Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 55729:d91aff206dfd 3.1
Merged revisions 74551 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k
........
r74551 | benjamin.peterson | 2009-08-26 09:35:45 +0200 (Wed, 26 Aug 2009) | 1 line
the old buffer object doesn't exist in Python 3 #6659
........
| author | Benjamin Peterson <benjamin@python.org> |
|---|---|
| date | Wed, 26 Aug 2009 07:38:00 +0000 |
| parents | 6370d71e3ca3 |
| children | 4f49bd2e7c58 0704f15b4682 |
| 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 "__debug__", |
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361 NULL, |
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362 }; |
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363 |
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364 static int |
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365 forbidden_name(expr_ty e, const node *n) |
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366 { |
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367 const char **p; |
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368 assert(PyUnicode_Check(e->v.Name.id)); |
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369 for (p = FORBIDDEN; *p; p++) { |
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370 if (PyUnicode_CompareWithASCIIString(e->v.Name.id, *p) == 0) { |
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371 ast_error(n, "assignment to keyword"); |
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372 return 1; |
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373 } |
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374 } |
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375 return 0; |
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376 } |
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377 |
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378 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 379 |
| 380 Only sets context for expr kinds that "can appear in assignment context" | |
| 381 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 382 an appropriate syntax error and returns false. | |
| 383 */ | |
| 384 | |
| 385 static int | |
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386 set_context(struct compiling *c, expr_ty e, expr_context_ty ctx, const node *n) |
| 35742 | 387 { |
| 388 asdl_seq *s = NULL; | |
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389 /* If a particular expression type can't be used for assign / delete, |
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390 set expr_name to its name and an error message will be generated. |
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391 */ |
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392 const char* expr_name = NULL; |
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393 |
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394 /* The ast defines augmented store and load contexts, but the |
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395 implementation here doesn't actually use them. The code may be |
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396 a little more complex than necessary as a result. It also means |
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397 that expressions in an augmented assignment have a Store context. |
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398 Consider restructuring so that augmented assignment uses |
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399 set_context(), too. |
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400 */ |
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401 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 402 |
| 403 switch (e->kind) { | |
| 404 case Attribute_kind: | |
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405 e->v.Attribute.ctx = ctx; |
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406 break; |
| 35742 | 407 case Subscript_kind: |
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408 e->v.Subscript.ctx = ctx; |
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409 break; |
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410 case Starred_kind: |
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411 e->v.Starred.ctx = ctx; |
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412 if (!set_context(c, e->v.Starred.value, ctx, n)) |
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413 return 0; |
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414 break; |
| 35742 | 415 case Name_kind: |
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416 if (ctx == Store) { |
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417 if (forbidden_name(e, n)) |
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418 return 0; /* forbidden_name() calls ast_error() */ |
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419 } |
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420 e->v.Name.ctx = ctx; |
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421 break; |
| 35742 | 422 case List_kind: |
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423 e->v.List.ctx = ctx; |
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424 s = e->v.List.elts; |
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425 break; |
| 35742 | 426 case Tuple_kind: |
| 427 if (asdl_seq_LEN(e->v.Tuple.elts) == 0) | |
| 428 return ast_error(n, "can't assign to ()"); | |
|
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429 e->v.Tuple.ctx = ctx; |
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430 s = e->v.Tuple.elts; |
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432 case Lambda_kind: |
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433 expr_name = "lambda"; |
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434 break; |
| 35742 | 435 case Call_kind: |
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436 expr_name = "function call"; |
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437 break; |
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438 case BoolOp_kind: |
| 35742 | 439 case BinOp_kind: |
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440 case UnaryOp_kind: |
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441 expr_name = "operator"; |
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442 break; |
| 35742 | 443 case GeneratorExp_kind: |
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444 expr_name = "generator expression"; |
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445 break; |
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446 case Yield_kind: |
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447 expr_name = "yield expression"; |
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448 break; |
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449 case ListComp_kind: |
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450 expr_name = "list comprehension"; |
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451 break; |
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452 case SetComp_kind: |
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453 expr_name = "set comprehension"; |
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454 break; |
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455 case DictComp_kind: |
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456 expr_name = "dict comprehension"; |
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458 case Dict_kind: |
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459 case Set_kind: |
| 35742 | 460 case Num_kind: |
| 461 case Str_kind: | |
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462 expr_name = "literal"; |
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463 break; |
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464 case Ellipsis_kind: |
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465 expr_name = "Ellipsis"; |
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466 break; |
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467 case Compare_kind: |
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468 expr_name = "comparison"; |
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469 break; |
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470 case IfExp_kind: |
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471 expr_name = "conditional expression"; |
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472 break; |
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473 default: |
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474 PyErr_Format(PyExc_SystemError, |
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475 "unexpected expression in assignment %d (line %d)", |
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476 e->kind, e->lineno); |
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477 return 0; |
| 35742 | 478 } |
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479 /* Check for error string set by switch */ |
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480 if (expr_name) { |
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481 char buf[300]; |
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482 PyOS_snprintf(buf, sizeof(buf), |
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483 "can't %s %s", |
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484 ctx == Store ? "assign to" : "delete", |
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485 expr_name); |
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486 return ast_error(n, buf); |
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487 } |
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488 |
| 35742 | 489 /* If the LHS is a list or tuple, we need to set the assignment |
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490 context for all the contained elements. |
| 35742 | 491 */ |
| 492 if (s) { | |
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493 int i; |
| 35742 | 494 |
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495 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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496 if (!set_context(c, (expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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497 return 0; |
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498 } |
| 35742 | 499 } |
| 500 return 1; | |
| 501 } | |
| 502 | |
| 503 static operator_ty | |
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504 ast_for_augassign(struct compiling *c, const node *n) |
| 35742 | 505 { |
| 506 REQ(n, augassign); | |
| 507 n = CHILD(n, 0); | |
| 508 switch (STR(n)[0]) { | |
| 509 case '+': | |
| 510 return Add; | |
| 511 case '-': | |
| 512 return Sub; | |
| 513 case '/': | |
| 514 if (STR(n)[1] == '/') | |
| 515 return FloorDiv; | |
| 516 else | |
| 517 return Div; | |
| 518 case '%': | |
| 519 return Mod; | |
| 520 case '<': | |
| 521 return LShift; | |
| 522 case '>': | |
| 523 return RShift; | |
| 524 case '&': | |
| 525 return BitAnd; | |
| 526 case '^': | |
| 527 return BitXor; | |
| 528 case '|': | |
| 529 return BitOr; | |
| 530 case '*': | |
| 531 if (STR(n)[1] == '*') | |
| 532 return Pow; | |
| 533 else | |
| 534 return Mult; | |
| 535 default: | |
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536 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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537 return (operator_ty)0; |
| 35742 | 538 } |
| 539 } | |
| 540 | |
| 541 static cmpop_ty | |
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542 ast_for_comp_op(struct compiling *c, const node *n) |
| 35742 | 543 { |
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544 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 545 |'is' 'not' |
| 546 */ | |
| 547 REQ(n, comp_op); | |
| 548 if (NCH(n) == 1) { | |
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549 n = CHILD(n, 0); |
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550 switch (TYPE(n)) { |
| 35742 | 551 case LESS: |
| 552 return Lt; | |
| 553 case GREATER: | |
| 554 return Gt; | |
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555 case EQEQUAL: /* == */ |
| 35742 | 556 return Eq; |
| 557 case LESSEQUAL: | |
| 558 return LtE; | |
| 559 case GREATEREQUAL: | |
| 560 return GtE; | |
| 561 case NOTEQUAL: | |
| 562 return NotEq; | |
| 563 case NAME: | |
| 564 if (strcmp(STR(n), "in") == 0) | |
| 565 return In; | |
| 566 if (strcmp(STR(n), "is") == 0) | |
| 567 return Is; | |
| 568 default: | |
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569 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 570 STR(n)); |
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571 return (cmpop_ty)0; |
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572 } |
| 35742 | 573 } |
| 574 else if (NCH(n) == 2) { | |
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575 /* handle "not in" and "is not" */ |
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576 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 577 case NAME: |
| 578 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 579 return NotIn; | |
| 580 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 581 return IsNot; | |
| 582 default: | |
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583 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 584 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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585 return (cmpop_ty)0; |
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586 } |
| 35742 | 587 } |
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588 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 589 NCH(n)); |
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590 return (cmpop_ty)0; |
| 35742 | 591 } |
| 592 | |
| 593 static asdl_seq * | |
| 594 seq_for_testlist(struct compiling *c, const node *n) | |
| 595 { | |
| 596 /* testlist: test (',' test)* [','] */ | |
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597 asdl_seq *seq; |
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598 expr_ty expression; |
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599 int i; |
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600 assert(TYPE(n) == testlist || TYPE(n) == testlist_comp); |
| 35742 | 601 |
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602 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 603 if (!seq) |
| 604 return NULL; | |
| 605 | |
| 606 for (i = 0; i < NCH(n); i += 2) { | |
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607 assert(TYPE(CHILD(n, i)) == test || TYPE(CHILD(n, i)) == test_nocond); |
| 35742 | 608 |
| 609 expression = ast_for_expr(c, CHILD(n, i)); | |
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610 if (!expression) |
| 35742 | 611 return NULL; |
| 612 | |
| 613 assert(i / 2 < seq->size); | |
| 614 asdl_seq_SET(seq, i / 2, expression); | |
| 615 } | |
| 616 return seq; | |
| 617 } | |
| 618 | |
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619 static arg_ty |
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620 compiler_arg(struct compiling *c, const node *n) |
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621 { |
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622 identifier name; |
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623 expr_ty annotation = NULL; |
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624 node *ch; |
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625 |
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626 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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627 ch = CHILD(n, 0); |
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628 name = NEW_IDENTIFIER(ch); |
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629 if (!name) |
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630 return NULL; |
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631 |
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632 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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633 annotation = ast_for_expr(c, CHILD(n, 2)); |
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634 if (!annotation) |
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635 return NULL; |
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636 } |
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637 |
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638 return arg(name, annotation, c->c_arena); |
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639 #if 0 |
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640 result = Tuple(args, Store, LINENO(n), n->n_col_offset, c->c_arena); |
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641 if (!set_context(c, result, Store, n)) |
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642 return NULL; |
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643 return result; |
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644 #endif |
| 35742 | 645 } |
| 646 | |
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647 /* returns -1 if failed to handle keyword only arguments |
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648 returns new position to keep processing if successful |
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649 (',' tfpdef ['=' test])* |
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650 ^^^ |
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651 start pointing here |
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652 */ |
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653 static int |
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654 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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655 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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656 { |
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657 PyObject *argname; |
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658 node *ch; |
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659 expr_ty expression, annotation; |
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660 arg_ty arg; |
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661 int i = start; |
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662 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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663 |
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664 if (kwonlyargs == NULL) { |
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665 ast_error(CHILD(n, start), "named arguments must follow bare *"); |
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666 return -1; |
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667 } |
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668 assert(kwdefaults != NULL); |
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669 while (i < NCH(n)) { |
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670 ch = CHILD(n, i); |
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671 switch (TYPE(ch)) { |
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672 case vfpdef: |
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673 case tfpdef: |
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674 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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675 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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676 asdl_seq_SET(kwdefaults, j, expression); |
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677 i += 2; /* '=' and test */ |
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678 } |
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679 else { /* setting NULL if no default value exists */ |
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680 asdl_seq_SET(kwdefaults, j, NULL); |
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681 } |
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682 if (NCH(ch) == 3) { |
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683 /* ch is NAME ':' test */ |
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684 annotation = ast_for_expr(c, CHILD(ch, 2)); |
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685 if (!annotation) { |
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686 ast_error(ch, "expected expression"); |
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687 goto error; |
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688 } |
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689 } |
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690 else { |
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691 annotation = NULL; |
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692 } |
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693 ch = CHILD(ch, 0); |
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694 argname = NEW_IDENTIFIER(ch); |
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695 if (!argname) |
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696 goto error; |
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697 arg = arg(argname, annotation, c->c_arena); |
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698 if (!arg) |
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699 goto error; |
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700 asdl_seq_SET(kwonlyargs, j++, arg); |
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701 i += 2; /* the name and the comma */ |
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702 break; |
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703 case DOUBLESTAR: |
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704 return i; |
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705 default: |
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706 ast_error(ch, "unexpected node"); |
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707 goto error; |
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708 } |
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709 } |
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710 return i; |
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711 error: |
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712 return -1; |
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713 } |
| 35742 | 714 |
|
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715 /* Create AST for argument list. */ |
| 35742 | 716 |
| 717 static arguments_ty | |
| 718 ast_for_arguments(struct compiling *c, const node *n) | |
| 719 { | |
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720 /* This function handles both typedargslist (function definition) |
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721 and varargslist (lambda definition). |
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722 |
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
723 parameters: '(' [typedargslist] ')' |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
724 typedargslist: ((tfpdef ['=' test] ',')* |
|
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9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
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|
725 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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changeset
|
726 | '**' tfpdef) |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
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|
727 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
|
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|
728 tfpdef: NAME [':' test] |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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729 varargslist: ((vfpdef ['=' test] ',')* |
|
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Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
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|
730 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
731 | '**' vfpdef) |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
732 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
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Merged revisions 55328-55341 via svnmerge from
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changeset
|
733 vfpdef: NAME |
| 35742 | 734 */ |
|
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1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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|
735 int i, j, k, nposargs = 0, nkwonlyargs = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
736 int nposdefaults = 0, found_default = 0; |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
39783
diff
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|
737 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 738 identifier vararg = NULL, kwarg = NULL; |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
739 arg_ty arg; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
740 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 741 node *ch; |
| 742 | |
| 743 if (TYPE(n) == parameters) { | |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
744 if (NCH(n) == 2) /* () as argument list */ |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
745 return arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
746 NULL, c->c_arena); |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
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|
747 n = CHILD(n, 1); |
| 35742 | 748 } |
|
40529
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Neal Norwitz <nnorwitz@gmail.com>
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changeset
|
749 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 750 |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
751 /* 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
|
752 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
|
753 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:
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diff
changeset
|
754 */ |
| 35742 | 755 for (i = 0; i < NCH(n); i++) { |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
756 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
757 if (TYPE(ch) == STAR) { |
|
48515
dbc2b7ad0c22
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Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
758 /* skip star */ |
|
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|
759 i++; |
|
48515
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Fix uninitialized memory read for cases like def(f, *): pass
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parents:
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diff
changeset
|
760 if (i < NCH(n) && /* skip argument following star */ |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
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parents:
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|
761 (TYPE(CHILD(n, i)) == tfpdef || |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
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parents:
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diff
changeset
|
762 TYPE(CHILD(n, i)) == vfpdef)) { |
|
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Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
763 i++; |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
764 } |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
765 break; |
|
40215
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
766 } |
|
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parents:
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diff
changeset
|
767 if (TYPE(ch) == DOUBLESTAR) break; |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
768 if (TYPE(ch) == vfpdef || TYPE(ch) == tfpdef) nposargs++; |
|
40215
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Jiwon Seo's PEP 3102 implementation.
