | |
| 984 asdl_seq *t; | |
| 985 expr_ty expression; | |
| 986 | |
| 987 REQ(ch, list_for); | |
| 988 | |
| 989 t = ast_for_exprlist(c, CHILD(ch, 1), Store); | |
|
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
|
990 if (!t) |
| 35742 | 991 return NULL; |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
992 expression = ast_for_testlist(c, CHILD(ch, 3)); |
|
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
|
993 if (!expression) |
| 35742 | 994 return NULL; |
| 995 | |
|
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
|
996 if (asdl_seq_LEN(t) == 1) |
|
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
|
997 lc = comprehension((expr_ty)asdl_seq_GET(t, 0), expression, 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
|
998 c->c_arena); |
| 35742 | 999 else |
|
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
|
1000 lc = comprehension(Tuple(t, Store, LINENO(ch), ch->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1001 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
|
1002 expression, NULL, c->c_arena); |
|
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
|
1003 if (!lc) |
| 35742 | 1004 return NULL; |
| 1005 | |
| 1006 if (NCH(ch) == 5) { | |
| 1007 int j, n_ifs; | |
| 1008 asdl_seq *ifs; | |
| 1009 | |
| 1010 ch = CHILD(ch, 4); | |
| 1011 n_ifs = count_list_ifs(ch); | |
|
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
|
1012 if (n_ifs == -1) |
| 35742 | 1013 return NULL; |
| 1014 | |
|
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
|
1015 ifs = asdl_seq_new(n_ifs, c->c_arena); |
|
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
|
1016 if (!ifs) |
| 35742 | 1017 return NULL; |
| 1018 | |
| 1019 for (j = 0; j < n_ifs; j++) { | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1020 REQ(ch, list_iter); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1021 ch = CHILD(ch, 0); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1022 REQ(ch, list_if); |
| 35742 | 1023 |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1024 asdl_seq_SET(ifs, j, ast_for_expr(c, CHILD(ch, 1))); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1025 if (NCH(ch) == 3) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1026 ch = CHILD(ch, 2); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1027 } |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1028 /* on exit, must guarantee that ch is a list_for */ |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1029 if (TYPE(ch) == list_iter) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1030 ch = CHILD(ch, 0); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1031 lc->ifs = ifs; |
| 35742 | 1032 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1033 asdl_seq_SET(listcomps, i, lc); |
| 35742 | 1034 } |
| 1035 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1036 return ListComp(elt, listcomps, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1037 } |
| 1038 | |
| 1039 /* | |
| 1040 Count the number of 'for' loops in a generator expression. | |
| 1041 | |
| 1042 Helper for ast_for_genexp(). | |
| 1043 */ | |
| 1044 | |
| 1045 static int | |
| 1046 count_gen_fors(const node *n) | |
| 1047 { | |
| 1048 int n_fors = 0; | |
| 1049 node *ch = CHILD(n, 1); | |
| 1050 | |
| 1051 count_gen_for: | |
| 1052 n_fors++; | |
| 1053 REQ(ch, gen_for); | |
| 1054 if (NCH(ch) == 5) | |
| 1055 ch = CHILD(ch, 4); | |
| 1056 else | |
| 1057 return n_fors; | |
| 1058 count_gen_iter: | |
| 1059 REQ(ch, gen_iter); | |
| 1060 ch = CHILD(ch, 0); | |
| 1061 if (TYPE(ch) == gen_for) | |
| 1062 goto count_gen_for; | |
| 1063 else if (TYPE(ch) == gen_if) { | |
| 1064 if (NCH(ch) == 3) { | |
| 1065 ch = CHILD(ch, 2); | |
| 1066 goto count_gen_iter; | |
| 1067 } | |
| 1068 else | |
| 1069 return n_fors; | |
| 1070 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1071 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1072 /* Should never be reached */ |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1073 PyErr_SetString(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1074 "logic error in count_gen_fors"); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1075 return -1; |
| 35742 | 1076 } |
| 1077 | |
| 1078 /* Count the number of 'if' statements in a generator expression. | |
| 1079 | |
| 1080 Helper for ast_for_genexp(). | |
| 1081 */ | |
| 1082 | |
| 1083 static int | |
| 1084 count_gen_ifs(const node *n) | |
| 1085 { | |
| 1086 int n_ifs = 0; | |
| 1087 | |
| 1088 while (1) { | |
| 1089 REQ(n, gen_iter); | |
| 1090 if (TYPE(CHILD(n, 0)) == gen_for) | |
| 1091 return n_ifs; | |
| 1092 n = CHILD(n, 0); | |
| 1093 REQ(n, gen_if); | |
| 1094 n_ifs++; | |
| 1095 if (NCH(n) == 2) | |
| 1096 return n_ifs; | |
| 1097 n = CHILD(n, 2); | |
| 1098 } | |
| 1099 } | |
| 1100 | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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parents:
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diff
changeset
|
1101 /* TODO(jhylton): Combine with list comprehension code? */ |
| 35742 | 1102 static expr_ty |
| 1103 ast_for_genexp(struct compiling *c, const node *n) | |
| 1104 { | |
| 1105 /* testlist_gexp: test ( gen_for | (',' test)* [','] ) | |
| 1106 argument: [test '='] test [gen_for] # Really [keyword '='] test */ | |
| 1107 expr_ty elt; | |
| 1108 asdl_seq *genexps; | |
| 1109 int i, n_fors; | |
| 1110 node *ch; | |
| 1111 | |
| 1112 assert(TYPE(n) == (testlist_gexp) || TYPE(n) == (argument)); | |
| 1113 assert(NCH(n) > 1); | |
| 1114 | |
| 1115 elt = ast_for_expr(c, CHILD(n, 0)); | |
| 1116 if (!elt) | |
| 1117 return NULL; | |
| 1118 | |
| 1119 n_fors = count_gen_fors(n); | |
| 1120 if (n_fors == -1) | |
| 1121 return NULL; | |
|
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diff
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|
1122 |
|
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changeset
|
1123 genexps = asdl_seq_new(n_fors, c->c_arena); |
|
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diff
changeset
|
1124 if (!genexps) |
| 35742 | 1125 return NULL; |
|
36065
ea083efdc96c
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parents:
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diff
changeset
|
1126 |
| 35742 | 1127 ch = CHILD(n, 1); |
| 1128 for (i = 0; i < n_fors; i++) { | |
| 1129 comprehension_ty ge; | |
| 1130 asdl_seq *t; | |
| 1131 expr_ty expression; | |
| 1132 | |
| 1133 REQ(ch, gen_for); | |
| 1134 | |
| 1135 t = ast_for_exprlist(c, CHILD(ch, 1), Store); | |
|
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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
|
1136 if (!t) |
| 35742 | 1137 return NULL; |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1138 expression = ast_for_expr(c, CHILD(ch, 3)); |
|
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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diff
changeset
|
1139 if (!expression) |
| 35742 | 1140 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
|
1141 |
|
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
|
1142 if (asdl_seq_LEN(t) == 1) |
|
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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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changeset
|
1143 ge = comprehension((expr_ty)asdl_seq_GET(t, 0), expression, |
|
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
|
1144 NULL, c->c_arena); |
| 35742 | 1145 else |
|
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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
|
1146 ge = comprehension(Tuple(t, Store, LINENO(ch), ch->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1147 c->c_arena), |
|
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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diff
changeset
|
1148 expression, NULL, c->c_arena); |
|
ea083efdc96c
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diff
changeset
|
1149 |
|
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
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changeset
|
1150 if (!ge) |
| 35742 | 1151 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
|
1152 |
| 35742 | 1153 if (NCH(ch) == 5) { |
| 1154 int j, n_ifs; | |
| 1155 asdl_seq *ifs; | |
| 1156 | |
| 1157 ch = CHILD(ch, 4); | |
| 1158 n_ifs = count_gen_ifs(ch); | |
|
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|
1159 if (n_ifs == -1) |
| 35742 | 1160 return NULL; |
|
36065
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parents:
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diff
changeset
|
1161 |
|
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diff
changeset
|
1162 ifs = asdl_seq_new(n_ifs, c->c_arena); |
|
ea083efdc96c
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parents:
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diff
changeset
|
1163 if (!ifs) |
| 35742 | 1164 return NULL; |
|
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|
1165 |
| 35742 | 1166 for (j = 0; j < n_ifs; j++) { |
| 1167 REQ(ch, gen_iter); | |
| 1168 ch = CHILD(ch, 0); | |
| 1169 REQ(ch, gen_if); | |
| 1170 | |
|
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857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1171 expression = ast_for_expr(c, CHILD(ch, 1)); |
|
36065
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parents:
36001
diff
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|
1172 if (!expression) |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1173 return NULL; |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1174 asdl_seq_SET(ifs, j, expression); |
| 35742 | 1175 if (NCH(ch) == 3) |
| 1176 ch = CHILD(ch, 2); | |
| 1177 } | |
| 1178 /* on exit, must guarantee that ch is a gen_for */ | |
| 1179 if (TYPE(ch) == gen_iter) | |
| 1180 ch = CHILD(ch, 0); | |
| 1181 ge->ifs = ifs; | |
| 1182 } | |
|
36718
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Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1183 asdl_seq_SET(genexps, i, ge); |
| 35742 | 1184 } |
| 1185 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1186 return GeneratorExp(elt, genexps, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1187 } |
| 1188 | |
| 1189 static expr_ty | |
| 1190 ast_for_atom(struct compiling *c, const node *n) | |
| 1191 { | |
| 1192 /* atom: '(' [yield_expr|testlist_gexp] ')' | '[' [listmaker] ']' | |
|
39676
eb2f70fdbf32
Remove support for backticks from the grammar and compiler.
