Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 41206:d835809f45ec 2.5
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Backported from r54404.
| author | Collin Winter <collinw@gmail.com> |
|---|---|
| date | Fri, 16 Mar 2007 04:12:48 +0000 |
| parents | 003d83da9932 |
| children | c2ac22c6f98d |
| 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 *); | |
|
37604
c732f66c913f
Convert 0 to their respective enum types. Convert
Martin v. Löwis <martin@v.loewis.de>
parents:
37597
diff
changeset
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34 static asdl_seq *ast_for_exprlist(struct compiling *, const node *, expr_context_ty); |
|
35798
857f68fba275
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
|
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
|
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
|
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) { |
|
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
|
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
|
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; |
|
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 } |
|
38406
8f7c7aeac3a5
Replace Py_BuildValue("OO") by PyTuple_Pack.
Georg Brandl <georg@python.org>
parents:
38218
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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
|
183 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
|
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
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
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
|
193 c.c_encoding = "utf-8"; |
|
37162
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Forward port MvL's fix in 43227:
Neal Norwitz <nnorwitz@gmail.com>
parents:
37065
diff
changeset
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194 if (TYPE(n) == encoding_decl) { |
|
b4d92ef2f338
Forward port MvL's fix in 43227:
Neal Norwitz <nnorwitz@gmail.com>
parents:
37065
diff
changeset
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195 ast_error(n, "encoding declaration in Unicode string"); |
|
b4d92ef2f338
Forward port MvL's fix in 43227:
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parents:
37065
diff
changeset
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196 goto error; |
|
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Forward port MvL's fix in 43227:
Neal Norwitz <nnorwitz@gmail.com>
parents:
37065
diff
changeset
|
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
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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; | |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
250 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
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
1685dcd2f929
Fix icc warnings: shadowing local variables
Neal Norwitz <nnorwitz@gmail.com>
parents:
36155
diff
changeset
|
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: | |
|
37604
c732f66c913f
Convert 0 to their respective enum types. Convert
Martin v. Löwis <martin@v.loewis.de>
parents:
37597
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; | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
334 /* If a particular expression type can't be used for assign / delete, |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
335 set expr_name to its name and an error message will be generated. |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
336 */ |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
337 const char* expr_name = NULL; |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
338 |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
339 /* The ast defines augmented store and load contexts, but the |
|
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 |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
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341 a little more complex than necessary as a result. It also means |
|
39037
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Fix AST compiler bug #1501934: incorrect LOAD/STORE_GLOBAL generation.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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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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b6d2f6fd3e11
PEP 343 -- the with-statement.
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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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b745b3fd66a6
Patch #1531113: Fix augmented assignment with yield expressions.
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diff
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|
390 case Yield_kind: |
|
b745b3fd66a6
Patch #1531113: Fix augmented assignment with yield expressions.
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parents:
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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; |
|
38181
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- Bug #1487966: Fix SystemError with conditional expression in assignment
Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
407 case IfExp_kind: |
|
ab704b99e150
- Bug #1487966: Fix SystemError with conditional expression in assignment
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changeset
|
408 expr_name = "conditional expression"; |
|
ab704b99e150
- Bug #1487966: Fix SystemError with conditional expression in assignment
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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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Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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diff
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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++) { | |
|
37604
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Convert 0 to their respective enum types. Convert
Martin v. Löwis <martin@v.loewis.de>
parents:
37597
diff
changeset
|
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: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
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35868
diff
changeset
|
473 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
|
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Convert 0 to their respective enum types. Convert
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37597
diff
changeset
|
474 return (operator_ty)0; |
| 35742 | 475 } |
| 476 } | |
| 477 | |
| 478 static cmpop_ty | |
| 479 ast_for_comp_op(const node *n) | |
| 480 { | |
| 481 /* comp_op: '<'|'>'|'=='|'>='|'<='|'<>'|'!='|'in'|'not' 'in'|'is' | |
| 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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Convert all internal errors from Exception to SystemError
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changeset
|
506 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 507 STR(n)); |
|
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changeset
|
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: | |
|
35870
f531c05cd240
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35868
diff
changeset
|
520 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 521 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
|
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changeset
|
522 return (cmpop_ty)0; |
| 35742 | 523 } |
| 524 } | |
|
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diff
changeset
|
525 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 526 NCH(n)); |
|
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diff
changeset
|
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)* [','] */ | |
|
35759
d91ed7107fd2
ANSI-C-ify the placement of local var declarations.
Armin Rigo <arigo@tunes.org>
parents:
35748
diff
changeset
|
534 asdl_seq *seq; |
|
d91ed7107fd2
ANSI-C-ify the placement of local var declarations.
Armin Rigo <arigo@tunes.org>
parents:
35748
diff
changeset
|
535 expr_ty expression; |
|
d91ed7107fd2
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parents:
35748
diff
changeset
|
536 int i; |
| 35742 | 537 assert(TYPE(n) == testlist |
| 538 || TYPE(n) == listmaker | |
| 539 || TYPE(n) == testlist_gexp | |
| 540 || TYPE(n) == testlist_safe | |
| 40288 | 541 || TYPE(n) == testlist1 |
| 35742 | 542 ); |
| 543 | |
|
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
|
544 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 545 if (!seq) |
| 546 return NULL; | |
| 547 | |
| 548 for (i = 0; i < NCH(n); i += 2) { | |
|
36670
296cda9b3e2f
Fix assertion errors in debug build, brought on by PEP 308 patch.
Thomas Wouters <thomas@python.org>
parents:
36666
diff
changeset
|
549 assert(TYPE(CHILD(n, i)) == test || TYPE(CHILD(n, i)) == old_test); |
| 35742 | 550 |
| 551 expression = ast_for_expr(c, CHILD(n, 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
|
552 if (!expression) |
| 35742 | 553 return NULL; |
| 554 | |
| 555 assert(i / 2 < seq->size); | |
| 556 asdl_seq_SET(seq, i / 2, expression); | |
| 557 } | |
| 558 return seq; | |
| 559 } | |
| 560 | |
| 561 static expr_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
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changeset
|
562 compiler_complex_args(struct compiling *c, const node *n) |
| 35742 | 563 { |
| 564 int i, len = (NCH(n) + 1) / 2; | |
| 565 expr_ty result; | |
|
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parents:
36001
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changeset
|
566 asdl_seq *args = asdl_seq_new(len, c->c_arena); |
| 35742 | 567 if (!args) |
| 568 return NULL; | |
| 569 | |
| 39887 | 570 /* fpdef: NAME | '(' fplist ')' |
| 571 fplist: fpdef (',' fpdef)* [','] | |
| 572 */ | |
| 35742 | 573 REQ(n, fplist); |
| 574 for (i = 0; i < len; i++) { | |
| 39887 | 575 const node *fpdef_node = CHILD(n, 2*i); |
| 576 const node *child; | |
| 35742 | 577 expr_ty arg; |
| 39887 | 578 set_name: |
| 579 /* fpdef_node is either a NAME or an fplist */ | |
| 580 child = CHILD(fpdef_node, 0); | |
| 35742 | 581 if (TYPE(child) == NAME) { |
|
36718
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36712
diff
changeset
|
582 if (!strcmp(STR(child), "None")) { |
|
45e6f901902c
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Jeremy Hylton <jeremy@alum.mit.edu>
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changeset
|
583 ast_error(child, "assignment to None"); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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diff
changeset
|
584 return NULL; |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
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diff
changeset
|
585 } |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
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37235
diff
changeset
|
586 arg = Name(NEW_IDENTIFIER(child), Store, LINENO(child), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
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parents:
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diff
changeset
|
587 child->n_col_offset, c->c_arena); |
|
36718
45e6f901902c
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Jeremy Hylton <jeremy@alum.mit.edu>
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changeset
|
588 } |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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diff
changeset
|
589 else { |
| 39887 | 590 assert(TYPE(fpdef_node) == fpdef); |
| 591 /* fpdef_node[0] is not a name, so it must be a '(', get CHILD[1] */ | |
| 592 child = CHILD(fpdef_node, 1); | |
| 593 assert(TYPE(child) == fplist); | |
| 594 /* NCH == 1 means we have (x), we need to elide the extra parens */ | |
| 595 if (NCH(child) == 1) { | |
| 596 fpdef_node = CHILD(child, 0); | |
| 597 assert(TYPE(fpdef_node) == fpdef); | |
| 598 goto set_name; | |
| 599 } | |
| 600 arg = compiler_complex_args(c, child); | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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diff
changeset
|
601 } |
| 35742 | 602 asdl_seq_SET(args, i, arg); |
| 603 } | |
| 604 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
605 result = Tuple(args, Store, LINENO(n), n->n_col_offset, c->c_arena); |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
606 if (!set_context(result, Store, n)) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
607 return NULL; |
| 35742 | 608 return result; |
| 609 } | |
| 610 | |
| 611 | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
612 /* Create AST for argument list. */ |
| 35742 | 613 |
| 614 static arguments_ty | |
| 615 ast_for_arguments(struct compiling *c, const node *n) | |
| 616 { | |
| 617 /* parameters: '(' [varargslist] ')' | |
| 618 varargslist: (fpdef ['=' test] ',')* ('*' NAME [',' '**' NAME] | |
| 619 | '**' NAME) | fpdef ['=' test] (',' fpdef ['=' test])* [','] | |
| 620 */ | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
621 int i, j, k, n_args = 0, n_defaults = 0, found_default = 0; |
| 35742 | 622 asdl_seq *args, *defaults; |
| 623 identifier vararg = NULL, kwarg = NULL; | |
| 624 node *ch; | |
| 625 | |
| 626 if (TYPE(n) == parameters) { | |
| 627 if (NCH(n) == 2) /* () as argument list */ | |
|
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
|
628 return arguments(NULL, NULL, NULL, NULL, c->c_arena); |
| 35742 | 629 n = CHILD(n, 1); |
| 630 } | |
| 631 REQ(n, varargslist); | |
| 632 | |
| 633 /* first count the number of normal args & defaults */ | |
| 634 for (i = 0; i < NCH(n); i++) { | |
| 635 ch = CHILD(n, i); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
636 if (TYPE(ch) == fpdef) |
| 35742 | 637 n_args++; |
| 638 if (TYPE(ch) == EQUAL) | |
| 639 n_defaults++; | |
| 640 } | |
|
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
|
641 args = (n_args ? asdl_seq_new(n_args, c->c_arena) : NULL); |
| 35742 | 642 if (!args && n_args) |
|
39317
d0e6170704de
Add some asserts and update comments
Neal Norwitz <nnorwitz@gmail.com>
parents:
39300
diff
changeset
|
643 return NULL; /* Don't need to goto error; no objects allocated */ |
|
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
|
644 defaults = (n_defaults ? asdl_seq_new(n_defaults, c->c_arena) : NULL); |
| 35742 | 645 if (!defaults && n_defaults) |
|
39317
d0e6170704de
Add some asserts and update comments
Neal Norwitz <nnorwitz@gmail.com>
parents:
39300
diff
changeset
|
646 return NULL; /* Don't need to goto error; no objects allocated */ |
| 35742 | 647 |
| 648 /* fpdef: NAME | '(' fplist ')' | |
| 649 fplist: fpdef (',' fpdef)* [','] | |
| 650 */ | |
| 651 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
652 j = 0; /* index for defaults */ |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
653 k = 0; /* index for args */ |
| 35742 | 654 while (i < NCH(n)) { |
| 655 ch = CHILD(n, i); | |
| 656 switch (TYPE(ch)) { | |
| 657 case fpdef: | |
| 39887 | 658 handle_fpdef: |
| 35742 | 659 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 660 anything other than EQUAL or a comma? */ | |
| 661 /* XXX Should NCH(n) check be made a separate check? */ | |
| 662 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { | |
|
39131
7c09b66f04bd
Handle more memory allocation failures without crashing.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39067
diff
changeset
|
663 expr_ty expression = ast_for_expr(c, CHILD(n, i + 2)); |
|
7c09b66f04bd
Handle more memory allocation failures without crashing.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39067
diff
changeset
|
664 if (!expression) |
|
7c09b66f04bd
Handle more memory allocation failures without crashing.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39067
diff
changeset
|
665 goto error; |
|
39317
d0e6170704de
Add some asserts and update comments
Neal Norwitz <nnorwitz@gmail.com>
parents:
39300
diff
changeset
|
666 assert(defaults != NULL); |
|
39131
7c09b66f04bd
Handle more memory allocation failures without crashing.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39067
diff
changeset
|
667 asdl_seq_SET(defaults, j++, expression); |
| 35742 | 668 i += 2; |
| 669 found_default = 1; | |
| 670 } | |
| 671 else if (found_default) { | |
| 672 ast_error(n, | |
| 673 "non-default argument follows default argument"); | |
| 674 goto error; | |
| 675 } | |
| 676 if (NCH(ch) == 3) { | |
|
37235
9d8b33aff60c
Fix SF bug #1458903 with AST compiler.
Neal Norwitz <nnorwitz@gmail.com>
parents:
37162
diff
changeset
|
677 ch = CHILD(ch, 1); |
|
9d8b33aff60c
Fix SF bug #1458903 with AST compiler.
Neal Norwitz <nnorwitz@gmail.com>
parents:
37162
diff
changeset
|
678 /* def foo((x)): is not complex, special case. */ |
|
9d8b33aff60c
Fix SF bug #1458903 with AST compiler.
Neal Norwitz <nnorwitz@gmail.com>
parents:
37162
diff
changeset
|
679 if (NCH(ch) != 1) { |
|
9d8b33aff60c
Fix SF bug #1458903 with AST compiler.
Neal Norwitz <nnorwitz@gmail.com>
parents:
37162
diff
changeset
|
680 /* We have complex arguments, setup for unpacking. */ |
|
9d8b33aff60c
Fix SF bug #1458903 with AST compiler.
Neal Norwitz <nnorwitz@gmail.com>
parents:
37162
diff
changeset
|
681 asdl_seq_SET(args, k++, compiler_complex_args(c, ch)); |
|
9d8b33aff60c
Fix SF bug #1458903 with AST compiler.
Neal Norwitz <nnorwitz@gmail.com>
parents:
37162
diff
changeset
|
682 } else { |
|
9d8b33aff60c
Fix SF bug #1458903 with AST compiler.
Neal Norwitz <nnorwitz@gmail.com>
parents:
37162
diff
changeset
|
683 /* def foo((x)): setup for checking NAME below. */ |
| 39887 | 684 /* Loop because there can be many parens and tuple |
| 685 upacking mixed in. */ | |
|
37235
9d8b33aff60c
Fix SF bug #1458903 with AST compiler.
Neal Norwitz <nnorwitz@gmail.com>
parents:
37162
diff
changeset
|
686 ch = CHILD(ch, 0); |
| 39887 | 687 assert(TYPE(ch) == fpdef); |
| 688 goto handle_fpdef; | |
|
37235
9d8b33aff60c
Fix SF bug #1458903 with AST compiler.
Neal Norwitz <nnorwitz@gmail.com>
parents:
37162
diff
changeset
|
689 } |
|
9d8b33aff60c
Fix SF bug #1458903 with AST compiler.
