Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 56237:7ee140b7ef93
fix an ambiguity in the grammar from the implementation of extended unpacking
(one which was strangely "resolved" by pgen)
This also kills the unused testlist1 rule and fixes parse tree validation of
extended unpacking.
| author | Benjamin Peterson <benjamin@python.org> |
|---|---|
| date | Sun, 27 Sep 2009 02:43:28 +0000 |
| parents | d4e3af343e32 |
| children | 0453d18c63a4 |
| rev | line source |
|---|---|
| 35742 | 1 /* |
| 2 * This file includes functions to transform a concrete syntax tree (CST) to | |
| 3 * an abstract syntax tree (AST). The main function is PyAST_FromNode(). | |
| 4 * | |
| 5 */ | |
| 6 #include "Python.h" | |
| 7 #include "Python-ast.h" | |
| 8 #include "grammar.h" | |
| 9 #include "node.h" | |
|
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10 #include "pyarena.h" |
| 35742 | 11 #include "ast.h" |
| 12 #include "token.h" | |
| 13 #include "parsetok.h" | |
| 14 #include "graminit.h" | |
| 15 | |
| 16 #include <assert.h> | |
| 17 | |
| 18 /* Data structure used internally */ | |
| 19 struct compiling { | |
|
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20 char *c_encoding; /* source encoding */ |
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21 PyArena *c_arena; /* arena for allocating memeory */ |
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22 const char *c_filename; /* filename */ |
| 35742 | 23 }; |
| 24 | |
| 25 static asdl_seq *seq_for_testlist(struct compiling *, const node *); | |
| 26 static expr_ty ast_for_expr(struct compiling *, const node *); | |
| 27 static stmt_ty ast_for_stmt(struct compiling *, const node *); | |
| 28 static asdl_seq *ast_for_suite(struct compiling *, const node *); | |
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29 static asdl_seq *ast_for_exprlist(struct compiling *, const node *, |
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30 expr_context_ty); |
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31 static expr_ty ast_for_testlist(struct compiling *, const node *); |
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32 static stmt_ty ast_for_classdef(struct compiling *, const node *, asdl_seq *); |
| 35742 | 33 |
| 34 /* Note different signature for ast_for_call */ | |
| 35 static expr_ty ast_for_call(struct compiling *, const node *, expr_ty); | |
| 36 | |
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37 static PyObject *parsenumber(struct compiling *, const char *); |
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38 static PyObject *parsestr(struct compiling *, const node *n, int *bytesmode); |
| 40894 | 39 static PyObject *parsestrplus(struct compiling *, const node *n, |
| 40 int *bytesmode); | |
| 35742 | 41 |
| 42 #ifndef LINENO | |
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43 #define LINENO(n) ((n)->n_lineno) |
| 35742 | 44 #endif |
| 45 | |
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46 #define COMP_GENEXP 0 |
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47 #define COMP_LISTCOMP 1 |
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48 #define COMP_SETCOMP 2 |
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49 |
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50 static identifier |
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51 new_identifier(const char* n, PyArena *arena) |
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52 { |
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53 PyObject* id = PyUnicode_DecodeUTF8(n, strlen(n), NULL); |
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54 Py_UNICODE *u; |
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55 if (!id) |
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56 return NULL; |
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57 u = PyUnicode_AS_UNICODE(id); |
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58 /* Check whether there are non-ASCII characters in the |
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59 identifier; if so, normalize to NFKC. */ |
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60 for (; *u; u++) { |
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61 if (*u >= 128) { |
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62 PyObject *m = PyImport_ImportModuleNoBlock("unicodedata"); |
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63 PyObject *id2; |
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64 if (!m) |
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65 return NULL; |
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66 id2 = PyObject_CallMethod(m, "normalize", "sO", "NFKC", id); |
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67 Py_DECREF(m); |
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68 if (!id2) |
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69 return NULL; |
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70 Py_DECREF(id); |
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71 id = id2; |
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72 break; |
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73 } |
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74 } |
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75 PyUnicode_InternInPlace(&id); |
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76 PyArena_AddPyObject(arena, id); |
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77 return id; |
| 35742 | 78 } |
| 79 | |
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80 #define NEW_IDENTIFIER(n) new_identifier(STR(n), c->c_arena) |
| 35742 | 81 |
| 82 /* This routine provides an invalid object for the syntax error. | |
| 83 The outermost routine must unpack this error and create the | |
| 84 proper object. We do this so that we don't have to pass | |
| 85 the filename to everything function. | |
| 86 | |
| 87 XXX Maybe we should just pass the filename... | |
| 88 */ | |
| 89 | |
| 90 static int | |
| 91 ast_error(const node *n, const char *errstr) | |
| 92 { | |
| 93 PyObject *u = Py_BuildValue("zi", errstr, LINENO(n)); | |
| 94 if (!u) | |
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95 return 0; |
| 35742 | 96 PyErr_SetObject(PyExc_SyntaxError, u); |
| 97 Py_DECREF(u); | |
| 98 return 0; | |
| 99 } | |
| 100 | |
| 101 static void | |
| 102 ast_error_finish(const char *filename) | |
| 103 { | |
| 104 PyObject *type, *value, *tback, *errstr, *loc, *tmp; | |
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105 long lineno; |
| 35742 | 106 |
| 107 assert(PyErr_Occurred()); | |
| 108 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
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109 return; |
| 35742 | 110 |
| 111 PyErr_Fetch(&type, &value, &tback); | |
| 112 errstr = PyTuple_GetItem(value, 0); | |
| 113 if (!errstr) | |
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114 return; |
| 35742 | 115 Py_INCREF(errstr); |
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116 lineno = PyLong_AsLong(PyTuple_GetItem(value, 1)); |
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117 if (lineno == -1) { |
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118 Py_DECREF(errstr); |
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119 return; |
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120 } |
| 35742 | 121 Py_DECREF(value); |
| 122 | |
| 123 loc = PyErr_ProgramText(filename, lineno); | |
| 124 if (!loc) { | |
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125 Py_INCREF(Py_None); |
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126 loc = Py_None; |
| 35742 | 127 } |
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128 tmp = Py_BuildValue("(zlOO)", filename, lineno, Py_None, loc); |
| 35742 | 129 Py_DECREF(loc); |
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130 if (!tmp) { |
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131 Py_DECREF(errstr); |
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132 return; |
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133 } |
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134 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 135 Py_DECREF(errstr); |
| 136 Py_DECREF(tmp); | |
| 137 if (!value) | |
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138 return; |
| 35742 | 139 PyErr_Restore(type, value, tback); |
| 140 } | |
| 141 | |
| 142 /* num_stmts() returns number of contained statements. | |
| 143 | |
| 144 Use this routine to determine how big a sequence is needed for | |
| 145 the statements in a parse tree. Its raison d'etre is this bit of | |
| 146 grammar: | |
| 147 | |
| 148 stmt: simple_stmt | compound_stmt | |
| 149 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 150 | |
| 151 A simple_stmt can contain multiple small_stmt elements joined | |
| 152 by semicolons. If the arg is a simple_stmt, the number of | |
| 153 small_stmt elements is returned. | |
| 154 */ | |
| 155 | |
| 156 static int | |
| 157 num_stmts(const node *n) | |
| 158 { | |
| 159 int i, l; | |
| 160 node *ch; | |
| 161 | |
| 162 switch (TYPE(n)) { | |
| 163 case single_input: | |
| 164 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 165 return 0; | |
| 166 else | |
| 167 return num_stmts(CHILD(n, 0)); | |
| 168 case file_input: | |
| 169 l = 0; | |
| 170 for (i = 0; i < NCH(n); i++) { | |
| 171 ch = CHILD(n, i); | |
| 172 if (TYPE(ch) == stmt) | |
| 173 l += num_stmts(ch); | |
| 174 } | |
| 175 return l; | |
| 176 case stmt: | |
| 177 return num_stmts(CHILD(n, 0)); | |
| 178 case compound_stmt: | |
| 179 return 1; | |
| 180 case simple_stmt: | |
| 181 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 182 case suite: | |
| 183 if (NCH(n) == 1) | |
| 184 return num_stmts(CHILD(n, 0)); | |
| 185 else { | |
| 186 l = 0; | |
| 187 for (i = 2; i < (NCH(n) - 1); i++) | |
| 188 l += num_stmts(CHILD(n, i)); | |
| 189 return l; | |
| 190 } | |
| 191 default: { | |
| 192 char buf[128]; | |
| 193 | |
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194 sprintf(buf, "Non-statement found: %d %d", |
| 35742 | 195 TYPE(n), NCH(n)); |
| 196 Py_FatalError(buf); | |
| 197 } | |
| 198 } | |
| 199 assert(0); | |
| 200 return 0; | |
| 201 } | |
| 202 | |
| 203 /* Transform the CST rooted at node * to the appropriate AST | |
| 204 */ | |
| 205 | |
| 206 mod_ty | |
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207 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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208 PyArena *arena) |
| 35742 | 209 { |
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210 int i, j, k, num; |
| 35742 | 211 asdl_seq *stmts = NULL; |
| 212 stmt_ty s; | |
| 213 node *ch; | |
| 214 struct compiling c; | |
| 215 | |
| 216 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
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217 c.c_encoding = "utf-8"; |
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218 if (TYPE(n) == encoding_decl) { |
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219 #if 0 |
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220 ast_error(n, "encoding declaration in Unicode string"); |
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221 goto error; |
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222 #endif |
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223 n = CHILD(n, 0); |
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224 } |
| 35742 | 225 } else if (TYPE(n) == encoding_decl) { |
| 226 c.c_encoding = STR(n); | |
| 227 n = CHILD(n, 0); | |
| 228 } else { | |
| 42403 | 229 /* PEP 3120 */ |
| 230 c.c_encoding = "utf-8"; | |
| 35742 | 231 } |
|
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232 c.c_arena = arena; |
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233 c.c_filename = filename; |
| 35742 | 234 |
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235 k = 0; |
| 35742 | 236 switch (TYPE(n)) { |
| 237 case file_input: | |
|
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238 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 239 if (!stmts) |
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240 return NULL; |
| 35742 | 241 for (i = 0; i < NCH(n) - 1; i++) { |
| 242 ch = CHILD(n, i); | |
| 243 if (TYPE(ch) == NEWLINE) | |
| 244 continue; | |
| 245 REQ(ch, stmt); | |
| 246 num = num_stmts(ch); | |
| 247 if (num == 1) { | |
| 248 s = ast_for_stmt(&c, ch); | |
| 249 if (!s) | |
| 250 goto error; | |
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251 asdl_seq_SET(stmts, k++, s); |
| 35742 | 252 } |
| 253 else { | |
| 254 ch = CHILD(ch, 0); | |
| 255 REQ(ch, simple_stmt); | |
| 256 for (j = 0; j < num; j++) { | |
| 257 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 258 if (!s) | |
| 259 goto error; | |
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260 asdl_seq_SET(stmts, k++, s); |
| 35742 | 261 } |
| 262 } | |
| 263 } | |
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264 return Module(stmts, arena); |
| 35742 | 265 case eval_input: { |
| 266 expr_ty testlist_ast; | |
| 267 | |
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268 /* XXX Why not comp_for here? */ |
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269 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 270 if (!testlist_ast) |
| 271 goto error; | |
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272 return Expression(testlist_ast, arena); |
| 35742 | 273 } |
| 274 case single_input: | |
| 275 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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276 stmts = asdl_seq_new(1, arena); |
| 35742 | 277 if (!stmts) |
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278 goto error; |
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279 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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280 arena)); |
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281 if (!asdl_seq_GET(stmts, 0)) |
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282 goto error; |
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283 return Interactive(stmts, arena); |
| 35742 | 284 } |
| 285 else { | |
| 286 n = CHILD(n, 0); | |
| 287 num = num_stmts(n); | |
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288 stmts = asdl_seq_new(num, arena); |
| 35742 | 289 if (!stmts) |
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290 goto error; |
| 35742 | 291 if (num == 1) { |
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292 s = ast_for_stmt(&c, n); |
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293 if (!s) |
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294 goto error; |
| 35742 | 295 asdl_seq_SET(stmts, 0, s); |
| 296 } | |
| 297 else { | |
| 298 /* Only a simple_stmt can contain multiple statements. */ | |
| 299 REQ(n, simple_stmt); | |
| 300 for (i = 0; i < NCH(n); i += 2) { | |
| 301 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 302 break; | |
| 303 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 304 if (!s) | |
| 305 goto error; | |
| 306 asdl_seq_SET(stmts, i / 2, s); | |
| 307 } | |
| 308 } | |
| 309 | |
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310 return Interactive(stmts, arena); |
| 35742 | 311 } |
| 312 default: | |
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313 PyErr_Format(PyExc_SystemError, |
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314 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 315 goto error; |
| 316 } | |
| 317 error: | |
| 318 ast_error_finish(filename); | |
| 319 return NULL; | |
| 320 } | |
| 321 | |
| 322 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 323 */ | |
| 324 | |
| 325 static operator_ty | |
| 326 get_operator(const node *n) | |
| 327 { | |
| 328 switch (TYPE(n)) { | |
| 329 case VBAR: | |
| 330 return BitOr; | |
| 331 case CIRCUMFLEX: | |
| 332 return BitXor; | |
| 333 case AMPER: | |
| 334 return BitAnd; | |
| 335 case LEFTSHIFT: | |
| 336 return LShift; | |
| 337 case RIGHTSHIFT: | |
| 338 return RShift; | |
| 339 case PLUS: | |
| 340 return Add; | |
| 341 case MINUS: | |
| 342 return Sub; | |
| 343 case STAR: | |
| 344 return Mult; | |
| 345 case SLASH: | |
| 346 return Div; | |
| 347 case DOUBLESLASH: | |
| 348 return FloorDiv; | |
| 349 case PERCENT: | |
| 350 return Mod; | |
| 351 default: | |
|
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352 return (operator_ty)0; |
| 35742 | 353 } |
| 354 } | |
| 355 | |
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356 static const char* FORBIDDEN[] = { |
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357 "None", |
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358 "True", |
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359 "False", |
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360 NULL, |
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361 }; |
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362 |
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363 static int |
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364 forbidden_name(identifier name, const node *n, int full_checks) |
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365 { |
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366 assert(PyUnicode_Check(name)); |
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367 if (PyUnicode_CompareWithASCIIString(name, "__debug__") == 0) { |
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368 ast_error(n, "assignment to keyword"); |
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369 return 1; |
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370 } |
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371 if (full_checks) { |
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372 const char **p; |
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373 for (p = FORBIDDEN; *p; p++) { |
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374 if (PyUnicode_CompareWithASCIIString(name, *p) == 0) { |
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375 ast_error(n, "assignment to keyword"); |
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376 return 1; |
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377 } |
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378 } |
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379 } |
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380 return 0; |
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381 } |
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382 |
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383 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 384 |
| 385 Only sets context for expr kinds that "can appear in assignment context" | |
| 386 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 387 an appropriate syntax error and returns false. | |
| 388 */ | |
| 389 | |
| 390 static int | |
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391 set_context(struct compiling *c, expr_ty e, expr_context_ty ctx, const node *n) |
| 35742 | 392 { |
| 393 asdl_seq *s = NULL; | |
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394 /* If a particular expression type can't be used for assign / delete, |
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395 set expr_name to its name and an error message will be generated. |
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396 */ |
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397 const char* expr_name = NULL; |
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398 |
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399 /* The ast defines augmented store and load contexts, but the |
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400 implementation here doesn't actually use them. The code may be |
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401 a little more complex than necessary as a result. It also means |
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402 that expressions in an augmented assignment have a Store context. |
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403 Consider restructuring so that augmented assignment uses |
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404 set_context(), too. |
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405 */ |
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406 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 407 |
| 408 switch (e->kind) { | |
| 409 case Attribute_kind: | |
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410 e->v.Attribute.ctx = ctx; |
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411 if (ctx == Store && forbidden_name(e->v.Attribute.attr, n, 1)) |
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412 return 0; |
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413 break; |
| 35742 | 414 case Subscript_kind: |
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415 e->v.Subscript.ctx = ctx; |
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416 break; |
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417 case Starred_kind: |
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418 e->v.Starred.ctx = ctx; |
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419 if (!set_context(c, e->v.Starred.value, ctx, n)) |
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420 return 0; |
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421 break; |
| 35742 | 422 case Name_kind: |
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423 if (ctx == Store) { |
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424 if (forbidden_name(e->v.Name.id, n, 1)) |
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425 return 0; /* forbidden_name() calls ast_error() */ |
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426 } |
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427 e->v.Name.ctx = ctx; |
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430 e->v.List.ctx = ctx; |
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431 s = e->v.List.elts; |
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432 break; |
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434 if (asdl_seq_LEN(e->v.Tuple.elts)) { |
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435 e->v.Tuple.ctx = ctx; |
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436 s = e->v.Tuple.elts; |
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437 } |
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438 else { |
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439 expr_name = "()"; |
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440 } |
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442 case Lambda_kind: |
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443 expr_name = "lambda"; |
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444 break; |
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446 expr_name = "function call"; |
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448 case BoolOp_kind: |
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450 case UnaryOp_kind: |
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451 expr_name = "operator"; |
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452 break; |
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454 expr_name = "generator expression"; |
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455 break; |
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456 case Yield_kind: |
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457 expr_name = "yield expression"; |
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458 break; |
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459 case ListComp_kind: |
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460 expr_name = "list comprehension"; |
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461 break; |
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462 case SetComp_kind: |
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463 expr_name = "set comprehension"; |
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464 break; |
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465 case DictComp_kind: |
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466 expr_name = "dict comprehension"; |
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468 case Dict_kind: |
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469 case Set_kind: |
| 35742 | 470 case Num_kind: |
| 471 case Str_kind: | |
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472 expr_name = "literal"; |
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473 break; |
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474 case Ellipsis_kind: |
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475 expr_name = "Ellipsis"; |
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476 break; |
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477 case Compare_kind: |
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478 expr_name = "comparison"; |
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479 break; |
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480 case IfExp_kind: |
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481 expr_name = "conditional expression"; |
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482 break; |
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483 default: |
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484 PyErr_Format(PyExc_SystemError, |
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485 "unexpected expression in assignment %d (line %d)", |
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486 e->kind, e->lineno); |
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487 return 0; |
| 35742 | 488 } |
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489 /* Check for error string set by switch */ |
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490 if (expr_name) { |
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491 char buf[300]; |
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492 PyOS_snprintf(buf, sizeof(buf), |
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493 "can't %s %s", |
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494 ctx == Store ? "assign to" : "delete", |
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495 expr_name); |
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496 return ast_error(n, buf); |
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497 } |
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498 |
