Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 42552:ac192f89c109
Kill execfile(), use exec() instead
| author | Neal Norwitz <nnorwitz@gmail.com> |
|---|---|
| date | Sun, 12 Aug 2007 00:43:29 +0000 |
| parents | 65f1d419f631 |
| children | 20477cbfd996 |
| rev | line source |
|---|---|
| 35742 | 1 /* |
| 2 * This file includes functions to transform a concrete syntax tree (CST) to | |
| 3 * an abstract syntax tree (AST). The main function is PyAST_FromNode(). | |
| 4 * | |
| 5 */ | |
| 6 #include "Python.h" | |
| 7 #include "Python-ast.h" | |
| 8 #include "grammar.h" | |
| 9 #include "node.h" | |
|
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parents:
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10 #include "pyarena.h" |
| 35742 | 11 #include "ast.h" |
| 12 #include "token.h" | |
| 13 #include "parsetok.h" | |
| 14 #include "graminit.h" | |
| 15 | |
| 16 #include <assert.h> | |
| 17 | |
| 18 /* Data structure used internally */ | |
| 19 struct compiling { | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
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20 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
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21 PyArena *c_arena; /* arena for allocating memeory */ |
| 35742 | 22 }; |
| 23 | |
| 24 static asdl_seq *seq_for_testlist(struct compiling *, const node *); | |
| 25 static expr_ty ast_for_expr(struct compiling *, const node *); | |
| 26 static stmt_ty ast_for_stmt(struct compiling *, const node *); | |
| 27 static asdl_seq *ast_for_suite(struct compiling *, const node *); | |
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28 static asdl_seq *ast_for_exprlist(struct compiling *, const node *, |
|
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29 expr_context_ty); |
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30 static expr_ty ast_for_testlist(struct compiling *, const node *); |
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31 static stmt_ty ast_for_classdef(struct compiling *, const node *, asdl_seq *); |
| 35742 | 32 |
| 33 /* Note different signature for ast_for_call */ | |
| 34 static expr_ty ast_for_call(struct compiling *, const node *, expr_ty); | |
| 35 | |
| 36 static PyObject *parsenumber(const char *); | |
| 40894 | 37 static PyObject *parsestr(const node *n, const char *encoding, int *bytesmode); |
| 38 static PyObject *parsestrplus(struct compiling *, const node *n, | |
| 39 int *bytesmode); | |
| 35742 | 40 |
| 41 #ifndef LINENO | |
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42 #define LINENO(n) ((n)->n_lineno) |
| 35742 | 43 #endif |
| 44 | |
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45 #define COMP_GENEXP 0 |
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46 #define COMP_LISTCOMP 1 |
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47 #define COMP_SETCOMP 2 |
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48 |
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parents:
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49 static identifier |
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
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50 new_identifier(const char* n, PyArena *arena) { |
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51 PyObject* id = PyUnicode_DecodeUTF8(n, strlen(n), NULL); |
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52 PyUnicode_InternInPlace(&id); |
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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53 PyArena_AddPyObject(arena, id); |
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parents:
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54 return id; |
| 35742 | 55 } |
| 56 | |
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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57 #define NEW_IDENTIFIER(n) new_identifier(STR(n), c->c_arena) |
| 35742 | 58 |
| 59 /* This routine provides an invalid object for the syntax error. | |
| 60 The outermost routine must unpack this error and create the | |
| 61 proper object. We do this so that we don't have to pass | |
| 62 the filename to everything function. | |
| 63 | |
| 64 XXX Maybe we should just pass the filename... | |
| 65 */ | |
| 66 | |
| 67 static int | |
| 68 ast_error(const node *n, const char *errstr) | |
| 69 { | |
| 70 PyObject *u = Py_BuildValue("zi", errstr, LINENO(n)); | |
| 71 if (!u) | |
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72 return 0; |
| 35742 | 73 PyErr_SetObject(PyExc_SyntaxError, u); |
| 74 Py_DECREF(u); | |
| 75 return 0; | |
| 76 } | |
| 77 | |
| 78 static void | |
| 79 ast_error_finish(const char *filename) | |
| 80 { | |
| 81 PyObject *type, *value, *tback, *errstr, *loc, *tmp; | |
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82 long lineno; |
| 35742 | 83 |
| 84 assert(PyErr_Occurred()); | |
| 85 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
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86 return; |
| 35742 | 87 |
| 88 PyErr_Fetch(&type, &value, &tback); | |
| 89 errstr = PyTuple_GetItem(value, 0); | |
| 90 if (!errstr) | |
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91 return; |
| 35742 | 92 Py_INCREF(errstr); |
| 93 lineno = PyInt_AsLong(PyTuple_GetItem(value, 1)); | |
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94 if (lineno == -1) { |
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95 Py_DECREF(errstr); |
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96 return; |
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97 } |
| 35742 | 98 Py_DECREF(value); |
| 99 | |
| 100 loc = PyErr_ProgramText(filename, lineno); | |
| 101 if (!loc) { | |
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102 Py_INCREF(Py_None); |
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103 loc = Py_None; |
| 35742 | 104 } |
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105 tmp = Py_BuildValue("(zlOO)", filename, lineno, Py_None, loc); |
| 35742 | 106 Py_DECREF(loc); |
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107 if (!tmp) { |
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108 Py_DECREF(errstr); |
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109 return; |
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110 } |
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111 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 112 Py_DECREF(errstr); |
| 113 Py_DECREF(tmp); | |
| 114 if (!value) | |
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115 return; |
| 35742 | 116 PyErr_Restore(type, value, tback); |
| 117 } | |
| 118 | |
| 119 /* num_stmts() returns number of contained statements. | |
| 120 | |
| 121 Use this routine to determine how big a sequence is needed for | |
| 122 the statements in a parse tree. Its raison d'etre is this bit of | |
| 123 grammar: | |
| 124 | |
| 125 stmt: simple_stmt | compound_stmt | |
| 126 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 127 | |
| 128 A simple_stmt can contain multiple small_stmt elements joined | |
| 129 by semicolons. If the arg is a simple_stmt, the number of | |
| 130 small_stmt elements is returned. | |
| 131 */ | |
| 132 | |
| 133 static int | |
| 134 num_stmts(const node *n) | |
| 135 { | |
| 136 int i, l; | |
| 137 node *ch; | |
| 138 | |
| 139 switch (TYPE(n)) { | |
| 140 case single_input: | |
| 141 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 142 return 0; | |
| 143 else | |
| 144 return num_stmts(CHILD(n, 0)); | |
| 145 case file_input: | |
| 146 l = 0; | |
| 147 for (i = 0; i < NCH(n); i++) { | |
| 148 ch = CHILD(n, i); | |
| 149 if (TYPE(ch) == stmt) | |
| 150 l += num_stmts(ch); | |
| 151 } | |
| 152 return l; | |
| 153 case stmt: | |
| 154 return num_stmts(CHILD(n, 0)); | |
| 155 case compound_stmt: | |
| 156 return 1; | |
| 157 case simple_stmt: | |
| 158 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 159 case suite: | |
| 160 if (NCH(n) == 1) | |
| 161 return num_stmts(CHILD(n, 0)); | |
| 162 else { | |
| 163 l = 0; | |
| 164 for (i = 2; i < (NCH(n) - 1); i++) | |
| 165 l += num_stmts(CHILD(n, i)); | |
| 166 return l; | |
| 167 } | |
| 168 default: { | |
| 169 char buf[128]; | |
| 170 | |
| 171 sprintf(buf, "Non-statement found: %d %d\n", | |
| 172 TYPE(n), NCH(n)); | |
| 173 Py_FatalError(buf); | |
| 174 } | |
| 175 } | |
| 176 assert(0); | |
| 177 return 0; | |
| 178 } | |
| 179 | |
| 180 /* Transform the CST rooted at node * to the appropriate AST | |
| 181 */ | |
| 182 | |
| 183 mod_ty | |
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parents:
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184 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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parents:
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185 PyArena *arena) |
| 35742 | 186 { |
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187 int i, j, k, num; |
| 35742 | 188 asdl_seq *stmts = NULL; |
| 189 stmt_ty s; | |
| 190 node *ch; | |
| 191 struct compiling c; | |
| 192 | |
| 193 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
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parents:
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194 c.c_encoding = "utf-8"; |
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195 if (TYPE(n) == encoding_decl) { |
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196 #if 0 |
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197 ast_error(n, "encoding declaration in Unicode string"); |
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198 goto error; |
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199 #endif |
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200 n = CHILD(n, 0); |
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201 } |
| 35742 | 202 } else if (TYPE(n) == encoding_decl) { |
| 203 c.c_encoding = STR(n); | |
| 204 n = CHILD(n, 0); | |
| 205 } else { | |
| 42403 | 206 /* PEP 3120 */ |
| 207 c.c_encoding = "utf-8"; | |
| 35742 | 208 } |
|
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209 c.c_arena = arena; |
| 35742 | 210 |
|
36718
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Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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changeset
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211 k = 0; |
| 35742 | 212 switch (TYPE(n)) { |
| 213 case file_input: | |
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36065
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
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214 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 215 if (!stmts) |
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216 return NULL; |
| 35742 | 217 for (i = 0; i < NCH(n) - 1; i++) { |
| 218 ch = CHILD(n, i); | |
| 219 if (TYPE(ch) == NEWLINE) | |
| 220 continue; | |
| 221 REQ(ch, stmt); | |
| 222 num = num_stmts(ch); | |
| 223 if (num == 1) { | |
| 224 s = ast_for_stmt(&c, ch); | |
| 225 if (!s) | |
| 226 goto error; | |
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227 asdl_seq_SET(stmts, k++, s); |
| 35742 | 228 } |
| 229 else { | |
| 230 ch = CHILD(ch, 0); | |
| 231 REQ(ch, simple_stmt); | |
| 232 for (j = 0; j < num; j++) { | |
| 233 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 234 if (!s) | |
| 235 goto error; | |
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236 asdl_seq_SET(stmts, k++, s); |
| 35742 | 237 } |
| 238 } | |
| 239 } | |
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240 return Module(stmts, arena); |
| 35742 | 241 case eval_input: { |
| 242 expr_ty testlist_ast; | |
| 243 | |
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244 /* XXX Why not comp_for here? */ |
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245 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 246 if (!testlist_ast) |
| 247 goto error; | |
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248 return Expression(testlist_ast, arena); |
| 35742 | 249 } |
| 250 case single_input: | |
| 251 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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parents:
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changeset
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252 stmts = asdl_seq_new(1, arena); |
| 35742 | 253 if (!stmts) |
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254 goto error; |
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255 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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256 arena)); |
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257 if (!asdl_seq_GET(stmts, 0)) |
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258 goto error; |
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259 return Interactive(stmts, arena); |
| 35742 | 260 } |
| 261 else { | |
| 262 n = CHILD(n, 0); | |
| 263 num = num_stmts(n); | |
|
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
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changeset
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264 stmts = asdl_seq_new(num, arena); |
| 35742 | 265 if (!stmts) |
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266 goto error; |
| 35742 | 267 if (num == 1) { |
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268 s = ast_for_stmt(&c, n); |
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269 if (!s) |
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270 goto error; |
| 35742 | 271 asdl_seq_SET(stmts, 0, s); |
| 272 } | |
| 273 else { | |
| 274 /* Only a simple_stmt can contain multiple statements. */ | |
| 275 REQ(n, simple_stmt); | |
| 276 for (i = 0; i < NCH(n); i += 2) { | |
| 277 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 278 break; | |
| 279 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 280 if (!s) | |
| 281 goto error; | |
| 282 asdl_seq_SET(stmts, i / 2, s); | |
| 283 } | |
| 284 } | |
| 285 | |
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286 return Interactive(stmts, arena); |
| 35742 | 287 } |
| 288 default: | |
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289 PyErr_Format(PyExc_SystemError, |
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290 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 291 goto error; |
| 292 } | |
| 293 error: | |
| 294 ast_error_finish(filename); | |
| 295 return NULL; | |
| 296 } | |
| 297 | |
| 298 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 299 */ | |
| 300 | |
| 301 static operator_ty | |
| 302 get_operator(const node *n) | |
| 303 { | |
| 304 switch (TYPE(n)) { | |
| 305 case VBAR: | |
| 306 return BitOr; | |
| 307 case CIRCUMFLEX: | |
| 308 return BitXor; | |
| 309 case AMPER: | |
| 310 return BitAnd; | |
| 311 case LEFTSHIFT: | |
| 312 return LShift; | |
| 313 case RIGHTSHIFT: | |
| 314 return RShift; | |
| 315 case PLUS: | |
| 316 return Add; | |
| 317 case MINUS: | |
| 318 return Sub; | |
| 319 case STAR: | |
| 320 return Mult; | |
| 321 case SLASH: | |
| 322 return Div; | |
| 323 case DOUBLESLASH: | |
| 324 return FloorDiv; | |
| 325 case PERCENT: | |
| 326 return Mod; | |
| 327 default: | |
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328 return (operator_ty)0; |
| 35742 | 329 } |
| 330 } | |
| 331 | |
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332 static const char* FORBIDDEN[] = { |
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333 "None", |
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334 "True", |
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335 "False", |
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336 NULL, |
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337 }; |
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338 |
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339 static int |
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340 forbidden_name(expr_ty e, const node *n) |
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341 { |
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342 const char **p; |
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343 assert(PyUnicode_Check(e->v.Name.id)); |
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344 for (p = FORBIDDEN; *p; p++) { |
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345 if (PyUnicode_CompareWithASCIIString(e->v.Name.id, *p) == 0) { |
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346 ast_error(n, "assignment to keyword"); |
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347 return 1; |
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348 } |
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349 } |
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350 return 0; |
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351 } |
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352 |
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353 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 354 |
| 355 Only sets context for expr kinds that "can appear in assignment context" | |
| 356 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 357 an appropriate syntax error and returns false. | |
| 358 */ | |
| 359 | |
| 360 static int | |
| 361 set_context(expr_ty e, expr_context_ty ctx, const node *n) | |
| 362 { | |
| 363 asdl_seq *s = NULL; | |
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364 /* If a particular expression type can't be used for assign / delete, |
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365 set expr_name to its name and an error message will be generated. |
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366 */ |
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367 const char* expr_name = NULL; |
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368 |
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369 /* The ast defines augmented store and load contexts, but the |
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370 implementation here doesn't actually use them. The code may be |
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371 a little more complex than necessary as a result. It also means |
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372 that expressions in an augmented assignment have a Store context. |
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373 Consider restructuring so that augmented assignment uses |
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374 set_context(), too. |
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375 */ |
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376 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 377 |
| 378 switch (e->kind) { | |
| 379 case Attribute_kind: | |
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380 e->v.Attribute.ctx = ctx; |
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381 break; |
| 35742 | 382 case Subscript_kind: |
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383 e->v.Subscript.ctx = ctx; |
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384 break; |
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385 case Starred_kind: |
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386 e->v.Starred.ctx = ctx; |
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387 if (!set_context(e->v.Starred.value, ctx, n)) |
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388 return 0; |
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389 break; |
| 35742 | 390 case Name_kind: |
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391 if (ctx == Store) { |
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392 if (forbidden_name(e, n)) |
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393 return 0; /* forbidden_name() calls ast_error() */ |
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394 } |
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395 e->v.Name.ctx = ctx; |