Neal Norwitz <nnorwitz@gmail.com>
parents:
37162
diff
changeset
|
690 } |
|
9d8b33aff60c
Fix SF bug #1458903 with AST compiler.
Neal Norwitz <nnorwitz@gmail.com>
parents:
37162
diff
changeset
|
691 if (TYPE(CHILD(ch, 0)) == NAME) { |
|
35759
d91ed7107fd2
ANSI-C-ify the placement of local var declarations.
Armin Rigo <arigo@tunes.org>
parents:
35748
diff
changeset
|
692 expr_ty name; |
| 35742 | 693 if (!strcmp(STR(CHILD(ch, 0)), "None")) { |
| 694 ast_error(CHILD(ch, 0), "assignment to None"); | |
| 695 goto error; | |
| 696 } | |
|
35759
d91ed7107fd2
ANSI-C-ify the placement of local var declarations.
Armin Rigo <arigo@tunes.org>
parents:
35748
diff
changeset
|
697 name = Name(NEW_IDENTIFIER(CHILD(ch, 0)), |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
698 Param, LINENO(ch), ch->n_col_offset, |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
699 c->c_arena); |
| 35742 | 700 if (!name) |
| 701 goto error; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
702 asdl_seq_SET(args, k++, name); |
| 35742 | 703 |
| 704 } | |
| 705 i += 2; /* the name and the comma */ | |
| 706 break; | |
| 707 case STAR: | |
| 708 if (!strcmp(STR(CHILD(n, i+1)), "None")) { | |
| 709 ast_error(CHILD(n, i+1), "assignment to None"); | |
| 710 goto error; | |
| 711 } | |
| 712 vararg = NEW_IDENTIFIER(CHILD(n, i+1)); | |
| 713 i += 3; | |
| 714 break; | |
| 715 case DOUBLESTAR: | |
| 716 if (!strcmp(STR(CHILD(n, i+1)), "None")) { | |
| 717 ast_error(CHILD(n, i+1), "assignment to None"); | |
| 718 goto error; | |
| 719 } | |
| 720 kwarg = NEW_IDENTIFIER(CHILD(n, i+1)); | |
| 721 i += 3; | |
| 722 break; | |
| 723 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
724 PyErr_Format(PyExc_SystemError, |
| 35742 | 725 "unexpected node in varargslist: %d @ %d", |
| 726 TYPE(ch), i); | |
| 727 goto error; | |
| 728 } | |
| 729 } | |
| 730 | |
|
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
|
731 return arguments(args, vararg, kwarg, defaults, c->c_arena); |
| 35742 | 732 |
| 733 error: | |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
734 Py_XDECREF(vararg); |
|
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
735 Py_XDECREF(kwarg); |
| 35742 | 736 return NULL; |
| 737 } | |
| 738 | |
| 739 static expr_ty | |
| 740 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 741 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
742 expr_ty e; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
743 identifier id; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
744 int lineno, col_offset; |
| 35742 | 745 int i; |
| 746 | |
| 747 REQ(n, dotted_name); | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
748 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
749 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
750 col_offset = n->n_col_offset; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
751 |
| 35742 | 752 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 753 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
|
754 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
755 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 756 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
|
757 return NULL; |
| 35742 | 758 |
| 759 for (i = 2; i < NCH(n); i+=2) { | |
| 760 id = NEW_IDENTIFIER(CHILD(n, i)); | |
| 761 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
|
762 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
763 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:
36066
diff
changeset
|
764 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
|
765 return NULL; |
| 35742 | 766 } |
| 767 | |
| 768 return e; | |
| 769 } | |
| 770 | |
| 771 static expr_ty | |
| 772 ast_for_decorator(struct compiling *c, const node *n) | |
| 773 { | |
| 774 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 775 expr_ty d = NULL; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
776 expr_ty name_expr; |
| 35742 | 777 |
| 778 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
779 REQ(CHILD(n, 0), AT); |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
780 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 781 |
| 782 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 783 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
|
784 return NULL; |
| 35742 | 785 |
| 786 if (NCH(n) == 3) { /* No arguments */ | |
| 787 d = name_expr; | |
| 788 name_expr = NULL; | |
| 789 } | |
| 790 else if (NCH(n) == 5) { /* Call with no arguments */ | |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
791 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
792 n->n_col_offset, c->c_arena); |
| 35742 | 793 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
|
794 return NULL; |
| 35742 | 795 name_expr = NULL; |
| 796 } | |
| 797 else { | |
| 798 d = ast_for_call(c, CHILD(n, 3), name_expr); | |
| 799 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
|
800 return NULL; |
| 35742 | 801 name_expr = NULL; |
| 802 } | |
| 803 | |
| 804 return d; | |
| 805 } | |
| 806 | |
| 807 static asdl_seq* | |
| 808 ast_for_decorators(struct compiling *c, const node *n) | |
| 809 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
810 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
|
811 expr_ty d; |
| 35742 | 812 int i; |
| 813 | |
| 814 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
|
815 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 816 if (!decorator_seq) |
| 817 return NULL; | |
| 818 | |
| 819 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
|
820 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
|
821 if (!d) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
822 return NULL; |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
823 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 824 } |
| 825 return decorator_seq; | |
| 826 } | |
| 827 | |
| 828 static stmt_ty | |
| 829 ast_for_funcdef(struct compiling *c, const node *n) | |
| 830 { | |
| 831 /* funcdef: 'def' [decorators] NAME parameters ':' suite */ | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
832 identifier name; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
833 arguments_ty args; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
834 asdl_seq *body; |
| 35742 | 835 asdl_seq *decorator_seq = NULL; |
| 836 int name_i; | |
| 837 | |
| 838 REQ(n, funcdef); | |
| 839 | |
| 840 if (NCH(n) == 6) { /* decorators are present */ | |
| 841 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); | |
| 842 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
|
843 return NULL; |
| 35742 | 844 name_i = 2; |
| 845 } | |
| 846 else { | |
| 847 name_i = 1; | |
| 848 } | |
| 849 | |
| 850 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 851 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
|
852 return NULL; |
| 35742 | 853 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
|
854 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
|
855 return NULL; |
| 35742 | 856 } |
| 857 args = ast_for_arguments(c, CHILD(n, name_i + 1)); | |
| 858 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
|
859 return NULL; |
| 35742 | 860 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 861 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
|
862 return NULL; |
| 35742 | 863 |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
864 return FunctionDef(name, args, body, decorator_seq, LINENO(n), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
865 n->n_col_offset, c->c_arena); |
| 35742 | 866 } |
| 867 | |
| 868 static expr_ty | |
| 869 ast_for_lambdef(struct compiling *c, const node *n) | |
| 870 { | |
| 871 /* lambdef: 'lambda' [varargslist] ':' test */ | |
| 872 arguments_ty args; | |
| 873 expr_ty expression; | |
| 874 | |
| 875 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
|
876 args = arguments(NULL, NULL, NULL, NULL, c->c_arena); |
| 35742 | 877 if (!args) |
| 878 return NULL; | |
| 879 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
|
880 if (!expression) |
| 35742 | 881 return NULL; |
| 882 } | |
| 883 else { | |
| 884 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 885 if (!args) | |
| 886 return NULL; | |
| 887 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
|
888 if (!expression) |
| 35742 | 889 return NULL; |
| 890 } | |
| 891 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
892 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 893 } |
| 894 | |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
895 static expr_ty |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
896 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
|
897 { |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
898 /* 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
|
899 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
|
900 |
|
36676
67c74efad8c2
Fix old not-reading-pep-308-right artifact.
Thomas Wouters <thomas@python.org>
parents:
36670
diff
changeset
|
901 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
|
902 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
|
903 if (!body) |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
904 return NULL; |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
905 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
|
906 if (!expression) |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
907 return NULL; |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
908 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
|
909 if (!orelse) |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
910 return NULL; |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
911 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
912 c->c_arena); |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
913 } |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
914 |
| 35742 | 915 /* Count the number of 'for' loop in a list comprehension. |
| 916 | |
| 917 Helper for ast_for_listcomp(). | |
| 918 */ | |
| 919 | |
| 920 static int | |
| 921 count_list_fors(const node *n) | |
| 922 { | |
| 923 int n_fors = 0; | |
| 924 node *ch = CHILD(n, 1); | |
| 925 | |
| 926 count_list_for: | |
| 927 n_fors++; | |
| 928 REQ(ch, list_for); | |
| 929 if (NCH(ch) == 5) | |
| 930 ch = CHILD(ch, 4); | |
| 931 else | |
| 932 return n_fors; | |
| 933 count_list_iter: | |
| 934 REQ(ch, list_iter); | |
| 935 ch = CHILD(ch, 0); | |
| 936 if (TYPE(ch) == list_for) | |
| 937 goto count_list_for; | |
| 938 else if (TYPE(ch) == list_if) { | |
| 939 if (NCH(ch) == 3) { | |
| 940 ch = CHILD(ch, 2); | |
| 941 goto count_list_iter; | |
| 942 } | |
| 943 else | |
| 944 return n_fors; | |
| 945 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
946 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
947 /* Should never be reached */ |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
948 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
|
949 return -1; |
| 35742 | 950 } |
| 951 | |
| 952 /* Count the number of 'if' statements in a list comprehension. | |
| 953 | |
| 954 Helper for ast_for_listcomp(). | |
| 955 */ | |
| 956 | |
| 957 static int | |
| 958 count_list_ifs(const node *n) | |
| 959 { | |
| 960 int n_ifs = 0; | |
| 961 | |
| 962 count_list_iter: | |
| 963 REQ(n, list_iter); | |
| 964 if (TYPE(CHILD(n, 0)) == list_for) | |
| 965 return n_ifs; | |
| 966 n = CHILD(n, 0); | |
| 967 REQ(n, list_if); | |
| 968 n_ifs++; | |
| 969 if (NCH(n) == 2) | |
| 970 return n_ifs; | |
| 971 n = CHILD(n, 2); | |
| 972 goto count_list_iter; | |
| 973 } | |
| 974 | |
| 975 static expr_ty | |
| 976 ast_for_listcomp(struct compiling *c, const node *n) | |
| 977 { | |
| 978 /* listmaker: test ( list_for | (',' test)* [','] ) | |
| 979 list_for: 'for' exprlist 'in' testlist_safe [list_iter] | |
| 980 list_iter: list_for | list_if | |
| 981 list_if: 'if' test [list_iter] | |
| 982 testlist_safe: test [(',' test)+ [',']] | |
| 983 */ | |
| 984 expr_ty elt; | |
| 985 asdl_seq *listcomps; | |
| 986 int i, n_fors; | |
| 987 node *ch; | |
| 988 | |
| 989 REQ(n, listmaker); | |
| 990 assert(NCH(n) > 1); | |
| 991 | |
| 992 elt = ast_for_expr(c, CHILD(n, 0)); | |
| 993 if (!elt) | |
| 994 return NULL; | |
| 995 | |
| 996 n_fors = count_list_fors(n); | |
| 997 if (n_fors == -1) | |
| 998 return NULL; | |
| 999 | |
|
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
|
1000 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
|
1001 if (!listcomps) |
| 35742 | 1002 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
|
1003 |
| 35742 | 1004 ch = CHILD(n, 1); |
| 1005 for (i = 0; i < n_fors; i++) { | |
| 1006 comprehension_ty lc; | |
| 1007 asdl_seq *t; | |
| 1008 expr_ty expression; | |
|
39754
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1009 node *for_ch; |
| 35742 | 1010 |
| 1011 REQ(ch, list_for); | |
| 1012 | |
|
39754
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1013 for_ch = CHILD(ch, 1); |
|
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1014 t = ast_for_exprlist(c, for_ch, 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
|
1015 if (!t) |
| 35742 | 1016 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
|
1017 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
|
1018 if (!expression) |
| 35742 | 1019 return NULL; |
| 1020 | |
|
39754
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1021 /* Check the # of children rather than the length of t, since |
|
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1022 [x for x, in ... ] has 1 element in t, but still requires a Tuple. */ |
|
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1023 if (NCH(for_ch) == 1) |
|
37604
c732f66c913f
Convert 0 to their respective enum types. Convert
Martin v. Löwis <martin@v.loewis.de>
parents:
37597
diff
changeset
|
1024 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
|
1025 c->c_arena); |
| 35742 | 1026 else |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1027 lc = comprehension(Tuple(t, Store, LINENO(ch), ch->n_col_offset, |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1028 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
|
1029 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
|
1030 if (!lc) |
| 35742 | 1031 return NULL; |
| 1032 | |
| 1033 if (NCH(ch) == 5) { | |
| 1034 int j, n_ifs; | |
| 1035 asdl_seq *ifs; | |
|
41206
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
1036 expr_ty list_for_expr; |
| 35742 | 1037 |
| 1038 ch = CHILD(ch, 4); | |
| 1039 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
|
1040 if (n_ifs == -1) |
| 35742 | 1041 return NULL; |
| 1042 | |
|
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
|
1043 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
|
1044 if (!ifs) |
| 35742 | 1045 return NULL; |
| 1046 | |
| 1047 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
|
1048 REQ(ch, list_iter); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1049 ch = CHILD(ch, 0); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1050 REQ(ch, list_if); |
|
41206
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
1051 |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
1052 list_for_expr = ast_for_expr(c, CHILD(ch, 1)); |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
1053 if (!list_for_expr) |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
1054 return NULL; |
| 35742 | 1055 |
|
41206
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
1056 asdl_seq_SET(ifs, j, list_for_expr); |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1057 if (NCH(ch) == 3) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1058 ch = CHILD(ch, 2); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1059 } |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1060 /* 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
|
1061 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
|
1062 ch = CHILD(ch, 0); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1063 lc->ifs = ifs; |
| 35742 | 1064 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1065 asdl_seq_SET(listcomps, i, lc); |
| 35742 | 1066 } |
| 1067 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1068 return ListComp(elt, listcomps, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1069 } |
| 1070 | |
| 1071 /* | |
| 1072 Count the number of 'for' loops in a generator expression. | |
| 1073 | |
| 1074 Helper for ast_for_genexp(). | |
| 1075 */ | |
| 1076 | |
| 1077 static int | |
| 1078 count_gen_fors(const node *n) | |
| 1079 { | |
| 1080 int n_fors = 0; | |
| 1081 node *ch = CHILD(n, 1); | |
| 1082 | |
| 1083 count_gen_for: | |
| 1084 n_fors++; | |
| 1085 REQ(ch, gen_for); | |
| 1086 if (NCH(ch) == 5) | |
| 1087 ch = CHILD(ch, 4); | |
| 1088 else | |
| 1089 return n_fors; | |
| 1090 count_gen_iter: | |
| 1091 REQ(ch, gen_iter); | |
| 1092 ch = CHILD(ch, 0); | |
| 1093 if (TYPE(ch) == gen_for) | |
| 1094 goto count_gen_for; | |
| 1095 else if (TYPE(ch) == gen_if) { | |
| 1096 if (NCH(ch) == 3) { | |
| 1097 ch = CHILD(ch, 2); | |
| 1098 goto count_gen_iter; | |
| 1099 } | |
| 1100 else | |
| 1101 return n_fors; | |