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parents:
39783
diff
changeset
|
769 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
770 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
771 /* count the number of keyword only args & |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
772 defaults for keyword only args */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
773 for ( ; i < NCH(n); ++i) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
774 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
775 if (TYPE(ch) == DOUBLESTAR) break; |
|
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changeset
|
776 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 777 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
778 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
|
779 if (!posargs && nposargs) |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
780 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
781 kwonlyargs = (nkwonlyargs ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
782 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
|
783 if (!kwonlyargs && nkwonlyargs) |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
784 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
785 posdefaults = (nposdefaults ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
786 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
|
787 if (!posdefaults && nposdefaults) |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
788 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
789 /* 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
|
790 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
|
791 - we have sequence data structure, but no dictionary */ |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
792 kwdefaults = (nkwonlyargs ? |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
793 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
|
794 if (!kwdefaults && nkwonlyargs) |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
795 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
796 |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
797 if (nposargs + nkwonlyargs > 255) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
798 ast_error(n, "more than 255 arguments"); |
|
54cd47788811
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Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
799 return NULL; |
|
40215
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
800 } |
| 35742 | 801 |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
802 /* tfpdef: NAME [':' test] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
803 vfpdef: NAME |
| 35742 | 804 */ |
| 805 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
806 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
|
807 k = 0; /* index for args */ |
| 35742 | 808 while (i < NCH(n)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
809 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
810 switch (TYPE(ch)) { |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
811 case tfpdef: |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
812 case vfpdef: |
| 35742 | 813 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 814 anything other than EQUAL or a comma? */ | |
| 815 /* XXX Should NCH(n) check be made a separate check? */ | |
| 816 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
|
817 expr_ty expression = ast_for_expr(c, CHILD(n, i + 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
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parents:
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diff
changeset
|
818 if (!expression) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
819 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
820 assert(posdefaults != NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
821 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 822 i += 2; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
823 found_default = 1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
824 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
825 else if (found_default) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
826 ast_error(n, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
827 "non-default argument follows default argument"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
828 goto error; |
| 35742 | 829 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
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|
830 arg = compiler_arg(c, ch); |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
831 if (!arg) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
832 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
833 asdl_seq_SET(posargs, k++, arg); |
| 35742 | 834 i += 2; /* the name and the comma */ |
| 835 break; | |
| 836 case STAR: | |
|
40215
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
837 if (i+1 >= NCH(n)) { |
|
44246
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
838 ast_error(CHILD(n, i), |
|
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
839 "named arguments must follow bare *"); |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
840 goto error; |
|
40215
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
841 } |
|
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9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
842 ch = CHILD(n, i+1); /* tfpdef or COMMA */ |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
843 if (TYPE(ch) == COMMA) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
844 int res = 0; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
845 i += 2; /* now follows keyword only arguments */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
846 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
847 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
848 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
849 i = res; /* res has new position to process */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
850 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
851 else { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
852 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
49844
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Merged revisions 67373 via svnmerge from
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parents:
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diff
changeset
|
853 if (!vararg) |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
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parents:
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diff
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|
854 return NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
855 if (NCH(ch) > 1) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
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|
856 /* there is an annotation on the vararg */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
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diff
changeset
|
857 varargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
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parents:
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|
858 } |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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|
859 i += 3; |
|
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changeset
|
860 if (i < NCH(n) && (TYPE(CHILD(n, i)) == tfpdef |
|
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|
861 || TYPE(CHILD(n, i)) == vfpdef)) { |
|
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1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
862 int res = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
863 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
864 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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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:
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diff
changeset
|
868 } |
| 35742 | 869 break; |
| 870 case DOUBLESTAR: | |
|
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9ad84070b22d
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|
871 ch = CHILD(n, i+1); /* tfpdef */ |
|
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parents:
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diff
changeset
|
872 assert(TYPE(ch) == tfpdef || TYPE(ch) == vfpdef); |
|
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parents:
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diff
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|
873 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
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parents:
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|
874 if (NCH(ch) > 1) { |
|
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parents:
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diff
changeset
|
875 /* there is an annotation on the kwarg */ |
|
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parents:
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diff
changeset
|
876 kwargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
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parents:
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diff
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|
877 } |
|
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|
878 if (!kwarg) |
|
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|
879 goto error; |
| 35742 | 880 i += 3; |
| 881 break; | |
| 882 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
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parents:
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diff
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|
883 PyErr_Format(PyExc_SystemError, |
| 35742 | 884 "unexpected node in varargslist: %d @ %d", |
| 885 TYPE(ch), i); | |
| 886 goto error; | |
|
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1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
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|
887 } |
| 35742 | 888 } |
|
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parents:
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|
889 return arguments(posargs, vararg, varargannotation, kwonlyargs, kwarg, |
|
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parents:
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diff
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|
890 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 891 error: |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
892 Py_XDECREF(vararg); |
|
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
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parents:
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diff
changeset
|
893 Py_XDECREF(kwarg); |
| 35742 | 894 return NULL; |
| 895 } | |
| 896 | |
| 897 static expr_ty | |
| 898 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 899 { | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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|
900 expr_ty e; |
|
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Cleanup a bit and make things more consistent.
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parents:
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diff
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|
901 identifier id; |
|
36786
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Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
902 int lineno, col_offset; |
| 35742 | 903 int i; |
| 904 | |
| 905 REQ(n, dotted_name); | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
906 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
907 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
908 col_offset = n->n_col_offset; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
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diff
changeset
|
909 |
| 35742 | 910 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 911 if (!id) | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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parents:
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diff
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|
912 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
913 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 914 if (!e) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
915 return NULL; |
| 35742 | 916 |
| 917 for (i = 2; i < NCH(n); i+=2) { | |
| 918 id = NEW_IDENTIFIER(CHILD(n, i)); | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
919 if (!id) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
920 return NULL; |
|
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
921 e = Attribute(e, id, Load, lineno, col_offset, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
922 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
923 return NULL; |
| 35742 | 924 } |
| 925 | |
| 926 return e; | |
| 927 } | |
| 928 | |
| 929 static expr_ty | |
| 930 ast_for_decorator(struct compiling *c, const node *n) | |
| 931 { | |
| 932 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 933 expr_ty d = NULL; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
934 expr_ty name_expr; |
| 35742 | 935 |
| 936 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
937 REQ(CHILD(n, 0), AT); |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
938 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 939 |
| 940 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 941 if (!name_expr) | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
942 return NULL; |
|
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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
|
943 |
| 35742 | 944 if (NCH(n) == 3) { /* No arguments */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
945 d = name_expr; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
946 name_expr = NULL; |
| 35742 | 947 } |
| 948 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:
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diff
changeset
|
949 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
|
950 n->n_col_offset, c->c_arena); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
951 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
952 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
953 name_expr = NULL; |
| 35742 | 954 } |
| 955 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
956 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
|
957 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
958 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
959 name_expr = NULL; |
| 35742 | 960 } |
| 961 | |
| 962 return d; | |
| 963 } | |
| 964 | |
| 965 static asdl_seq* | |
| 966 ast_for_decorators(struct compiling *c, const node *n) | |
| 967 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
968 asdl_seq* decorator_seq; |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
969 expr_ty d; |
| 35742 | 970 int i; |
| 971 | |
| 972 REQ(n, decorators); | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
973 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 974 if (!decorator_seq) |
| 975 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
976 |
| 35742 | 977 for (i = 0; i < NCH(n); i++) { |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
978 d = ast_for_decorator(c, CHILD(n, i)); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
979 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
980 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
981 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 982 } |
| 983 return decorator_seq; | |
| 984 } | |
| 985 | |
| 986 static stmt_ty | |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
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parents:
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diff
changeset
|
987 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 988 { |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
989 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
990 identifier name; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
991 arguments_ty args; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
992 asdl_seq *body; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
993 expr_ty returns = NULL; |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
994 int name_i = 1; |
| 35742 | 995 |
| 996 REQ(n, funcdef); | |
| 997 | |
| 998 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 999 if (!name) | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1000 return NULL; |
| 35742 | 1001 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 1002 if (!args) | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1003 return NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1004 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1005 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1006 if (!returns) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1007 return NULL; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1008 name_i += 2; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1009 } |
| 35742 | 1010 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 1011 if (!body) | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1012 return NULL; |
| 35742 | 1013 |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1014 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
|
37879
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|
1015 n->n_col_offset, c->c_arena); |
| 35742 | 1016 } |
| 1017 | |
|
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1018 static stmt_ty |
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1019 ast_for_decorated(struct compiling *c, const node *n) |
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1020 { |
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1021 /* decorated: decorators (classdef | funcdef) */ |
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1022 stmt_ty thing = NULL; |
|
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1023 asdl_seq *decorator_seq = NULL; |
|
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1024 |
|
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1025 REQ(n, decorated); |
|
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1026 |
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1027 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
|
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1028 if (!decorator_seq) |
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1029 return NULL; |
|
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1030 |
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1031 assert(TYPE(CHILD(n, 1)) == funcdef || |
|
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1032 TYPE(CHILD(n, 1)) == classdef); |
|
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1033 |
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1034 if (TYPE(CHILD(n, 1)) == funcdef) { |
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1035 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
|
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1036 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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1037 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
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1038 } |
|
45448
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Patch from Georg Brandl: Fix co_lineno of decorated function and class objects. If you see an error in test_inspect please delete all pyc files.