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396 break; |
| 35742 | 397 case List_kind: |
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398 e->v.List.ctx = ctx; |
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399 s = e->v.List.elts; |
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400 break; |
| 35742 | 401 case Tuple_kind: |
| 402 if (asdl_seq_LEN(e->v.Tuple.elts) == 0) | |
| 403 return ast_error(n, "can't assign to ()"); | |
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404 e->v.Tuple.ctx = ctx; |
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405 s = e->v.Tuple.elts; |
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406 break; |
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407 case Lambda_kind: |
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408 expr_name = "lambda"; |
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409 break; |
| 35742 | 410 case Call_kind: |
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411 expr_name = "function call"; |
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412 break; |
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413 case BoolOp_kind: |
| 35742 | 414 case BinOp_kind: |
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415 case UnaryOp_kind: |
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416 expr_name = "operator"; |
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417 break; |
| 35742 | 418 case GeneratorExp_kind: |
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419 expr_name = "generator expression"; |
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420 break; |
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421 case Yield_kind: |
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422 expr_name = "yield expression"; |
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423 break; |
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424 case ListComp_kind: |
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425 expr_name = "list comprehension"; |
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426 break; |
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427 case SetComp_kind: |
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428 expr_name = "set comprehension"; |
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429 break; |
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430 case DictComp_kind: |
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431 expr_name = "dict comprehension"; |
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432 break; |
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433 case Dict_kind: |
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434 case Set_kind: |
| 35742 | 435 case Num_kind: |
| 436 case Str_kind: | |
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437 expr_name = "literal"; |
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438 break; |
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439 case Ellipsis_kind: |
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440 expr_name = "Ellipsis"; |
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441 break; |
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442 case Compare_kind: |
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443 expr_name = "comparison"; |
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444 break; |
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445 case IfExp_kind: |
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446 expr_name = "conditional expression"; |
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447 break; |
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448 default: |
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449 PyErr_Format(PyExc_SystemError, |
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450 "unexpected expression in assignment %d (line %d)", |
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451 e->kind, e->lineno); |
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452 return 0; |
| 35742 | 453 } |
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454 /* Check for error string set by switch */ |
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455 if (expr_name) { |
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456 char buf[300]; |
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457 PyOS_snprintf(buf, sizeof(buf), |
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458 "can't %s %s", |
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459 ctx == Store ? "assign to" : "delete", |
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460 expr_name); |
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461 return ast_error(n, buf); |
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462 } |
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463 |
| 35742 | 464 /* If the LHS is a list or tuple, we need to set the assignment |
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465 context for all the contained elements. |
| 35742 | 466 */ |
| 467 if (s) { | |
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468 int i; |
| 35742 | 469 |
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470 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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471 if (!set_context((expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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472 return 0; |
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473 } |
| 35742 | 474 } |
| 475 return 1; | |
| 476 } | |
| 477 | |
| 478 static operator_ty | |
| 479 ast_for_augassign(const node *n) | |
| 480 { | |
| 481 REQ(n, augassign); | |
| 482 n = CHILD(n, 0); | |
| 483 switch (STR(n)[0]) { | |
| 484 case '+': | |
| 485 return Add; | |
| 486 case '-': | |
| 487 return Sub; | |
| 488 case '/': | |
| 489 if (STR(n)[1] == '/') | |
| 490 return FloorDiv; | |
| 491 else | |
| 492 return Div; | |
| 493 case '%': | |
| 494 return Mod; | |
| 495 case '<': | |
| 496 return LShift; | |
| 497 case '>': | |
| 498 return RShift; | |
| 499 case '&': | |
| 500 return BitAnd; | |
| 501 case '^': | |
| 502 return BitXor; | |
| 503 case '|': | |
| 504 return BitOr; | |
| 505 case '*': | |
| 506 if (STR(n)[1] == '*') | |
| 507 return Pow; | |
| 508 else | |
| 509 return Mult; | |
| 510 default: | |
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511 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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512 return (operator_ty)0; |
| 35742 | 513 } |
| 514 } | |
| 515 | |
| 516 static cmpop_ty | |
| 517 ast_for_comp_op(const node *n) | |
| 518 { | |
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519 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 520 |'is' 'not' |
| 521 */ | |
| 522 REQ(n, comp_op); | |
| 523 if (NCH(n) == 1) { | |
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524 n = CHILD(n, 0); |
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525 switch (TYPE(n)) { |
| 35742 | 526 case LESS: |
| 527 return Lt; | |
| 528 case GREATER: | |
| 529 return Gt; | |
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530 case EQEQUAL: /* == */ |
| 35742 | 531 return Eq; |
| 532 case LESSEQUAL: | |
| 533 return LtE; | |
| 534 case GREATEREQUAL: | |
| 535 return GtE; | |
| 536 case NOTEQUAL: | |
| 537 return NotEq; | |
| 538 case NAME: | |
| 539 if (strcmp(STR(n), "in") == 0) | |
| 540 return In; | |
| 541 if (strcmp(STR(n), "is") == 0) | |
| 542 return Is; | |
| 543 default: | |
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544 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 545 STR(n)); |
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546 return (cmpop_ty)0; |
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547 } |
| 35742 | 548 } |
| 549 else if (NCH(n) == 2) { | |
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550 /* handle "not in" and "is not" */ |
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551 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 552 case NAME: |
| 553 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 554 return NotIn; | |
| 555 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 556 return IsNot; | |
| 557 default: | |
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558 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 559 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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560 return (cmpop_ty)0; |
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561 } |
| 35742 | 562 } |
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563 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 564 NCH(n)); |
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565 return (cmpop_ty)0; |
| 35742 | 566 } |
| 567 | |
| 568 static asdl_seq * | |
| 569 seq_for_testlist(struct compiling *c, const node *n) | |
| 570 { | |
| 571 /* testlist: test (',' test)* [','] */ | |
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572 asdl_seq *seq; |
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573 expr_ty expression; |
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574 int i; |
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575 assert(TYPE(n) == testlist || TYPE(n) == testlist_comp); |
| 35742 | 576 |
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577 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 578 if (!seq) |
| 579 return NULL; | |
| 580 | |
| 581 for (i = 0; i < NCH(n); i += 2) { | |
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582 assert(TYPE(CHILD(n, i)) == test || TYPE(CHILD(n, i)) == test_nocond); |
| 35742 | 583 |
| 584 expression = ast_for_expr(c, CHILD(n, i)); | |
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585 if (!expression) |
| 35742 | 586 return NULL; |
| 587 | |
| 588 assert(i / 2 < seq->size); | |
| 589 asdl_seq_SET(seq, i / 2, expression); | |
| 590 } | |
| 591 return seq; | |
| 592 } | |
| 593 | |
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594 static arg_ty |
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595 compiler_arg(struct compiling *c, const node *n) |
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596 { |
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597 identifier name; |
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598 expr_ty annotation = NULL; |
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599 node *ch; |
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600 |
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601 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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602 ch = CHILD(n, 0); |
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603 name = NEW_IDENTIFIER(ch); |
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604 if (!name) |
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605 return NULL; |
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606 |
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607 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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608 annotation = ast_for_expr(c, CHILD(n, 2)); |
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609 if (!annotation) |
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610 return NULL; |
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611 } |
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612 |
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613 return arg(name, annotation, c->c_arena); |
| 35742 | 614 } |
| 615 | |
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616 /* returns -1 if failed to handle keyword only arguments |
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617 returns new position to keep processing if successful |
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618 (',' tfpdef ['=' test])* |
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619 ^^^ |
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620 start pointing here |
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621 */ |
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622 static int |
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623 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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624 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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625 { |
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626 node *ch; |
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627 expr_ty expression, annotation; |
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628 arg_ty arg; |
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629 int i = start; |
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630 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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631 assert(kwonlyargs != NULL); |
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632 assert(kwdefaults != NULL); |
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633 while (i < NCH(n)) { |
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634 ch = CHILD(n, i); |
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635 switch (TYPE(ch)) { |
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636 case vfpdef: |
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637 case tfpdef: |
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638 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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639 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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640 asdl_seq_SET(kwdefaults, j, expression); |
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641 i += 2; /* '=' and test */ |
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642 } |
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643 else { /* setting NULL if no default value exists */ |
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644 asdl_seq_SET(kwdefaults, j, NULL); |
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645 } |
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Neal Norwitz <nnorwitz@gmail.com>
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646 if (NCH(ch) == 3) { |
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parents:
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|
647 /* ch is NAME ':' test */ |
|
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648 annotation = ast_for_expr(c, CHILD(ch, 2)); |
|
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649 if (!annotation) { |
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|
650 ast_error(ch, "expected expression"); |
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651 goto error; |
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|
652 } |
|
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|
653 } |
|
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|
654 else { |
|
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|
655 annotation = NULL; |
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|
656 } |
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|
657 ch = CHILD(ch, 0); |
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658 arg = arg(NEW_IDENTIFIER(ch), annotation, c->c_arena); |
|
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|
659 if (!arg) { |
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|
660 ast_error(ch, "expecting name"); |
|
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Jiwon Seo's PEP 3102 implementation.
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|
661 goto error; |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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|
662 } |
|
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|
663 asdl_seq_SET(kwonlyargs, j++, arg); |
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parents:
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|
664 i += 2; /* the name and the comma */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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|
665 break; |
|
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Jiwon Seo's PEP 3102 implementation.
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|
666 case DOUBLESTAR: |
|
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Jiwon Seo's PEP 3102 implementation.
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667 return i; |
|
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Jiwon Seo's PEP 3102 implementation.
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|
668 default: |
|
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Jiwon Seo's PEP 3102 implementation.
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|
669 ast_error(ch, "unexpected node"); |
|
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Jiwon Seo's PEP 3102 implementation.
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670 goto error; |
|
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Jiwon Seo's PEP 3102 implementation.
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|
671 } |
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Jiwon Seo's PEP 3102 implementation.
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|
672 } |
|
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Jiwon Seo's PEP 3102 implementation.
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|
673 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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|
674 error: |
|
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Jiwon Seo's PEP 3102 implementation.
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|
675 return -1; |
|
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Jiwon Seo's PEP 3102 implementation.
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|
676 } |
| 35742 | 677 |
|
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45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
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|
678 /* Create AST for argument list. */ |
| 35742 | 679 |
| 680 static arguments_ty | |
| 681 ast_for_arguments(struct compiling *c, const node *n) | |
| 682 { | |
|
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|
683 /* This function handles both typedargslist (function definition) |
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|
684 and varargslist (lambda definition). |
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|
685 |
|
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parents:
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changeset
|
686 parameters: '(' [typedargslist] ')' |
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|
687 typedargslist: ((tfpdef ['=' test] ',')* |
|
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|
688 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
|
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|
689 | '**' tfpdef) |
|
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|
690 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
|
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|
691 tfpdef: NAME [':' test] |
|
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|
692 varargslist: ((vfpdef ['=' test] ',')* |
|
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|
693 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
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|
694 | '**' vfpdef) |
|
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|
695 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
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|
696 vfpdef: NAME |
| 35742 | 697 */ |
|
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Jiwon Seo's PEP 3102 implementation.
