Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 42013:cd125fe83051
Make identifiers str (not str8) objects throughout.
This affects the parser, various object implementations,
and all places that put identifiers into C string literals.
In testing, a number of crashes occurred as code would
fail when the recursion limit was reached (such as the
Unicode interning dictionary having key/value pairs where
key is not value). To solve these, I added an overflowed
flag, which allows for 50 more recursions after the
limit was reached and the exception was raised, and
a recursion_critical flag, which indicates that recursion
absolutely must be allowed, i.e. that a certain call
must not cause a stack overflow exception.
There are still some places where both str and str8 are
accepted as identifiers; these should eventually be
removed.
| author | Martin v. Löwis <martin@v.loewis.de> |
|---|---|
| date | Sun, 10 Jun 2007 09:51:05 +0000 |
| parents | 9d02a4adf574 |
| children | 063530fcc32e |
| rev | line source |
|---|---|
| 35742 | 1 /* |
| 2 * This file includes functions to transform a concrete syntax tree (CST) to | |
| 3 * an abstract syntax tree (AST). The main function is PyAST_FromNode(). | |
| 4 * | |
| 5 */ | |
| 6 #include "Python.h" | |
| 7 #include "Python-ast.h" | |
| 8 #include "grammar.h" | |
| 9 #include "node.h" | |
|
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10 #include "pyarena.h" |
| 35742 | 11 #include "ast.h" |
| 12 #include "token.h" | |
| 13 #include "parsetok.h" | |
| 14 #include "graminit.h" | |
| 15 | |
| 16 #include <assert.h> | |
| 17 | |
| 18 /* Data structure used internally */ | |
| 19 struct compiling { | |
|
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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parents:
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20 char *c_encoding; /* source encoding */ |
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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parents:
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21 PyArena *c_arena; /* arena for allocating memeory */ |
| 35742 | 22 }; |
| 23 | |
| 24 static asdl_seq *seq_for_testlist(struct compiling *, const node *); | |
| 25 static expr_ty ast_for_expr(struct compiling *, const node *); | |
| 26 static stmt_ty ast_for_stmt(struct compiling *, const node *); | |
| 27 static asdl_seq *ast_for_suite(struct compiling *, const node *); | |
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28 static asdl_seq *ast_for_exprlist(struct compiling *, const node *, |
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29 expr_context_ty); |
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30 static expr_ty ast_for_testlist(struct compiling *, const node *); |
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31 static stmt_ty ast_for_classdef(struct compiling *, const node *, asdl_seq *); |
| 35742 | 32 |
| 33 /* Note different signature for ast_for_call */ | |
| 34 static expr_ty ast_for_call(struct compiling *, const node *, expr_ty); | |
| 35 | |
| 36 static PyObject *parsenumber(const char *); | |
| 40894 | 37 static PyObject *parsestr(const node *n, const char *encoding, int *bytesmode); |
| 38 static PyObject *parsestrplus(struct compiling *, const node *n, | |
| 39 int *bytesmode); | |
| 35742 | 40 |
| 41 #ifndef LINENO | |
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42 #define LINENO(n) ((n)->n_lineno) |
| 35742 | 43 #endif |
| 44 | |
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45 #define COMP_GENEXP 0 |
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46 #define COMP_LISTCOMP 1 |
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47 #define COMP_SETCOMP 2 |
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48 |
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49 static identifier |
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50 new_identifier(const char* n, PyArena *arena) { |
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51 PyObject* id = PyUnicode_DecodeUTF8(n, strlen(n), NULL); |
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52 PyUnicode_InternInPlace(&id); |
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53 PyArena_AddPyObject(arena, id); |
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54 return id; |
| 35742 | 55 } |
| 56 | |
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57 #define NEW_IDENTIFIER(n) new_identifier(STR(n), c->c_arena) |
| 35742 | 58 |
| 59 /* This routine provides an invalid object for the syntax error. | |
| 60 The outermost routine must unpack this error and create the | |
| 61 proper object. We do this so that we don't have to pass | |
| 62 the filename to everything function. | |
| 63 | |
| 64 XXX Maybe we should just pass the filename... | |
| 65 */ | |
| 66 | |
| 67 static int | |
| 68 ast_error(const node *n, const char *errstr) | |
| 69 { | |
| 70 PyObject *u = Py_BuildValue("zi", errstr, LINENO(n)); | |
| 71 if (!u) | |
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72 return 0; |
| 35742 | 73 PyErr_SetObject(PyExc_SyntaxError, u); |
| 74 Py_DECREF(u); | |
| 75 return 0; | |
| 76 } | |
| 77 | |
| 78 static void | |
| 79 ast_error_finish(const char *filename) | |
| 80 { | |
| 81 PyObject *type, *value, *tback, *errstr, *loc, *tmp; | |
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82 long lineno; |
| 35742 | 83 |
| 84 assert(PyErr_Occurred()); | |
| 85 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
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86 return; |
| 35742 | 87 |
| 88 PyErr_Fetch(&type, &value, &tback); | |
| 89 errstr = PyTuple_GetItem(value, 0); | |
| 90 if (!errstr) | |
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91 return; |
| 35742 | 92 Py_INCREF(errstr); |
| 93 lineno = PyInt_AsLong(PyTuple_GetItem(value, 1)); | |
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94 if (lineno == -1) { |
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95 Py_DECREF(errstr); |
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96 return; |
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97 } |
| 35742 | 98 Py_DECREF(value); |
| 99 | |
| 100 loc = PyErr_ProgramText(filename, lineno); | |
| 101 if (!loc) { | |
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102 Py_INCREF(Py_None); |
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103 loc = Py_None; |
| 35742 | 104 } |
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105 tmp = Py_BuildValue("(zlOO)", filename, lineno, Py_None, loc); |
| 35742 | 106 Py_DECREF(loc); |
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107 if (!tmp) { |
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108 Py_DECREF(errstr); |
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109 return; |
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110 } |
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111 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 112 Py_DECREF(errstr); |
| 113 Py_DECREF(tmp); | |
| 114 if (!value) | |
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115 return; |
| 35742 | 116 PyErr_Restore(type, value, tback); |
| 117 } | |
| 118 | |
| 119 /* num_stmts() returns number of contained statements. | |
| 120 | |
| 121 Use this routine to determine how big a sequence is needed for | |
| 122 the statements in a parse tree. Its raison d'etre is this bit of | |
| 123 grammar: | |
| 124 | |
| 125 stmt: simple_stmt | compound_stmt | |
| 126 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 127 | |
| 128 A simple_stmt can contain multiple small_stmt elements joined | |
| 129 by semicolons. If the arg is a simple_stmt, the number of | |
| 130 small_stmt elements is returned. | |
| 131 */ | |
| 132 | |
| 133 static int | |
| 134 num_stmts(const node *n) | |
| 135 { | |
| 136 int i, l; | |
| 137 node *ch; | |
| 138 | |
| 139 switch (TYPE(n)) { | |
| 140 case single_input: | |
| 141 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 142 return 0; | |
| 143 else | |
| 144 return num_stmts(CHILD(n, 0)); | |
| 145 case file_input: | |
| 146 l = 0; | |
| 147 for (i = 0; i < NCH(n); i++) { | |
| 148 ch = CHILD(n, i); | |
| 149 if (TYPE(ch) == stmt) | |
| 150 l += num_stmts(ch); | |
| 151 } | |
| 152 return l; | |
| 153 case stmt: | |
| 154 return num_stmts(CHILD(n, 0)); | |
| 155 case compound_stmt: | |
| 156 return 1; | |
| 157 case simple_stmt: | |
| 158 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 159 case suite: | |
| 160 if (NCH(n) == 1) | |
| 161 return num_stmts(CHILD(n, 0)); | |
| 162 else { | |
| 163 l = 0; | |
| 164 for (i = 2; i < (NCH(n) - 1); i++) | |
| 165 l += num_stmts(CHILD(n, i)); | |
| 166 return l; | |
| 167 } | |
| 168 default: { | |
| 169 char buf[128]; | |
| 170 | |
| 171 sprintf(buf, "Non-statement found: %d %d\n", | |
| 172 TYPE(n), NCH(n)); | |
| 173 Py_FatalError(buf); | |
| 174 } | |
| 175 } | |
| 176 assert(0); | |
| 177 return 0; | |
| 178 } | |
| 179 | |
| 180 /* Transform the CST rooted at node * to the appropriate AST | |
| 181 */ | |
| 182 | |
| 183 mod_ty | |
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184 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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185 PyArena *arena) |
| 35742 | 186 { |
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187 int i, j, k, num; |
| 35742 | 188 asdl_seq *stmts = NULL; |
| 189 stmt_ty s; | |
| 190 node *ch; | |
| 191 struct compiling c; | |
| 192 | |
| 193 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
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194 c.c_encoding = "utf-8"; |
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195 if (TYPE(n) == encoding_decl) { |
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196 ast_error(n, "encoding declaration in Unicode string"); |
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197 goto error; |
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198 } |
| 35742 | 199 } else if (TYPE(n) == encoding_decl) { |
| 200 c.c_encoding = STR(n); | |
| 201 n = CHILD(n, 0); | |
| 202 } else { | |
| 203 c.c_encoding = NULL; | |
| 204 } | |
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205 c.c_arena = arena; |
| 35742 | 206 |
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207 k = 0; |
| 35742 | 208 switch (TYPE(n)) { |
| 209 case file_input: | |
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210 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 211 if (!stmts) |
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212 return NULL; |
| 35742 | 213 for (i = 0; i < NCH(n) - 1; i++) { |
| 214 ch = CHILD(n, i); | |
| 215 if (TYPE(ch) == NEWLINE) | |
| 216 continue; | |
| 217 REQ(ch, stmt); | |
| 218 num = num_stmts(ch); | |
| 219 if (num == 1) { | |
| 220 s = ast_for_stmt(&c, ch); | |
| 221 if (!s) | |
| 222 goto error; | |
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223 asdl_seq_SET(stmts, k++, s); |
| 35742 | 224 } |
| 225 else { | |
| 226 ch = CHILD(ch, 0); | |
| 227 REQ(ch, simple_stmt); | |
| 228 for (j = 0; j < num; j++) { | |
| 229 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 230 if (!s) | |
| 231 goto error; | |
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232 asdl_seq_SET(stmts, k++, s); |
| 35742 | 233 } |
| 234 } | |
| 235 } | |
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236 return Module(stmts, arena); |
| 35742 | 237 case eval_input: { |
| 238 expr_ty testlist_ast; | |
| 239 | |
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240 /* XXX Why not comp_for here? */ |
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241 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 242 if (!testlist_ast) |
| 243 goto error; | |
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244 return Expression(testlist_ast, arena); |
| 35742 | 245 } |
| 246 case single_input: | |
| 247 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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248 stmts = asdl_seq_new(1, arena); |
| 35742 | 249 if (!stmts) |
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250 goto error; |
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251 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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252 arena)); |
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253 if (!asdl_seq_GET(stmts, 0)) |
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254 goto error; |
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255 return Interactive(stmts, arena); |
| 35742 | 256 } |
| 257 else { | |
| 258 n = CHILD(n, 0); | |
| 259 num = num_stmts(n); | |
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260 stmts = asdl_seq_new(num, arena); |
| 35742 | 261 if (!stmts) |
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262 goto error; |
| 35742 | 263 if (num == 1) { |
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264 s = ast_for_stmt(&c, n); |
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265 if (!s) |
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266 goto error; |
| 35742 | 267 asdl_seq_SET(stmts, 0, s); |
| 268 } | |
| 269 else { | |
| 270 /* Only a simple_stmt can contain multiple statements. */ | |
| 271 REQ(n, simple_stmt); | |
| 272 for (i = 0; i < NCH(n); i += 2) { | |
| 273 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 274 break; | |
| 275 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 276 if (!s) | |
| 277 goto error; | |
| 278 asdl_seq_SET(stmts, i / 2, s); | |
| 279 } | |
| 280 } | |
| 281 | |
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282 return Interactive(stmts, arena); |
| 35742 | 283 } |
| 284 default: | |
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285 PyErr_Format(PyExc_SystemError, |
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286 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 287 goto error; |
| 288 } | |
| 289 error: | |
| 290 ast_error_finish(filename); | |
| 291 return NULL; | |
| 292 } | |
| 293 | |
| 294 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 295 */ | |
| 296 | |
| 297 static operator_ty | |
| 298 get_operator(const node *n) | |
| 299 { | |
| 300 switch (TYPE(n)) { | |
| 301 case VBAR: | |
| 302 return BitOr; | |
| 303 case CIRCUMFLEX: | |
| 304 return BitXor; | |
| 305 case AMPER: | |
| 306 return BitAnd; | |
| 307 case LEFTSHIFT: | |
| 308 return LShift; | |
| 309 case RIGHTSHIFT: | |
| 310 return RShift; | |
| 311 case PLUS: | |
| 312 return Add; | |
| 313 case MINUS: | |
| 314 return Sub; | |
| 315 case STAR: | |
| 316 return Mult; | |
| 317 case SLASH: | |
| 318 return Div; | |
| 319 case DOUBLESLASH: | |
| 320 return FloorDiv; | |
| 321 case PERCENT: | |
| 322 return Mod; | |
| 323 default: | |
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324 return (operator_ty)0; |
| 35742 | 325 } |
| 326 } | |
| 327 | |
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328 static const char* FORBIDDEN[] = { |
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329 "None", |
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330 "True", |
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331 "False", |
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332 NULL, |
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333 }; |
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334 |
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335 static int |
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336 forbidden_name(expr_ty e, const node *n) |
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337 { |
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338 const char **p; |
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339 assert(PyUnicode_Check(e->v.Name.id)); |
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340 for (p = FORBIDDEN; *p; p++) { |
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341 if (PyUnicode_CompareWithASCIIString(e->v.Name.id, *p) == 0) { |
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342 ast_error(n, "assignment to keyword"); |
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343 return 1; |
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344 } |
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345 } |
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346 return 0; |
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347 } |
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348 |
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349 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 350 |
| 351 Only sets context for expr kinds that "can appear in assignment context" | |
| 352 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 353 an appropriate syntax error and returns false. | |
| 354 */ | |
| 355 | |
| 356 static int | |
| 357 set_context(expr_ty e, expr_context_ty ctx, const node *n) | |
| 358 { | |
| 359 asdl_seq *s = NULL; | |
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360 /* If a particular expression type can't be used for assign / delete, |
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361 set expr_name to its name and an error message will be generated. |
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362 */ |
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363 const char* expr_name = NULL; |
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364 |
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365 /* The ast defines augmented store and load contexts, but the |
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366 implementation here doesn't actually use them. The code may be |
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367 a little more complex than necessary as a result. It also means |
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368 that expressions in an augmented assignment have a Store context. |
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369 Consider restructuring so that augmented assignment uses |
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370 set_context(), too. |
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371 */ |
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372 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 373 |
| 374 switch (e->kind) { | |
| 375 case Attribute_kind: | |
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376 if (ctx == Store && |
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377 !PyUnicode_CompareWithASCIIString(e->v.Attribute.attr, "None")) { |
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378 return ast_error(n, "assignment to None"); |
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379 } |
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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 Dict_kind: |
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431 case Set_kind: |
| 35742 | 432 case Num_kind: |
| 433 case Str_kind: | |
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434 expr_name = "literal"; |
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435 break; |
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436 case Ellipsis_kind: |
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437 expr_name = "Ellipsis"; |
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438 break; |
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439 case Compare_kind: |
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440 expr_name = "comparison"; |
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441 break; |
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442 case IfExp_kind: |
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443 expr_name = "conditional expression"; |
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444 break; |
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445 default: |
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446 PyErr_Format(PyExc_SystemError, |
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447 "unexpected expression in assignment %d (line %d)", |
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448 e->kind, e->lineno); |
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449 return 0; |
| 35742 | 450 } |
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451 /* Check for error string set by switch */ |
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452 if (expr_name) { |
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453 char buf[300]; |
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454 PyOS_snprintf(buf, sizeof(buf), |
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455 "can't %s %s", |
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456 ctx == Store ? "assign to" : "delete", |
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457 expr_name); |
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458 return ast_error(n, buf); |
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459 } |
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460 |
| 35742 | 461 /* If the LHS is a list or tuple, we need to set the assignment |
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462 context for all the contained elements. |
| 35742 | 463 */ |
| 464 if (s) { | |
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465 int i; |
| 35742 | 466 |
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467 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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468 if (!set_context((expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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469 return 0; |
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470 } |
| 35742 | 471 } |
| 472 return 1; | |
| 473 } | |
| 474 | |
| 475 static operator_ty | |
| 476 ast_for_augassign(const node *n) | |
| 477 { | |
| 478 REQ(n, augassign); | |
| 479 n = CHILD(n, 0); | |
| 480 switch (STR(n)[0]) { | |
| 481 case '+': | |
| 482 return Add; | |
| 483 case '-': | |
| 484 return Sub; | |
| 485 case '/': | |
| 486 if (STR(n)[1] == '/') | |
| 487 return FloorDiv; | |
| 488 else | |
| 489 return Div; | |
| 490 case '%': | |
| 491 return Mod; | |
| 492 case '<': | |
| 493 return LShift; | |
| 494 case '>': | |
| 495 return RShift; | |
| 496 case '&': | |
| 497 return BitAnd; | |
| 498 case '^': | |
| 499 return BitXor; | |
| 500 case '|': | |
| 501 return BitOr; | |
| 502 case '*': | |
| 503 if (STR(n)[1] == '*') | |
| 504 return Pow; | |
| 505 else | |
| 506 return Mult; | |
| 507 default: | |
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508 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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509 return (operator_ty)0; |
| 35742 | 510 } |
| 511 } | |
| 512 | |
| 513 static cmpop_ty | |
| 514 ast_for_comp_op(const node *n) | |
| 515 { | |
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516 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 517 |'is' 'not' |
| 518 */ | |
| 519 REQ(n, comp_op); | |
| 520 if (NCH(n) == 1) { | |
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521 n = CHILD(n, 0); |
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522 switch (TYPE(n)) { |
| 35742 | 523 case LESS: |
| 524 return Lt; | |
| 525 case GREATER: | |
| 526 return Gt; | |
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527 case EQEQUAL: /* == */ |
| 35742 | 528 return Eq; |
| 529 case LESSEQUAL: | |
| 530 return LtE; | |
| 531 case GREATEREQUAL: | |
| 532 return GtE; | |
| 533 case NOTEQUAL: | |
| 534 return NotEq; | |
| 535 case NAME: | |
| 536 if (strcmp(STR(n), "in") == 0) | |
| 537 return In; | |
| 538 if (strcmp(STR(n), "is") == 0) | |
| 539 return Is; | |
| 540 default: | |
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541 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 542 STR(n)); |
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543 return (cmpop_ty)0; |
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544 } |
| 35742 | 545 } |
| 546 else if (NCH(n) == 2) { | |
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547 /* handle "not in" and "is not" */ |
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548 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 549 case NAME: |
| 550 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 551 return NotIn; | |
| 552 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 553 return IsNot; | |
| 554 default: | |
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555 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 556 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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557 return (cmpop_ty)0; |
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558 } |
| 35742 | 559 } |
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560 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 561 NCH(n)); |
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562 return (cmpop_ty)0; |
| 35742 | 563 } |
| 564 | |
| 565 static asdl_seq * | |
| 566 seq_for_testlist(struct compiling *c, const node *n) | |
| 567 { | |
| 568 /* testlist: test (',' test)* [','] */ | |
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569 asdl_seq *seq; |
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570 expr_ty expression; |
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571 int i; |
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572 assert(TYPE(n) == testlist || TYPE(n) == testlist_comp); |
| 35742 | 573 |
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574 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 575 if (!seq) |
| 576 return NULL; | |
| 577 | |
| 578 for (i = 0; i < NCH(n); i += 2) { | |
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579 assert(TYPE(CHILD(n, i)) == test || TYPE(CHILD(n, i)) == test_nocond); |
| 35742 | 580 |
| 581 expression = ast_for_expr(c, CHILD(n, i)); | |
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582 if (!expression) |
| 35742 | 583 return NULL; |
| 584 | |
| 585 assert(i / 2 < seq->size); | |
| 586 asdl_seq_SET(seq, i / 2, expression); | |
| 587 } | |
| 588 return seq; | |
| 589 } | |
| 590 | |
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591 static arg_ty |
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592 compiler_arg(struct compiling *c, const node *n) |
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593 { |
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594 identifier name; |