| 35742 | 499 /* If the LHS is a list or tuple, we need to set the assignment |
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500 context for all the contained elements. |
| 35742 | 501 */ |
| 502 if (s) { | |
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503 int i; |
| 35742 | 504 |
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505 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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506 if (!set_context(c, (expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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507 return 0; |
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508 } |
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| 510 return 1; | |
| 511 } | |
| 512 | |
| 513 static operator_ty | |
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514 ast_for_augassign(struct compiling *c, const node *n) |
| 35742 | 515 { |
| 516 REQ(n, augassign); | |
| 517 n = CHILD(n, 0); | |
| 518 switch (STR(n)[0]) { | |
| 519 case '+': | |
| 520 return Add; | |
| 521 case '-': | |
| 522 return Sub; | |
| 523 case '/': | |
| 524 if (STR(n)[1] == '/') | |
| 525 return FloorDiv; | |
| 526 else | |
| 527 return Div; | |
| 528 case '%': | |
| 529 return Mod; | |
| 530 case '<': | |
| 531 return LShift; | |
| 532 case '>': | |
| 533 return RShift; | |
| 534 case '&': | |
| 535 return BitAnd; | |
| 536 case '^': | |
| 537 return BitXor; | |
| 538 case '|': | |
| 539 return BitOr; | |
| 540 case '*': | |
| 541 if (STR(n)[1] == '*') | |
| 542 return Pow; | |
| 543 else | |
| 544 return Mult; | |
| 545 default: | |
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546 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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547 return (operator_ty)0; |
| 35742 | 548 } |
| 549 } | |
| 550 | |
| 551 static cmpop_ty | |
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552 ast_for_comp_op(struct compiling *c, const node *n) |
| 35742 | 553 { |
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554 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 555 |'is' 'not' |
| 556 */ | |
| 557 REQ(n, comp_op); | |
| 558 if (NCH(n) == 1) { | |
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559 n = CHILD(n, 0); |
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560 switch (TYPE(n)) { |
| 35742 | 561 case LESS: |
| 562 return Lt; | |
| 563 case GREATER: | |
| 564 return Gt; | |
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565 case EQEQUAL: /* == */ |
| 35742 | 566 return Eq; |
| 567 case LESSEQUAL: | |
| 568 return LtE; | |
| 569 case GREATEREQUAL: | |
| 570 return GtE; | |
| 571 case NOTEQUAL: | |
| 572 return NotEq; | |
| 573 case NAME: | |
| 574 if (strcmp(STR(n), "in") == 0) | |
| 575 return In; | |
| 576 if (strcmp(STR(n), "is") == 0) | |
| 577 return Is; | |
| 578 default: | |
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579 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 580 STR(n)); |
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581 return (cmpop_ty)0; |
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582 } |
| 35742 | 583 } |
| 584 else if (NCH(n) == 2) { | |
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585 /* handle "not in" and "is not" */ |
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586 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 587 case NAME: |
| 588 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 589 return NotIn; | |
| 590 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 591 return IsNot; | |
| 592 default: | |
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593 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 594 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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595 return (cmpop_ty)0; |
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596 } |
| 35742 | 597 } |
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598 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 599 NCH(n)); |
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600 return (cmpop_ty)0; |
| 35742 | 601 } |
| 602 | |
| 603 static asdl_seq * | |
| 604 seq_for_testlist(struct compiling *c, const node *n) | |
| 605 { | |
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606 /* testlist: test (',' test)* [','] |
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607 testlist_star_expr: test|star_expr (',' test|star_expr)* [','] |
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608 */ |
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609 asdl_seq *seq; |
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610 expr_ty expression; |
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611 int i; |
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612 assert(TYPE(n) == testlist || TYPE(n) == testlist_star_expr || TYPE(n) == testlist_comp); |
| 35742 | 613 |
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614 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 615 if (!seq) |
| 616 return NULL; | |
| 617 | |
| 618 for (i = 0; i < NCH(n); i += 2) { | |
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619 const node *ch = CHILD(n, i); |
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620 assert(TYPE(ch) == test || TYPE(ch) == test_nocond || TYPE(ch) == star_expr); |
| 35742 | 621 |
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622 expression = ast_for_expr(c, ch); |
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623 if (!expression) |
| 35742 | 624 return NULL; |
| 625 | |
| 626 assert(i / 2 < seq->size); | |
| 627 asdl_seq_SET(seq, i / 2, expression); | |
| 628 } | |
| 629 return seq; | |
| 630 } | |
| 631 | |
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632 static arg_ty |
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633 compiler_arg(struct compiling *c, const node *n) |
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634 { |
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635 identifier name; |
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636 expr_ty annotation = NULL; |
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637 node *ch; |
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638 |
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639 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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640 ch = CHILD(n, 0); |
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641 name = NEW_IDENTIFIER(ch); |
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642 if (!name) |
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643 return NULL; |
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644 if (forbidden_name(name, ch, 0)) |
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645 return NULL; |
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646 |
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647 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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648 annotation = ast_for_expr(c, CHILD(n, 2)); |
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649 if (!annotation) |
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650 return NULL; |
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651 } |
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652 |
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653 return arg(name, annotation, c->c_arena); |
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654 #if 0 |
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655 result = Tuple(args, Store, LINENO(n), n->n_col_offset, c->c_arena); |
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656 if (!set_context(c, result, Store, n)) |
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657 return NULL; |
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658 return result; |
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659 #endif |
| 35742 | 660 } |
| 661 | |
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662 /* returns -1 if failed to handle keyword only arguments |
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663 returns new position to keep processing if successful |
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664 (',' tfpdef ['=' test])* |
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665 ^^^ |
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666 start pointing here |
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667 */ |
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668 static int |
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669 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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670 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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671 { |
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672 PyObject *argname; |
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673 node *ch; |
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674 expr_ty expression, annotation; |
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675 arg_ty arg; |
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676 int i = start; |
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677 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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678 |
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679 if (kwonlyargs == NULL) { |
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680 ast_error(CHILD(n, start), "named arguments must follow bare *"); |
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681 return -1; |
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682 } |
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683 assert(kwdefaults != NULL); |
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684 while (i < NCH(n)) { |
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685 ch = CHILD(n, i); |
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686 switch (TYPE(ch)) { |
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687 case vfpdef: |
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688 case tfpdef: |
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689 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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690 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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691 asdl_seq_SET(kwdefaults, j, expression); |
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692 i += 2; /* '=' and test */ |
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693 } |
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694 else { /* setting NULL if no default value exists */ |
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695 asdl_seq_SET(kwdefaults, j, NULL); |
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696 } |
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697 if (NCH(ch) == 3) { |
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698 /* ch is NAME ':' test */ |
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699 annotation = ast_for_expr(c, CHILD(ch, 2)); |
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700 if (!annotation) { |
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701 ast_error(ch, "expected expression"); |
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702 goto error; |
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703 } |
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704 } |
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705 else { |
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706 annotation = NULL; |
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707 } |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
708 ch = CHILD(ch, 0); |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
709 argname = NEW_IDENTIFIER(ch); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
710 if (!argname) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
711 goto error; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
712 if (forbidden_name(argname, ch, 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
713 goto error; |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
714 arg = arg(argname, annotation, c->c_arena); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
715 if (!arg) |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
716 goto error; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
717 asdl_seq_SET(kwonlyargs, j++, arg); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
718 i += 2; /* the name and the comma */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
719 break; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
720 case DOUBLESTAR: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
721 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
722 default: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
723 ast_error(ch, "unexpected node"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
724 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
725 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
726 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
727 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
728 error: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
729 return -1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
730 } |
| 35742 | 731 |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
732 /* Create AST for argument list. */ |
| 35742 | 733 |
| 734 static arguments_ty | |
| 735 ast_for_arguments(struct compiling *c, const node *n) | |
| 736 { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
737 /* 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
|
738 and varargslist (lambda definition). |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
739 |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
740 parameters: '(' [typedargslist] ')' |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
741 typedargslist: ((tfpdef ['=' test] ',')* |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
742 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
743 | '**' tfpdef) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
744 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
745 tfpdef: NAME [':' test] |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
746 varargslist: ((vfpdef ['=' test] ',')* |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
747 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
748 | '**' vfpdef) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
749 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
750 vfpdef: NAME |
| 35742 | 751 */ |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
752 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
|
753 int nposdefaults = 0, found_default = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
754 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 755 identifier vararg = NULL, kwarg = NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
756 arg_ty arg; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
757 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 758 node *ch; |
| 759 | |
| 760 if (TYPE(n) == parameters) { | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
761 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
|
762 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
|
763 NULL, c->c_arena); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
764 n = CHILD(n, 1); |
| 35742 | 765 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
766 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 767 |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
768 /* First count the number of positional args & defaults. The |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
769 variable i is the loop index for this for loop and the next. |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
770 The next loop picks up where the first leaves off. |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
771 */ |
| 35742 | 772 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
|
773 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
774 if (TYPE(ch) == STAR) { |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
775 /* skip star */ |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
776 i++; |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
777 if (i < NCH(n) && /* skip argument following star */ |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
778 (TYPE(CHILD(n, i)) == tfpdef || |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
779 TYPE(CHILD(n, i)) == vfpdef)) { |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
780 i++; |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
781 } |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
782 break; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
783 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
784 if (TYPE(ch) == DOUBLESTAR) break; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
785 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
|
786 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
787 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
788 /* count the number of keyword only args & |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
789 defaults for keyword only args */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
790 for ( ; i < NCH(n); ++i) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
791 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
792 if (TYPE(ch) == DOUBLESTAR) break; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
793 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 794 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
795 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
|
796 if (!posargs && nposargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
797 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
798 kwonlyargs = (nkwonlyargs ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
799 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
|
800 if (!kwonlyargs && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
801 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
802 posdefaults = (nposdefaults ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
803 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
|
804 if (!posdefaults && nposdefaults) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
805 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
806 /* 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
|
807 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
|
808 - 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
|
809 kwdefaults = (nkwonlyargs ? |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
810 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
|
811 if (!kwdefaults && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
812 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
813 |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
814 if (nposargs + nkwonlyargs > 255) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
815 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
|
816 return NULL; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
817 } |
| 35742 | 818 |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
819 /* tfpdef: NAME [':' test] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
820 vfpdef: NAME |
| 35742 | 821 */ |
| 822 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
823 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
|
824 k = 0; /* index for args */ |
| 35742 | 825 while (i < NCH(n)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
826 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
827 switch (TYPE(ch)) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
828 case tfpdef: |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
829 case vfpdef: |
| 35742 | 830 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 831 anything other than EQUAL or a comma? */ | |
| 832 /* XXX Should NCH(n) check be made a separate check? */ | |
| 833 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
|
834 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
|
835 if (!expression) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
836 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
837 assert(posdefaults != NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
838 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 839 i += 2; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
840 found_default = 1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
841 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
842 else if (found_default) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
843 ast_error(n, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
844 "non-default argument follows default argument"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
845 goto error; |
| 35742 | 846 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
847 arg = compiler_arg(c, ch); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
848 if (!arg) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
849 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
850 asdl_seq_SET(posargs, k++, arg); |
| 35742 | 851 i += 2; /* the name and the comma */ |
| 852 break; | |
| 853 case STAR: | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
854 if (i+1 >= NCH(n)) { |
|
44246
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
855 ast_error(CHILD(n, i), |
|
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
856 "named arguments must follow bare *"); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
857 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
858 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
859 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
|
860 if (TYPE(ch) == COMMA) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
861 int res = 0; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
862 i += 2; /* now follows keyword only arguments */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
863 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
864 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
865 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
866 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
|
867 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
868 else { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
869 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
49844
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
870 if (!vararg) |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
871 return NULL; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
872 if (forbidden_name(vararg, CHILD(ch, 0), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
873 return NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
874 if (NCH(ch) > 1) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
875 /* 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
|
876 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
|
877 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
878 i += 3; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
879 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
|
880 || TYPE(CHILD(n, i)) == vfpdef)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
881 int res = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
882 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
883 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
884 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
885 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
|
886 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
887 } |
| 35742 | 888 break; |
| 889 case DOUBLESTAR: | |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
890 ch = CHILD(n, i+1); /* tfpdef */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
891 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
|
892 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
893 if (NCH(ch) > 1) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
894 /* 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
|
895 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
|
896 } |
|
49844
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
897 if (!kwarg) |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
898 goto error; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
899 if (forbidden_name(kwarg, CHILD(ch, 0), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
900 goto error; |
| 35742 | 901 i += 3; |
| 902 break; | |
| 903 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
904 PyErr_Format(PyExc_SystemError, |
| 35742 | 905 "unexpected node in varargslist: %d @ %d", |
| 906 TYPE(ch), i); | |
| 907 goto error; | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
908 } |
| 35742 | 909 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
910 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
|
911 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 912 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
|
913 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
|
914 Py_XDECREF(kwarg); |
| 35742 | 915 return NULL; |
| 916 } | |
| 917 | |
| 918 static expr_ty | |
| 919 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 920 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
921 expr_ty e; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
922 identifier id; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
923 int lineno, col_offset; |
| 35742 | 924 int i; |
| 925 | |
| 926 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
|
927 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
928 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
929 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
|
930 |
| 35742 | 931 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 932 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
|
933 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
934 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 935 if (!e) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
936 return NULL; |
| 35742 | 937 |
| 938 for (i = 2; i < NCH(n); i+=2) { | |
| 939 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
|
940 if (!id) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
941 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