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1039 /* we count the decorators in when talking about the class' or |
|
f1b50aa5d5af
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|
1040 * function's line number */ |
|
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|
1041 if (thing) { |
|
f1b50aa5d5af
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|
1042 thing->lineno = LINENO(n); |
|
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|
1043 thing->col_offset = n->n_col_offset; |
|
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1044 } |
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1045 return thing; |
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1046 } |
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1047 |
| 35742 | 1048 static expr_ty |
| 1049 ast_for_lambdef(struct compiling *c, const node *n) | |
| 1050 { | |
|
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1051 /* lambdef: 'lambda' [varargslist] ':' test |
|
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1052 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1053 arguments_ty args; |
| 1054 expr_ty expression; | |
| 1055 | |
| 1056 if (NCH(n) == 3) { | |
|
40529
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1057 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
54cd47788811
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1058 NULL, c->c_arena); |
| 35742 | 1059 if (!args) |
| 1060 return NULL; | |
| 1061 expression = ast_for_expr(c, CHILD(n, 2)); | |
|
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1062 if (!expression) |
| 35742 | 1063 return NULL; |
| 1064 } | |
| 1065 else { | |
| 1066 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1067 if (!args) | |
| 1068 return NULL; | |
| 1069 expression = ast_for_expr(c, CHILD(n, 3)); | |
|
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1070 if (!expression) |
| 35742 | 1071 return NULL; |
| 1072 } | |
| 1073 | |
|
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Martin v. Löwis <martin@v.loewis.de>
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1074 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1075 } |
| 1076 | |
|
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1077 static expr_ty |
|
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1078 ast_for_ifexpr(struct compiling *c, const node *n) |
|
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1079 { |
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1080 /* test: or_test 'if' or_test 'else' test */ |
|
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1081 expr_ty expression, body, orelse; |
|
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1082 |
|
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1083 assert(NCH(n) == 5); |
|
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1084 body = ast_for_expr(c, CHILD(n, 0)); |
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1085 if (!body) |
|
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1086 return NULL; |
|
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1087 expression = ast_for_expr(c, CHILD(n, 2)); |
|
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1088 if (!expression) |
|
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1089 return NULL; |
|
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1090 orelse = ast_for_expr(c, CHILD(n, 4)); |
|
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1091 if (!orelse) |
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1092 return NULL; |
|
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1093 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
|
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|
1094 c->c_arena); |
|
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1095 } |
|
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|
1096 |
|
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1097 /* |
|
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|
1098 Count the number of 'for' loops in a comprehension. |
| 35742 | 1099 |
|
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1100 Helper for ast_for_comprehension(). |
| 35742 | 1101 */ |
| 1102 | |
| 1103 static int | |
|
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1104 count_comp_fors(struct compiling *c, const node *n) |
| 35742 | 1105 { |
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1106 int n_fors = 0; |
| 35742 | 1107 |
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1108 count_comp_for: |
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1109 n_fors++; |
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1110 REQ(n, comp_for); |
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1111 if (NCH(n) == 5) |
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1112 n = CHILD(n, 4); |
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1113 else |
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1114 return n_fors; |
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1115 count_comp_iter: |
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1116 REQ(n, comp_iter); |
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1117 n = CHILD(n, 0); |
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1118 if (TYPE(n) == comp_for) |
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1119 goto count_comp_for; |
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1120 else if (TYPE(n) == comp_if) { |
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1121 if (NCH(n) == 3) { |
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1122 n = CHILD(n, 2); |
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1123 goto count_comp_iter; |
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1124 } |
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1125 else |
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1126 return n_fors; |
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1127 } |
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1128 |
|
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1129 /* Should never be reached */ |
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1130 PyErr_SetString(PyExc_SystemError, |
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1131 "logic error in count_comp_fors"); |
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1132 return -1; |
| 35742 | 1133 } |
| 1134 | |
|
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1135 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1136 |
|
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1137 Helper for ast_for_comprehension(). |
| 35742 | 1138 */ |
| 1139 | |
| 1140 static int | |
|
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1141 count_comp_ifs(struct compiling *c, const node *n) |
| 35742 | 1142 { |
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1143 int n_ifs = 0; |
| 35742 | 1144 |
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1145 while (1) { |
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1146 REQ(n, comp_iter); |
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1147 if (TYPE(CHILD(n, 0)) == comp_for) |
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1148 return n_ifs; |
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1149 n = CHILD(n, 0); |
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1150 REQ(n, comp_if); |
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1151 n_ifs++; |
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1152 if (NCH(n) == 2) |
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1153 return n_ifs; |
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1154 n = CHILD(n, 2); |
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1155 } |
| 35742 | 1156 } |
| 1157 | |
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1158 static asdl_seq * |
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1159 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1160 { |
| 1161 int i, n_fors; | |
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1162 asdl_seq *comps; |
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1163 |
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1164 n_fors = count_comp_fors(c, n); |
| 35742 | 1165 if (n_fors == -1) |
| 1166 return NULL; | |
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1167 |
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1168 comps = asdl_seq_new(n_fors, c->c_arena); |
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1169 if (!comps) |
| 35742 | 1170 return NULL; |
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1171 |
| 35742 | 1172 for (i = 0; i < n_fors; i++) { |
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1173 comprehension_ty comp; |
| 35742 | 1174 asdl_seq *t; |
| 1175 expr_ty expression; | |
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1176 node *for_ch; |
| 35742 | 1177 |
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1178 REQ(n, comp_for); |
| 35742 | 1179 |
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1180 for_ch = CHILD(n, 1); |
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1181 t = ast_for_exprlist(c, for_ch, Store); |
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1182 if (!t) |
| 35742 | 1183 return NULL; |
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1184 expression = ast_for_expr(c, CHILD(n, 3)); |
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1185 if (!expression) |
| 35742 | 1186 return NULL; |
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1187 |
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1188 /* Check the # of children rather than the length of t, since |
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1189 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
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1190 if (NCH(for_ch) == 1) |
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1191 comp = comprehension((expr_ty)asdl_seq_GET(t, 0), expression, |
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1192 NULL, c->c_arena); |
| 35742 | 1193 else |
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1194 comp = comprehension(Tuple(t, Store, LINENO(n), n->n_col_offset, |
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1195 c->c_arena), |
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1196 expression, NULL, c->c_arena); |
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1197 |
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1198 if (!comp) |
| 35742 | 1199 return NULL; |
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1200 |
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1201 if (NCH(n) == 5) { |
| 35742 | 1202 int j, n_ifs; |
| 1203 asdl_seq *ifs; | |
| 1204 | |
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1205 n = CHILD(n, 4); |
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1206 n_ifs = count_comp_ifs(c, n); |
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1207 if (n_ifs == -1) |
| 35742 | 1208 return NULL; |
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1209 |
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1210 ifs = asdl_seq_new(n_ifs, c->c_arena); |
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1211 if (!ifs) |
| 35742 | 1212 return NULL; |
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1213 |
| 35742 | 1214 for (j = 0; j < n_ifs; j++) { |
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1215 REQ(n, comp_iter); |
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1216 n = CHILD(n, 0); |
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1217 REQ(n, comp_if); |
| 35742 | 1218 |
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1219 expression = ast_for_expr(c, CHILD(n, 1)); |
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1220 if (!expression) |
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1221 return NULL; |
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1222 asdl_seq_SET(ifs, j, expression); |
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1223 if (NCH(n) == 3) |
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1224 n = CHILD(n, 2); |
| 35742 | 1225 } |
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1226 /* on exit, must guarantee that n is a comp_for */ |
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1227 if (TYPE(n) == comp_iter) |
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1228 n = CHILD(n, 0); |
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1229 comp->ifs = ifs; |
| 35742 | 1230 } |
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1231 asdl_seq_SET(comps, i, comp); |
| 35742 | 1232 } |
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1233 return comps; |
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1234 } |
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1235 |
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1236 static expr_ty |
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1237 ast_for_itercomp(struct compiling *c, const node *n, int type) |
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1238 { |
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1239 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1240 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1241 expr_ty elt; |
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1242 asdl_seq *comps; |
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1243 |
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1244 assert(NCH(n) > 1); |
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1245 |
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1246 elt = ast_for_expr(c, CHILD(n, 0)); |
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1247 if (!elt) |
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1248 return NULL; |
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1249 |
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1250 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1251 if (!comps) |
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1252 return NULL; |
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1253 |
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1254 if (type == COMP_GENEXP) |
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1255 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1256 else if (type == COMP_LISTCOMP) |
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1257 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1258 else if (type == COMP_SETCOMP) |
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1259 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1260 else |
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1261 /* Should never happen */ |
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1262 return NULL; |
| 35742 | 1263 } |
| 1264 | |
| 1265 static expr_ty | |
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1266 ast_for_dictcomp(struct compiling *c, const node *n) |
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1267 { |
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1268 expr_ty key, value; |
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1269 asdl_seq *comps; |
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1270 |
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1271 assert(NCH(n) > 3); |
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1272 REQ(CHILD(n, 1), COLON); |
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1273 |
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|
1274 key = ast_for_expr(c, CHILD(n, 0)); |
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1275 if (!key) |
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1276 return NULL; |
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1277 |
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1278 value = ast_for_expr(c, CHILD(n, 2)); |
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1279 if (!value) |
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1280 return NULL; |
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1281 |
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1282 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1283 if (!comps) |
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1284 return NULL; |
|
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1285 |
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1286 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1287 } |
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1288 |
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1289 static expr_ty |
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1290 ast_for_genexp(struct compiling *c, const node *n) |
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1291 { |
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1292 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1293 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1294 } |
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1295 |
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1296 static expr_ty |
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1297 ast_for_listcomp(struct compiling *c, const node *n) |
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1298 { |
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1299 assert(TYPE(n) == (testlist_comp)); |
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1300 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1301 } |
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1302 |
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1303 static expr_ty |
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1304 ast_for_setcomp(struct compiling *c, const node *n) |
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1305 { |
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1306 assert(TYPE(n) == (dictorsetmaker)); |
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1307 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1308 } |
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1309 |
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1310 |
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1311 static expr_ty |
| 35742 | 1312 ast_for_atom(struct compiling *c, const node *n) |
| 1313 { | |
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1314 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1315 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
|
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1316 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1317 */ |
| 1318 node *ch = CHILD(n, 0); | |
| 40894 | 1319 int bytesmode = 0; |
| 35742 | 1320 |
| 1321 switch (TYPE(ch)) { | |
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1322 case NAME: { |
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1323 /* All names start in Load context, but may later be |
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1324 changed. */ |
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1325 PyObject *name = NEW_IDENTIFIER(ch); |
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1326 if (!name) |
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1327 return NULL; |
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1328 return Name(name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1329 } |
| 35742 | 1330 case STRING: { |
| 40894 | 1331 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1332 if (!str) { |
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1333 if (PyErr_ExceptionMatches(PyExc_UnicodeError)) { |
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1334 PyObject *type, *value, *tback, *errstr; |
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1335 PyErr_Fetch(&type, &value, &tback); |
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1336 errstr = PyObject_Str(value); |
|
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1337 if (errstr) { |
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1338 char *s = ""; |
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1339 char buf[128]; |
|
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1340 s = _PyUnicode_AsString(errstr); |
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1341 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
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1342 ast_error(n, buf); |
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1343 Py_DECREF(errstr); |
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1344 } else { |
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1345 ast_error(n, "(unicode error) unknown error"); |
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1346 } |
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1347 Py_DECREF(type); |
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|
1348 Py_DECREF(value); |
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1349 Py_XDECREF(tback); |
|
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1350 } |
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1351 return NULL; |
|
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1352 } |
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|
1353 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1354 if (bytesmode) |
| 1355 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1356 else | |
| 1357 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1358 } |
| 1359 case NUMBER: { | |
|
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1360 PyObject *pynum = parsenumber(c, STR(ch)); |
|
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1361 if (!pynum) |
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1362 return NULL; |
|
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1363 |
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1364 PyArena_AddPyObject(c->c_arena, pynum); |
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1365 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1366 } |
|
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|
1367 case ELLIPSIS: /* Ellipsis */ |
|
40529
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1368 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1369 case LPAR: /* some parenthesized expressions */ |
|
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1370 ch = CHILD(n, 1); |
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1371 |
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1372 if (TYPE(ch) == RPAR) |
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1373 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1374 |
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1375 if (TYPE(ch) == yield_expr) |
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1376 return ast_for_expr(c, ch); |
|
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1377 |
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1378 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
|
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1379 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
|
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1380 return ast_for_genexp(c, ch); |
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1381 |
|
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|
1382 return ast_for_testlist(c, ch); |
| 35742 | 1383 case LSQB: /* list (or list comprehension) */ |
|
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1384 ch = CHILD(n, 1); |
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1385 |
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|
1386 if (TYPE(ch) == RSQB) |
|
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1387 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1388 |
|
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|
1389 REQ(ch, testlist_comp); |
|
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1390 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
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|
1391 asdl_seq *elts = seq_for_testlist(c, ch); |
|
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1392 if (!elts) |
|
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1393 return NULL; |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1394 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1395 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1396 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1397 else |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1398 return ast_for_listcomp(c, ch); |
| 35742 | 1399 case LBRACE: { |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1400 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1401 * test (gen_for | (',' test)* [',']) */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1402 int i, size; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1403 asdl_seq *keys, *values; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1404 |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1405 ch = CHILD(n, 1); |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1406 if (TYPE(ch) == RBRACE) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1407 /* it's an empty dict */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1408 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1409 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1410 /* it's a simple set */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
parents:
41464
diff
changeset
|
1411 asdl_seq *elts; |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1412 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
parents:
41464
diff
changeset
|
1413 elts = asdl_seq_new(size, c->c_arena); |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1414 if (!elts) |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1415 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1416 for (i = 0; i < NCH(ch); i += 2) { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1417 expr_ty expression; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1418 expression = ast_for_expr(c, CHILD(ch, i)); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1419 if (!expression) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1420 return NULL; |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1421 asdl_seq_SET(elts, i / 2, expression); |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1422 } |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1423 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1424 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1425 /* it's a set comprehension */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1426 return ast_for_setcomp(c, ch); |
|
42193
090588a17490
Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
42084
diff
changeset
|
1427 } else if (NCH(ch) > 3 && TYPE(CHILD(ch, 3)) == comp_for) { |
|
090588a17490
Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
42084
diff
changeset
|
1428 return ast_for_dictcomp(c, ch); |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1429 } else { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1430 /* it's a dict */ |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1431 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1432 keys = asdl_seq_new(size, c->c_arena); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1433 if (!keys) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1434 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1435 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1436 values = asdl_seq_new(size, c->c_arena); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1437 if (!values) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1438 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1439 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1440 for (i = 0; i < NCH(ch); i += 4) { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1441 expr_ty expression; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1442 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1443 expression = ast_for_expr(c, CHILD(ch, i)); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1444 if (!expression) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1445 return NULL; |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1446 |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1447 asdl_seq_SET(keys, i / 4, expression); |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
1448 |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1449 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1450 if (!expression) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1451 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1452 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1453 asdl_seq_SET(values, i / 4, expression); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1454 } |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1455 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1456 } |
| 35742 | 1457 } |
| 1458 default: | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1459 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1460 return NULL; |
| 35742 | 1461 } |
| 1462 } | |
| 1463 | |
| 1464 static slice_ty | |
| 1465 ast_for_slice(struct compiling *c, const node *n) | |
| 1466 { | |
| 1467 node *ch; | |
| 1468 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1469 | |
| 1470 REQ(n, subscript); | |
| 1471 | |
| 1472 /* | |
|
39783
7a0ad110e91e
Patch #1550786: ellipsis literal.