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|
698 int i, j, k, nposargs = 0, nkwonlyargs = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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|
699 int nposdefaults = 0, found_default = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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changeset
|
700 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 701 identifier vararg = NULL, kwarg = NULL; |
|
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|
702 arg_ty arg; |
|
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parents:
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|
703 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 704 node *ch; |
| 705 | |
| 706 if (TYPE(n) == parameters) { | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
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|
707 if (NCH(n) == 2) /* () as argument list */ |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
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|
708 return arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
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|
709 NULL, c->c_arena); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
710 n = CHILD(n, 1); |
| 35742 | 711 } |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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changeset
|
712 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 713 |
|
40215
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
714 /* first count the number of positional args & defaults */ |
| 35742 | 715 for (i = 0; i < NCH(n); i++) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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changeset
|
716 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
717 if (TYPE(ch) == STAR) { |
|
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Guido van Rossum <guido@python.org>
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changeset
|
718 /* skip star and possible argument */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
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diff
changeset
|
719 i++; |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
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changeset
|
720 i += (TYPE(CHILD(n, i)) == tfpdef |
|
9ad84070b22d
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|
721 || TYPE(CHILD(n, i)) == vfpdef); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
722 break; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
723 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
724 if (TYPE(ch) == DOUBLESTAR) break; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
725 if (TYPE(ch) == vfpdef || TYPE(ch) == tfpdef) nposargs++; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
726 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
727 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
728 /* count the number of keyword only args & |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
729 defaults for keyword only args */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
730 for ( ; i < NCH(n); ++i) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
731 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
732 if (TYPE(ch) == DOUBLESTAR) break; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
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changeset
|
733 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 734 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
735 posargs = (nposargs ? asdl_seq_new(nposargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
736 if (!posargs && nposargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
737 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
738 kwonlyargs = (nkwonlyargs ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
739 asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
740 if (!kwonlyargs && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
741 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
742 posdefaults = (nposdefaults ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
743 asdl_seq_new(nposdefaults, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
744 if (!posdefaults && nposdefaults) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
745 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
746 /* The length of kwonlyargs and kwdefaults are same |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
747 since we set NULL as default for keyword only argument w/o default |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
748 - we have sequence data structure, but no dictionary */ |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
749 kwdefaults = (nkwonlyargs ? |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
750 asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
751 if (!kwdefaults && nkwonlyargs) |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
752 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
753 |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
754 if (nposargs + nkwonlyargs > 255) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
755 ast_error(n, "more than 255 arguments"); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
756 return NULL; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
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diff
changeset
|
757 } |
| 35742 | 758 |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
759 /* tfpdef: NAME [':' test] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
760 vfpdef: NAME |
| 35742 | 761 */ |
| 762 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
763 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
|
764 k = 0; /* index for args */ |
| 35742 | 765 while (i < NCH(n)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
766 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
767 switch (TYPE(ch)) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
768 case tfpdef: |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
769 case vfpdef: |
| 35742 | 770 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 771 anything other than EQUAL or a comma? */ | |
| 772 /* XXX Should NCH(n) check be made a separate check? */ | |
| 773 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
774 expr_ty expression = ast_for_expr(c, CHILD(n, i + 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
775 if (!expression) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
776 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
777 assert(posdefaults != NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
778 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 779 i += 2; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
780 found_default = 1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
781 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
782 else if (found_default) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
783 ast_error(n, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
784 "non-default argument follows default argument"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
785 goto error; |
| 35742 | 786 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
787 arg = compiler_arg(c, ch); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
788 if (!arg) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
789 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
790 asdl_seq_SET(posargs, k++, arg); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
791 |
| 35742 | 792 i += 2; /* the name and the comma */ |
| 793 break; | |
| 794 case STAR: | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
795 if (i+1 >= NCH(n)) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
796 ast_error(CHILD(n, i), "no name for vararg"); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
797 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
798 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
799 ch = CHILD(n, i+1); /* tfpdef or COMMA */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
800 if (TYPE(ch) == COMMA) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
801 int res = 0; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
802 i += 2; /* now follows keyword only arguments */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
803 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
804 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
805 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
806 i = res; /* res has new position to process */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
807 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
808 else { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
809 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
810 if (NCH(ch) > 1) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
811 /* there is an annotation on the vararg */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
812 varargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
813 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
814 i += 3; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
815 if (i < NCH(n) && (TYPE(CHILD(n, i)) == tfpdef |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
816 || TYPE(CHILD(n, i)) == vfpdef)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
817 int res = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
818 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
819 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
820 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
821 i = res; /* res has new position to process */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
822 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
823 } |
| 35742 | 824 break; |
| 825 case DOUBLESTAR: | |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
826 ch = CHILD(n, i+1); /* tfpdef */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
827 assert(TYPE(ch) == tfpdef || TYPE(ch) == vfpdef); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
828 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
829 if (NCH(ch) > 1) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
830 /* there is an annotation on the kwarg */ |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
831 kwargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
832 } |
| 35742 | 833 i += 3; |
| 834 break; | |
| 835 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
836 PyErr_Format(PyExc_SystemError, |
| 35742 | 837 "unexpected node in varargslist: %d @ %d", |
| 838 TYPE(ch), i); | |
| 839 goto error; | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
840 } |
| 35742 | 841 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
842 return arguments(posargs, vararg, varargannotation, kwonlyargs, kwarg, |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
843 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 844 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
|
845 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
|
846 Py_XDECREF(kwarg); |
| 35742 | 847 return NULL; |
| 848 } | |
| 849 | |
| 850 static expr_ty | |
| 851 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 852 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
853 expr_ty e; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
854 identifier id; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
855 int lineno, col_offset; |
| 35742 | 856 int i; |
| 857 | |
| 858 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
|
859 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
860 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
861 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
|
862 |
| 35742 | 863 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 864 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
|
865 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
866 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 867 if (!e) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
868 return NULL; |
| 35742 | 869 |
| 870 for (i = 2; i < NCH(n); i+=2) { | |
| 871 id = NEW_IDENTIFIER(CHILD(n, i)); | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
872 if (!id) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
873 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
874 e = Attribute(e, id, Load, lineno, col_offset, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
875 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
876 return NULL; |
| 35742 | 877 } |
| 878 | |
| 879 return e; | |
| 880 } | |
| 881 | |
| 882 static expr_ty | |
| 883 ast_for_decorator(struct compiling *c, const node *n) | |
| 884 { | |
| 885 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 886 expr_ty d = NULL; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
887 expr_ty name_expr; |
| 35742 | 888 |
| 889 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
890 REQ(CHILD(n, 0), AT); |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
891 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 892 |
| 893 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 894 if (!name_expr) | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
895 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
896 |
| 35742 | 897 if (NCH(n) == 3) { /* No arguments */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
898 d = name_expr; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
899 name_expr = NULL; |
| 35742 | 900 } |
| 901 else if (NCH(n) == 5) { /* Call with no arguments */ | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
902 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
903 n->n_col_offset, c->c_arena); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
904 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
905 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
906 name_expr = NULL; |
| 35742 | 907 } |
| 908 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
909 d = ast_for_call(c, CHILD(n, 3), name_expr); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
910 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
911 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
912 name_expr = NULL; |
| 35742 | 913 } |
| 914 | |
| 915 return d; | |
| 916 } | |
| 917 | |
| 918 static asdl_seq* | |
| 919 ast_for_decorators(struct compiling *c, const node *n) | |
| 920 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
921 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
|
922 expr_ty d; |
| 35742 | 923 int i; |
| 924 | |
| 925 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
|
926 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 927 if (!decorator_seq) |
| 928 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
929 |
| 35742 | 930 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
|
931 d = ast_for_decorator(c, CHILD(n, i)); |
|
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|
932 if (!d) |
|
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|
933 return NULL; |
|
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|
934 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 935 } |
| 936 return decorator_seq; | |
| 937 } | |
| 938 | |
| 939 static stmt_ty | |
|
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|
940 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 941 { |
|
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|
942 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
|
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|
943 identifier name; |
|
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|
944 arguments_ty args; |
|
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|
945 asdl_seq *body; |
|
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|
946 expr_ty returns = NULL; |
|
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|
947 int name_i = 1; |
| 35742 | 948 |
| 949 REQ(n, funcdef); | |
| 950 | |
| 951 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 952 if (!name) | |
|
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953 return NULL; |
| 35742 | 954 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 955 if (!args) | |
|
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956 return NULL; |
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957 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
|
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958 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
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959 if (!returns) |
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960 return NULL; |
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|
961 name_i += 2; |
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|
962 } |
| 35742 | 963 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 964 if (!body) | |
|
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965 return NULL; |
| 35742 | 966 |
|
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|
967 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
|
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|
968 n->n_col_offset, c->c_arena); |
| 35742 | 969 } |
| 970 | |
|
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|
971 static stmt_ty |
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|
972 ast_for_decorated(struct compiling *c, const node *n) |
|
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973 { |
|
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|
974 /* decorated: decorators (classdef | funcdef) */ |
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|
975 stmt_ty thing = NULL; |
|
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|
976 asdl_seq *decorator_seq = NULL; |
|
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|
977 |
|
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|
978 REQ(n, decorated); |
|
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|
979 |
|
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|
980 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
|
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|
981 if (!decorator_seq) |
|
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|
982 return NULL; |
|
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|
983 |
|
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|
984 assert(TYPE(CHILD(n, 1)) == funcdef || |
|
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|
985 TYPE(CHILD(n, 1)) == classdef); |
|
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|
986 |
|
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|
987 if (TYPE(CHILD(n, 1)) == funcdef) { |
|
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|
988 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
|
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|
989 } else if (TYPE(CHILD(n, 1)) == classdef) { |
|
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|
990 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
|
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|
991 } |
|
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|
992 return thing; |
|
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|
993 } |
|
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|
994 |
| 35742 | 995 static expr_ty |
| 996 ast_for_lambdef(struct compiling *c, const node *n) | |
| 997 { | |
|
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|
998 /* lambdef: 'lambda' [varargslist] ':' test |
|
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|
999 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1000 arguments_ty args; |
| 1001 expr_ty expression; | |
| 1002 | |
| 1003 if (NCH(n) == 3) { | |
|
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|
1004 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
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|
1005 NULL, c->c_arena); |
| 35742 | 1006 if (!args) |
| 1007 return NULL; | |
| 1008 expression = ast_for_expr(c, CHILD(n, 2)); | |
|
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|
1009 if (!expression) |
| 35742 | 1010 return NULL; |
| 1011 } | |
| 1012 else { | |
| 1013 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1014 if (!args) | |
| 1015 return NULL; | |
| 1016 expression = ast_for_expr(c, CHILD(n, 3)); | |
|
36065
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|
1017 if (!expression) |
| 35742 | 1018 return NULL; |
| 1019 } | |
| 1020 | |
|
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|
1021 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1022 } |
| 1023 | |
|
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|
1024 static expr_ty |
|
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|
1025 ast_for_ifexpr(struct compiling *c, const node *n) |
|
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1026 { |
|
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|
1027 /* test: or_test 'if' or_test 'else' test */ |
|
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|
1028 expr_ty expression, body, orelse; |
|
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|
1029 |
|
36676
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|
1030 assert(NCH(n) == 5); |
|
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|
1031 body = ast_for_expr(c, CHILD(n, 0)); |
|
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|
1032 if (!body) |
|
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|
1033 return NULL; |
|
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1034 expression = ast_for_expr(c, CHILD(n, 2)); |
|
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|
1035 if (!expression) |
|
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|
1036 return NULL; |
|
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|
1037 orelse = ast_for_expr(c, CHILD(n, 4)); |
|
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|
1038 if (!orelse) |
|
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|
1039 return NULL; |
|
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|
1040 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
|
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|
1041 c->c_arena); |
|
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|
1042 } |
|
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|
1043 |
|
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|
1044 /* |
|
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|
1045 Count the number of 'for' loops in a comprehension. |
| 35742 | 1046 |
|
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|
1047 Helper for ast_for_comprehension(). |
| 35742 | 1048 */ |
| 1049 | |
| 1050 static int | |
|
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|
1051 count_comp_fors(const node *n) |
| 35742 | 1052 { |
|
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|
1053 int n_fors = 0; |
| 35742 | 1054 |
|
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|
1055 count_comp_for: |
|
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|
1056 n_fors++; |
|
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|
1057 REQ(n, comp_for); |
|
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|
1058 if (NCH(n) == 5) |
|
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|
1059 n = CHILD(n, 4); |
|
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|
1060 else |
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|
1061 return n_fors; |
|
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|
1062 count_comp_iter: |
|
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|
1063 REQ(n, comp_iter); |
|
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|
1064 n = CHILD(n, 0); |
|
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|
1065 if (TYPE(n) == comp_for) |
|
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|
1066 goto count_comp_for; |
|
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|
1067 else if (TYPE(n) == comp_if) { |
|
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|
1068 if (NCH(n) == 3) { |
|
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|
1069 n = CHILD(n, 2); |
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|
1070 goto count_comp_iter; |
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|
1071 } |
|
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|
1072 else |
|
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|
1073 return n_fors; |
|
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|
1074 } |
|
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|
1075 |
|
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|
1076 /* Should never be reached */ |
|
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|
1077 PyErr_SetString(PyExc_SystemError, |
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1078 "logic error in count_comp_fors"); |
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1079 return -1; |
| 35742 | 1080 } |
| 1081 | |
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1082 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1083 |
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1084 Helper for ast_for_comprehension(). |
| 35742 | 1085 */ |
| 1086 | |
| 1087 static int | |
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1088 count_comp_ifs(const node *n) |
| 35742 | 1089 { |
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1090 int n_ifs = 0; |
| 35742 | 1091 |
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1092 while (1) { |
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1093 REQ(n, comp_iter); |
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1094 if (TYPE(CHILD(n, 0)) == comp_for) |
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1095 return n_ifs; |
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1096 n = CHILD(n, 0); |
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1097 REQ(n, comp_if); |
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1098 n_ifs++; |
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1099 if (NCH(n) == 2) |
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1100 return n_ifs; |
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1101 n = CHILD(n, 2); |
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1102 } |
| 35742 | 1103 } |
| 1104 | |
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1105 static asdl_seq * |
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1106 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1107 { |
| 1108 int i, n_fors; | |
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1109 asdl_seq *comps; |
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1110 |
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1111 n_fors = count_comp_fors(n); |
| 35742 | 1112 if (n_fors == -1) |
| 1113 return NULL; | |
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1114 |
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1115 comps = asdl_seq_new(n_fors, c->c_arena); |
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1116 if (!comps) |
| 35742 | 1117 return NULL; |
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1118 |
| 35742 | 1119 for (i = 0; i < n_fors; i++) { |
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1120 comprehension_ty comp; |
| 35742 | 1121 asdl_seq *t; |
| 1122 expr_ty expression; | |
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1123 node *for_ch; |
| 35742 | 1124 |
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1125 REQ(n, comp_for); |
| 35742 | 1126 |
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1127 for_ch = CHILD(n, 1); |
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1128 t = ast_for_exprlist(c, for_ch, Store); |
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1129 if (!t) |
| 35742 | 1130 return NULL; |
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1131 expression = ast_for_expr(c, CHILD(n, 3)); |
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1132 if (!expression) |
| 35742 | 1133 return NULL; |
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1134 |
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1135 /* Check the # of children rather than the length of t, since |
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1136 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
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1137 if (NCH(for_ch) == 1) |
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1138 comp = comprehension((expr_ty)asdl_seq_GET(t, 0), expression, |
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1139 NULL, c->c_arena); |
| 35742 | 1140 else |
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1141 comp = comprehension(Tuple(t, Store, LINENO(n), n->n_col_offset, |
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1142 c->c_arena), |
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1143 expression, NULL, c->c_arena); |
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1144 |
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1145 if (!comp) |
| 35742 | 1146 return NULL; |
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1147 |
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1148 if (NCH(n) == 5) { |
| 35742 | 1149 int j, n_ifs; |
| 1150 asdl_seq *ifs; | |
| 1151 | |
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1152 n = CHILD(n, 4); |
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1153 n_ifs = count_comp_ifs(n); |
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1154 if (n_ifs == -1) |
| 35742 | 1155 return NULL; |
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1156 |
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1157 ifs = asdl_seq_new(n_ifs, c->c_arena); |
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1158 if (!ifs) |
| 35742 | 1159 return NULL; |
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1160 |
| 35742 | 1161 for (j = 0; j < n_ifs; j++) { |
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1162 REQ(n, comp_iter); |
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1163 n = CHILD(n, 0); |
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1164 REQ(n, comp_if); |
| 35742 | 1165 |
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1166 expression = ast_for_expr(c, CHILD(n, 1)); |
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1167 if (!expression) |
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1168 return NULL; |
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1169 asdl_seq_SET(ifs, j, expression); |
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1170 if (NCH(n) == 3) |