Brett Cannon <bcannon@gmail.com>
parents:
39648
diff
changeset
|
1193 | '{' [dictmaker] '}' | NAME | NUMBER | STRING+ |
| 35742 | 1194 */ |
| 1195 node *ch = CHILD(n, 0); | |
| 1196 | |
| 1197 switch (TYPE(ch)) { | |
| 1198 case NAME: | |
| 1199 /* All names start in Load context, but may later be | |
| 1200 changed. */ | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
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diff
changeset
|
1201 return Name(NEW_IDENTIFIER(ch), Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1202 case STRING: { |
| 1203 PyObject *str = parsestrplus(c, n); | |
| 1204 if (!str) | |
| 1205 return NULL; | |
|
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parents:
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diff
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|
1206 |
|
ea083efdc96c
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diff
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|
1207 PyArena_AddPyObject(c->c_arena, str); |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1208 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1209 } |
| 1210 case NUMBER: { | |
| 1211 PyObject *pynum = parsenumber(STR(ch)); | |
| 1212 if (!pynum) | |
| 1213 return NULL; | |
|
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parents:
36001
diff
changeset
|
1214 |
|
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parents:
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diff
changeset
|
1215 PyArena_AddPyObject(c->c_arena, pynum); |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1216 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1217 } |
| 1218 case LPAR: /* some parenthesized expressions */ | |
| 1219 ch = CHILD(n, 1); | |
| 1220 | |
| 1221 if (TYPE(ch) == RPAR) | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1222 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1223 |
| 1224 if (TYPE(ch) == yield_expr) | |
| 1225 return ast_for_expr(c, ch); | |
| 1226 | |
| 1227 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == gen_for)) | |
| 1228 return ast_for_genexp(c, ch); | |
| 1229 | |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1230 return ast_for_testlist_gexp(c, ch); |
| 35742 | 1231 case LSQB: /* list (or list comprehension) */ |
| 1232 ch = CHILD(n, 1); | |
| 1233 | |
| 1234 if (TYPE(ch) == RSQB) | |
|
36786
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Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1235 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1236 |
| 1237 REQ(ch, listmaker); | |
| 1238 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { | |
| 1239 asdl_seq *elts = seq_for_testlist(c, ch); | |
| 1240 if (!elts) | |
| 1241 return NULL; | |
|
36065
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1242 |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1243 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1244 } |
| 1245 else | |
| 1246 return ast_for_listcomp(c, ch); | |
| 1247 case LBRACE: { | |
| 1248 /* dictmaker: test ':' test (',' test ':' test)* [','] */ | |
| 1249 int i, size; | |
| 1250 asdl_seq *keys, *values; | |
| 1251 | |
| 1252 ch = CHILD(n, 1); | |
| 1253 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ | |
|
36065
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1254 keys = asdl_seq_new(size, c->c_arena); |
| 35742 | 1255 if (!keys) |
| 1256 return NULL; | |
| 1257 | |
|
36065
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1258 values = asdl_seq_new(size, c->c_arena); |
|
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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parents:
36001
diff
changeset
|
1259 if (!values) |
| 35742 | 1260 return NULL; |
| 1261 | |
| 1262 for (i = 0; i < NCH(ch); i += 4) { | |
| 1263 expr_ty expression; | |
| 1264 | |
| 1265 expression = ast_for_expr(c, CHILD(ch, i)); | |
|
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
|
1266 if (!expression) |
| 35742 | 1267 return NULL; |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1268 |
| 35742 | 1269 asdl_seq_SET(keys, i / 4, expression); |
|
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
|
1270 |
| 35742 | 1271 expression = ast_for_expr(c, CHILD(ch, 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
|
1272 if (!expression) |
| 35742 | 1273 return NULL; |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
1274 |
| 35742 | 1275 asdl_seq_SET(values, i / 4, expression); |
| 1276 } | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1277 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1278 } |
| 1279 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
1280 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
| 35742 | 1281 return NULL; |
| 1282 } | |
| 1283 } | |
| 1284 | |
| 1285 static slice_ty | |
| 1286 ast_for_slice(struct compiling *c, const node *n) | |
| 1287 { | |
| 1288 node *ch; | |
| 1289 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1290 | |
| 1291 REQ(n, subscript); | |
| 1292 | |
| 1293 /* | |
| 1294 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] | |
| 1295 sliceop: ':' [test] | |
| 1296 */ | |
| 1297 ch = CHILD(n, 0); | |
| 1298 if (TYPE(ch) == DOT) | |
|
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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|
1299 return Ellipsis(c->c_arena); |
| 35742 | 1300 |
| 1301 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1302 /* 'step' variable hold no significance in terms of being used over | |
| 1303 other vars */ | |
| 1304 step = ast_for_expr(c, ch); | |
| 1305 if (!step) | |
| 1306 return NULL; | |
| 1307 | |
|
36065
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1308 return Index(step, c->c_arena); |
| 35742 | 1309 } |
| 1310 | |
| 1311 if (TYPE(ch) == test) { | |
| 1312 lower = ast_for_expr(c, ch); | |
| 1313 if (!lower) | |
| 1314 return NULL; | |
| 1315 } | |
| 1316 | |
| 1317 /* If there's an upper bound it's in the second or third position. */ | |
| 1318 if (TYPE(ch) == COLON) { | |
| 1319 if (NCH(n) > 1) { | |
| 1320 node *n2 = CHILD(n, 1); | |
| 1321 | |
| 1322 if (TYPE(n2) == test) { | |
| 1323 upper = ast_for_expr(c, n2); | |
| 1324 if (!upper) | |
| 1325 return NULL; | |
| 1326 } | |
| 1327 } | |
| 1328 } else if (NCH(n) > 2) { | |
| 1329 node *n2 = CHILD(n, 2); | |
| 1330 | |
| 1331 if (TYPE(n2) == test) { | |
| 1332 upper = ast_for_expr(c, n2); | |
| 1333 if (!upper) | |
| 1334 return NULL; | |
| 1335 } | |
| 1336 } | |
| 1337 | |
| 1338 ch = CHILD(n, NCH(n) - 1); | |
| 1339 if (TYPE(ch) == sliceop) { | |
|
37879
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Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1340 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
|
1341 /* No expression, so step is None */ |
|
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
|
1342 ch = CHILD(ch, 0); |
|
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
|
1343 step = Name(new_identifier("None", c->c_arena), Load, |
|
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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changeset
|
1344 LINENO(ch), ch->n_col_offset, c->c_arena); |
| 35742 | 1345 if (!step) |
| 1346 return NULL; | |
|
37879
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1347 } else { |
|
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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changeset
|
1348 ch = CHILD(ch, 1); |
|
f731859e9b3b
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Thomas Wouters <thomas@python.org>
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changeset
|
1349 if (TYPE(ch) == test) { |
|
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
|
1350 step = ast_for_expr(c, ch); |
|
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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1351 if (!step) |
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1352 return NULL; |
|
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|
1353 } |
| 35742 | 1354 } |
| 1355 } | |
| 1356 | |
|
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1357 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1358 } |
| 1359 | |
| 1360 static expr_ty | |
| 1361 ast_for_binop(struct compiling *c, const node *n) | |
| 1362 { | |
| 1363 /* Must account for a sequence of expressions. | |
| 1364 How should A op B op C by represented? | |
| 1365 BinOp(BinOp(A, op, B), op, C). | |
| 1366 */ | |
| 1367 | |
| 1368 int i, nops; | |
| 1369 expr_ty expr1, expr2, result; | |
|
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1370 operator_ty newoperator; |
| 35742 | 1371 |
| 1372 expr1 = ast_for_expr(c, CHILD(n, 0)); | |
| 1373 if (!expr1) | |
| 1374 return NULL; | |
| 1375 | |
| 1376 expr2 = ast_for_expr(c, CHILD(n, 2)); | |
| 1377 if (!expr2) | |
| 1378 return NULL; | |
| 1379 | |
|
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1380 newoperator = get_operator(CHILD(n, 1)); |
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1381 if (!newoperator) |
| 35742 | 1382 return NULL; |
| 1383 | |
|
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1384 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
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|
1385 c->c_arena); |
| 35742 | 1386 if (!result) |
| 1387 return NULL; | |
| 1388 | |
| 1389 nops = (NCH(n) - 1) / 2; | |
| 1390 for (i = 1; i < nops; i++) { | |
| 1391 expr_ty tmp_result, tmp; | |
| 1392 const node* next_oper = CHILD(n, i * 2 + 1); | |
| 1393 | |
|
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1394 newoperator = get_operator(next_oper); |
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1395 if (!newoperator) |
| 35742 | 1396 return NULL; |
| 1397 | |
| 1398 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); | |
| 1399 if (!tmp) | |
| 1400 return NULL; | |
| 1401 | |
|
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1402 tmp_result = BinOp(result, newoperator, tmp, |
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1403 LINENO(next_oper), next_oper->n_col_offset, |
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1404 c->c_arena); |
| 35742 | 1405 if (!tmp) |
| 1406 return NULL; | |
| 1407 result = tmp_result; | |
| 1408 } | |
| 1409 return result; | |
| 1410 } | |
| 1411 | |
|
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1412 static expr_ty |
|
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1413 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
|
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1414 { |
|
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1415 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
|
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1416 subscriptlist: subscript (',' subscript)* [','] |
|
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1417 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
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1418 */ |
|
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|
1419 REQ(n, trailer); |
|
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1420 if (TYPE(CHILD(n, 0)) == LPAR) { |
|
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|
1421 if (NCH(n) == 2) |
|
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1422 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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1423 n->n_col_offset, c->c_arena); |
|
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1424 else |
|
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1425 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
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1426 } |
|
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1427 else if (TYPE(CHILD(n, 0)) == DOT ) { |
|
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1428 return Attribute(left_expr, NEW_IDENTIFIER(CHILD(n, 1)), Load, |
|
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1429 LINENO(n), n->n_col_offset, c->c_arena); |
|
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1430 } |
|
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1431 else { |
|
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1432 REQ(CHILD(n, 0), LSQB); |
|
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1433 REQ(CHILD(n, 2), RSQB); |
|
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1434 n = CHILD(n, 1); |
|
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1435 if (NCH(n) == 1) { |
|
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1436 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
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1437 if (!slc) |
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|
1438 return NULL; |
|
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1439 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
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1440 c->c_arena); |
|
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1441 } |
|
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1442 else { |
|
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1443 /* The grammar is ambiguous here. The ambiguity is resolved |
|
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1444 by treating the sequence as a tuple literal if there are |
|
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1445 no slice features. |
|
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|
1446 */ |
|
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|
1447 int j; |
|
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|
1448 slice_ty slc; |
|
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|
1449 expr_ty e; |
|
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|
1450 bool simple = true; |
|
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|
1451 asdl_seq *slices, *elts; |
|
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1452 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
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|
1453 if (!slices) |
|
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1454 return NULL; |
|
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|
1455 for (j = 0; j < NCH(n); j += 2) { |
|
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|
1456 slc = ast_for_slice(c, CHILD(n, j)); |
|
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|
1457 if (!slc) |
|
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|
1458 return NULL; |
|
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|
1459 if (slc->kind != Index_kind) |
|
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|
1460 simple = false; |
|
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|
1461 asdl_seq_SET(slices, j / 2, slc); |
|
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|
1462 } |
|
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|