| 1102 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1103 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1104 /* Should never be reached */ |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1105 PyErr_SetString(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1106 "logic error in count_gen_fors"); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1107 return -1; |
| 35742 | 1108 } |
| 1109 | |
| 1110 /* Count the number of 'if' statements in a generator expression. | |
| 1111 | |
| 1112 Helper for ast_for_genexp(). | |
| 1113 */ | |
| 1114 | |
| 1115 static int | |
| 1116 count_gen_ifs(const node *n) | |
| 1117 { | |
| 1118 int n_ifs = 0; | |
| 1119 | |
| 1120 while (1) { | |
| 1121 REQ(n, gen_iter); | |
| 1122 if (TYPE(CHILD(n, 0)) == gen_for) | |
| 1123 return n_ifs; | |
| 1124 n = CHILD(n, 0); | |
| 1125 REQ(n, gen_if); | |
| 1126 n_ifs++; | |
| 1127 if (NCH(n) == 2) | |
| 1128 return n_ifs; | |
| 1129 n = CHILD(n, 2); | |
| 1130 } | |
| 1131 } | |
| 1132 | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1133 /* TODO(jhylton): Combine with list comprehension code? */ |
| 35742 | 1134 static expr_ty |
| 1135 ast_for_genexp(struct compiling *c, const node *n) | |
| 1136 { | |
| 1137 /* testlist_gexp: test ( gen_for | (',' test)* [','] ) | |
| 1138 argument: [test '='] test [gen_for] # Really [keyword '='] test */ | |
| 1139 expr_ty elt; | |
| 1140 asdl_seq *genexps; | |
| 1141 int i, n_fors; | |
| 1142 node *ch; | |
| 1143 | |
| 1144 assert(TYPE(n) == (testlist_gexp) || TYPE(n) == (argument)); | |
| 1145 assert(NCH(n) > 1); | |
| 1146 | |
| 1147 elt = ast_for_expr(c, CHILD(n, 0)); | |
| 1148 if (!elt) | |
| 1149 return NULL; | |
| 1150 | |
| 1151 n_fors = count_gen_fors(n); | |
| 1152 if (n_fors == -1) | |
| 1153 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
|
1154 |
|
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
|
1155 genexps = 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
|
1156 if (!genexps) |
| 35742 | 1157 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
|
1158 |
| 35742 | 1159 ch = CHILD(n, 1); |
| 1160 for (i = 0; i < n_fors; i++) { | |
| 1161 comprehension_ty ge; | |
| 1162 asdl_seq *t; | |
| 1163 expr_ty expression; | |
|
39754
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1164 node *for_ch; |
| 35742 | 1165 |
| 1166 REQ(ch, gen_for); | |
| 1167 | |
|
39754
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1168 for_ch = CHILD(ch, 1); |
|
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1169 t = ast_for_exprlist(c, for_ch, 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
|
1170 if (!t) |
| 35742 | 1171 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
|
1172 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:
36001
diff
changeset
|
1173 if (!expression) |
| 35742 | 1174 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
|
1175 |
|
39754
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1176 /* Check the # of children rather than the length of t, since |
|
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1177 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
|
3300d7492f1a
Bug #1520864 (again): unpacking singleton tuples in list comprehensions and
Neal Norwitz <nnorwitz@gmail.com>
parents:
39445
diff
changeset
|
1178 if (NCH(for_ch) == 1) |
|
37604
c732f66c913f
Convert 0 to their respective enum types. Convert
Martin v. Löwis <martin@v.loewis.de>
parents:
37597
diff
changeset
|
1179 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,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1180 NULL, c->c_arena); |
| 35742 | 1181 else |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1182 ge = comprehension(Tuple(t, Store, LINENO(ch), ch->n_col_offset, |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1183 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
|
1184 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
|
1185 |
|
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
|
1186 if (!ge) |
| 35742 | 1187 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
|
1188 |
| 35742 | 1189 if (NCH(ch) == 5) { |
| 1190 int j, n_ifs; | |
| 1191 asdl_seq *ifs; | |
| 1192 | |
| 1193 ch = CHILD(ch, 4); | |
| 1194 n_ifs = count_gen_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
|
1195 if (n_ifs == -1) |
| 35742 | 1196 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
|
1197 |
|
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
|
1198 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
|
1199 if (!ifs) |
| 35742 | 1200 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
|
1201 |
| 35742 | 1202 for (j = 0; j < n_ifs; j++) { |
| 1203 REQ(ch, gen_iter); | |
| 1204 ch = CHILD(ch, 0); | |
| 1205 REQ(ch, gen_if); | |
| 1206 | |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1207 expression = ast_for_expr(c, CHILD(ch, 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
|
1208 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
|
1209 return NULL; |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1210 asdl_seq_SET(ifs, j, expression); |
| 35742 | 1211 if (NCH(ch) == 3) |
| 1212 ch = CHILD(ch, 2); | |
| 1213 } | |
| 1214 /* on exit, must guarantee that ch is a gen_for */ | |
| 1215 if (TYPE(ch) == gen_iter) | |
| 1216 ch = CHILD(ch, 0); | |
| 1217 ge->ifs = ifs; | |
| 1218 } | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
1219 asdl_seq_SET(genexps, i, ge); |
| 35742 | 1220 } |
| 1221 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1222 return GeneratorExp(elt, genexps, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1223 } |
| 1224 | |
| 1225 static expr_ty | |
| 1226 ast_for_atom(struct compiling *c, const node *n) | |
| 1227 { | |
| 1228 /* atom: '(' [yield_expr|testlist_gexp] ')' | '[' [listmaker] ']' | |
| 1229 | '{' [dictmaker] '}' | '`' testlist '`' | NAME | NUMBER | STRING+ | |
| 1230 */ | |
| 1231 node *ch = CHILD(n, 0); | |
| 1232 | |
| 1233 switch (TYPE(ch)) { | |
| 1234 case NAME: | |
| 1235 /* All names start in Load context, but may later be | |
| 1236 changed. */ | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1237 return Name(NEW_IDENTIFIER(ch), Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1238 case STRING: { |
| 1239 PyObject *str = parsestrplus(c, n); | |
| 1240 if (!str) | |
| 1241 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
|
1242 |
|
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
|
1243 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
|
1244 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1245 } |
| 1246 case NUMBER: { | |
| 1247 PyObject *pynum = parsenumber(STR(ch)); | |
| 1248 if (!pynum) | |
| 1249 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
|
1250 |
|
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
|
1251 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
|
1252 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1253 } |
| 1254 case LPAR: /* some parenthesized expressions */ | |
| 1255 ch = CHILD(n, 1); | |
| 1256 | |
| 1257 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
|
1258 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1259 |
| 1260 if (TYPE(ch) == yield_expr) | |
| 1261 return ast_for_expr(c, ch); | |
| 1262 | |
| 1263 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == gen_for)) | |
| 1264 return ast_for_genexp(c, ch); | |
| 1265 | |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1266 return ast_for_testlist_gexp(c, ch); |
| 35742 | 1267 case LSQB: /* list (or list comprehension) */ |
| 1268 ch = CHILD(n, 1); | |
| 1269 | |
| 1270 if (TYPE(ch) == RSQB) | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1271 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1272 |
| 1273 REQ(ch, listmaker); | |
| 1274 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { | |
| 1275 asdl_seq *elts = seq_for_testlist(c, ch); | |
| 1276 if (!elts) | |
| 1277 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
|
1278 |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1279 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1280 } |
| 1281 else | |
| 1282 return ast_for_listcomp(c, ch); | |
| 1283 case LBRACE: { | |
| 1284 /* dictmaker: test ':' test (',' test ':' test)* [','] */ | |
| 1285 int i, size; | |
| 1286 asdl_seq *keys, *values; | |
| 1287 | |
| 1288 ch = CHILD(n, 1); | |
| 1289 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ | |
|
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
|
1290 keys = asdl_seq_new(size, c->c_arena); |
| 35742 | 1291 if (!keys) |
| 1292 return NULL; | |
| 1293 | |
|
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
|
1294 values = asdl_seq_new(size, 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
|
1295 if (!values) |
| 35742 | 1296 return NULL; |
| 1297 | |
| 1298 for (i = 0; i < NCH(ch); i += 4) { | |
| 1299 expr_ty expression; | |
| 1300 | |
| 1301 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
|
1302 if (!expression) |
| 35742 | 1303 return NULL; |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1304 |
| 35742 | 1305 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
|
1306 |
| 35742 | 1307 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
|
1308 if (!expression) |
| 35742 | 1309 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
|
1310 |
| 35742 | 1311 asdl_seq_SET(values, i / 4, expression); |
| 1312 } | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1313 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1314 } |
| 1315 case BACKQUOTE: { /* repr */ | |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
1316 expr_ty expression = ast_for_testlist(c, CHILD(n, 1)); |
| 35742 | 1317 if (!expression) |
| 1318 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
|
1319 |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1320 return Repr(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1321 } |
| 1322 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
1323 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
| 35742 | 1324 return NULL; |
| 1325 } | |
| 1326 } | |
| 1327 | |
| 1328 static slice_ty | |
| 1329 ast_for_slice(struct compiling *c, const node *n) | |
| 1330 { | |
| 1331 node *ch; | |
| 1332 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1333 | |
| 1334 REQ(n, subscript); | |
| 1335 | |
| 1336 /* | |
| 1337 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] | |
| 1338 sliceop: ':' [test] | |
| 1339 */ | |
| 1340 ch = CHILD(n, 0); | |
| 1341 if (TYPE(ch) == DOT) | |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1342 return Ellipsis(c->c_arena); |
| 35742 | 1343 |
| 1344 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1345 /* 'step' variable hold no significance in terms of being used over | |
| 1346 other vars */ | |
| 1347 step = ast_for_expr(c, ch); | |
| 1348 if (!step) | |
| 1349 return NULL; | |
| 1350 | |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1351 return Index(step, c->c_arena); |
| 35742 | 1352 } |
| 1353 | |
| 1354 if (TYPE(ch) == test) { | |
| 1355 lower = ast_for_expr(c, ch); | |
| 1356 if (!lower) | |
| 1357 return NULL; | |
| 1358 } | |
| 1359 | |
| 1360 /* If there's an upper bound it's in the second or third position. */ | |
| 1361 if (TYPE(ch) == COLON) { | |
| 1362 if (NCH(n) > 1) { | |
| 1363 node *n2 = CHILD(n, 1); | |
| 1364 | |
| 1365 if (TYPE(n2) == test) { | |
| 1366 upper = ast_for_expr(c, n2); | |
| 1367 if (!upper) | |
| 1368 return NULL; | |
| 1369 } | |
| 1370 } | |
| 1371 } else if (NCH(n) > 2) { | |
| 1372 node *n2 = CHILD(n, 2); | |
| 1373 | |
| 1374 if (TYPE(n2) == test) { | |
| 1375 upper = ast_for_expr(c, n2); | |
| 1376 if (!upper) | |
| 1377 return NULL; | |
| 1378 } | |
| 1379 } | |
| 1380 | |
| 1381 ch = CHILD(n, NCH(n) - 1); | |
| 1382 if (TYPE(ch) == sliceop) { | |
|
37065
b01c80d88267
Fix bug 1441408 where a double colon didn't trigger extended slice semantics (applies patch 1452332)
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1383 if (NCH(ch) == 1) { |
|
b01c80d88267
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parents:
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diff
changeset
|
1384 /* No expression, so step is None */ |
|
b01c80d88267
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parents:
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diff
changeset
|
1385 ch = CHILD(ch, 0); |
|
b01c80d88267
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parents:
36877
diff
changeset
|
1386 step = Name(new_identifier("None", c->c_arena), Load, |
|
b01c80d88267
Fix bug 1441408 where a double colon didn't trigger extended slice semantics (applies patch 1452332)
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parents:
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diff
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|
1387 LINENO(ch), ch->n_col_offset, c->c_arena); |
| 35742 | 1388 if (!step) |
| 1389 return NULL; | |
|
37065
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Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
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|
1390 } else { |
|
b01c80d88267
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Nick Coghlan <ncoghlan@gmail.com>
parents:
36877
diff
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|
1391 ch = CHILD(ch, 1); |
|
b01c80d88267
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diff
changeset
|
1392 if (TYPE(ch) == test) { |
|
b01c80d88267
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Nick Coghlan <ncoghlan@gmail.com>
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36877
diff
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|
1393 step = ast_for_expr(c, ch); |
|
b01c80d88267
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Nick Coghlan <ncoghlan@gmail.com>
parents:
36877
diff
changeset
|
1394 if (!step) |
|
b01c80d88267
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Nick Coghlan <ncoghlan@gmail.com>
parents:
36877
diff
changeset
|
1395 return NULL; |
|
b01c80d88267
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Nick Coghlan <ncoghlan@gmail.com>
parents:
36877
diff
changeset
|
1396 } |
| 35742 | 1397 } |
| 1398 } | |
| 1399 | |
|
36065
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1400 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1401 } |
| 1402 | |
| 1403 static expr_ty | |
| 1404 ast_for_binop(struct compiling *c, const node *n) | |
| 1405 { | |
| 1406 /* Must account for a sequence of expressions. | |
| 1407 How should A op B op C by represented? | |
| 1408 BinOp(BinOp(A, op, B), op, C). | |
| 1409 */ | |
| 1410 | |
| 1411 int i, nops; | |
| 1412 expr_ty expr1, expr2, result; | |
|
37597
2b2e9c388fbb
low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
Anthony Baxter <anthonybaxter@gmail.com>
parents:
37453
diff
changeset
|
1413 operator_ty newoperator; |
| 35742 | 1414 |
| 1415 expr1 = ast_for_expr(c, CHILD(n, 0)); | |
| 1416 if (!expr1) | |
| 1417 return NULL; | |
| 1418 | |
| 1419 expr2 = ast_for_expr(c, CHILD(n, 2)); | |
| 1420 if (!expr2) | |
| 1421 return NULL; | |
| 1422 | |
|
37597
2b2e9c388fbb
low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
Anthony Baxter <anthonybaxter@gmail.com>
parents:
37453
diff
changeset
|
1423 newoperator = get_operator(CHILD(n, 1)); |
|
2b2e9c388fbb
low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
Anthony Baxter <anthonybaxter@gmail.com>
parents:
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diff
changeset
|
1424 if (!newoperator) |
| 35742 | 1425 return NULL; |
| 1426 | |
|
37597
2b2e9c388fbb
low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
Anthony Baxter <anthonybaxter@gmail.com>
parents:
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diff
changeset
|
1427 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1428 c->c_arena); |
| 35742 | 1429 if (!result) |
| 1430 return NULL; | |
| 1431 | |
| 1432 nops = (NCH(n) - 1) / 2; | |
| 1433 for (i = 1; i < nops; i++) { | |
| 1434 expr_ty tmp_result, tmp; | |
| 1435 const node* next_oper = CHILD(n, i * 2 + 1); | |
| 1436 | |
|
37597
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Anthony Baxter <anthonybaxter@gmail.com>
parents:
37453
diff
changeset
|
1437 newoperator = get_operator(next_oper); |
|
2b2e9c388fbb
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Anthony Baxter <anthonybaxter@gmail.com>
parents:
37453
diff
changeset
|
1438 if (!newoperator) |
| 35742 | 1439 return NULL; |
| 1440 | |
| 1441 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); | |
| 1442 if (!tmp) | |
| 1443 return NULL; | |
| 1444 | |
|
37597
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Anthony Baxter <anthonybaxter@gmail.com>
parents:
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diff
changeset
|
1445 tmp_result = BinOp(result, newoperator, tmp, |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
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37235
diff
changeset
|
1446 LINENO(next_oper), next_oper->n_col_offset, |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1447 c->c_arena); |
| 35742 | 1448 if (!tmp) |
| 1449 return NULL; | |
| 1450 result = tmp_result; | |
| 1451 } | |
| 1452 return result; | |
| 1453 } | |
| 1454 | |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1455 static expr_ty |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1456 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
|
842caa245917
Refactor code for translating "power" nodes.