942 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
|
943 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
944 return NULL; |
| 35742 | 945 } |
| 946 | |
| 947 return e; | |
| 948 } | |
| 949 | |
| 950 static expr_ty | |
| 951 ast_for_decorator(struct compiling *c, const node *n) | |
| 952 { | |
| 953 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 954 expr_ty d = NULL; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
955 expr_ty name_expr; |
| 35742 | 956 |
| 957 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
958 REQ(CHILD(n, 0), AT); |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
959 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 960 |
| 961 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 962 if (!name_expr) | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
963 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
964 |
| 35742 | 965 if (NCH(n) == 3) { /* No arguments */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
966 d = name_expr; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
967 name_expr = NULL; |
| 35742 | 968 } |
| 969 else if (NCH(n) == 5) { /* Call with no arguments */ | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
970 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
971 n->n_col_offset, c->c_arena); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
972 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
973 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
974 name_expr = NULL; |
| 35742 | 975 } |
| 976 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
977 d = ast_for_call(c, CHILD(n, 3), name_expr); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
978 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
979 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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980 name_expr = NULL; |
| 35742 | 981 } |
| 982 | |
| 983 return d; | |
| 984 } | |
| 985 | |
| 986 static asdl_seq* | |
| 987 ast_for_decorators(struct compiling *c, const node *n) | |
| 988 { | |
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989 asdl_seq* decorator_seq; |
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990 expr_ty d; |
| 35742 | 991 int i; |
| 992 | |
| 993 REQ(n, decorators); | |
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994 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 995 if (!decorator_seq) |
| 996 return NULL; | |
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997 |
| 35742 | 998 for (i = 0; i < NCH(n); i++) { |
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999 d = ast_for_decorator(c, CHILD(n, i)); |
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1000 if (!d) |
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1001 return NULL; |
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1002 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 1003 } |
| 1004 return decorator_seq; | |
| 1005 } | |
| 1006 | |
| 1007 static stmt_ty | |
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1008 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 1009 { |
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1010 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
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1011 identifier name; |
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1012 arguments_ty args; |
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1013 asdl_seq *body; |
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1014 expr_ty returns = NULL; |
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1015 int name_i = 1; |
| 35742 | 1016 |
| 1017 REQ(n, funcdef); | |
| 1018 | |
| 1019 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 1020 if (!name) | |
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1021 return NULL; |
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1022 if (forbidden_name(name, CHILD(n, name_i), 0)) |
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1023 return NULL; |
| 35742 | 1024 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 1025 if (!args) | |
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1026 return NULL; |
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1027 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
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1028 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
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1029 if (!returns) |
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1030 return NULL; |
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1031 name_i += 2; |
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1032 } |
| 35742 | 1033 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 1034 if (!body) | |
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1035 return NULL; |
| 35742 | 1036 |
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1037 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
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1038 n->n_col_offset, c->c_arena); |
| 35742 | 1039 } |
| 1040 | |
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1041 static stmt_ty |
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1042 ast_for_decorated(struct compiling *c, const node *n) |
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1043 { |
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1044 /* decorated: decorators (classdef | funcdef) */ |
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1045 stmt_ty thing = NULL; |
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1046 asdl_seq *decorator_seq = NULL; |
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1047 |
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1048 REQ(n, decorated); |
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1049 |
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1050 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
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1051 if (!decorator_seq) |
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1052 return NULL; |
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1053 |
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1054 assert(TYPE(CHILD(n, 1)) == funcdef || |
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1055 TYPE(CHILD(n, 1)) == classdef); |
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1056 |
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1057 if (TYPE(CHILD(n, 1)) == funcdef) { |
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1058 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
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1059 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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1060 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
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1061 } |
|
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1062 /* we count the decorators in when talking about the class' or |
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1063 * function's line number */ |
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1064 if (thing) { |
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1065 thing->lineno = LINENO(n); |
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1066 thing->col_offset = n->n_col_offset; |
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1067 } |
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1068 return thing; |
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1069 } |
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1070 |
| 35742 | 1071 static expr_ty |
| 1072 ast_for_lambdef(struct compiling *c, const node *n) | |
| 1073 { | |
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1074 /* lambdef: 'lambda' [varargslist] ':' test |
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1075 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1076 arguments_ty args; |
| 1077 expr_ty expression; | |
| 1078 | |
| 1079 if (NCH(n) == 3) { | |
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1080 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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1081 NULL, c->c_arena); |
| 35742 | 1082 if (!args) |
| 1083 return NULL; | |
| 1084 expression = ast_for_expr(c, CHILD(n, 2)); | |
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1085 if (!expression) |
| 35742 | 1086 return NULL; |
| 1087 } | |
| 1088 else { | |
| 1089 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1090 if (!args) | |
| 1091 return NULL; | |
| 1092 expression = ast_for_expr(c, CHILD(n, 3)); | |
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1093 if (!expression) |
| 35742 | 1094 return NULL; |
| 1095 } | |
| 1096 | |
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1097 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1098 } |
| 1099 | |
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1100 static expr_ty |
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1101 ast_for_ifexpr(struct compiling *c, const node *n) |
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1102 { |
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1103 /* test: or_test 'if' or_test 'else' test */ |
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1104 expr_ty expression, body, orelse; |
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1105 |
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1106 assert(NCH(n) == 5); |
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1107 body = ast_for_expr(c, CHILD(n, 0)); |
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1108 if (!body) |
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1109 return NULL; |
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1110 expression = ast_for_expr(c, CHILD(n, 2)); |
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1111 if (!expression) |
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1112 return NULL; |
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1113 orelse = ast_for_expr(c, CHILD(n, 4)); |
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1114 if (!orelse) |
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1115 return NULL; |
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1116 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
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1117 c->c_arena); |
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1118 } |
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1119 |
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1120 /* |
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1121 Count the number of 'for' loops in a comprehension. |
| 35742 | 1122 |
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1123 Helper for ast_for_comprehension(). |
| 35742 | 1124 */ |
| 1125 | |
| 1126 static int | |
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1127 count_comp_fors(struct compiling *c, const node *n) |
| 35742 | 1128 { |
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1129 int n_fors = 0; |
| 35742 | 1130 |
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1131 count_comp_for: |
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1132 n_fors++; |
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1133 REQ(n, comp_for); |
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1134 if (NCH(n) == 5) |
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1135 n = CHILD(n, 4); |
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1136 else |
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1137 return n_fors; |
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1138 count_comp_iter: |
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1139 REQ(n, comp_iter); |
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1140 n = CHILD(n, 0); |
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1141 if (TYPE(n) == comp_for) |
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1142 goto count_comp_for; |
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1143 else if (TYPE(n) == comp_if) { |
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1144 if (NCH(n) == 3) { |
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1145 n = CHILD(n, 2); |
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1146 goto count_comp_iter; |
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1147 } |
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1148 else |
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1149 return n_fors; |
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1150 } |
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1151 |
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1152 /* Should never be reached */ |
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1153 PyErr_SetString(PyExc_SystemError, |
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1154 "logic error in count_comp_fors"); |
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1155 return -1; |
| 35742 | 1156 } |
| 1157 | |
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1158 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1159 |
|
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1160 Helper for ast_for_comprehension(). |
| 35742 | 1161 */ |
| 1162 | |
| 1163 static int | |
|
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1164 count_comp_ifs(struct compiling *c, const node *n) |
| 35742 | 1165 { |
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1166 int n_ifs = 0; |
| 35742 | 1167 |
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1168 while (1) { |
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1169 REQ(n, comp_iter); |
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1170 if (TYPE(CHILD(n, 0)) == comp_for) |
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1171 return n_ifs; |
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1172 n = CHILD(n, 0); |
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1173 REQ(n, comp_if); |
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1174 n_ifs++; |
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1175 if (NCH(n) == 2) |
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1176 return n_ifs; |
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1177 n = CHILD(n, 2); |
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1178 } |
| 35742 | 1179 } |
| 1180 | |
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1181 static asdl_seq * |
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1182 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1183 { |
| 1184 int i, n_fors; | |
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1185 asdl_seq *comps; |
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1186 |
|
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1187 n_fors = count_comp_fors(c, n); |
| 35742 | 1188 if (n_fors == -1) |
| 1189 return NULL; | |
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1190 |
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1191 comps = asdl_seq_new(n_fors, c->c_arena); |
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1192 if (!comps) |
| 35742 | 1193 return NULL; |
|
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1194 |
| 35742 | 1195 for (i = 0; i < n_fors; i++) { |
|
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1196 comprehension_ty comp; |
| 35742 | 1197 asdl_seq *t; |
|
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1198 expr_ty expression, first; |
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1199 node *for_ch; |
| 35742 | 1200 |
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1201 REQ(n, comp_for); |
| 35742 | 1202 |
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1203 for_ch = CHILD(n, 1); |
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1204 t = ast_for_exprlist(c, for_ch, Store); |
|
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1205 if (!t) |
| 35742 | 1206 return NULL; |
|
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1207 expression = ast_for_expr(c, CHILD(n, 3)); |
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1208 if (!expression) |
| 35742 | 1209 return NULL; |
|
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1210 |
|
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1211 /* Check the # of children rather than the length of t, since |
|
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1212 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
|
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1213 first = (expr_ty)asdl_seq_GET(t, 0); |
|
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1214 if (NCH(for_ch) == 1) |
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1215 comp = comprehension(first, expression, NULL, c->c_arena); |
| 35742 | 1216 else |
|
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1217 comp = comprehension(Tuple(t, Store, first->lineno, first->col_offset, |
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1218 c->c_arena), |
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1219 expression, NULL, c->c_arena); |
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1220 if (!comp) |
| 35742 | 1221 return NULL; |
|
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1222 |
|
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1223 if (NCH(n) == 5) { |
| 35742 | 1224 int j, n_ifs; |
| 1225 asdl_seq *ifs; | |
| 1226 | |
|
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1227 n = CHILD(n, 4); |
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1228 n_ifs = count_comp_ifs(c, n); |
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1229 if (n_ifs == -1) |
| 35742 | 1230 return NULL; |
|
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1231 |
|
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1232 ifs = asdl_seq_new(n_ifs, c->c_arena); |
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1233 if (!ifs) |
| 35742 | 1234 return NULL; |
|
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1235 |
| 35742 | 1236 for (j = 0; j < n_ifs; j++) { |
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1237 REQ(n, comp_iter); |
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1238 n = CHILD(n, 0); |
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1239 REQ(n, comp_if); |
| 35742 | 1240 |
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1241 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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1242 if (!expression) |
|
35798
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Write a separate ast_for_testlist_gexp() function instead of overloading
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|
1243 return NULL; |
|
36718
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Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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1244 asdl_seq_SET(ifs, j, expression); |
|
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1245 if (NCH(n) == 3) |
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1246 n = CHILD(n, 2); |
| 35742 | 1247 } |
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1248 /* on exit, must guarantee that n is a comp_for */ |
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1249 if (TYPE(n) == comp_iter) |
|
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1250 n = CHILD(n, 0); |
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1251 comp->ifs = ifs; |
| 35742 | 1252 } |
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1253 asdl_seq_SET(comps, i, comp); |
| 35742 | 1254 } |
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1255 return comps; |
|
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1256 } |
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1257 |
|
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|
1258 static expr_ty |
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|
1259 ast_for_itercomp(struct compiling *c, const node *n, int type) |
|
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1260 { |
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1261 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1262 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1263 expr_ty elt; |
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1264 asdl_seq *comps; |
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1265 |
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1266 assert(NCH(n) > 1); |
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1267 |
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1268 elt = ast_for_expr(c, CHILD(n, 0)); |
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1269 if (!elt) |
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1270 return NULL; |
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1271 |
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1272 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1273 if (!comps) |
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1274 return NULL; |
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1275 |
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1276 if (type == COMP_GENEXP) |
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1277 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1278 else if (type == COMP_LISTCOMP) |
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1279 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1280 else if (type == COMP_SETCOMP) |
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1281 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1282 else |
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1283 /* Should never happen */ |
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1284 return NULL; |
| 35742 | 1285 } |
| 1286 | |
| 1287 static expr_ty | |
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1288 ast_for_dictcomp(struct compiling *c, const node *n) |
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1289 { |
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1290 expr_ty key, value; |
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1291 asdl_seq *comps; |
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1292 |
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1293 assert(NCH(n) > 3); |
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1294 REQ(CHILD(n, 1), COLON); |
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1295 |
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1296 key = ast_for_expr(c, CHILD(n, 0)); |
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1297 if (!key) |
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1298 return NULL; |
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1299 value = ast_for_expr(c, CHILD(n, 2)); |
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1300 if (!value) |
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1301 return NULL; |
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1302 |
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1303 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1304 if (!comps) |
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1305 return NULL; |
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1306 |
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1307 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1308 } |
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1309 |
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1310 static expr_ty |
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1311 ast_for_genexp(struct compiling *c, const node *n) |
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1312 { |
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1313 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1314 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1315 } |
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1316 |
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1317 static expr_ty |
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1318 ast_for_listcomp(struct compiling *c, const node *n) |
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1319 { |
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1320 assert(TYPE(n) == (testlist_comp)); |
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1321 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1322 } |
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1323 |
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1324 static expr_ty |
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1325 ast_for_setcomp(struct compiling *c, const node *n) |
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1326 { |
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1327 assert(TYPE(n) == (dictorsetmaker)); |
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1328 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1329 } |
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1330 |
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1331 |
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1332 static expr_ty |
| 35742 | 1333 ast_for_atom(struct compiling *c, const node *n) |
| 1334 { | |
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1335 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1336 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
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1337 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1338 */ |
| 1339 node *ch = CHILD(n, 0); | |
| 40894 | 1340 int bytesmode = 0; |
| 35742 | 1341 |
| 1342 switch (TYPE(ch)) { | |
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1343 case NAME: { |
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1344 /* All names start in Load context, but may later be |
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1345 changed. */ |
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1346 PyObject *name = NEW_IDENTIFIER(ch); |
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1347 if (!name) |
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1348 return NULL; |
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1349 return Name(name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1350 } |
| 35742 | 1351 case STRING: { |
| 40894 | 1352 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1353 if (!str) { |
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1354 if (PyErr_ExceptionMatches(PyExc_UnicodeError)) { |
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1355 PyObject *type, *value, *tback, *errstr; |