1463 if (!simple) { |
|
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|
1464 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
|
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|
1465 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1466 } |
|
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|
1467 /* extract Index values and put them in a Tuple */ |
|
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|
1468 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
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|
1469 if (!elts) |
|
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|
1470 return NULL; |
|
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|
1471 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
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|
1472 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
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|
1473 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
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1474 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
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|
1475 } |
|
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|
1476 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1477 if (!e) |
|
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|
1478 return NULL; |
|
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|
1479 return Subscript(left_expr, Index(e, c->c_arena), |
|
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|
1480 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1481 } |
|
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|
1482 } |
|
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|
1483 } |
|
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1484 |
|
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|
1485 static expr_ty |
|
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1486 ast_for_factor(struct compiling *c, const node *n) |
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1487 { |
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1488 node *pfactor, *ppower, *patom, *pnum; |
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|
1489 expr_ty expression; |
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1490 |
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|
1491 /* If the unary - operator is applied to a constant, don't generate |
|
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|
1492 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
|
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1493 constant. The peephole optimizer already does something like |
|
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1494 this but it doesn't handle the case where the constant is |
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1495 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
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1496 PyLongObject. |
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1497 */ |
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1498 if (TYPE(CHILD(n, 0)) == MINUS |
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1499 && NCH(n) == 2 |
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|
1500 && TYPE((pfactor = CHILD(n, 1))) == factor |
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|
1501 && NCH(pfactor) == 1 |
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1502 && TYPE((ppower = CHILD(pfactor, 0))) == power |
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1503 && NCH(ppower) == 1 |
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1504 && TYPE((patom = CHILD(ppower, 0))) == atom |
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1505 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
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1506 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
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1507 if (s == NULL) |
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1508 return NULL; |
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1509 s[0] = '-'; |
|
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1510 strcpy(s + 1, STR(pnum)); |
|
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1511 PyObject_FREE(STR(pnum)); |
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1512 STR(pnum) = s; |
|
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1513 return ast_for_atom(c, patom); |
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1514 } |
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1515 |
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1516 expression = ast_for_expr(c, CHILD(n, 1)); |
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1517 if (!expression) |
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1518 return NULL; |
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1519 |
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1520 switch (TYPE(CHILD(n, 0))) { |
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1521 case PLUS: |
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1522 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
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1523 c->c_arena); |
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1524 case MINUS: |
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1525 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
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1526 c->c_arena); |
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1527 case TILDE: |
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1528 return UnaryOp(Invert, expression, LINENO(n), |
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1529 n->n_col_offset, c->c_arena); |
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1530 } |
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1531 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
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1532 TYPE(CHILD(n, 0))); |
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1533 return NULL; |
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1534 } |
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1535 |
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|
1536 static expr_ty |
|
35799
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|
1537 ast_for_power(struct compiling *c, const node *n) |
|
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1538 { |
|
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|
1539 /* power: atom trailer* ('**' factor)* |
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1540 */ |
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1541 int i; |
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1542 expr_ty e, tmp; |
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|
1543 REQ(n, power); |
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|
1544 e = ast_for_atom(c, CHILD(n, 0)); |
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|
1545 if (!e) |
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1546 return NULL; |
|
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|
1547 if (NCH(n) == 1) |
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1548 return e; |
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|
1549 for (i = 1; i < NCH(n); i++) { |
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1550 node *ch = CHILD(n, i); |
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1551 if (TYPE(ch) != trailer) |
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1552 break; |
|
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|
1553 tmp = ast_for_trailer(c, ch, e); |
|
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|
1554 if (!tmp) |
|
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|
1555 return NULL; |
|
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|
1556 tmp->lineno = e->lineno; |
|
57322cb2ca11
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1557 tmp->col_offset = e->col_offset; |
|
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|
1558 e = tmp; |
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1559 } |
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1560 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
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|
1561 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
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|
1562 if (!f) |
|
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|
1563 return NULL; |
|
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|
1564 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1565 if (!tmp) |
|
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|
1566 return NULL; |
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|
1567 e = tmp; |
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|
1568 } |
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|
1569 return e; |
|
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|
1570 } |
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|
1571 |
| 35742 | 1572 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1573 */ | |
| 1574 | |
| 1575 static expr_ty | |
| 1576 ast_for_expr(struct compiling *c, const node *n) | |
| 1577 { | |
| 1578 /* handle the full range of simple expressions | |
|
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1579 test: or_test ['if' or_test 'else' test] | lambdef |
|
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1580 or_test: and_test ('or' and_test)* |
| 35742 | 1581 and_test: not_test ('and' not_test)* |
| 1582 not_test: 'not' not_test | comparison | |
| 1583 comparison: expr (comp_op expr)* | |
| 1584 expr: xor_expr ('|' xor_expr)* | |
| 1585 xor_expr: and_expr ('^' and_expr)* | |
| 1586 and_expr: shift_expr ('&' shift_expr)* | |
| 1587 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1588 arith_expr: term (('+'|'-') term)* | |
| 1589 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1590 factor: ('+'|'-'|'~') factor | power | |
| 1591 power: atom trailer* ('**' factor)* | |
|
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1592 |
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1593 As well as modified versions that exist for backward compatibility, |
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1594 to explicitly allow: |
|
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1595 [ x for x in lambda: 0, lambda: 1 ] |
|
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1596 (which would be ambiguous without these extra rules) |
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1597 |
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|
1598 old_test: or_test | old_lambdef |
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1599 old_lambdef: 'lambda' [vararglist] ':' old_test |
|
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|
1600 |
| 35742 | 1601 */ |
| 1602 | |
| 1603 asdl_seq *seq; | |
| 1604 int i; | |
| 1605 | |
| 1606 loop: | |
| 1607 switch (TYPE(n)) { | |
| 1608 case test: | |
|
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1609 case old_test: |
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1610 if (TYPE(CHILD(n, 0)) == lambdef || |
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|
1611 TYPE(CHILD(n, 0)) == old_lambdef) |
| 35742 | 1612 return ast_for_lambdef(c, CHILD(n, 0)); |
|
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|
1613 else if (NCH(n) > 1) |
|
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|
1614 return ast_for_ifexpr(c, n); |
|
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|
1615 /* Fallthrough */ |
|
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|
1616 case or_test: |
| 35742 | 1617 case and_test: |
| 1618 if (NCH(n) == 1) { | |
| 1619 n = CHILD(n, 0); | |
| 1620 goto loop; | |
| 1621 } | |
|
36065
ea083efdc96c
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|
1622 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1623 if (!seq) |
| 1624 return NULL; | |
| 1625 for (i = 0; i < NCH(n); i += 2) { | |
| 1626 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1627 if (!e) | |
| 1628 return NULL; | |
| 1629 asdl_seq_SET(seq, i / 2, e); | |
| 1630 } | |
| 1631 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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diff
changeset
|
1632 return BoolOp(And, 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>
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changeset
|
1633 c->c_arena); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1634 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1635 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1636 case not_test: |
| 1637 if (NCH(n) == 1) { | |
| 1638 n = CHILD(n, 0); | |
| 1639 goto loop; | |
| 1640 } | |
| 1641 else { | |
| 1642 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1643 if (!expression) | |
| 1644 return NULL; | |
| 1645 | |
|
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
|
1646 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
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1647 c->c_arena); |
| 35742 | 1648 } |
| 1649 case comparison: | |
| 1650 if (NCH(n) == 1) { | |
| 1651 n = CHILD(n, 0); | |
| 1652 goto loop; | |
| 1653 } | |
| 1654 else { | |
| 1655 expr_ty expression; | |
|
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
|
1656 asdl_int_seq *ops; |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1657 asdl_seq *cmps; |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1658 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1659 if (!ops) |
| 1660 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
|
1661 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1662 if (!cmps) { |
| 1663 return NULL; | |
| 1664 } | |
| 1665 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:
36877
diff
changeset
|
1666 cmpop_ty newoperator; |
| 35742 | 1667 |
|
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
|
1668 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>
parents:
36877
diff
changeset
|
1669 if (!newoperator) { |
| 35742 | 1670 return NULL; |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
1671 } |
| 35742 | 1672 |
| 1673 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:
35870
diff
changeset
|
1674 if (!expression) { |
| 35742 | 1675 return NULL; |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
1676 } |
| 35742 | 1677 |
|
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
|
1678 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1679 asdl_seq_SET(cmps, i / 2, expression); |
| 1680 } | |
| 1681 expression = ast_for_expr(c, CHILD(n, 0)); | |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