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|
1457 { |
|
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Fix parsing of subscriptlist.
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parents:
36682
diff
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|
1458 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
|
8611f39cd82b
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diff
changeset
|
1459 subscriptlist: subscript (',' subscript)* [','] |
|
8611f39cd82b
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parents:
36682
diff
changeset
|
1460 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
8611f39cd82b
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diff
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|
1461 */ |
|
35799
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Refactor code for translating "power" nodes.
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diff
changeset
|
1462 REQ(n, trailer); |
|
842caa245917
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diff
changeset
|
1463 if (TYPE(CHILD(n, 0)) == LPAR) { |
|
842caa245917
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
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|
1464 if (NCH(n) == 2) |
|
37453
16a64e394602
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Jeremy Hylton <jeremy@alum.mit.edu>
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diff
changeset
|
1465 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1466 n->n_col_offset, c->c_arena); |
|
35799
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diff
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|
1467 else |
|
36679
e1391910b026
Simplify ast_for_trailer() in anticipation of more changes.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
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|
1468 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
35799
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
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|
1469 } |
|
36679
e1391910b026
Simplify ast_for_trailer() in anticipation of more changes.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36676
diff
changeset
|
1470 else if (TYPE(CHILD(n, 0)) == DOT ) { |
|
e1391910b026
Simplify ast_for_trailer() in anticipation of more changes.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36676
diff
changeset
|
1471 return Attribute(left_expr, NEW_IDENTIFIER(CHILD(n, 1)), Load, |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1472 LINENO(n), n->n_col_offset, c->c_arena); |
|
36679
e1391910b026
Simplify ast_for_trailer() in anticipation of more changes.
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parents:
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diff
changeset
|
1473 } |
|
e1391910b026
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parents:
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diff
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|
1474 else { |
|
e1391910b026
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parents:
36676
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changeset
|
1475 REQ(CHILD(n, 0), LSQB); |
|
35799
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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changeset
|
1476 REQ(CHILD(n, 2), RSQB); |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1477 n = CHILD(n, 1); |
|
36686
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Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1478 if (NCH(n) == 1) { |
|
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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changeset
|
1479 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
842caa245917
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parents:
35798
diff
changeset
|
1480 if (!slc) |
|
842caa245917
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parents:
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diff
changeset
|
1481 return NULL; |
|
37453
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Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1482 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1483 c->c_arena); |
|
35799
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1484 } |
|
842caa245917
Refactor code for translating "power" nodes.
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parents:
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diff
changeset
|
1485 else { |
|
36686
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diff
changeset
|
1486 /* The grammar is ambiguous here. The ambiguity is resolved |
|
8611f39cd82b
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parents:
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diff
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|
1487 by treating the sequence as a tuple literal if there are |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
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|
1488 no slice features. |
|
8611f39cd82b
Fix parsing of subscriptlist.
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diff
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|
1489 */ |
|
35799
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parents:
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diff
changeset
|
1490 int j; |
|
842caa245917
Refactor code for translating "power" nodes.
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parents:
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diff
changeset
|
1491 slice_ty slc; |
|
36686
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Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1492 expr_ty e; |
|
36780
376792bfb57e
Fix uninitialized value. (Why are we using bools instead of ints, like we do
Thomas Wouters <thomas@python.org>
parents:
36742
diff
changeset
|
1493 bool simple = true; |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1494 asdl_seq *slices, *elts; |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1495 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
35799
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
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|
1496 if (!slices) |
|
842caa245917
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parents:
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diff
changeset
|
1497 return NULL; |
|
842caa245917
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1498 for (j = 0; j < NCH(n); j += 2) { |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1499 slc = ast_for_slice(c, CHILD(n, j)); |
|
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
|
1500 if (!slc) |
|
35799
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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changeset
|
1501 return NULL; |
|
36686
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diff
changeset
|
1502 if (slc->kind != Index_kind) |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1503 simple = false; |
|
35799
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diff
changeset
|
1504 asdl_seq_SET(slices, j / 2, slc); |
|
842caa245917
Refactor code for translating "power" nodes.
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parents:
35798
diff
changeset
|
1505 } |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1506 if (!simple) { |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1507 return Subscript(left_expr, ExtSlice(slices, 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
|
1508 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
36686
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Fix parsing of subscriptlist.
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diff
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|
1509 } |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1510 /* extract Index values and put them in a Tuple */ |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1511 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
36877
e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
parents:
36786
diff
changeset
|
1512 if (!elts) |
|
e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
parents:
36786
diff
changeset
|
1513 return NULL; |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1514 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1515 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1516 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1517 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1518 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1519 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1520 if (!e) |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1521 return NULL; |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1522 return Subscript(left_expr, Index(e, 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
|
1523 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1524 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1525 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1526 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1527 |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1528 static expr_ty |
|
39038
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1529 ast_for_factor(struct compiling *c, const node *n) |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1530 { |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1531 node *pfactor, *ppower, *patom, *pnum; |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1532 expr_ty expression; |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1533 |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1534 /* If the unary - operator is applied to a constant, don't generate |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1535 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1536 constant. The peephole optimizer already does something like |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1537 this but it doesn't handle the case where the constant is |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1538 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1539 PyLongObject. |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1540 */ |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1541 if (TYPE(CHILD(n, 0)) == MINUS |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1542 && NCH(n) == 2 |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1543 && TYPE((pfactor = CHILD(n, 1))) == factor |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1544 && NCH(pfactor) == 1 |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1545 && TYPE((ppower = CHILD(pfactor, 0))) == power |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1546 && NCH(ppower) == 1 |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1547 && TYPE((patom = CHILD(ppower, 0))) == atom |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1548 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1549 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1550 if (s == NULL) |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1551 return NULL; |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1552 s[0] = '-'; |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1553 strcpy(s + 1, STR(pnum)); |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1554 PyObject_FREE(STR(pnum)); |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1555 STR(pnum) = s; |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1556 return ast_for_atom(c, patom); |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1557 } |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1558 |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1559 expression = ast_for_expr(c, CHILD(n, 1)); |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1560 if (!expression) |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1561 return NULL; |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1562 |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1563 switch (TYPE(CHILD(n, 0))) { |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1564 case PLUS: |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1565 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1566 c->c_arena); |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1567 case MINUS: |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1568 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1569 c->c_arena); |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1570 case TILDE: |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1571 return UnaryOp(Invert, expression, LINENO(n), |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1572 n->n_col_offset, c->c_arena); |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1573 } |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1574 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1575 TYPE(CHILD(n, 0))); |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1576 return NULL; |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1577 } |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1578 |
|
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1579 static expr_ty |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1580 ast_for_power(struct compiling *c, const node *n) |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1581 { |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1582 /* power: atom trailer* ('**' factor)* |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1583 */ |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1584 int i; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1585 expr_ty e, tmp; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1586 REQ(n, power); |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1587 e = ast_for_atom(c, CHILD(n, 0)); |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1588 if (!e) |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1589 return NULL; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1590 if (NCH(n) == 1) |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1591 return e; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1592 for (i = 1; i < NCH(n); i++) { |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1593 node *ch = CHILD(n, i); |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1594 if (TYPE(ch) != trailer) |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1595 break; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1596 tmp = ast_for_trailer(c, ch, 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
|
1597 if (!tmp) |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1598 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1599 tmp->lineno = e->lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1600 tmp->col_offset = e->col_offset; |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1601 e = tmp; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1602 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1603 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1604 expr_ty f = ast_for_expr(c, CHILD(n, 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
|
1605 if (!f) |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1606 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1607 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1608 if (!tmp) |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1609 return NULL; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1610 e = tmp; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1611 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1612 return e; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1613 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1614 |
| 35742 | 1615 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1616 */ | |
| 1617 | |
| 1618 static expr_ty | |
| 1619 ast_for_expr(struct compiling *c, const node *n) | |
| 1620 { | |
| 1621 /* handle the full range of simple expressions | |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1622 test: or_test ['if' or_test 'else' test] | lambdef |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1623 or_test: and_test ('or' and_test)* |
| 35742 | 1624 and_test: not_test ('and' not_test)* |
| 1625 not_test: 'not' not_test | comparison | |
| 1626 comparison: expr (comp_op expr)* | |
| 1627 expr: xor_expr ('|' xor_expr)* | |
| 1628 xor_expr: and_expr ('^' and_expr)* | |
| 1629 and_expr: shift_expr ('&' shift_expr)* | |
| 1630 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1631 arith_expr: term (('+'|'-') term)* | |
| 1632 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1633 factor: ('+'|'-'|'~') factor | power | |
| 1634 power: atom trailer* ('**' factor)* | |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1635 |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1636 As well as modified versions that exist for backward compatibility, |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1637 to explicitly allow: |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1638 [ x for x in lambda: 0, lambda: 1 ] |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1639 (which would be ambiguous without these extra rules) |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1640 |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1641 old_test: or_test | old_lambdef |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1642 old_lambdef: 'lambda' [vararglist] ':' old_test |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1643 |
| 35742 | 1644 */ |
| 1645 | |
| 1646 asdl_seq *seq; | |
| 1647 int i; | |
| 1648 | |
| 1649 loop: | |
| 1650 switch (TYPE(n)) { | |
| 1651 case test: | |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1652 case old_test: |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1653 if (TYPE(CHILD(n, 0)) == lambdef || |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1654 TYPE(CHILD(n, 0)) == old_lambdef) |
| 35742 | 1655 return ast_for_lambdef(c, CHILD(n, 0)); |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1656 else if (NCH(n) > 1) |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1657 return ast_for_ifexpr(c, n); |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1658 /* Fallthrough */ |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1659 case or_test: |
| 35742 | 1660 case and_test: |
| 1661 if (NCH(n) == 1) { | |
| 1662 n = CHILD(n, 0); | |
| 1663 goto loop; | |
| 1664 } | |
|
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
|
1665 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1666 if (!seq) |
| 1667 return NULL; | |
| 1668 for (i = 0; i < NCH(n); i += 2) { | |
| 1669 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1670 if (!e) | |
| 1671 return NULL; | |
| 1672 asdl_seq_SET(seq, i / 2, e); | |
| 1673 } | |
| 1674 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1675 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1676 c->c_arena); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1677 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
|
1678 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1679 case not_test: |
| 1680 if (NCH(n) == 1) { | |
| 1681 n = CHILD(n, 0); | |
| 1682 goto loop; | |
| 1683 } | |
| 1684 else { | |
| 1685 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1686 if (!expression) | |
| 1687 return NULL; | |
| 1688 | |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1689 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1690 c->c_arena); |
| 35742 | 1691 } |
| 1692 case comparison: | |
| 1693 if (NCH(n) == 1) { | |
| 1694 n = CHILD(n, 0); | |
| 1695 goto loop; | |
| 1696 } | |
| 1697 else { | |
| 1698 expr_ty expression; | |
|
37685
5e72b0c74100
Introduce asdl_int_seq, to hold cmpop_ty.
Martin v. Löwis <martin@v.loewis.de>
parents:
37604
diff
changeset
|
1699 asdl_int_seq *ops; |
|
5e72b0c74100
Introduce asdl_int_seq, to hold cmpop_ty.
Martin v. Löwis <martin@v.loewis.de>
parents:
37604
diff
changeset
|
1700 asdl_seq *cmps; |
|
5e72b0c74100
Introduce asdl_int_seq, to hold cmpop_ty.
Martin v. Löwis <martin@v.loewis.de>
parents:
37604
diff
changeset
|
1701 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1702 if (!ops) |
| 1703 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
|
1704 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1705 if (!cmps) { |
| 1706 return NULL; | |
| 1707 } | |
| 1708 for (i = 1; i < NCH(n); i += 2) { | |
|
37597
2b2e9c388fbb
low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
Anthony Baxter <anthonybaxter@gmail.com>
parents:
37453
diff
changeset
|
1709 cmpop_ty newoperator; |
| 35742 | 1710 |
|
37597
2b2e9c388fbb
low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
Anthony Baxter <anthonybaxter@gmail.com>
parents:
37453
diff
changeset
|
1711 newoperator = ast_for_comp_op(CHILD(n, i)); |
|
2b2e9c388fbb
low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
Anthony Baxter <anthonybaxter@gmail.com>
parents:
37453
diff
changeset
|
1712 if (!newoperator) { |
| 35742 | 1713 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
|
1714 } |
| 35742 | 1715 |
| 1716 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
|
1717 if (!expression) { |
| 35742 | 1718 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
|
1719 } |
| 35742 | 1720 |
|
37685
5e72b0c74100
Introduce asdl_int_seq, to hold cmpop_ty.