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595 expr_ty annotation = NULL; |
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596 node *ch; |
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597 |
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598 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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599 ch = CHILD(n, 0); |
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600 if (!strcmp(STR(ch), "None")) { |
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601 ast_error(ch, "assignment to None"); |
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602 return NULL; |
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603 } |
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604 name = NEW_IDENTIFIER(ch); |
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605 if (!name) |
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606 return NULL; |
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607 |
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608 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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609 annotation = ast_for_expr(c, CHILD(n, 2)); |
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610 if (!annotation) |
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611 return NULL; |
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612 } |
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613 |
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614 return arg(name, annotation, c->c_arena); |
| 35742 | 615 } |
| 616 | |
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617 /* returns -1 if failed to handle keyword only arguments |
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618 returns new position to keep processing if successful |
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619 (',' tfpdef ['=' test])* |
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620 ^^^ |
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621 start pointing here |
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622 */ |
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623 static int |
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624 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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625 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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626 { |
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627 node *ch; |
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628 expr_ty expression, annotation; |
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629 arg_ty arg; |
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630 int i = start; |
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631 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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632 assert(kwonlyargs != NULL); |
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633 assert(kwdefaults != NULL); |
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634 while (i < NCH(n)) { |
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635 ch = CHILD(n, i); |
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636 switch (TYPE(ch)) { |
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637 case vfpdef: |
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638 case tfpdef: |
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639 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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640 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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641 if (!expression) { |
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changeset
|
642 ast_error(ch, "assignment to None"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
643 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
644 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
645 asdl_seq_SET(kwdefaults, j, expression); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
646 i += 2; /* '=' and test */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
647 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
648 else { /* setting NULL if no default value exists */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
649 asdl_seq_SET(kwdefaults, j, NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
650 } |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
651 if (NCH(ch) == 3) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
652 /* ch is NAME ':' test */ |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
653 annotation = 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
|
654 if (!annotation) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
655 ast_error(ch, "expected expression"); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
656 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
657 } |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
658 } |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
659 else { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
660 annotation = NULL; |
|
54cd47788811
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
661 } |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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changeset
|
662 ch = CHILD(ch, 0); |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
663 if (!strcmp(STR(ch), "None")) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
664 ast_error(ch, "assignment to None"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
665 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
666 } |
|
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9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
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parents:
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diff
changeset
|
667 arg = arg(NEW_IDENTIFIER(ch), annotation, c->c_arena); |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
668 if (!arg) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
669 ast_error(ch, "expecting name"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
670 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
671 } |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
672 asdl_seq_SET(kwonlyargs, j++, arg); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
673 i += 2; /* the name and the comma */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
674 break; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
675 case DOUBLESTAR: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
676 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
677 default: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
678 ast_error(ch, "unexpected node"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
679 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
680 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
681 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
682 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
683 error: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
684 return -1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
685 } |
| 35742 | 686 |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
687 /* Create AST for argument list. */ |
| 35742 | 688 |
| 689 static arguments_ty | |
| 690 ast_for_arguments(struct compiling *c, const node *n) | |
| 691 { | |
|
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54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
692 /* This function handles both typedargslist (function definition) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
693 and varargslist (lambda definition). |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
694 |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
695 parameters: '(' [typedargslist] ')' |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
696 typedargslist: ((tfpdef ['=' test] ',')* |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
697 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
698 | '**' tfpdef) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
699 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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changeset
|
700 tfpdef: NAME [':' test] |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
701 varargslist: ((vfpdef ['=' test] ',')* |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
702 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
703 | '**' vfpdef) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
704 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
705 vfpdef: NAME |
| 35742 | 706 */ |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
707 int i, j, k, nposargs = 0, nkwonlyargs = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
708 int nposdefaults = 0, found_default = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
709 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 710 identifier vararg = NULL, kwarg = NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
711 arg_ty arg; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
712 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 713 node *ch; |
| 714 | |
| 715 if (TYPE(n) == parameters) { | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
716 if (NCH(n) == 2) /* () as argument list */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
717 return arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
718 NULL, c->c_arena); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
719 n = CHILD(n, 1); |
| 35742 | 720 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
721 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 722 |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
723 /* first count the number of positional args & defaults */ |
| 35742 | 724 for (i = 0; i < NCH(n); i++) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
725 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
726 if (TYPE(ch) == STAR) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
727 /* skip star and possible argument */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
728 i++; |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
729 i += (TYPE(CHILD(n, i)) == tfpdef |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
730 || TYPE(CHILD(n, i)) == vfpdef); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
731 break; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
732 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
733 if (TYPE(ch) == DOUBLESTAR) break; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
734 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
|
735 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
736 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
737 /* count the number of keyword only args & |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
738 defaults for keyword only args */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
739 for ( ; i < NCH(n); ++i) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
740 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
741 if (TYPE(ch) == DOUBLESTAR) break; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
742 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 743 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
744 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
|
745 if (!posargs && nposargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
746 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
747 kwonlyargs = (nkwonlyargs ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
748 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
|
749 if (!kwonlyargs && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
750 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
751 posdefaults = (nposdefaults ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
752 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
|
753 if (!posdefaults && nposdefaults) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
754 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
755 /* The length of kwonlyargs and kwdefaults are same |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
756 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
|
757 - we have sequence data structure, but no dictionary */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
758 kwdefaults = (nkwonlyargs ? |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
759 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
|
760 if (!kwdefaults && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
761 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
762 |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
763 if (nposargs + nkwonlyargs > 255) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
764 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
|
765 return NULL; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
766 } |
| 35742 | 767 |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
768 /* tfpdef: NAME [':' test] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
769 vfpdef: NAME |
| 35742 | 770 */ |
| 771 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
772 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
|
773 k = 0; /* index for args */ |
| 35742 | 774 while (i < NCH(n)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
775 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
776 switch (TYPE(ch)) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
777 case tfpdef: |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
778 case vfpdef: |
| 35742 | 779 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 780 anything other than EQUAL or a comma? */ | |
| 781 /* XXX Should NCH(n) check be made a separate check? */ | |
| 782 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
|
783 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
|
784 if (!expression) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
785 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
786 assert(posdefaults != NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
787 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 788 i += 2; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
789 found_default = 1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
790 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
791 else if (found_default) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
792 ast_error(n, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
793 "non-default argument follows default argument"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
794 goto error; |
| 35742 | 795 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
796 arg = compiler_arg(c, ch); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
797 if (!arg) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
798 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
799 asdl_seq_SET(posargs, k++, arg); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
800 |
| 35742 | 801 i += 2; /* the name and the comma */ |
| 802 break; | |
| 803 case STAR: | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
804 if (i+1 >= NCH(n)) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
805 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
|
806 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
807 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
808 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
|
809 if (TYPE(ch) == COMMA) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
810 int res = 0; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
811 i += 2; /* now follows keyword only arguments */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
812 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
813 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
814 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
815 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
|
816 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
817 else if (!strcmp(STR(CHILD(ch, 0)), "None")) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
818 ast_error(CHILD(ch, 0), "assignment to None"); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
819 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
820 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
821 else { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
822 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
823 if (NCH(ch) > 1) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
824 /* 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
|
825 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
|
826 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
827 i += 3; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
828 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
|
829 || TYPE(CHILD(n, i)) == vfpdef)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
830 int res = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
831 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
832 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
833 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
834 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
|
835 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
836 } |
| 35742 | 837 break; |
| 838 case DOUBLESTAR: | |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
839 ch = CHILD(n, i+1); /* tfpdef */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
840 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
|
841 if (!strcmp(STR(CHILD(ch, 0)), "None")) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
842 ast_error(CHILD(ch, 0), "assignment to None"); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
843 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
844 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
845 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
846 if (NCH(ch) > 1) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
847 /* 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
|
848 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
|
849 } |
| 35742 | 850 i += 3; |
| 851 break; | |
| 852 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
853 PyErr_Format(PyExc_SystemError, |
| 35742 | 854 "unexpected node in varargslist: %d @ %d", |
| 855 TYPE(ch), i); | |
| 856 goto error; | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
857 } |
| 35742 | 858 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
859 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
|
860 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 861 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
|
862 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
|
863 Py_XDECREF(kwarg); |
| 35742 | 864 return NULL; |
| 865 } | |
| 866 | |
| 867 static expr_ty | |
| 868 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 869 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
870 expr_ty e; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
871 identifier id; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
872 int lineno, col_offset; |
| 35742 | 873 int i; |
| 874 | |
| 875 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
|
876 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
877 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
878 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
|
879 |
| 35742 | 880 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 881 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
|
882 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
883 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 884 if (!e) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
885 return NULL; |
| 35742 | 886 |
| 887 for (i = 2; i < NCH(n); i+=2) { | |
| 888 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
|
889 if (!id) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
890 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
891 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
|
892 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
893 return NULL; |
| 35742 | 894 } |
| 895 | |
| 896 return e; | |
| 897 } | |
| 898 | |
| 899 static expr_ty | |
| 900 ast_for_decorator(struct compiling *c, const node *n) | |
| 901 { | |
| 902 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 903 expr_ty d = NULL; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
904 expr_ty name_expr; |
| 35742 | 905 |
| 906 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
907 REQ(CHILD(n, 0), AT); |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
908 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 909 |
| 910 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 911 if (!name_expr) | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
912 return NULL; |
|
cc992d75d5b3
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913 |
| 35742 | 914 if (NCH(n) == 3) { /* No arguments */ |
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915 d = name_expr; |
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916 name_expr = NULL; |
| 35742 | 917 } |
| 918 else if (NCH(n) == 5) { /* Call with no arguments */ | |
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|
919 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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920 n->n_col_offset, c->c_arena); |
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921 if (!d) |
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922 return NULL; |
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923 name_expr = NULL; |
| 35742 | 924 } |
| 925 else { | |
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926 d = ast_for_call(c, CHILD(n, 3), name_expr); |
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927 if (!d) |
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928 return NULL; |
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|
929 name_expr = NULL; |
| 35742 | 930 } |
| 931 | |
| 932 return d; | |
| 933 } | |
| 934 | |
| 935 static asdl_seq* | |
| 936 ast_for_decorators(struct compiling *c, const node *n) | |
| 937 { | |
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938 asdl_seq* decorator_seq; |
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|
939 expr_ty d; |
| 35742 | 940 int i; |
| 941 | |
| 942 REQ(n, decorators); | |
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943 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 944 if (!decorator_seq) |
| 945 return NULL; | |
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946 |
| 35742 | 947 for (i = 0; i < NCH(n); i++) { |
|
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948 d = ast_for_decorator(c, CHILD(n, i)); |
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949 if (!d) |
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950 return NULL; |
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951 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 952 } |
| 953 return decorator_seq; | |
| 954 } | |
| 955 | |
| 956 static stmt_ty | |
|
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957 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 958 { |
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959 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
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960 identifier name; |
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961 arguments_ty args; |
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962 asdl_seq *body; |
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963 expr_ty returns = NULL; |
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964 int name_i = 1; |
| 35742 | 965 |
| 966 REQ(n, funcdef); | |
| 967 | |
| 968 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 969 if (!name) | |
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970 return NULL; |
| 35742 | 971 else if (!strcmp(STR(CHILD(n, name_i)), "None")) { |
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972 ast_error(CHILD(n, name_i), "assignment to None"); |
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973 return NULL; |
| 35742 | 974 } |
| 975 args = ast_for_arguments(c, CHILD(n, name_i + 1)); | |
| 976 if (!args) | |
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977 return NULL; |
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978 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
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979 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
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980 if (!returns) |
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981 return NULL; |
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982 name_i += 2; |
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983 } |
| 35742 | 984 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 985 if (!body) | |
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986 return NULL; |
| 35742 | 987 |
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988 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
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989 n->n_col_offset, c->c_arena); |
| 35742 | 990 } |
| 991 | |
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992 static stmt_ty |
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993 ast_for_decorated(struct compiling *c, const node *n) |
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994 { |
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995 /* decorated: decorators (classdef | funcdef) */ |
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996 stmt_ty thing = NULL; |
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997 asdl_seq *decorator_seq = NULL; |
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998 |
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999 REQ(n, decorated); |
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|
1000 |
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1001 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
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1002 if (!decorator_seq) |
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1003 return NULL; |
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1004 |
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1005 assert(TYPE(CHILD(n, 1)) == funcdef || |