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1356 PyErr_Fetch(&type, &value, &tback); |
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1357 errstr = PyObject_Str(value); |
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1358 if (errstr) { |
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1359 char *s = ""; |
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1360 char buf[128]; |
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1361 s = _PyUnicode_AsString(errstr); |
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1362 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
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1363 ast_error(n, buf); |
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1364 Py_DECREF(errstr); |
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1365 } else { |
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1366 ast_error(n, "(unicode error) unknown error"); |
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1367 } |
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1368 Py_DECREF(type); |
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1369 Py_DECREF(value); |
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1370 Py_XDECREF(tback); |
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1371 } |
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1372 return NULL; |
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1373 } |
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1374 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1375 if (bytesmode) |
| 1376 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1377 else | |
| 1378 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1379 } |
| 1380 case NUMBER: { | |
|
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1381 PyObject *pynum = parsenumber(c, STR(ch)); |
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1382 if (!pynum) |
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1383 return NULL; |
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1384 |
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1385 PyArena_AddPyObject(c->c_arena, pynum); |
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1386 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1387 } |
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1388 case ELLIPSIS: /* Ellipsis */ |
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1389 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1390 case LPAR: /* some parenthesized expressions */ |
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1391 ch = CHILD(n, 1); |
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1392 |
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1393 if (TYPE(ch) == RPAR) |
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1394 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1395 |
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1396 if (TYPE(ch) == yield_expr) |
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1397 return ast_for_expr(c, ch); |
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1398 |
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1399 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
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1400 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
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1401 return ast_for_genexp(c, ch); |
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1402 |
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1403 return ast_for_testlist(c, ch); |
| 35742 | 1404 case LSQB: /* list (or list comprehension) */ |
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1405 ch = CHILD(n, 1); |
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1406 |
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1407 if (TYPE(ch) == RSQB) |
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1408 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1409 |
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1410 REQ(ch, testlist_comp); |
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1411 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
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1412 asdl_seq *elts = seq_for_testlist(c, ch); |
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1413 if (!elts) |
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1414 return NULL; |
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1415 |
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1416 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1417 } |
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1418 else |
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1419 return ast_for_listcomp(c, ch); |
| 35742 | 1420 case LBRACE: { |
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1421 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
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1422 * test (gen_for | (',' test)* [',']) */ |
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1423 int i, size; |
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1424 asdl_seq *keys, *values; |
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1425 |
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1426 ch = CHILD(n, 1); |
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1427 if (TYPE(ch) == RBRACE) { |
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1428 /* it's an empty dict */ |
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1429 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
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1430 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
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1431 /* it's a simple set */ |
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1432 asdl_seq *elts; |
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1433 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
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1434 elts = asdl_seq_new(size, c->c_arena); |
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1435 if (!elts) |
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1436 return NULL; |
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1437 for (i = 0; i < NCH(ch); i += 2) { |
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1438 expr_ty expression; |
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1439 expression = ast_for_expr(c, CHILD(ch, i)); |
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1440 if (!expression) |
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1441 return NULL; |
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1442 asdl_seq_SET(elts, i / 2, expression); |
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1443 } |
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1444 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
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1445 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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1446 /* it's a set comprehension */ |
|
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1447 return ast_for_setcomp(c, ch); |
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1448 } else if (NCH(ch) > 3 && TYPE(CHILD(ch, 3)) == comp_for) { |
|
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|
1449 return ast_for_dictcomp(c, ch); |
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1450 } else { |
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1451 /* it's a dict */ |
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1452 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
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1453 keys = asdl_seq_new(size, c->c_arena); |
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1454 if (!keys) |
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1455 return NULL; |
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1456 |
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1457 values = asdl_seq_new(size, c->c_arena); |
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1458 if (!values) |
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1459 return NULL; |
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1460 |
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1461 for (i = 0; i < NCH(ch); i += 4) { |
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|
1462 expr_ty expression; |
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1463 |
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|
1464 expression = ast_for_expr(c, CHILD(ch, i)); |
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1465 if (!expression) |
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|
1466 return NULL; |
|
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1467 |
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1468 asdl_seq_SET(keys, i / 4, expression); |
|
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1469 |
|
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1470 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
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1471 if (!expression) |
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|
1472 return NULL; |
|
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1473 |
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|
1474 asdl_seq_SET(values, i / 4, expression); |
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|
1475 } |
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|
1476 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1477 } |
| 35742 | 1478 } |
| 1479 default: | |
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1480 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
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|
1481 return NULL; |
| 35742 | 1482 } |
| 1483 } | |
| 1484 | |
| 1485 static slice_ty | |
| 1486 ast_for_slice(struct compiling *c, const node *n) | |
| 1487 { | |
| 1488 node *ch; | |
| 1489 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1490 | |
| 1491 REQ(n, subscript); | |
| 1492 | |
| 1493 /* | |
|
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|
1494 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1495 sliceop: ':' [test] |
| 1496 */ | |
| 1497 ch = CHILD(n, 0); | |
| 1498 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1499 /* 'step' variable hold no significance in terms of being used over | |
| 1500 other vars */ | |
| 1501 step = ast_for_expr(c, ch); | |
| 1502 if (!step) | |
| 1503 return NULL; | |
| 1504 | |
|
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1505 return Index(step, c->c_arena); |
| 35742 | 1506 } |
| 1507 | |
| 1508 if (TYPE(ch) == test) { | |
|
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parents:
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diff
changeset
|
1509 lower = ast_for_expr(c, ch); |
| 35742 | 1510 if (!lower) |
| 1511 return NULL; | |
| 1512 } | |
| 1513 | |
| 1514 /* If there's an upper bound it's in the second or third position. */ | |
| 1515 if (TYPE(ch) == COLON) { | |
|
40450
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Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
1516 if (NCH(n) > 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1517 node *n2 = CHILD(n, 1); |
| 35742 | 1518 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
1519 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1520 upper = ast_for_expr(c, n2); |
| 35742 | 1521 if (!upper) |
| 1522 return NULL; | |
| 1523 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1524 } |
| 35742 | 1525 } else if (NCH(n) > 2) { |
|
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
changeset
|
1526 node *n2 = CHILD(n, 2); |
| 35742 | 1527 |
|
40450
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1528 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1529 upper = ast_for_expr(c, n2); |
| 35742 | 1530 if (!upper) |
| 1531 return NULL; | |
| 1532 } | |
| 1533 } | |
| 1534 | |
| 1535 ch = CHILD(n, NCH(n) - 1); | |
| 1536 if (TYPE(ch) == sliceop) { | |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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|
1537 if (NCH(ch) != 1) { |
|
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Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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|
1538 ch = CHILD(ch, 1); |
|
f731859e9b3b
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Thomas Wouters <thomas@python.org>
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|
1539 if (TYPE(ch) == test) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
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changeset
|
1540 step = ast_for_expr(c, ch); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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|
1541 if (!step) |
|
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
|
1542 return NULL; |
|
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
|
1543 } |
| 35742 | 1544 } |
| 1545 } | |
| 1546 | |
|
36065
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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parents:
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diff
changeset
|
1547 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1548 } |
| 1549 | |
| 1550 static expr_ty | |
| 1551 ast_for_binop(struct compiling *c, const node *n) | |
| 1552 { | |
|
41554
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|
1553 /* Must account for a sequence of expressions. |
|
06145fbc7ab9
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|
1554 How should A op B op C by represented? |
|
06145fbc7ab9
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|
1555 BinOp(BinOp(A, op, B), op, C). |
|
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|
1556 */ |
| 35742 | 1557 |
|
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|
1558 int i, nops; |
|
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|
1559 expr_ty expr1, expr2, result; |
|
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|
1560 operator_ty newoperator; |
|
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|
1561 |
|
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|
1562 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
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|
1563 if (!expr1) |
|
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|
1564 return NULL; |
| 35742 | 1565 |
|
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|
1566 expr2 = ast_for_expr(c, CHILD(n, 2)); |
|
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|
1567 if (!expr2) |
|
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|
1568 return NULL; |
|
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|
1569 |
|
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|
1570 newoperator = get_operator(CHILD(n, 1)); |
|
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|
1571 if (!newoperator) |
|
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|
1572 return NULL; |
| 35742 | 1573 |
|
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|
1574 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
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|
1575 c->c_arena); |
|
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|
1576 if (!result) |
|
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|
1577 return NULL; |
| 35742 | 1578 |
|
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|
1579 nops = (NCH(n) - 1) / 2; |
|
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|
1580 for (i = 1; i < nops; i++) { |
|
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|
1581 expr_ty tmp_result, tmp; |
|
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|
1582 const node* next_oper = CHILD(n, i * 2 + 1); |
|
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|
1583 |
|
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|
1584 newoperator = get_operator(next_oper); |
|
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|
1585 if (!newoperator) |
| 35742 | 1586 return NULL; |
| 1587 | |
|
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|
1588 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
|
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|
1589 if (!tmp) |
| 35742 | 1590 return NULL; |
| 1591 | |
|
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|
1592 tmp_result = BinOp(result, newoperator, tmp, |
|
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|
1593 LINENO(next_oper), next_oper->n_col_offset, |
|
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|
1594 c->c_arena); |
|
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|
1595 if (!tmp_result) |
|
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|
1596 return NULL; |
|
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|
1597 result = tmp_result; |
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|
1598 } |
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|
1599 return result; |
| 35742 | 1600 } |
| 1601 | |
|
35799
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|
1602 static expr_ty |
|
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|
1603 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
|
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|
1604 { |
|
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|
1605 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
|
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|
1606 subscriptlist: subscript (',' subscript)* [','] |
|
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|
1607 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
8611f39cd82b
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|
1608 */ |
|
35799
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|
1609 REQ(n, trailer); |
|
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|
1610 if (TYPE(CHILD(n, 0)) == LPAR) { |
|
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|
1611 if (NCH(n) == 2) |
|
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|
1612 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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1613 n->n_col_offset, c->c_arena); |
|
35799
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|
1614 else |
|
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|
1615 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
35799
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1616 } |
|
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1617 else if (TYPE(CHILD(n, 0)) == DOT ) { |
|
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1618 PyObject *attr_id = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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1619 if (!attr_id) |
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1620 return NULL; |
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1621 return Attribute(left_expr, attr_id, Load, |
|
36786
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|
1622 LINENO(n), n->n_col_offset, c->c_arena); |
|
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1623 } |
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1624 else { |
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|
1625 REQ(CHILD(n, 0), LSQB); |
|
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|
1626 REQ(CHILD(n, 2), RSQB); |
|
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|
1627 n = CHILD(n, 1); |
|
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|
1628 if (NCH(n) == 1) { |
|
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|
1629 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
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|
1630 if (!slc) |
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|
1631 return NULL; |
|
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|
1632 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
|
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|
1633 c->c_arena); |
|
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|
1634 } |
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|
1635 else { |
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|
1636 /* The grammar is ambiguous here. The ambiguity is resolved |
|
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|
1637 by treating the sequence as a tuple literal if there are |
|
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|
1638 no slice features. |
|
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|
1639 */ |
|
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changeset
|
1640 int j; |
|
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|
1641 slice_ty slc; |
|
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diff
changeset
|
1642 expr_ty e; |
|
40941
2ca14d6a369b
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40894
diff
changeset
|
1643 int simple = 1; |
|
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diff
changeset
|
1644 asdl_seq *slices, *elts; |
|
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|
1645 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
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diff
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|
1646 if (!slices) |
|
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|
1647 return NULL; |
|
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Refactor code for translating "power" nodes.
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diff
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|
1648 for (j = 0; j < NCH(n); j += 2) { |
|
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diff
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|
1649 slc = ast_for_slice(c, CHILD(n, j)); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1650 if (!slc) |
|
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diff
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|
1651 return NULL; |
|
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Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1652 if (slc->kind != Index_kind) |
|
40941
2ca14d6a369b
Whoops, fix build breakage. There were still a few uses of the bool type.
Neal Norwitz <nnorwitz@gmail.com>
parents:
40894
diff
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|
1653 simple = 0; |
|
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diff
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|
1654 asdl_seq_SET(slices, j / 2, slc); |
|
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|
1655 } |
|
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Fix parsing of subscriptlist.
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diff
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|
1656 if (!simple) { |
|
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Fix parsing of subscriptlist.
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diff
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|
1657 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
|
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57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
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|
1658 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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Fix parsing of subscriptlist.
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diff
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|
1659 } |
|
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Fix parsing of subscriptlist.
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diff
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|
1660 /* extract Index values and put them in a Tuple */ |
|
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Fix parsing of subscriptlist.
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diff
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|
1661 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
36877
e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
parents:
36786
diff
changeset
|
1662 if (!elts) |
|
e9a7a2784e17
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Hye-Shik Chang <hyeshik@gmail.com>
parents:
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diff
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|
1663 return NULL; |
|
36686
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Fix parsing of subscriptlist.
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diff
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|
1664 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
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Fix parsing of subscriptlist.
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diff
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|
1665 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
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Fix parsing of subscriptlist.
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|
1666 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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|
1667 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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diff
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|
1668 } |
|
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57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
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|
1669 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1670 if (!e) |
|
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Fix parsing of subscriptlist.
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|
1671 return NULL; |
|
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Fix parsing of subscriptlist.
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36682
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|
1672 return Subscript(left_expr, Index(e, c->c_arena), |
|
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57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
36780
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|
1673 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1674 } |
|
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|
1675 } |
|
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Refactor code for translating "power" nodes.
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|
1676 } |
|
842caa245917
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|
1677 |
|
842caa245917
Refactor code for translating "power" nodes.