Martin v. Löwis <martin@v.loewis.de>
parents:
37604
diff
changeset
|
1721 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1722 asdl_seq_SET(cmps, i / 2, expression); |
| 1723 } | |
| 1724 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
|
1725 if (!expression) { |
| 35742 | 1726 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
|
1727 } |
| 35742 | 1728 |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1729 return Compare(expression, ops, cmps, LINENO(n), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
1730 n->n_col_offset, c->c_arena); |
| 35742 | 1731 } |
| 1732 break; | |
| 1733 | |
| 1734 /* The next five cases all handle BinOps. The main body of code | |
| 1735 is the same in each case, but the switch turned inside out to | |
| 1736 reuse the code for each type of operator. | |
| 1737 */ | |
| 1738 case expr: | |
| 1739 case xor_expr: | |
| 1740 case and_expr: | |
| 1741 case shift_expr: | |
| 1742 case arith_expr: | |
| 1743 case term: | |
| 1744 if (NCH(n) == 1) { | |
| 1745 n = CHILD(n, 0); | |
| 1746 goto loop; | |
| 1747 } | |
| 1748 return ast_for_binop(c, n); | |
| 1749 case yield_expr: { | |
| 1750 expr_ty exp = NULL; | |
| 1751 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
|
1752 exp = ast_for_testlist(c, CHILD(n, 1)); |
| 35742 | 1753 if (!exp) |
| 1754 return NULL; | |
| 1755 } | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1756 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1757 } |
|
39038
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1758 case factor: |
| 35742 | 1759 if (NCH(n) == 1) { |
| 1760 n = CHILD(n, 0); | |
| 1761 goto loop; | |
| 1762 } | |
|
39038
64ccd745ea92
Fix SF bug 1441486: bad unary minus folding in compiler.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
39037
diff
changeset
|
1763 return ast_for_factor(c, n); |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1764 case power: |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1765 return ast_for_power(c, n); |
| 35742 | 1766 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
1767 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1768 return NULL; |
| 1769 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1770 /* should never get here unless if error is set */ |
| 35742 | 1771 return NULL; |
| 1772 } | |
| 1773 | |
| 1774 static expr_ty | |
| 1775 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1776 { | |
| 1777 /* | |
| 1778 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1779 | '**' test) | |
| 1780 argument: [test '='] test [gen_for] # Really [keyword '='] test | |
| 1781 */ | |
| 1782 | |
| 1783 int i, nargs, nkeywords, ngens; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1784 asdl_seq *args; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1785 asdl_seq *keywords; |
| 35742 | 1786 expr_ty vararg = NULL, kwarg = NULL; |
| 1787 | |
| 1788 REQ(n, arglist); | |
| 1789 | |
| 1790 nargs = 0; | |
| 1791 nkeywords = 0; | |
| 1792 ngens = 0; | |
| 1793 for (i = 0; i < NCH(n); i++) { | |
| 1794 node *ch = CHILD(n, i); | |
| 1795 if (TYPE(ch) == argument) { | |
| 1796 if (NCH(ch) == 1) | |
| 1797 nargs++; | |
| 1798 else if (TYPE(CHILD(ch, 1)) == gen_for) | |
| 1799 ngens++; | |
| 1800 else | |
| 1801 nkeywords++; | |
| 1802 } | |
| 1803 } | |
| 1804 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
1805 ast_error(n, "Generator expression must be parenthesized " |
| 35742 | 1806 "if not sole argument"); |
| 1807 return NULL; | |
| 1808 } | |
| 1809 | |
| 1810 if (nargs + nkeywords + ngens > 255) { | |
| 1811 ast_error(n, "more than 255 arguments"); | |
| 1812 return NULL; | |
| 1813 } | |
| 1814 | |
|
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
|
1815 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1816 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
|
1817 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
|
1818 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1819 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
|
1820 return NULL; |
| 35742 | 1821 nargs = 0; |
| 1822 nkeywords = 0; | |
| 1823 for (i = 0; i < NCH(n); i++) { | |
| 1824 node *ch = CHILD(n, i); | |
| 1825 if (TYPE(ch) == argument) { | |
| 1826 expr_ty e; | |
| 1827 if (NCH(ch) == 1) { | |
|
38218
26fb563881c9
Fix #1474677, non-keyword argument following keyword.
Neal Norwitz <nnorwitz@gmail.com>
parents:
38181
diff
changeset
|
1828 if (nkeywords) { |
|
26fb563881c9
Fix #1474677, non-keyword argument following keyword.
Neal Norwitz <nnorwitz@gmail.com>
parents:
38181
diff
changeset
|
1829 ast_error(CHILD(ch, 0), |
|
26fb563881c9
Fix #1474677, non-keyword argument following keyword.
Neal Norwitz <nnorwitz@gmail.com>
parents:
38181
diff
changeset
|
1830 "non-keyword arg after keyword arg"); |
|
26fb563881c9
Fix #1474677, non-keyword argument following keyword.
Neal Norwitz <nnorwitz@gmail.com>
parents:
38181
diff
changeset
|
1831 return NULL; |
|
26fb563881c9
Fix #1474677, non-keyword argument following keyword.
Neal Norwitz <nnorwitz@gmail.com>
parents:
38181
diff
changeset
|
1832 } |
| 35742 | 1833 e = ast_for_expr(c, CHILD(ch, 0)); |
| 1834 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
|
1835 return NULL; |
| 35742 | 1836 asdl_seq_SET(args, nargs++, e); |
| 1837 } | |
| 1838 else if (TYPE(CHILD(ch, 1)) == gen_for) { | |
| 1839 e = ast_for_genexp(c, ch); | |
| 1840 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
|
1841 return NULL; |
| 35742 | 1842 asdl_seq_SET(args, nargs++, e); |
| 1843 } | |
| 1844 else { | |
| 1845 keyword_ty kw; | |
| 1846 identifier key; | |
| 1847 | |
| 1848 /* CHILD(ch, 0) is test, but must be an identifier? */ | |
| 1849 e = ast_for_expr(c, CHILD(ch, 0)); | |
| 1850 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
|
1851 return NULL; |
| 35742 | 1852 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1853 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 1854 * SF bug 132313 points out that complaining about a keyword | |
| 1855 * then is very confusing. | |
| 1856 */ | |
| 1857 if (e->kind == Lambda_kind) { | |
| 1858 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
|
1859 return NULL; |
| 35742 | 1860 } else if (e->kind != Name_kind) { |
| 1861 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
|
1862 return NULL; |
| 35742 | 1863 } |
| 1864 key = e->v.Name.id; | |
| 1865 e = ast_for_expr(c, CHILD(ch, 2)); | |
| 1866 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
|
1867 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
|
1868 kw = keyword(key, e, c->c_arena); |
| 35742 | 1869 if (!kw) |
|
36065
ea083efdc96c
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1870 return NULL; |
| 35742 | 1871 asdl_seq_SET(keywords, nkeywords++, kw); |
| 1872 } | |
| 1873 } | |
| 1874 else if (TYPE(ch) == STAR) { | |
| 1875 vararg = ast_for_expr(c, CHILD(n, i+1)); | |
| 1876 i++; | |
| 1877 } | |
| 1878 else if (TYPE(ch) == DOUBLESTAR) { | |
| 1879 kwarg = ast_for_expr(c, CHILD(n, i+1)); | |
| 1880 i++; | |
| 1881 } | |
| 1882 } | |
| 1883 | |
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1884 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 1885 } |
| 1886 | |
| 1887 static expr_ty | |
|
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1888 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 1889 { |
|
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1890 /* testlist_gexp: test (',' test)* [','] */ |
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1891 /* testlist: test (',' test)* [','] */ |
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1892 /* testlist_safe: test (',' test)+ [','] */ |
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1893 /* testlist1: test (',' test)* */ |
| 35742 | 1894 assert(NCH(n) > 0); |
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1895 if (TYPE(n) == testlist_gexp) { |
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1896 if (NCH(n) > 1) |
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1897 assert(TYPE(CHILD(n, 1)) != gen_for); |
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1898 } |
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1899 else { |
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1900 assert(TYPE(n) == testlist || |
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1901 TYPE(n) == testlist_safe || |
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1902 TYPE(n) == testlist1); |
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1903 } |
| 35742 | 1904 if (NCH(n) == 1) |
| 1905 return ast_for_expr(c, CHILD(n, 0)); | |
| 1906 else { | |
| 1907 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 1908 if (!tmp) | |
| 1909 return NULL; | |
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1910 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1911 } |
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1912 } |
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1913 |
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1914 static expr_ty |
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1915 ast_for_testlist_gexp(struct compiling *c, const node* n) |
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1916 { |
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1917 /* testlist_gexp: test ( gen_for | (',' test)* [','] ) */ |
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1918 /* argument: test [ gen_for ] */ |
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1919 assert(TYPE(n) == testlist_gexp || TYPE(n) == argument); |
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1920 if (NCH(n) > 1 && TYPE(CHILD(n, 1)) == gen_for) |
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1921 return ast_for_genexp(c, n); |
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1922 return ast_for_testlist(c, n); |
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1923 } |
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1924 |
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1925 /* like ast_for_testlist() but returns a sequence */ |
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1926 static asdl_seq* |
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1927 ast_for_class_bases(struct compiling *c, const node* n) |
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1928 { |
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1929 /* testlist: test (',' test)* [','] */ |
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1930 assert(NCH(n) > 0); |
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1931 REQ(n, testlist); |
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1932 if (NCH(n) == 1) { |
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1933 expr_ty base; |
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1934 asdl_seq *bases = asdl_seq_new(1, c->c_arena); |
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1935 if (!bases) |
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1936 return NULL; |
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1937 base = ast_for_expr(c, CHILD(n, 0)); |
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1938 if (!base) |
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1939 return NULL; |
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1940 asdl_seq_SET(bases, 0, base); |
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1941 return bases; |
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1942 } |
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1943 |
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1944 return seq_for_testlist(c, n); |
| 35742 | 1945 } |
| 1946 | |
| 1947 static stmt_ty | |
| 1948 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 1949 { | |
| 1950 REQ(n, expr_stmt); | |
| 1951 /* expr_stmt: testlist (augassign (yield_expr|testlist) | |
| 1952 | ('=' (yield_expr|testlist))*) | |
| 1953 testlist: test (',' test)* [','] | |
| 1954 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | |
| 1955 | '<<=' | '>>=' | '**=' | '//=' | |
| 1956 test: ... here starts the operator precendence dance | |
| 1957 */ | |
| 1958 | |
| 1959 if (NCH(n) == 1) { | |
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1960 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 1961 if (!e) |
| 1962 return NULL; | |
| 1963 | |
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1964 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1965 } |
| 1966 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 1967 expr_ty expr1, expr2; | |
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1968 operator_ty newoperator; |
| 35742 | 1969 node *ch = CHILD(n, 0); |
| 1970 | |
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1971 expr1 = ast_for_testlist(c, ch); |
| 35742 | 1972 if (!expr1) |
| 1973 return NULL; | |
|
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1974 /* TODO(nas): Remove duplicated error checks (set_context does it) */ |
|
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1975 switch (expr1->kind) { |
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1976 case GeneratorExp_kind: |
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1977 ast_error(ch, "augmented assignment to generator " |
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1978 "expression not possible"); |
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1979 return NULL; |
|
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1980 case Yield_kind: |
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1981 ast_error(ch, "augmented assignment to yield " |
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1982 "expression not possible"); |
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1983 return NULL; |
|
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1984 case Name_kind: { |
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1985 const char *var_name = PyString_AS_STRING(expr1->v.Name.id); |
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1986 if (var_name[0] == 'N' && !strcmp(var_name, "None")) { |
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1987 ast_error(ch, "assignment to None"); |
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1988 return NULL; |
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1989 } |
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1990 break; |
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1991 } |
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1992 case Attribute_kind: |
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1993 case Subscript_kind: |
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1994 break; |
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1995 default: |
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1996 ast_error(ch, "illegal expression for augmented " |
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1997 "assignment"); |
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|
1998 return NULL; |
| 35742 | 1999 } |
|
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40288
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changeset
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2000 if (!set_context(expr1, Store, ch)) |
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2001 return NULL; |
| 35742 | 2002 |
| 2003 ch = CHILD(n, 2); | |
| 2004 if (TYPE(ch) == testlist) | |
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2005 expr2 = ast_for_testlist(c, ch); |
| 35742 | 2006 else |
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2007 expr2 = ast_for_expr(c, ch); |
|
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2008 if (!expr2) |
| 35742 | 2009 return NULL; |
| 2010 | |
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2011 newoperator = ast_for_augassign(CHILD(n, 1)); |
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2012 if (!newoperator) |
| 35742 | 2013 return NULL; |
| 2014 | |
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2015 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2016 } |
| 2017 else { | |
| 2018 int i; | |
| 2019 asdl_seq *targets; | |
| 2020 node *value; | |
| 2021 expr_ty expression; | |
| 2022 | |
| 2023 /* a normal assignment */ | |
| 2024 REQ(CHILD(n, 1), EQUAL); | |
|
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|
2025 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2026 if (!targets) |
| 2027 return NULL; | |
| 2028 for (i = 0; i < NCH(n) - 2; i += 2) { | |
|
35759
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ANSI-C-ify the placement of local var declarations.