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1006 TYPE(CHILD(n, 1)) == classdef); |
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1007 |
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1008 if (TYPE(CHILD(n, 1)) == funcdef) { |
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1009 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
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1010 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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1011 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
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1012 } |
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1013 return thing; |
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1014 } |
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1015 |
| 35742 | 1016 static expr_ty |
| 1017 ast_for_lambdef(struct compiling *c, const node *n) | |
| 1018 { | |
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1019 /* lambdef: 'lambda' [varargslist] ':' test |
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1020 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1021 arguments_ty args; |
| 1022 expr_ty expression; | |
| 1023 | |
| 1024 if (NCH(n) == 3) { | |
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1025 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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1026 NULL, c->c_arena); |
| 35742 | 1027 if (!args) |
| 1028 return NULL; | |
| 1029 expression = ast_for_expr(c, CHILD(n, 2)); | |
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1030 if (!expression) |
| 35742 | 1031 return NULL; |
| 1032 } | |
| 1033 else { | |
| 1034 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1035 if (!args) | |
| 1036 return NULL; | |
| 1037 expression = ast_for_expr(c, CHILD(n, 3)); | |
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1038 if (!expression) |
| 35742 | 1039 return NULL; |
| 1040 } | |
| 1041 | |
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1042 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1043 } |
| 1044 | |
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1045 static expr_ty |
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1046 ast_for_ifexpr(struct compiling *c, const node *n) |
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1047 { |
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1048 /* test: or_test 'if' or_test 'else' test */ |
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1049 expr_ty expression, body, orelse; |
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1050 |
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1051 assert(NCH(n) == 5); |
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1052 body = ast_for_expr(c, CHILD(n, 0)); |
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1053 if (!body) |
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1054 return NULL; |
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1055 expression = ast_for_expr(c, CHILD(n, 2)); |
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1056 if (!expression) |
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1057 return NULL; |
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1058 orelse = ast_for_expr(c, CHILD(n, 4)); |
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1059 if (!orelse) |
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1060 return NULL; |
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1061 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
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1062 c->c_arena); |
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1063 } |
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1064 |
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1065 /* |
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1066 Count the number of 'for' loops in a comprehension. |
| 35742 | 1067 |
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1068 Helper for ast_for_comprehension(). |
| 35742 | 1069 */ |
| 1070 | |
| 1071 static int | |
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1072 count_comp_fors(const node *n) |
| 35742 | 1073 { |
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1074 int n_fors = 0; |
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1075 node *ch = CHILD(n, 1); |
| 35742 | 1076 |
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1077 count_comp_for: |
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1078 n_fors++; |
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1079 REQ(ch, comp_for); |
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1080 if (NCH(ch) == 5) |
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1081 ch = CHILD(ch, 4); |
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1082 else |
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1083 return n_fors; |
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1084 count_comp_iter: |
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1085 REQ(ch, comp_iter); |
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1086 ch = CHILD(ch, 0); |
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1087 if (TYPE(ch) == comp_for) |
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1088 goto count_comp_for; |
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1089 else if (TYPE(ch) == comp_if) { |
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1090 if (NCH(ch) == 3) { |
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1091 ch = CHILD(ch, 2); |
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1092 goto count_comp_iter; |
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1093 } |
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1094 else |
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1095 return n_fors; |
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1096 } |
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1097 |
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1098 /* Should never be reached */ |
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1099 PyErr_SetString(PyExc_SystemError, |
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1100 "logic error in count_comp_fors"); |
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1101 return -1; |
| 35742 | 1102 } |
| 1103 | |
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1104 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1105 |
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1106 Helper for ast_for_comprehension(). |
| 35742 | 1107 */ |
| 1108 | |
| 1109 static int | |
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1110 count_comp_ifs(const node *n) |
| 35742 | 1111 { |
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1112 int n_ifs = 0; |
| 35742 | 1113 |
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1114 while (1) { |
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1115 REQ(n, comp_iter); |
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1116 if (TYPE(CHILD(n, 0)) == comp_for) |
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1117 return n_ifs; |
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1118 n = CHILD(n, 0); |
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1119 REQ(n, comp_if); |
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1120 n_ifs++; |
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1121 if (NCH(n) == 2) |
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1122 return n_ifs; |
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1123 n = CHILD(n, 2); |
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1124 } |
| 35742 | 1125 } |
| 1126 | |
| 1127 static expr_ty | |
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1128 ast_for_comprehension(struct compiling *c, const node *n, int type) |
| 35742 | 1129 { |
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1130 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1131 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
| 35742 | 1132 expr_ty elt; |
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1133 asdl_seq *comps; |
| 35742 | 1134 int i, n_fors; |
| 1135 node *ch; | |
| 1136 | |
| 1137 assert(NCH(n) > 1); | |
| 1138 | |
| 1139 elt = ast_for_expr(c, CHILD(n, 0)); | |
| 1140 if (!elt) | |
| 1141 return NULL; | |
| 1142 | |
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1143 n_fors = count_comp_fors(n); |
| 35742 | 1144 if (n_fors == -1) |
| 1145 return NULL; | |
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1146 |
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1147 comps = asdl_seq_new(n_fors, c->c_arena); |
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1148 if (!comps) |
| 35742 | 1149 return NULL; |
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1150 |
| 35742 | 1151 ch = CHILD(n, 1); |
| 1152 for (i = 0; i < n_fors; i++) { | |
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1153 comprehension_ty comp; |
| 35742 | 1154 asdl_seq *t; |
| 1155 expr_ty expression; | |
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1156 node *for_ch; |
| 35742 | 1157 |
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1158 REQ(ch, comp_for); |
| 35742 | 1159 |
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1160 for_ch = CHILD(ch, 1); |
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1161 t = ast_for_exprlist(c, for_ch, Store); |
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1162 if (!t) |
| 35742 | 1163 return NULL; |
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1164 expression = ast_for_expr(c, CHILD(ch, 3)); |
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1165 if (!expression) |
| 35742 | 1166 return NULL; |
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1167 |
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1168 /* Check the # of children rather than the length of t, since |
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1169 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
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1170 if (NCH(for_ch) == 1) |
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1171 comp = comprehension((expr_ty)asdl_seq_GET(t, 0), expression, |
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1172 NULL, c->c_arena); |
| 35742 | 1173 else |
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1174 comp = comprehension(Tuple(t, Store, LINENO(ch), ch->n_col_offset, |
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1175 c->c_arena), |
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1176 expression, NULL, c->c_arena); |
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1177 |
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1178 if (!comp) |
| 35742 | 1179 return NULL; |
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1180 |
| 35742 | 1181 if (NCH(ch) == 5) { |
| 1182 int j, n_ifs; | |
| 1183 asdl_seq *ifs; | |
| 1184 | |
| 1185 ch = CHILD(ch, 4); | |
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1186 n_ifs = count_comp_ifs(ch); |
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1187 if (n_ifs == -1) |
| 35742 | 1188 return NULL; |
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1189 |
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1190 ifs = asdl_seq_new(n_ifs, c->c_arena); |
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1191 if (!ifs) |
| 35742 | 1192 return NULL; |
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1193 |
| 35742 | 1194 for (j = 0; j < n_ifs; j++) { |
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1195 REQ(ch, comp_iter); |
| 35742 | 1196 ch = CHILD(ch, 0); |
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1197 REQ(ch, comp_if); |
| 35742 | 1198 |
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1199 expression = ast_for_expr(c, CHILD(ch, 1)); |
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1200 if (!expression) |
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1201 return NULL; |
|
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1202 asdl_seq_SET(ifs, j, expression); |
| 35742 | 1203 if (NCH(ch) == 3) |
| 1204 ch = CHILD(ch, 2); | |
| 1205 } | |
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1206 /* on exit, must guarantee that ch is a comp_for */ |
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1207 if (TYPE(ch) == comp_iter) |
| 35742 | 1208 ch = CHILD(ch, 0); |
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1209 comp->ifs = ifs; |
| 35742 | 1210 } |
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1211 asdl_seq_SET(comps, i, comp); |
| 35742 | 1212 } |
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1213 |
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1214 if (type == COMP_GENEXP) |
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1215 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1216 else if (type == COMP_LISTCOMP) |
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1217 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1218 else if (type == COMP_SETCOMP) |
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1219 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1220 else |
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1221 /* Should never happen */ |
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1222 return NULL; |
| 35742 | 1223 } |
| 1224 | |
| 1225 static expr_ty | |
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1226 ast_for_genexp(struct compiling *c, const node *n) |
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1227 { |
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1228 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1229 return ast_for_comprehension(c, n, COMP_GENEXP); |
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1230 } |
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1231 |
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|
1232 static expr_ty |
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|
1233 ast_for_listcomp(struct compiling *c, const node *n) |
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1234 { |
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|
1235 assert(TYPE(n) == (testlist_comp)); |
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|
1236 return ast_for_comprehension(c, n, COMP_LISTCOMP); |
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1237 } |
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|
1238 |
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|
1239 static expr_ty |
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|
1240 ast_for_setcomp(struct compiling *c, const node *n) |
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|
1241 { |
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|
1242 assert(TYPE(n) == (dictorsetmaker)); |
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1243 return ast_for_comprehension(c, n, COMP_SETCOMP); |
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1244 } |
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|
1245 |
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|
1246 |
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|
1247 static expr_ty |
| 35742 | 1248 ast_for_atom(struct compiling *c, const node *n) |
| 1249 { | |
|
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1250 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1251 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
|
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1252 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1253 */ |
| 1254 node *ch = CHILD(n, 0); | |
| 40894 | 1255 int bytesmode = 0; |
| 35742 | 1256 |
| 1257 switch (TYPE(ch)) { | |
| 1258 case NAME: | |
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1259 /* All names start in Load context, but may later be |
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1260 changed. */ |
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1261 return Name(NEW_IDENTIFIER(ch), Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1262 case STRING: { |
| 40894 | 1263 PyObject *str = parsestrplus(c, n, &bytesmode); |
|
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1264 if (!str) |
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1265 return NULL; |
|
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1266 |
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1267 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1268 if (bytesmode) |
| 1269 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1270 else | |
| 1271 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1272 } |
| 1273 case NUMBER: { | |
|
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1274 PyObject *pynum = parsenumber(STR(ch)); |
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1275 if (!pynum) |
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1276 return NULL; |
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1277 |
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1278 PyArena_AddPyObject(c->c_arena, pynum); |
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1279 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1280 } |
|
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1281 case ELLIPSIS: /* Ellipsis */ |
|
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1282 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1283 case LPAR: /* some parenthesized expressions */ |
|
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1284 ch = CHILD(n, 1); |
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1285 |
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1286 if (TYPE(ch) == RPAR) |
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1287 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1288 |
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1289 if (TYPE(ch) == yield_expr) |
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1290 return ast_for_expr(c, ch); |
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1291 |
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1292 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
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1293 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
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1294 return ast_for_genexp(c, ch); |
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1295 |
|
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1296 return ast_for_testlist(c, ch); |
| 35742 | 1297 case LSQB: /* list (or list comprehension) */ |
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1298 ch = CHILD(n, 1); |
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1299 |
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1300 if (TYPE(ch) == RSQB) |
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1301 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1302 |
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1303 REQ(ch, testlist_comp); |
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1304 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
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1305 asdl_seq *elts = seq_for_testlist(c, ch); |
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1306 if (!elts) |
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1307 return NULL; |
|
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1308 |
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1309 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1310 } |
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1311 else |
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1312 return ast_for_listcomp(c, ch); |
| 35742 | 1313 case LBRACE: { |
|
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1314 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
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1315 * test (gen_for | (',' test)* [',']) */ |
|
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1316 int i, size; |
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1317 asdl_seq *keys, *values; |
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1318 |
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1319 ch = CHILD(n, 1); |
|
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1320 if (TYPE(ch) == RBRACE) { |
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1321 /* it's an empty dict */ |
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1322 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
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1323 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
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1324 /* it's a simple set */ |
|
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1325 asdl_seq *elts; |
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1326 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
|
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1327 elts = asdl_seq_new(size, c->c_arena); |
|
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1328 if (!elts) |
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1329 return NULL; |
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1330 for (i = 0; i < NCH(ch); i += 2) { |
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1331 expr_ty expression; |
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|
1332 expression = ast_for_expr(c, CHILD(ch, i)); |
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1333 if (!expression) |
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1334 return NULL; |
|
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1335 asdl_seq_SET(elts, i / 2, expression); |
|
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1336 } |
|
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1337 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
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1338 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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|
1339 /* it's a set comprehension */ |
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1340 return ast_for_setcomp(c, ch); |
|
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1341 } else { |
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1342 /* it's a dict */ |
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1343 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
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|
1344 keys = asdl_seq_new(size, c->c_arena); |
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1345 if (!keys) |
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|
1346 return NULL; |
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1347 |
|
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|
1348 values = asdl_seq_new(size, c->c_arena); |
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changeset
|
1349 if (!values) |
|
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SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
changeset
|
1350 return NULL; |
|
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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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|
1351 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
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|
1352 for (i = 0; i < NCH(ch); i += 4) { |
|
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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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|
1353 expr_ty expression; |
|
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SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1354 |
|
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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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|
1355 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
changeset
|
1356 if (!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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|
1357 return NULL; |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1358 |
|
39693
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SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
changeset
|
1359 asdl_seq_SET(keys, i / 4, expression); |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
1360 |
|
39693
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SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
changeset
|
1361 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
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SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
changeset
|
1362 if (!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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|
1363 return NULL; |
|
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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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|
1364 |
|
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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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|
1365 asdl_seq_SET(values, i / 4, expression); |
|
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SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
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|
1366 } |
|
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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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|
1367 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
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SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
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diff
changeset
|
1368 } |
| 35742 | 1369 } |
| 1370 default: | |
|
40450
cc992d75d5b3
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|
1371 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
cc992d75d5b3
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parents:
40215
diff
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|
1372 return NULL; |
| 35742 | 1373 } |
| 1374 } | |
| 1375 | |
| 1376 static slice_ty | |
| 1377 ast_for_slice(struct compiling *c, const node *n) | |
| 1378 { | |
| 1379 node *ch; | |
| 1380 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1381 | |
| 1382 REQ(n, subscript); | |
| 1383 | |
| 1384 /* | |
|
39783
7a0ad110e91e
Patch #1550786: ellipsis literal.