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|
1678 static expr_ty |
|
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|
1679 ast_for_factor(struct compiling *c, const node *n) |
|
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|
1680 { |
|
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|
1681 node *pfactor, *ppower, *patom, *pnum; |
|
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|
1682 expr_ty expression; |
|
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|
1683 |
|
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|
1684 /* If the unary - operator is applied to a constant, don't generate |
|
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|
1685 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
|
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|
1686 constant. The peephole optimizer already does something like |
|
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|
1687 this but it doesn't handle the case where the constant is |
|
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|
1688 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
|
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|
1689 PyLongObject. |
|
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1690 */ |
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|
1691 if (TYPE(CHILD(n, 0)) == MINUS |
|
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|
1692 && NCH(n) == 2 |
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|
1693 && TYPE((pfactor = CHILD(n, 1))) == factor |
|
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|
1694 && NCH(pfactor) == 1 |
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|
1695 && TYPE((ppower = CHILD(pfactor, 0))) == power |
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|
1696 && NCH(ppower) == 1 |
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|
1697 && TYPE((patom = CHILD(ppower, 0))) == atom |
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1698 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
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|
1699 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
|
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|
1700 if (s == NULL) |
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|
1701 return NULL; |
|
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|
1702 s[0] = '-'; |
|
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|
1703 strcpy(s + 1, STR(pnum)); |
|
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|
1704 PyObject_FREE(STR(pnum)); |
|
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|
1705 STR(pnum) = s; |
|
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|
1706 return ast_for_atom(c, patom); |
|
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|
1707 } |
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|
1708 |
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|
1709 expression = ast_for_expr(c, CHILD(n, 1)); |
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|
1710 if (!expression) |
|
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|
1711 return NULL; |
|
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|
1712 |
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|
1713 switch (TYPE(CHILD(n, 0))) { |
|
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|
1714 case PLUS: |
|
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|
1715 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
|
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|
1716 c->c_arena); |
|
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|
1717 case MINUS: |
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|
1718 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
|
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1719 c->c_arena); |
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|
1720 case TILDE: |
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|
1721 return UnaryOp(Invert, expression, LINENO(n), |
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1722 n->n_col_offset, c->c_arena); |
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1723 } |
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1724 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
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1725 TYPE(CHILD(n, 0))); |
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|
1726 return NULL; |
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1727 } |
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|
1728 |
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|
1729 static expr_ty |
|
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|
1730 ast_for_power(struct compiling *c, const node *n) |
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1731 { |
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|
1732 /* power: atom trailer* ('**' factor)* |
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|
1733 */ |
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|
1734 int i; |
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|
1735 expr_ty e, tmp; |
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|
1736 REQ(n, power); |
|
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|
1737 e = ast_for_atom(c, CHILD(n, 0)); |
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|
1738 if (!e) |
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|
1739 return NULL; |
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|
1740 if (NCH(n) == 1) |
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1741 return e; |
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|
1742 for (i = 1; i < NCH(n); i++) { |
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|
1743 node *ch = CHILD(n, i); |
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|
1744 if (TYPE(ch) != trailer) |
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|
1745 break; |
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|
1746 tmp = ast_for_trailer(c, ch, e); |
|
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|
1747 if (!tmp) |
|
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1748 return NULL; |
|
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1749 tmp->lineno = e->lineno; |
|
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|
1750 tmp->col_offset = e->col_offset; |
|
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|
1751 e = tmp; |
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1752 } |
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1753 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
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1754 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
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1755 if (!f) |
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1756 return NULL; |
|
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1757 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1758 if (!tmp) |
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1759 return NULL; |
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1760 e = tmp; |
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1761 } |
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1762 return e; |
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|
1763 } |
|
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1764 |
|
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1765 static expr_ty |
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1766 ast_for_starred(struct compiling *c, const node *n) |
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1767 { |
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1768 expr_ty tmp; |
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1769 REQ(n, star_expr); |
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1770 |
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1771 tmp = ast_for_expr(c, CHILD(n, 1)); |
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1772 if (!tmp) |
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1773 return NULL; |
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1775 /* The Load context is changed later. */ |
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1776 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1777 } |
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1778 |
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1779 |
| 35742 | 1780 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1781 */ | |
| 1782 | |
| 1783 static expr_ty | |
| 1784 ast_for_expr(struct compiling *c, const node *n) | |
| 1785 { | |
| 1786 /* handle the full range of simple expressions | |
|
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1787 test: or_test ['if' or_test 'else' test] | lambdef |
|
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1788 test_nocond: or_test | lambdef_nocond |
|
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1789 or_test: and_test ('or' and_test)* |
| 35742 | 1790 and_test: not_test ('and' not_test)* |
| 1791 not_test: 'not' not_test | comparison | |
| 1792 comparison: expr (comp_op expr)* | |
| 1793 expr: xor_expr ('|' xor_expr)* | |
| 1794 xor_expr: and_expr ('^' and_expr)* | |
| 1795 and_expr: shift_expr ('&' shift_expr)* | |
| 1796 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1797 arith_expr: term (('+'|'-') term)* | |
| 1798 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1799 factor: ('+'|'-'|'~') factor | power | |
| 1800 power: atom trailer* ('**' factor)* | |
| 1801 */ | |
| 1802 | |
| 1803 asdl_seq *seq; | |
| 1804 int i; | |
| 1805 | |
| 1806 loop: | |
| 1807 switch (TYPE(n)) { | |
| 1808 case test: | |
|
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1809 case test_nocond: |
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1810 if (TYPE(CHILD(n, 0)) == lambdef || |
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1811 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1812 return ast_for_lambdef(c, CHILD(n, 0)); |
|
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1813 else if (NCH(n) > 1) |
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1814 return ast_for_ifexpr(c, n); |
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1815 /* Fallthrough */ |
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1816 case or_test: |
| 35742 | 1817 case and_test: |
| 1818 if (NCH(n) == 1) { | |
| 1819 n = CHILD(n, 0); | |
| 1820 goto loop; | |
| 1821 } | |
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1822 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1823 if (!seq) |
| 1824 return NULL; | |
| 1825 for (i = 0; i < NCH(n); i += 2) { | |
| 1826 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1827 if (!e) | |
| 1828 return NULL; | |
| 1829 asdl_seq_SET(seq, i / 2, e); | |
| 1830 } | |
| 1831 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
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1832 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
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1833 c->c_arena); |
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1834 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
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1835 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1836 case not_test: |
| 1837 if (NCH(n) == 1) { | |
| 1838 n = CHILD(n, 0); | |
| 1839 goto loop; | |
| 1840 } | |
| 1841 else { | |
| 1842 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1843 if (!expression) | |
| 1844 return NULL; | |
| 1845 | |
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1846 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
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1847 c->c_arena); |
| 35742 | 1848 } |
| 1849 case comparison: | |
| 1850 if (NCH(n) == 1) { | |
| 1851 n = CHILD(n, 0); | |
| 1852 goto loop; | |
| 1853 } | |
| 1854 else { | |
| 1855 expr_ty expression; | |
|
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1856 asdl_int_seq *ops; |
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1857 asdl_seq *cmps; |
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1858 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1859 if (!ops) |
| 1860 return NULL; | |
|
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1861 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1862 if (!cmps) { |
| 1863 return NULL; | |
| 1864 } | |
| 1865 for (i = 1; i < NCH(n); i += 2) { | |
|
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1866 cmpop_ty newoperator; |
| 35742 | 1867 |
|
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1868 newoperator = ast_for_comp_op(c, CHILD(n, i)); |
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1869 if (!newoperator) { |
| 35742 | 1870 return NULL; |
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1871 } |
| 35742 | 1872 |
| 1873 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
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1874 if (!expression) { |
| 35742 | 1875 return NULL; |
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1876 } |
| 35742 | 1877 |
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1878 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1879 asdl_seq_SET(cmps, i / 2, expression); |
| 1880 } | |
| 1881 expression = ast_for_expr(c, CHILD(n, 0)); | |
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1882 if (!expression) { |
| 35742 | 1883 return NULL; |
|
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1884 } |
| 35742 | 1885 |
|
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1886 return Compare(expression, ops, cmps, LINENO(n), |
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1887 n->n_col_offset, c->c_arena); |
| 35742 | 1888 } |
| 1889 break; | |
| 1890 | |
|
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1891 case star_expr: |
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1892 if (TYPE(CHILD(n, 0)) == STAR) |
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1893 return ast_for_starred(c, n); |
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1894 /* Fall through to generic case. */ |
| 35742 | 1895 /* The next five cases all handle BinOps. The main body of code |
| 1896 is the same in each case, but the switch turned inside out to | |
| 1897 reuse the code for each type of operator. | |
| 1898 */ | |
| 1899 case expr: | |
| 1900 case xor_expr: | |
| 1901 case and_expr: | |
| 1902 case shift_expr: | |
| 1903 case arith_expr: | |
| 1904 case term: | |
| 1905 if (NCH(n) == 1) { | |
| 1906 n = CHILD(n, 0); | |
| 1907 goto loop; | |
| 1908 } | |
| 1909 return ast_for_binop(c, n); | |
| 1910 case yield_expr: { | |
|
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1911 expr_ty exp = NULL; |
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1912 if (NCH(n) == 2) { |
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1913 exp = ast_for_testlist(c, CHILD(n, 1)); |
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1914 if (!exp) |
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1915 return NULL; |
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1916 } |
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1917 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
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1918 } |
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1919 case factor: |
| 35742 | 1920 if (NCH(n) == 1) { |
| 1921 n = CHILD(n, 0); | |
| 1922 goto loop; | |
| 1923 } | |
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1924 return ast_for_factor(c, n); |
|
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1925 case power: |
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1926 return ast_for_power(c, n); |
| 35742 | 1927 default: |
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1928 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1929 return NULL; |
| 1930 } | |
|
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1931 /* should never get here unless if error is set */ |
| 35742 | 1932 return NULL; |
| 1933 } | |
| 1934 | |
| 1935 static expr_ty | |
| 1936 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1937 { | |
| 1938 /* | |
| 1939 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1940 | '**' test) | |
|
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1941 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1942 */ |
| 1943 | |
| 1944 int i, nargs, nkeywords, ngens; | |
|
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1945 asdl_seq *args; |
|
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1946 asdl_seq *keywords; |
| 35742 | 1947 expr_ty vararg = NULL, kwarg = NULL; |
| 1948 | |
| 1949 REQ(n, arglist); | |
| 1950 | |
| 1951 nargs = 0; | |
| 1952 nkeywords = 0; | |
| 1953 ngens = 0; | |
| 1954 for (i = 0; i < NCH(n); i++) { | |
|
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1955 node *ch = CHILD(n, i); |
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1956 if (TYPE(ch) == argument) { |
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1957 if (NCH(ch) == 1) |
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1958 nargs++; |
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1959 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1960 ngens++; |
| 35742 | 1961 else |
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1962 nkeywords++; |
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1963 } |
| 35742 | 1964 } |
| 1965 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
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1966 ast_error(n, "Generator expression must be parenthesized " |
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1967 "if not sole argument"); |
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1968 return NULL; |
| 35742 | 1969 } |
| 1970 | |
| 1971 if (nargs + nkeywords + ngens > 255) { | |
| 1972 ast_error(n, "more than 255 arguments"); | |
| 1973 return NULL; | |
| 1974 } | |
| 1975 | |
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1976 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1977 if (!args) |
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1978 return NULL; |
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1979 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1980 if (!keywords) |
|
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1981 return NULL; |
| 35742 | 1982 nargs = 0; |
| 1983 nkeywords = 0; | |
| 1984 for (i = 0; i < NCH(n); i++) { | |
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1985 node *ch = CHILD(n, i); |
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1986 if (TYPE(ch) == argument) { |
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1987 expr_ty e; |
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1988 if (NCH(ch) == 1) { |
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1989 if (nkeywords) { |
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1990 ast_error(CHILD(ch, 0), |
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1991 "non-keyword arg after keyword arg"); |
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1992 return NULL; |
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1993 } |
|
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1994 if (vararg) { |
|
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1995 ast_error(CHILD(ch, 0), |
|
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1996 "only named arguments may follow *expression"); |
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1997 return NULL; |
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1998 } |
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1999 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 2000 if (!e) |
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2001 return NULL; |
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2002 asdl_seq_SET(args, nargs++, e); |
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2003 } |
|
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2004 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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2005 e = ast_for_genexp(c, ch); |
| 35742 | 2006 if (!e) |
|
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2007 return NULL; |
|
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2008 asdl_seq_SET(args, nargs++, e); |
| 35742 | 2009 } |
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2010 else { |
|
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2011 keyword_ty kw; |
|
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|
2012 identifier key, tmp; |
|
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|
2013 int k; |
| 35742 | 2014 |
|
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2015 /* CHILD(ch, 0) is test, but must be an identifier? */ |
|
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2016 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 2017 if (!e) |
|
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2018 return NULL; |
| 35742 | 2019 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 2020 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 2021 * SF bug 132313 points out that complaining about a keyword | |
| 2022 * then is very confusing. | |
| 2023 */ | |
| 2024 if (e->kind == Lambda_kind) { | |
| 2025 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
|
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2026 return NULL; |
| 35742 | 2027 } else if (e->kind != Name_kind) { |
| 2028 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
|
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2029 return NULL; |
|
54954
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2030 } else if (forbidden_name(e->v.Name.id, ch, 1)) { |
|
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2031 return NULL; |
|
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2032 } |
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2033 key = e->v.Name.id; |
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2034 for (k = 0; k < nkeywords; k++) { |
|
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2035 tmp = ((keyword_ty)asdl_seq_GET(keywords, k))->arg; |
|
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|
2036 if (!PyUnicode_Compare(tmp, key)) { |
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2037 ast_error(CHILD(ch, 0), "keyword argument repeated"); |
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2038 return NULL; |
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2039 } |
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2040 } |
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2041 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 2042 if (!e) |
|
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2043 return NULL; |
|
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2044 kw = keyword(key, e, c->c_arena); |
| 35742 | 2045 if (!kw) |
|
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|
2046 return NULL; |
|
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2047 asdl_seq_SET(keywords, nkeywords++, kw); |
|
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2048 } |
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2049 } |
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2050 else if (TYPE(ch) == STAR) { |
|
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2051 vararg = ast_for_expr(c, CHILD(n, i+1)); |
|
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2052 if (!vararg) |
|
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2053 return NULL; |
|
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2054 i++; |
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2055 } |
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2056 else if (TYPE(ch) == DOUBLESTAR) { |
|
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2057 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
|
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2058 if (!kwarg) |
|
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2059 return NULL; |
|
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2060 i++; |
|
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2061 } |
| 35742 | 2062 } |
| 2063 | |
|
36786
57322cb2ca11
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|
2064 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 2065 } |
| 2066 | |
| 2067 static expr_ty | |
|
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2068 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 2069 { |
|
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|
2070 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
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|
2071 /* testlist: test (',' test)* [','] */ |
| 35742 | 2072 assert(NCH(n) > 0); |
|
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|
2073 if (TYPE(n) == testlist_comp) { |
|
35798
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|
2074 if (NCH(n) > 1) |
|
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|
2075 assert(TYPE(CHILD(n, 1)) != comp_for); |
|
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|
2076 } |
|
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|
2077 else { |
|
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|
2078 assert(TYPE(n) == testlist || |
|
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2079 TYPE(n) == testlist_star_expr); |
|
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2080 } |
| 35742 | 2081 if (NCH(n) == 1) |
|
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2082 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 2083 else { |
| 2084 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 2085 if (!tmp) | |
| 2086 return NULL; | |
|
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|
2087 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2088 } |
|
35798
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|
2089 } |
|
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|
2090 |
| 35742 | 2091 static stmt_ty |
| 2092 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2093 { | |
| 2094 REQ(n, expr_stmt); | |
|
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2095 /* expr_stmt: testlist_star_expr (augassign (yield_expr|testlist) |
| 35742 | 2096 | ('=' (yield_expr|testlist))*) |
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2097 testlist_star_expr: (test|star_expr) (',' test|star_expr)* [','] |
| 35742 | 2098 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' |
|
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2099 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2100 test: ... here starts the operator precendence dance |
| 2101 */ | |
| 2102 | |
| 2103 if (NCH(n) == 1) { | |
|
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2104 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2105 if (!e) |
| 2106 return NULL; | |
| 2107 | |
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2108 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2109 } |
| 2110 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2111 expr_ty expr1, expr2; | |
|
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2112 operator_ty newoperator; |
|
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2113 node *ch = CHILD(n, 0); |
| 35742 | 2114 |
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2115 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2116 if (!expr1) |
| 2117 return NULL; | |
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2118 if(!set_context(c, expr1, Store, ch)) |
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2119 return NULL; |
| 35742 | 2120 |
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2121 ch = CHILD(n, 2); |
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2122 if (TYPE(ch) == testlist) |
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2123 expr2 = ast_for_testlist(c, ch); |
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2124 else |
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2125 expr2 = ast_for_expr(c, ch); |
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2126 if (!expr2) |
| 35742 | 2127 return NULL; |
| 2128 | |
|
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2129 newoperator = ast_for_augassign(c, CHILD(n, 1)); |
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2130 if (!newoperator) |
| 35742 | 2131 return NULL; |
| 2132 | |
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2133 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2134 } |
| 2135 else { | |
|
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2136 int i; |
|
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2137 asdl_seq *targets; |
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2138 node *value; |
| 35742 | 2139 expr_ty expression; |
| 2140 | |
|
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2141 /* a normal assignment */ |
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2142 REQ(CHILD(n, 1), EQUAL); |
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2143 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
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2144 if (!targets) |
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2145 return NULL; |
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2146 for (i = 0; i < NCH(n) - 2; i += 2) { |
|
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2147 expr_ty e; |
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2148 node *ch = CHILD(n, i); |
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2149 if (TYPE(ch) == yield_expr) { |
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2150 ast_error(ch, "assignment to yield expression not possible"); |
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2151 return NULL; |
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2152 } |
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2153 e = ast_for_testlist(c, ch); |