1682 if (!expression) { |
| 35742 | 1683 return NULL; |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
1684 } |
| 35742 | 1685 |
|
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
|
1686 return Compare(expression, ops, cmps, LINENO(n), |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1687 n->n_col_offset, c->c_arena); |
| 35742 | 1688 } |
| 1689 break; | |
| 1690 | |
| 1691 /* The next five cases all handle BinOps. The main body of code | |
| 1692 is the same in each case, but the switch turned inside out to | |
| 1693 reuse the code for each type of operator. | |
| 1694 */ | |
| 1695 case expr: | |
| 1696 case xor_expr: | |
| 1697 case and_expr: | |
| 1698 case shift_expr: | |
| 1699 case arith_expr: | |
| 1700 case term: | |
| 1701 if (NCH(n) == 1) { | |
| 1702 n = CHILD(n, 0); | |
| 1703 goto loop; | |
| 1704 } | |
| 1705 return ast_for_binop(c, n); | |
| 1706 case yield_expr: { | |
| 1707 expr_ty exp = NULL; | |
| 1708 if (NCH(n) == 2) { | |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1709 exp = ast_for_testlist(c, CHILD(n, 1)); |
| 35742 | 1710 if (!exp) |
| 1711 return NULL; | |
| 1712 } | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1713 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1714 } |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
1715 case factor: |
| 35742 | 1716 if (NCH(n) == 1) { |
| 1717 n = CHILD(n, 0); | |
| 1718 goto loop; | |
| 1719 } | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
1720 return ast_for_factor(c, n); |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1721 case power: |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1722 return ast_for_power(c, n); |
| 35742 | 1723 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
1724 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1725 return NULL; |
| 1726 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1727 /* should never get here unless if error is set */ |
| 35742 | 1728 return NULL; |
| 1729 } | |
| 1730 | |
| 1731 static expr_ty | |
| 1732 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1733 { | |
| 1734 /* | |
| 1735 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1736 | '**' test) | |
| 1737 argument: [test '='] test [gen_for] # Really [keyword '='] test | |
| 1738 */ | |
| 1739 | |
| 1740 int i, nargs, nkeywords, ngens; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1741 asdl_seq *args; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1742 asdl_seq *keywords; |
| 35742 | 1743 expr_ty vararg = NULL, kwarg = NULL; |
| 1744 | |
| 1745 REQ(n, arglist); | |
| 1746 | |
| 1747 nargs = 0; | |
| 1748 nkeywords = 0; | |
| 1749 ngens = 0; | |
| 1750 for (i = 0; i < NCH(n); i++) { | |
| 1751 node *ch = CHILD(n, i); | |
| 1752 if (TYPE(ch) == argument) { | |
| 1753 if (NCH(ch) == 1) | |
| 1754 nargs++; | |
| 1755 else if (TYPE(CHILD(ch, 1)) == gen_for) | |
| 1756 ngens++; | |
| 1757 else | |
| 1758 nkeywords++; | |
| 1759 } | |
| 1760 } | |
| 1761 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
1762 ast_error(n, "Generator expression must be parenthesized " |
| 35742 | 1763 "if not sole argument"); |
| 1764 return NULL; | |
| 1765 } | |
| 1766 | |
| 1767 if (nargs + nkeywords + ngens > 255) { | |
| 1768 ast_error(n, "more than 255 arguments"); | |
| 1769 return NULL; | |
| 1770 } | |
| 1771 | |
|
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
|
1772 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1773 if (!args) |
|
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
|
1774 return NULL; |
|
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
|
1775 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1776 if (!keywords) |
|
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
|
1777 return NULL; |
| 35742 | 1778 nargs = 0; |
| 1779 nkeywords = 0; | |
| 1780 for (i = 0; i < NCH(n); i++) { | |
| 1781 node *ch = CHILD(n, i); | |
| 1782 if (TYPE(ch) == argument) { | |
| 1783 expr_ty e; | |
| 1784 if (NCH(ch) == 1) { | |
|
38453
29ae5e0fc348
Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents:
37879
diff
changeset
|
1785 if (nkeywords) { |
|
29ae5e0fc348
Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents:
37879
diff
changeset
|
1786 ast_error(CHILD(ch, 0), |
|
29ae5e0fc348
Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents:
37879
diff
changeset
|
1787 "non-keyword arg after keyword arg"); |
|
29ae5e0fc348
Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents:
37879
diff
changeset
|
1788 return NULL; |
|
29ae5e0fc348
Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents:
37879
diff
changeset
|
1789 } |
| 35742 | 1790 e = ast_for_expr(c, CHILD(ch, 0)); |
| 1791 if (!e) | |
|
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
|
1792 return NULL; |
| 35742 | 1793 asdl_seq_SET(args, nargs++, e); |
| 1794 } | |
| 1795 else if (TYPE(CHILD(ch, 1)) == gen_for) { | |
| 1796 e = ast_for_genexp(c, ch); | |
| 1797 if (!e) | |
|
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
|
1798 return NULL; |
| 35742 | 1799 asdl_seq_SET(args, nargs++, e); |
| 1800 } | |
| 1801 else { | |
| 1802 keyword_ty kw; | |
| 1803 identifier key; | |
| 1804 | |
| 1805 /* CHILD(ch, 0) is test, but must be an identifier? */ | |
| 1806 e = ast_for_expr(c, CHILD(ch, 0)); | |
| 1807 if (!e) | |
|
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
|
1808 return NULL; |
| 35742 | 1809 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1810 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 1811 * SF bug 132313 points out that complaining about a keyword | |
| 1812 * then is very confusing. | |
| 1813 */ | |
| 1814 if (e->kind == Lambda_kind) { | |
| 1815 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
|
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
|
1816 return NULL; |
| 35742 | 1817 } else if (e->kind != Name_kind) { |
| 1818 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
|
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
|
1819 return NULL; |
| 35742 | 1820 } |
| 1821 key = e->v.Name.id; | |
| 1822 e = ast_for_expr(c, CHILD(ch, 2)); | |
| 1823 if (!e) | |
|
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
|
1824 return NULL; |
|
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
|
1825 kw = keyword(key, e, c->c_arena); |
| 35742 | 1826 if (!kw) |
|
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
|
1827 return NULL; |
| 35742 | 1828 asdl_seq_SET(keywords, nkeywords++, kw); |
| 1829 } | |
| 1830 } | |
| 1831 else if (TYPE(ch) == STAR) { | |
| 1832 vararg = ast_for_expr(c, CHILD(n, i+1)); | |
| 1833 i++; | |
| 1834 } | |
| 1835 else if (TYPE(ch) == DOUBLESTAR) { | |
| 1836 kwarg = ast_for_expr(c, CHILD(n, i+1)); | |
| 1837 i++; | |
| 1838 } | |
| 1839 } | |
| 1840 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1841 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 1842 } |
| 1843 | |
| 1844 static expr_ty | |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1845 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 1846 { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1847 /* testlist_gexp: test (',' test)* [','] */ |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1848 /* testlist: test (',' test)* [','] */ |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1849 /* testlist_safe: test (',' test)+ [','] */ |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1850 /* testlist1: test (',' test)* */ |
| 35742 | 1851 assert(NCH(n) > 0); |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1852 if (TYPE(n) == testlist_gexp) { |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1853 if (NCH(n) > 1) |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1854 assert(TYPE(CHILD(n, 1)) != gen_for); |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1855 } |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1856 else { |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1857 assert(TYPE(n) == testlist || |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1858 TYPE(n) == testlist_safe || |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1859 TYPE(n) == testlist1); |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1860 } |
| 35742 | 1861 if (NCH(n) == 1) |
| 1862 return ast_for_expr(c, CHILD(n, 0)); | |
| 1863 else { | |
| 1864 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 1865 if (!tmp) | |
| 1866 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1867 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1868 } |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1869 } |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1870 |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1871 static expr_ty |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1872 ast_for_testlist_gexp(struct compiling *c, const node* n) |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1873 { |
|
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1874 /* testlist_gexp: test ( gen_for | (',' test)* [','] ) */ |
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1875 /* argument: test [ gen_for ] */ |
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1876 assert(TYPE(n) == testlist_gexp || TYPE(n) == argument); |
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1877 if (NCH(n) > 1 && TYPE(CHILD(n, 1)) == gen_for) |
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1878 return ast_for_genexp(c, n); |
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1879 return ast_for_testlist(c, n); |
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1880 } |
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1881 |
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1882 /* like ast_for_testlist() but returns a sequence */ |
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1883 static asdl_seq* |
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1884 ast_for_class_bases(struct compiling *c, const node* n) |
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1885 { |
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1886 /* testlist: test (',' test)* [','] */ |
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1887 assert(NCH(n) > 0); |
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1888 REQ(n, testlist); |
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1889 if (NCH(n) == 1) { |
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1890 expr_ty base; |
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1891 asdl_seq *bases = asdl_seq_new(1, c->c_arena); |
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1892 if (!bases) |
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1893 return NULL; |
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1894 base = ast_for_expr(c, CHILD(n, 0)); |
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1895 if (!base) |
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1896 return NULL; |
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1897 asdl_seq_SET(bases, 0, base); |
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1898 return bases; |
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1899 } |
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1900 |
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1901 return seq_for_testlist(c, n); |
| 35742 | 1902 } |
| 1903 | |
| 1904 static stmt_ty | |
| 1905 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 1906 { | |
| 1907 REQ(n, expr_stmt); | |
| 1908 /* expr_stmt: testlist (augassign (yield_expr|testlist) | |
| 1909 | ('=' (yield_expr|testlist))*) | |
| 1910 testlist: test (',' test)* [','] | |
| 1911 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | |
| 1912 | '<<=' | '>>=' | '**=' | '//=' | |
| 1913 test: ... here starts the operator precendence dance | |
| 1914 */ | |
| 1915 | |
| 1916 if (NCH(n) == 1) { | |
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1917 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 1918 if (!e) |
| 1919 return NULL; | |
| 1920 | |
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1921 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1922 } |
| 1923 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 1924 expr_ty expr1, expr2; | |
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1925 operator_ty newoperator; |
| 35742 | 1926 node *ch = CHILD(n, 0); |
| 1927 | |
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1928 expr1 = ast_for_testlist(c, ch); |
| 35742 | 1929 if (!expr1) |
| 1930 return NULL; | |
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1931 /* TODO(nas): Remove duplicated error checks (set_context does it) */ |
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1932 switch (expr1->kind) { |
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1933 case GeneratorExp_kind: |
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1934 ast_error(ch, "augmented assignment to generator " |
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1935 "expression not possible"); |
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1936 return NULL; |
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1937 case Yield_kind: |
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1938 ast_error(ch, "augmented assignment to yield " |
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1939 "expression not possible"); |
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1940 return NULL; |
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1941 case Name_kind: { |
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1942 const char *var_name = PyString_AS_STRING(expr1->v.Name.id); |
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1943 if (var_name[0] == 'N' && !strcmp(var_name, "None")) { |
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1944 ast_error(ch, "assignment to None"); |
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1945 return NULL; |
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1946 } |
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1947 break; |
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1948 } |
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1949 case Attribute_kind: |
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1950 case Subscript_kind: |
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1951 break; |
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1952 default: |
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1953 ast_error(ch, "illegal expression for augmented " |
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1954 "assignment"); |
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1955 return NULL; |
| 35742 | 1956 } |
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1957 set_context(expr1, Store, ch); |
| 35742 | 1958 |