Georg Brandl <georg@python.org>
parents:
39782
diff
changeset
|
1385 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1386 sliceop: ':' [test] |
| 1387 */ | |
| 1388 ch = CHILD(n, 0); | |
| 1389 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1390 /* 'step' variable hold no significance in terms of being used over | |
| 1391 other vars */ | |
| 1392 step = ast_for_expr(c, ch); | |
| 1393 if (!step) | |
| 1394 return NULL; | |
| 1395 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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|
1396 return Index(step, c->c_arena); |
| 35742 | 1397 } |
| 1398 | |
| 1399 if (TYPE(ch) == test) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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|
1400 lower = ast_for_expr(c, ch); |
| 35742 | 1401 if (!lower) |
| 1402 return NULL; | |
| 1403 } | |
| 1404 | |
| 1405 /* If there's an upper bound it's in the second or third position. */ | |
| 1406 if (TYPE(ch) == COLON) { | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
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diff
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|
1407 if (NCH(n) > 1) { |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
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diff
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|
1408 node *n2 = CHILD(n, 1); |
| 35742 | 1409 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1410 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
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|
1411 upper = ast_for_expr(c, n2); |
| 35742 | 1412 if (!upper) |
| 1413 return NULL; | |
| 1414 } | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1415 } |
| 35742 | 1416 } else if (NCH(n) > 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1417 node *n2 = CHILD(n, 2); |
| 35742 | 1418 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1419 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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changeset
|
1420 upper = ast_for_expr(c, n2); |
| 35742 | 1421 if (!upper) |
| 1422 return NULL; | |
| 1423 } | |
| 1424 } | |
| 1425 | |
| 1426 ch = CHILD(n, NCH(n) - 1); | |
| 1427 if (TYPE(ch) == sliceop) { | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
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36877
diff
changeset
|
1428 if (NCH(ch) == 1) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1429 /* No expression, so step is None */ |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1430 ch = CHILD(ch, 0); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1431 step = Name(new_identifier("None", c->c_arena), Load, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1432 LINENO(ch), ch->n_col_offset, c->c_arena); |
| 35742 | 1433 if (!step) |
| 1434 return NULL; | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
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36877
diff
changeset
|
1435 } else { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
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36877
diff
changeset
|
1436 ch = CHILD(ch, 1); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1437 if (TYPE(ch) == test) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1438 step = ast_for_expr(c, ch); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1439 if (!step) |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
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|
1440 return NULL; |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
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|
1441 } |
| 35742 | 1442 } |
| 1443 } | |
| 1444 | |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1445 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1446 } |
| 1447 | |
| 1448 static expr_ty | |
| 1449 ast_for_binop(struct compiling *c, const node *n) | |
| 1450 { | |
|
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|
1451 /* Must account for a sequence of expressions. |
|
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|
1452 How should A op B op C by represented? |
|
06145fbc7ab9
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|
1453 BinOp(BinOp(A, op, B), op, C). |
|
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|
1454 */ |
| 35742 | 1455 |
|
41554
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|
1456 int i, nops; |
|
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|
1457 expr_ty expr1, expr2, result; |
|
06145fbc7ab9
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|
1458 operator_ty newoperator; |
|
06145fbc7ab9
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|
1459 |
|
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|
1460 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
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|
1461 if (!expr1) |
|
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|
1462 return NULL; |
| 35742 | 1463 |
|
41554
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changeset
|
1464 expr2 = ast_for_expr(c, CHILD(n, 2)); |
|
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|
1465 if (!expr2) |
|
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|
1466 return NULL; |
|
06145fbc7ab9
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|
1467 |
|
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changeset
|
1468 newoperator = get_operator(CHILD(n, 1)); |
|
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|
1469 if (!newoperator) |
|
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|
1470 return NULL; |
| 35742 | 1471 |
|
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|
1472 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
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|
1473 c->c_arena); |
|
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|
1474 if (!result) |
|
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|
1475 return NULL; |
| 35742 | 1476 |
|
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|
1477 nops = (NCH(n) - 1) / 2; |
|
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|
1478 for (i = 1; i < nops; i++) { |
|
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|
1479 expr_ty tmp_result, tmp; |
|
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|
1480 const node* next_oper = CHILD(n, i * 2 + 1); |
|
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|
1481 |
|
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|
1482 newoperator = get_operator(next_oper); |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
1483 if (!newoperator) |
| 35742 | 1484 return NULL; |
| 1485 | |
|
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|
1486 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
|
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changeset
|
1487 if (!tmp) |
| 35742 | 1488 return NULL; |
| 1489 | |
|
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|
1490 tmp_result = BinOp(result, newoperator, tmp, |
|
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|
1491 LINENO(next_oper), next_oper->n_col_offset, |
|
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|
1492 c->c_arena); |
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|
1493 if (!tmp) |
|
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|
1494 return NULL; |
|
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|
1495 result = tmp_result; |
|
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|
1496 } |
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|
1497 return result; |
| 35742 | 1498 } |
| 1499 | |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
1500 static expr_ty |
|
842caa245917
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diff
changeset
|
1501 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
|
842caa245917
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|
1502 { |
|
36686
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Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
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diff
changeset
|
1503 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
|
8611f39cd82b
Fix parsing of subscriptlist.
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diff
changeset
|
1504 subscriptlist: subscript (',' subscript)* [','] |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1505 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
8611f39cd82b
Fix parsing of subscriptlist.
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diff
changeset
|
1506 */ |
|
35799
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
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|
1507 REQ(n, trailer); |
|
842caa245917
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
changeset
|
1508 if (TYPE(CHILD(n, 0)) == LPAR) { |
|
842caa245917
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diff
changeset
|
1509 if (NCH(n) == 2) |
|
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|
1510 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
f731859e9b3b
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|
1511 n->n_col_offset, c->c_arena); |
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diff
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|
1512 else |
|
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|
1513 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
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|
1514 } |
|
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|
1515 else if (TYPE(CHILD(n, 0)) == DOT ) { |
|
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|
1516 return Attribute(left_expr, NEW_IDENTIFIER(CHILD(n, 1)), Load, |
|
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|
1517 LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1518 } |
|
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|
1519 else { |
|
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|
1520 REQ(CHILD(n, 0), LSQB); |
|
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diff
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|
1521 REQ(CHILD(n, 2), RSQB); |
|
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|
1522 n = CHILD(n, 1); |
|
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|
1523 if (NCH(n) == 1) { |
|
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|
1524 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
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|
1525 if (!slc) |
|
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|
1526 return NULL; |
|
37879
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diff
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|
1527 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
|
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|
1528 c->c_arena); |
|
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|
1529 } |
|
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|
1530 else { |
|
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|
1531 /* The grammar is ambiguous here. The ambiguity is resolved |
|
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|
1532 by treating the sequence as a tuple literal if there are |
|
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|
1533 no slice features. |
|
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|
1534 */ |
|
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|
1535 int j; |
|
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|
1536 slice_ty slc; |
|
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|
1537 expr_ty e; |
|
40941
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|
1538 int simple = 1; |
|
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|
1539 asdl_seq *slices, *elts; |
|
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|
1540 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
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|
1541 if (!slices) |
|
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|
1542 return NULL; |
|
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|
1543 for (j = 0; j < NCH(n); j += 2) { |
|
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|
1544 slc = ast_for_slice(c, CHILD(n, j)); |
|
36065
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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|
1545 if (!slc) |
|
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|
1546 return NULL; |
|
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|
1547 if (slc->kind != Index_kind) |
|
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|
1548 simple = 0; |
|
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|
1549 asdl_seq_SET(slices, j / 2, slc); |
|
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|
1550 } |
|
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|
1551 if (!simple) { |
|
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|
1552 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
|
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|
1553 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1554 } |
|
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|
1555 /* extract Index values and put them in a Tuple */ |
|
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|
1556 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
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|
1557 if (!elts) |
|
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|
1558 return NULL; |
|
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|
1559 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
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|
1560 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
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|
1561 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
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|
1562 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
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|
1563 } |
|
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|
1564 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1565 if (!e) |
|
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|
1566 return NULL; |
|
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|
1567 return Subscript(left_expr, Index(e, c->c_arena), |
|
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|
1568 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1569 } |
|
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|
1570 } |
|
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|
1571 } |
|
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|
1572 |
|
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|
1573 static expr_ty |
|
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|
1574 ast_for_factor(struct compiling *c, const node *n) |
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1575 { |
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|
1576 node *pfactor, *ppower, *patom, *pnum; |
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1577 expr_ty expression; |
|
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|
1578 |
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1579 /* If the unary - operator is applied to a constant, don't generate |
|
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1580 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
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1581 constant. The peephole optimizer already does something like |
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1582 this but it doesn't handle the case where the constant is |
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1583 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
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1584 PyLongObject. |
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1585 */ |
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1586 if (TYPE(CHILD(n, 0)) == MINUS |
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1587 && NCH(n) == 2 |
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1588 && TYPE((pfactor = CHILD(n, 1))) == factor |
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1589 && NCH(pfactor) == 1 |
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1590 && TYPE((ppower = CHILD(pfactor, 0))) == power |
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1591 && NCH(ppower) == 1 |
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1592 && TYPE((patom = CHILD(ppower, 0))) == atom |
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1593 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
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1594 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
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1595 if (s == NULL) |
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1596 return NULL; |
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1597 s[0] = '-'; |
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1598 strcpy(s + 1, STR(pnum)); |
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1599 PyObject_FREE(STR(pnum)); |
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1600 STR(pnum) = s; |
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1601 return ast_for_atom(c, patom); |
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1602 } |
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1603 |
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1604 expression = ast_for_expr(c, CHILD(n, 1)); |
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1605 if (!expression) |
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1606 return NULL; |
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1607 |
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1608 switch (TYPE(CHILD(n, 0))) { |
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1609 case PLUS: |
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1610 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
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1611 c->c_arena); |
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1612 case MINUS: |
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1613 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
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1614 c->c_arena); |
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1615 case TILDE: |
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|
1616 return UnaryOp(Invert, expression, LINENO(n), |
|
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Thomas Wouters <thomas@python.org>
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|
1617 n->n_col_offset, c->c_arena); |
|
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|
1618 } |
|
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|
1619 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
|
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|
1620 TYPE(CHILD(n, 0))); |
|
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|
1621 return NULL; |
|
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|
1622 } |
|
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|
1623 |
|
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|
1624 static expr_ty |
|
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diff
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|
1625 ast_for_power(struct compiling *c, const node *n) |
|
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Refactor code for translating "power" nodes.
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|
1626 { |
|
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Refactor code for translating "power" nodes.
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|
1627 /* power: atom trailer* ('**' factor)* |
|
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|
1628 */ |
|
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diff
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|
1629 int i; |
|
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diff
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|
1630 expr_ty e, tmp; |
|
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diff
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|
1631 REQ(n, power); |
|
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|
1632 e = ast_for_atom(c, CHILD(n, 0)); |
|
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|
1633 if (!e) |
|
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parents:
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diff
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|
1634 return NULL; |
|
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Refactor code for translating "power" nodes.
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parents:
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|
1635 if (NCH(n) == 1) |
|
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Refactor code for translating "power" nodes.
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|
1636 return e; |
|
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Refactor code for translating "power" nodes.
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diff
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|
1637 for (i = 1; i < NCH(n); i++) { |
|
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Refactor code for translating "power" nodes.
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diff
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|
1638 node *ch = CHILD(n, i); |
|
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Refactor code for translating "power" nodes.
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parents:
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diff
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|
1639 if (TYPE(ch) != trailer) |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1640 break; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1641 tmp = ast_for_trailer(c, ch, e); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
1642 if (!tmp) |
|
35799
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1643 return NULL; |
|
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|
1644 tmp->lineno = e->lineno; |
|
cc992d75d5b3
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|
1645 tmp->col_offset = e->col_offset; |
|
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|
1646 e = tmp; |
|
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parents:
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|
1647 } |
|
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Refactor code for translating "power" nodes.