| 35742 | 2154 |
|
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2155 /* set context to assign */ |
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2156 if (!e) |
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2157 return NULL; |
| 35742 | 2158 |
|
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2159 if (!set_context(c, e, Store, CHILD(n, i))) |
|
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2160 return NULL; |
| 35742 | 2161 |
|
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2162 asdl_seq_SET(targets, i / 2, e); |
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2163 } |
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|
2164 value = CHILD(n, NCH(n) - 1); |
|
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2165 if (TYPE(value) == testlist_star_expr) |
|
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2166 expression = ast_for_testlist(c, value); |
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2167 else |
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|
2168 expression = ast_for_expr(c, value); |
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2169 if (!expression) |
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|
2170 return NULL; |
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2171 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2172 } |
| 2173 } | |
| 2174 | |
|
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2175 |
| 35742 | 2176 static asdl_seq * |
|
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|
2177 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2178 { |
| 2179 asdl_seq *seq; | |
| 2180 int i; | |
| 2181 expr_ty e; | |
| 2182 | |
| 2183 REQ(n, exprlist); | |
| 2184 | |
|
36065
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changeset
|
2185 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2186 if (!seq) |
|
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|
2187 return NULL; |
| 35742 | 2188 for (i = 0; i < NCH(n); i += 2) { |
|
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2189 e = ast_for_expr(c, CHILD(n, i)); |
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2190 if (!e) |
|
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2191 return NULL; |
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2192 asdl_seq_SET(seq, i / 2, e); |
|
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2193 if (context && !set_context(c, e, context, CHILD(n, i))) |
|
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2194 return NULL; |
| 35742 | 2195 } |
| 2196 return seq; | |
| 2197 } | |
| 2198 | |
| 2199 static stmt_ty | |
| 2200 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2201 { | |
| 2202 asdl_seq *expr_list; | |
| 2203 | |
| 2204 /* del_stmt: 'del' exprlist */ | |
| 2205 REQ(n, del_stmt); | |
| 2206 | |
| 2207 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2208 if (!expr_list) | |
| 2209 return NULL; | |
|
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|
2210 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2211 } |
| 2212 | |
| 2213 static stmt_ty | |
| 2214 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2215 { | |
| 2216 /* | |
| 2217 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2218 | yield_stmt | |
| 2219 break_stmt: 'break' | |
| 2220 continue_stmt: 'continue' | |
| 2221 return_stmt: 'return' [testlist] | |
| 2222 yield_stmt: yield_expr | |
| 2223 yield_expr: 'yield' testlist | |
| 2224 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2225 */ | |
| 2226 node *ch; | |
| 2227 | |
| 2228 REQ(n, flow_stmt); | |
| 2229 ch = CHILD(n, 0); | |
| 2230 switch (TYPE(ch)) { | |
| 2231 case break_stmt: | |
|
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2232 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2233 case continue_stmt: |
|
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|
2234 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2235 case yield_stmt: { /* will reduce to yield_expr */ |
|
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2236 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); |
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2237 if (!exp) |
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2238 return NULL; |
|
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2239 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2240 } |
| 2241 case return_stmt: | |
| 2242 if (NCH(ch) == 1) | |
|
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|
2243 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2244 else { |
|
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|
2245 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2246 if (!expression) |
| 2247 return NULL; | |
|
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|
2248 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2249 } |
| 2250 case raise_stmt: | |
| 2251 if (NCH(ch) == 1) | |
|
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|
2252 return Raise(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
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2253 else if (NCH(ch) >= 2) { |
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|
2254 expr_ty cause = NULL; |
| 35742 | 2255 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); |
| 2256 if (!expression) | |
| 2257 return NULL; | |
|
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|
2258 if (NCH(ch) == 4) { |
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|
2259 cause = ast_for_expr(c, CHILD(ch, 3)); |
|
981ecc526703
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|
2260 if (!cause) |
|
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|
2261 return NULL; |
|
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diff
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|
2262 } |
|
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|
2263 return Raise(expression, cause, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2264 } |
| 2265 default: | |
|
35870
f531c05cd240
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|
2266 PyErr_Format(PyExc_SystemError, |
| 35742 | 2267 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2268 return NULL; | |
| 2269 } | |
|
36072
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|
2270 |
|
de16a85c3b4c
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diff
changeset
|
2271 PyErr_SetString(PyExc_SystemError, "unhandled flow statement"); |
|
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2272 return NULL; |
| 35742 | 2273 } |
| 2274 | |
| 2275 static alias_ty | |
|
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|
2276 alias_for_import_name(struct compiling *c, const node *n, int store) |
| 35742 | 2277 { |
| 2278 /* | |
|
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|
2279 import_as_name: NAME ['as' NAME] |
|
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|
2280 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2281 dotted_name: NAME ('.' NAME)* |
| 2282 */ | |
|
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|
2283 identifier str, name; |
|
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|
2284 |
| 35742 | 2285 loop: |
| 2286 switch (TYPE(n)) { | |
|
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|
2287 case import_as_name: { |
|
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|
2288 node *name_node = CHILD(n, 0); |
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2289 str = NULL; |
|
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2290 name = NEW_IDENTIFIER(name_node); |
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2291 if (!name) |
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2292 return NULL; |
|
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2293 if (NCH(n) == 3) { |
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2294 node *str_node = CHILD(n, 2); |
|
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|
2295 str = NEW_IDENTIFIER(str_node); |
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2296 if (!str) |
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|
2297 return NULL; |
|
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|
2298 if (store && forbidden_name(str, str_node, 0)) |
|
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|
2299 return NULL; |
|
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2300 } |
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|
2301 else { |
|
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|
2302 if (forbidden_name(name, name_node, 0)) |
|
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|
2303 return NULL; |
|
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|
2304 } |
|
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|
2305 return alias(name, str, c->c_arena); |
|
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|
2306 } |
| 35742 | 2307 case dotted_as_name: |
| 2308 if (NCH(n) == 1) { | |
| 2309 n = CHILD(n, 0); | |
| 2310 goto loop; | |
| 2311 } | |
| 2312 else { | |
|
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|
2313 node *asname_node = CHILD(n, 2); |
|
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|
2314 alias_ty a = alias_for_import_name(c, CHILD(n, 0), 0); |
|
39610
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
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|
2315 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
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|
2316 return NULL; |
| 35742 | 2317 assert(!a->asname); |
|
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|
2318 a->asname = NEW_IDENTIFIER(asname_node); |
|
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|
2319 if (!a->asname) |
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|
2320 return NULL; |
|
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|
2321 if (forbidden_name(a->asname, asname_node, 0)) |
|
54918
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|
2322 return NULL; |
| 35742 | 2323 return a; |
| 2324 } | |
| 2325 break; | |
| 2326 case dotted_name: | |
|
49844
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|
2327 if (NCH(n) == 1) { |
|
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|
2328 node *name_node = CHILD(n, 0); |
|
0704f15b4682
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|
2329 name = NEW_IDENTIFIER(name_node); |
|
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|
2330 if (!name) |
|
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|
2331 return NULL; |
|
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parents:
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|
2332 if (store && forbidden_name(name, name_node, 0)) |
|
54918
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|
2333 return NULL; |
|
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|
2334 return alias(name, NULL, c->c_arena); |
|
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|
2335 } |
| 35742 | 2336 else { |
| 2337 /* 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
|
2338 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2339 size_t len; |
| 35742 | 2340 char *s; |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2341 PyObject *uni; |
| 35742 | 2342 |
| 2343 len = 0; | |
| 2344 for (i = 0; i < NCH(n); i += 2) | |
| 2345 /* length of string plus one for the dot */ | |
| 2346 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2347 len--; /* the last name doesn't have a dot */ | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2348 str = PyBytes_FromStringAndSize(NULL, len); |
| 35742 | 2349 if (!str) |
| 2350 return NULL; | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2351 s = PyBytes_AS_STRING(str); |
| 35742 | 2352 if (!s) |
| 2353 return NULL; | |
| 2354 for (i = 0; i < NCH(n); i += 2) { | |
| 2355 char *sch = STR(CHILD(n, i)); | |
| 2356 strcpy(s, STR(CHILD(n, i))); | |
| 2357 s += strlen(sch); | |
| 2358 *s++ = '.'; | |
| 2359 } | |
| 2360 --s; | |
| 2361 *s = '\0'; | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
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diff
changeset
|
2362 uni = PyUnicode_DecodeUTF8(PyBytes_AS_STRING(str), |
|
23ab586c427a
Renamed PyString to PyBytes
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parents:
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diff
changeset
|
2363 PyBytes_GET_SIZE(str), |
|
42013
cd125fe83051
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|
2364 NULL); |
|
cd125fe83051
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diff
changeset
|
2365 Py_DECREF(str); |
|
cd125fe83051
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diff
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|
2366 if (!uni) |
|
cd125fe83051
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|
2367 return NULL; |
|
cd125fe83051
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changeset
|
2368 str = uni; |
|
cd125fe83051
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diff
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|
2369 PyUnicode_InternInPlace(&str); |
|
40450
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parents:
40215
diff
changeset
|
2370 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
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parents:
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changeset
|
2371 return alias(str, NULL, c->c_arena); |
| 35742 | 2372 } |
| 2373 break; | |
| 2374 case STAR: | |
|
42013
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diff
changeset
|
2375 str = PyUnicode_InternFromString("*"); |
|
40450
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diff
changeset
|
2376 PyArena_AddPyObject(c->c_arena, str); |
|
36065
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parents:
36001
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changeset
|
2377 return alias(str, NULL, c->c_arena); |
| 35742 | 2378 default: |
|
35870
f531c05cd240
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parents:
35868
diff
changeset
|
2379 PyErr_Format(PyExc_SystemError, |
| 35742 | 2380 "unexpected import name: %d", TYPE(n)); |
| 2381 return NULL; | |
| 2382 } | |
|
36072
de16a85c3b4c
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|
2383 |
|
de16a85c3b4c
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changeset
|
2384 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2385 return NULL; |
| 2386 } | |
| 2387 | |
| 2388 static stmt_ty | |
| 2389 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2390 { | |
| 2391 /* | |
| 2392 import_stmt: import_name | import_from | |
| 2393 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
|
2394 import_from: 'from' (('.' | '...')* dotted_name | ('.' | '...')+) |
|
6c8c33a43a15
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parents:
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diff
changeset
|
2395 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2396 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2397 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2398 int col_offset; |
| 35742 | 2399 int i; |
| 2400 asdl_seq *aliases; | |
| 2401 | |
| 2402 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
|
2403 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2404 col_offset = n->n_col_offset; |
| 35742 | 2405 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2406 if (TYPE(n) == import_name) { |
| 35742 | 2407 n = CHILD(n, 1); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2408 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2409 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
|
2410 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2411 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2412 for (i = 0; i < NCH(n); i += 2) { |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2413 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2414 if (!import_alias) |
| 35742 | 2415 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2416 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2417 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2418 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2419 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2420 else if (TYPE(n) == import_from) { |
| 35742 | 2421 int n_children; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2422 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2423 alias_ty mod = NULL; |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2424 identifier modname = NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2425 |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2426 /* 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
|
2427 optional module name */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2428 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
|
2429 if (TYPE(CHILD(n, idx)) == dotted_name) { |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2430 mod = alias_for_import_name(c, CHILD(n, idx), 0); |
|
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2431 if (!mod) |
|
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2432 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2433 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2434 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2435 } 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
|
2436 /* 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
|
2437 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2438 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2439 } 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
|
2440 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2441 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2442 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2443 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2444 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
|
2445 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2446 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2447 /* from ... import * */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2448 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2449 n_children = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2450 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2451 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2452 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2453 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2454 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2455 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2456 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2457 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2458 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2459 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2460 if (n_children % 2 == 0) { |
| 35742 | 2461 ast_error(n, "trailing comma not allowed without" |
| 2462 " surrounding parentheses"); | |
| 2463 return NULL; | |
| 2464 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2465 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2466 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2467 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
|
2468 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2469 } |
| 35742 | 2470 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2471 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
|
2472 if (!aliases) |
| 35742 | 2473 return NULL; |
| 2474 | |
| 2475 /* 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
|
2476 if (TYPE(n) == STAR) { |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2477 alias_ty import_alias = alias_for_import_name(c, n, 1); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2478 if (!import_alias) |
| 35742 | 2479 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2480 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2481 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2482 else { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2483 for (i = 0; i < NCH(n); i += 2) { |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2484 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1); |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2485 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2486 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2487 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
|
2488 } |
| 35742 | 2489 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2490 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2491 modname = mod->name; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2492 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
|
2493 c->c_arena); |
| 35742 | 2494 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2495 PyErr_Format(PyExc_SystemError, |
| 35742 | 2496 "unknown import statement: starts with command '%s'", |
| 2497 STR(CHILD(n, 0))); | |
| 2498 return NULL; | |
| 2499 } | |
| 2500 | |
| 2501 static stmt_ty | |
| 2502 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2503 { | |
| 2504 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2505 identifier name; | |
| 2506 asdl_seq *s; | |
| 2507 int i; | |
| 2508 | |
| 2509 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
|
2510 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2511 if (!s) |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2512 return NULL; |
| 35742 | 2513 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
|
2514 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
|
2515 if (!name) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2516 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2517 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2518 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2519 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2520 } |
| 2521 | |
| 2522 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2523 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
|
2524 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2525 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2526 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2527 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2528 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2529 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2530 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2531 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
|
2532 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2533 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2534 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2535 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2536 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2537 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2538 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2539 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2540 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
|
2541 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2542 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2543 static stmt_ty |
| 35742 | 2544 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2545 { | |
| 2546 /* assert_stmt: 'assert' test [',' test] */ | |
| 2547 REQ(n, assert_stmt); | |
| 2548 if (NCH(n) == 2) { | |
| 2549 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2550 if (!expression) | |
| 2551 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2552 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2553 } |
| 2554 else if (NCH(n) == 4) { | |
| 2555 expr_ty expr1, expr2; | |
| 2556 | |
| 2557 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2558 if (!expr1) | |
| 2559 return NULL; | |
| 2560 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2561 if (!expr2) | |
| 2562 return NULL; | |
| 2563 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2564 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2565 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2566 PyErr_Format(PyExc_SystemError, |
| 35742 | 2567 "improper number of parts to 'assert' statement: %d", |
| 2568 NCH(n)); | |
| 2569 return NULL; | |
| 2570 } | |
| 2571 | |
| 2572 static asdl_seq * | |
| 2573 ast_for_suite(struct compiling *c, const node *n) | |
| 2574 { | |
| 2575 /* 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
|
2576 asdl_seq *seq; |
| 35742 | 2577 stmt_ty s; |
| 2578 int i, total, num, end, pos = 0; | |
| 2579 node *ch; | |
| 2580 | |
| 2581 REQ(n, suite); | |
| 2582 | |
| 2583 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
|
2584 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2585 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2586 return NULL; |
| 35742 | 2587 if (TYPE(CHILD(n, 0)) == simple_stmt) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2588 n = CHILD(n, 0); |
|
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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|
2589 /* 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
|
2590 and may have a trailing SEMI |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2591 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2592 end = NCH(n) - 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2593 if (TYPE(CHILD(n, end - 1)) == SEMI) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2594 end--; |
| 35742 | 2595 /* loop by 2 to skip semi-colons */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2596 for (i = 0; i < end; i += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2597 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2598 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2599 if (!s) |
|
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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|
2600 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2601 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2602 } |
| 35742 | 2603 } |
| 2604 else { | |
|
40450
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Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2605 for (i = 2; i < (NCH(n) - 1); i++) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2606 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2607 REQ(ch, stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2608 num = num_stmts(ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2609 if (num == 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2610 /* small_stmt or compound_stmt with only one child */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2611 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2612 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2613 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2614 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
|
2615 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2616 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2617 int j; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2618 ch = CHILD(ch, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2619 REQ(ch, simple_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2620 for (j = 0; j < NCH(ch); j += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2621 /* statement terminates with a semi-colon ';' */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2622 if (NCH(CHILD(ch, j)) == 0) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2623 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2624 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2625 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2626 s = ast_for_stmt(c, CHILD(ch, j)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2627 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2628 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2629 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
|
2630 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2631 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2632 } |
| 35742 | 2633 } |
| 2634 assert(pos == seq->size); | |
| 2635 return seq; | |
| 2636 } | |
| 2637 | |
| 2638 static stmt_ty | |
| 2639 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2640 { | |
| 2641 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2642 ['else' ':' suite] | |
| 2643 */ | |
| 2644 char *s; | |
| 2645 | |
| 2646 REQ(n, if_stmt); | |
| 2647 | |
| 2648 if (NCH(n) == 4) { | |
| 2649 expr_ty expression; | |
| 2650 asdl_seq *suite_seq; | |
| 2651 | |
| 2652 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2653 if (!expression) | |
| 2654 return NULL; | |
| 2655 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2656 if (!suite_seq) |
| 35742 | 2657 return NULL; |
| 2658 | |
|
41554
06145fbc7ab9
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Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2659 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
2660 c->c_arena); |
| 35742 | 2661 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2662 |
| 35742 | 2663 s = STR(CHILD(n, 4)); |
| 2664 /* s[2], the third character in the string, will be | |
| 2665 's' for el_s_e, or | |
| 2666 'i' for el_i_f | |
| 2667 */ | |
| 2668 if (s[2] == 's') { | |
| 2669 expr_ty expression; | |
| 2670 asdl_seq *seq1, *seq2; | |
| 2671 | |
| 2672 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2673 if (!expression) | |
| 2674 return NULL; | |
| 2675 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2676 if (!seq1) |
| 35742 | 2677 return NULL; |
| 2678 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2679 if (!seq2) |
| 35742 | 2680 return NULL; |
| 2681 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
2682 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
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parents:
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diff
changeset
|
2683 c->c_arena); |
| 35742 | 2684 } |
| 2685 else if (s[2] == 'i') { | |
|
40450
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Four months of trunk changes (including a few releases...)