Armin Rigo <arigo@tunes.org>
parents:
35748
diff
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|
2029 expr_ty e; |
| 35742 | 2030 node *ch = CHILD(n, i); |
| 2031 if (TYPE(ch) == yield_expr) { | |
| 2032 ast_error(ch, "assignment to yield expression not possible"); | |
|
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
|
2033 return NULL; |
| 35742 | 2034 } |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2035 e = ast_for_testlist(c, ch); |
| 35742 | 2036 |
| 2037 /* set context to assign */ | |
| 2038 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
|
2039 return NULL; |
| 35742 | 2040 |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2041 if (!set_context(e, Store, CHILD(n, 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
|
2042 return NULL; |
| 35742 | 2043 |
| 2044 asdl_seq_SET(targets, i / 2, e); | |
| 2045 } | |
| 2046 value = CHILD(n, NCH(n) - 1); | |
| 2047 if (TYPE(value) == testlist) | |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2048 expression = ast_for_testlist(c, value); |
| 35742 | 2049 else |
| 2050 expression = ast_for_expr(c, value); | |
| 2051 if (!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
|
2052 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2053 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2054 } |
| 2055 } | |
| 2056 | |
| 2057 static stmt_ty | |
| 2058 ast_for_print_stmt(struct compiling *c, const node *n) | |
| 2059 { | |
| 2060 /* print_stmt: 'print' ( [ test (',' test)* [','] ] | |
| 2061 | '>>' test [ (',' test)+ [','] ] ) | |
| 2062 */ | |
| 2063 expr_ty dest = NULL, expression; | |
| 2064 asdl_seq *seq; | |
| 2065 bool nl; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2066 int i, j, start = 1; |
| 35742 | 2067 |
| 2068 REQ(n, print_stmt); | |
| 2069 if (NCH(n) >= 2 && TYPE(CHILD(n, 1)) == RIGHTSHIFT) { | |
| 2070 dest = ast_for_expr(c, CHILD(n, 2)); | |
| 2071 if (!dest) | |
| 2072 return NULL; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2073 start = 4; |
| 35742 | 2074 } |
|
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
|
2075 seq = asdl_seq_new((NCH(n) + 1 - start) / 2, c->c_arena); |
| 35742 | 2076 if (!seq) |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2077 return NULL; |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2078 for (i = start, j = 0; i < NCH(n); i += 2, ++j) { |
| 35742 | 2079 expression = ast_for_expr(c, CHILD(n, i)); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2080 if (!expression) |
| 35742 | 2081 return NULL; |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2082 asdl_seq_SET(seq, j, expression); |
| 35742 | 2083 } |
| 2084 nl = (TYPE(CHILD(n, NCH(n) - 1)) == COMMA) ? false : true; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2085 return Print(dest, seq, nl, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2086 } |
| 2087 | |
| 2088 static asdl_seq * | |
|
37604
c732f66c913f
Convert 0 to their respective enum types. Convert
Martin v. Löwis <martin@v.loewis.de>
parents:
37597
diff
changeset
|
2089 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2090 { |
| 2091 asdl_seq *seq; | |
| 2092 int i; | |
| 2093 expr_ty e; | |
| 2094 | |
| 2095 REQ(n, exprlist); | |
| 2096 | |
|
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
|
2097 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2098 if (!seq) |
| 2099 return NULL; | |
| 2100 for (i = 0; i < NCH(n); i += 2) { | |
| 2101 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
|
2102 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
|
2103 return NULL; |
|
35875
086caccfff0e
Fix another memory leak or two (one real, one potential)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35874
diff
changeset
|
2104 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
|
2105 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
|
2106 return NULL; |
| 35742 | 2107 } |
| 2108 return seq; | |
| 2109 } | |
| 2110 | |
| 2111 static stmt_ty | |
| 2112 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2113 { | |
| 2114 asdl_seq *expr_list; | |
| 2115 | |
| 2116 /* del_stmt: 'del' exprlist */ | |
| 2117 REQ(n, del_stmt); | |
| 2118 | |
| 2119 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2120 if (!expr_list) | |
| 2121 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2122 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2123 } |
| 2124 | |
| 2125 static stmt_ty | |
| 2126 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2127 { | |
| 2128 /* | |
| 2129 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2130 | yield_stmt | |
| 2131 break_stmt: 'break' | |
| 2132 continue_stmt: 'continue' | |
| 2133 return_stmt: 'return' [testlist] | |
| 2134 yield_stmt: yield_expr | |
| 2135 yield_expr: 'yield' testlist | |
| 2136 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2137 */ | |
| 2138 node *ch; | |
| 2139 | |
| 2140 REQ(n, flow_stmt); | |
| 2141 ch = CHILD(n, 0); | |
| 2142 switch (TYPE(ch)) { | |
| 2143 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
|
2144 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2145 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
|
2146 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2147 case yield_stmt: { /* will reduce to yield_expr */ |
| 2148 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); | |
| 2149 if (!exp) | |
| 2150 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2151 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2152 } |
| 2153 case return_stmt: | |
| 2154 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
|
2155 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2156 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2157 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2158 if (!expression) |
| 2159 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2160 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2161 } |
| 2162 case raise_stmt: | |
| 2163 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
|
2164 return Raise(NULL, NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2165 else if (NCH(ch) == 2) { |
| 2166 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); | |
| 2167 if (!expression) | |
| 2168 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2169 return Raise(expression, NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2170 } |
| 2171 else if (NCH(ch) == 4) { | |
| 2172 expr_ty expr1, expr2; | |
| 2173 | |
| 2174 expr1 = ast_for_expr(c, CHILD(ch, 1)); | |
| 2175 if (!expr1) | |
| 2176 return NULL; | |
| 2177 expr2 = ast_for_expr(c, CHILD(ch, 3)); | |
| 2178 if (!expr2) | |
| 2179 return NULL; | |
| 2180 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2181 return Raise(expr1, expr2, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2182 } |
| 2183 else if (NCH(ch) == 6) { | |
| 2184 expr_ty expr1, expr2, expr3; | |
| 2185 | |
| 2186 expr1 = ast_for_expr(c, CHILD(ch, 1)); | |
| 2187 if (!expr1) | |
| 2188 return NULL; | |
| 2189 expr2 = ast_for_expr(c, CHILD(ch, 3)); | |
| 2190 if (!expr2) | |
| 2191 return NULL; | |
| 2192 expr3 = ast_for_expr(c, CHILD(ch, 5)); | |
| 2193 if (!expr3) | |
| 2194 return NULL; | |
| 2195 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2196 return Raise(expr1, expr2, expr3, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2197 } |
| 2198 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2199 PyErr_Format(PyExc_SystemError, |
| 35742 | 2200 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2201 return NULL; | |
| 2202 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2203 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2204 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
|
2205 return NULL; |
| 35742 | 2206 } |
| 2207 | |
| 2208 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
|
2209 alias_for_import_name(struct compiling *c, const node *n) |
| 35742 | 2210 { |
| 2211 /* | |
|
36742
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
36718
diff
changeset
|
2212 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
|
2213 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2214 dotted_name: NAME ('.' NAME)* |
| 2215 */ | |
|
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
|
2216 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
|
2217 |
| 35742 | 2218 loop: |
| 2219 switch (TYPE(n)) { | |
| 2220 case import_as_name: | |
|
39034
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2221 str = NULL; |
|
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2222 if (NCH(n) == 3) { |
|
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2223 if (strcmp(STR(CHILD(n, 1)), "as") != 0) { |
|
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2224 ast_error(n, "must use 'as' in import"); |
|
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2225 return NULL; |
|
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2226 } |
|
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2227 str = NEW_IDENTIFIER(CHILD(n, 2)); |
|
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2228 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2229 return alias(NEW_IDENTIFIER(CHILD(n, 0)), str, c->c_arena); |
| 35742 | 2230 case dotted_as_name: |
| 2231 if (NCH(n) == 1) { | |
| 2232 n = CHILD(n, 0); | |
| 2233 goto loop; | |
| 2234 } | |
| 2235 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
|
2236 alias_ty a = alias_for_import_name(c, CHILD(n, 0)); |
|
39445
e11caad7e029
Klocwork made another run and found a bunch more problems.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39317
diff
changeset
|
2237 if (!a) |
|
e11caad7e029
Klocwork made another run and found a bunch more problems.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39317
diff
changeset
|
2238 return NULL; |
|
39034
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2239 if (strcmp(STR(CHILD(n, 1)), "as") != 0) { |
|
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2240 ast_error(n, "must use 'as' in import"); |
|
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2241 return NULL; |
|
066aa42ce5f2
Fix SF bug #1519018: 'as' is now validated properly in import statements
Neal Norwitz <nnorwitz@gmail.com>
parents:
38406
diff
changeset
|
2242 } |
| 35742 | 2243 assert(!a->asname); |
| 2244 a->asname = NEW_IDENTIFIER(CHILD(n, 2)); | |
| 2245 return a; | |
| 2246 } | |
| 2247 break; | |
| 2248 case dotted_name: | |
| 2249 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
|
2250 return alias(NEW_IDENTIFIER(CHILD(n, 0)), NULL, c->c_arena); |
| 35742 | 2251 else { |
| 2252 /* 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
|
2253 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2254 size_t len; |
| 35742 | 2255 char *s; |
| 2256 | |
| 2257 len = 0; | |
| 2258 for (i = 0; i < NCH(n); i += 2) | |
| 2259 /* length of string plus one for the dot */ | |
| 2260 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2261 len--; /* the last name doesn't have a dot */ | |
| 2262 str = PyString_FromStringAndSize(NULL, len); | |
| 2263 if (!str) | |
| 2264 return NULL; | |
| 2265 s = PyString_AS_STRING(str); | |
| 2266 if (!s) | |
| 2267 return NULL; | |
| 2268 for (i = 0; i < NCH(n); i += 2) { | |
| 2269 char *sch = STR(CHILD(n, i)); | |
| 2270 strcpy(s, STR(CHILD(n, i))); | |
| 2271 s += strlen(sch); | |
| 2272 *s++ = '.'; | |
| 2273 } | |
| 2274 --s; | |
| 2275 *s = '\0'; | |
| 2276 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
|
2277 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
|
2278 return alias(str, NULL, c->c_arena); |
| 35742 | 2279 } |
| 2280 break; | |
| 2281 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
|
2282 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
|
2283 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
|
2284 return alias(str, NULL, c->c_arena); |
| 35742 | 2285 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2286 PyErr_Format(PyExc_SystemError, |
| 35742 | 2287 "unexpected import name: %d", TYPE(n)); |
| 2288 return NULL; | |
| 2289 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2290 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2291 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2292 return NULL; |
| 2293 } | |
| 2294 | |
| 2295 static stmt_ty | |
| 2296 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2297 { | |
| 2298 /* | |
| 2299 import_stmt: import_name | import_from | |
| 2300 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
|
2301 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
|
2302 ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2303 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2304 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2305 int col_offset; |
| 35742 | 2306 int i; |
| 2307 asdl_seq *aliases; | |
| 2308 | |
| 2309 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
|
2310 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2311 col_offset = n->n_col_offset; |
| 35742 | 2312 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2313 if (TYPE(n) == import_name) { |
| 35742 | 2314 n = CHILD(n, 1); |
|
35771
044d8e0f65f2
Add an assert.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35759
diff
changeset
|
2315 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
|
2316 aliases = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2317 if (!aliases) |
| 2318 return NULL; | |
| 2319 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
|
2320 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
|
2321 if (!import_alias) |
| 35742 | 2322 return NULL; |
| 2323 asdl_seq_SET(aliases, i / 2, import_alias); | |
| 2324 } | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2325 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2326 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2327 else if (TYPE(n) == import_from) { |
| 35742 | 2328 int n_children; |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2329 int idx, ndots = 0; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2330 alias_ty mod = NULL; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2331 identifier modname; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2332 |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2333 /* 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
|
2334 optional module name */ |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2335 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
|
2336 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
|
2337 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
|
2338 idx++; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2339 break; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2340 } 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
|
2341 break; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2342 } |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2343 ndots++; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2344 } |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2345 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
|
2346 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2347 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2348 /* from ... import * */ |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2349 n = CHILD(n, idx); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2350 n_children = 1; |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2351 if (ndots) { |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2352 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
|
2353 return NULL; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2354 } |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2355 break; |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2356 case LPAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2357 /* 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
|
2358 n = CHILD(n, idx + 1); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2359 n_children = NCH(n); |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2360 break; |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2361 case import_as_names: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2362 /* 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
|
2363 n = CHILD(n, idx); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2364 n_children = NCH(n); |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2365 if (n_children % 2 == 0) { |
| 35742 | 2366 ast_error(n, "trailing comma not allowed without" |
| 2367 " surrounding parentheses"); | |
| 2368 return NULL; | |
| 2369 } | |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2370 break; |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2371 default: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2372 ast_error(n, "Unexpected node-type in from-import"); |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2373 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
|
2374 } |
| 35742 | 2375 |
|
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
|
2376 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
|
2377 if (!aliases) |
| 35742 | 2378 return NULL; |
| 2379 | |
| 2380 /* 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
|
2381 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
|
2382 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
|
2383 if (!import_alias) |
| 35742 | 2384 return NULL; |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2385 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2386 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2387 else { |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2388 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
|
2389 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
|
2390 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2391 return NULL; |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2392 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
|
2393 } |
| 35742 | 2394 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2395 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2396 modname = mod->name; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2397 else |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2398 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
|
2399 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
|
2400 c->c_arena); |
| 35742 | 2401 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2402 PyErr_Format(PyExc_SystemError, |
| 35742 | 2403 "unknown import statement: starts with command '%s'", |
| 2404 STR(CHILD(n, 0))); | |
| 2405 return NULL; | |
| 2406 } | |
| 2407 | |
| 2408 static stmt_ty | |
| 2409 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2410 { | |
| 2411 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2412 identifier name; | |
| 2413 asdl_seq *s; | |
| 2414 int i; | |
| 2415 | |
| 2416 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
|
2417 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2418 if (!s) |
| 2419 return NULL; | |
| 2420 for (i = 1; i < NCH(n); i += 2) { | |
| 2421 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