| 1959 ch = CHILD(n, 2); | |
| 1960 if (TYPE(ch) == testlist) | |
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1961 expr2 = ast_for_testlist(c, ch); |
| 35742 | 1962 else |
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1963 expr2 = ast_for_expr(c, ch); |
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1964 if (!expr2) |
| 35742 | 1965 return NULL; |
| 1966 | |
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1967 newoperator = ast_for_augassign(CHILD(n, 1)); |
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1968 if (!newoperator) |
| 35742 | 1969 return NULL; |
| 1970 | |
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1971 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1972 } |
| 1973 else { | |
| 1974 int i; | |
| 1975 asdl_seq *targets; | |
| 1976 node *value; | |
| 1977 expr_ty expression; | |
| 1978 | |
| 1979 /* a normal assignment */ | |
| 1980 REQ(CHILD(n, 1), EQUAL); | |
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1981 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1982 if (!targets) |
| 1983 return NULL; | |
| 1984 for (i = 0; i < NCH(n) - 2; i += 2) { | |
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1985 expr_ty e; |
| 35742 | 1986 node *ch = CHILD(n, i); |
| 1987 if (TYPE(ch) == yield_expr) { | |
| 1988 ast_error(ch, "assignment to yield expression not possible"); | |
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1989 return NULL; |
| 35742 | 1990 } |
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1991 e = ast_for_testlist(c, ch); |
| 35742 | 1992 |
| 1993 /* set context to assign */ | |
| 1994 if (!e) | |
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1995 return NULL; |
| 35742 | 1996 |
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1997 if (!set_context(e, Store, CHILD(n, i))) |
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1998 return NULL; |
| 35742 | 1999 |
| 2000 asdl_seq_SET(targets, i / 2, e); | |
| 2001 } | |
| 2002 value = CHILD(n, NCH(n) - 1); | |
| 2003 if (TYPE(value) == testlist) | |
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2004 expression = ast_for_testlist(c, value); |
| 35742 | 2005 else |
| 2006 expression = ast_for_expr(c, value); | |
| 2007 if (!expression) | |
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2008 return NULL; |
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2009 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2010 } |
| 2011 } | |
| 2012 | |
| 2013 static stmt_ty | |
| 2014 ast_for_print_stmt(struct compiling *c, const node *n) | |
| 2015 { | |
| 2016 /* print_stmt: 'print' ( [ test (',' test)* [','] ] | |
| 2017 | '>>' test [ (',' test)+ [','] ] ) | |
| 2018 */ | |
| 2019 expr_ty dest = NULL, expression; | |
| 2020 asdl_seq *seq; | |
| 2021 bool nl; | |
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2022 int i, j, start = 1; |
| 35742 | 2023 |
| 2024 REQ(n, print_stmt); | |
| 2025 if (NCH(n) >= 2 && TYPE(CHILD(n, 1)) == RIGHTSHIFT) { | |
| 2026 dest = ast_for_expr(c, CHILD(n, 2)); | |
| 2027 if (!dest) | |
| 2028 return NULL; | |
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2029 start = 4; |
| 35742 | 2030 } |
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2031 seq = asdl_seq_new((NCH(n) + 1 - start) / 2, c->c_arena); |
| 35742 | 2032 if (!seq) |
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2033 return NULL; |
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2034 for (i = start, j = 0; i < NCH(n); i += 2, ++j) { |
| 35742 | 2035 expression = ast_for_expr(c, CHILD(n, i)); |
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2036 if (!expression) |
| 35742 | 2037 return NULL; |
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2038 asdl_seq_SET(seq, j, expression); |
| 35742 | 2039 } |
| 2040 nl = (TYPE(CHILD(n, NCH(n) - 1)) == COMMA) ? false : true; | |
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2041 return Print(dest, seq, nl, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2042 } |
| 2043 | |
| 2044 static asdl_seq * | |
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2045 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2046 { |
| 2047 asdl_seq *seq; | |
| 2048 int i; | |
| 2049 expr_ty e; | |
| 2050 | |
| 2051 REQ(n, exprlist); | |
| 2052 | |
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2053 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2054 if (!seq) |
| 2055 return NULL; | |
| 2056 for (i = 0; i < NCH(n); i += 2) { | |
| 2057 e = ast_for_expr(c, CHILD(n, i)); | |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
2058 if (!e) |
|
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
|
2059 return NULL; |
|
35875
086caccfff0e
Fix another memory leak or two (one real, one potential)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35874
diff
changeset
|
2060 asdl_seq_SET(seq, i / 2, e); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2061 if (context && !set_context(e, context, CHILD(n, i))) |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2062 return NULL; |
| 35742 | 2063 } |
| 2064 return seq; | |
| 2065 } | |
| 2066 | |
| 2067 static stmt_ty | |
| 2068 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2069 { | |
| 2070 asdl_seq *expr_list; | |
| 2071 | |
| 2072 /* del_stmt: 'del' exprlist */ | |
| 2073 REQ(n, del_stmt); | |
| 2074 | |
| 2075 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2076 if (!expr_list) | |
| 2077 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2078 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2079 } |
| 2080 | |
| 2081 static stmt_ty | |
| 2082 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2083 { | |
| 2084 /* | |
| 2085 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2086 | yield_stmt | |
| 2087 break_stmt: 'break' | |
| 2088 continue_stmt: 'continue' | |
| 2089 return_stmt: 'return' [testlist] | |
| 2090 yield_stmt: yield_expr | |
| 2091 yield_expr: 'yield' testlist | |
| 2092 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2093 */ | |
| 2094 node *ch; | |
| 2095 | |
| 2096 REQ(n, flow_stmt); | |
| 2097 ch = CHILD(n, 0); | |
| 2098 switch (TYPE(ch)) { | |
| 2099 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
|
2100 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2101 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
|
2102 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2103 case yield_stmt: { /* will reduce to yield_expr */ |
| 2104 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); | |
| 2105 if (!exp) | |
| 2106 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2107 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2108 } |
| 2109 case return_stmt: | |
| 2110 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
|
2111 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2112 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2113 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2114 if (!expression) |
| 2115 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2116 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2117 } |
| 2118 case raise_stmt: | |
| 2119 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
|
2120 return Raise(NULL, NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2121 else if (NCH(ch) == 2) { |
| 2122 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); | |
| 2123 if (!expression) | |
| 2124 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2125 return Raise(expression, NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2126 } |
| 2127 else if (NCH(ch) == 4) { | |
| 2128 expr_ty expr1, expr2; | |
| 2129 | |
| 2130 expr1 = ast_for_expr(c, CHILD(ch, 1)); | |
| 2131 if (!expr1) | |
| 2132 return NULL; | |
| 2133 expr2 = ast_for_expr(c, CHILD(ch, 3)); | |
| 2134 if (!expr2) | |
| 2135 return NULL; | |
| 2136 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2137 return Raise(expr1, expr2, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2138 } |
| 2139 else if (NCH(ch) == 6) { | |
| 2140 expr_ty expr1, expr2, expr3; | |
| 2141 | |
| 2142 expr1 = ast_for_expr(c, CHILD(ch, 1)); | |
| 2143 if (!expr1) | |
| 2144 return NULL; | |
| 2145 expr2 = ast_for_expr(c, CHILD(ch, 3)); | |
| 2146 if (!expr2) | |
| 2147 return NULL; | |
| 2148 expr3 = ast_for_expr(c, CHILD(ch, 5)); | |
| 2149 if (!expr3) | |
| 2150 return NULL; | |
| 2151 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2152 return Raise(expr1, expr2, expr3, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2153 } |
| 2154 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2155 PyErr_Format(PyExc_SystemError, |
| 35742 | 2156 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2157 return NULL; | |
| 2158 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2159 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2160 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
|
2161 return NULL; |
| 35742 | 2162 } |
| 2163 | |
| 2164 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
|
2165 alias_for_import_name(struct compiling *c, const node *n) |
| 35742 | 2166 { |
| 2167 /* | |
|
36742
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
36718
diff
changeset
|
2168 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
|
2169 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2170 dotted_name: NAME ('.' NAME)* |
| 2171 */ | |
|
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
|
2172 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
|
2173 |
| 35742 | 2174 loop: |
| 2175 switch (TYPE(n)) { | |
| 2176 case import_as_name: | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2177 str = NULL; |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2178 if (NCH(n) == 3) { |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2179 if (strcmp(STR(CHILD(n, 1)), "as") != 0) { |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2180 ast_error(n, "must use 'as' in import"); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
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38453
diff
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|
2181 return NULL; |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2182 } |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2183 str = NEW_IDENTIFIER(CHILD(n, 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2184 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2185 return alias(NEW_IDENTIFIER(CHILD(n, 0)), str, c->c_arena); |
| 35742 | 2186 case dotted_as_name: |
| 2187 if (NCH(n) == 1) { | |
| 2188 n = CHILD(n, 0); | |
| 2189 goto loop; | |
| 2190 } | |
| 2191 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
|
2192 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
|
2193 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2194 return NULL; |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2195 if (strcmp(STR(CHILD(n, 1)), "as") != 0) { |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2196 ast_error(n, "must use 'as' in import"); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2197 return NULL; |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2198 } |
| 35742 | 2199 assert(!a->asname); |
| 2200 a->asname = NEW_IDENTIFIER(CHILD(n, 2)); | |
| 2201 return a; | |
| 2202 } | |
| 2203 break; | |
| 2204 case dotted_name: | |
| 2205 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
|
2206 return alias(NEW_IDENTIFIER(CHILD(n, 0)), NULL, c->c_arena); |
| 35742 | 2207 else { |
| 2208 /* 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
|
2209 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2210 size_t len; |
| 35742 | 2211 char *s; |
| 2212 | |
| 2213 len = 0; | |
| 2214 for (i = 0; i < NCH(n); i += 2) | |
| 2215 /* length of string plus one for the dot */ | |
| 2216 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2217 len--; /* the last name doesn't have a dot */ | |
| 2218 str = PyString_FromStringAndSize(NULL, len); | |
| 2219 if (!str) | |
| 2220 return NULL; | |
| 2221 s = PyString_AS_STRING(str); | |
| 2222 if (!s) | |
| 2223 return NULL; | |
| 2224 for (i = 0; i < NCH(n); i += 2) { | |
| 2225 char *sch = STR(CHILD(n, i)); | |
| 2226 strcpy(s, STR(CHILD(n, i))); | |
| 2227 s += strlen(sch); | |
| 2228 *s++ = '.'; | |
| 2229 } | |
| 2230 --s; | |
| 2231 *s = '\0'; | |
| 2232 PyString_InternInPlace(&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
|
2233 PyArena_AddPyObject(c->c_arena, 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
|
2234 return alias(str, NULL, c->c_arena); |
| 35742 | 2235 } |
| 2236 break; | |
| 2237 case 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
|
2238 str = PyString_InternFromString("*"); |
|
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
|
2239 PyArena_AddPyObject(c->c_arena, 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
|
2240 return alias(str, NULL, c->c_arena); |
| 35742 | 2241 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2242 PyErr_Format(PyExc_SystemError, |
| 35742 | 2243 "unexpected import name: %d", TYPE(n)); |
| 2244 return NULL; | |
| 2245 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2246 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2247 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2248 return NULL; |
| 2249 } | |
| 2250 | |
| 2251 static stmt_ty | |
| 2252 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2253 { | |
| 2254 /* | |
| 2255 import_stmt: import_name | import_from | |
| 2256 import_name: 'import' dotted_as_names | |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2257 import_from: 'from' ('.'* dotted_name | '.') 'import' |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2258 ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2259 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2260 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2261 int col_offset; |
| 35742 | 2262 int i; |
| 2263 asdl_seq *aliases; | |
| 2264 | |
| 2265 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
|
2266 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2267 col_offset = n->n_col_offset; |
| 35742 | 2268 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2269 if (TYPE(n) == import_name) { |
| 35742 | 2270 n = CHILD(n, 1); |
|
35771
044d8e0f65f2
Add an assert.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35759
diff
changeset
|
2271 REQ(n, dotted_as_names); |
|
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
|
2272 aliases = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2273 if (!aliases) |
| 2274 return NULL; | |
| 2275 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
|
2276 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
|
2277 if (!import_alias) |
| 35742 | 2278 return NULL; |
| 2279 asdl_seq_SET(aliases, i / 2, import_alias); | |