Georg Brandl <georg@python.org>
parents:
39782
diff
changeset
|
1473 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1474 sliceop: ':' [test] |
| 1475 */ | |
| 1476 ch = CHILD(n, 0); | |
| 1477 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1478 /* 'step' variable hold no significance in terms of being used over | |
| 1479 other vars */ | |
| 1480 step = ast_for_expr(c, ch); | |
| 1481 if (!step) | |
| 1482 return NULL; | |
| 1483 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1484 return Index(step, c->c_arena); |
| 35742 | 1485 } |
| 1486 | |
| 1487 if (TYPE(ch) == test) { | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1488 lower = ast_for_expr(c, ch); |
| 35742 | 1489 if (!lower) |
| 1490 return NULL; | |
| 1491 } | |
| 1492 | |
| 1493 /* If there's an upper bound it's in the second or third position. */ | |
| 1494 if (TYPE(ch) == COLON) { | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1495 if (NCH(n) > 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1496 node *n2 = CHILD(n, 1); |
| 35742 | 1497 |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1498 if (TYPE(n2) == test) { |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1499 upper = ast_for_expr(c, n2); |
| 35742 | 1500 if (!upper) |
| 1501 return NULL; | |
| 1502 } | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1503 } |
| 35742 | 1504 } else if (NCH(n) > 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1505 node *n2 = CHILD(n, 2); |
| 35742 | 1506 |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1507 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1508 upper = ast_for_expr(c, n2); |
| 35742 | 1509 if (!upper) |
| 1510 return NULL; | |
| 1511 } | |
| 1512 } | |
| 1513 | |
| 1514 ch = CHILD(n, NCH(n) - 1); | |
| 1515 if (TYPE(ch) == sliceop) { | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1516 if (NCH(ch) == 1) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1517 /* No expression, so step is None */ |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1518 ch = CHILD(ch, 0); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1519 step = Name(new_identifier("None", c->c_arena), Load, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1520 LINENO(ch), ch->n_col_offset, c->c_arena); |
| 35742 | 1521 if (!step) |
| 1522 return NULL; | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1523 } else { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1524 ch = CHILD(ch, 1); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1525 if (TYPE(ch) == test) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1526 step = ast_for_expr(c, ch); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1527 if (!step) |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1528 return NULL; |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1529 } |
| 35742 | 1530 } |
| 1531 } | |
| 1532 | |
|
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
|
1533 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1534 } |
| 1535 | |
| 1536 static expr_ty | |
| 1537 ast_for_binop(struct compiling *c, const node *n) | |
| 1538 { | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
1539 /* Must account for a sequence of expressions. |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
1540 How should A op B op C by represented? |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
1541 BinOp(BinOp(A, op, B), op, C). |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
1542 */ |
| 35742 | 1543 |
|
41554
06145fbc7ab9
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Guido van Rossum <guido@python.org>
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changeset
|
1544 int i, nops; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
1545 expr_ty expr1, expr2, result; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
1546 operator_ty newoperator; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1547 |
|
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|
1548 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
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|
1549 if (!expr1) |
|
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|
1550 return NULL; |
| 35742 | 1551 |
|
41554
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|
1552 expr2 = ast_for_expr(c, CHILD(n, 2)); |
|
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|
1553 if (!expr2) |
|
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|
1554 return NULL; |
|
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|
1555 |
|
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|
1556 newoperator = get_operator(CHILD(n, 1)); |
|
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|
1557 if (!newoperator) |
|
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|
1558 return NULL; |
| 35742 | 1559 |
|
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|
1560 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
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|
1561 c->c_arena); |
|
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|
1562 if (!result) |
|
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|
1563 return NULL; |
| 35742 | 1564 |
|
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|
1565 nops = (NCH(n) - 1) / 2; |
|
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|
1566 for (i = 1; i < nops; i++) { |
|
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|
1567 expr_ty tmp_result, tmp; |
|
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|
1568 const node* next_oper = CHILD(n, i * 2 + 1); |
|
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|
1569 |
|
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|
1570 newoperator = get_operator(next_oper); |
|
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|
1571 if (!newoperator) |
| 35742 | 1572 return NULL; |
| 1573 | |
|
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|
1574 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
|
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|
1575 if (!tmp) |
| 35742 | 1576 return NULL; |
| 1577 | |
|
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|
1578 tmp_result = BinOp(result, newoperator, tmp, |
|
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|
1579 LINENO(next_oper), next_oper->n_col_offset, |
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|
1580 c->c_arena); |
|
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|
1581 if (!tmp_result) |
|
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|
1582 return NULL; |
|
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|
1583 result = tmp_result; |
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|
1584 } |
|
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|
1585 return result; |
| 35742 | 1586 } |
| 1587 | |
|
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|
1588 static expr_ty |
|
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|
1589 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
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|
1590 { |
|
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|
1591 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
|
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|
1592 subscriptlist: subscript (',' subscript)* [','] |
|
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|
1593 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
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|
1594 */ |
|
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|
1595 REQ(n, trailer); |
|
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|
1596 if (TYPE(CHILD(n, 0)) == LPAR) { |
|
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|
1597 if (NCH(n) == 2) |
|
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|
1598 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
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1599 n->n_col_offset, c->c_arena); |
|
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|
1600 else |
|
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1601 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
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|
1602 } |
|
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1603 else if (TYPE(CHILD(n, 0)) == DOT ) { |
|
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1604 PyObject *attr_id = NEW_IDENTIFIER(CHILD(n, 1)); |
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1605 if (!attr_id) |
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1606 return NULL; |
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1607 return Attribute(left_expr, attr_id, Load, |
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1608 LINENO(n), n->n_col_offset, c->c_arena); |
|
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1609 } |
|
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1610 else { |
|
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1611 REQ(CHILD(n, 0), LSQB); |
|
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|
1612 REQ(CHILD(n, 2), RSQB); |
|
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|
1613 n = CHILD(n, 1); |
|
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|
1614 if (NCH(n) == 1) { |
|
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|
1615 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
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|
1616 if (!slc) |
|
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|
1617 return NULL; |
|
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|
1618 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
|
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|
1619 c->c_arena); |
|
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|
1620 } |
|
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|
1621 else { |
|
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|
1622 /* The grammar is ambiguous here. The ambiguity is resolved |
|
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|
1623 by treating the sequence as a tuple literal if there are |
|
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|
1624 no slice features. |
|
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|
1625 */ |
|
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|
1626 int j; |
|
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|
1627 slice_ty slc; |
|
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|
1628 expr_ty e; |
|
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|
1629 int simple = 1; |
|
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diff
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|
1630 asdl_seq *slices, *elts; |
|
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diff
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|
1631 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
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|
1632 if (!slices) |
|
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|
1633 return NULL; |
|
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changeset
|
1634 for (j = 0; j < NCH(n); j += 2) { |
|
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diff
changeset
|
1635 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>
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diff
changeset
|
1636 if (!slc) |
|
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changeset
|
1637 return NULL; |
|
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diff
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|
1638 if (slc->kind != Index_kind) |
|
40941
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|
1639 simple = 0; |
|
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diff
changeset
|
1640 asdl_seq_SET(slices, j / 2, slc); |
|
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diff
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|
1641 } |
|
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|
1642 if (!simple) { |
|
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diff
changeset
|
1643 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
|
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|
1644 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1645 } |
|
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|
1646 /* extract Index values and put them in a Tuple */ |
|
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36682
diff
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|
1647 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
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e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
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diff
changeset
|
1648 if (!elts) |
|
e9a7a2784e17
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|
1649 return NULL; |
|
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|
1650 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
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|
1651 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
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|
1652 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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|
1653 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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diff
changeset
|
1654 } |
|
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Martin v. Löwis <martin@v.loewis.de>
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changeset
|
1655 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1656 if (!e) |
|
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|
1657 return NULL; |
|
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diff
changeset
|
1658 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>
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diff
changeset
|
1659 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1660 } |
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1661 } |
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1662 } |
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|
1663 |
|
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|
1664 static expr_ty |
|
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1665 ast_for_factor(struct compiling *c, const node *n) |
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1666 { |
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1667 node *pfactor, *ppower, *patom, *pnum; |
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1668 expr_ty expression; |
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1669 |
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1670 /* If the unary - operator is applied to a constant, don't generate |
|
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1671 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
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1672 constant. The peephole optimizer already does something like |
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1673 this but it doesn't handle the case where the constant is |
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1674 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
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1675 PyLongObject. |
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1676 */ |
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1677 if (TYPE(CHILD(n, 0)) == MINUS |
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1678 && NCH(n) == 2 |
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1679 && TYPE((pfactor = CHILD(n, 1))) == factor |
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1680 && NCH(pfactor) == 1 |
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1681 && TYPE((ppower = CHILD(pfactor, 0))) == power |
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1682 && NCH(ppower) == 1 |
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1683 && TYPE((patom = CHILD(ppower, 0))) == atom |
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1684 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
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1685 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
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1686 if (s == NULL) |
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1687 return NULL; |
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1688 s[0] = '-'; |
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1689 strcpy(s + 1, STR(pnum)); |
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1690 PyObject_FREE(STR(pnum)); |
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1691 STR(pnum) = s; |
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1692 return ast_for_atom(c, patom); |
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1693 } |
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1694 |
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1695 expression = ast_for_expr(c, CHILD(n, 1)); |
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1696 if (!expression) |
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1697 return NULL; |
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1698 |
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1699 switch (TYPE(CHILD(n, 0))) { |
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1700 case PLUS: |
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1701 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
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1702 c->c_arena); |
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1703 case MINUS: |
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1704 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
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1705 c->c_arena); |
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1706 case TILDE: |
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1707 return UnaryOp(Invert, expression, LINENO(n), |
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1708 n->n_col_offset, c->c_arena); |
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1709 } |
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1710 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
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1711 TYPE(CHILD(n, 0))); |
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1712 return NULL; |
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1713 } |
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1714 |
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1715 static expr_ty |
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1716 ast_for_power(struct compiling *c, const node *n) |
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1717 { |
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1718 /* power: atom trailer* ('**' factor)* |
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1719 */ |
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1720 int i; |
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1721 expr_ty e, tmp; |
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1722 REQ(n, power); |
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1723 e = ast_for_atom(c, CHILD(n, 0)); |
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1724 if (!e) |
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1725 return NULL; |
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1726 if (NCH(n) == 1) |
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|
1727 return e; |
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1728 for (i = 1; i < NCH(n); i++) { |
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1729 node *ch = CHILD(n, i); |
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1730 if (TYPE(ch) != trailer) |
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1731 break; |
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1732 tmp = ast_for_trailer(c, ch, e); |
|
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1733 if (!tmp) |
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1734 return NULL; |
|
40450
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1735 tmp->lineno = e->lineno; |
|
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1736 tmp->col_offset = e->col_offset; |
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1737 e = tmp; |
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1738 } |
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1739 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
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1740 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
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1741 if (!f) |
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1742 return NULL; |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
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36780
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|
1743 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1744 if (!tmp) |
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1745 return NULL; |
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1746 e = tmp; |
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1747 } |
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1748 return e; |
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1749 } |
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1750 |
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1751 static expr_ty |
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1752 ast_for_starred(struct compiling *c, const node *n) |
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1753 { |
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1754 expr_ty tmp; |
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1755 REQ(n, star_expr); |
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1756 |
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1757 tmp = ast_for_expr(c, CHILD(n, 1)); |
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1758 if (!tmp) |
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1759 return NULL; |
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1760 |
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1761 /* The Load context is changed later. */ |
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1762 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1763 } |
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1764 |
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|
1765 |
| 35742 | 1766 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1767 */ | |
| 1768 | |
| 1769 static expr_ty | |
| 1770 ast_for_expr(struct compiling *c, const node *n) | |
| 1771 { | |
| 1772 /* handle the full range of simple expressions | |
|
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1773 test: or_test ['if' or_test 'else' test] | lambdef |
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1774 test_nocond: or_test | lambdef_nocond |
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1775 or_test: and_test ('or' and_test)* |
| 35742 | 1776 and_test: not_test ('and' not_test)* |
| 1777 not_test: 'not' not_test | comparison | |
| 1778 comparison: expr (comp_op expr)* | |
| 1779 expr: xor_expr ('|' xor_expr)* | |
| 1780 xor_expr: and_expr ('^' and_expr)* | |
| 1781 and_expr: shift_expr ('&' shift_expr)* | |
| 1782 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1783 arith_expr: term (('+'|'-') term)* | |
| 1784 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1785 factor: ('+'|'-'|'~') factor | power | |
| 1786 power: atom trailer* ('**' factor)* | |
| 1787 */ | |
| 1788 | |
| 1789 asdl_seq *seq; | |
| 1790 int i; | |
| 1791 | |
| 1792 loop: | |
| 1793 switch (TYPE(n)) { | |
| 1794 case test: | |
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1795 case test_nocond: |
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1796 if (TYPE(CHILD(n, 0)) == lambdef || |
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1797 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1798 return ast_for_lambdef(c, CHILD(n, 0)); |
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1799 else if (NCH(n) > 1) |