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1171 n = CHILD(n, 2); |
| 35742 | 1172 } |
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1173 /* on exit, must guarantee that n is a comp_for */ |
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1174 if (TYPE(n) == comp_iter) |
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1175 n = CHILD(n, 0); |
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1176 comp->ifs = ifs; |
| 35742 | 1177 } |
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1178 asdl_seq_SET(comps, i, comp); |
| 35742 | 1179 } |
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1180 return comps; |
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1181 } |
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1182 |
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1183 static expr_ty |
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1184 ast_for_itercomp(struct compiling *c, const node *n, int type) |
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1185 { |
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1186 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1187 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1188 expr_ty elt; |
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1189 asdl_seq *comps; |
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1190 |
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1191 assert(NCH(n) > 1); |
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1192 |
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1193 elt = ast_for_expr(c, CHILD(n, 0)); |
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1194 if (!elt) |
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1195 return NULL; |
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1196 |
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1197 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1198 if (!comps) |
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1199 return NULL; |
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1200 |
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1201 if (type == COMP_GENEXP) |
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1202 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1203 else if (type == COMP_LISTCOMP) |
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1204 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1205 else if (type == COMP_SETCOMP) |
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1206 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1207 else |
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1208 /* Should never happen */ |
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1209 return NULL; |
| 35742 | 1210 } |
| 1211 | |
| 1212 static expr_ty | |
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1213 ast_for_dictcomp(struct compiling *c, const node *n) |
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1214 { |
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1215 expr_ty key, value; |
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1216 asdl_seq *comps; |
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1217 |
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1218 assert(NCH(n) > 3); |
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1219 REQ(CHILD(n, 1), COLON); |
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1220 |
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1221 key = ast_for_expr(c, CHILD(n, 0)); |
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1222 if (!key) |
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1223 return NULL; |
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1224 |
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1225 value = ast_for_expr(c, CHILD(n, 2)); |
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1226 if (!value) |
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1227 return NULL; |
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1228 |
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1229 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1230 if (!comps) |
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1231 return NULL; |
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1232 |
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1233 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1234 } |
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1235 |
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1236 static expr_ty |
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1237 ast_for_genexp(struct compiling *c, const node *n) |
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1238 { |
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1239 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1240 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1241 } |
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1242 |
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1243 static expr_ty |
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1244 ast_for_listcomp(struct compiling *c, const node *n) |
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1245 { |
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1246 assert(TYPE(n) == (testlist_comp)); |
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1247 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1248 } |
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1249 |
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1250 static expr_ty |
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1251 ast_for_setcomp(struct compiling *c, const node *n) |
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1252 { |
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1253 assert(TYPE(n) == (dictorsetmaker)); |
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1254 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1255 } |
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1256 |
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1257 |
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1258 static expr_ty |
| 35742 | 1259 ast_for_atom(struct compiling *c, const node *n) |
| 1260 { | |
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1261 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1262 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
|
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1263 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1264 */ |
| 1265 node *ch = CHILD(n, 0); | |
| 40894 | 1266 int bytesmode = 0; |
| 35742 | 1267 |
| 1268 switch (TYPE(ch)) { | |
| 1269 case NAME: | |
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1270 /* All names start in Load context, but may later be |
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1271 changed. */ |
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1272 return Name(NEW_IDENTIFIER(ch), Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1273 case STRING: { |
| 40894 | 1274 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1275 if (!str) { |
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1276 if (PyErr_ExceptionMatches(PyExc_UnicodeError)){ |
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1277 PyObject *type, *value, *tback, *errstr; |
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1278 PyErr_Fetch(&type, &value, &tback); |
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1279 errstr = ((PyUnicodeErrorObject *)value)->reason; |
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1280 if (errstr) { |
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1281 char *s = ""; |
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1282 char buf[128]; |
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1283 s = PyString_AsString(errstr); |
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1284 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
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1285 ast_error(n, buf); |
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1286 } else { |
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1287 ast_error(n, "(unicode error) unknown error"); |
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1288 } |
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1289 Py_DECREF(type); |
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1290 Py_DECREF(value); |
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1291 Py_XDECREF(tback); |
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1292 } |
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1293 return NULL; |
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1294 } |
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1295 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1296 if (bytesmode) |
| 1297 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1298 else | |
| 1299 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1300 } |
| 1301 case NUMBER: { | |
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1302 PyObject *pynum = parsenumber(STR(ch)); |
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1303 if (!pynum) |
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1304 return NULL; |
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1305 |
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1306 PyArena_AddPyObject(c->c_arena, pynum); |
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1307 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1308 } |
|
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1309 case ELLIPSIS: /* Ellipsis */ |
|
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1310 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1311 case LPAR: /* some parenthesized expressions */ |
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1312 ch = CHILD(n, 1); |
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1313 |
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1314 if (TYPE(ch) == RPAR) |
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1315 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1316 |
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1317 if (TYPE(ch) == yield_expr) |
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1318 return ast_for_expr(c, ch); |
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1319 |
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1320 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
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1321 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
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1322 return ast_for_genexp(c, ch); |
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1323 |
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1324 return ast_for_testlist(c, ch); |
| 35742 | 1325 case LSQB: /* list (or list comprehension) */ |
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1326 ch = CHILD(n, 1); |
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1327 |
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1328 if (TYPE(ch) == RSQB) |
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1329 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1330 |
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1331 REQ(ch, testlist_comp); |
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1332 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
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1333 asdl_seq *elts = seq_for_testlist(c, ch); |
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1334 if (!elts) |
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1335 return NULL; |
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1336 |
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1337 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1338 } |
|
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diff
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|
1339 else |
|
cc992d75d5b3
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diff
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|
1340 return ast_for_listcomp(c, ch); |
| 35742 | 1341 case LBRACE: { |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
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|
1342 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1343 * test (gen_for | (',' test)* [',']) */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1344 int i, size; |
|
54cd47788811
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Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1345 asdl_seq *keys, *values; |
|
54cd47788811
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parents:
40450
diff
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|
1346 |
|
54cd47788811
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Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
1347 ch = CHILD(n, 1); |
|
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Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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diff
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|
1348 if (TYPE(ch) == RBRACE) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1349 /* it's an empty dict */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
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parents:
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diff
changeset
|
1350 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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diff
changeset
|
1351 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1352 /* it's a simple set */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1353 asdl_seq *elts; |
|
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d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
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|
1354 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1355 elts = asdl_seq_new(size, c->c_arena); |
|
41464
060c79f6d919
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|
1356 if (!elts) |
|
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|
1357 return NULL; |
|
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parents:
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diff
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|
1358 for (i = 0; i < NCH(ch); i += 2) { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
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|
1359 expr_ty expression; |
|
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SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
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|
1360 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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|
1361 if (!expression) |
|
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|
1362 return NULL; |
|
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|
1363 asdl_seq_SET(elts, i / 2, expression); |
|
39693
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|
1364 } |
|
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|
1365 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
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|
1366 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
|
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Nick Coghlan <ncoghlan@gmail.com>
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|
1367 /* it's a set comprehension */ |
|
060c79f6d919
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|
1368 return ast_for_setcomp(c, ch); |
|
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Merged revisions 56154-56264 via svnmerge from
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|
1369 } else if (NCH(ch) > 3 && TYPE(CHILD(ch, 3)) == comp_for) { |
|
090588a17490
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|
1370 return ast_for_dictcomp(c, ch); |
|
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|
1371 } else { |
|
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|
1372 /* it's a dict */ |
|
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parents:
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|
1373 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
|
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parents:
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diff
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|
1374 keys = asdl_seq_new(size, c->c_arena); |
|
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|
1375 if (!keys) |
|
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|
1376 return NULL; |
|
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|
1377 |
|
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diff
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|
1378 values = asdl_seq_new(size, c->c_arena); |
|
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SF patch 1547796 by Georg Brandl -- set literals.
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|
1379 if (!values) |
|
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diff
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|
1380 return NULL; |
|
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|
1381 |
|
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|
1382 for (i = 0; i < NCH(ch); i += 4) { |
|
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|
1383 expr_ty expression; |
|
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parents:
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diff
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|
1384 |
|
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|
1385 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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|
1386 if (!expression) |
|
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|
1387 return NULL; |
|
36065
ea083efdc96c
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|
1388 |
|
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|
1389 asdl_seq_SET(keys, i / 4, expression); |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
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|
1390 |
|
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|
1391 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
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|
1392 if (!expression) |
|
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|
1393 return NULL; |
|
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|
1394 |
|
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|
1395 asdl_seq_SET(values, i / 4, expression); |
|
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|
1396 } |
|
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|
1397 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1398 } |
| 35742 | 1399 } |
| 1400 default: | |
|
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|
1401 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
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|
1402 return NULL; |
| 35742 | 1403 } |
| 1404 } | |
| 1405 | |
| 1406 static slice_ty | |
| 1407 ast_for_slice(struct compiling *c, const node *n) | |
| 1408 { | |
| 1409 node *ch; | |
| 1410 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1411 | |
| 1412 REQ(n, subscript); | |
| 1413 | |
| 1414 /* | |
|
39783
7a0ad110e91e
Patch #1550786: ellipsis literal.
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39782
diff
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|
1415 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1416 sliceop: ':' [test] |
| 1417 */ | |
| 1418 ch = CHILD(n, 0); | |
| 1419 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1420 /* 'step' variable hold no significance in terms of being used over | |
| 1421 other vars */ | |
| 1422 step = ast_for_expr(c, ch); | |
| 1423 if (!step) | |
| 1424 return NULL; | |
| 1425 | |
|
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|
1426 return Index(step, c->c_arena); |
| 35742 | 1427 } |
| 1428 | |
| 1429 if (TYPE(ch) == test) { | |
|
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|
1430 lower = ast_for_expr(c, ch); |
| 35742 | 1431 if (!lower) |
| 1432 return NULL; | |
| 1433 } | |
| 1434 | |
| 1435 /* If there's an upper bound it's in the second or third position. */ | |
| 1436 if (TYPE(ch) == COLON) { | |
|
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|
1437 if (NCH(n) > 1) { |
|
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|
1438 node *n2 = CHILD(n, 1); |
| 35742 | 1439 |
|
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|
1440 if (TYPE(n2) == test) { |
|
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|
1441 upper = ast_for_expr(c, n2); |
| 35742 | 1442 if (!upper) |
| 1443 return NULL; | |
| 1444 } | |
|
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|
1445 } |
| 35742 | 1446 } else if (NCH(n) > 2) { |
|
40450
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|
1447 node *n2 = CHILD(n, 2); |
| 35742 | 1448 |
|
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|
1449 if (TYPE(n2) == test) { |
|
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|
1450 upper = ast_for_expr(c, n2); |
| 35742 | 1451 if (!upper) |
| 1452 return NULL; | |
| 1453 } | |
| 1454 } | |
| 1455 | |
| 1456 ch = CHILD(n, NCH(n) - 1); | |
| 1457 if (TYPE(ch) == sliceop) { | |
|
37879
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changeset
|
1458 if (NCH(ch) == 1) { |
|
f731859e9b3b
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|
1459 /* No expression, so step is None */ |
|
f731859e9b3b
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changeset
|
1460 ch = CHILD(ch, 0); |
|
f731859e9b3b
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|
1461 step = Name(new_identifier("None", c->c_arena), Load, |
|
f731859e9b3b
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diff
changeset
|
1462 LINENO(ch), ch->n_col_offset, c->c_arena); |
| 35742 | 1463 if (!step) |
| 1464 return NULL; | |
|
37879
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|
1465 } else { |
|
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|
1466 ch = CHILD(ch, 1); |
|
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|
1467 if (TYPE(ch) == test) { |
|
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changeset
|
1468 step = ast_for_expr(c, ch); |
|
f731859e9b3b
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changeset
|
1469 if (!step) |
|
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changeset
|
1470 return NULL; |
|
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|
1471 } |
| 35742 | 1472 } |
| 1473 } | |
| 1474 | |
|
36065
ea083efdc96c
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diff
changeset
|
1475 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1476 } |
| 1477 | |
| 1478 static expr_ty | |
| 1479 ast_for_binop(struct compiling *c, const node *n) | |
| 1480 { | |
|
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|
1481 /* Must account for a sequence of expressions. |
|
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changeset
|
1482 How should A op B op C by represented? |
|
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|
1483 BinOp(BinOp(A, op, B), op, C). |
|
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|
1484 */ |
| 35742 | 1485 |
|
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|
1486 int i, nops; |
|
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changeset
|
1487 expr_ty expr1, expr2, result; |
|
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changeset
|
1488 operator_ty newoperator; |
|
06145fbc7ab9
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|
1489 |
|
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changeset
|
1490 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
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|
1491 if (!expr1) |
|
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changeset
|
1492 return NULL; |
| 35742 | 1493 |
|
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|
1494 expr2 = ast_for_expr(c, CHILD(n, 2)); |
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1495 if (!expr2) |
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1496 return NULL; |
|
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|
1497 |
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|
1498 newoperator = get_operator(CHILD(n, 1)); |
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1499 if (!newoperator) |
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|
1500 return NULL; |
| 35742 | 1501 |
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|
1502 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
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1503 c->c_arena); |
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|
1504 if (!result) |
|
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|
1505 return NULL; |
| 35742 | 1506 |
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|
1507 nops = (NCH(n) - 1) / 2; |
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|
1508 for (i = 1; i < nops; i++) { |
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|
1509 expr_ty tmp_result, tmp; |
|
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|
1510 const node* next_oper = CHILD(n, i * 2 + 1); |
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|
1511 |
|
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|
1512 newoperator = get_operator(next_oper); |
|
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|
1513 if (!newoperator) |
| 35742 | 1514 return NULL; |
| 1515 | |
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1516 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
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|
1517 if (!tmp) |
| 35742 | 1518 return NULL; |
| 1519 | |
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|
1520 tmp_result = BinOp(result, newoperator, tmp, |
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|
1521 LINENO(next_oper), next_oper->n_col_offset, |
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|
1522 c->c_arena); |
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1523 if (!tmp) |
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1524 return NULL; |
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1525 result = tmp_result; |
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1526 } |
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1527 return result; |
| 35742 | 1528 } |
| 1529 | |
|
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1530 static expr_ty |
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|
1531 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
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1532 { |
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1533 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
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1534 subscriptlist: subscript (',' subscript)* [','] |
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1535 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
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1536 */ |
|
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|
1537 REQ(n, trailer); |
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1538 if (TYPE(CHILD(n, 0)) == LPAR) { |
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|
1539 if (NCH(n) == 2) |
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1540 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
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1541 n->n_col_offset, c->c_arena); |
|
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1542 else |
|
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1543 return ast_for_call(c, CHILD(n, 1), left_expr); |
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1544 } |
|
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|
1545 else if (TYPE(CHILD(n, 0)) == DOT ) { |
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1546 return Attribute(left_expr, NEW_IDENTIFIER(CHILD(n, 1)), Load, |
|
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1547 LINENO(n), n->n_col_offset, c->c_arena); |
|
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1548 } |
|
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1549 else { |
|
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1550 REQ(CHILD(n, 0), LSQB); |
|
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1551 REQ(CHILD(n, 2), RSQB); |
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1552 n = CHILD(n, 1); |
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1553 if (NCH(n) == 1) { |
|
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|
1554 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
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1555 if (!slc) |
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1556 return NULL; |
|
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1557 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
|
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1558 c->c_arena); |
|
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|
1559 } |
|
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1560 else { |
|
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|
1561 /* The grammar is ambiguous here. The ambiguity is resolved |
|
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|
1562 by treating the sequence as a tuple literal if there are |
|
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|
1563 no slice features. |
|
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|
1564 */ |
|
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|
1565 int j; |
|
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|
1566 slice_ty slc; |
|
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|
1567 expr_ty e; |
|
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|
1568 int simple = 1; |
|
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diff
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|
1569 asdl_seq *slices, *elts; |
|
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diff
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|
1570 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
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diff
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|
1571 if (!slices) |
|
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|
1572 return NULL; |
|
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|