| 2280 } | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2281 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2282 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2283 else if (TYPE(n) == import_from) { |
| 35742 | 2284 int n_children; |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2285 int idx, ndots = 0; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2286 alias_ty mod = NULL; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2287 identifier modname; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2288 |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2289 /* 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
|
2290 optional module name */ |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2291 for (idx = 1; idx < NCH(n); idx++) { |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2292 if (TYPE(CHILD(n, idx)) == dotted_name) { |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2293 mod = alias_for_import_name(c, CHILD(n, idx)); |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2294 idx++; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2295 break; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2296 } else if (TYPE(CHILD(n, idx)) != DOT) { |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2297 break; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2298 } |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2299 ndots++; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2300 } |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2301 idx++; /* skip over the 'import' keyword */ |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2302 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2303 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2304 /* from ... import * */ |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2305 n = CHILD(n, idx); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2306 n_children = 1; |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2307 if (ndots) { |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2308 ast_error(n, "'import *' not allowed with 'from .'"); |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2309 return NULL; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2310 } |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2311 break; |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2312 case LPAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2313 /* from ... import (x, y, z) */ |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2314 n = CHILD(n, idx + 1); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2315 n_children = NCH(n); |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2316 break; |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2317 case import_as_names: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2318 /* from ... import x, y, z */ |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2319 n = CHILD(n, idx); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2320 n_children = NCH(n); |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2321 if (n_children % 2 == 0) { |
| 35742 | 2322 ast_error(n, "trailing comma not allowed without" |
| 2323 " surrounding parentheses"); | |
| 2324 return NULL; | |
| 2325 } | |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2326 break; |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2327 default: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2328 ast_error(n, "Unexpected node-type in from-import"); |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2329 return NULL; |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
2330 } |
| 35742 | 2331 |
|
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
|
2332 aliases = asdl_seq_new((n_children + 1) / 2, c->c_arena); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2333 if (!aliases) |
| 35742 | 2334 return NULL; |
| 2335 | |
| 2336 /* 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
|
2337 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
|
2338 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
|
2339 if (!import_alias) |
| 35742 | 2340 return NULL; |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2341 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2342 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2343 else { |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2344 for (i = 0; i < NCH(n); i += 2) { |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2345 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
|
2346 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2347 return NULL; |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2348 asdl_seq_SET(aliases, i / 2, import_alias); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2349 } |
| 35742 | 2350 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2351 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2352 modname = mod->name; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2353 else |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2354 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
|
2355 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
|
2356 c->c_arena); |
| 35742 | 2357 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2358 PyErr_Format(PyExc_SystemError, |
| 35742 | 2359 "unknown import statement: starts with command '%s'", |
| 2360 STR(CHILD(n, 0))); | |
| 2361 return NULL; | |
| 2362 } | |
| 2363 | |
| 2364 static stmt_ty | |
| 2365 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2366 { | |
| 2367 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2368 identifier name; | |
| 2369 asdl_seq *s; | |
| 2370 int i; | |
| 2371 | |
| 2372 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
|
2373 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2374 if (!s) |
| 2375 return NULL; | |
| 2376 for (i = 1; i < NCH(n); i += 2) { | |
| 2377 name = NEW_IDENTIFIER(CHILD(n, i)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2378 if (!name) |
| 35742 | 2379 return NULL; |
| 2380 asdl_seq_SET(s, i / 2, name); | |
| 2381 } | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2382 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2383 } |
| 2384 | |
| 2385 static stmt_ty | |
| 2386 ast_for_exec_stmt(struct compiling *c, const node *n) | |
| 2387 { | |
| 2388 expr_ty expr1, globals = NULL, locals = NULL; | |
| 2389 int n_children = NCH(n); | |
| 2390 if (n_children != 2 && n_children != 4 && n_children != 6) { | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2391 PyErr_Format(PyExc_SystemError, |
| 35742 | 2392 "poorly formed 'exec' statement: %d parts to statement", |
| 2393 n_children); | |
| 2394 return NULL; | |
| 2395 } | |
| 2396 | |
| 2397 /* exec_stmt: 'exec' expr ['in' test [',' test]] */ | |
| 2398 REQ(n, exec_stmt); | |
| 2399 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2400 if (!expr1) | |
| 2401 return NULL; | |
| 2402 if (n_children >= 4) { | |
| 2403 globals = ast_for_expr(c, CHILD(n, 3)); | |
| 2404 if (!globals) | |
| 2405 return NULL; | |
| 2406 } | |
| 2407 if (n_children == 6) { | |
| 2408 locals = ast_for_expr(c, CHILD(n, 5)); | |
| 2409 if (!locals) | |
| 2410 return NULL; | |
| 2411 } | |
| 2412 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2413 return Exec(expr1, globals, locals, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2414 } |
| 2415 | |
| 2416 static stmt_ty | |
| 2417 ast_for_assert_stmt(struct compiling *c, const node *n) | |
| 2418 { | |
| 2419 /* assert_stmt: 'assert' test [',' test] */ | |
| 2420 REQ(n, assert_stmt); | |
| 2421 if (NCH(n) == 2) { | |
| 2422 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2423 if (!expression) | |
| 2424 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2425 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2426 } |
| 2427 else if (NCH(n) == 4) { | |
| 2428 expr_ty expr1, expr2; | |
| 2429 | |
| 2430 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2431 if (!expr1) | |
| 2432 return NULL; | |
| 2433 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2434 if (!expr2) | |
| 2435 return NULL; | |
| 2436 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2437 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2438 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2439 PyErr_Format(PyExc_SystemError, |
| 35742 | 2440 "improper number of parts to 'assert' statement: %d", |
| 2441 NCH(n)); | |
| 2442 return NULL; | |
| 2443 } | |
| 2444 | |
| 2445 static asdl_seq * | |
| 2446 ast_for_suite(struct compiling *c, const node *n) | |
| 2447 { | |
| 2448 /* 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
|
2449 asdl_seq *seq; |
| 35742 | 2450 stmt_ty s; |
| 2451 int i, total, num, end, pos = 0; | |
| 2452 node *ch; | |
| 2453 | |
| 2454 REQ(n, suite); | |
| 2455 | |
| 2456 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
|
2457 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2458 if (!seq) |
| 2459 return NULL; | |
| 2460 if (TYPE(CHILD(n, 0)) == simple_stmt) { | |
| 2461 n = CHILD(n, 0); | |
| 2462 /* simple_stmt always ends with a NEWLINE, | |
| 2463 and may have a trailing SEMI | |
| 2464 */ | |
| 2465 end = NCH(n) - 1; | |
| 2466 if (TYPE(CHILD(n, end - 1)) == SEMI) | |
| 2467 end--; | |
| 2468 /* loop by 2 to skip semi-colons */ | |
| 2469 for (i = 0; i < end; i += 2) { | |
| 2470 ch = CHILD(n, i); | |
| 2471 s = ast_for_stmt(c, ch); | |
| 2472 if (!s) | |
|
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
|
2473 return NULL; |
| 35742 | 2474 asdl_seq_SET(seq, pos++, s); |
| 2475 } | |
| 2476 } | |
| 2477 else { | |
| 2478 for (i = 2; i < (NCH(n) - 1); i++) { | |
| 2479 ch = CHILD(n, i); | |
| 2480 REQ(ch, stmt); | |
| 2481 num = num_stmts(ch); | |
| 2482 if (num == 1) { | |
| 2483 /* small_stmt or compound_stmt with only one child */ | |
| 2484 s = ast_for_stmt(c, ch); | |
| 2485 if (!s) | |
|
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
|
2486 return NULL; |
| 35742 | 2487 asdl_seq_SET(seq, pos++, s); |
| 2488 } | |
| 2489 else { | |
| 2490 int j; | |
| 2491 ch = CHILD(ch, 0); | |
| 2492 REQ(ch, simple_stmt); | |
| 2493 for (j = 0; j < NCH(ch); j += 2) { | |
|
36001
6321669f2f4d
SF #1377897, Bus error in ast
Neal Norwitz <nnorwitz@gmail.com>
parents:
36000
diff
changeset
|
2494 /* statement terminates with a semi-colon ';' */ |
|
6321669f2f4d
SF #1377897, Bus error in ast
Neal Norwitz <nnorwitz@gmail.com>
parents:
36000
diff
changeset
|
2495 if (NCH(CHILD(ch, j)) == 0) { |
|
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
|
2496 assert((j + 1) == NCH(ch)); |
|
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
|
2497 break; |
|
36001
6321669f2f4d
SF #1377897, Bus error in ast
Neal Norwitz <nnorwitz@gmail.com>
parents:
36000
diff
changeset
|
2498 } |
| 35742 | 2499 s = ast_for_stmt(c, CHILD(ch, j)); |
| 2500 if (!s) | |
|
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
|
2501 return NULL; |
| 35742 | 2502 asdl_seq_SET(seq, pos++, s); |
| 2503 } | |
| 2504 } | |
| 2505 } | |
| 2506 } | |
| 2507 assert(pos == seq->size); | |
| 2508 return seq; | |
| 2509 } | |
| 2510 | |
| 2511 static stmt_ty | |
| 2512 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2513 { | |
| 2514 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2515 ['else' ':' suite] | |
| 2516 */ | |
| 2517 char *s; | |
| 2518 | |
| 2519 REQ(n, if_stmt); | |
| 2520 | |
| 2521 if (NCH(n) == 4) { | |
| 2522 expr_ty expression; | |
| 2523 asdl_seq *suite_seq; | |
| 2524 | |
| 2525 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2526 if (!expression) | |
| 2527 return NULL; | |
| 2528 suite_seq = 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
|
2529 if (!suite_seq) |
| 35742 | 2530 return NULL; |
| 2531 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2532 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2533 } |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2534 |
| 35742 | 2535 s = STR(CHILD(n, 4)); |
| 2536 /* s[2], the third character in the string, will be | |
| 2537 's' for el_s_e, or | |
| 2538 'i' for el_i_f | |
| 2539 */ | |
| 2540 if (s[2] == 's') { | |
| 2541 expr_ty expression; | |
| 2542 asdl_seq *seq1, *seq2; | |
| 2543 | |
| 2544 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2545 if (!expression) | |
| 2546 return NULL; | |
| 2547 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:
36066
diff
changeset
|
2548 if (!seq1) |
| 35742 | 2549 return NULL; |
| 2550 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2551 if (!seq2) |
| 35742 | 2552 return NULL; |
| 2553 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2554 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2555 } |
| 2556 else if (s[2] == 'i') { | |
| 2557 int i, n_elif, has_else = 0; | |
| 2558 asdl_seq *orelse = NULL; | |
| 2559 n_elif = NCH(n) - 4; | |
| 2560 /* must reference the child n_elif+1 since 'else' token is third, | |
| 2561 not fourth, child from the end. */ | |
| 2562 if (TYPE(CHILD(n, (n_elif + 1))) == NAME | |
| 2563 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { | |
| 2564 has_else = 1; | |
| 2565 n_elif -= 3; | |
| 2566 } | |
| 2567 n_elif /= 4; | |
| 2568 | |
| 2569 if (has_else) { | |
| 2570 expr_ty expression; | |
| 2571 asdl_seq *seq1, *seq2; | |
| 2572 | |
|
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
|
2573 orelse = asdl_seq_new(1, c->c_arena); |
| 35742 | 2574 if (!orelse) |
| 2575 return NULL; | |
| 2576 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); | |
|
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de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2577 if (!expression) |
| 35742 | 2578 return NULL; |
|
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de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
36066
diff
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|
2579 seq1 = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
36066
diff
changeset
|
2580 if (!seq1) |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2581 return NULL; |
| 35742 | 2582 seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2583 if (!seq2) |
| 35742 | 2584 return NULL; |
| 2585 | |
| 2586 asdl_seq_SET(orelse, 0, If(expression, seq1, seq2, | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2587 LINENO(CHILD(n, NCH(n) - 6)), CHILD(n, NCH(n) - 6)->n_col_offset, |
|
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
|
2588 c->c_arena)); |
| 35742 | 2589 /* the just-created orelse handled the last elif */ |
| 2590 n_elif--; | |
| 2591 } | |
| 2592 | |
| 2593 for (i = 0; i < n_elif; i++) { | |
| 2594 int off = 5 + (n_elif - i - 1) * 4; | |
| 2595 expr_ty expression; | |
| 2596 asdl_seq *suite_seq; | |
|
37879
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2597 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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
|