|
2422 if (!name) |
| 35742 | 2423 return NULL; |
| 2424 asdl_seq_SET(s, i / 2, name); | |
| 2425 } | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2426 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2427 } |
| 2428 | |
| 2429 static stmt_ty | |
| 2430 ast_for_exec_stmt(struct compiling *c, const node *n) | |
| 2431 { | |
| 2432 expr_ty expr1, globals = NULL, locals = NULL; | |
| 2433 int n_children = NCH(n); | |
| 2434 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
|
2435 PyErr_Format(PyExc_SystemError, |
| 35742 | 2436 "poorly formed 'exec' statement: %d parts to statement", |
| 2437 n_children); | |
| 2438 return NULL; | |
| 2439 } | |
| 2440 | |
| 2441 /* exec_stmt: 'exec' expr ['in' test [',' test]] */ | |
| 2442 REQ(n, exec_stmt); | |
| 2443 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2444 if (!expr1) | |
| 2445 return NULL; | |
| 2446 if (n_children >= 4) { | |
| 2447 globals = ast_for_expr(c, CHILD(n, 3)); | |
| 2448 if (!globals) | |
| 2449 return NULL; | |
| 2450 } | |
| 2451 if (n_children == 6) { | |
| 2452 locals = ast_for_expr(c, CHILD(n, 5)); | |
| 2453 if (!locals) | |
| 2454 return NULL; | |
| 2455 } | |
| 2456 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2457 return Exec(expr1, globals, locals, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2458 } |
| 2459 | |
| 2460 static stmt_ty | |
| 2461 ast_for_assert_stmt(struct compiling *c, const node *n) | |
| 2462 { | |
| 2463 /* assert_stmt: 'assert' test [',' test] */ | |
| 2464 REQ(n, assert_stmt); | |
| 2465 if (NCH(n) == 2) { | |
| 2466 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2467 if (!expression) | |
| 2468 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2469 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2470 } |
| 2471 else if (NCH(n) == 4) { | |
| 2472 expr_ty expr1, expr2; | |
| 2473 | |
| 2474 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2475 if (!expr1) | |
| 2476 return NULL; | |
| 2477 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2478 if (!expr2) | |
| 2479 return NULL; | |
| 2480 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2481 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2482 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2483 PyErr_Format(PyExc_SystemError, |
| 35742 | 2484 "improper number of parts to 'assert' statement: %d", |
| 2485 NCH(n)); | |
| 2486 return NULL; | |
| 2487 } | |
| 2488 | |
| 2489 static asdl_seq * | |
| 2490 ast_for_suite(struct compiling *c, const node *n) | |
| 2491 { | |
| 2492 /* 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
|
2493 asdl_seq *seq; |
| 35742 | 2494 stmt_ty s; |
| 2495 int i, total, num, end, pos = 0; | |
| 2496 node *ch; | |
| 2497 | |
| 2498 REQ(n, suite); | |
| 2499 | |
| 2500 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
|
2501 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2502 if (!seq) |
| 2503 return NULL; | |
| 2504 if (TYPE(CHILD(n, 0)) == simple_stmt) { | |
| 2505 n = CHILD(n, 0); | |
| 2506 /* simple_stmt always ends with a NEWLINE, | |
| 2507 and may have a trailing SEMI | |
| 2508 */ | |
| 2509 end = NCH(n) - 1; | |
| 2510 if (TYPE(CHILD(n, end - 1)) == SEMI) | |
| 2511 end--; | |
| 2512 /* loop by 2 to skip semi-colons */ | |
| 2513 for (i = 0; i < end; i += 2) { | |
| 2514 ch = CHILD(n, i); | |
| 2515 s = ast_for_stmt(c, ch); | |
| 2516 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
|
2517 return NULL; |
| 35742 | 2518 asdl_seq_SET(seq, pos++, s); |
| 2519 } | |
| 2520 } | |
| 2521 else { | |
| 2522 for (i = 2; i < (NCH(n) - 1); i++) { | |
| 2523 ch = CHILD(n, i); | |
| 2524 REQ(ch, stmt); | |
| 2525 num = num_stmts(ch); | |
| 2526 if (num == 1) { | |
| 2527 /* small_stmt or compound_stmt with only one child */ | |
| 2528 s = ast_for_stmt(c, ch); | |
| 2529 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
|
2530 return NULL; |
| 35742 | 2531 asdl_seq_SET(seq, pos++, s); |
| 2532 } | |
| 2533 else { | |
| 2534 int j; | |
| 2535 ch = CHILD(ch, 0); | |
| 2536 REQ(ch, simple_stmt); | |
| 2537 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
|
2538 /* statement terminates with a semi-colon ';' */ |
|
6321669f2f4d
SF #1377897, Bus error in ast
Neal Norwitz <nnorwitz@gmail.com>
parents:
36000
diff
changeset
|
2539 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
|
2540 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
|
2541 break; |
|
36001
6321669f2f4d
SF #1377897, Bus error in ast
Neal Norwitz <nnorwitz@gmail.com>
parents:
36000
diff
changeset
|
2542 } |
| 35742 | 2543 s = ast_for_stmt(c, CHILD(ch, j)); |
| 2544 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
|
2545 return NULL; |
| 35742 | 2546 asdl_seq_SET(seq, pos++, s); |
| 2547 } | |
| 2548 } | |
| 2549 } | |
| 2550 } | |
| 2551 assert(pos == seq->size); | |
| 2552 return seq; | |
| 2553 } | |
| 2554 | |
| 2555 static stmt_ty | |
| 2556 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2557 { | |
| 2558 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2559 ['else' ':' suite] | |
| 2560 */ | |
| 2561 char *s; | |
| 2562 | |
| 2563 REQ(n, if_stmt); | |
| 2564 | |
| 2565 if (NCH(n) == 4) { | |
| 2566 expr_ty expression; | |
| 2567 asdl_seq *suite_seq; | |
| 2568 | |
| 2569 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2570 if (!expression) | |
| 2571 return NULL; | |
| 2572 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2573 if (!suite_seq) |
| 35742 | 2574 return NULL; |
| 2575 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2576 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2577 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2578 |
| 35742 | 2579 s = STR(CHILD(n, 4)); |
| 2580 /* s[2], the third character in the string, will be | |
| 2581 's' for el_s_e, or | |
| 2582 'i' for el_i_f | |
| 2583 */ | |
| 2584 if (s[2] == 's') { | |
| 2585 expr_ty expression; | |
| 2586 asdl_seq *seq1, *seq2; | |
| 2587 | |
| 2588 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2589 if (!expression) | |
| 2590 return NULL; | |
| 2591 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
|
2592 if (!seq1) |
| 35742 | 2593 return NULL; |
| 2594 seq2 = 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
|
2595 if (!seq2) |
| 35742 | 2596 return NULL; |
| 2597 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2598 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2599 } |
| 2600 else if (s[2] == 'i') { | |
| 2601 int i, n_elif, has_else = 0; | |
|
41206
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2602 expr_ty expression; |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2603 asdl_seq *suite_seq; |
| 35742 | 2604 asdl_seq *orelse = NULL; |
| 2605 n_elif = NCH(n) - 4; | |
| 2606 /* must reference the child n_elif+1 since 'else' token is third, | |
| 2607 not fourth, child from the end. */ | |
| 2608 if (TYPE(CHILD(n, (n_elif + 1))) == NAME | |
| 2609 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { | |
| 2610 has_else = 1; | |
| 2611 n_elif -= 3; | |
| 2612 } | |
| 2613 n_elif /= 4; | |
| 2614 | |
| 2615 if (has_else) { | |
|
41206
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2616 asdl_seq *suite_seq2; |
| 35742 | 2617 |
|
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
|
2618 orelse = asdl_seq_new(1, c->c_arena); |
| 35742 | 2619 if (!orelse) |
| 2620 return NULL; | |
| 2621 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2622 if (!expression) |
| 35742 | 2623 return NULL; |
|
41206
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2624 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2625 if (!suite_seq) |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2626 return NULL; |
|
41206
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2627 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2628 if (!suite_seq2) |
| 35742 | 2629 return NULL; |
| 2630 | |
|
41206
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2631 asdl_seq_SET(orelse, 0, If(expression, suite_seq, suite_seq2, |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2632 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
|
2633 c->c_arena)); |
| 35742 | 2634 /* the just-created orelse handled the last elif */ |
| 2635 n_elif--; | |
| 2636 } | |
| 2637 | |
| 2638 for (i = 0; i < n_elif; i++) { | |
| 2639 int off = 5 + (n_elif - i - 1) * 4; | |
|
37597
2b2e9c388fbb
low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
Anthony Baxter <anthonybaxter@gmail.com>
parents:
37453
diff
changeset
|
2640 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
2b2e9c388fbb
low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
Anthony Baxter <anthonybaxter@gmail.com>
parents:
37453
diff
changeset
|
2641 if (!newobj) |
| 35742 | 2642 return NULL; |
| 2643 expression = ast_for_expr(c, CHILD(n, off)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2644 if (!expression) |
| 35742 | 2645 return NULL; |
| 2646 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2647 if (!suite_seq) |
| 35742 | 2648 return NULL; |
| 2649 | |
|
37597
2b2e9c388fbb
low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
Anthony Baxter <anthonybaxter@gmail.com>
parents:
37453
diff
changeset
|
2650 asdl_seq_SET(newobj, 0, |
| 35742 | 2651 If(expression, suite_seq, orelse, |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2652 LINENO(CHILD(n, off)), CHILD(n, off)->n_col_offset, c->c_arena)); |
|
37597
2b2e9c388fbb
low-hanging fruit in Python/ - g++ still hates all the enum_kind declarations
Anthony Baxter <anthonybaxter@gmail.com>
parents:
37453
diff
changeset
|
2653 orelse = newobj; |
| 35742 | 2654 } |
|
41206
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2655 expression = ast_for_expr(c, CHILD(n, 1)); |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2656 if (!expression) |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2657 return NULL; |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2658 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2659 if (!suite_seq) |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2660 return NULL; |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2661 return If(expression, suite_seq, orelse, |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2662 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2663 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2664 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2665 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2666 "unexpected token in 'if' statement: %s", s); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2667 return NULL; |
| 35742 | 2668 } |
| 2669 | |
| 2670 static stmt_ty | |
| 2671 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2672 { | |
| 2673 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2674 REQ(n, while_stmt); | |
| 2675 | |
| 2676 if (NCH(n) == 4) { | |
| 2677 expr_ty expression; | |
| 2678 asdl_seq *suite_seq; | |
| 2679 | |
| 2680 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2681 if (!expression) | |
| 2682 return NULL; | |
| 2683 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2684 if (!suite_seq) |
| 35742 | 2685 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2686 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2687 } |
| 2688 else if (NCH(n) == 7) { | |
| 2689 expr_ty expression; | |
| 2690 asdl_seq *seq1, *seq2; | |
| 2691 | |
| 2692 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2693 if (!expression) | |
| 2694 return NULL; | |
| 2695 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2696 if (!seq1) |
| 35742 | 2697 return NULL; |
| 2698 seq2 = 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
|
2699 if (!seq2) |
| 35742 | 2700 return NULL; |
| 2701 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2702 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2703 } |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2704 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2705 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2706 "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
|
2707 NCH(n)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2708 return NULL; |
| 35742 | 2709 } |
| 2710 | |
| 2711 static stmt_ty | |
| 2712 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2713 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2714 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2715 expr_ty expression; |
| 2716 expr_ty target; | |
|
39067
7182c2775c1e
Bug #1520864: unpacking singleton tuples in for loop (for x, in) work again.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39038
diff
changeset
|
2717 const node *node_target; |
| 35742 | 2718 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2719 REQ(n, for_stmt); | |
| 2720 | |
| 2721 if (NCH(n) == 9) { | |
| 2722 seq = ast_for_suite(c, CHILD(n, 8)); | |
| 2723 if (!seq) | |
| 2724 return NULL; | |
| 2725 } | |
| 2726 | |
|
39067
7182c2775c1e
Bug #1520864: unpacking singleton tuples in for loop (for x, in) work again.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39038
diff
changeset
|
2727 node_target = CHILD(n, 1); |
|
7182c2775c1e
Bug #1520864: unpacking singleton tuples in for loop (for x, in) work again.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39038
diff
changeset
|
2728 _target = ast_for_exprlist(c, node_target, Store); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2729 if (!_target) |
| 35742 | 2730 return NULL; |
|
39067
7182c2775c1e
Bug #1520864: unpacking singleton tuples in for loop (for x, in) work again.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39038
diff
changeset
|
2731 /* Check the # of children rather than the length of _target, since |
|
7182c2775c1e
Bug #1520864: unpacking singleton tuples in for loop (for x, in) work again.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39038
diff
changeset
|
2732 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
7182c2775c1e
Bug #1520864: unpacking singleton tuples in for loop (for x, in) work again.
Neal Norwitz <nnorwitz@gmail.com>
parents:
39038
diff
changeset
|
2733 if (NCH(node_target) == 1) |
|
37604
c732f66c913f
Convert 0 to their respective enum types. Convert
Martin v. Löwis <martin@v.loewis.de>
parents:
37597
diff
changeset
|
2734 target = (expr_ty)asdl_seq_GET(_target, 0); |
| 35742 | 2735 else |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2736 target = Tuple(_target, Store, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2737 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2738 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2739 if (!expression) |
| 35742 | 2740 return NULL; |
| 2741 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2742 if (!suite_seq) |
| 35742 | 2743 return NULL; |
| 2744 | |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2745 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2746 c->c_arena); |
| 35742 | 2747 } |
| 2748 | |
| 2749 static excepthandler_ty | |
| 2750 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2751 { | |
| 2752 /* except_clause: 'except' [test [',' test]] */ | |
| 2753 REQ(exc, except_clause); | |
| 2754 REQ(body, suite); | |
| 2755 | |
| 2756 if (NCH(exc) == 1) { | |
| 2757 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2758 if (!suite_seq) | |
| 2759 return NULL; | |
| 2760 | |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2761 return excepthandler(NULL, NULL, suite_seq, LINENO(exc), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2762 exc->n_col_offset, c->c_arena); |
| 35742 | 2763 } |
| 2764 else if (NCH(exc) == 2) { | |
| 2765 expr_ty expression; | |
| 2766 asdl_seq *suite_seq; | |
| 2767 | |
| 2768 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2769 if (!expression) | |
| 2770 return NULL; | |
| 2771 suite_seq = ast_for_suite(c, body); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2772 if (!suite_seq) |
| 35742 | 2773 return NULL; |
| 2774 | |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2775 return excepthandler(expression, NULL, suite_seq, LINENO(exc), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2776 exc->n_col_offset, c->c_arena); |
| 35742 | 2777 } |
| 2778 else if (NCH(exc) == 4) { | |
| 2779 asdl_seq *suite_seq; | |
| 2780 expr_ty expression; | |
| 2781 expr_ty e = ast_for_expr(c, CHILD(exc, 3)); | |
| 2782 if (!e) | |
| 2783 return NULL; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2784 if (!set_context(e, Store, CHILD(exc, 3))) |
| 35742 | 2785 return NULL; |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2786 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2787 if (!expression) |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2788 return NULL; |
| 35742 | 2789 suite_seq = ast_for_suite(c, body); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2790 if (!suite_seq) |
| 35742 | 2791 return NULL; |
| 2792 | |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2793 return excepthandler(expression, e, suite_seq, LINENO(exc), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2794 exc->n_col_offset, c->c_arena); |
| 35742 | 2795 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2796 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2797 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2798 "wrong number of children for 'except' clause: %d", |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2799 NCH(exc)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2800 return NULL; |
| 35742 | 2801 } |
| 2802 | |
| 2803 static stmt_ty | |
| 2804 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2805 { | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2806 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
|
2807 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
|
2808 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
|
2809 |
| 35742 | 2810 REQ(n, try_stmt); |
| 2811 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2812 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
|
2813 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
|
2814 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2815 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2816 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
|
2817 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
|
2818 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
|
2819 /* 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
|
2820 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
|
2821 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
|
2822 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
|
2823 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
|
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 n_except--; |
|
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 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
|
2829 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
|