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parents:
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diff
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|
1648 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1649 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
1650 if (!f) |
|
35799
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1651 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1652 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1653 if (!tmp) |
|
35799
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1654 return NULL; |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1655 e = tmp; |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1656 } |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1657 return e; |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
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|
1658 } |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
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|
1659 |
|
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|
1660 static expr_ty |
|
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|
1661 ast_for_starred(struct compiling *c, const node *n) |
|
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|
1662 { |
|
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|
1663 expr_ty tmp; |
|
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|
1664 REQ(n, star_expr); |
|
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|
1665 |
|
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|
1666 tmp = ast_for_expr(c, CHILD(n, 1)); |
|
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|
1667 if (!tmp) |
|
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|
1668 return NULL; |
|
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|
1669 |
|
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|
1670 /* The Load context is changed later. */ |
|
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|
1671 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1672 } |
|
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|
1673 |
|
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changeset
|
1674 |
| 35742 | 1675 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1676 */ | |
| 1677 | |
| 1678 static expr_ty | |
| 1679 ast_for_expr(struct compiling *c, const node *n) | |
| 1680 { | |
| 1681 /* handle the full range of simple expressions | |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1682 test: or_test ['if' or_test 'else' test] | lambdef |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1683 test_nocond: or_test | lambdef_nocond |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1684 or_test: and_test ('or' and_test)* |
| 35742 | 1685 and_test: not_test ('and' not_test)* |
| 1686 not_test: 'not' not_test | comparison | |
| 1687 comparison: expr (comp_op expr)* | |
| 1688 expr: xor_expr ('|' xor_expr)* | |
| 1689 xor_expr: and_expr ('^' and_expr)* | |
| 1690 and_expr: shift_expr ('&' shift_expr)* | |
| 1691 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1692 arith_expr: term (('+'|'-') term)* | |
| 1693 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1694 factor: ('+'|'-'|'~') factor | power | |
| 1695 power: atom trailer* ('**' factor)* | |
| 1696 */ | |
| 1697 | |
| 1698 asdl_seq *seq; | |
| 1699 int i; | |
| 1700 | |
| 1701 loop: | |
| 1702 switch (TYPE(n)) { | |
| 1703 case test: | |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1704 case test_nocond: |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1705 if (TYPE(CHILD(n, 0)) == lambdef || |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1706 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1707 return ast_for_lambdef(c, CHILD(n, 0)); |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1708 else if (NCH(n) > 1) |
|
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1709 return ast_for_ifexpr(c, n); |
|
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cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
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|
1710 /* Fallthrough */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1711 case or_test: |
| 35742 | 1712 case and_test: |
| 1713 if (NCH(n) == 1) { | |
| 1714 n = CHILD(n, 0); | |
| 1715 goto loop; | |
| 1716 } | |
|
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
|
1717 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1718 if (!seq) |
| 1719 return NULL; | |
| 1720 for (i = 0; i < NCH(n); i += 2) { | |
| 1721 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1722 if (!e) | |
| 1723 return NULL; | |
| 1724 asdl_seq_SET(seq, i / 2, e); | |
| 1725 } | |
| 1726 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1727 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1728 c->c_arena); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
1729 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
|
1730 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1731 case not_test: |
| 1732 if (NCH(n) == 1) { | |
| 1733 n = CHILD(n, 0); | |
| 1734 goto loop; | |
| 1735 } | |
| 1736 else { | |
| 1737 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1738 if (!expression) | |
| 1739 return NULL; | |
| 1740 | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1741 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1742 c->c_arena); |
| 35742 | 1743 } |
| 1744 case comparison: | |
| 1745 if (NCH(n) == 1) { | |
| 1746 n = CHILD(n, 0); | |
| 1747 goto loop; | |
| 1748 } | |
| 1749 else { | |
| 1750 expr_ty expression; | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1751 asdl_int_seq *ops; |
|
40450
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
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|
1752 asdl_seq *cmps; |
|
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
|
1753 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1754 if (!ops) |
| 1755 return NULL; | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1756 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1757 if (!cmps) { |
| 1758 return NULL; | |
| 1759 } | |
| 1760 for (i = 1; i < NCH(n); i += 2) { | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1761 cmpop_ty newoperator; |
| 35742 | 1762 |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1763 newoperator = ast_for_comp_op(CHILD(n, i)); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
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diff
changeset
|
1764 if (!newoperator) { |
| 35742 | 1765 return NULL; |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
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diff
changeset
|
1766 } |
| 35742 | 1767 |
| 1768 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1769 if (!expression) { |
| 35742 | 1770 return NULL; |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
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changeset
|
1771 } |
| 35742 | 1772 |
|
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f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
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changeset
|
1773 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1774 asdl_seq_SET(cmps, i / 2, expression); |
| 1775 } | |
| 1776 expression = ast_for_expr(c, CHILD(n, 0)); | |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1777 if (!expression) { |
| 35742 | 1778 return NULL; |
|
40450
cc992d75d5b3
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parents:
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diff
changeset
|
1779 } |
| 35742 | 1780 |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
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diff
changeset
|
1781 return Compare(expression, ops, cmps, LINENO(n), |
|
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|
1782 n->n_col_offset, c->c_arena); |
| 35742 | 1783 } |
| 1784 break; | |
| 1785 | |
|
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1786 case star_expr: |
|
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1787 if (TYPE(CHILD(n, 0)) == STAR) { |
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1788 return ast_for_starred(c, n); |
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1789 } |
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1790 /* Fallthrough */ |
| 35742 | 1791 /* The next five cases all handle BinOps. The main body of code |
| 1792 is the same in each case, but the switch turned inside out to | |
| 1793 reuse the code for each type of operator. | |
| 1794 */ | |
| 1795 case expr: | |
| 1796 case xor_expr: | |
| 1797 case and_expr: | |
| 1798 case shift_expr: | |
| 1799 case arith_expr: | |
| 1800 case term: | |
| 1801 if (NCH(n) == 1) { | |
| 1802 n = CHILD(n, 0); | |
| 1803 goto loop; | |
| 1804 } | |
| 1805 return ast_for_binop(c, n); | |
| 1806 case yield_expr: { | |
|
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1807 expr_ty exp = NULL; |
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1808 if (NCH(n) == 2) { |
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1809 exp = ast_for_testlist(c, CHILD(n, 1)); |
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1810 if (!exp) |
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1811 return NULL; |
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1812 } |
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1813 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
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1814 } |
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1815 case factor: |
| 35742 | 1816 if (NCH(n) == 1) { |
| 1817 n = CHILD(n, 0); | |
| 1818 goto loop; | |
| 1819 } | |
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1820 return ast_for_factor(c, n); |
|
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1821 case power: |
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1822 return ast_for_power(c, n); |
| 35742 | 1823 default: |
|
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1824 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1825 return NULL; |
| 1826 } | |
|
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1827 /* should never get here unless if error is set */ |
| 35742 | 1828 return NULL; |
| 1829 } | |
| 1830 | |
| 1831 static expr_ty | |
| 1832 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1833 { | |
| 1834 /* | |
| 1835 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1836 | '**' test) | |
|
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1837 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1838 */ |
| 1839 | |
| 1840 int i, nargs, nkeywords, ngens; | |
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1841 asdl_seq *args; |
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1842 asdl_seq *keywords; |
| 35742 | 1843 expr_ty vararg = NULL, kwarg = NULL; |
| 1844 | |
| 1845 REQ(n, arglist); | |
| 1846 | |
| 1847 nargs = 0; | |
| 1848 nkeywords = 0; | |
| 1849 ngens = 0; | |
| 1850 for (i = 0; i < NCH(n); i++) { | |
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1851 node *ch = CHILD(n, i); |
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1852 if (TYPE(ch) == argument) { |
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1853 if (NCH(ch) == 1) |
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1854 nargs++; |
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1855 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1856 ngens++; |
| 35742 | 1857 else |
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1858 nkeywords++; |
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1859 } |
| 35742 | 1860 } |
| 1861 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
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1862 ast_error(n, "Generator expression must be parenthesized " |
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1863 "if not sole argument"); |
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1864 return NULL; |
| 35742 | 1865 } |
| 1866 | |
| 1867 if (nargs + nkeywords + ngens > 255) { | |
| 1868 ast_error(n, "more than 255 arguments"); | |
| 1869 return NULL; | |
| 1870 } | |
| 1871 | |
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1872 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1873 if (!args) |
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1874 return NULL; |
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1875 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1876 if (!keywords) |
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1877 return NULL; |
| 35742 | 1878 nargs = 0; |
| 1879 nkeywords = 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 expr_ty e; |
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1884 if (NCH(ch) == 1) { |
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1885 if (nkeywords) { |
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1886 ast_error(CHILD(ch, 0), |
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1887 "non-keyword arg after keyword arg"); |
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1888 return NULL; |
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1889 } |
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1890 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1891 if (!e) |
|
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1892 return NULL; |
|
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1893 asdl_seq_SET(args, nargs++, e); |
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1894 } |
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1895 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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1896 e = ast_for_genexp(c, ch); |
| 35742 | 1897 if (!e) |
|
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1898 return NULL; |
|
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1899 asdl_seq_SET(args, nargs++, e); |
| 35742 | 1900 } |
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1901 else { |
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1902 keyword_ty kw; |
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1903 identifier key; |
| 35742 | 1904 |
|
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1905 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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1906 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1907 if (!e) |
|
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1908 return NULL; |
| 35742 | 1909 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1910 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 1911 * SF bug 132313 points out that complaining about a keyword | |
| 1912 * then is very confusing. | |
| 1913 */ | |
| 1914 if (e->kind == Lambda_kind) { | |
| 1915 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
|
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1916 return NULL; |
| 35742 | 1917 } else if (e->kind != Name_kind) { |
| 1918 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
|
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1919 return NULL; |
|
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1920 } else if (forbidden_name(e, ch)) { |
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1921 return NULL; |
|
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1922 } |
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1923 key = e->v.Name.id; |
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1924 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 1925 if (!e) |
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1926 return NULL; |
|
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1927 kw = keyword(key, e, c->c_arena); |
| 35742 | 1928 if (!kw) |
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1929 return NULL; |
|
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1930 asdl_seq_SET(keywords, nkeywords++, kw); |
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1931 } |
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1932 } |
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1933 else if (TYPE(ch) == STAR) { |
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1934 vararg = ast_for_expr(c, CHILD(n, i+1)); |
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1935 i++; |
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1936 } |
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1937 else if (TYPE(ch) == DOUBLESTAR) { |
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1938 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
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1939 i++; |
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1940 } |
| 35742 | 1941 } |
| 1942 | |
|
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1943 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 1944 } |
| 1945 | |
| 1946 static expr_ty | |
|
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1947 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 1948 { |
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1949 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
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1950 /* testlist: test (',' test)* [','] */ |
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1951 /* testlist1: test (',' test)* */ |
| 35742 | 1952 assert(NCH(n) > 0); |
|
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1953 if (TYPE(n) == testlist_comp) { |
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1954 if (NCH(n) > 1) |
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1955 assert(TYPE(CHILD(n, 1)) != comp_for); |
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1956 } |
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1957 else { |
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1958 assert(TYPE(n) == testlist || |
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1959 TYPE(n) == testlist1); |
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1960 } |
| 35742 | 1961 if (NCH(n) == 1) |
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1962 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 1963 else { |
| 1964 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 1965 if (!tmp) | |
| 1966 return NULL; | |
|
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1967 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1968 } |
|
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1969 } |
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1970 |
| 35742 | 1971 static stmt_ty |
| 1972 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 1973 { | |
| 1974 REQ(n, expr_stmt); | |
| 1975 /* expr_stmt: testlist (augassign (yield_expr|testlist) | |
| 1976 | ('=' (yield_expr|testlist))*) | |
| 1977 testlist: test (',' test)* [','] | |
| 1978 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | |
|
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1979 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 1980 test: ... here starts the operator precendence dance |
| 1981 */ | |
| 1982 | |
| 1983 if (NCH(n) == 1) { | |
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1984 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 1985 if (!e) |
| 1986 return NULL; | |
| 1987 | |
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1988 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1989 } |
| 1990 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 1991 expr_ty expr1, expr2; | |
|
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1992 operator_ty newoperator; |
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1993 node *ch = CHILD(n, 0); |
| 35742 | 1994 |
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1995 expr1 = ast_for_testlist(c, ch); |
| 35742 | 1996 if (!expr1) |
| 1997 return NULL; | |
|
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1998 /* TODO(nas): Remove duplicated error checks (set_context does it) */ |
|
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1999 switch (expr1->kind) { |
|
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2000 case GeneratorExp_kind: |
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2001 ast_error(ch, "augmented assignment to generator " |
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2002 "expression not possible"); |
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2003 return NULL; |
|
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2004 case Yield_kind: |
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2005 ast_error(ch, "augmented assignment to yield " |
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2006 "expression not possible"); |
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2007 return NULL; |
|
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2008 case Name_kind: { |
|
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2009 if (forbidden_name(expr1, ch)) |
|
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2010 return NULL; |
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2011 break; |
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2012 } |
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2013 case Attribute_kind: |
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2014 case Subscript_kind: |
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2015 break; |
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2016 default: |
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2017 ast_error(ch, "illegal expression for augmented " |
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2018 "assignment"); |
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2019 return NULL; |
| 35742 | 2020 } |
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2021 set_context(expr1, Store, ch); |
| 35742 | 2022 |
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2023 ch = CHILD(n, 2); |
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2024 if (TYPE(ch) == testlist) |
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2025 expr2 = ast_for_testlist(c, ch); |
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2026 else |
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2027 expr2 = ast_for_expr(c, ch); |
|
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2028 if (!expr2) |
| 35742 | 2029 return NULL; |
| 2030 | |
|
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2031 newoperator = ast_for_augassign(CHILD(n, 1)); |
|
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2032 if (!newoperator) |
| 35742 | 2033 return NULL; |
| 2034 | |
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2035 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2036 } |
| 2037 else { | |
|
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2038 int i; |
|
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2039 asdl_seq *targets; |
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2040 node *value; |
| 35742 | 2041 expr_ty expression; |
| 2042 | |
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2043 /* a normal assignment */ |
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2044 REQ(CHILD(n, 1), EQUAL); |
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2045 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
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2046 if (!targets) |
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2047 return NULL; |
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2048 for (i = 0; i < NCH(n) - 2; i += 2) { |
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2049 expr_ty e; |
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2050 node *ch = CHILD(n, i); |
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2051 if (TYPE(ch) == yield_expr) { |
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2052 ast_error(ch, "assignment to yield expression not possible"); |
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2053 return NULL; |
|
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2054 } |
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2055 e = ast_for_testlist(c, ch); |
| 35742 | 2056 |
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2057 /* set context to assign */ |
|
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|
2058 if (!e) |
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2059 return NULL; |
| 35742 | 2060 |
|
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2061 if (!set_context(e, Store, CHILD(n, i))) |
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2062 return NULL; |
| 35742 | 2063 |
|
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|