1573 for (j = 0; j < NCH(n); j += 2) { |
|
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|
1574 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,
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|
1575 if (!slc) |
|
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|
1576 return NULL; |
|
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diff
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|
1577 if (slc->kind != Index_kind) |
|
40941
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Neal Norwitz <nnorwitz@gmail.com>
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diff
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|
1578 simple = 0; |
|
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diff
changeset
|
1579 asdl_seq_SET(slices, j / 2, slc); |
|
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diff
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|
1580 } |
|
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|
1581 if (!simple) { |
|
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|
1582 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
|
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|
1583 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1584 } |
|
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|
1585 /* extract Index values and put them in a Tuple */ |
|
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diff
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|
1586 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
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e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
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changeset
|
1587 if (!elts) |
|
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|
1588 return NULL; |
|
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|
1589 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
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|
1590 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
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|
1591 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
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|
1592 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
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|
1593 } |
|
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Martin v. Löwis <martin@v.loewis.de>
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diff
changeset
|
1594 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1595 if (!e) |
|
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|
1596 return NULL; |
|
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diff
changeset
|
1597 return Subscript(left_expr, Index(e, c->c_arena), |
|
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Martin v. Löwis <martin@v.loewis.de>
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36780
diff
changeset
|
1598 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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diff
changeset
|
1599 } |
|
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diff
changeset
|
1600 } |
|
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diff
changeset
|
1601 } |
|
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diff
changeset
|
1602 |
|
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diff
changeset
|
1603 static expr_ty |
|
39442
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Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
1604 ast_for_factor(struct compiling *c, const node *n) |
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1605 { |
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1606 node *pfactor, *ppower, *patom, *pnum; |
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1607 expr_ty expression; |
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1608 |
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1609 /* If the unary - operator is applied to a constant, don't generate |
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1610 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
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1611 constant. The peephole optimizer already does something like |
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1612 this but it doesn't handle the case where the constant is |
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1613 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
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1614 PyLongObject. |
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1615 */ |
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1616 if (TYPE(CHILD(n, 0)) == MINUS |
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1617 && NCH(n) == 2 |
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1618 && TYPE((pfactor = CHILD(n, 1))) == factor |
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1619 && NCH(pfactor) == 1 |
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1620 && TYPE((ppower = CHILD(pfactor, 0))) == power |
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1621 && NCH(ppower) == 1 |
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1622 && TYPE((patom = CHILD(ppower, 0))) == atom |
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1623 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
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1624 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
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1625 if (s == NULL) |
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1626 return NULL; |
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1627 s[0] = '-'; |
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1628 strcpy(s + 1, STR(pnum)); |
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1629 PyObject_FREE(STR(pnum)); |
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1630 STR(pnum) = s; |
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1631 return ast_for_atom(c, patom); |
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1632 } |
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1633 |
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1634 expression = ast_for_expr(c, CHILD(n, 1)); |
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1635 if (!expression) |
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1636 return NULL; |
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1637 |
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1638 switch (TYPE(CHILD(n, 0))) { |
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1639 case PLUS: |
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1640 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
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1641 c->c_arena); |
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1642 case MINUS: |
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1643 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
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1644 c->c_arena); |
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1645 case TILDE: |
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1646 return UnaryOp(Invert, expression, LINENO(n), |
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1647 n->n_col_offset, c->c_arena); |
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1648 } |
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1649 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
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1650 TYPE(CHILD(n, 0))); |
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1651 return NULL; |
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1652 } |
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1653 |
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1654 static expr_ty |
|
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1655 ast_for_power(struct compiling *c, const node *n) |
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1656 { |
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1657 /* power: atom trailer* ('**' factor)* |
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1658 */ |
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1659 int i; |
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1660 expr_ty e, tmp; |
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1661 REQ(n, power); |
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1662 e = ast_for_atom(c, CHILD(n, 0)); |
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1663 if (!e) |
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1664 return NULL; |
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1665 if (NCH(n) == 1) |
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1666 return e; |
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1667 for (i = 1; i < NCH(n); i++) { |
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1668 node *ch = CHILD(n, i); |
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1669 if (TYPE(ch) != trailer) |
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1670 break; |
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1671 tmp = ast_for_trailer(c, ch, e); |
|
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1672 if (!tmp) |
|
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1673 return NULL; |
|
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1674 tmp->lineno = e->lineno; |
|
cc992d75d5b3
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1675 tmp->col_offset = e->col_offset; |
|
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1676 e = tmp; |
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1677 } |
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1678 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
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|
1679 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
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1680 if (!f) |
|
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|
1681 return NULL; |
|
36786
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|
1682 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1683 if (!tmp) |
|
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1684 return NULL; |
|
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|
1685 e = tmp; |
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1686 } |
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1687 return e; |
|
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|
1688 } |
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1689 |
|
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|
1690 static expr_ty |
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1691 ast_for_starred(struct compiling *c, const node *n) |
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1692 { |
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1693 expr_ty tmp; |
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1694 REQ(n, star_expr); |
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1695 |
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1696 tmp = ast_for_expr(c, CHILD(n, 1)); |
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1697 if (!tmp) |
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1698 return NULL; |
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1699 |
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1700 /* The Load context is changed later. */ |
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1701 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1702 } |
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1703 |
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|
1704 |
| 35742 | 1705 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1706 */ | |
| 1707 | |
| 1708 static expr_ty | |
| 1709 ast_for_expr(struct compiling *c, const node *n) | |
| 1710 { | |
| 1711 /* handle the full range of simple expressions | |
|
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|
1712 test: or_test ['if' or_test 'else' test] | lambdef |
|
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|
1713 test_nocond: or_test | lambdef_nocond |
|
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|
1714 or_test: and_test ('or' and_test)* |
| 35742 | 1715 and_test: not_test ('and' not_test)* |
| 1716 not_test: 'not' not_test | comparison | |
| 1717 comparison: expr (comp_op expr)* | |
| 1718 expr: xor_expr ('|' xor_expr)* | |
| 1719 xor_expr: and_expr ('^' and_expr)* | |
| 1720 and_expr: shift_expr ('&' shift_expr)* | |
| 1721 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1722 arith_expr: term (('+'|'-') term)* | |
| 1723 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1724 factor: ('+'|'-'|'~') factor | power | |
| 1725 power: atom trailer* ('**' factor)* | |
| 1726 */ | |
| 1727 | |
| 1728 asdl_seq *seq; | |
| 1729 int i; | |
| 1730 | |
| 1731 loop: | |
| 1732 switch (TYPE(n)) { | |
| 1733 case test: | |
|
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|
1734 case test_nocond: |
|
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PEP 308 implementation, including minor refdocs and some testcases. It
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changeset
|
1735 if (TYPE(CHILD(n, 0)) == lambdef || |
|
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diff
changeset
|
1736 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1737 return ast_for_lambdef(c, CHILD(n, 0)); |
|
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Thomas Wouters <thomas@python.org>
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changeset
|
1738 else if (NCH(n) > 1) |
|
6165927431d6
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Thomas Wouters <thomas@python.org>
parents:
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|
1739 return ast_for_ifexpr(c, n); |
|
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|
1740 /* Fallthrough */ |
|
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|
1741 case or_test: |
| 35742 | 1742 case and_test: |
| 1743 if (NCH(n) == 1) { | |
| 1744 n = CHILD(n, 0); | |
| 1745 goto loop; | |
| 1746 } | |
|
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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|
1747 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1748 if (!seq) |
| 1749 return NULL; | |
| 1750 for (i = 0; i < NCH(n); i += 2) { | |
| 1751 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1752 if (!e) | |
| 1753 return NULL; | |
| 1754 asdl_seq_SET(seq, i / 2, e); | |
| 1755 } | |
| 1756 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
|
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changeset
|
1757 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
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|
1758 c->c_arena); |
|
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|
1759 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:
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diff
changeset
|
1760 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1761 case not_test: |
| 1762 if (NCH(n) == 1) { | |
| 1763 n = CHILD(n, 0); | |
| 1764 goto loop; | |
| 1765 } | |
| 1766 else { | |
| 1767 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1768 if (!expression) | |
| 1769 return NULL; | |
| 1770 | |
|
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|
1771 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
|
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|
1772 c->c_arena); |
| 35742 | 1773 } |
| 1774 case comparison: | |
| 1775 if (NCH(n) == 1) { | |
| 1776 n = CHILD(n, 0); | |
| 1777 goto loop; | |
| 1778 } | |
| 1779 else { | |
| 1780 expr_ty expression; | |
|
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|
1781 asdl_int_seq *ops; |
|
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1782 asdl_seq *cmps; |
|
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|
1783 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1784 if (!ops) |
| 1785 return NULL; | |
|
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|
1786 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1787 if (!cmps) { |
| 1788 return NULL; | |
| 1789 } | |
| 1790 for (i = 1; i < NCH(n); i += 2) { | |
|
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|
1791 cmpop_ty newoperator; |
| 35742 | 1792 |
|
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|
1793 newoperator = ast_for_comp_op(CHILD(n, i)); |
|
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|
1794 if (!newoperator) { |
| 35742 | 1795 return NULL; |
|
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|
1796 } |
| 35742 | 1797 |
| 1798 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
|
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|
1799 if (!expression) { |
| 35742 | 1800 return NULL; |
|
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|
1801 } |
| 35742 | 1802 |
|
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|
1803 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1804 asdl_seq_SET(cmps, i / 2, expression); |
| 1805 } | |
| 1806 expression = ast_for_expr(c, CHILD(n, 0)); | |
|
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|
1807 if (!expression) { |
| 35742 | 1808 return NULL; |
|
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|
1809 } |
| 35742 | 1810 |
|
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|
1811 return Compare(expression, ops, cmps, LINENO(n), |
|
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|
1812 n->n_col_offset, c->c_arena); |
| 35742 | 1813 } |
| 1814 break; | |
| 1815 | |
|
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|
1816 case star_expr: |
|
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|
1817 if (TYPE(CHILD(n, 0)) == STAR) { |
|
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|
1818 return ast_for_starred(c, n); |
|
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|
1819 } |
|
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changeset
|
1820 /* Fallthrough */ |
| 35742 | 1821 /* The next five cases all handle BinOps. The main body of code |
| 1822 is the same in each case, but the switch turned inside out to | |
| 1823 reuse the code for each type of operator. | |
| 1824 */ | |
| 1825 case expr: | |
| 1826 case xor_expr: | |
| 1827 case and_expr: | |
| 1828 case shift_expr: | |
| 1829 case arith_expr: | |
| 1830 case term: | |
| 1831 if (NCH(n) == 1) { | |
| 1832 n = CHILD(n, 0); | |
| 1833 goto loop; | |
| 1834 } | |
| 1835 return ast_for_binop(c, n); | |
| 1836 case yield_expr: { | |
|
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|
1837 expr_ty exp = NULL; |
|
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1838 if (NCH(n) == 2) { |
|
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1839 exp = ast_for_testlist(c, CHILD(n, 1)); |
|
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|
1840 if (!exp) |
|
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|
1841 return NULL; |
|
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|
1842 } |
|
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|
1843 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1844 } |
|
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|
1845 case factor: |
| 35742 | 1846 if (NCH(n) == 1) { |
| 1847 n = CHILD(n, 0); | |
| 1848 goto loop; | |
| 1849 } | |
|
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1850 return ast_for_factor(c, n); |
|
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|
1851 case power: |
|
842caa245917
Refactor code for translating "power" nodes.
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|
1852 return ast_for_power(c, n); |
| 35742 | 1853 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
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parents:
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diff
changeset
|
1854 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1855 return NULL; |
| 1856 } | |
|
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|
1857 /* should never get here unless if error is set */ |
| 35742 | 1858 return NULL; |
| 1859 } | |
| 1860 | |
| 1861 static expr_ty | |
| 1862 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1863 { | |
| 1864 /* | |
| 1865 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1866 | '**' test) | |
|
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|
1867 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1868 */ |
| 1869 | |
| 1870 int i, nargs, nkeywords, ngens; | |
|
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|
1871 asdl_seq *args; |
|
de16a85c3b4c
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|
1872 asdl_seq *keywords; |
| 35742 | 1873 expr_ty vararg = NULL, kwarg = NULL; |
| 1874 | |
| 1875 REQ(n, arglist); | |
| 1876 | |
| 1877 nargs = 0; | |
| 1878 nkeywords = 0; | |
| 1879 ngens = 0; | |
| 1880 for (i = 0; i < NCH(n); i++) { | |
|
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1881 node *ch = CHILD(n, i); |
|
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|
1882 if (TYPE(ch) == argument) { |
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|
1883 if (NCH(ch) == 1) |
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|
1884 nargs++; |
|
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|
1885 else if (TYPE(CHILD(ch, 1)) == comp_for) |
|
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|
1886 ngens++; |
| 35742 | 1887 else |
|
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1888 nkeywords++; |
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|
1889 } |
| 35742 | 1890 } |
| 1891 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
36418
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36242
diff
changeset
|
1892 ast_error(n, "Generator expression must be parenthesized " |
|
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|
1893 "if not sole argument"); |
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|
1894 return NULL; |
| 35742 | 1895 } |
| 1896 | |
| 1897 if (nargs + nkeywords + ngens > 255) { | |
| 1898 ast_error(n, "more than 255 arguments"); | |
| 1899 return NULL; | |
| 1900 } | |
| 1901 | |
|
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|
1902 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1903 if (!args) |
|
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|
1904 return NULL; |
|
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|
1905 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1906 if (!keywords) |
|
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|
1907 return NULL; |
| 35742 | 1908 nargs = 0; |
| 1909 nkeywords = 0; | |
| 1910 for (i = 0; i < NCH(n); i++) { | |
|
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1911 node *ch = CHILD(n, i); |
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|
1912 if (TYPE(ch) == argument) { |
|
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1913 expr_ty e; |
|
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1914 if (NCH(ch) == 1) { |
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|
1915 if (nkeywords) { |
|
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|
1916 ast_error(CHILD(ch, 0), |
|
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|
1917 "non-keyword arg after keyword arg"); |
|
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1918 return NULL; |
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|
1919 } |
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|
1920 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1921 if (!e) |
|
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ea083efdc96c
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|
1922 return NULL; |
|
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|
1923 asdl_seq_SET(args, nargs++, e); |
|
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|
1924 } |
|
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|
1925 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
|
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|
1926 e = ast_for_genexp(c, ch); |
| 35742 | 1927 if (!e) |
|
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|
1928 return NULL; |
|
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1929 asdl_seq_SET(args, nargs++, e); |
| 35742 | 1930 } |
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1931 else { |
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1932 keyword_ty kw; |
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1933 identifier key; |
| 35742 | 1934 |
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1935 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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1936 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1937 if (!e) |
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1938 return NULL; |
| 35742 | 1939 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1940 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 1941 * SF bug 132313 points out that complaining about a keyword | |
| 1942 * then is very confusing. | |
| 1943 */ | |
| 1944 if (e->kind == Lambda_kind) { | |
| 1945 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
|
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1946 return NULL; |
| 35742 | 1947 } else if (e->kind != Name_kind) { |
| 1948 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
|
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1949 return NULL; |
|
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1950 } else if (forbidden_name(e, ch)) { |
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1951 return NULL; |
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1952 } |
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1953 key = e->v.Name.id; |
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1954 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 1955 if (!e) |
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1956 return NULL; |
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1957 kw = keyword(key, e, c->c_arena); |
| 35742 | 1958 if (!kw) |
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1959 return NULL; |
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1960 asdl_seq_SET(keywords, nkeywords++, kw); |
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1961 } |
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1962 } |
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1963 else if (TYPE(ch) == STAR) { |
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1964 vararg = ast_for_expr(c, CHILD(n, i+1)); |
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1965 i++; |
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1966 } |
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1967 else if (TYPE(ch) == DOUBLESTAR) { |
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1968 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
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1969 i++; |
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1970 } |
| 35742 | 1971 } |
| 1972 | |
|
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1973 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 1974 } |
| 1975 | |
| 1976 static expr_ty | |
|
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1977 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 1978 { |
|
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1979 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
|
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1980 /* testlist: test (',' test)* [','] */ |
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1981 /* testlist1: test (',' test)* */ |
| 35742 | 1982 assert(NCH(n) > 0); |
|
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1983 if (TYPE(n) == testlist_comp) { |
|
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1984 if (NCH(n) > 1) |
|
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1985 assert(TYPE(CHILD(n, 1)) != comp_for); |
|
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1986 } |
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1987 else { |
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1988 assert(TYPE(n) == testlist || |
|
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1989 TYPE(n) == testlist1); |
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1990 } |
| 35742 | 1991 if (NCH(n) == 1) |
|
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1992 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 1993 else { |
| 1994 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 1995 if (!tmp) | |
| 1996 return NULL; | |
|
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1997 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1998 } |
|
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1999 } |
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2000 |
| 35742 | 2001 static stmt_ty |
| 2002 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2003 { | |
| 2004 REQ(n, expr_stmt); | |
| 2005 /* expr_stmt: testlist (augassign (yield_expr|testlist) | |
| 2006 | ('=' (yield_expr|testlist))*) | |
| 2007 testlist: test (',' test)* [','] | |
| 2008 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | |
|
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2009 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2010 test: ... here starts the operator precendence dance |
| 2011 */ | |
| 2012 | |
| 2013 if (NCH(n) == 1) { | |
|
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2014 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2015 if (!e) |
| 2016 return NULL; | |
| 2017 | |
|
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2018 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2019 } |
| 2020 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2021 expr_ty expr1, expr2; | |
|
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|
2022 operator_ty newoperator; |
|
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|
2023 node *ch = CHILD(n, 0); |
| 35742 | 2024 |
|
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2025 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2026 if (!expr1) |
| 2027 return NULL; | |
|
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|
2028 /* TODO(nas): Remove duplicated error checks (set_context does it) */ |
|
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|
2029 switch (expr1->kind) { |
|
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Improved handling of syntax errors.