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changeset
|
2686 int i, n_elif, has_else = 0; |
|
41554
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|
2687 expr_ty expression; |
|
06145fbc7ab9
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|
2688 asdl_seq *suite_seq; |
|
40450
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diff
changeset
|
2689 asdl_seq *orelse = NULL; |
|
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40215
diff
changeset
|
2690 n_elif = NCH(n) - 4; |
| 35742 | 2691 /* must reference the child n_elif+1 since 'else' token is third, |
| 2692 not fourth, child from the end. */ | |
|
40450
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diff
changeset
|
2693 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
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changeset
|
2694 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
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diff
changeset
|
2695 has_else = 1; |
|
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diff
changeset
|
2696 n_elif -= 3; |
|
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diff
changeset
|
2697 } |
|
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diff
changeset
|
2698 n_elif /= 4; |
| 35742 | 2699 |
|
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changeset
|
2700 if (has_else) { |
|
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changeset
|
2701 asdl_seq *suite_seq2; |
| 35742 | 2702 |
|
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changeset
|
2703 orelse = asdl_seq_new(1, c->c_arena); |
|
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changeset
|
2704 if (!orelse) |
|
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diff
changeset
|
2705 return NULL; |
| 35742 | 2706 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
36072
de16a85c3b4c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2707 if (!expression) |
| 35742 | 2708 return NULL; |
|
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changeset
|
2709 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
06145fbc7ab9
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changeset
|
2710 if (!suite_seq) |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2711 return NULL; |
|
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changeset
|
2712 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
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changeset
|
2713 if (!suite_seq2) |
| 35742 | 2714 return NULL; |
| 2715 | |
|
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changeset
|
2716 asdl_seq_SET(orelse, 0, |
|
06145fbc7ab9
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changeset
|
2717 If(expression, suite_seq, suite_seq2, |
|
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changeset
|
2718 LINENO(CHILD(n, NCH(n) - 6)), |
|
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changeset
|
2719 CHILD(n, NCH(n) - 6)->n_col_offset, |
|
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|
2720 c->c_arena)); |
|
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|
2721 /* the just-created orelse handled the last elif */ |
|
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|
2722 n_elif--; |
|
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|
2723 } |
| 35742 | 2724 |
|
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|
2725 for (i = 0; i < n_elif; i++) { |
|
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diff
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|
2726 int off = 5 + (n_elif - i - 1) * 4; |
|
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|
2727 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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|
2728 if (!newobj) |
|
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|
2729 return NULL; |
| 35742 | 2730 expression = ast_for_expr(c, CHILD(n, off)); |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2731 if (!expression) |
| 35742 | 2732 return NULL; |
| 2733 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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|
2734 if (!suite_seq) |
| 35742 | 2735 return NULL; |
| 2736 | |
|
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|
2737 asdl_seq_SET(newobj, 0, |
|
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|
2738 If(expression, suite_seq, orelse, |
|
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|
2739 LINENO(CHILD(n, off)), |
|
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|
2740 CHILD(n, off)->n_col_offset, c->c_arena)); |
|
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|
2741 orelse = newobj; |
|
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|
2742 } |
|
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|
2743 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
2744 if (!expression) |
|
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|
2745 return NULL; |
|
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|
2746 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
|
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|
2747 if (!suite_seq) |
|
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|
2748 return NULL; |
|
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|
2749 return If(expression, suite_seq, orelse, |
|
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|
2750 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2751 } |
|
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|
2752 |
|
de16a85c3b4c
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|
2753 PyErr_Format(PyExc_SystemError, |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
2754 "unexpected token in 'if' statement: %s", s); |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
2755 return NULL; |
| 35742 | 2756 } |
| 2757 | |
| 2758 static stmt_ty | |
| 2759 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2760 { | |
| 2761 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2762 REQ(n, while_stmt); | |
| 2763 | |
| 2764 if (NCH(n) == 4) { | |
| 2765 expr_ty expression; | |
| 2766 asdl_seq *suite_seq; | |
| 2767 | |
| 2768 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2769 if (!expression) | |
| 2770 return NULL; | |
| 2771 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2772 if (!suite_seq) |
| 35742 | 2773 return NULL; |
|
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|
2774 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2775 } |
| 2776 else if (NCH(n) == 7) { | |
| 2777 expr_ty expression; | |
| 2778 asdl_seq *seq1, *seq2; | |
| 2779 | |
| 2780 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2781 if (!expression) | |
| 2782 return NULL; | |
| 2783 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2784 if (!seq1) |
| 35742 | 2785 return NULL; |
| 2786 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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parents:
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|
2787 if (!seq2) |
| 35742 | 2788 return NULL; |
| 2789 | |
|
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|
2790 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2791 } |
|
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|
2792 |
|
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changeset
|
2793 PyErr_Format(PyExc_SystemError, |
|
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|
2794 "wrong number of tokens for 'while' statement: %d", |
|
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|
2795 NCH(n)); |
|
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|
2796 return NULL; |
| 35742 | 2797 } |
| 2798 | |
| 2799 static stmt_ty | |
| 2800 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2801 { | |
|
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|
2802 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2803 expr_ty expression; |
|
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|
2804 expr_ty target, first; |
|
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|
2805 const node *node_target; |
| 35742 | 2806 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2807 REQ(n, for_stmt); | |
| 2808 | |
| 2809 if (NCH(n) == 9) { | |
|
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|
2810 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2811 if (!seq) |
| 2812 return NULL; | |
| 2813 } | |
| 2814 | |
|
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|
2815 node_target = CHILD(n, 1); |
|
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|
2816 _target = ast_for_exprlist(c, node_target, Store); |
|
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|
2817 if (!_target) |
| 35742 | 2818 return NULL; |
|
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|
2819 /* Check the # of children rather than the length of _target, since |
|
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|
2820 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2821 first = (expr_ty)asdl_seq_GET(_target, 0); |
|
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|
2822 if (NCH(node_target) == 1) |
|
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|
2823 target = first; |
| 35742 | 2824 else |
|
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|
2825 target = Tuple(_target, Store, first->lineno, first->col_offset, c->c_arena); |
| 35742 | 2826 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2827 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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parents:
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changeset
|
2828 if (!expression) |
| 35742 | 2829 return NULL; |
| 2830 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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parents:
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changeset
|
2831 if (!suite_seq) |
| 35742 | 2832 return NULL; |
| 2833 | |
|
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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changeset
|
2834 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2835 c->c_arena); |
| 35742 | 2836 } |
| 2837 | |
| 2838 static excepthandler_ty | |
| 2839 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2840 { | |
|
41824
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changeset
|
2841 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2842 REQ(exc, except_clause); |
| 2843 REQ(body, suite); | |
| 2844 | |
| 2845 if (NCH(exc) == 1) { | |
| 2846 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2847 if (!suite_seq) | |
| 2848 return NULL; | |
| 2849 | |
|
46231
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|
2850 return ExceptHandler(NULL, NULL, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
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parents:
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changeset
|
2851 exc->n_col_offset, c->c_arena); |
| 35742 | 2852 } |
| 2853 else if (NCH(exc) == 2) { | |
| 2854 expr_ty expression; | |
| 2855 asdl_seq *suite_seq; | |
| 2856 | |
| 2857 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2858 if (!expression) | |
| 2859 return NULL; | |
| 2860 suite_seq = ast_for_suite(c, body); | |
|
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diff
changeset
|
2861 if (!suite_seq) |
| 35742 | 2862 return NULL; |
| 2863 | |
|
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|
2864 return ExceptHandler(expression, NULL, suite_seq, LINENO(exc), |
|
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f731859e9b3b
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parents:
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changeset
|
2865 exc->n_col_offset, c->c_arena); |
| 35742 | 2866 } |
| 2867 else if (NCH(exc) == 4) { | |
| 2868 asdl_seq *suite_seq; | |
| 2869 expr_ty expression; | |
|
40588
4bab65fcca8e
Some more changes related to the new except syntax and semantics,
Guido van Rossum <guido@python.org>
parents:
40529
diff
changeset
|
2870 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
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|
2871 if (!e) |
| 35742 | 2872 return NULL; |
|
54954
c45e331238ae
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Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
2873 if (forbidden_name(e, CHILD(exc, 3), 0)) |
|
c45e331238ae
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Benjamin Peterson <benjamin@python.org>
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changeset
|
2874 return NULL; |
|
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diff
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|
2875 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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|
2876 if (!expression) |
|
de16a85c3b4c
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diff
changeset
|
2877 return NULL; |
| 35742 | 2878 suite_seq = ast_for_suite(c, body); |
|
36072
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changeset
|
2879 if (!suite_seq) |
| 35742 | 2880 return NULL; |
| 2881 | |
|
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|
2882 return ExceptHandler(expression, e, suite_seq, LINENO(exc), |
|
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f731859e9b3b
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Thomas Wouters <thomas@python.org>
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changeset
|
2883 exc->n_col_offset, c->c_arena); |
| 35742 | 2884 } |
|
36072
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|
2885 |
|
de16a85c3b4c
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diff
changeset
|
2886 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
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parents:
36066
diff
changeset
|
2887 "wrong number of children for 'except' clause: %d", |
|
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diff
changeset
|
2888 NCH(exc)); |
|
de16a85c3b4c
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diff
changeset
|
2889 return NULL; |
| 35742 | 2890 } |
| 2891 | |
| 2892 static stmt_ty | |
| 2893 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2894 { | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2895 const int nch = NCH(n); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2896 int n_except = (nch - 3)/3; |
|
719ba02d2e2c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2897 asdl_seq *body, *orelse = NULL, *finally = NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2898 |
| 35742 | 2899 REQ(n, try_stmt); |
| 2900 | |
|
36066
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2901 body = ast_for_suite(c, CHILD(n, 2)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2902 if (body == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2903 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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parents:
36065
diff
changeset
|
2904 |
|
719ba02d2e2c
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parents:
36065
diff
changeset
|
2905 if (TYPE(CHILD(n, nch - 3)) == NAME) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2906 if (strcmp(STR(CHILD(n, nch - 3)), "finally") == 0) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2907 if (nch >= 9 && TYPE(CHILD(n, nch - 6)) == NAME) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2908 /* we can assume it's an "else", |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2909 because nch >= 9 for try-else-finally and |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2910 it would otherwise have a type of except_clause */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2911 orelse = ast_for_suite(c, CHILD(n, nch - 4)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2912 if (orelse == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2913 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2914 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2915 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2916 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2917 finally = ast_for_suite(c, CHILD(n, nch - 1)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2918 if (finally == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2919 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2920 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2921 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2922 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2923 /* we can assume it's an "else", |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2924 otherwise it would have a type of except_clause */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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parents:
36065
diff
changeset
|
2925 orelse = ast_for_suite(c, CHILD(n, nch - 1)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2926 if (orelse == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2927 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2928 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2929 } |
| 35742 | 2930 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2931 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
|
2932 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2933 return NULL; |
| 2934 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2935 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2936 if (n_except > 0) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2937 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2938 stmt_ty except_st; |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2939 /* process except statements to create a try ... except */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2940 asdl_seq *handlers = asdl_seq_new(n_except, c->c_arena); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2941 if (handlers == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2942 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2943 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2944 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
|
2945 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
|
2946 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
|
2947 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2948 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2949 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
|
2950 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2951 |
|
40450
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parents:
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diff
changeset
|
2952 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
|
2953 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
|
2954 if (!finally) |
|
40450
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Four months of trunk changes (including a few releases...)
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parents:
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changeset
|
2955 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
|
2956 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2957 /* 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
|
2958 TryFinally to emulate try ... except ... finally */ |
|
40450
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Four months of trunk changes (including a few releases...)
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parents:
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|
2959 body = asdl_seq_new(1, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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changeset
|
2960 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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changeset
|
2961 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2962 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
|
2963 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2964 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2965 /* 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
|
2966 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
|
2967 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2968 } |
| 2969 | |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2970 /* with_item: test ['as' expr] */ |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2971 static stmt_ty |
|
54338
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diff
changeset
|
2972 ast_for_with_item(struct compiling *c, const node *n, asdl_seq *content) |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2973 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2974 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2975 |
|
54338
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diff
changeset
|
2976 REQ(n, with_item); |
|
287ce30d08b5
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Georg Brandl <georg@python.org>
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diff
changeset
|
2977 context_expr = ast_for_expr(c, CHILD(n, 0)); |
|
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diff
changeset
|
2978 if (NCH(n) == 3) { |
|
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parents:
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diff
changeset
|
2979 optional_vars = ast_for_expr(c, CHILD(n, 2)); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2980 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2981 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2982 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2983 } |
|
46664
031dfe455585
Merged revisions 62425-62429,62434-62436,62441,62444,62446-62448,62450-62455,62463,62465-62466,62469,62474,62476-62478,62480,62485,62492,62497-62498,62500,62507,62513-62514,62516,62521,62531,62535,62545-62546,62548-62551,62553-62559,62569,62574,62577,62593,62595,62604-62606,62608,62616,62626-62627,62636,62638,62644-62645,62647-62648,62651-62653,62656,62661,62663,62680,62686-62687,62696,62699-62703,62711 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
46306
diff
changeset
|
2984 if (!set_context(c, optional_vars, Store, n)) { |
|
40450
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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changeset
|
2985 return NULL; |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2986 } |
|
36695
b6d2f6fd3e11
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Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2987 } |
|
b6d2f6fd3e11
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
2988 |
|
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changeset
|
2989 return With(context_expr, optional_vars, content, LINENO(n), |
|
287ce30d08b5
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|
2990 n->n_col_offset, c->c_arena); |
|
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|
2991 } |
|
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diff
changeset
|
2992 |
|
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diff
changeset
|
2993 /* with_stmt: 'with' with_item (',' with_item)* ':' suite */ |
|
287ce30d08b5
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53707
diff
changeset
|
2994 static stmt_ty |
|
287ce30d08b5
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changeset
|
2995 ast_for_with_stmt(struct compiling *c, const node *n) |
|
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|
2996 { |
|
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changeset
|
2997 int i; |
|
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diff
changeset
|
2998 stmt_ty ret; |
|
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diff
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|
2999 asdl_seq *inner; |
|
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|
3000 |
|
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changeset
|
3001 REQ(n, with_stmt); |
|
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changeset
|
3002 |
|
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changeset
|
3003 /* process the with items inside-out */ |
|
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changeset
|
3004 i = NCH(n) - 1; |
|
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diff
changeset
|
3005 /* the suite of the innermost with item is the suite of the with stmt */ |
|
287ce30d08b5
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changeset
|
3006 inner = ast_for_suite(c, CHILD(n, i)); |
|
287ce30d08b5
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parents:
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diff
changeset
|
3007 if (!inner) |
|
36695
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Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3008 return NULL; |
|
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|
3009 |
|
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changeset
|
3010 for (;;) { |
|
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Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
3011 i -= 2; |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
3012 ret = ast_for_with_item(c, CHILD(n, i), inner); |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
3013 if (!ret) |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
3014 return NULL; |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
3015 /* was this the last item? */ |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
3016 if (i == 1) |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
3017 break; |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
3018 /* if not, wrap the result so far in a new sequence */ |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
3019 inner = asdl_seq_new(1, c->c_arena); |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
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parents:
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diff
changeset
|
3020 if (!inner) |
|
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Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
3021 return NULL; |
|
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Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
3022 asdl_seq_SET(inner, 0, ret); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3023 } |
|
54338
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parents:
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diff
changeset
|
3024 |
|
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Merged revisions 72924 via svnmerge from
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parents:
53707
diff
changeset
|
3025 return ret; |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3026 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3027 |
| 35742 | 3028 static stmt_ty |
|
41824
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parents:
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|
3029 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 3030 { |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3031 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
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parents:
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changeset
|
3032 PyObject *classname; |
|
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19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3033 asdl_seq *s; |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3034 expr_ty call; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3035 |
| 35742 | 3036 REQ(n, classdef); |
| 3037 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3038 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 3039 s = ast_for_suite(c, CHILD(n, 3)); |
| 3040 if (!s) | |
| 3041 return NULL; | |
|
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|
3042 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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parents:
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|
3043 if (!classname) |
|
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Benjamin Peterson <benjamin@python.org>
parents:
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changeset
|
3044 return NULL; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3045 if (forbidden_name(classname, CHILD(n, 3), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
3046 return NULL; |
|
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|
3047 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
|
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changeset
|
3048 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3049 } |
|
41226
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parents:
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diff
changeset
|
3050 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3051 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:
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diff
changeset