2598 if (!newobj) |
| 35742 | 2599 return NULL; |
| 2600 expression = ast_for_expr(c, CHILD(n, off)); | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2601 if (!expression) |
| 35742 | 2602 return NULL; |
| 2603 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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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
|
2604 if (!suite_seq) |
| 35742 | 2605 return NULL; |
| 2606 | |
|
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
|
2607 asdl_seq_SET(newobj, 0, |
| 35742 | 2608 If(expression, suite_seq, orelse, |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
2609 LINENO(CHILD(n, off)), CHILD(n, off)->n_col_offset, c->c_arena)); |
|
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
|
2610 orelse = newobj; |
| 35742 | 2611 } |
| 2612 return If(ast_for_expr(c, CHILD(n, 1)), | |
| 2613 ast_for_suite(c, CHILD(n, 3)), | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2614 orelse, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2615 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
36066
diff
changeset
|
2616 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2617 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2618 "unexpected token in 'if' statement: %s", s); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
36066
diff
changeset
|
2619 return NULL; |
| 35742 | 2620 } |
| 2621 | |
| 2622 static stmt_ty | |
| 2623 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2624 { | |
| 2625 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2626 REQ(n, while_stmt); | |
| 2627 | |
| 2628 if (NCH(n) == 4) { | |
| 2629 expr_ty expression; | |
| 2630 asdl_seq *suite_seq; | |
| 2631 | |
| 2632 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2633 if (!expression) | |
| 2634 return NULL; | |
| 2635 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2636 if (!suite_seq) |
| 35742 | 2637 return NULL; |
|
36786
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Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2638 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2639 } |
| 2640 else if (NCH(n) == 7) { | |
| 2641 expr_ty expression; | |
| 2642 asdl_seq *seq1, *seq2; | |
| 2643 | |
| 2644 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2645 if (!expression) | |
| 2646 return NULL; | |
| 2647 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2648 if (!seq1) |
| 35742 | 2649 return NULL; |
| 2650 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2651 if (!seq2) |
| 35742 | 2652 return NULL; |
| 2653 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2654 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2655 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
36066
diff
changeset
|
2656 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
36066
diff
changeset
|
2657 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2658 "wrong number of tokens for 'while' statement: %d", |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2659 NCH(n)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
36066
diff
changeset
|
2660 return NULL; |
| 35742 | 2661 } |
| 2662 | |
| 2663 static stmt_ty | |
| 2664 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2665 { | |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2666 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2667 expr_ty expression; |
| 2668 expr_ty target; | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2669 const node *node_target; |
| 35742 | 2670 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2671 REQ(n, for_stmt); | |
| 2672 | |
| 2673 if (NCH(n) == 9) { | |
| 2674 seq = ast_for_suite(c, CHILD(n, 8)); | |
| 2675 if (!seq) | |
| 2676 return NULL; | |
| 2677 } | |
| 2678 | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
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38453
diff
changeset
|
2679 node_target = CHILD(n, 1); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2680 _target = ast_for_exprlist(c, node_target, Store); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
36066
diff
changeset
|
2681 if (!_target) |
| 35742 | 2682 return NULL; |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2683 /* Check the # of children rather than the length of _target, since |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2684 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2685 if (NCH(node_target) == 1) |
|
37879
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2686 target = (expr_ty)asdl_seq_GET(_target, 0); |
| 35742 | 2687 else |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2688 target = Tuple(_target, Store, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2689 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2690 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
36072
de16a85c3b4c
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parents:
36066
diff
changeset
|
2691 if (!expression) |
| 35742 | 2692 return NULL; |
| 2693 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
36066
diff
changeset
|
2694 if (!suite_seq) |
| 35742 | 2695 return NULL; |
| 2696 | |
|
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
changeset
|
2697 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
|
2698 c->c_arena); |
| 35742 | 2699 } |
| 2700 | |
| 2701 static excepthandler_ty | |
| 2702 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2703 { | |
| 2704 /* except_clause: 'except' [test [',' test]] */ | |
| 2705 REQ(exc, except_clause); | |
| 2706 REQ(body, suite); | |
| 2707 | |
| 2708 if (NCH(exc) == 1) { | |
| 2709 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2710 if (!suite_seq) | |
| 2711 return NULL; | |
| 2712 | |
|
37879
f731859e9b3b
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parents:
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diff
changeset
|
2713 return excepthandler(NULL, NULL, suite_seq, LINENO(exc), |
|
f731859e9b3b
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parents:
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diff
changeset
|
2714 exc->n_col_offset, c->c_arena); |
| 35742 | 2715 } |
| 2716 else if (NCH(exc) == 2) { | |
| 2717 expr_ty expression; | |
| 2718 asdl_seq *suite_seq; | |
| 2719 | |
| 2720 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2721 if (!expression) | |
| 2722 return NULL; | |
| 2723 suite_seq = ast_for_suite(c, body); | |
|
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diff
changeset
|
2724 if (!suite_seq) |
| 35742 | 2725 return NULL; |
| 2726 | |
|
37879
f731859e9b3b
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diff
changeset
|
2727 return excepthandler(expression, NULL, suite_seq, LINENO(exc), |
|
f731859e9b3b
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changeset
|
2728 exc->n_col_offset, c->c_arena); |
| 35742 | 2729 } |
| 2730 else if (NCH(exc) == 4) { | |
| 2731 asdl_seq *suite_seq; | |
| 2732 expr_ty expression; | |
| 2733 expr_ty e = ast_for_expr(c, CHILD(exc, 3)); | |
| 2734 if (!e) | |
| 2735 return NULL; | |
|
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diff
changeset
|
2736 if (!set_context(e, Store, CHILD(exc, 3))) |
| 35742 | 2737 return NULL; |
|
36072
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diff
changeset
|
2738 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
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parents:
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diff
changeset
|
2739 if (!expression) |
|
de16a85c3b4c
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diff
changeset
|
2740 return NULL; |
| 35742 | 2741 suite_seq = ast_for_suite(c, body); |
|
36072
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diff
changeset
|
2742 if (!suite_seq) |
| 35742 | 2743 return NULL; |
| 2744 | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
2745 return excepthandler(expression, e, suite_seq, LINENO(exc), |
|
f731859e9b3b
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parents:
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diff
changeset
|
2746 exc->n_col_offset, c->c_arena); |
| 35742 | 2747 } |
|
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diff
changeset
|
2748 |
|
de16a85c3b4c
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changeset
|
2749 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
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parents:
36066
diff
changeset
|
2750 "wrong number of children for 'except' clause: %d", |
|
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36066
diff
changeset
|
2751 NCH(exc)); |
|
de16a85c3b4c
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parents:
36066
diff
changeset
|
2752 return NULL; |
| 35742 | 2753 } |
| 2754 | |
| 2755 static stmt_ty | |
| 2756 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2757 { | |
|
36066
719ba02d2e2c
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parents:
36065
diff
changeset
|
2758 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
|
2759 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
|
2760 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
|
2761 |
| 35742 | 2762 REQ(n, try_stmt); |
| 2763 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2764 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
|
2765 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
|
2766 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2767 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2768 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
|
2769 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
|
2770 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
|
2771 /* 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
|
2772 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
|
2773 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
|
2774 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
|
2775 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
|
2776 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2777 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2778 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2779 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2780 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
|
2781 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
|
2782 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2783 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2784 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2785 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2786 /* 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
|
2787 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
|
2788 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
|
2789 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
|
2790 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2791 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2792 } |
| 35742 | 2793 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2794 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
|
2795 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2796 return NULL; |
| 2797 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2798 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2799 if (n_except > 0) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2800 int i; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2801 stmt_ty except_st; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2802 /* 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
|
2803 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
|
2804 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
|
2805 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2806 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2807 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
|
2808 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
|
2809 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
|
2810 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2811 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2812 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
|
2813 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2814 |
|
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
|
2815 except_st = TryExcept(body, handlers, orelse, LINENO(n), |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2816 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
|
2817 if (!finally) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2818 return except_st; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2819 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2820 /* 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
|
2821 TryFinally to emulate try ... except ... finally */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2822 body = asdl_seq_new(1, 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
|
2823 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
|
2824 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2825 asdl_seq_SET(body, 0, except_st); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2826 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2827 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2828 /* 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
|
2829 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
|
2830 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2831 } |
| 2832 | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2833 static expr_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2834 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
|
2835 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2836 REQ(n, with_var); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2837 if (strcmp(STR(CHILD(n, 0)), "as") != 0) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2838 ast_error(n, "expected \"with [expr] as [var]\""); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2839 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2840 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2841 return ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2842 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2843 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2844 /* with_stmt: 'with' test [ with_var ] ':' suite */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2845 static stmt_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2846 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
|
2847 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2848 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2849 int suite_index = 3; /* skip 'with', test, and ':' */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2850 asdl_seq *suite_seq; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2851 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2852 assert(TYPE(n) == with_stmt); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2853 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