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1800 return ast_for_ifexpr(c, n); |
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1801 /* Fallthrough */ |
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1802 case or_test: |
| 35742 | 1803 case and_test: |
| 1804 if (NCH(n) == 1) { | |
| 1805 n = CHILD(n, 0); | |
| 1806 goto loop; | |
| 1807 } | |
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1808 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1809 if (!seq) |
| 1810 return NULL; | |
| 1811 for (i = 0; i < NCH(n); i += 2) { | |
| 1812 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1813 if (!e) | |
| 1814 return NULL; | |
| 1815 asdl_seq_SET(seq, i / 2, e); | |
| 1816 } | |
| 1817 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
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1818 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
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1819 c->c_arena); |
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1820 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
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1821 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1822 case not_test: |
| 1823 if (NCH(n) == 1) { | |
| 1824 n = CHILD(n, 0); | |
| 1825 goto loop; | |
| 1826 } | |
| 1827 else { | |
| 1828 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1829 if (!expression) | |
| 1830 return NULL; | |
| 1831 | |
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1832 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
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1833 c->c_arena); |
| 35742 | 1834 } |
| 1835 case comparison: | |
| 1836 if (NCH(n) == 1) { | |
| 1837 n = CHILD(n, 0); | |
| 1838 goto loop; | |
| 1839 } | |
| 1840 else { | |
| 1841 expr_ty expression; | |
|
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1842 asdl_int_seq *ops; |
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1843 asdl_seq *cmps; |
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1844 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1845 if (!ops) |
| 1846 return NULL; | |
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1847 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1848 if (!cmps) { |
| 1849 return NULL; | |
| 1850 } | |
| 1851 for (i = 1; i < NCH(n); i += 2) { | |
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1852 cmpop_ty newoperator; |
| 35742 | 1853 |
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1854 newoperator = ast_for_comp_op(c, CHILD(n, i)); |
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1855 if (!newoperator) { |
| 35742 | 1856 return NULL; |
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1857 } |
| 35742 | 1858 |
| 1859 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
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1860 if (!expression) { |
| 35742 | 1861 return NULL; |
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1862 } |
| 35742 | 1863 |
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1864 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1865 asdl_seq_SET(cmps, i / 2, expression); |
| 1866 } | |
| 1867 expression = ast_for_expr(c, CHILD(n, 0)); | |
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1868 if (!expression) { |
| 35742 | 1869 return NULL; |
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1870 } |
| 35742 | 1871 |
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1872 return Compare(expression, ops, cmps, LINENO(n), |
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1873 n->n_col_offset, c->c_arena); |
| 35742 | 1874 } |
| 1875 break; | |
| 1876 | |
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1877 case star_expr: |
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1878 if (TYPE(CHILD(n, 0)) == STAR) { |
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1879 return ast_for_starred(c, n); |
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1880 } |
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1881 /* Fallthrough */ |
| 35742 | 1882 /* The next five cases all handle BinOps. The main body of code |
| 1883 is the same in each case, but the switch turned inside out to | |
| 1884 reuse the code for each type of operator. | |
| 1885 */ | |
| 1886 case expr: | |
| 1887 case xor_expr: | |
| 1888 case and_expr: | |
| 1889 case shift_expr: | |
| 1890 case arith_expr: | |
| 1891 case term: | |
| 1892 if (NCH(n) == 1) { | |
| 1893 n = CHILD(n, 0); | |
| 1894 goto loop; | |
| 1895 } | |
| 1896 return ast_for_binop(c, n); | |
| 1897 case yield_expr: { | |
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1898 expr_ty exp = NULL; |
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1899 if (NCH(n) == 2) { |
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1900 exp = ast_for_testlist(c, CHILD(n, 1)); |
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1901 if (!exp) |
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1902 return NULL; |
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1903 } |
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1904 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
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1905 } |
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1906 case factor: |
| 35742 | 1907 if (NCH(n) == 1) { |
| 1908 n = CHILD(n, 0); | |
| 1909 goto loop; | |
| 1910 } | |
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1911 return ast_for_factor(c, n); |
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1912 case power: |
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1913 return ast_for_power(c, n); |
| 35742 | 1914 default: |
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1915 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1916 return NULL; |
| 1917 } | |
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1918 /* should never get here unless if error is set */ |
| 35742 | 1919 return NULL; |
| 1920 } | |
| 1921 | |
| 1922 static expr_ty | |
| 1923 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1924 { | |
| 1925 /* | |
| 1926 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1927 | '**' test) | |
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1928 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1929 */ |
| 1930 | |
| 1931 int i, nargs, nkeywords, ngens; | |
|
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1932 asdl_seq *args; |
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1933 asdl_seq *keywords; |
| 35742 | 1934 expr_ty vararg = NULL, kwarg = NULL; |
| 1935 | |
| 1936 REQ(n, arglist); | |
| 1937 | |
| 1938 nargs = 0; | |
| 1939 nkeywords = 0; | |
| 1940 ngens = 0; | |
| 1941 for (i = 0; i < NCH(n); i++) { | |
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1942 node *ch = CHILD(n, i); |
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1943 if (TYPE(ch) == argument) { |
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1944 if (NCH(ch) == 1) |
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1945 nargs++; |
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1946 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1947 ngens++; |
| 35742 | 1948 else |
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1949 nkeywords++; |
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1950 } |
| 35742 | 1951 } |
| 1952 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
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1953 ast_error(n, "Generator expression must be parenthesized " |
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1954 "if not sole argument"); |
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1955 return NULL; |
| 35742 | 1956 } |
| 1957 | |
| 1958 if (nargs + nkeywords + ngens > 255) { | |
| 1959 ast_error(n, "more than 255 arguments"); | |
| 1960 return NULL; | |
| 1961 } | |
| 1962 | |
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1963 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1964 if (!args) |
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1965 return NULL; |
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1966 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1967 if (!keywords) |
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1968 return NULL; |
| 35742 | 1969 nargs = 0; |
| 1970 nkeywords = 0; | |
| 1971 for (i = 0; i < NCH(n); i++) { | |
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1972 node *ch = CHILD(n, i); |
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1973 if (TYPE(ch) == argument) { |
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1974 expr_ty e; |
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1975 if (NCH(ch) == 1) { |
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1976 if (nkeywords) { |
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1977 ast_error(CHILD(ch, 0), |
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1978 "non-keyword arg after keyword arg"); |
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1979 return NULL; |
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1980 } |
|
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1981 if (vararg) { |
|
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1982 ast_error(CHILD(ch, 0), |
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1983 "only named arguments may follow *expression"); |
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1984 return NULL; |
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1985 } |
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1986 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1987 if (!e) |
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1988 return NULL; |
|
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1989 asdl_seq_SET(args, nargs++, e); |
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1990 } |
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1991 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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1992 e = ast_for_genexp(c, ch); |
| 35742 | 1993 if (!e) |
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1994 return NULL; |
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1995 asdl_seq_SET(args, nargs++, e); |
| 35742 | 1996 } |
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1997 else { |
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1998 keyword_ty kw; |
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1999 identifier key, tmp; |
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2000 int k; |
| 35742 | 2001 |
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2002 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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2003 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 2004 if (!e) |
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2005 return NULL; |
| 35742 | 2006 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 2007 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 2008 * SF bug 132313 points out that complaining about a keyword | |
| 2009 * then is very confusing. | |
| 2010 */ | |
| 2011 if (e->kind == Lambda_kind) { | |
| 2012 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
|
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2013 return NULL; |
| 35742 | 2014 } else if (e->kind != Name_kind) { |
| 2015 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
|
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2016 return NULL; |
|
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2017 } else if (forbidden_name(e, ch)) { |
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2018 return NULL; |
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2019 } |
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2020 key = e->v.Name.id; |
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2021 for (k = 0; k < nkeywords; k++) { |
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2022 tmp = ((keyword_ty)asdl_seq_GET(keywords, k))->arg; |
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2023 if (!PyUnicode_Compare(tmp, key)) { |
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2024 ast_error(CHILD(ch, 0), "keyword argument repeated"); |
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2025 return NULL; |
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2026 } |
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2027 } |
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2028 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 2029 if (!e) |
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2030 return NULL; |
|
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2031 kw = keyword(key, e, c->c_arena); |
| 35742 | 2032 if (!kw) |
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2033 return NULL; |
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2034 asdl_seq_SET(keywords, nkeywords++, kw); |
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2035 } |
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2036 } |
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2037 else if (TYPE(ch) == STAR) { |
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2038 vararg = ast_for_expr(c, CHILD(n, i+1)); |
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2039 if (!vararg) |
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2040 return NULL; |
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2041 i++; |
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2042 } |
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2043 else if (TYPE(ch) == DOUBLESTAR) { |
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2044 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
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2045 if (!kwarg) |
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2046 return NULL; |
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2047 i++; |
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2048 } |
| 35742 | 2049 } |
| 2050 | |
|
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2051 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 2052 } |
| 2053 | |
| 2054 static expr_ty | |
|
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2055 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 2056 { |
|
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2057 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
|
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2058 /* testlist: test (',' test)* [','] */ |
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2059 /* testlist1: test (',' test)* */ |
| 35742 | 2060 assert(NCH(n) > 0); |
|
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2061 if (TYPE(n) == testlist_comp) { |
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2062 if (NCH(n) > 1) |
|
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2063 assert(TYPE(CHILD(n, 1)) != comp_for); |
|
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2064 } |
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2065 else { |
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2066 assert(TYPE(n) == testlist || |
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2067 TYPE(n) == testlist1); |
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2068 } |
| 35742 | 2069 if (NCH(n) == 1) |
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2070 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 2071 else { |
| 2072 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 2073 if (!tmp) | |
| 2074 return NULL; | |
|
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2075 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2076 } |
|
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2077 } |
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2078 |
| 35742 | 2079 static stmt_ty |
| 2080 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2081 { | |
| 2082 REQ(n, expr_stmt); | |
| 2083 /* expr_stmt: testlist (augassign (yield_expr|testlist) | |
| 2084 | ('=' (yield_expr|testlist))*) | |
| 2085 testlist: test (',' test)* [','] | |
| 2086 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | |
|
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2087 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2088 test: ... here starts the operator precendence dance |
| 2089 */ | |
| 2090 | |
| 2091 if (NCH(n) == 1) { | |
|
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2092 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2093 if (!e) |
| 2094 return NULL; | |
| 2095 | |
|
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2096 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2097 } |
| 2098 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2099 expr_ty expr1, expr2; | |
|
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|
2100 operator_ty newoperator; |
|
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2101 node *ch = CHILD(n, 0); |
| 35742 | 2102 |
|
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2103 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2104 if (!expr1) |
| 2105 return NULL; | |
|
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2106 if(!set_context(c, expr1, Store, ch)) |
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2107 return NULL; |
| 35742 | 2108 |
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2109 ch = CHILD(n, 2); |
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2110 if (TYPE(ch) == testlist) |
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2111 expr2 = ast_for_testlist(c, ch); |
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2112 else |
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|
2113 expr2 = ast_for_expr(c, ch); |
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2114 if (!expr2) |
| 35742 | 2115 return NULL; |
| 2116 | |
|
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2117 newoperator = ast_for_augassign(c, CHILD(n, 1)); |
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|
2118 if (!newoperator) |
| 35742 | 2119 return NULL; |
| 2120 | |
|
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|
2121 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2122 } |
| 2123 else { | |
|
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|
2124 int i; |
|
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|
2125 asdl_seq *targets; |
|
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|
2126 node *value; |
| 35742 | 2127 expr_ty expression; |
| 2128 | |
|
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|
2129 /* a normal assignment */ |
|
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|
2130 REQ(CHILD(n, 1), EQUAL); |
|
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|
2131 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
|
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|
2132 if (!targets) |
|
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|
2133 return NULL; |
|
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|
2134 for (i = 0; i < NCH(n) - 2; i += 2) { |
|
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|
2135 expr_ty e; |
|
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|
2136 node *ch = CHILD(n, i); |
|
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|
2137 if (TYPE(ch) == yield_expr) { |
|
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|
2138 ast_error(ch, "assignment to yield expression not possible"); |
|
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|
2139 return NULL; |
|
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|
2140 } |
|
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Four months of trunk changes (including a few releases...)
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changeset
|
2141 e = ast_for_testlist(c, ch); |
| 35742 | 2142 |
|
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|
2143 /* set context to assign */ |
|
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Four months of trunk changes (including a few releases...)
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|
2144 if (!e) |
|
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|
2145 return NULL; |
| 35742 | 2146 |
|
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031dfe455585
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|
2147 if (!set_context(c, e, Store, CHILD(n, i))) |
|
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|
2148 return NULL; |
| 35742 | 2149 |
|
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|
2150 asdl_seq_SET(targets, i / 2, e); |
|
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|
2151 } |
|
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|
2152 value = CHILD(n, NCH(n) - 1); |
|
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|
2153 if (TYPE(value) == testlist) |
|
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|
2154 expression = ast_for_testlist(c, value); |
|
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|
2155 else |
|
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|
2156 expression = ast_for_expr(c, value); |
|
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parents:
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|
2157 if (!expression) |
|
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Four months of trunk changes (including a few releases...)
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|
2158 return NULL; |
|
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|
2159 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2160 } |
| 2161 } | |
| 2162 | |
| 2163 static asdl_seq * | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2164 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2165 { |
| 2166 asdl_seq *seq; | |
| 2167 int i; | |
| 2168 expr_ty e; | |
| 2169 | |
| 2170 REQ(n, exprlist); | |
| 2171 | |
|
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|
2172 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2173 if (!seq) |
|
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|
2174 return NULL; |
| 35742 | 2175 for (i = 0; i < NCH(n); i += 2) { |
|
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|
2176 e = ast_for_expr(c, CHILD(n, i)); |
|
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|
2177 if (!e) |
|
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|
2178 return NULL; |
|
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|
2179 asdl_seq_SET(seq, i / 2, e); |
|
46664
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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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|
2180 if (context && !set_context(c, e, context, CHILD(n, i))) |
|
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|
2181 return NULL; |
| 35742 | 2182 } |
| 2183 return seq; | |
| 2184 } | |
| 2185 | |
| 2186 static stmt_ty | |
| 2187 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2188 { | |
| 2189 asdl_seq *expr_list; | |
| 2190 | |
| 2191 /* del_stmt: 'del' exprlist */ | |
| 2192 REQ(n, del_stmt); | |
| 2193 | |
| 2194 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2195 if (!expr_list) | |
| 2196 return NULL; | |
|
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changeset
|
2197 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2198 } |
| 2199 | |
| 2200 static stmt_ty | |
| 2201 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2202 { | |
| 2203 /* | |
| 2204 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2205 | yield_stmt | |
| 2206 break_stmt: 'break' | |
| 2207 continue_stmt: 'continue' | |
| 2208 return_stmt: 'return' [testlist] | |
| 2209 yield_stmt: yield_expr | |
| 2210 yield_expr: 'yield' testlist | |
| 2211 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2212 */ | |
| 2213 node *ch; | |
| 2214 | |
| 2215 REQ(n, flow_stmt); | |
| 2216 ch = CHILD(n, 0); | |
| 2217 switch (TYPE(ch)) { | |
| 2218 case break_stmt: | |
|
36786
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parents:
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diff
changeset
|
2219 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2220 case continue_stmt: |
|
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Patch #1440601: Add col_offset attribute to AST nodes.