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|
2030 case GeneratorExp_kind: |
|
a625e8876407
Improved handling of syntax errors.
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|
2031 ast_error(ch, "augmented assignment to generator " |
|
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Improved handling of syntax errors.
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|
2032 "expression not possible"); |
|
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|
2033 return NULL; |
|
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|
2034 case Yield_kind: |
|
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|
2035 ast_error(ch, "augmented assignment to yield " |
|
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|
2036 "expression not possible"); |
|
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|
2037 return NULL; |
|
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|
2038 case Name_kind: { |
|
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|
2039 if (forbidden_name(expr1, ch)) |
|
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|
2040 return NULL; |
|
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|
2041 break; |
|
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|
2042 } |
|
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|
2043 case Attribute_kind: |
|
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|
2044 case Subscript_kind: |
|
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|
2045 break; |
|
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|
2046 default: |
|
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|
2047 ast_error(ch, "illegal expression for augmented " |
|
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|
2048 "assignment"); |
|
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2049 return NULL; |
| 35742 | 2050 } |
|
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2051 set_context(expr1, Store, ch); |
| 35742 | 2052 |
|
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2053 ch = CHILD(n, 2); |
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2054 if (TYPE(ch) == testlist) |
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|
2055 expr2 = ast_for_testlist(c, ch); |
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|
2056 else |
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|
2057 expr2 = ast_for_expr(c, ch); |
|
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|
2058 if (!expr2) |
| 35742 | 2059 return NULL; |
| 2060 | |
|
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|
2061 newoperator = ast_for_augassign(CHILD(n, 1)); |
|
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|
2062 if (!newoperator) |
| 35742 | 2063 return NULL; |
| 2064 | |
|
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|
2065 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2066 } |
| 2067 else { | |
|
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|
2068 int i; |
|
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|
2069 asdl_seq *targets; |
|
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|
2070 node *value; |
| 35742 | 2071 expr_ty expression; |
| 2072 | |
|
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|
2073 /* a normal assignment */ |
|
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|
2074 REQ(CHILD(n, 1), EQUAL); |
|
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|
2075 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
|
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|
2076 if (!targets) |
|
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2077 return NULL; |
|
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|
2078 for (i = 0; i < NCH(n) - 2; i += 2) { |
|
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|
2079 expr_ty e; |
|
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|
2080 node *ch = CHILD(n, i); |
|
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|
2081 if (TYPE(ch) == yield_expr) { |
|
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|
2082 ast_error(ch, "assignment to yield expression not possible"); |
|
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2083 return NULL; |
|
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|
2084 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2085 e = ast_for_testlist(c, ch); |
| 35742 | 2086 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2087 /* set context to assign */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2088 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2089 return NULL; |
| 35742 | 2090 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2091 if (!set_context(e, Store, CHILD(n, i))) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2092 return NULL; |
| 35742 | 2093 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2094 asdl_seq_SET(targets, i / 2, e); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2095 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2096 value = CHILD(n, NCH(n) - 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2097 if (TYPE(value) == testlist) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2098 expression = ast_for_testlist(c, value); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2099 else |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2100 expression = ast_for_expr(c, value); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2101 if (!expression) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2102 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2103 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2104 } |
| 2105 } | |
| 2106 | |
| 2107 static asdl_seq * | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2108 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2109 { |
| 2110 asdl_seq *seq; | |
| 2111 int i; | |
| 2112 expr_ty e; | |
| 2113 | |
| 2114 REQ(n, exprlist); | |
| 2115 | |
|
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
|
2116 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2117 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2118 return NULL; |
| 35742 | 2119 for (i = 0; i < NCH(n); i += 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2120 e = ast_for_expr(c, CHILD(n, i)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2121 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2122 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2123 asdl_seq_SET(seq, i / 2, e); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2124 if (context && !set_context(e, context, CHILD(n, i))) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2125 return NULL; |
| 35742 | 2126 } |
| 2127 return seq; | |
| 2128 } | |
| 2129 | |
| 2130 static stmt_ty | |
| 2131 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2132 { | |
| 2133 asdl_seq *expr_list; | |
| 2134 | |
| 2135 /* del_stmt: 'del' exprlist */ | |
| 2136 REQ(n, del_stmt); | |
| 2137 | |
| 2138 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2139 if (!expr_list) | |
| 2140 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2141 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2142 } |
| 2143 | |
| 2144 static stmt_ty | |
| 2145 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2146 { | |
| 2147 /* | |
| 2148 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2149 | yield_stmt | |
| 2150 break_stmt: 'break' | |
| 2151 continue_stmt: 'continue' | |
| 2152 return_stmt: 'return' [testlist] | |
| 2153 yield_stmt: yield_expr | |
| 2154 yield_expr: 'yield' testlist | |
| 2155 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2156 */ | |
| 2157 node *ch; | |
| 2158 | |
| 2159 REQ(n, flow_stmt); | |
| 2160 ch = CHILD(n, 0); | |
| 2161 switch (TYPE(ch)) { | |
| 2162 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
|
2163 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2164 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
|
2165 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2166 case yield_stmt: { /* will reduce to yield_expr */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2167 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2168 if (!exp) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2169 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2170 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2171 } |
| 2172 case return_stmt: | |
| 2173 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
|
2174 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2175 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2176 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2177 if (!expression) |
| 2178 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2179 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2180 } |
| 2181 case raise_stmt: | |
| 2182 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
|
2183 return Raise(NULL, NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2184 else if (NCH(ch) == 2) { |
| 2185 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); | |
| 2186 if (!expression) | |
| 2187 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2188 return Raise(expression, NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2189 } |
| 2190 else if (NCH(ch) == 4) { | |
| 2191 expr_ty expr1, expr2; | |
| 2192 | |
| 2193 expr1 = ast_for_expr(c, CHILD(ch, 1)); | |
| 2194 if (!expr1) | |
| 2195 return NULL; | |
| 2196 expr2 = ast_for_expr(c, CHILD(ch, 3)); | |
| 2197 if (!expr2) | |
| 2198 return NULL; | |
| 2199 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2200 return Raise(expr1, expr2, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2201 } |
| 2202 else if (NCH(ch) == 6) { | |
| 2203 expr_ty expr1, expr2, expr3; | |
| 2204 | |
| 2205 expr1 = ast_for_expr(c, CHILD(ch, 1)); | |
| 2206 if (!expr1) | |
| 2207 return NULL; | |
| 2208 expr2 = ast_for_expr(c, CHILD(ch, 3)); | |
| 2209 if (!expr2) | |
| 2210 return NULL; | |
| 2211 expr3 = ast_for_expr(c, CHILD(ch, 5)); | |
| 2212 if (!expr3) | |
| 2213 return NULL; | |
| 2214 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2215 return Raise(expr1, expr2, expr3, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2216 } |
| 2217 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2218 PyErr_Format(PyExc_SystemError, |
| 35742 | 2219 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2220 return NULL; | |
| 2221 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2222 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2223 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
|
2224 return NULL; |
| 35742 | 2225 } |
| 2226 | |
| 2227 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
|
2228 alias_for_import_name(struct compiling *c, const node *n) |
| 35742 | 2229 { |
| 2230 /* | |
|
36742
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
36718
diff
changeset
|
2231 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
|
2232 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2233 dotted_name: NAME ('.' NAME)* |
| 2234 */ | |
|
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
|
2235 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
|
2236 |
| 35742 | 2237 loop: |
| 2238 switch (TYPE(n)) { | |
| 2239 case import_as_name: | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2240 str = NULL; |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2241 if (NCH(n) == 3) { |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2242 str = NEW_IDENTIFIER(CHILD(n, 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2243 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2244 return alias(NEW_IDENTIFIER(CHILD(n, 0)), str, c->c_arena); |
| 35742 | 2245 case dotted_as_name: |
| 2246 if (NCH(n) == 1) { | |
| 2247 n = CHILD(n, 0); | |
| 2248 goto loop; | |
| 2249 } | |
| 2250 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
|
2251 alias_ty a = alias_for_import_name(c, CHILD(n, 0)); |
|
39610
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2252 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2253 return NULL; |
| 35742 | 2254 assert(!a->asname); |
| 2255 a->asname = NEW_IDENTIFIER(CHILD(n, 2)); | |
| 2256 return a; | |
| 2257 } | |
| 2258 break; | |
| 2259 case dotted_name: | |
| 2260 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
|
2261 return alias(NEW_IDENTIFIER(CHILD(n, 0)), NULL, c->c_arena); |
| 35742 | 2262 else { |
| 2263 /* 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
|
2264 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2265 size_t len; |
| 35742 | 2266 char *s; |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2267 PyObject *uni; |
| 35742 | 2268 |
| 2269 len = 0; | |
| 2270 for (i = 0; i < NCH(n); i += 2) | |
| 2271 /* length of string plus one for the dot */ | |
| 2272 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2273 len--; /* the last name doesn't have a dot */ | |
| 2274 str = PyString_FromStringAndSize(NULL, len); | |
| 2275 if (!str) | |
| 2276 return NULL; | |
| 2277 s = PyString_AS_STRING(str); | |
| 2278 if (!s) | |
| 2279 return NULL; | |
| 2280 for (i = 0; i < NCH(n); i += 2) { | |
| 2281 char *sch = STR(CHILD(n, i)); | |
| 2282 strcpy(s, STR(CHILD(n, i))); | |
| 2283 s += strlen(sch); | |
| 2284 *s++ = '.'; | |
| 2285 } | |
| 2286 --s; | |
| 2287 *s = '\0'; | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2288 uni = PyUnicode_DecodeUTF8(PyString_AS_STRING(str), |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2289 PyString_GET_SIZE(str), |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2290 NULL); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2291 Py_DECREF(str); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2292 if (!uni) |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2293 return NULL; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2294 str = uni; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2295 PyUnicode_InternInPlace(&str); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2296 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2297 return alias(str, NULL, c->c_arena); |
| 35742 | 2298 } |
| 2299 break; | |
| 2300 case STAR: | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2301 str = PyUnicode_InternFromString("*"); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2302 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2303 return alias(str, NULL, c->c_arena); |
| 35742 | 2304 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2305 PyErr_Format(PyExc_SystemError, |
| 35742 | 2306 "unexpected import name: %d", TYPE(n)); |
| 2307 return NULL; | |
| 2308 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2309 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2310 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2311 return NULL; |
| 2312 } | |
| 2313 | |
| 2314 static stmt_ty | |
| 2315 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2316 { | |
| 2317 /* | |
| 2318 import_stmt: import_name | import_from | |
| 2319 import_name: 'import' dotted_as_names | |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2320 import_from: 'from' (('.' | '...')* dotted_name | ('.' | '...')+) |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2321 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2322 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2323 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2324 int col_offset; |
| 35742 | 2325 int i; |
| 2326 asdl_seq *aliases; | |
| 2327 | |
| 2328 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
|
2329 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2330 col_offset = n->n_col_offset; |
| 35742 | 2331 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2332 if (TYPE(n) == import_name) { |
| 35742 | 2333 n = CHILD(n, 1); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2334 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2335 aliases = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2336 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2337 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2338 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
|
2339 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
|
2340 if (!import_alias) |
| 35742 | 2341 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2342 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2343 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2344 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2345 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2346 else if (TYPE(n) == import_from) { |
| 35742 | 2347 int n_children; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2348 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2349 alias_ty mod = NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2350 identifier modname; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2351 |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2352 /* 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
|
2353 optional module name */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2354 for (idx = 1; idx < NCH(n); idx++) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2355 if (TYPE(CHILD(n, idx)) == dotted_name) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2356 mod = alias_for_import_name(c, CHILD(n, idx)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2357 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2358 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2359 } else if (TYPE(CHILD(n, idx)) == ELLIPSIS) { |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2360 /* three consecutive dots are tokenized as one ELLIPSIS */ |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2361 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2362 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2363 } else if (TYPE(CHILD(n, idx)) != DOT) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2364 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2365 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2366 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2367 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2368 idx++; /* skip over the 'import' keyword */ |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2369 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2370 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2371 /* from ... import * */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2372 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2373 n_children = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2374 if (ndots) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2375 ast_error(n, "'import *' not allowed with 'from .'"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2376 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2377 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2378 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2379 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2380 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2381 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2382 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2383 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2384 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2385 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2386 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2387 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2388 if (n_children % 2 == 0) { |
| 35742 | 2389 ast_error(n, "trailing comma not allowed without" |
| 2390 " surrounding parentheses"); | |
| 2391 return NULL; | |
| 2392 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2393 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2394 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2395 ast_error(n, "Unexpected node-type in from-import"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2396 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2397 } |
| 35742 | 2398 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2399 aliases = asdl_seq_new((n_children + 1) / 2, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2400 if (!aliases) |
| 35742 | 2401 return NULL; |
| 2402 | |
| 2403 /* 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
|
2404 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
|
2405 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
|
2406 if (!import_alias) |
| 35742 | 2407 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2408 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2409 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2410 else { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2411 for (i = 0; i < NCH(n); i += 2) { |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2412 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
|
2413 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2414 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2415 asdl_seq_SET(aliases, i / 2, import_alias); |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2416 } |
| 35742 | 2417 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2418 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2419 modname = mod->name; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2420 else |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2421 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
|
2422 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
|
2423 c->c_arena); |
| 35742 | 2424 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2425 PyErr_Format(PyExc_SystemError, |
| 35742 | 2426 "unknown import statement: starts with command '%s'", |
| 2427 STR(CHILD(n, 0))); | |
| 2428 return NULL; | |
| 2429 } | |
| 2430 | |
| 2431 static stmt_ty | |
| 2432 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2433 { | |
| 2434 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2435 identifier name; | |
| 2436 asdl_seq *s; | |
| 2437 int i; | |
| 2438 | |
| 2439 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
|
2440 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2441 if (!s) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2442 return NULL; |
| 35742 | 2443 for (i = 1; i < NCH(n); i += 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2444 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2445 if (!name) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2446 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2447 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2448 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2449 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2450 } |
| 2451 | |
| 2452 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2453 ast_for_nonlocal_stmt(struct compiling *c, const node *n) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2454 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2455 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2456 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2457 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2458 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2459 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2460 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2461 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2462 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2463 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2464 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2465 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2466 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2467 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2468 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2469 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2470 return Nonlocal(s, LINENO(n), n->n_col_offset, c->c_arena); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2471 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2472 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2473 static stmt_ty |
| 35742 | 2474 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2475 { | |
| 2476 /* assert_stmt: 'assert' test [',' test] */ | |
| 2477 REQ(n, assert_stmt); | |
| 2478 if (NCH(n) == 2) { | |
| 2479 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2480 if (!expression) | |
| 2481 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2482 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2483 } |
| 2484 else if (NCH(n) == 4) { | |
| 2485 expr_ty expr1, expr2; | |
| 2486 | |
| 2487 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2488 if (!expr1) | |
| 2489 return NULL; | |
| 2490 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2491 if (!expr2) | |
| 2492 return NULL; | |
| 2493 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2494 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2495 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2496 PyErr_Format(PyExc_SystemError, |
| 35742 | 2497 "improper number of parts to 'assert' statement: %d", |
| 2498 NCH(n)); | |
| 2499 return NULL; | |
| 2500 } | |
| 2501 | |
| 2502 static asdl_seq * | |
| 2503 ast_for_suite(struct compiling *c, const node *n) | |
| 2504 { | |
| 2505 /* 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
|
2506 asdl_seq *seq; |
| 35742 | 2507 stmt_ty s; |
| 2508 int i, total, num, end, pos = 0; | |
| 2509 node *ch; | |
| 2510 | |
| 2511 REQ(n, suite); | |
| 2512 | |
| 2513 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
|
2514 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2515 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2516 return NULL; |
| 35742 | 2517 if (TYPE(CHILD(n, 0)) == simple_stmt) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2518 n = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2519 /* simple_stmt always ends with a NEWLINE, |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2520 and may have a trailing SEMI |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2521 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2522 end = NCH(n) - 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2523 if (TYPE(CHILD(n, end - 1)) == SEMI) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2524 end--; |