|
3052 s = ast_for_suite(c, CHILD(n,5)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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|
3053 if (!s) |
|
49844
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|
3054 return NULL; |
|
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parents:
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changeset
|
3055 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
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|
3056 if (!classname) |
|
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parents:
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changeset
|
3057 return NULL; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3058 if (forbidden_name(classname, CHILD(n, 3), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3059 return NULL; |
|
49844
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parents:
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|
3060 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
|
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parents:
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changeset
|
3061 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3062 } |
| 3063 | |
|
41226
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Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3064 /* class NAME '(' arglist ')' ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3065 /* build up a fake Call node so we can extract its pieces */ |
|
49852
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check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
3066 { |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3067 PyObject *dummy_name; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3068 expr_ty dummy; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3069 dummy_name = NEW_IDENTIFIER(CHILD(n, 1)); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3070 if (!dummy_name) |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3071 return NULL; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3072 dummy = Name(dummy_name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
3073 call = ast_for_call(c, CHILD(n, 3), dummy); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3074 if (!call) |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3075 return NULL; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3076 } |
| 35742 | 3077 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
|
3078 if (!s) |
| 35742 | 3079 return NULL; |
|
49844
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Benjamin Peterson <benjamin@python.org>
parents:
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changeset
|
3080 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
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parents:
49797
diff
changeset
|
3081 if (!classname) |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
3082 return NULL; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3083 if (forbidden_name(classname, CHILD(n, 1), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3084 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3085 |
|
49844
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parents:
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changeset
|
3086 return ClassDef(classname, call->v.Call.args, call->v.Call.keywords, |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3087 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
41824
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3088 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3089 } |
| 3090 | |
| 3091 static stmt_ty | |
| 3092 ast_for_stmt(struct compiling *c, const node *n) | |
| 3093 { | |
| 3094 if (TYPE(n) == stmt) { | |
|
40450
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3095 assert(NCH(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3096 n = CHILD(n, 0); |
| 35742 | 3097 } |
| 3098 if (TYPE(n) == simple_stmt) { | |
|
40450
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Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
3099 assert(num_stmts(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3100 n = CHILD(n, 0); |
| 35742 | 3101 } |
| 3102 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
3103 n = CHILD(n, 0); |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3104 /* 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
|
3105 | import_stmt | global_stmt | nonlocal_stmt | assert_stmt |
|
40450
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parents:
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diff
changeset
|
3106 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3107 switch (TYPE(n)) { |
| 35742 | 3108 case expr_stmt: |
| 3109 return ast_for_expr_stmt(c, n); | |
| 3110 case del_stmt: | |
| 3111 return ast_for_del_stmt(c, n); | |
| 3112 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
|
3113 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3114 case flow_stmt: |
| 3115 return ast_for_flow_stmt(c, n); | |
| 3116 case import_stmt: | |
| 3117 return ast_for_import_stmt(c, n); | |
| 3118 case global_stmt: | |
| 3119 return ast_for_global_stmt(c, n); | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3120 case nonlocal_stmt: |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3121 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3122 case assert_stmt: |
| 3123 return ast_for_assert_stmt(c, n); | |
| 3124 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3125 PyErr_Format(PyExc_SystemError, |
| 35742 | 3126 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3127 TYPE(n), NCH(n)); | |
| 3128 return NULL; | |
| 3129 } | |
| 3130 } | |
| 3131 else { | |
| 3132 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
41824
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Guido van Rossum <guido@python.org>
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41717
diff
changeset
|
3133 | funcdef | classdef | decorated |
|
40450
cc992d75d5b3
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parents:
40215
diff
changeset
|
3134 */ |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3135 node *ch = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3136 REQ(n, compound_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3137 switch (TYPE(ch)) { |
| 35742 | 3138 case if_stmt: |
| 3139 return ast_for_if_stmt(c, ch); | |
| 3140 case while_stmt: | |
| 3141 return ast_for_while_stmt(c, ch); | |
| 3142 case for_stmt: | |
| 3143 return ast_for_for_stmt(c, ch); | |
| 3144 case try_stmt: | |
| 3145 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3146 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3147 return ast_for_with_stmt(c, ch); |
| 35742 | 3148 case funcdef: |
|
41824
24b60622b944
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Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3149 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3150 case classdef: |
|
41824
24b60622b944
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Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3151 return ast_for_classdef(c, ch, NULL); |
|
24b60622b944
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Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3152 case decorated: |
|
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3153 return ast_for_decorated(c, ch); |
| 35742 | 3154 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3155 PyErr_Format(PyExc_SystemError, |
| 35742 | 3156 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3157 TYPE(n), NCH(n)); | |
| 3158 return NULL; | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3159 } |
| 35742 | 3160 } |
| 3161 } | |
| 3162 | |
| 3163 static PyObject * | |
|
46664
031dfe455585
Merged revisions 62425-62429,62434-62436,62441,62444,62446-62448,62450-62455,62463,62465-62466,62469,62474,62476-62478,62480,62485,62492,62497-62498,62500,62507,62513-62514,62516,62521,62531,62535,62545-62546,62548-62551,62553-62559,62569,62574,62577,62593,62595,62604-62606,62608,62616,62626-62627,62636,62638,62644-62645,62647-62648,62651-62653,62656,62661,62663,62680,62686-62687,62696,62699-62703,62711 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
46306
diff
changeset
|
3164 parsenumber(struct compiling *c, const char *s) |
| 35742 | 3165 { |
|
41554
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|
3166 const char *end; |
|
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|
3167 long x; |
|
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|
3168 double dx; |
| 35742 | 3169 #ifndef WITHOUT_COMPLEX |
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|
3170 Py_complex compl; |
|
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3171 int imflag; |
| 35742 | 3172 #endif |
| 3173 | |
|
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3174 assert(s != NULL); |
|
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3175 errno = 0; |
|
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3176 end = s + strlen(s) - 1; |
| 35742 | 3177 #ifndef WITHOUT_COMPLEX |
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3178 imflag = *end == 'j' || *end == 'J'; |
| 35742 | 3179 #endif |
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3180 if (s[0] == '0') { |
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3181 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
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3182 if (x < 0 && errno == 0) { |
|
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3183 return PyLong_FromString((char *)s, |
|
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3184 (char **)0, |
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3185 0); |
|
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3186 } |
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3187 } |
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3188 else |
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3189 x = PyOS_strtol((char *)s, (char **)&end, 0); |
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3190 if (*end == '\0') { |
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3191 if (errno != 0) |
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3192 return PyLong_FromString((char *)s, (char **)0, 0); |
|
44099
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3193 return PyLong_FromLong(x); |
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3194 } |
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3195 /* XXX Huge floats may silently fail */ |
| 35742 | 3196 #ifndef WITHOUT_COMPLEX |
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3197 if (imflag) { |
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|
3198 compl.real = 0.; |
|
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3199 compl.imag = PyOS_string_to_double(s, (char **)&end, NULL); |
|
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|
3200 if (compl.imag == -1.0 && PyErr_Occurred()) |
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|
3201 return NULL; |
|
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3202 return PyComplex_FromCComplex(compl); |
|
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3203 } |
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3204 else |
| 35742 | 3205 #endif |
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3206 { |
|
53707
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|
3207 dx = PyOS_string_to_double(s, NULL, NULL); |
|
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|
3208 if (dx == -1.0 && PyErr_Occurred()) |
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|
3209 return NULL; |
|
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3210 return PyFloat_FromDouble(dx); |
|
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3211 } |
| 35742 | 3212 } |
| 3213 | |
| 3214 static PyObject * | |
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3215 decode_utf8(struct compiling *c, const char **sPtr, const char *end, char* encoding) |
| 35742 | 3216 { |
|
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3217 PyObject *u, *v; |
|
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3218 char *s, *t; |
|
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3219 t = s = (char *)*sPtr; |
|
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3220 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
|
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3221 while (s < end && (*s & 0x80)) s++; |
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3222 *sPtr = s; |
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3223 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
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3224 if (u == NULL) |
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3225 return NULL; |
|
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|
3226 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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|
3227 Py_DECREF(u); |
|
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3228 return v; |
| 35742 | 3229 } |
| 3230 | |
| 3231 static PyObject * | |
|
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3232 decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, const char *encoding) |
| 35742 | 3233 { |
|
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3234 PyObject *v, *u; |
|
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|
3235 char *buf; |
|
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|
3236 char *p; |
|
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|
3237 const char *end; |
|
43819
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|
3238 |
|
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|
3239 if (encoding == NULL) { |
|
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|
3240 buf = (char *)s; |
|
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|
3241 u = NULL; |
|
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|
3242 } else { |
|
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|
3243 /* check for integer overflow */ |
|
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3244 if (len > PY_SIZE_MAX / 4) |
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3245 return NULL; |
|
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3246 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ |
|
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3247 u = PyBytes_FromStringAndSize((char *)NULL, len * 4); |
|
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|
3248 if (u == NULL) |
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3249 return NULL; |
|
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|
3250 p = buf = PyBytes_AsString(u); |
|
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3251 end = s + len; |
|
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|
3252 while (s < end) { |
|
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|
3253 if (*s == '\\') { |
|
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|
3254 *p++ = *s++; |
|
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|
3255 if (*s & 0x80) { |
|
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|
3256 strcpy(p, "u005c"); |
|
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|
3257 p += 5; |
|
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|
3258 } |
|
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|
3259 } |
|
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|
3260 if (*s & 0x80) { /* XXX inefficient */ |
|
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|
3261 PyObject *w; |
|
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|
3262 char *r; |
|
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3263 Py_ssize_t rn, i; |
|
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|
3264 w = decode_utf8(c, &s, end, "utf-16-be"); |
|
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3265 if (w == NULL) { |
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|
3266 Py_DECREF(u); |
|
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3267 return NULL; |
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|
3268 } |
|
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|
3269 r = PyBytes_AS_STRING(w); |
|
44351
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|
3270 rn = Py_SIZE(w); |
|
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|
3271 assert(rn % 2 == 0); |
|
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|
3272 for (i = 0; i < rn; i += 2) { |
|
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|
3273 sprintf(p, "\\u%02x%02x", |
|
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|
3274 r[i + 0] & 0xFF, |
|
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|
3275 r[i + 1] & 0xFF); |
|
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3276 p += 6; |
|
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3277 } |
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|
3278 Py_DECREF(w); |
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3279 } else { |
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3280 *p++ = *s++; |
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3281 } |
|
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3282 } |
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3283 len = p - buf; |
|
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3284 s = buf; |
|
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3285 } |
|
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3286 if (rawmode) |
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3287 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
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3288 else |
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3289 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
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|
3290 Py_XDECREF(u); |
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3291 return v; |
| 35742 | 3292 } |
| 3293 | |
| 3294 /* s is a Python string literal, including the bracketing quote characters, | |
|
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|
3295 * and r &/or b prefixes (if any), and embedded escape sequences (if any). |
| 35742 | 3296 * parsestr parses it, and returns the decoded Python string object. |
| 3297 */ | |
| 3298 static PyObject * | |
|
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3299 parsestr(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3300 { |
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3301 size_t len; |
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3302 const char *s = STR(n); |
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3303 int quote = Py_CHARMASK(*s); |
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3304 int rawmode = 0; |
|
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3305 int need_encoding; |
|
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3306 if (isalpha(quote)) { |
|
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3307 if (quote == 'b' || quote == 'B') { |
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3308 quote = *++s; |
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3309 *bytesmode = 1; |
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3310 } |
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3311 if (quote == 'r' || quote == 'R') { |
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3312 quote = *++s; |
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3313 rawmode = 1; |
|
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3314 } |
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3315 } |
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3316 if (quote != '\'' && quote != '\"') { |
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3317 PyErr_BadInternalCall(); |
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3318 return NULL; |
|
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3319 } |
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3320 s++; |
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|
3321 len = strlen(s); |
|
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|
3322 if (len > INT_MAX) { |
|
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3323 PyErr_SetString(PyExc_OverflowError, |
|
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3324 "string to parse is too long"); |
|
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|
3325 return NULL; |
|
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3326 } |
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3327 if (s[--len] != quote) { |
|
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3328 PyErr_BadInternalCall(); |
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3329 return NULL; |
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3330 } |
|
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3331 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
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3332 s += 2; |
|
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3333 len -= 2; |
|
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3334 if (s[--len] != quote || s[--len] != quote) { |
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3335 PyErr_BadInternalCall(); |
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3336 return NULL; |
| 40894 | 3337 } |
|
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3338 } |
|
46306
b10292eafb07
Reverted r62128 on Guido's orders
Benjamin Peterson <benjamin@python.org>
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3339 if (!*bytesmode && !rawmode) { |
|
46664
031dfe455585
Merged revisions 62425-62429,62434-62436,62441,62444,62446-62448,62450-62455,62463,62465-62466,62469,62474,62476-62478,62480,62485,62492,62497-62498,62500,62507,62513-62514,62516,62521,62531,62535,62545-62546,62548-62551,62553-62559,62569,62574,62577,62593,62595,62604-62606,62608,62616,62626-62627,62636,62638,62644-62645,62647-62648,62651-62653,62656,62661,62663,62680,62686-62687,62696,62699-62703,62711 via svnmerge from
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3340 return decode_unicode(c, s, len, rawmode, c->c_encoding); |
|
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3341 } |
|
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3342 if (*bytesmode) { |
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|
3343 /* Disallow non-ascii characters (but not escapes) */ |
|
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|
3344 const char *c; |
|
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3345 for (c = s; *c; c++) { |
|
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3346 if (Py_CHARMASK(*c) >= 0x80) { |
|
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|
3347 ast_error(n, "bytes can only contain ASCII " |
|
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|
3348 "literal characters."); |
|
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|
3349 return NULL; |
|
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3350 } |
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3351 } |
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3352 } |
|
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3353 need_encoding = (!*bytesmode && c->c_encoding != NULL && |
|
49539
481ad3d9ffd1
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3354 strcmp(c->c_encoding, "utf-8") != 0); |
|
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3355 if (rawmode || strchr(s, '\\') == NULL) { |
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3356 if (need_encoding) { |
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|
3357 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
|
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|
3358 if (u == NULL || !*bytesmode) |
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3359 return u; |
|
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3360 v = PyUnicode_AsEncodedString(u, c->c_encoding, NULL); |
|
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3361 Py_DECREF(u); |
|
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3362 return v; |
|
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|
3363 } else if (*bytesmode) { |
|
47301
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3364 return PyBytes_FromStringAndSize(s, len); |
|
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3365 } else if (strcmp(c->c_encoding, "utf-8") == 0) { |
|
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|
3366 return PyUnicode_FromStringAndSize(s, len); |
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|
3367 } else { |
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|
3368 return PyUnicode_DecodeLatin1(s, len, NULL); |
|
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3369 } |
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3370 } |
|
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|
3371 return PyBytes_DecodeEscape(s, len, NULL, 1, |
|
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|
3372 need_encoding ? c->c_encoding : NULL); |
| 35742 | 3373 } |
| 3374 | |
|
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|
3375 /* Build a Python string object out of a STRING+ atom. This takes care of |
| 35742 | 3376 * compile-time literal catenation, calling parsestr() on each piece, and |
| 3377 * pasting the intermediate results together. | |
| 3378 */ | |
| 3379 static PyObject * | |
| 40894 | 3380 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3381 { |
|
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|
3382 PyObject *v; |
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|
3383 int i; |
|
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|
3384 REQ(CHILD(n, 0), STRING); |
|
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|
3385 v = parsestr(c, CHILD(n, 0), bytesmode); |
|
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3386 if (v != NULL) { |
|
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|
3387 /* String literal concatenation */ |
|
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|
3388 for (i = 1; i < NCH(n); i++) { |
|
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|
3389 PyObject *s; |
|
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3390 int subbm = 0; |
|
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3391 s = parsestr(c, CHILD(n, i), &subbm); |
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3392 if (s == NULL) |
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3393 goto onError; |
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3394 if (*bytesmode != subbm) { |
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43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
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3395 ast_error(n, "cannot mix bytes and nonbytes literals"); |
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3396 goto onError; |
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3397 } |
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47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
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3398 if (PyBytes_Check(v) && PyBytes_Check(s)) { |
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23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
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3399 PyBytes_ConcatAndDel(&v, s); |
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3400 if (v == NULL) |
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3401 goto onError; |
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3402 } |
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3403 else { |
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3404 PyObject *temp = PyUnicode_Concat(v, s); |
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3405 Py_DECREF(s); |
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3406 Py_DECREF(v); |
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3407 v = temp; |
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3408 if (v == NULL) |
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3409 goto onError; |
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3410 } |
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40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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3411 } |
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3412 } |
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3413 return v; |
| 35742 | 3414 |
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3415 onError: |
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3416 Py_XDECREF(v); |
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3417 return NULL; |
| 35742 | 3418 } |