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parents:
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changeset
|
2221 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2222 case yield_stmt: { /* will reduce to yield_expr */ |
|
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|
2223 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); |
|
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|
2224 if (!exp) |
|
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|
2225 return NULL; |
|
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Patch #1440601: Add col_offset attribute to AST nodes.
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diff
changeset
|
2226 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2227 } |
| 2228 case return_stmt: | |
| 2229 if (NCH(ch) == 1) | |
|
36786
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parents:
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diff
changeset
|
2230 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2231 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
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parents:
35771
diff
changeset
|
2232 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2233 if (!expression) |
| 2234 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
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parents:
36780
diff
changeset
|
2235 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2236 } |
| 2237 case raise_stmt: | |
| 2238 if (NCH(ch) == 1) | |
|
43102
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parents:
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diff
changeset
|
2239 return Raise(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
981ecc526703
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parents:
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diff
changeset
|
2240 else if (NCH(ch) >= 2) { |
|
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Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
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changeset
|
2241 expr_ty cause = NULL; |
| 35742 | 2242 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); |
| 2243 if (!expression) | |
| 2244 return NULL; | |
|
43102
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parents:
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diff
changeset
|
2245 if (NCH(ch) == 4) { |
|
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parents:
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diff
changeset
|
2246 cause = ast_for_expr(c, CHILD(ch, 3)); |
|
981ecc526703
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parents:
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changeset
|
2247 if (!cause) |
|
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diff
changeset
|
2248 return NULL; |
|
981ecc526703
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parents:
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diff
changeset
|
2249 } |
|
981ecc526703
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parents:
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changeset
|
2250 return Raise(expression, cause, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2251 } |
| 2252 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
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parents:
35868
diff
changeset
|
2253 PyErr_Format(PyExc_SystemError, |
| 35742 | 2254 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2255 return NULL; | |
| 2256 } | |
|
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|
2257 |
|
de16a85c3b4c
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diff
changeset
|
2258 PyErr_SetString(PyExc_SystemError, "unhandled flow statement"); |
|
de16a85c3b4c
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|
2259 return NULL; |
| 35742 | 2260 } |
| 2261 | |
| 2262 static alias_ty | |
|
36065
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parents:
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diff
changeset
|
2263 alias_for_import_name(struct compiling *c, const node *n) |
| 35742 | 2264 { |
| 2265 /* | |
|
36742
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2266 import_as_name: NAME ['as' NAME] |
|
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
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changeset
|
2267 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2268 dotted_name: NAME ('.' NAME)* |
| 2269 */ | |
|
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|
2270 PyObject *str, *name; |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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diff
changeset
|
2271 |
| 35742 | 2272 loop: |
| 2273 switch (TYPE(n)) { | |
| 2274 case import_as_name: | |
|
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|
2275 str = NULL; |
|
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|
2276 if (NCH(n) == 3) { |
|
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|
2277 str = NEW_IDENTIFIER(CHILD(n, 2)); |
|
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|
2278 if (!str) |
|
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|
2279 return NULL; |
|
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|
2280 } |
|
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|
2281 name = NEW_IDENTIFIER(CHILD(n, 0)); |
|
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|
2282 if (!name) |
|
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changeset
|
2283 return NULL; |
|
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changeset
|
2284 return alias(name, str, c->c_arena); |
| 35742 | 2285 case dotted_as_name: |
| 2286 if (NCH(n) == 1) { | |
| 2287 n = CHILD(n, 0); | |
| 2288 goto loop; | |
| 2289 } | |
| 2290 else { | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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parents:
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changeset
|
2291 alias_ty a = alias_for_import_name(c, CHILD(n, 0)); |
|
39610
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
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parents:
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changeset
|
2292 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2293 return NULL; |
| 35742 | 2294 assert(!a->asname); |
| 2295 a->asname = NEW_IDENTIFIER(CHILD(n, 2)); | |
|
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|
2296 if (!a->asname) |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
2297 return NULL; |
| 35742 | 2298 return a; |
| 2299 } | |
| 2300 break; | |
| 2301 case dotted_name: | |
|
49844
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
2302 if (NCH(n) == 1) { |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
2303 name = NEW_IDENTIFIER(CHILD(n, 0)); |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
2304 if (!name) |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
2305 return NULL; |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
2306 return alias(name, NULL, c->c_arena); |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
2307 } |
| 35742 | 2308 else { |
| 2309 /* 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
|
2310 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2311 size_t len; |
| 35742 | 2312 char *s; |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2313 PyObject *uni; |
| 35742 | 2314 |
| 2315 len = 0; | |
| 2316 for (i = 0; i < NCH(n); i += 2) | |
| 2317 /* length of string plus one for the dot */ | |
| 2318 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2319 len--; /* the last name doesn't have a dot */ | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2320 str = PyBytes_FromStringAndSize(NULL, len); |
| 35742 | 2321 if (!str) |
| 2322 return NULL; | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2323 s = PyBytes_AS_STRING(str); |
| 35742 | 2324 if (!s) |
| 2325 return NULL; | |
| 2326 for (i = 0; i < NCH(n); i += 2) { | |
| 2327 char *sch = STR(CHILD(n, i)); | |
| 2328 strcpy(s, STR(CHILD(n, i))); | |
| 2329 s += strlen(sch); | |
| 2330 *s++ = '.'; | |
| 2331 } | |
| 2332 --s; | |
| 2333 *s = '\0'; | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2334 uni = PyUnicode_DecodeUTF8(PyBytes_AS_STRING(str), |
|
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2335 PyBytes_GET_SIZE(str), |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2336 NULL); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2337 Py_DECREF(str); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2338 if (!uni) |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2339 return NULL; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2340 str = uni; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2341 PyUnicode_InternInPlace(&str); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2342 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2343 return alias(str, NULL, c->c_arena); |
| 35742 | 2344 } |
| 2345 break; | |
| 2346 case STAR: | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2347 str = PyUnicode_InternFromString("*"); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2348 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2349 return alias(str, NULL, c->c_arena); |
| 35742 | 2350 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2351 PyErr_Format(PyExc_SystemError, |
| 35742 | 2352 "unexpected import name: %d", TYPE(n)); |
| 2353 return NULL; | |
| 2354 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2355 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2356 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2357 return NULL; |
| 2358 } | |
| 2359 | |
| 2360 static stmt_ty | |
| 2361 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2362 { | |
| 2363 /* | |
| 2364 import_stmt: import_name | import_from | |
| 2365 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
|
2366 import_from: 'from' (('.' | '...')* dotted_name | ('.' | '...')+) |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2367 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2368 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2369 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2370 int col_offset; |
| 35742 | 2371 int i; |
| 2372 asdl_seq *aliases; | |
| 2373 | |
| 2374 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
|
2375 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2376 col_offset = n->n_col_offset; |
| 35742 | 2377 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2378 if (TYPE(n) == import_name) { |
| 35742 | 2379 n = CHILD(n, 1); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2380 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2381 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
|
2382 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2383 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2384 for (i = 0; i < NCH(n); i += 2) { |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2385 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i)); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2386 if (!import_alias) |
| 35742 | 2387 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2388 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2389 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2390 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2391 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2392 else if (TYPE(n) == import_from) { |
| 35742 | 2393 int n_children; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2394 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2395 alias_ty mod = NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2396 identifier modname; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2397 |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2398 /* 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
|
2399 optional module name */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2400 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
|
2401 if (TYPE(CHILD(n, idx)) == dotted_name) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2402 mod = alias_for_import_name(c, CHILD(n, idx)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2403 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2404 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2405 } 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
|
2406 /* 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
|
2407 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2408 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2409 } 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
|
2410 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2411 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2412 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2413 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2414 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
|
2415 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2416 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2417 /* from ... import * */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2418 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2419 n_children = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2420 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2421 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2422 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2423 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2424 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2425 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2426 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2427 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2428 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2429 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2430 if (n_children % 2 == 0) { |
| 35742 | 2431 ast_error(n, "trailing comma not allowed without" |
| 2432 " surrounding parentheses"); | |
| 2433 return NULL; | |
| 2434 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2435 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2436 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2437 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
|
2438 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2439 } |
| 35742 | 2440 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2441 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
|
2442 if (!aliases) |
| 35742 | 2443 return NULL; |
| 2444 | |
| 2445 /* 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
|
2446 if (TYPE(n) == STAR) { |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2447 alias_ty import_alias = alias_for_import_name(c, n); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2448 if (!import_alias) |
| 35742 | 2449 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2450 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2451 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2452 else { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2453 for (i = 0; i < NCH(n); i += 2) { |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2454 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i)); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2455 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2456 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2457 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
|
2458 } |
| 35742 | 2459 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2460 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2461 modname = mod->name; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2462 else |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2463 modname = new_identifier("", c->c_arena); |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2464 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
|
2465 c->c_arena); |
| 35742 | 2466 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2467 PyErr_Format(PyExc_SystemError, |
| 35742 | 2468 "unknown import statement: starts with command '%s'", |
| 2469 STR(CHILD(n, 0))); | |
| 2470 return NULL; | |
| 2471 } | |
| 2472 | |
| 2473 static stmt_ty | |
| 2474 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2475 { | |
| 2476 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2477 identifier name; | |
| 2478 asdl_seq *s; | |
| 2479 int i; | |
| 2480 | |
| 2481 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
|
2482 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2483 if (!s) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2484 return NULL; |
| 35742 | 2485 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
|
2486 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
|
2487 if (!name) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2488 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2489 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2490 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2491 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2492 } |
| 2493 | |
| 2494 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2495 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
|
2496 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2497 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2498 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2499 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2500 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2501 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2502 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2503 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
|
2504 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2505 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2506 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2507 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2508 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2509 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2510 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2511 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2512 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
|
2513 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2514 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2515 static stmt_ty |
| 35742 | 2516 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2517 { | |
| 2518 /* assert_stmt: 'assert' test [',' test] */ | |
| 2519 REQ(n, assert_stmt); | |
| 2520 if (NCH(n) == 2) { | |
| 2521 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2522 if (!expression) | |
| 2523 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2524 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2525 } |
| 2526 else if (NCH(n) == 4) { | |
| 2527 expr_ty expr1, expr2; | |
| 2528 | |
| 2529 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2530 if (!expr1) | |
| 2531 return NULL; | |
| 2532 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2533 if (!expr2) | |
| 2534 return NULL; | |
| 2535 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2536 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2537 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2538 PyErr_Format(PyExc_SystemError, |
| 35742 | 2539 "improper number of parts to 'assert' statement: %d", |
| 2540 NCH(n)); | |
| 2541 return NULL; | |
| 2542 } | |
| 2543 | |
| 2544 static asdl_seq * | |
| 2545 ast_for_suite(struct compiling *c, const node *n) | |
| 2546 { | |
| 2547 /* 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
|
2548 asdl_seq *seq; |
| 35742 | 2549 stmt_ty s; |
| 2550 int i, total, num, end, pos = 0; | |
| 2551 node *ch; | |
| 2552 | |
| 2553 REQ(n, suite); | |
| 2554 | |
| 2555 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
|
2556 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2557 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2558 return NULL; |
| 35742 | 2559 if (TYPE(CHILD(n, 0)) == simple_stmt) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2560 n = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2561 /* 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
|
2562 and may have a trailing SEMI |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2563 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2564 end = NCH(n) - 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2565 if (TYPE(CHILD(n, end - 1)) == SEMI) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2566 end--; |
| 35742 | 2567 /* loop by 2 to skip semi-colons */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2568 for (i = 0; i < end; i += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2569 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2570 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2571 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2572 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2573 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
|
2574 } |
| 35742 | 2575 } |
| 2576 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2577 for (i = 2; i < (NCH(n) - 1); i++) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2578 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2579 REQ(ch, stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2580 num = num_stmts(ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2581 if (num == 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2582 /* small_stmt or compound_stmt with only one child */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2583 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2584 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2585 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2586 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
|
2587 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2588 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2589 int j; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2590 ch = CHILD(ch, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2591 REQ(ch, simple_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2592 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
|
2593 /* 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
|
2594 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
|
2595 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2596 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2597 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2598 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
|
2599 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2600 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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:
40215
diff
changeset
|
2602 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2603 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2604 } |
| 35742 | 2605 } |
| 2606 assert(pos == seq->size); | |
| 2607 return seq; | |
| 2608 } | |
| 2609 | |
| 2610 static stmt_ty | |
| 2611 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2612 { | |
| 2613 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2614 ['else' ':' suite] | |
| 2615 */ | |
| 2616 char *s; | |
| 2617 | |
| 2618 REQ(n, if_stmt); | |
| 2619 | |
| 2620 if (NCH(n) == 4) { | |
| 2621 expr_ty expression; | |
| 2622 asdl_seq *suite_seq; | |
| 2623 | |
| 2624 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2625 if (!expression) | |
| 2626 return NULL; | |
| 2627 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
|
2628 if (!suite_seq) |
| 35742 | 2629 return NULL; |
| 2630 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2631 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2632 c->c_arena); |
| 35742 | 2633 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2634 |
| 35742 | 2635 s = STR(CHILD(n, 4)); |
| 2636 /* s[2], the third character in the string, will be | |
| 2637 's' for el_s_e, or | |
| 2638 'i' for el_i_f | |
| 2639 */ | |
| 2640 if (s[2] == 's') { | |
| 2641 expr_ty expression; | |
| 2642 asdl_seq *seq1, *seq2; | |
| 2643 | |
| 2644 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2645 if (!expression) | |
| 2646 return NULL; | |
| 2647 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2648 if (!seq1) |
| 35742 | 2649 return NULL; |
| 2650 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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|
2651 if (!seq2) |
| 35742 | 2652 return NULL; |
| 2653 | |
|
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|
2654 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, |
|
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|
2655 c->c_arena); |
| 35742 | 2656 } |
| 2657 else if (s[2] == 'i') { | |
|
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|
2658 int i, n_elif, has_else = 0; |
|
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|
2659 expr_ty expression; |
|
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|
2660 asdl_seq *suite_seq; |
|
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2661 asdl_seq *orelse = NULL; |
|
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|
2662 n_elif = NCH(n) - 4; |
| 35742 | 2663 /* must reference the child n_elif+1 since 'else' token is third, |
| 2664 not fourth, child from the end. */ | |
|
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2665 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
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|
2666 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
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|
2667 has_else = 1; |
|
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2668 n_elif -= 3; |
|
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|
2669 } |
|
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|
2670 n_elif /= 4; |
| 35742 | 2671 |
|
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|
2672 if (has_else) { |
|
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|
2673 asdl_seq *suite_seq2; |
| 35742 | 2674 |
|
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2675 orelse = asdl_seq_new(1, c->c_arena); |
|
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2676 if (!orelse) |
|
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|
2677 return NULL; |
| 35742 | 2678 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
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|
2679 if (!expression) |
| 35742 | 2680 return NULL; |
|
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|
2681 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
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|
2682 if (!suite_seq) |
|
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|
2683 return NULL; |
|
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|
2684 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
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|
2685 if (!suite_seq2) |
| 35742 | 2686 return NULL; |
| 2687 | |
|
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|
2688 asdl_seq_SET(orelse, 0, |
|
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|
2689 If(expression, suite_seq, suite_seq2, |
|
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|
2690 LINENO(CHILD(n, NCH(n) - 6)), |
|
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2691 CHILD(n, NCH(n) - 6)->n_col_offset, |
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|
2692 c->c_arena)); |
|
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2693 /* the just-created orelse handled the last elif */ |
|
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2694 n_elif--; |
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|
2695 } |
| 35742 | 2696 |
|
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|
2697 for (i = 0; i < n_elif; i++) { |
|
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|
2698 int off = 5 + (n_elif - i - 1) * 4; |
|
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|
2699 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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|
2700 if (!newobj) |
|
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2701 return NULL; |
| 35742 | 2702 expression = ast_for_expr(c, CHILD(n, off)); |
|
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|
2703 if (!expression) |
| 35742 | 2704 return NULL; |
| 2705 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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|
2706 if (!suite_seq) |
| 35742 | 2707 return NULL; |
| 2708 | |
|
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2709 asdl_seq_SET(newobj, 0, |
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2710 If(expression, suite_seq, orelse, |
|
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|
2711 LINENO(CHILD(n, off)), |
|
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|
2712 CHILD(n, off)->n_col_offset, c->c_arena)); |
|
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|
2713 orelse = newobj; |
|
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2714 } |
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|
2715 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
2716 if (!expression) |
|
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|
2717 return NULL; |
|
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|
2718 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
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|
2719 if (!suite_seq) |
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|
2720 return NULL; |
|
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|
2721 return If(expression, suite_seq, orelse, |
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|
2722 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2723 } |
|
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|
2724 |
|
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|
2725 PyErr_Format(PyExc_SystemError, |
|
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Cleanup a bit and make things more consistent.