| 35742 | 2525 /* loop by 2 to skip semi-colons */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2526 for (i = 0; i < end; i += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2527 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2528 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2529 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2530 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2531 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2532 } |
| 35742 | 2533 } |
| 2534 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2535 for (i = 2; i < (NCH(n) - 1); i++) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2536 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2537 REQ(ch, stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2538 num = num_stmts(ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2539 if (num == 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2540 /* small_stmt or compound_stmt with only one child */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2541 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2542 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2543 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2544 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2545 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2546 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2547 int j; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2548 ch = CHILD(ch, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2549 REQ(ch, simple_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2550 for (j = 0; j < NCH(ch); j += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2551 /* statement terminates with a semi-colon ';' */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2552 if (NCH(CHILD(ch, j)) == 0) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2553 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2554 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2555 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2556 s = ast_for_stmt(c, CHILD(ch, j)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2557 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2558 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2559 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2560 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2561 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2562 } |
| 35742 | 2563 } |
| 2564 assert(pos == seq->size); | |
| 2565 return seq; | |
| 2566 } | |
| 2567 | |
| 2568 static stmt_ty | |
| 2569 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2570 { | |
| 2571 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2572 ['else' ':' suite] | |
| 2573 */ | |
| 2574 char *s; | |
| 2575 | |
| 2576 REQ(n, if_stmt); | |
| 2577 | |
| 2578 if (NCH(n) == 4) { | |
| 2579 expr_ty expression; | |
| 2580 asdl_seq *suite_seq; | |
| 2581 | |
| 2582 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2583 if (!expression) | |
| 2584 return NULL; | |
| 2585 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
|
2586 if (!suite_seq) |
| 35742 | 2587 return NULL; |
| 2588 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2589 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2590 c->c_arena); |
| 35742 | 2591 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2592 |
| 35742 | 2593 s = STR(CHILD(n, 4)); |
| 2594 /* s[2], the third character in the string, will be | |
| 2595 's' for el_s_e, or | |
| 2596 'i' for el_i_f | |
| 2597 */ | |
| 2598 if (s[2] == 's') { | |
| 2599 expr_ty expression; | |
| 2600 asdl_seq *seq1, *seq2; | |
| 2601 | |
| 2602 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2603 if (!expression) | |
| 2604 return NULL; | |
| 2605 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
|
2606 if (!seq1) |
| 35742 | 2607 return NULL; |
| 2608 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
|
2609 if (!seq2) |
| 35742 | 2610 return NULL; |
| 2611 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2612 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
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Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2613 c->c_arena); |
| 35742 | 2614 } |
| 2615 else if (s[2] == 'i') { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2616 int i, n_elif, has_else = 0; |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
2617 expr_ty expression; |
|
06145fbc7ab9
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parents:
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diff
changeset
|
2618 asdl_seq *suite_seq; |
|
40450
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parents:
40215
diff
changeset
|
2619 asdl_seq *orelse = NULL; |
|
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parents:
40215
diff
changeset
|
2620 n_elif = NCH(n) - 4; |
| 35742 | 2621 /* must reference the child n_elif+1 since 'else' token is third, |
| 2622 not fourth, child from the end. */ | |
|
40450
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diff
changeset
|
2623 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
2624 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
2625 has_else = 1; |
|
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parents:
40215
diff
changeset
|
2626 n_elif -= 3; |
|
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parents:
40215
diff
changeset
|
2627 } |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
2628 n_elif /= 4; |
| 35742 | 2629 |
|
40450
cc992d75d5b3
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parents:
40215
diff
changeset
|
2630 if (has_else) { |
|
41554
06145fbc7ab9
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parents:
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diff
changeset
|
2631 asdl_seq *suite_seq2; |
| 35742 | 2632 |
|
40450
cc992d75d5b3
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parents:
40215
diff
changeset
|
2633 orelse = asdl_seq_new(1, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2634 if (!orelse) |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
2635 return NULL; |
| 35742 | 2636 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
|
2637 if (!expression) |
| 35742 | 2638 return NULL; |
|
41554
06145fbc7ab9
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parents:
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diff
changeset
|
2639 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
06145fbc7ab9
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diff
changeset
|
2640 if (!suite_seq) |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2641 return NULL; |
|
41554
06145fbc7ab9
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parents:
41509
diff
changeset
|
2642 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
2643 if (!suite_seq2) |
| 35742 | 2644 return NULL; |
| 2645 | |
|
41554
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|
2646 asdl_seq_SET(orelse, 0, |
|
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|
2647 If(expression, suite_seq, suite_seq2, |
|
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|
2648 LINENO(CHILD(n, NCH(n) - 6)), |
|
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|
2649 CHILD(n, NCH(n) - 6)->n_col_offset, |
|
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|
2650 c->c_arena)); |
|
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|
2651 /* the just-created orelse handled the last elif */ |
|
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|
2652 n_elif--; |
|
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|
2653 } |
| 35742 | 2654 |
|
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|
2655 for (i = 0; i < n_elif; i++) { |
|
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Four months of trunk changes (including a few releases...)
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|
2656 int off = 5 + (n_elif - i - 1) * 4; |
|
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|
2657 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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|
2658 if (!newobj) |
|
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|
2659 return NULL; |
| 35742 | 2660 expression = ast_for_expr(c, CHILD(n, off)); |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2661 if (!expression) |
| 35742 | 2662 return NULL; |
| 2663 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2664 if (!suite_seq) |
| 35742 | 2665 return NULL; |
| 2666 | |
|
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|
2667 asdl_seq_SET(newobj, 0, |
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2668 If(expression, suite_seq, orelse, |
|
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|
2669 LINENO(CHILD(n, off)), |
|
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|
2670 CHILD(n, off)->n_col_offset, c->c_arena)); |
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|
2671 orelse = newobj; |
|
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|
2672 } |
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|
2673 expression = ast_for_expr(c, CHILD(n, 1)); |
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|
2674 if (!expression) |
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|
2675 return NULL; |
|
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|
2676 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
|
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|
2677 if (!suite_seq) |
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|
2678 return NULL; |
|
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|
2679 return If(expression, suite_seq, orelse, |
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|
2680 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2681 } |
|
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|
2682 |
|
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Cleanup a bit and make things more consistent.
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|
2683 PyErr_Format(PyExc_SystemError, |
|
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Cleanup a bit and make things more consistent.
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|
2684 "unexpected token in 'if' statement: %s", s); |
|
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Cleanup a bit and make things more consistent.
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diff
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|
2685 return NULL; |
| 35742 | 2686 } |
| 2687 | |
| 2688 static stmt_ty | |
| 2689 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2690 { | |
| 2691 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2692 REQ(n, while_stmt); | |
| 2693 | |
| 2694 if (NCH(n) == 4) { | |
| 2695 expr_ty expression; | |
| 2696 asdl_seq *suite_seq; | |
| 2697 | |
| 2698 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2699 if (!expression) | |
| 2700 return NULL; | |
| 2701 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2702 if (!suite_seq) |
| 35742 | 2703 return NULL; |
|
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|
2704 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2705 } |
| 2706 else if (NCH(n) == 7) { | |
| 2707 expr_ty expression; | |
| 2708 asdl_seq *seq1, *seq2; | |
| 2709 | |
| 2710 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2711 if (!expression) | |
| 2712 return NULL; | |
| 2713 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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Cleanup a bit and make things more consistent.
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|
2714 if (!seq1) |
| 35742 | 2715 return NULL; |
| 2716 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2717 if (!seq2) |
| 35742 | 2718 return NULL; |
| 2719 | |
|
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|
2720 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2721 } |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2722 |
|
de16a85c3b4c
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changeset
|
2723 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
2724 "wrong number of tokens for 'while' statement: %d", |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2725 NCH(n)); |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2726 return NULL; |
| 35742 | 2727 } |
| 2728 | |
| 2729 static stmt_ty | |
| 2730 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2731 { | |
|
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|
2732 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2733 expr_ty expression; |
| 2734 expr_ty target; | |
|
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|
2735 const node *node_target; |
| 35742 | 2736 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2737 REQ(n, for_stmt); | |
| 2738 | |
| 2739 if (NCH(n) == 9) { | |
|
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|
2740 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2741 if (!seq) |
| 2742 return NULL; | |
| 2743 } | |
| 2744 | |
|
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|
2745 node_target = CHILD(n, 1); |
|
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|
2746 _target = ast_for_exprlist(c, node_target, Store); |
|
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|
2747 if (!_target) |
| 35742 | 2748 return NULL; |
|
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|
2749 /* Check the # of children rather than the length of _target, since |
|
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|
2750 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2751 if (NCH(node_target) == 1) |
|
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|
2752 target = (expr_ty)asdl_seq_GET(_target, 0); |
| 35742 | 2753 else |
|
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|
2754 target = Tuple(_target, Store, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2755 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2756 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2757 if (!expression) |
| 35742 | 2758 return NULL; |
| 2759 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
2760 if (!suite_seq) |
| 35742 | 2761 return NULL; |
| 2762 | |
|
37879
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2763 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2764 c->c_arena); |
| 35742 | 2765 } |
| 2766 | |
| 2767 static excepthandler_ty | |
| 2768 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2769 { | |
|
41824
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changeset
|
2770 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2771 REQ(exc, except_clause); |
| 2772 REQ(body, suite); | |
| 2773 | |
| 2774 if (NCH(exc) == 1) { | |
| 2775 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2776 if (!suite_seq) | |
| 2777 return NULL; | |
| 2778 | |
|
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|
2779 return excepthandler(NULL, NULL, suite_seq, LINENO(exc), |
|
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f731859e9b3b
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diff
changeset
|
2780 exc->n_col_offset, c->c_arena); |
| 35742 | 2781 } |
| 2782 else if (NCH(exc) == 2) { | |
| 2783 expr_ty expression; | |
| 2784 asdl_seq *suite_seq; | |
| 2785 | |
| 2786 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2787 if (!expression) | |
| 2788 return NULL; | |
| 2789 suite_seq = ast_for_suite(c, body); | |
|
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parents:
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diff
changeset
|
2790 if (!suite_seq) |
| 35742 | 2791 return NULL; |
| 2792 | |
|
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|
2793 return excepthandler(expression, NULL, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
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diff
changeset
|
2794 exc->n_col_offset, c->c_arena); |
| 35742 | 2795 } |
| 2796 else if (NCH(exc) == 4) { | |
| 2797 asdl_seq *suite_seq; | |
| 2798 expr_ty expression; | |
|
40588
4bab65fcca8e
Some more changes related to the new except syntax and semantics,
Guido van Rossum <guido@python.org>
parents:
40529
diff
changeset
|
2799 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
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|
2800 if (!e) |
| 35742 | 2801 return NULL; |
|
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|
2802 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
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parents:
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changeset
|
2803 if (!expression) |
|
de16a85c3b4c
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diff
changeset
|
2804 return NULL; |
| 35742 | 2805 suite_seq = ast_for_suite(c, body); |
|
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diff
changeset
|
2806 if (!suite_seq) |
| 35742 | 2807 return NULL; |
| 2808 | |
|
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|
2809 return excepthandler(expression, e, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2810 exc->n_col_offset, c->c_arena); |
| 35742 | 2811 } |
|
36072
de16a85c3b4c
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diff
changeset
|
2812 |
|
de16a85c3b4c
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diff
changeset
|
2813 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
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parents:
36066
diff
changeset
|
2814 "wrong number of children for 'except' clause: %d", |
|
de16a85c3b4c
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36066
diff
changeset
|
2815 NCH(exc)); |
|
de16a85c3b4c
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36066
diff
changeset
|
2816 return NULL; |
| 35742 | 2817 } |
| 2818 | |
| 2819 static stmt_ty | |
| 2820 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2821 { | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2822 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
|
2823 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
|
2824 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
|
2825 |
| 35742 | 2826 REQ(n, try_stmt); |
| 2827 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2828 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
|
2829 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
|
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 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2832 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
|
2833 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
|
2834 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
|
2835 /* 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
|
2836 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
|
2837 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
|
2838 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
|
2839 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
|
2840 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2841 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2842 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2843 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2844 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
|
2845 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
|
2846 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2847 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2848 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2849 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2850 /* 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
|
2851 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
|
2852 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
|
2853 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
|
2854 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2855 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2856 } |
| 35742 | 2857 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2858 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
|
2859 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2860 return NULL; |
| 2861 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2862 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2863 if (n_except > 0) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2864 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2865 stmt_ty except_st; |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2866 /* 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
|
2867 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
|
2868 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
|
2869 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2870 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2871 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
|
2872 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
|
2873 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
|
2874 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2875 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2876 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
|
2877 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2878 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2879 except_st = TryExcept(body, handlers, orelse, LINENO(n), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2880 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
|
2881 if (!finally) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2882 return except_st; |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2883 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2884 /* 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
|
2885 TryFinally to emulate try ... except ... finally */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2886 body = asdl_seq_new(1, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2887 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2888 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2889 asdl_seq_SET(body, 0, except_st); |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2890 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2891 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2892 /* 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
|
2893 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
|
2894 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2895 } |
| 2896 | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2897 static expr_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2898 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
|
2899 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2900 REQ(n, with_var); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2901 return ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2902 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2903 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2904 /* with_stmt: 'with' test [ with_var ] ':' suite */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2905 static stmt_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2906 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
|
2907 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2908 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2909 int suite_index = 3; /* skip 'with', test, and ':' */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2910 asdl_seq *suite_seq; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2911 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2912 assert(TYPE(n) == with_stmt); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2913 context_expr = ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2914 if (TYPE(CHILD(n, 2)) == with_var) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2915 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
|
2916 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2917 if (!optional_vars) { |
|
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 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2920 if (!set_context(optional_vars, Store, n)) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2921 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2922 } |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2923 suite_index = 4; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2924 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2925 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2926 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
|
2927 if (!suite_seq) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2928 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2929 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2930 return With(context_expr, optional_vars, suite_seq, LINENO(n), |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2931 n->n_col_offset, c->c_arena); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2932 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2933 |
| 35742 | 2934 static stmt_ty |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2935 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 2936 { |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2937 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2938 asdl_seq *s; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2939 expr_ty call, dummy; |
|
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parents:
40965
diff
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|
2940 |
| 35742 | 2941 REQ(n, classdef); |
| 2942 | |
|
41226
19f7ff443718
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Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2943 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 2944 s = ast_for_suite(c, CHILD(n, 3)); |
| 2945 if (!s) | |
| 2946 return NULL; | |
|
41226
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Implement PEP 3115 -- new metaclass syntax and semantics.
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parents:
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diff
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|
2947 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
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|
2948 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2949 } |
|
41226
19f7ff443718
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Guido van Rossum <guido@python.org>
parents:
40965
diff
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|
2950 |
|
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Implement PEP 3115 -- new metaclass syntax and semantics.