2064 asdl_seq_SET(targets, i / 2, e); |
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2065 } |
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2066 value = CHILD(n, NCH(n) - 1); |
|
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|
2067 if (TYPE(value) == testlist) |
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|
2068 expression = ast_for_testlist(c, value); |
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2069 else |
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|
2070 expression = ast_for_expr(c, value); |
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|
2071 if (!expression) |
|
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|
2072 return NULL; |
|
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|
2073 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2074 } |
| 2075 } | |
| 2076 | |
| 2077 static asdl_seq * | |
|
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|
2078 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2079 { |
| 2080 asdl_seq *seq; | |
| 2081 int i; | |
| 2082 expr_ty e; | |
| 2083 | |
| 2084 REQ(n, exprlist); | |
| 2085 | |
|
36065
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|
2086 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2087 if (!seq) |
|
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|
2088 return NULL; |
| 35742 | 2089 for (i = 0; i < NCH(n); i += 2) { |
|
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2090 e = ast_for_expr(c, CHILD(n, i)); |
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2091 if (!e) |
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2092 return NULL; |
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|
2093 asdl_seq_SET(seq, i / 2, e); |
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|
2094 if (context && !set_context(e, context, CHILD(n, i))) |
|
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|
2095 return NULL; |
| 35742 | 2096 } |
| 2097 return seq; | |
| 2098 } | |
| 2099 | |
| 2100 static stmt_ty | |
| 2101 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2102 { | |
| 2103 asdl_seq *expr_list; | |
| 2104 | |
| 2105 /* del_stmt: 'del' exprlist */ | |
| 2106 REQ(n, del_stmt); | |
| 2107 | |
| 2108 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2109 if (!expr_list) | |
| 2110 return NULL; | |
|
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|
2111 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2112 } |
| 2113 | |
| 2114 static stmt_ty | |
| 2115 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2116 { | |
| 2117 /* | |
| 2118 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2119 | yield_stmt | |
| 2120 break_stmt: 'break' | |
| 2121 continue_stmt: 'continue' | |
| 2122 return_stmt: 'return' [testlist] | |
| 2123 yield_stmt: yield_expr | |
| 2124 yield_expr: 'yield' testlist | |
| 2125 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2126 */ | |
| 2127 node *ch; | |
| 2128 | |
| 2129 REQ(n, flow_stmt); | |
| 2130 ch = CHILD(n, 0); | |
| 2131 switch (TYPE(ch)) { | |
| 2132 case break_stmt: | |
|
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|
2133 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2134 case continue_stmt: |
|
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|
2135 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2136 case yield_stmt: { /* will reduce to yield_expr */ |
|
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2137 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); |
|
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2138 if (!exp) |
|
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|
2139 return NULL; |
|
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57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2140 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2141 } |
| 2142 case return_stmt: | |
| 2143 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
|
2144 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2145 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2146 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2147 if (!expression) |
| 2148 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2149 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2150 } |
| 2151 case raise_stmt: | |
| 2152 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
|
2153 return Raise(NULL, NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2154 else if (NCH(ch) == 2) { |
| 2155 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); | |
| 2156 if (!expression) | |
| 2157 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2158 return Raise(expression, NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2159 } |
| 2160 else if (NCH(ch) == 4) { | |
| 2161 expr_ty expr1, expr2; | |
| 2162 | |
| 2163 expr1 = ast_for_expr(c, CHILD(ch, 1)); | |
| 2164 if (!expr1) | |
| 2165 return NULL; | |
| 2166 expr2 = ast_for_expr(c, CHILD(ch, 3)); | |
| 2167 if (!expr2) | |
| 2168 return NULL; | |
| 2169 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2170 return Raise(expr1, expr2, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2171 } |
| 2172 else if (NCH(ch) == 6) { | |
| 2173 expr_ty expr1, expr2, expr3; | |
| 2174 | |
| 2175 expr1 = ast_for_expr(c, CHILD(ch, 1)); | |
| 2176 if (!expr1) | |
| 2177 return NULL; | |
| 2178 expr2 = ast_for_expr(c, CHILD(ch, 3)); | |
| 2179 if (!expr2) | |
| 2180 return NULL; | |
| 2181 expr3 = ast_for_expr(c, CHILD(ch, 5)); | |
| 2182 if (!expr3) | |
| 2183 return NULL; | |
| 2184 | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2185 return Raise(expr1, expr2, expr3, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2186 } |
| 2187 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2188 PyErr_Format(PyExc_SystemError, |
| 35742 | 2189 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2190 return NULL; | |
| 2191 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2192 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2193 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
|
2194 return NULL; |
| 35742 | 2195 } |
| 2196 | |
| 2197 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
|
2198 alias_for_import_name(struct compiling *c, const node *n) |
| 35742 | 2199 { |
| 2200 /* | |
|
36742
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
36718
diff
changeset
|
2201 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
|
2202 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2203 dotted_name: NAME ('.' NAME)* |
| 2204 */ | |
|
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
|
2205 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
|
2206 |
| 35742 | 2207 loop: |
| 2208 switch (TYPE(n)) { | |
| 2209 case import_as_name: | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2210 str = NULL; |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2211 if (NCH(n) == 3) { |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2212 str = NEW_IDENTIFIER(CHILD(n, 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2213 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2214 return alias(NEW_IDENTIFIER(CHILD(n, 0)), str, c->c_arena); |
| 35742 | 2215 case dotted_as_name: |
| 2216 if (NCH(n) == 1) { | |
| 2217 n = CHILD(n, 0); | |
| 2218 goto loop; | |
| 2219 } | |
| 2220 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
|
2221 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
|
2222 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2223 return NULL; |
| 35742 | 2224 assert(!a->asname); |
| 2225 a->asname = NEW_IDENTIFIER(CHILD(n, 2)); | |
| 2226 return a; | |
| 2227 } | |
| 2228 break; | |
| 2229 case dotted_name: | |
| 2230 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
|
2231 return alias(NEW_IDENTIFIER(CHILD(n, 0)), NULL, c->c_arena); |
| 35742 | 2232 else { |
| 2233 /* 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
|
2234 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2235 size_t len; |
| 35742 | 2236 char *s; |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2237 PyObject *uni; |
| 35742 | 2238 |
| 2239 len = 0; | |
| 2240 for (i = 0; i < NCH(n); i += 2) | |
| 2241 /* length of string plus one for the dot */ | |
| 2242 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2243 len--; /* the last name doesn't have a dot */ | |
| 2244 str = PyString_FromStringAndSize(NULL, len); | |
| 2245 if (!str) | |
| 2246 return NULL; | |
| 2247 s = PyString_AS_STRING(str); | |
| 2248 if (!s) | |
| 2249 return NULL; | |
| 2250 for (i = 0; i < NCH(n); i += 2) { | |
| 2251 char *sch = STR(CHILD(n, i)); | |
| 2252 strcpy(s, STR(CHILD(n, i))); | |
| 2253 s += strlen(sch); | |
| 2254 *s++ = '.'; | |
| 2255 } | |
| 2256 --s; | |
| 2257 *s = '\0'; | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2258 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
|
2259 PyString_GET_SIZE(str), |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2260 NULL); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2261 Py_DECREF(str); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2262 if (!uni) |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2263 return NULL; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2264 str = uni; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2265 PyUnicode_InternInPlace(&str); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2266 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
|
2267 return alias(str, NULL, c->c_arena); |
| 35742 | 2268 } |
| 2269 break; | |
| 2270 case STAR: | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2271 str = PyUnicode_InternFromString("*"); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2272 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
|
2273 return alias(str, NULL, c->c_arena); |
| 35742 | 2274 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2275 PyErr_Format(PyExc_SystemError, |
| 35742 | 2276 "unexpected import name: %d", TYPE(n)); |
| 2277 return NULL; | |
| 2278 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2279 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2280 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2281 return NULL; |
| 2282 } | |
| 2283 | |
| 2284 static stmt_ty | |
| 2285 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2286 { | |
| 2287 /* | |
| 2288 import_stmt: import_name | import_from | |
| 2289 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
|
2290 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
|
2291 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2292 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2293 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2294 int col_offset; |
| 35742 | 2295 int i; |
| 2296 asdl_seq *aliases; | |
| 2297 | |
| 2298 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
|
2299 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2300 col_offset = n->n_col_offset; |
| 35742 | 2301 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2302 if (TYPE(n) == import_name) { |
| 35742 | 2303 n = CHILD(n, 1); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2304 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2305 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
|
2306 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2307 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2308 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
|
2309 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
|
2310 if (!import_alias) |
| 35742 | 2311 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2312 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2313 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2314 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2315 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2316 else if (TYPE(n) == import_from) { |
| 35742 | 2317 int n_children; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2318 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2319 alias_ty mod = NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2320 identifier modname; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2321 |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2322 /* 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
|
2323 optional module name */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2324 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
|
2325 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
|
2326 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
|
2327 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2328 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2329 } 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
|
2330 /* 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
|
2331 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2332 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2333 } 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
|
2334 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2335 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2336 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2337 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2338 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
|
2339 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2340 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2341 /* from ... import * */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2342 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2343 n_children = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2344 if (ndots) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2345 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
|
2346 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2347 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2348 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2349 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2350 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2351 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2352 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2353 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2354 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2355 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2356 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2357 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2358 if (n_children % 2 == 0) { |
| 35742 | 2359 ast_error(n, "trailing comma not allowed without" |
| 2360 " surrounding parentheses"); | |
| 2361 return NULL; | |
| 2362 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2363 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2364 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2365 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
|
2366 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2367 } |
| 35742 | 2368 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2369 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
|
2370 if (!aliases) |
| 35742 | 2371 return NULL; |
| 2372 | |
| 2373 /* 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
|
2374 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
|
2375 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
|
2376 if (!import_alias) |
| 35742 | 2377 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2378 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2379 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2380 else { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2381 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
|
2382 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
|
2383 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2384 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2385 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
|
2386 } |
| 35742 | 2387 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2388 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2389 modname = mod->name; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2390 else |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2391 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
|
2392 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
|
2393 c->c_arena); |
| 35742 | 2394 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2395 PyErr_Format(PyExc_SystemError, |
| 35742 | 2396 "unknown import statement: starts with command '%s'", |
| 2397 STR(CHILD(n, 0))); | |
| 2398 return NULL; | |
| 2399 } | |
| 2400 | |
| 2401 static stmt_ty | |
| 2402 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2403 { | |
| 2404 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2405 identifier name; | |
| 2406 asdl_seq *s; | |
| 2407 int i; | |
| 2408 | |
| 2409 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
|
2410 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2411 if (!s) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2412 return NULL; |
| 35742 | 2413 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
|
2414 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
|
2415 if (!name) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2416 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2417 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2418 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2419 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2420 } |
| 2421 | |
| 2422 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2423 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
|
2424 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2425 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2426 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2427 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2428 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2429 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2430 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2431 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
|
2432 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2433 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2434 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2435 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2436 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2437 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2438 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2439 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2440 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
|
2441 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2442 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2443 static stmt_ty |
| 35742 | 2444 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2445 { | |
| 2446 /* assert_stmt: 'assert' test [',' test] */ | |
| 2447 REQ(n, assert_stmt); | |
| 2448 if (NCH(n) == 2) { | |
| 2449 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2450 if (!expression) | |
| 2451 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2452 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2453 } |
| 2454 else if (NCH(n) == 4) { | |
| 2455 expr_ty expr1, expr2; | |
| 2456 | |
| 2457 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2458 if (!expr1) | |
| 2459 return NULL; | |
| 2460 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2461 if (!expr2) | |
| 2462 return NULL; | |
| 2463 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2464 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2465 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2466 PyErr_Format(PyExc_SystemError, |
| 35742 | 2467 "improper number of parts to 'assert' statement: %d", |
| 2468 NCH(n)); | |
| 2469 return NULL; | |
| 2470 } | |
| 2471 | |
| 2472 static asdl_seq * | |
| 2473 ast_for_suite(struct compiling *c, const node *n) | |
| 2474 { | |
| 2475 /* 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
|
2476 asdl_seq *seq; |
| 35742 | 2477 stmt_ty s; |
| 2478 int i, total, num, end, pos = 0; | |
| 2479 node *ch; | |
| 2480 | |
| 2481 REQ(n, suite); | |
| 2482 | |
| 2483 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
|
2484 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2485 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2486 return NULL; |
| 35742 | 2487 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
|
2488 n = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2489 /* 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
|
2490 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
|
2491 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2492 end = NCH(n) - 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2493 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
|
2494 end--; |
| 35742 | 2495 /* 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
|
2496 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
|
2497 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2498 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
|
2499 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2500 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2501 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
|
2502 } |
| 35742 | 2503 } |
| 2504 else { | |
|
40450
cc992d75d5b3
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|
2505 for (i = 2; i < (NCH(n) - 1); i++) { |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2506 ch = CHILD(n, i); |
|
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Four months of trunk changes (including a few releases...)
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|
2507 REQ(ch, stmt); |
|
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Four months of trunk changes (including a few releases...)
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|
2508 num = num_stmts(ch); |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2509 if (num == 1) { |
|
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Four months of trunk changes (including a few releases...)
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|
2510 /* small_stmt or compound_stmt with only one child */ |
|
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|
2511 s = ast_for_stmt(c, ch); |
|
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Four months of trunk changes (including a few releases...)
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|
2512 if (!s) |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2513 return NULL; |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2514 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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diff
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|
2515 } |
|
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Four months of trunk changes (including a few releases...)
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diff
changeset
|
2516 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2517 int j; |
|
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Four months of trunk changes (including a few releases...)
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|
2518 ch = CHILD(ch, 0); |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2519 REQ(ch, simple_stmt); |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2520 for (j = 0; j < NCH(ch); j += 2) { |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2521 /* statement terminates with a semi-colon ';' */ |
|
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Four months of trunk changes (including a few releases...)
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parents:
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diff
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|
2522 if (NCH(CHILD(ch, j)) == 0) { |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2523 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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|
2524 break; |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2525 } |
|
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Four months of trunk changes (including a few releases...)
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diff
changeset
|
2526 s = ast_for_stmt(c, CHILD(ch, j)); |
|
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Four months of trunk changes (including a few releases...)
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|
2527 if (!s) |
|
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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|
2528 return NULL; |
|
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Four months of trunk changes (including a few releases...)