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|
2726 "unexpected token in 'if' statement: %s", s); |
|
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Cleanup a bit and make things more consistent.
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changeset
|
2727 return NULL; |
| 35742 | 2728 } |
| 2729 | |
| 2730 static stmt_ty | |
| 2731 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2732 { | |
| 2733 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2734 REQ(n, while_stmt); | |
| 2735 | |
| 2736 if (NCH(n) == 4) { | |
| 2737 expr_ty expression; | |
| 2738 asdl_seq *suite_seq; | |
| 2739 | |
| 2740 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2741 if (!expression) | |
| 2742 return NULL; | |
| 2743 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2744 if (!suite_seq) |
| 35742 | 2745 return NULL; |
|
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|
2746 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2747 } |
| 2748 else if (NCH(n) == 7) { | |
| 2749 expr_ty expression; | |
| 2750 asdl_seq *seq1, *seq2; | |
| 2751 | |
| 2752 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2753 if (!expression) | |
| 2754 return NULL; | |
| 2755 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2756 if (!seq1) |
| 35742 | 2757 return NULL; |
| 2758 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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Cleanup a bit and make things more consistent.
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|
2759 if (!seq2) |
| 35742 | 2760 return NULL; |
| 2761 | |
|
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|
2762 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2763 } |
|
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Cleanup a bit and make things more consistent.
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|
2764 |
|
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diff
changeset
|
2765 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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36066
diff
changeset
|
2766 "wrong number of tokens for 'while' statement: %d", |
|
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diff
changeset
|
2767 NCH(n)); |
|
de16a85c3b4c
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diff
changeset
|
2768 return NULL; |
| 35742 | 2769 } |
| 2770 | |
| 2771 static stmt_ty | |
| 2772 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2773 { | |
|
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|
2774 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2775 expr_ty expression; |
| 2776 expr_ty target; | |
|
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|
2777 const node *node_target; |
| 35742 | 2778 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2779 REQ(n, for_stmt); | |
| 2780 | |
| 2781 if (NCH(n) == 9) { | |
|
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|
2782 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2783 if (!seq) |
| 2784 return NULL; | |
| 2785 } | |
| 2786 | |
|
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|
2787 node_target = CHILD(n, 1); |
|
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|
2788 _target = ast_for_exprlist(c, node_target, Store); |
|
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|
2789 if (!_target) |
| 35742 | 2790 return NULL; |
|
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|
2791 /* Check the # of children rather than the length of _target, since |
|
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|
2792 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2793 if (NCH(node_target) == 1) |
|
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|
2794 target = (expr_ty)asdl_seq_GET(_target, 0); |
| 35742 | 2795 else |
|
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|
2796 target = Tuple(_target, Store, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2797 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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changeset
|
2798 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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|
2799 if (!expression) |
| 35742 | 2800 return NULL; |
| 2801 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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diff
changeset
|
2802 if (!suite_seq) |
| 35742 | 2803 return NULL; |
| 2804 | |
|
37879
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Thomas Wouters <thomas@python.org>
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changeset
|
2805 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
2806 c->c_arena); |
| 35742 | 2807 } |
| 2808 | |
| 2809 static excepthandler_ty | |
| 2810 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2811 { | |
|
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|
2812 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2813 REQ(exc, except_clause); |
| 2814 REQ(body, suite); | |
| 2815 | |
| 2816 if (NCH(exc) == 1) { | |
| 2817 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2818 if (!suite_seq) | |
| 2819 return NULL; | |
| 2820 | |
|
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|
2821 return ExceptHandler(NULL, NULL, suite_seq, LINENO(exc), |
|
37879
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Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
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changeset
|
2822 exc->n_col_offset, c->c_arena); |
| 35742 | 2823 } |
| 2824 else if (NCH(exc) == 2) { | |
| 2825 expr_ty expression; | |
| 2826 asdl_seq *suite_seq; | |
| 2827 | |
| 2828 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2829 if (!expression) | |
| 2830 return NULL; | |
| 2831 suite_seq = ast_for_suite(c, body); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2832 if (!suite_seq) |
| 35742 | 2833 return NULL; |
| 2834 | |
|
46231
81ee270a6eb5
Merged revisions 62047 via svnmerge from
Neal Norwitz <nnorwitz@gmail.com>
parents:
46120
diff
changeset
|
2835 return ExceptHandler(expression, NULL, suite_seq, LINENO(exc), |
|
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
|
2836 exc->n_col_offset, c->c_arena); |
| 35742 | 2837 } |
| 2838 else if (NCH(exc) == 4) { | |
| 2839 asdl_seq *suite_seq; | |
| 2840 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
|
2841 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2842 if (!e) |
| 35742 | 2843 return NULL; |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2844 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2845 if (!expression) |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2846 return NULL; |
| 35742 | 2847 suite_seq = ast_for_suite(c, body); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2848 if (!suite_seq) |
| 35742 | 2849 return NULL; |
| 2850 | |
|
46231
81ee270a6eb5
Merged revisions 62047 via svnmerge from
Neal Norwitz <nnorwitz@gmail.com>
parents:
46120
diff
changeset
|
2851 return ExceptHandler(expression, e, suite_seq, LINENO(exc), |
|
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
|
2852 exc->n_col_offset, c->c_arena); |
| 35742 | 2853 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2854 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2855 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2856 "wrong number of children for 'except' clause: %d", |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2857 NCH(exc)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2858 return NULL; |
| 35742 | 2859 } |
| 2860 | |
| 2861 static stmt_ty | |
| 2862 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2863 { | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2864 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
|
2865 int n_except = (nch - 3)/3; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2866 asdl_seq *body, *orelse = NULL, *finally = NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2867 |
| 35742 | 2868 REQ(n, try_stmt); |
| 2869 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2870 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
|
2871 if (body == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2872 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2873 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2874 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
|
2875 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
|
2876 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
|
2877 /* 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
|
2878 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
|
2879 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
|
2880 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
|
2881 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
|
2882 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2883 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2884 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2885 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2886 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
|
2887 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
|
2888 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2889 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2890 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2891 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2892 /* 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
|
2893 otherwise it would have a type of except_clause */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2894 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
|
2895 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
|
2896 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2897 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2898 } |
| 35742 | 2899 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2900 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
|
2901 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2902 return NULL; |
| 2903 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2904 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2905 if (n_except > 0) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2906 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2907 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
|
2908 /* 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
|
2909 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
|
2910 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
|
2911 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2912 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2913 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
|
2914 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
|
2915 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
|
2916 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2917 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2918 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
|
2919 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2920 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2921 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
|
2922 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
|
2923 if (!finally) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2924 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
|
2925 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2926 /* 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
|
2927 TryFinally to emulate try ... except ... finally */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2928 body = asdl_seq_new(1, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2929 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2930 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2931 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
|
2932 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2933 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2934 /* 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
|
2935 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
|
2936 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2937 } |
| 2938 | |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2939 /* with_item: test ['as' expr] */ |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2940 static stmt_ty |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2941 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
|
2942 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2943 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2944 |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2945 REQ(n, with_item); |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2946 context_expr = ast_for_expr(c, CHILD(n, 0)); |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2947 if (NCH(n) == 3) { |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2948 optional_vars = ast_for_expr(c, CHILD(n, 2)); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
2949 |
|
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PEP 343 -- the with-statement.
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parents:
36686
diff
changeset
|
2950 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
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parents:
36686
diff
changeset
|
2951 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
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parents:
36686
diff
changeset
|
2952 } |
|
46664
031dfe455585
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|
2953 if (!set_context(c, optional_vars, Store, n)) { |
|
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|
2954 return NULL; |
|
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parents:
40215
diff
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|
2955 } |
|
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parents:
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diff
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|
2956 } |
|
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parents:
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|
2957 |
|
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|
2958 return With(context_expr, optional_vars, content, LINENO(n), |
|
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|
2959 n->n_col_offset, c->c_arena); |
|
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|
2960 } |
|
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|
2961 |
|
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|
2962 /* with_stmt: 'with' with_item (',' with_item)* ':' suite */ |
|
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|
2963 static stmt_ty |
|
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|
2964 ast_for_with_stmt(struct compiling *c, const node *n) |
|
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|
2965 { |
|
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|
2966 int i; |
|
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|
2967 stmt_ty ret; |
|
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|
2968 asdl_seq *inner; |
|
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|
2969 |
|
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|
2970 REQ(n, with_stmt); |
|
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|
2971 |
|
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|
2972 /* process the with items inside-out */ |
|
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|
2973 i = NCH(n) - 1; |
|
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|
2974 /* the suite of the innermost with item is the suite of the with stmt */ |
|
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|
2975 inner = ast_for_suite(c, CHILD(n, i)); |
|
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|
2976 if (!inner) |
|
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PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
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diff
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|
2977 return NULL; |
|
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|
2978 |
|
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|
2979 for (;;) { |
|
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|
2980 i -= 2; |
|
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|
2981 ret = ast_for_with_item(c, CHILD(n, i), inner); |
|
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|
2982 if (!ret) |
|
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|
2983 return NULL; |
|
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|
2984 /* was this the last item? */ |
|
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|
2985 if (i == 1) |
|
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|
2986 break; |
|
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changeset
|
2987 /* if not, wrap the result so far in a new sequence */ |
|
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changeset
|
2988 inner = asdl_seq_new(1, c->c_arena); |
|
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|
2989 if (!inner) |
|
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|
2990 return NULL; |
|
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|
2991 asdl_seq_SET(inner, 0, ret); |
|
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PEP 343 -- the with-statement.
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parents:
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diff
changeset
|
2992 } |
|
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|
2993 |
|
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|
2994 return ret; |
|
36695
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PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
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|
2995 } |
|
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PEP 343 -- the with-statement.