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parents:
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diff
changeset
|
2951 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
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|
2952 s = ast_for_suite(c, CHILD(n,5)); |
|
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|
2953 if (!s) |
|
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|
2954 return NULL; |
|
41226
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parents:
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|
2955 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
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|
2956 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2957 } |
| 2958 | |
|
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parents:
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|
2959 /* class NAME '(' arglist ')' ':' suite */ |
|
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parents:
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|
2960 /* build up a fake Call node so we can extract its pieces */ |
|
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parents:
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diff
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|
2961 dummy = Name(NEW_IDENTIFIER(CHILD(n, 1)), Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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Implement PEP 3115 -- new metaclass syntax and semantics.
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parents:
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diff
changeset
|
2962 call = ast_for_call(c, CHILD(n, 3), dummy); |
|
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Implement PEP 3115 -- new metaclass syntax and semantics.
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parents:
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diff
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|
2963 if (!call) |
| 35742 | 2964 return NULL; |
| 2965 s = ast_for_suite(c, CHILD(n, 6)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2966 if (!s) |
| 35742 | 2967 return NULL; |
|
41226
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|
2968 |
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parents:
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|
2969 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), |
|
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|
2970 call->v.Call.args, call->v.Call.keywords, |
|
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|
2971 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
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|
2972 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2973 } |
| 2974 | |
| 2975 static stmt_ty | |
| 2976 ast_for_stmt(struct compiling *c, const node *n) | |
| 2977 { | |
| 2978 if (TYPE(n) == stmt) { | |
|
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|
2979 assert(NCH(n) == 1); |
|
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|
2980 n = CHILD(n, 0); |
| 35742 | 2981 } |
| 2982 if (TYPE(n) == simple_stmt) { | |
|
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|
2983 assert(num_stmts(n) == 1); |
|
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|
2984 n = CHILD(n, 0); |
| 35742 | 2985 } |
| 2986 if (TYPE(n) == small_stmt) { | |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
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|
2987 REQ(n, small_stmt); |
|
54cd47788811
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|
2988 n = CHILD(n, 0); |
|
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Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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|
2989 /* small_stmt: expr_stmt | del_stmt | pass_stmt | flow_stmt |
|
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Provisional implementation of PEP 3104.
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|
2990 | import_stmt | global_stmt | nonlocal_stmt | assert_stmt |
|
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|
2991 */ |
|
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|
2992 switch (TYPE(n)) { |
| 35742 | 2993 case expr_stmt: |
| 2994 return ast_for_expr_stmt(c, n); | |
| 2995 case del_stmt: | |
| 2996 return ast_for_del_stmt(c, n); | |
| 2997 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
|
2998 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2999 case flow_stmt: |
| 3000 return ast_for_flow_stmt(c, n); | |
| 3001 case import_stmt: | |
| 3002 return ast_for_import_stmt(c, n); | |
| 3003 case global_stmt: | |
| 3004 return ast_for_global_stmt(c, n); | |
|
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Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
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|
3005 case nonlocal_stmt: |
|
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Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
3006 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3007 case assert_stmt: |
| 3008 return ast_for_assert_stmt(c, n); | |
| 3009 default: | |
|
35870
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Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
3010 PyErr_Format(PyExc_SystemError, |
| 35742 | 3011 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3012 TYPE(n), NCH(n)); | |
| 3013 return NULL; | |
| 3014 } | |
| 3015 } | |
| 3016 else { | |
| 3017 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
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|
3018 | funcdef | classdef | decorated |
|
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|
3019 */ |
|
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|
3020 node *ch = CHILD(n, 0); |
|
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|
3021 REQ(n, compound_stmt); |
|
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|
3022 switch (TYPE(ch)) { |
| 35742 | 3023 case if_stmt: |
| 3024 return ast_for_if_stmt(c, ch); | |
| 3025 case while_stmt: | |
| 3026 return ast_for_while_stmt(c, ch); | |
| 3027 case for_stmt: | |
| 3028 return ast_for_for_stmt(c, ch); | |
| 3029 case try_stmt: | |
| 3030 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
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|
3031 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3032 return ast_for_with_stmt(c, ch); |
| 35742 | 3033 case funcdef: |
|
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|
3034 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3035 case classdef: |
|
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|
3036 return ast_for_classdef(c, ch, NULL); |
|
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|
3037 case decorated: |
|
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|
3038 return ast_for_decorated(c, ch); |
| 35742 | 3039 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3040 PyErr_Format(PyExc_SystemError, |
| 35742 | 3041 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3042 TYPE(n), NCH(n)); | |
| 3043 return NULL; | |
|
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|
3044 } |
| 35742 | 3045 } |
| 3046 } | |
| 3047 | |
| 3048 static PyObject * | |
| 3049 parsenumber(const char *s) | |
| 3050 { | |
|
41554
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|
3051 const char *end; |
|
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|
3052 long x; |
|
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|
3053 double dx; |
| 35742 | 3054 #ifndef WITHOUT_COMPLEX |
|
41554
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|
3055 Py_complex c; |
|
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|
3056 int imflag; |
| 35742 | 3057 #endif |
| 3058 | |
|
41554
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|
3059 errno = 0; |
|
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|
3060 end = s + strlen(s) - 1; |
| 35742 | 3061 #ifndef WITHOUT_COMPLEX |
|
41554
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|
3062 imflag = *end == 'j' || *end == 'J'; |
| 35742 | 3063 #endif |
|
41554
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|
3064 if (s[0] == '0') { |
|
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|
3065 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
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|
3066 if (x < 0 && errno == 0) { |
|
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|
3067 return PyLong_FromString((char *)s, |
|
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|
3068 (char **)0, |
|
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|
3069 0); |
|
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|
3070 } |
|
41554
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|
3071 } |
|
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|
3072 else |
|
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|
3073 x = PyOS_strtol((char *)s, (char **)&end, 0); |
|
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|
3074 if (*end == '\0') { |
|
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|
3075 if (errno != 0) |
|
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|
3076 return PyLong_FromString((char *)s, (char **)0, 0); |
|
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|
3077 return PyInt_FromLong(x); |
|
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|
3078 } |
|
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|
3079 /* XXX Huge floats may silently fail */ |
| 35742 | 3080 #ifndef WITHOUT_COMPLEX |
|
41554
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|
3081 if (imflag) { |
|
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|
3082 c.real = 0.; |
|
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|
3083 PyFPE_START_PROTECT("atof", return 0) |
|
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|
3084 c.imag = PyOS_ascii_atof(s); |
|
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|
3085 PyFPE_END_PROTECT(c) |
|
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|
3086 return PyComplex_FromCComplex(c); |
|
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|
3087 } |
|
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|
3088 else |
| 35742 | 3089 #endif |
|
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|
3090 { |
|
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|
3091 PyFPE_START_PROTECT("atof", return 0) |
|
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|
3092 dx = PyOS_ascii_atof(s); |
|
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|
3093 PyFPE_END_PROTECT(dx) |
|
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|
3094 return PyFloat_FromDouble(dx); |
|
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|
3095 } |
| 35742 | 3096 } |
| 3097 | |
| 3098 static PyObject * | |
| 3099 decode_utf8(const char **sPtr, const char *end, char* encoding) | |
| 3100 { | |
|
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|
3101 PyObject *u, *v; |
|
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|
3102 char *s, *t; |
|
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|
3103 t = s = (char *)*sPtr; |
|
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|
3104 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
|
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|
3105 while (s < end && (*s & 0x80)) s++; |
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|
3106 *sPtr = s; |
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|
3107 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
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|
3108 if (u == NULL) |
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|
3109 return NULL; |
|
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|
3110 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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|
3111 Py_DECREF(u); |
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3112 return v; |
| 35742 | 3113 } |
| 3114 | |
| 3115 static PyObject * | |
| 3116 decode_unicode(const char *s, size_t len, int rawmode, const char *encoding) | |
| 3117 { | |
|
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3118 PyObject *v, *u; |
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3119 char *buf; |
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3120 char *p; |
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3121 const char *end; |
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3122 if (encoding == NULL) { |
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3123 buf = (char *)s; |
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3124 u = NULL; |
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3125 } else if (strcmp(encoding, "iso-8859-1") == 0) { |
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3126 buf = (char *)s; |
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3127 u = NULL; |
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3128 } else { |
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3129 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ |
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3130 u = PyString_FromStringAndSize((char *)NULL, len * 4); |
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3131 if (u == NULL) |
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3132 return NULL; |
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3133 p = buf = PyString_AsString(u); |
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3134 end = s + len; |
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3135 while (s < end) { |
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3136 if (*s == '\\') { |
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3137 *p++ = *s++; |
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3138 if (*s & 0x80) { |
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3139 strcpy(p, "u005c"); |
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3140 p += 5; |
|
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3141 } |
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3142 } |
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3143 if (*s & 0x80) { /* XXX inefficient */ |
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3144 PyObject *w; |
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3145 char *r; |
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3146 Py_ssize_t rn, i; |
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3147 w = decode_utf8(&s, end, "utf-16-be"); |
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3148 if (w == NULL) { |
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3149 Py_DECREF(u); |
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3150 return NULL; |
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3151 } |
|
41595
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3152 assert(PyBytes_Check(w)); |
|
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3153 r = PyBytes_AsString(w); |
|
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3154 rn = PyBytes_Size(w); |
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3155 assert(rn % 2 == 0); |
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3156 for (i = 0; i < rn; i += 2) { |
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3157 sprintf(p, "\\u%02x%02x", |
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3158 r[i + 0] & 0xFF, |
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3159 r[i + 1] & 0xFF); |
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3160 p += 6; |
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3161 } |
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3162 Py_DECREF(w); |
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3163 } else { |
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3164 *p++ = *s++; |
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3165 } |
|
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3166 } |
|
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3167 len = p - buf; |
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3168 s = buf; |
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3169 } |
|
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|
3170 if (rawmode) |
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3171 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
|
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3172 else |
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3173 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
|
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|
3174 Py_XDECREF(u); |
|
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|
3175 return v; |
| 35742 | 3176 } |
| 3177 | |
| 3178 /* s is a Python string literal, including the bracketing quote characters, | |
| 3179 * and r &/or u prefixes (if any), and embedded escape sequences (if any). | |
| 3180 * parsestr parses it, and returns the decoded Python string object. | |
| 3181 */ | |
| 3182 static PyObject * | |
| 40894 | 3183 parsestr(const node *n, const char *encoding, int *bytesmode) |
| 35742 | 3184 { |
|
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|
3185 size_t len; |
|
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|
3186 const char *s = STR(n); |
|
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|
3187 int quote = Py_CHARMASK(*s); |
|
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3188 int rawmode = 0; |
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|
3189 int need_encoding; |
| 35742 | 3190 |
|
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|
3191 if (isalpha(quote) || quote == '_') { |
|
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|
3192 if (quote == 'b' || quote == 'B') { |
|
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|
3193 quote = *++s; |
|
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3194 *bytesmode = 1; |
|
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3195 } |
|
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3196 if (quote == 'r' || quote == 'R') { |
|
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|
3197 quote = *++s; |
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|
3198 rawmode = 1; |
|
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|
3199 } |
|
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3200 } |
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|
3201 if (quote != '\'' && quote != '\"') { |
|
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|
3202 PyErr_BadInternalCall(); |
|
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|
3203 return NULL; |
|
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|
3204 } |
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|
3205 s++; |
|
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3206 len = strlen(s); |
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3207 if (len > INT_MAX) { |
|
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3208 PyErr_SetString(PyExc_OverflowError, |
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|
3209 "string to parse is too long"); |
|
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3210 return NULL; |
|
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3211 } |
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3212 if (s[--len] != quote) { |
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3213 PyErr_BadInternalCall(); |
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3214 return NULL; |
|
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3215 } |
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3216 if (len >= 4 && s[0] == quote && s[1] == quote) { |
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3217 s += 2; |
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3218 len -= 2; |
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3219 if (s[--len] != quote || s[--len] != quote) { |
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3220 PyErr_BadInternalCall(); |
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3221 return NULL; |
| 40894 | 3222 } |
|
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3223 } |
|
41558
29ae667f3239
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3224 if (!*bytesmode) { |
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3225 return decode_unicode(s, len, rawmode, encoding); |
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3226 } |
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3227 if (*bytesmode) { |
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3228 /* Disallow non-ascii characters (but not escapes) */ |
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|
3229 const char *c; |
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3230 for (c = s; *c; c++) { |
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3231 if (Py_CHARMASK(*c) >= 0x80) { |
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3232 ast_error(n, "bytes can only contain ASCII " |
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3233 "literal characters."); |
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3234 return NULL; |
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3235 } |
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3236 } |
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3237 } |
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3238 need_encoding = (!*bytesmode && encoding != NULL && |
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3239 strcmp(encoding, "utf-8") != 0 && |
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3240 strcmp(encoding, "iso-8859-1") != 0); |
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3241 if (rawmode || strchr(s, '\\') == NULL) { |
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3242 if (need_encoding) { |
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3243 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
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3244 if (u == NULL) |
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3245 return NULL; |
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3246 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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3247 Py_DECREF(u); |
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3248 return v; |
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3249 } else { |
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3250 return PyString_FromStringAndSize(s, len); |
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Four months of trunk changes (including a few releases...)
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3251 } |
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3252 } |
| 35742 | 3253 |
|
41698
7d49038e99c9
Remove support for u"..." literals.
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3254 return PyString_DecodeEscape(s, len, NULL, 1, |
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3255 need_encoding ? encoding : NULL); |
| 35742 | 3256 } |
| 3257 | |
| 3258 /* Build a Python string object out of a STRING atom. This takes care of | |
| 3259 * compile-time literal catenation, calling parsestr() on each piece, and | |
| 3260 * pasting the intermediate results together. | |
| 3261 */ | |
| 3262 static PyObject * | |
| 40894 | 3263 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3264 { |
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3265 PyObject *v; |
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3266 int i; |
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3267 REQ(CHILD(n, 0), STRING); |
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3268 v = parsestr(CHILD(n, 0), c->c_encoding, bytesmode); |
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3269 if (v != NULL) { |
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3270 /* String literal concatenation */ |
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3271 for (i = 1; i < NCH(n); i++) { |
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3272 PyObject *s; |
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3273 int subbm = 0; |
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3274 s = parsestr(CHILD(n, i), c->c_encoding, &subbm); |
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3275 if (s == NULL) |
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3276 goto onError; |
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3277 if (*bytesmode != subbm) { |
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3278 ast_error(n, "cannot mix bytes and nonbytes" |
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3279 "literals"); |
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3280 goto onError; |
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3281 } |
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3282 if (PyString_Check(v) && PyString_Check(s)) { |
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3283 PyString_ConcatAndDel(&v, s); |
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3284 if (v == NULL) |
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3285 goto onError; |
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3286 } |
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3287 else { |
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3288 PyObject *temp = PyUnicode_Concat(v, s); |
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3289 Py_DECREF(s); |
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3290 Py_DECREF(v); |
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3291 v = temp; |
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3292 if (v == NULL) |
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3293 goto onError; |
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3294 } |
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40450
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Thomas Wouters <thomas@python.org>
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3295 } |
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3296 } |
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3297 return v; |
| 35742 | 3298 |
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3299 onError: |
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3300 Py_XDECREF(v); |
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3301 return NULL; |
| 35742 | 3302 } |