2830 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2831 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2832 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2833 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2834 /* we can assume it's an "else", |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2835 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
|
2836 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
|
2837 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
|
2838 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2839 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2840 } |
| 35742 | 2841 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2842 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
|
2843 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2844 return NULL; |
| 2845 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2846 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2847 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
|
2848 int i; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2849 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
|
2850 /* 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
|
2851 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
|
2852 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
|
2853 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2854 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2855 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
|
2856 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
|
2857 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
|
2858 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2859 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2860 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
|
2861 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2862 |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2863 except_st = TryExcept(body, handlers, orelse, LINENO(n), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2864 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
|
2865 if (!finally) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2866 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
|
2867 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2868 /* 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
|
2869 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
|
2870 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
|
2871 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
|
2872 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2873 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
|
2874 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2875 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2876 /* 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
|
2877 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
|
2878 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2879 } |
| 2880 | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2881 static expr_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2882 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
|
2883 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2884 REQ(n, with_var); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2885 if (strcmp(STR(CHILD(n, 0)), "as") != 0) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2886 ast_error(n, "expected \"with [expr] as [var]\""); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2887 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2888 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2889 return ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2890 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2891 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2892 /* with_stmt: 'with' test [ with_var ] ':' suite */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2893 static stmt_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2894 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
|
2895 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2896 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2897 int suite_index = 3; /* skip 'with', test, and ':' */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2898 asdl_seq *suite_seq; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2899 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2900 assert(TYPE(n) == with_stmt); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2901 context_expr = ast_for_expr(c, CHILD(n, 1)); |
|
41206
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2902 if (!context_expr) |
|
d835809f45ec
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Collin Winter <collinw@gmail.com>
parents:
40288
diff
changeset
|
2903 return NULL; |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2904 if (TYPE(CHILD(n, 2)) == with_var) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2905 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
|
2906 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2907 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2908 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2909 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2910 if (!set_context(optional_vars, Store, n)) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2911 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2912 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2913 suite_index = 4; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2914 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2915 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2916 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
|
2917 if (!suite_seq) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2918 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2919 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2920 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
|
2921 n->n_col_offset, c->c_arena); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2922 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2923 |
| 35742 | 2924 static stmt_ty |
| 2925 ast_for_classdef(struct compiling *c, const node *n) | |
| 2926 { | |
| 2927 /* classdef: 'class' NAME ['(' testlist ')'] ':' suite */ | |
| 2928 asdl_seq *bases, *s; | |
| 2929 | |
| 2930 REQ(n, classdef); | |
| 2931 | |
| 2932 if (!strcmp(STR(CHILD(n, 1)), "None")) { | |
| 2933 ast_error(n, "assignment to None"); | |
| 2934 return NULL; | |
| 2935 } | |
| 2936 | |
| 2937 if (NCH(n) == 4) { | |
| 2938 s = ast_for_suite(c, CHILD(n, 3)); | |
| 2939 if (!s) | |
| 2940 return NULL; | |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2941 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, s, LINENO(n), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2942 n->n_col_offset, c->c_arena); |
| 35742 | 2943 } |
| 2944 /* check for empty base list */ | |
| 2945 if (TYPE(CHILD(n,3)) == RPAR) { | |
| 2946 s = ast_for_suite(c, CHILD(n,5)); | |
| 2947 if (!s) | |
| 2948 return NULL; | |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2949 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, s, LINENO(n), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2950 n->n_col_offset, c->c_arena); |
| 35742 | 2951 } |
| 2952 | |
| 2953 /* 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
|
2954 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
|
2955 if (!bases) |
| 35742 | 2956 return NULL; |
| 2957 | |
| 2958 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
|
2959 if (!s) |
| 35742 | 2960 return NULL; |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2961 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), bases, s, LINENO(n), |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
2962 n->n_col_offset, c->c_arena); |
| 35742 | 2963 } |
| 2964 | |
| 2965 static stmt_ty | |
| 2966 ast_for_stmt(struct compiling *c, const node *n) | |
| 2967 { | |
| 2968 if (TYPE(n) == stmt) { | |
| 2969 assert(NCH(n) == 1); | |
| 2970 n = CHILD(n, 0); | |
| 2971 } | |
| 2972 if (TYPE(n) == simple_stmt) { | |
| 2973 assert(num_stmts(n) == 1); | |
| 2974 n = CHILD(n, 0); | |
| 2975 } | |
| 2976 if (TYPE(n) == small_stmt) { | |
| 2977 REQ(n, small_stmt); | |
| 2978 n = CHILD(n, 0); | |
| 2979 /* small_stmt: expr_stmt | print_stmt | del_stmt | pass_stmt | |
| 2980 | flow_stmt | import_stmt | global_stmt | exec_stmt | |
| 2981 | assert_stmt | |
| 2982 */ | |
| 2983 switch (TYPE(n)) { | |
| 2984 case expr_stmt: | |
| 2985 return ast_for_expr_stmt(c, n); | |
| 2986 case print_stmt: | |
| 2987 return ast_for_print_stmt(c, n); | |
| 2988 case del_stmt: | |
| 2989 return ast_for_del_stmt(c, n); | |
| 2990 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
|
2991 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2992 case flow_stmt: |
| 2993 return ast_for_flow_stmt(c, n); | |
| 2994 case import_stmt: | |
| 2995 return ast_for_import_stmt(c, n); | |
| 2996 case global_stmt: | |
| 2997 return ast_for_global_stmt(c, n); | |
| 2998 case exec_stmt: | |
| 2999 return ast_for_exec_stmt(c, n); | |
| 3000 case assert_stmt: | |
| 3001 return ast_for_assert_stmt(c, n); | |
| 3002 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3003 PyErr_Format(PyExc_SystemError, |
| 35742 | 3004 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3005 TYPE(n), NCH(n)); | |
| 3006 return NULL; | |
| 3007 } | |
| 3008 } | |
| 3009 else { | |
| 3010 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
| 3011 | funcdef | classdef | |
| 3012 */ | |
| 3013 node *ch = CHILD(n, 0); | |
| 3014 REQ(n, compound_stmt); | |
| 3015 switch (TYPE(ch)) { | |
| 3016 case if_stmt: | |
| 3017 return ast_for_if_stmt(c, ch); | |
| 3018 case while_stmt: | |
| 3019 return ast_for_while_stmt(c, ch); | |
| 3020 case for_stmt: | |
| 3021 return ast_for_for_stmt(c, ch); | |
| 3022 case try_stmt: | |
| 3023 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3024 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3025 return ast_for_with_stmt(c, ch); |
| 35742 | 3026 case funcdef: |
| 3027 return ast_for_funcdef(c, ch); | |
| 3028 case classdef: | |
| 3029 return ast_for_classdef(c, ch); | |
| 3030 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3031 PyErr_Format(PyExc_SystemError, |
| 35742 | 3032 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3033 TYPE(n), NCH(n)); | |
| 3034 return NULL; | |
| 3035 } | |
| 3036 } | |
| 3037 } | |
| 3038 | |
| 3039 static PyObject * | |
| 3040 parsenumber(const char *s) | |
| 3041 { | |
| 3042 const char *end; | |
| 3043 long x; | |
| 3044 double dx; | |
| 3045 #ifndef WITHOUT_COMPLEX | |
| 3046 Py_complex c; | |
| 3047 int imflag; | |
| 3048 #endif | |
| 3049 | |
| 3050 errno = 0; | |
| 3051 end = s + strlen(s) - 1; | |
| 3052 #ifndef WITHOUT_COMPLEX | |
| 3053 imflag = *end == 'j' || *end == 'J'; | |
| 3054 #endif | |
| 3055 if (*end == 'l' || *end == 'L') | |
| 3056 return PyLong_FromString((char *)s, (char **)0, 0); | |
| 3057 if (s[0] == '0') { | |
| 3058 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); | |
| 3059 if (x < 0 && errno == 0) { | |
| 3060 return PyLong_FromString((char *)s, | |
| 3061 (char **)0, | |
| 3062 0); | |
| 3063 } | |
| 3064 } | |
| 3065 else | |
| 3066 x = PyOS_strtol((char *)s, (char **)&end, 0); | |
| 3067 if (*end == '\0') { | |
| 3068 if (errno != 0) | |
| 3069 return PyLong_FromString((char *)s, (char **)0, 0); | |
| 3070 return PyInt_FromLong(x); | |
| 3071 } | |
| 3072 /* XXX Huge floats may silently fail */ | |
| 3073 #ifndef WITHOUT_COMPLEX | |
| 3074 if (imflag) { | |
| 3075 c.real = 0.; | |
| 3076 PyFPE_START_PROTECT("atof", return 0) | |
| 36155 | 3077 c.imag = PyOS_ascii_atof(s); |
| 35742 | 3078 PyFPE_END_PROTECT(c) |
| 3079 return PyComplex_FromCComplex(c); | |
| 3080 } | |
| 3081 else | |
| 3082 #endif | |
| 3083 { | |
| 3084 PyFPE_START_PROTECT("atof", return 0) | |
| 36155 | 3085 dx = PyOS_ascii_atof(s); |
| 35742 | 3086 PyFPE_END_PROTECT(dx) |
| 3087 return PyFloat_FromDouble(dx); | |
| 3088 } | |
| 3089 } | |
| 3090 | |
| 3091 static PyObject * | |
| 3092 decode_utf8(const char **sPtr, const char *end, char* encoding) | |
| 3093 { | |
| 3094 #ifndef Py_USING_UNICODE | |
| 3095 Py_FatalError("decode_utf8 should not be called in this build."); | |
| 3096 return NULL; | |
| 3097 #else | |
| 3098 PyObject *u, *v; | |
| 3099 char *s, *t; | |
| 3100 t = s = (char *)*sPtr; | |
| 3101 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ | |
| 3102 while (s < end && (*s & 0x80)) s++; | |
| 3103 *sPtr = s; | |
| 3104 u = PyUnicode_DecodeUTF8(t, s - t, NULL); | |
| 3105 if (u == NULL) | |
| 3106 return NULL; | |
| 3107 v = PyUnicode_AsEncodedString(u, encoding, NULL); | |
| 3108 Py_DECREF(u); | |
| 3109 return v; | |
| 3110 #endif | |
| 3111 } | |
| 3112 | |
| 3113 static PyObject * | |
| 3114 decode_unicode(const char *s, size_t len, int rawmode, const char *encoding) | |
| 3115 { | |
| 3116 PyObject *v, *u; | |
| 3117 char *buf; | |
| 3118 char *p; | |
| 3119 const char *end; | |
| 3120 if (encoding == NULL) { | |
| 3121 buf = (char *)s; | |
| 3122 u = NULL; | |
| 3123 } else if (strcmp(encoding, "iso-8859-1") == 0) { | |
| 3124 buf = (char *)s; | |
| 3125 u = NULL; | |
| 3126 } else { | |
| 3127 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ | |
| 3128 u = PyString_FromStringAndSize((char *)NULL, len * 4); | |
| 3129 if (u == NULL) | |
| 3130 return NULL; | |
| 3131 p = buf = PyString_AsString(u); | |
| 3132 end = s + len; | |
| 3133 while (s < end) { | |
| 3134 if (*s == '\\') { | |
| 3135 *p++ = *s++; | |
| 3136 if (*s & 0x80) { | |
| 3137 strcpy(p, "u005c"); | |
| 3138 p += 5; | |
| 3139 } | |
| 3140 } | |
| 3141 if (*s & 0x80) { /* XXX inefficient */ | |
| 3142 PyObject *w; | |
| 3143 char *r; | |
|
37920
ce5585afc20f
Fix more ssize_t issues.
Martin v. Löwis <martin@v.loewis.de>
parents:
37685
diff
changeset
|
3144 Py_ssize_t rn, i; |
| 35742 | 3145 w = decode_utf8(&s, end, "utf-16-be"); |
| 3146 if (w == NULL) { | |
| 3147 Py_DECREF(u); | |
| 3148 return NULL; | |
| 3149 } | |
| 3150 r = PyString_AsString(w); | |
| 3151 rn = PyString_Size(w); | |
| 3152 assert(rn % 2 == 0); | |
| 3153 for (i = 0; i < rn; i += 2) { | |
| 3154 sprintf(p, "\\u%02x%02x", | |
| 3155 r[i + 0] & 0xFF, | |
| 3156 r[i + 1] & 0xFF); | |
| 3157 p += 6; | |
| 3158 } | |
| 3159 Py_DECREF(w); | |
| 3160 } else { | |
| 3161 *p++ = *s++; | |
| 3162 } | |
| 3163 } | |
| 3164 len = p - buf; | |
| 3165 s = buf; | |
| 3166 } | |
| 3167 if (rawmode) | |
| 3168 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); | |
| 3169 else | |
| 3170 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); | |
| 3171 Py_XDECREF(u); | |
| 3172 return v; | |
| 3173 } | |
| 3174 | |
| 3175 /* s is a Python string literal, including the bracketing quote characters, | |
| 3176 * and r &/or u prefixes (if any), and embedded escape sequences (if any). | |
| 3177 * parsestr parses it, and returns the decoded Python string object. | |
| 3178 */ | |
| 3179 static PyObject * | |
| 3180 parsestr(const char *s, const char *encoding) | |
| 3181 { | |
| 3182 size_t len; | |
|
36090
8cb686dd6e64
Fix SF bug #1072182, problems with signed characters.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36072
diff
changeset
|
3183 int quote = Py_CHARMASK(*s); |
| 35742 | 3184 int rawmode = 0; |
| 3185 int need_encoding; | |
| 3186 int unicode = 0; | |
| 3187 | |
| 3188 if (isalpha(quote) || quote == '_') { | |
| 3189 if (quote == 'u' || quote == 'U') { | |
| 3190 quote = *++s; | |
| 3191 unicode = 1; | |
| 3192 } | |
| 3193 if (quote == 'r' || quote == 'R') { | |
| 3194 quote = *++s; | |
| 3195 rawmode = 1; | |
| 3196 } | |
| 3197 } | |
| 3198 if (quote != '\'' && quote != '\"') { | |
| 3199 PyErr_BadInternalCall(); | |
| 3200 return NULL; | |
| 3201 } | |
| 3202 s++; | |
| 3203 len = strlen(s); | |
| 3204 if (len > INT_MAX) { | |
| 3205 PyErr_SetString(PyExc_OverflowError, | |
| 3206 "string to parse is too long"); | |
| 3207 return NULL; | |
| 3208 } | |
| 3209 if (s[--len] != quote) { | |
| 3210 PyErr_BadInternalCall(); | |
| 3211 return NULL; | |
| 3212 } | |
| 3213 if (len >= 4 && s[0] == quote && s[1] == quote) { | |
| 3214 s += 2; | |
| 3215 len -= 2; | |
| 3216 if (s[--len] != quote || s[--len] != quote) { | |
| 3217 PyErr_BadInternalCall(); | |
| 3218 return NULL; | |
| 3219 } | |
| 3220 } | |
| 3221 #ifdef Py_USING_UNICODE | |
| 3222 if (unicode || Py_UnicodeFlag) { | |
| 3223 return decode_unicode(s, len, rawmode, encoding); | |
| 3224 } | |
| 3225 #endif | |
| 3226 need_encoding = (encoding != NULL && | |
| 3227 strcmp(encoding, "utf-8") != 0 && | |
| 3228 strcmp(encoding, "iso-8859-1") != 0); | |
| 3229 if (rawmode || strchr(s, '\\') == NULL) { | |
| 3230 if (need_encoding) { | |
| 3231 #ifndef Py_USING_UNICODE | |
| 3232 /* This should not happen - we never see any other | |
| 3233 encoding. */ | |
|
37453
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
3234 Py_FatalError( |
|
16a64e394602
Add lineno, col_offset to excephandler to enable future fix for
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
37235
diff
changeset
|
3235 "cannot deal with encodings in this build."); |
| 35742 | 3236 #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
|
3237 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
| 35742 | 3238 if (u == NULL) |
| 3239 return NULL; | |
| 3240 v = PyUnicode_AsEncodedString(u, encoding, NULL); | |
| 3241 Py_DECREF(u); | |
| 3242 return v; | |
| 3243 #endif | |
| 3244 } else { | |
| 3245 return PyString_FromStringAndSize(s, len); | |
| 3246 } | |
| 3247 } | |
| 3248 | |
|
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
|
3249 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
|
3250 need_encoding ? encoding : NULL); |
| 35742 | 3251 } |
| 3252 | |
| 3253 /* Build a Python string object out of a STRING atom. This takes care of | |
| 3254 * compile-time literal catenation, calling parsestr() on each piece, and | |
| 3255 * pasting the intermediate results together. | |
| 3256 */ | |
| 3257 static PyObject * | |
| 3258 parsestrplus(struct compiling *c, const node *n) | |
| 3259 { | |
| 3260 PyObject *v; | |
| 3261 int i; | |
| 3262 REQ(CHILD(n, 0), STRING); | |
| 3263 if ((v = parsestr(STR(CHILD(n, 0)), c->c_encoding)) != NULL) { | |
| 3264 /* String literal concatenation */ | |
| 3265 for (i = 1; i < NCH(n); i++) { | |
| 3266 PyObject *s; | |
| 3267 s = parsestr(STR(CHILD(n, i)), c->c_encoding); | |
| 3268 if (s == NULL) | |
| 3269 goto onError; | |
| 3270 if (PyString_Check(v) && PyString_Check(s)) { | |
| 3271 PyString_ConcatAndDel(&v, s); | |
| 3272 if (v == NULL) | |
| 3273 goto onError; | |
| 3274 } | |
| 3275 #ifdef Py_USING_UNICODE | |
| 3276 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
|
3277 PyObject *temp = PyUnicode_Concat(v, s); |
| 35742 | 3278 Py_DECREF(s); |
| 3279 Py_DECREF(v); | |
| 3280 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
|
3281 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
|
3282 goto onError; |
| 35742 | 3283 } |
| 3284 #endif | |
| 3285 } | |
| 3286 } | |
| 3287 return v; | |
| 3288 | |
| 3289 onError: | |
| 3290 Py_XDECREF(v); | |
| 3291 return NULL; | |
| 3292 } |