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|
2529 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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diff
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|
2530 } |
|
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Four months of trunk changes (including a few releases...)
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diff
changeset
|
2531 } |
|
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|
2532 } |
| 35742 | 2533 } |
| 2534 assert(pos == seq->size); | |
| 2535 return seq; | |
| 2536 } | |
| 2537 | |
| 2538 static stmt_ty | |
| 2539 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2540 { | |
| 2541 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2542 ['else' ':' suite] | |
| 2543 */ | |
| 2544 char *s; | |
| 2545 | |
| 2546 REQ(n, if_stmt); | |
| 2547 | |
| 2548 if (NCH(n) == 4) { | |
| 2549 expr_ty expression; | |
| 2550 asdl_seq *suite_seq; | |
| 2551 | |
| 2552 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2553 if (!expression) | |
| 2554 return NULL; | |
| 2555 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
2556 if (!suite_seq) |
| 35742 | 2557 return NULL; |
| 2558 | |
|
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|
2559 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, |
|
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|
2560 c->c_arena); |
| 35742 | 2561 } |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2562 |
| 35742 | 2563 s = STR(CHILD(n, 4)); |
| 2564 /* s[2], the third character in the string, will be | |
| 2565 's' for el_s_e, or | |
| 2566 'i' for el_i_f | |
| 2567 */ | |
| 2568 if (s[2] == 's') { | |
| 2569 expr_ty expression; | |
| 2570 asdl_seq *seq1, *seq2; | |
| 2571 | |
| 2572 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2573 if (!expression) | |
| 2574 return NULL; | |
| 2575 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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changeset
|
2576 if (!seq1) |
| 35742 | 2577 return NULL; |
| 2578 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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diff
changeset
|
2579 if (!seq2) |
| 35742 | 2580 return NULL; |
| 2581 | |
|
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|
2582 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, |
|
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|
2583 c->c_arena); |
| 35742 | 2584 } |
| 2585 else if (s[2] == 'i') { | |
|
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|
2586 int i, n_elif, has_else = 0; |
|
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|
2587 expr_ty expression; |
|
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|
2588 asdl_seq *suite_seq; |
|
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|
2589 asdl_seq *orelse = NULL; |
|
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|
2590 n_elif = NCH(n) - 4; |
| 35742 | 2591 /* must reference the child n_elif+1 since 'else' token is third, |
| 2592 not fourth, child from the end. */ | |
|
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|
2593 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
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|
2594 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
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|
2595 has_else = 1; |
|
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|
2596 n_elif -= 3; |
|
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|
2597 } |
|
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changeset
|
2598 n_elif /= 4; |
| 35742 | 2599 |
|
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|
2600 if (has_else) { |
|
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|
2601 asdl_seq *suite_seq2; |
| 35742 | 2602 |
|
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|
2603 orelse = asdl_seq_new(1, c->c_arena); |
|
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|
2604 if (!orelse) |
|
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|
2605 return NULL; |
| 35742 | 2606 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
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|
2607 if (!expression) |
| 35742 | 2608 return NULL; |
|
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|
2609 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
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|
2610 if (!suite_seq) |
|
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Neal Norwitz <nnorwitz@gmail.com>
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|
2611 return NULL; |
|
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|
2612 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
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|
2613 if (!suite_seq2) |
| 35742 | 2614 return NULL; |
| 2615 | |
|
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|
2616 asdl_seq_SET(orelse, 0, |
|
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|
2617 If(expression, suite_seq, suite_seq2, |
|
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|
2618 LINENO(CHILD(n, NCH(n) - 6)), |
|
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|
2619 CHILD(n, NCH(n) - 6)->n_col_offset, |
|
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|
2620 c->c_arena)); |
|
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|
2621 /* the just-created orelse handled the last elif */ |
|
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|
2622 n_elif--; |
|
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|
2623 } |
| 35742 | 2624 |
|
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|
2625 for (i = 0; i < n_elif; i++) { |
|
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diff
changeset
|
2626 int off = 5 + (n_elif - i - 1) * 4; |
|
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|
2627 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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|
2628 if (!newobj) |
|
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|
2629 return NULL; |
| 35742 | 2630 expression = ast_for_expr(c, CHILD(n, off)); |
|
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diff
changeset
|
2631 if (!expression) |
| 35742 | 2632 return NULL; |
| 2633 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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changeset
|
2634 if (!suite_seq) |
| 35742 | 2635 return NULL; |
| 2636 | |
|
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|
2637 asdl_seq_SET(newobj, 0, |
|
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|
2638 If(expression, suite_seq, orelse, |
|
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|
2639 LINENO(CHILD(n, off)), |
|
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|
2640 CHILD(n, off)->n_col_offset, c->c_arena)); |
|
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|
2641 orelse = newobj; |
|
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|
2642 } |
|
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|
2643 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
2644 if (!expression) |
|
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|
2645 return NULL; |
|
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|
2646 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
|
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|
2647 if (!suite_seq) |
|
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|
2648 return NULL; |
|
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|
2649 return If(expression, suite_seq, orelse, |
|
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|
2650 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2651 } |
|
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|
2652 |
|
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changeset
|
2653 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
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diff
changeset
|
2654 "unexpected token in 'if' statement: %s", s); |
|
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diff
changeset
|
2655 return NULL; |
| 35742 | 2656 } |
| 2657 | |
| 2658 static stmt_ty | |
| 2659 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2660 { | |
| 2661 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2662 REQ(n, while_stmt); | |
| 2663 | |
| 2664 if (NCH(n) == 4) { | |
| 2665 expr_ty expression; | |
| 2666 asdl_seq *suite_seq; | |
| 2667 | |
| 2668 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2669 if (!expression) | |
| 2670 return NULL; | |
| 2671 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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changeset
|
2672 if (!suite_seq) |
| 35742 | 2673 return NULL; |
|
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changeset
|
2674 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2675 } |
| 2676 else if (NCH(n) == 7) { | |
| 2677 expr_ty expression; | |
| 2678 asdl_seq *seq1, *seq2; | |
| 2679 | |
| 2680 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2681 if (!expression) | |
| 2682 return NULL; | |
| 2683 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2684 if (!seq1) |
| 35742 | 2685 return NULL; |
| 2686 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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|
2687 if (!seq2) |
| 35742 | 2688 return NULL; |
| 2689 | |
|
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|
2690 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2691 } |
|
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|
2692 |
|
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|
2693 PyErr_Format(PyExc_SystemError, |
|
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|
2694 "wrong number of tokens for 'while' statement: %d", |
|
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|
2695 NCH(n)); |
|
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|
2696 return NULL; |
| 35742 | 2697 } |
| 2698 | |
| 2699 static stmt_ty | |
| 2700 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2701 { | |
|
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|
2702 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2703 expr_ty expression; |
| 2704 expr_ty target; | |
|
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|
2705 const node *node_target; |
| 35742 | 2706 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2707 REQ(n, for_stmt); | |
| 2708 | |
| 2709 if (NCH(n) == 9) { | |
|
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|
2710 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2711 if (!seq) |
| 2712 return NULL; | |
| 2713 } | |
| 2714 | |
|
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|
2715 node_target = CHILD(n, 1); |
|
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|
2716 _target = ast_for_exprlist(c, node_target, Store); |
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|
2717 if (!_target) |
| 35742 | 2718 return NULL; |
|
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|
2719 /* Check the # of children rather than the length of _target, since |
|
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|
2720 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2721 if (NCH(node_target) == 1) |
|
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2722 target = (expr_ty)asdl_seq_GET(_target, 0); |
| 35742 | 2723 else |
|
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2724 target = Tuple(_target, Store, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2725 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
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|
2726 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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|
2727 if (!expression) |
| 35742 | 2728 return NULL; |
| 2729 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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|
2730 if (!suite_seq) |
| 35742 | 2731 return NULL; |
| 2732 | |
|
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|
2733 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
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|
2734 c->c_arena); |
| 35742 | 2735 } |
| 2736 | |
| 2737 static excepthandler_ty | |
| 2738 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2739 { | |
|
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|
2740 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2741 REQ(exc, except_clause); |
| 2742 REQ(body, suite); | |
| 2743 | |
| 2744 if (NCH(exc) == 1) { | |
| 2745 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2746 if (!suite_seq) | |
| 2747 return NULL; | |
| 2748 | |
|
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|
2749 return excepthandler(NULL, NULL, suite_seq, LINENO(exc), |
|
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|
2750 exc->n_col_offset, c->c_arena); |
| 35742 | 2751 } |
| 2752 else if (NCH(exc) == 2) { | |
| 2753 expr_ty expression; | |
| 2754 asdl_seq *suite_seq; | |
| 2755 | |
| 2756 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2757 if (!expression) | |
| 2758 return NULL; | |
| 2759 suite_seq = ast_for_suite(c, body); | |
|
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|
2760 if (!suite_seq) |
| 35742 | 2761 return NULL; |
| 2762 | |
|
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|
2763 return excepthandler(expression, NULL, suite_seq, LINENO(exc), |
|
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|
2764 exc->n_col_offset, c->c_arena); |
| 35742 | 2765 } |
| 2766 else if (NCH(exc) == 4) { | |
| 2767 asdl_seq *suite_seq; | |
| 2768 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
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|
2769 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
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|
2770 if (!e) |
| 35742 | 2771 return NULL; |
|
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|
2772 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
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|
2773 if (!expression) |
|
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|
2774 return NULL; |
| 35742 | 2775 suite_seq = ast_for_suite(c, body); |
|
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|
2776 if (!suite_seq) |
| 35742 | 2777 return NULL; |
| 2778 | |
|
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|
2779 return excepthandler(expression, e, suite_seq, LINENO(exc), |
|
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|
2780 exc->n_col_offset, c->c_arena); |
| 35742 | 2781 } |
|
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|
2782 |
|
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|
2783 PyErr_Format(PyExc_SystemError, |
|
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|
2784 "wrong number of children for 'except' clause: %d", |
|
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|
2785 NCH(exc)); |
|
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|
2786 return NULL; |
| 35742 | 2787 } |
| 2788 | |
| 2789 static stmt_ty | |
| 2790 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2791 { | |
|
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|
2792 const int nch = NCH(n); |
|
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|
2793 int n_except = (nch - 3)/3; |
|
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changeset
|
2794 asdl_seq *body, *orelse = NULL, *finally = NULL; |
|
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|
2795 |
| 35742 | 2796 REQ(n, try_stmt); |
| 2797 | |
|
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changeset
|
2798 body = ast_for_suite(c, CHILD(n, 2)); |
|
719ba02d2e2c
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changeset
|
2799 if (body == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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parents:
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diff
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|
2800 return NULL; |
|
719ba02d2e2c
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|
2801 |
|
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diff
changeset
|
2802 if (TYPE(CHILD(n, nch - 3)) == NAME) { |
|
719ba02d2e2c
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diff
changeset
|
2803 if (strcmp(STR(CHILD(n, nch - 3)), "finally") == 0) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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diff
changeset
|
2804 if (nch >= 9 && TYPE(CHILD(n, nch - 6)) == NAME) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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diff
changeset
|
2805 /* we can assume it's an "else", |
|
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SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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diff
changeset
|
2806 because nch >= 9 for try-else-finally and |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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parents:
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changeset
|
2807 it would otherwise have a type of except_clause */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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diff
changeset
|
2808 orelse = ast_for_suite(c, CHILD(n, nch - 4)); |
|
719ba02d2e2c
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|
2809 if (orelse == NULL) |
|
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SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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parents:
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diff
changeset
|
2810 return NULL; |
|
719ba02d2e2c
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diff
changeset
|
2811 n_except--; |
|
719ba02d2e2c
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|
2812 } |
|
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|
2813 |
|
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diff
changeset
|
2814 finally = ast_for_suite(c, CHILD(n, nch - 1)); |
|
719ba02d2e2c
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diff
changeset
|
2815 if (finally == NULL) |
|
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|
2816 return NULL; |
|
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|
2817 n_except--; |
|
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|
2818 } |
|
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|
2819 else { |
|
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|
2820 /* we can assume it's an "else", |
|
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|
2821 otherwise it would have a type of except_clause */ |
|
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|
2822 orelse = ast_for_suite(c, CHILD(n, nch - 1)); |
|
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|
2823 if (orelse == NULL) |
|
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|
2824 return NULL; |
|
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|
2825 n_except--; |
|
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|
2826 } |
| 35742 | 2827 } |
|
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|
2828 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
|
2829 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2830 return NULL; |
| 2831 } | |
|
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|
2832 |
|
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|
2833 if (n_except > 0) { |
|
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|
2834 int i; |
|
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|
2835 stmt_ty except_st; |
|
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|
2836 /* process except statements to create a try ... except */ |
|
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|
2837 asdl_seq *handlers = asdl_seq_new(n_except, c->c_arena); |
|
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changeset
|
2838 if (handlers == NULL) |
|
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changeset
|
2839 return NULL; |
|
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changeset
|
2840 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2841 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
|
2842 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
|
2843 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
|
2844 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2845 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2846 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
|
2847 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2848 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2849 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
|
2850 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
|
2851 if (!finally) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2852 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
|
2853 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2854 /* 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
|
2855 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
|
2856 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
|
2857 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2858 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2859 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
|
2860 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2861 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2862 /* 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
|
2863 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
|
2864 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2865 } |
| 2866 | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2867 static expr_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2868 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
|
2869 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2870 REQ(n, with_var); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2871 return ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2872 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2873 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2874 /* with_stmt: 'with' test [ with_var ] ':' suite */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2875 static stmt_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2876 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
|
2877 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2878 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2879 int suite_index = 3; /* skip 'with', test, and ':' */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2880 asdl_seq *suite_seq; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2881 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2882 assert(TYPE(n) == with_stmt); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2883 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
|
2884 if (TYPE(CHILD(n, 2)) == with_var) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2885 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
|
2886 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2887 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2888 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2889 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2890 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
|
2891 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2892 } |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2893 suite_index = 4; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2894 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2895 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2896 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
|
2897 if (!suite_seq) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2898 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2899 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2900 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
|
2901 n->n_col_offset, c->c_arena); |
|
36695
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 |
| 35742 | 2904 static stmt_ty |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2905 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 2906 { |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2907 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2908 asdl_seq *s; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2909 expr_ty call, dummy; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2910 |
| 35742 | 2911 REQ(n, classdef); |
| 2912 | |
| 2913 if (!strcmp(STR(CHILD(n, 1)), "None")) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2914 ast_error(n, "assignment to None"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2915 return NULL; |
| 35742 | 2916 } |
| 2917 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2918 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 2919 s = ast_for_suite(c, CHILD(n, 3)); |
| 2920 if (!s) | |