|
2854 if (TYPE(CHILD(n, 2)) == with_var) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2855 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
|
2856 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2857 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2858 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2859 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2860 if (!set_context(optional_vars, Store, n)) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2861 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2862 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2863 suite_index = 4; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2864 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2865 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2866 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
|
2867 if (!suite_seq) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2868 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2869 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2870 return With(context_expr, optional_vars, suite_seq, LINENO(n), |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2871 n->n_col_offset, c->c_arena); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2872 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2873 |
| 35742 | 2874 static stmt_ty |
| 2875 ast_for_classdef(struct compiling *c, const node *n) | |
| 2876 { | |
| 2877 /* classdef: 'class' NAME ['(' testlist ')'] ':' suite */ | |
| 2878 asdl_seq *bases, *s; | |
| 2879 | |
| 2880 REQ(n, classdef); | |
| 2881 | |
| 2882 if (!strcmp(STR(CHILD(n, 1)), "None")) { | |
| 2883 ast_error(n, "assignment to None"); | |
| 2884 return NULL; | |
| 2885 } | |
| 2886 | |
| 2887 if (NCH(n) == 4) { | |
| 2888 s = ast_for_suite(c, CHILD(n, 3)); | |
| 2889 if (!s) | |
| 2890 return NULL; | |
|
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
|
2891 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, s, LINENO(n), |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2892 n->n_col_offset, c->c_arena); |
| 35742 | 2893 } |
| 2894 /* check for empty base list */ | |
| 2895 if (TYPE(CHILD(n,3)) == RPAR) { | |
| 2896 s = ast_for_suite(c, CHILD(n,5)); | |
| 2897 if (!s) | |
| 2898 return NULL; | |
|
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
|
2899 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, s, LINENO(n), |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2900 n->n_col_offset, c->c_arena); |
| 35742 | 2901 } |
| 2902 | |
| 2903 /* else handle the base class list */ | |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2904 bases = ast_for_class_bases(c, CHILD(n, 3)); |
|
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2905 if (!bases) |
| 35742 | 2906 return NULL; |
| 2907 | |
| 2908 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
|
2909 if (!s) |
| 35742 | 2910 return NULL; |
|
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
|
2911 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), bases, s, LINENO(n), |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2912 n->n_col_offset, c->c_arena); |
| 35742 | 2913 } |
| 2914 | |
| 2915 static stmt_ty | |
| 2916 ast_for_stmt(struct compiling *c, const node *n) | |
| 2917 { | |
| 2918 if (TYPE(n) == stmt) { | |
| 2919 assert(NCH(n) == 1); | |
| 2920 n = CHILD(n, 0); | |
| 2921 } | |
| 2922 if (TYPE(n) == simple_stmt) { | |
| 2923 assert(num_stmts(n) == 1); | |
| 2924 n = CHILD(n, 0); | |
| 2925 } | |
| 2926 if (TYPE(n) == small_stmt) { | |
| 2927 REQ(n, small_stmt); | |
| 2928 n = CHILD(n, 0); | |
| 2929 /* small_stmt: expr_stmt | print_stmt | del_stmt | pass_stmt | |
| 2930 | flow_stmt | import_stmt | global_stmt | exec_stmt | |
| 2931 | assert_stmt | |
| 2932 */ | |
| 2933 switch (TYPE(n)) { | |
| 2934 case expr_stmt: | |
| 2935 return ast_for_expr_stmt(c, n); | |
| 2936 case print_stmt: | |
| 2937 return ast_for_print_stmt(c, n); | |
| 2938 case del_stmt: | |
| 2939 return ast_for_del_stmt(c, n); | |
| 2940 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
|
2941 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2942 case flow_stmt: |
| 2943 return ast_for_flow_stmt(c, n); | |
| 2944 case import_stmt: | |
| 2945 return ast_for_import_stmt(c, n); | |
| 2946 case global_stmt: | |
| 2947 return ast_for_global_stmt(c, n); | |
| 2948 case exec_stmt: | |
| 2949 return ast_for_exec_stmt(c, n); | |
| 2950 case assert_stmt: | |
| 2951 return ast_for_assert_stmt(c, n); | |
| 2952 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2953 PyErr_Format(PyExc_SystemError, |
| 35742 | 2954 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 2955 TYPE(n), NCH(n)); | |
| 2956 return NULL; | |
| 2957 } | |
| 2958 } | |
| 2959 else { | |
| 2960 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
| 2961 | funcdef | classdef | |
| 2962 */ | |
| 2963 node *ch = CHILD(n, 0); | |
| 2964 REQ(n, compound_stmt); | |
| 2965 switch (TYPE(ch)) { | |
| 2966 case if_stmt: | |
| 2967 return ast_for_if_stmt(c, ch); | |
| 2968 case while_stmt: | |
| 2969 return ast_for_while_stmt(c, ch); | |
| 2970 case for_stmt: | |
| 2971 return ast_for_for_stmt(c, ch); | |
| 2972 case try_stmt: | |
| 2973 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2974 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2975 return ast_for_with_stmt(c, ch); |
| 35742 | 2976 case funcdef: |
| 2977 return ast_for_funcdef(c, ch); | |
| 2978 case classdef: | |
| 2979 return ast_for_classdef(c, ch); | |
| 2980 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2981 PyErr_Format(PyExc_SystemError, |
| 35742 | 2982 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 2983 TYPE(n), NCH(n)); | |
| 2984 return NULL; | |
| 2985 } | |
| 2986 } | |
| 2987 } | |
| 2988 | |
| 2989 static PyObject * | |
| 2990 parsenumber(const char *s) | |
| 2991 { | |
| 2992 const char *end; | |
| 2993 long x; | |
| 2994 double dx; | |
| 2995 #ifndef WITHOUT_COMPLEX | |
| 2996 Py_complex c; | |
| 2997 int imflag; | |
| 2998 #endif | |
| 2999 | |
| 3000 errno = 0; | |
| 3001 end = s + strlen(s) - 1; | |
| 3002 #ifndef WITHOUT_COMPLEX | |
| 3003 imflag = *end == 'j' || *end == 'J'; | |
| 3004 #endif | |
| 3005 if (*end == 'l' || *end == 'L') | |
| 3006 return PyLong_FromString((char *)s, (char **)0, 0); | |
| 3007 if (s[0] == '0') { | |
| 3008 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); | |
| 3009 if (x < 0 && errno == 0) { | |
| 3010 return PyLong_FromString((char *)s, | |
| 3011 (char **)0, | |
| 3012 0); | |
| 3013 } | |
| 3014 } | |
| 3015 else | |
| 3016 x = PyOS_strtol((char *)s, (char **)&end, 0); | |
| 3017 if (*end == '\0') { | |
| 3018 if (errno != 0) | |
| 3019 return PyLong_FromString((char *)s, (char **)0, 0); | |
| 3020 return PyInt_FromLong(x); | |
| 3021 } | |
| 3022 /* XXX Huge floats may silently fail */ | |
| 3023 #ifndef WITHOUT_COMPLEX | |
| 3024 if (imflag) { | |
| 3025 c.real = 0.; | |
| 3026 PyFPE_START_PROTECT("atof", return 0) | |
| 36155 | 3027 c.imag = PyOS_ascii_atof(s); |
| 35742 | 3028 PyFPE_END_PROTECT(c) |
| 3029 return PyComplex_FromCComplex(c); | |
| 3030 } | |
| 3031 else | |
| 3032 #endif | |
| 3033 { | |
| 3034 PyFPE_START_PROTECT("atof", return 0) | |
| 36155 | 3035 dx = PyOS_ascii_atof(s); |
| 35742 | 3036 PyFPE_END_PROTECT(dx) |
| 3037 return PyFloat_FromDouble(dx); | |
| 3038 } | |
| 3039 } | |
| 3040 | |
| 3041 static PyObject * | |
| 3042 decode_utf8(const char **sPtr, const char *end, char* encoding) | |
| 3043 { | |
| 3044 #ifndef Py_USING_UNICODE | |
| 3045 Py_FatalError("decode_utf8 should not be called in this build."); | |
| 3046 return NULL; | |
| 3047 #else | |
| 3048 PyObject *u, *v; | |
| 3049 char *s, *t; | |
| 3050 t = s = (char *)*sPtr; | |
| 3051 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ | |
| 3052 while (s < end && (*s & 0x80)) s++; | |
| 3053 *sPtr = s; | |
| 3054 u = PyUnicode_DecodeUTF8(t, s - t, NULL); | |
| 3055 if (u == NULL) | |
| 3056 return NULL; | |
| 3057 v = PyUnicode_AsEncodedString(u, encoding, NULL); | |
| 3058 Py_DECREF(u); | |
| 3059 return v; | |
| 3060 #endif | |
| 3061 } | |
| 3062 | |
| 3063 static PyObject * | |
| 3064 decode_unicode(const char *s, size_t len, int rawmode, const char *encoding) | |
| 3065 { | |
| 3066 PyObject *v, *u; | |
| 3067 char *buf; | |
| 3068 char *p; | |
| 3069 const char *end; | |
| 3070 if (encoding == NULL) { | |
| 3071 buf = (char *)s; | |
| 3072 u = NULL; | |
| 3073 } else if (strcmp(encoding, "iso-8859-1") == 0) { | |
| 3074 buf = (char *)s; | |
| 3075 u = NULL; | |
| 3076 } else { | |
| 3077 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ | |
| 3078 u = PyString_FromStringAndSize((char *)NULL, len * 4); | |
| 3079 if (u == NULL) | |
| 3080 return NULL; | |
| 3081 p = buf = PyString_AsString(u); | |
| 3082 end = s + len; | |
| 3083 while (s < end) { | |
| 3084 if (*s == '\\') { | |
| 3085 *p++ = *s++; | |
| 3086 if (*s & 0x80) { | |
| 3087 strcpy(p, "u005c"); | |
| 3088 p += 5; | |
| 3089 } | |
| 3090 } | |
| 3091 if (*s & 0x80) { /* XXX inefficient */ | |
| 3092 PyObject *w; | |
| 3093 char *r; | |
|
38453
29ae5e0fc348
Much-needed merge (using svnmerge.py this time) of trunk changes into p3yk.
Thomas Wouters <thomas@python.org>
parents:
37879
diff
changeset
|
3094 Py_ssize_t rn, i; |
| 35742 | 3095 w = decode_utf8(&s, end, "utf-16-be"); |
| 3096 if (w == NULL) { | |
| 3097 Py_DECREF(u); | |
| 3098 return NULL; | |
| 3099 } | |
| 3100 r = PyString_AsString(w); | |
| 3101 rn = PyString_Size(w); | |
| 3102 assert(rn % 2 == 0); | |
| 3103 for (i = 0; i < rn; i += 2) { | |
| 3104 sprintf(p, "\\u%02x%02x", | |
| 3105 r[i + 0] & 0xFF, | |
| 3106 r[i + 1] & 0xFF); | |
| 3107 p += 6; | |
| 3108 } | |
| 3109 Py_DECREF(w); | |
| 3110 } else { | |
| 3111 *p++ = *s++; | |
| 3112 } | |
| 3113 } | |
| 3114 len = p - buf; | |
| 3115 s = buf; | |
| 3116 } | |
| 3117 if (rawmode) | |
| 3118 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); | |
| 3119 else | |
| 3120 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); | |
| 3121 Py_XDECREF(u); | |
| 3122 return v; | |
| 3123 } | |
| 3124 | |
| 3125 /* s is a Python string literal, including the bracketing quote characters, | |
| 3126 * and r &/or u prefixes (if any), and embedded escape sequences (if any). | |
| 3127 * parsestr parses it, and returns the decoded Python string object. | |
| 3128 */ | |
| 3129 static PyObject * | |
| 3130 parsestr(const char *s, const char *encoding) | |
| 3131 { | |
| 3132 size_t len; | |
|
36090
8cb686dd6e64
Fix SF bug #1072182, problems with signed characters.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36072
diff
changeset
|
3133 int quote = Py_CHARMASK(*s); |
| 35742 | 3134 int rawmode = 0; |
| 3135 int need_encoding; | |
| 3136 int unicode = 0; | |
| 3137 | |
| 3138 if (isalpha(quote) || quote == '_') { | |
| 3139 if (quote == 'u' || quote == 'U') { | |
| 3140 quote = *++s; | |
| 3141 unicode = 1; | |
| 3142 } | |
| 3143 if (quote == 'r' || quote == 'R') { | |
| 3144 quote = *++s; | |
| 3145 rawmode = 1; | |
| 3146 } | |
| 3147 } | |
| 3148 if (quote != '\'' && quote != '\"') { | |
| 3149 PyErr_BadInternalCall(); | |
| 3150 return NULL; | |
| 3151 } | |
| 3152 s++; | |
| 3153 len = strlen(s); | |
| 3154 if (len > INT_MAX) { | |
| 3155 PyErr_SetString(PyExc_OverflowError, | |
| 3156 "string to parse is too long"); | |
| 3157 return NULL; | |
| 3158 } | |
| 3159 if (s[--len] != quote) { | |
| 3160 PyErr_BadInternalCall(); | |
| 3161 return NULL; | |
| 3162 } | |
| 3163 if (len >= 4 && s[0] == quote && s[1] == quote) { | |
| 3164 s += 2; | |
| 3165 len -= 2; | |
| 3166 if (s[--len] != quote || s[--len] != quote) { | |
| 3167 PyErr_BadInternalCall(); | |
| 3168 return NULL; | |
| 3169 } | |
| 3170 } | |
| 3171 #ifdef Py_USING_UNICODE | |
| 3172 if (unicode || Py_UnicodeFlag) { | |
| 3173 return decode_unicode(s, len, rawmode, encoding); | |
| 3174 } | |
| 3175 #endif | |
| 3176 need_encoding = (encoding != NULL && | |
| 3177 strcmp(encoding, "utf-8") != 0 && | |
| 3178 strcmp(encoding, "iso-8859-1") != 0); | |
| 3179 if (rawmode || strchr(s, '\\') == NULL) { | |
| 3180 if (need_encoding) { | |
| 3181 #ifndef Py_USING_UNICODE | |
| 3182 /* This should not happen - we never see any other | |
| 3183 encoding. */ | |
|
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
|
3184 Py_FatalError( |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
3185 "cannot deal with encodings in this build."); |
| 35742 | 3186 #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
|
3187 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
| 35742 | 3188 if (u == NULL) |
| 3189 return NULL; | |
| 3190 v = PyUnicode_AsEncodedString(u, encoding, NULL); | |
| 3191 Py_DECREF(u); | |
| 3192 return v; | |
| 3193 #endif | |
| 3194 } else { | |
| 3195 return PyString_FromStringAndSize(s, len); | |
| 3196 } | |
| 3197 } | |
| 3198 | |
|
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
|
3199 return PyString_DecodeEscape(s, len, NULL, unicode, |
|
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
|
3200 need_encoding ? encoding : NULL); |
| 35742 | 3201 } |
| 3202 | |
| 3203 /* Build a Python string object out of a STRING atom. This takes care of | |
| 3204 * compile-time literal catenation, calling parsestr() on each piece, and | |
| 3205 * pasting the intermediate results together. | |
| 3206 */ | |
| 3207 static PyObject * | |
| 3208 parsestrplus(struct compiling *c, const node *n) | |
| 3209 { | |
| 3210 PyObject *v; | |
| 3211 int i; | |
| 3212 REQ(CHILD(n, 0), STRING); | |
| 3213 if ((v = parsestr(STR(CHILD(n, 0)), c->c_encoding)) != NULL) { | |
| 3214 /* String literal concatenation */ | |
| 3215 for (i = 1; i < NCH(n); i++) { | |
| 3216 PyObject *s; | |
| 3217 s = parsestr(STR(CHILD(n, i)), c->c_encoding); | |
| 3218 if (s == NULL) | |
| 3219 goto onError; | |
| 3220 if (PyString_Check(v) && PyString_Check(s)) { | |
| 3221 PyString_ConcatAndDel(&v, s); | |
| 3222 if (v == NULL) | |
| 3223 goto onError; | |
| 3224 } | |
| 3225 #ifdef Py_USING_UNICODE | |
| 3226 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
|
3227 PyObject *temp = PyUnicode_Concat(v, s); |
| 35742 | 3228 Py_DECREF(s); |
| 3229 Py_DECREF(v); | |
| 3230 v = temp; | |
|
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
|
3231 if (v == NULL) |
|
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
|
3232 goto onError; |
| 35742 | 3233 } |
| 3234 #endif | |
| 3235 } | |
| 3236 } | |
| 3237 return v; | |
| 3238 | |
| 3239 onError: | |
| 3240 Py_XDECREF(v); | |
| 3241 return NULL; | |
| 3242 } |