| 2921 return NULL; | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2922 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2923 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2924 } |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2925 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2926 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2927 s = ast_for_suite(c, CHILD(n,5)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2928 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2929 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2930 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2931 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2932 } |
| 2933 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2934 /* class NAME '(' arglist ')' ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2935 /* build up a fake Call node so we can extract its pieces */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2936 dummy = Name(NEW_IDENTIFIER(CHILD(n, 1)), Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2937 call = ast_for_call(c, CHILD(n, 3), dummy); |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2938 if (!call) |
| 35742 | 2939 return NULL; |
| 2940 s = ast_for_suite(c, CHILD(n, 6)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2941 if (!s) |
| 35742 | 2942 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2943 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2944 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2945 call->v.Call.args, call->v.Call.keywords, |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2946 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2947 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2948 } |
| 2949 | |
| 2950 static stmt_ty | |
| 2951 ast_for_stmt(struct compiling *c, const node *n) | |
| 2952 { | |
| 2953 if (TYPE(n) == stmt) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2954 assert(NCH(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2955 n = CHILD(n, 0); |
| 35742 | 2956 } |
| 2957 if (TYPE(n) == simple_stmt) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2958 assert(num_stmts(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2959 n = CHILD(n, 0); |
| 35742 | 2960 } |
| 2961 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
2962 REQ(n, small_stmt); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
2963 n = CHILD(n, 0); |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2964 /* small_stmt: expr_stmt | del_stmt | pass_stmt | flow_stmt |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2965 | import_stmt | global_stmt | nonlocal_stmt | assert_stmt |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2966 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2967 switch (TYPE(n)) { |
| 35742 | 2968 case expr_stmt: |
| 2969 return ast_for_expr_stmt(c, n); | |
| 2970 case del_stmt: | |
| 2971 return ast_for_del_stmt(c, n); | |
| 2972 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
|
2973 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2974 case flow_stmt: |
| 2975 return ast_for_flow_stmt(c, n); | |
| 2976 case import_stmt: | |
| 2977 return ast_for_import_stmt(c, n); | |
| 2978 case global_stmt: | |
| 2979 return ast_for_global_stmt(c, n); | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
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|
2980 case nonlocal_stmt: |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
2981 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 2982 case assert_stmt: |
| 2983 return ast_for_assert_stmt(c, n); | |
| 2984 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2985 PyErr_Format(PyExc_SystemError, |
| 35742 | 2986 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 2987 TYPE(n), NCH(n)); | |
| 2988 return NULL; | |
| 2989 } | |
| 2990 } | |
| 2991 else { | |
| 2992 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
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|
2993 | funcdef | classdef | decorated |
|
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|
2994 */ |
|
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|
2995 node *ch = CHILD(n, 0); |
|
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|
2996 REQ(n, compound_stmt); |
|
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|
2997 switch (TYPE(ch)) { |
| 35742 | 2998 case if_stmt: |
| 2999 return ast_for_if_stmt(c, ch); | |
| 3000 case while_stmt: | |
| 3001 return ast_for_while_stmt(c, ch); | |
| 3002 case for_stmt: | |
| 3003 return ast_for_for_stmt(c, ch); | |
| 3004 case try_stmt: | |
| 3005 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
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36686
diff
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|
3006 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
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|
3007 return ast_for_with_stmt(c, ch); |
| 35742 | 3008 case funcdef: |
|
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|
3009 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3010 case classdef: |
|
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|
3011 return ast_for_classdef(c, ch, NULL); |
|
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|
3012 case decorated: |
|
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|
3013 return ast_for_decorated(c, ch); |
| 35742 | 3014 default: |
|
35870
f531c05cd240
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
3015 PyErr_Format(PyExc_SystemError, |
| 35742 | 3016 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3017 TYPE(n), NCH(n)); | |
| 3018 return NULL; | |
|
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|
3019 } |
| 35742 | 3020 } |
| 3021 } | |
| 3022 | |
| 3023 static PyObject * | |
| 3024 parsenumber(const char *s) | |
| 3025 { | |
|
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|
3026 const char *end; |
|
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|
3027 long x; |
|
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|
3028 double dx; |
| 35742 | 3029 #ifndef WITHOUT_COMPLEX |
|
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|
3030 Py_complex c; |
|
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|
3031 int imflag; |
| 35742 | 3032 #endif |
| 3033 | |
|
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|
3034 errno = 0; |
|
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|
3035 end = s + strlen(s) - 1; |
| 35742 | 3036 #ifndef WITHOUT_COMPLEX |
|
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|
3037 imflag = *end == 'j' || *end == 'J'; |
| 35742 | 3038 #endif |
|
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|
3039 if (*end == 'l' || *end == 'L') |
|
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|
3040 return PyLong_FromString((char *)s, (char **)0, 0); |
|
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|
3041 if (s[0] == '0') { |
|
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|
3042 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
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|
3043 if (x < 0 && errno == 0) { |
|
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|
3044 return PyLong_FromString((char *)s, |
|
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|
3045 (char **)0, |
|
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|
3046 0); |
|
40450
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|
3047 } |
|
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|
3048 } |
|
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3049 else |
|
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3050 x = PyOS_strtol((char *)s, (char **)&end, 0); |
|
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|
3051 if (*end == '\0') { |
|
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|
3052 if (errno != 0) |
|
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3053 return PyLong_FromString((char *)s, (char **)0, 0); |
|
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|
3054 return PyInt_FromLong(x); |
|
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|
3055 } |
|
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|
3056 /* XXX Huge floats may silently fail */ |
| 35742 | 3057 #ifndef WITHOUT_COMPLEX |
|
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|
3058 if (imflag) { |
|
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|
3059 c.real = 0.; |
|
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|
3060 PyFPE_START_PROTECT("atof", return 0) |
|
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|
3061 c.imag = PyOS_ascii_atof(s); |
|
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|
3062 PyFPE_END_PROTECT(c) |
|
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|
3063 return PyComplex_FromCComplex(c); |
|
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|
3064 } |
|
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|
3065 else |
| 35742 | 3066 #endif |
|
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|
3067 { |
|
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|
3068 PyFPE_START_PROTECT("atof", return 0) |
|
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|
3069 dx = PyOS_ascii_atof(s); |
|
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|
3070 PyFPE_END_PROTECT(dx) |
|
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|
3071 return PyFloat_FromDouble(dx); |
|
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|
3072 } |
| 35742 | 3073 } |
| 3074 | |
| 3075 static PyObject * | |
| 3076 decode_utf8(const char **sPtr, const char *end, char* encoding) | |
| 3077 { | |
|
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|
3078 PyObject *u, *v; |
|
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|
3079 char *s, *t; |
|
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|
3080 t = s = (char *)*sPtr; |
|
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|
3081 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
|
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|
3082 while (s < end && (*s & 0x80)) s++; |
|
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|
3083 *sPtr = s; |
|
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|
3084 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
|
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|
3085 if (u == NULL) |
|
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|
3086 return NULL; |
|
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|
3087 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
|
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|
3088 Py_DECREF(u); |
|
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|
3089 return v; |
| 35742 | 3090 } |
| 3091 | |
| 3092 static PyObject * | |
| 3093 decode_unicode(const char *s, size_t len, int rawmode, const char *encoding) | |
| 3094 { | |
|
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|
3095 PyObject *v, *u; |
|
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|
3096 char *buf; |
|
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|
3097 char *p; |
|
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|
3098 const char *end; |
|
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|
3099 if (encoding == NULL) { |
|
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|
3100 buf = (char *)s; |
|
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|
3101 u = NULL; |
|
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3102 } else if (strcmp(encoding, "iso-8859-1") == 0) { |
|
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|
3103 buf = (char *)s; |
|
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|
3104 u = NULL; |
|
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|
3105 } else { |
|
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|
3106 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ |
|
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|
3107 u = PyString_FromStringAndSize((char *)NULL, len * 4); |
|
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|
3108 if (u == NULL) |
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|
3109 return NULL; |
|
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|
3110 p = buf = PyString_AsString(u); |
|
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|
3111 end = s + len; |
|
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|
3112 while (s < end) { |
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|
3113 if (*s == '\\') { |
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|
3114 *p++ = *s++; |
|
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|
3115 if (*s & 0x80) { |
|
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|
3116 strcpy(p, "u005c"); |
|
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|
3117 p += 5; |
|
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|
3118 } |
|
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|
3119 } |
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|
3120 if (*s & 0x80) { /* XXX inefficient */ |
|
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|
3121 PyObject *w; |
|
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|
3122 char *r; |
|
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|
3123 Py_ssize_t rn, i; |
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3124 w = decode_utf8(&s, end, "utf-16-be"); |
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3125 if (w == NULL) { |
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3126 Py_DECREF(u); |
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3127 return NULL; |
|
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3128 } |
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3129 assert(PyBytes_Check(w)); |
|
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3130 r = PyBytes_AsString(w); |
|
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3131 rn = PyBytes_Size(w); |
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3132 assert(rn % 2 == 0); |
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3133 for (i = 0; i < rn; i += 2) { |
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3134 sprintf(p, "\\u%02x%02x", |
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3135 r[i + 0] & 0xFF, |
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3136 r[i + 1] & 0xFF); |
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3137 p += 6; |
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3138 } |
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3139 Py_DECREF(w); |
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3140 } else { |
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3141 *p++ = *s++; |
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3142 } |
|
40450
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Four months of trunk changes (including a few releases...)
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3143 } |
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3144 len = p - buf; |
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3145 s = buf; |
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3146 } |
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3147 if (rawmode) |
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3148 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
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3149 else |
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3150 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
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3151 Py_XDECREF(u); |
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3152 return v; |
| 35742 | 3153 } |
| 3154 | |
| 3155 /* s is a Python string literal, including the bracketing quote characters, | |
| 3156 * and r &/or u prefixes (if any), and embedded escape sequences (if any). | |
| 3157 * parsestr parses it, and returns the decoded Python string object. | |
| 3158 */ | |
| 3159 static PyObject * | |
| 40894 | 3160 parsestr(const node *n, const char *encoding, int *bytesmode) |
| 35742 | 3161 { |
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3162 size_t len; |
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3163 const char *s = STR(n); |
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3164 int quote = Py_CHARMASK(*s); |
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3165 int rawmode = 0; |
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3166 int need_encoding; |
| 35742 | 3167 |
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3168 if (isalpha(quote) || quote == '_') { |
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3169 if (quote == 'b' || quote == 'B') { |
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3170 quote = *++s; |
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3171 *bytesmode = 1; |
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3172 } |
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3173 if (quote == 'r' || quote == 'R') { |
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3174 quote = *++s; |
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3175 rawmode = 1; |
|
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3176 } |
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3177 } |
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3178 if (quote != '\'' && quote != '\"') { |
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3179 PyErr_BadInternalCall(); |
|
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3180 return NULL; |
|
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3181 } |
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3182 s++; |
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3183 len = strlen(s); |
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3184 if (len > INT_MAX) { |
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3185 PyErr_SetString(PyExc_OverflowError, |
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3186 "string to parse is too long"); |
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3187 return NULL; |
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3188 } |
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3189 if (s[--len] != quote) { |
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3190 PyErr_BadInternalCall(); |
|
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|
3191 return NULL; |
|
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|
3192 } |
|
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3193 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
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3194 s += 2; |
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3195 len -= 2; |
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3196 if (s[--len] != quote || s[--len] != quote) { |
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3197 PyErr_BadInternalCall(); |
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|
3198 return NULL; |
| 40894 | 3199 } |
|
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|
3200 } |
|
41558
29ae667f3239
Checkpoint. Manipulated things so that string literals are always
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|
3201 if (!*bytesmode) { |
|
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3202 return decode_unicode(s, len, rawmode, encoding); |
|
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3203 } |
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3204 if (*bytesmode) { |
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|
3205 /* Disallow non-ascii characters (but not escapes) */ |
|
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|
3206 const char *c; |
|
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3207 for (c = s; *c; c++) { |
|
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3208 if (Py_CHARMASK(*c) >= 0x80) { |
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|
3209 ast_error(n, "bytes can only contain ASCII " |
|
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|
3210 "literal characters."); |
|
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3211 return NULL; |
|
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3212 } |
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3213 } |
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3214 } |
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3215 need_encoding = (!*bytesmode && encoding != NULL && |
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3216 strcmp(encoding, "utf-8") != 0 && |
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3217 strcmp(encoding, "iso-8859-1") != 0); |
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3218 if (rawmode || strchr(s, '\\') == NULL) { |
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3219 if (need_encoding) { |
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3220 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
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3221 if (u == NULL) |
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3222 return NULL; |
|
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|
3223 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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3224 Py_DECREF(u); |
|
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3225 return v; |
|
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3226 } else { |
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3227 return PyString_FromStringAndSize(s, len); |
|
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3228 } |
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3229 } |
| 35742 | 3230 |
|
41698
7d49038e99c9
Remove support for u"..." literals.
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3231 return PyString_DecodeEscape(s, len, NULL, 1, |
|
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3232 need_encoding ? encoding : NULL); |
| 35742 | 3233 } |
| 3234 | |
| 3235 /* Build a Python string object out of a STRING atom. This takes care of | |
| 3236 * compile-time literal catenation, calling parsestr() on each piece, and | |
| 3237 * pasting the intermediate results together. | |
| 3238 */ | |
| 3239 static PyObject * | |
| 40894 | 3240 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3241 { |
|
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3242 PyObject *v; |
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3243 int i; |
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3244 REQ(CHILD(n, 0), STRING); |
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3245 v = parsestr(CHILD(n, 0), c->c_encoding, bytesmode); |
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3246 if (v != NULL) { |
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3247 /* String literal concatenation */ |
|
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3248 for (i = 1; i < NCH(n); i++) { |
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3249 PyObject *s; |
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|
3250 int subbm = 0; |
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3251 s = parsestr(CHILD(n, i), c->c_encoding, &subbm); |
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3252 if (s == NULL) |
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3253 goto onError; |
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3254 if (*bytesmode != subbm) { |
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3255 ast_error(n, "cannot mix bytes and nonbytes" |
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3256 "literals"); |
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3257 goto onError; |
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3258 } |
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3259 if (PyString_Check(v) && PyString_Check(s)) { |
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3260 PyString_ConcatAndDel(&v, s); |
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3261 if (v == NULL) |
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3262 goto onError; |
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3263 } |
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3264 else { |
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3265 PyObject *temp = PyUnicode_Concat(v, s); |
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3266 Py_DECREF(s); |
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3267 Py_DECREF(v); |
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3268 v = temp; |
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3269 if (v == NULL) |
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3270 goto onError; |
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3271 } |
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40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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3272 } |
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41554
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3273 } |
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3274 return v; |
| 35742 | 3275 |
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3276 onError: |
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3277 Py_XDECREF(v); |
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3278 return NULL; |
| 35742 | 3279 } |