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parents:
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diff
changeset
|
2996 |
| 35742 | 2997 static stmt_ty |
|
41824
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|
2998 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 2999 { |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
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|
3000 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
49844
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|
3001 PyObject *classname; |
|
41226
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parents:
40965
diff
changeset
|
3002 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
|
3003 expr_ty call; |
|
41226
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parents:
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diff
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|
3004 |
| 35742 | 3005 REQ(n, classdef); |
| 3006 | |
|
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Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3007 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 3008 s = ast_for_suite(c, CHILD(n, 3)); |
| 3009 if (!s) | |
| 3010 return NULL; | |
|
49844
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|
3011 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3012 if (!classname) |
|
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|
3013 return NULL; |
|
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|
3014 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
|
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changeset
|
3015 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3016 } |
|
41226
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parents:
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diff
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|
3017 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3018 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
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diff
changeset
|
3019 s = ast_for_suite(c, CHILD(n,5)); |
|
cc992d75d5b3
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parents:
40215
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changeset
|
3020 if (!s) |
|
49844
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|
3021 return NULL; |
|
40b7277e665f
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changeset
|
3022 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3023 if (!classname) |
|
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|
3024 return NULL; |
|
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changeset
|
3025 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
|
40b7277e665f
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changeset
|
3026 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3027 } |
| 3028 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3029 /* class NAME '(' arglist ')' ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3030 /* build up a fake Call node so we can extract its pieces */ |
|
49852
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Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
3031 { |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
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parents:
49847
diff
changeset
|
3032 PyObject *dummy_name; |
|
30d01a5f517e
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parents:
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diff
changeset
|
3033 expr_ty dummy; |
|
30d01a5f517e
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parents:
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diff
changeset
|
3034 dummy_name = NEW_IDENTIFIER(CHILD(n, 1)); |
|
30d01a5f517e
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parents:
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diff
changeset
|
3035 if (!dummy_name) |
|
30d01a5f517e
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parents:
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diff
changeset
|
3036 return NULL; |
|
30d01a5f517e
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Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3037 dummy = Name(dummy_name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
30d01a5f517e
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Benjamin Peterson <benjamin@python.org>
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diff
changeset
|
3038 call = ast_for_call(c, CHILD(n, 3), dummy); |
|
30d01a5f517e
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diff
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|
3039 if (!call) |
|
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parents:
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diff
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|
3040 return NULL; |
|
30d01a5f517e
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parents:
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diff
changeset
|
3041 } |
| 35742 | 3042 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
|
3043 if (!s) |
| 35742 | 3044 return NULL; |
|
49844
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diff
changeset
|
3045 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
40b7277e665f
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|
3046 if (!classname) |
|
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changeset
|
3047 return NULL; |
|
41226
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|
3048 |
|
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changeset
|
3049 return ClassDef(classname, call->v.Call.args, call->v.Call.keywords, |
|
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Guido van Rossum <guido@python.org>
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changeset
|
3050 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
41824
24b60622b944
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changeset
|
3051 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3052 } |
| 3053 | |
| 3054 static stmt_ty | |
| 3055 ast_for_stmt(struct compiling *c, const node *n) | |
| 3056 { | |
| 3057 if (TYPE(n) == stmt) { | |
|
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diff
changeset
|
3058 assert(NCH(n) == 1); |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
3059 n = CHILD(n, 0); |
| 35742 | 3060 } |
| 3061 if (TYPE(n) == simple_stmt) { | |
|
40450
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40215
diff
changeset
|
3062 assert(num_stmts(n) == 1); |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3063 n = CHILD(n, 0); |
| 35742 | 3064 } |
| 3065 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
3066 n = CHILD(n, 0); |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3067 /* small_stmt: expr_stmt | del_stmt | pass_stmt | flow_stmt |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
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parents:
40941
diff
changeset
|
3068 | import_stmt | global_stmt | nonlocal_stmt | assert_stmt |
|
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|
3069 */ |
|
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Thomas Wouters <thomas@python.org>
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40215
diff
changeset
|
3070 switch (TYPE(n)) { |
| 35742 | 3071 case expr_stmt: |
| 3072 return ast_for_expr_stmt(c, n); | |
| 3073 case del_stmt: | |
| 3074 return ast_for_del_stmt(c, n); | |
| 3075 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
|
3076 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3077 case flow_stmt: |
| 3078 return ast_for_flow_stmt(c, n); | |
| 3079 case import_stmt: | |
| 3080 return ast_for_import_stmt(c, n); | |
| 3081 case global_stmt: | |
| 3082 return ast_for_global_stmt(c, n); | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3083 case nonlocal_stmt: |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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|
3084 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3085 case assert_stmt: |
| 3086 return ast_for_assert_stmt(c, n); | |
| 3087 default: | |
|
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f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
3088 PyErr_Format(PyExc_SystemError, |
| 35742 | 3089 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3090 TYPE(n), NCH(n)); | |
| 3091 return NULL; | |
| 3092 } | |
| 3093 } | |
| 3094 else { | |
| 3095 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
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|
3096 | funcdef | classdef | decorated |
|
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|
3097 */ |
|
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|
3098 node *ch = CHILD(n, 0); |
|
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|
3099 REQ(n, compound_stmt); |
|
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|
3100 switch (TYPE(ch)) { |
| 35742 | 3101 case if_stmt: |
| 3102 return ast_for_if_stmt(c, ch); | |
| 3103 case while_stmt: | |
| 3104 return ast_for_while_stmt(c, ch); | |
| 3105 case for_stmt: | |
| 3106 return ast_for_for_stmt(c, ch); | |
| 3107 case try_stmt: | |
| 3108 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
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|
3109 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
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|
3110 return ast_for_with_stmt(c, ch); |
| 35742 | 3111 case funcdef: |
|
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3112 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3113 case classdef: |
|
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3114 return ast_for_classdef(c, ch, NULL); |
|
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3115 case decorated: |
|
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3116 return ast_for_decorated(c, ch); |
| 35742 | 3117 default: |
|
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Neal Norwitz <nnorwitz@gmail.com>
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|
3118 PyErr_Format(PyExc_SystemError, |
| 35742 | 3119 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3120 TYPE(n), NCH(n)); | |
| 3121 return NULL; | |
|
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3122 } |
| 35742 | 3123 } |
| 3124 } | |
| 3125 | |
| 3126 static PyObject * | |
|
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3127 parsenumber(struct compiling *c, const char *s) |
| 35742 | 3128 { |
|
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3129 const char *end; |
|
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3130 long x; |
|
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3131 double dx; |
| 35742 | 3132 #ifndef WITHOUT_COMPLEX |
|
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|
3133 Py_complex compl; |
|
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3134 int imflag; |
| 35742 | 3135 #endif |
| 3136 | |
|
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3137 assert(s != NULL); |
|
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3138 errno = 0; |
|
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3139 end = s + strlen(s) - 1; |
| 35742 | 3140 #ifndef WITHOUT_COMPLEX |
|
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3141 imflag = *end == 'j' || *end == 'J'; |
| 35742 | 3142 #endif |
|
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|
3143 if (s[0] == '0') { |
|
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3144 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
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|
3145 if (x < 0 && errno == 0) { |
|
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|
3146 return PyLong_FromString((char *)s, |
|
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|
3147 (char **)0, |
|
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|
3148 0); |
|
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|
3149 } |
|
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3150 } |
|
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3151 else |
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3152 x = PyOS_strtol((char *)s, (char **)&end, 0); |
|
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|
3153 if (*end == '\0') { |
|
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|
3154 if (errno != 0) |
|
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|
3155 return PyLong_FromString((char *)s, (char **)0, 0); |
|
44099
f324631462a2
Cleanup: Replaced most PyInt_ aliases with PyLong_ and disabled the aliases in intobject.h
Christian Heimes <christian@cheimes.de>
parents:
44025
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|
3156 return PyLong_FromLong(x); |
|
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|
3157 } |
|
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|
3158 /* XXX Huge floats may silently fail */ |
| 35742 | 3159 #ifndef WITHOUT_COMPLEX |
|
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3160 if (imflag) { |
|
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|
3161 compl.real = 0.; |
|
53707
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Mark Dickinson <dickinsm@gmail.com>
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|
3162 compl.imag = PyOS_string_to_double(s, (char **)&end, NULL); |
|
13a82a710f19
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|
3163 if (compl.imag == -1.0 && PyErr_Occurred()) |
|
13a82a710f19
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|
3164 return NULL; |
|
13a82a710f19
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Mark Dickinson <dickinsm@gmail.com>
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|
3165 return PyComplex_FromCComplex(compl); |
|
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3166 } |
|
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|
3167 else |
| 35742 | 3168 #endif |
|
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|
3169 { |
|
53707
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|
3170 dx = PyOS_string_to_double(s, NULL, NULL); |
|
13a82a710f19
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|
3171 if (dx == -1.0 && PyErr_Occurred()) |
|
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|
3172 return NULL; |
|
13a82a710f19
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Mark Dickinson <dickinsm@gmail.com>
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|
3173 return PyFloat_FromDouble(dx); |
|
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|
3174 } |
| 35742 | 3175 } |
| 3176 | |
| 3177 static PyObject * | |
|
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|
3178 decode_utf8(struct compiling *c, const char **sPtr, const char *end, char* encoding) |
| 35742 | 3179 { |
|
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|
3180 PyObject *u, *v; |
|
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|
3181 char *s, *t; |
|
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|
3182 t = s = (char *)*sPtr; |
|
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|
3183 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
|
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|
3184 while (s < end && (*s & 0x80)) s++; |
|
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|
3185 *sPtr = s; |
|
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|
3186 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
|
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|
3187 if (u == NULL) |
|
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|
3188 return NULL; |
|
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|
3189 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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|
3190 Py_DECREF(u); |
|
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|
3191 return v; |
| 35742 | 3192 } |
| 3193 | |
| 3194 static PyObject * | |
|
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3195 decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, const char *encoding) |
| 35742 | 3196 { |
|
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3197 PyObject *v, *u; |
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|
3198 char *buf; |
|
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|
3199 char *p; |
|
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3200 const char *end; |
|
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|
3201 |
|
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3202 if (encoding == NULL) { |
|
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3203 buf = (char *)s; |
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3204 u = NULL; |
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3205 } else { |
|
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3206 /* check for integer overflow */ |
|
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3207 if (len > PY_SIZE_MAX / 4) |
|
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3208 return NULL; |
|
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3209 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ |
|
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3210 u = PyBytes_FromStringAndSize((char *)NULL, len * 4); |
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3211 if (u == NULL) |
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3212 return NULL; |
|
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3213 p = buf = PyBytes_AsString(u); |
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3214 end = s + len; |
|
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|
3215 while (s < end) { |
|
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|
3216 if (*s == '\\') { |
|
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|
3217 *p++ = *s++; |
|
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|
3218 if (*s & 0x80) { |
|
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|
3219 strcpy(p, "u005c"); |
|
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|
3220 p += 5; |
|
40450
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|
3221 } |
|
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|
3222 } |
|
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|
3223 if (*s & 0x80) { /* XXX inefficient */ |
|
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|
3224 PyObject *w; |
|
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|
3225 char *r; |
|
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|
3226 Py_ssize_t rn, i; |
|
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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|
3227 w = decode_utf8(c, &s, end, "utf-16-be"); |
|
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|
3228 if (w == NULL) { |
|
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|
3229 Py_DECREF(u); |
|
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|
3230 return NULL; |
|
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|
3231 } |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
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|
3232 r = PyBytes_AS_STRING(w); |
|
44351
86a2679dca46
#1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT.
Christian Heimes <christian@cheimes.de>
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|
3233 rn = Py_SIZE(w); |
|
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|
3234 assert(rn % 2 == 0); |
|
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3235 for (i = 0; i < rn; i += 2) { |
|
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|
3236 sprintf(p, "\\u%02x%02x", |
|
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|
3237 r[i + 0] & 0xFF, |
|
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|
3238 r[i + 1] & 0xFF); |
|
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3239 p += 6; |
|
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3240 } |
|
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|
3241 Py_DECREF(w); |
|
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3242 } else { |
|
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|
3243 *p++ = *s++; |
|
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|
3244 } |
|
40450
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|
3245 } |
|
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3246 len = p - buf; |
|
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|
3247 s = buf; |
|
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|
3248 } |
|
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|
3249 if (rawmode) |
|
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|
3250 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
|
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|
3251 else |
|
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|
3252 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
|
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|
3253 Py_XDECREF(u); |
|
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|
3254 return v; |
| 35742 | 3255 } |
| 3256 | |
| 3257 /* s is a Python string literal, including the bracketing quote characters, | |
|
43777
0d462d789b18
Merging the py3k-pep3137 branch back into the py3k branch.
Guido van Rossum <guido@python.org>
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changeset
|
3258 * and r &/or b prefixes (if any), and embedded escape sequences (if any). |
| 35742 | 3259 * parsestr parses it, and returns the decoded Python string object. |
| 3260 */ | |
| 3261 static PyObject * | |
|
46120
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|
3262 parsestr(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3263 { |
|
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|
3264 size_t len; |
|
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|
3265 const char *s = STR(n); |
|
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|
3266 int quote = Py_CHARMASK(*s); |
|
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|
3267 int rawmode = 0; |
|
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|
3268 int need_encoding; |
|
43777
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Merging the py3k-pep3137 branch back into the py3k branch.
Guido van Rossum <guido@python.org>
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|
3269 if (isalpha(quote)) { |
|
41554
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|
3270 if (quote == 'b' || quote == 'B') { |
|
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|
3271 quote = *++s; |
|
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|
3272 *bytesmode = 1; |
|
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|
3273 } |
|
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|
3274 if (quote == 'r' || quote == 'R') { |
|
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|
3275 quote = *++s; |
|
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|
3276 rawmode = 1; |
|
40450
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|
3277 } |
|
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|
3278 } |
|
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|
3279 if (quote != '\'' && quote != '\"') { |
|
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|
3280 PyErr_BadInternalCall(); |
|
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|
3281 return NULL; |
|
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|
3282 } |
|
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|
3283 s++; |
|
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|
3284 len = strlen(s); |
|
06145fbc7ab9
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|
3285 if (len > INT_MAX) { |
|
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|
3286 PyErr_SetString(PyExc_OverflowError, |
|
06145fbc7ab9
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|
3287 "string to parse is too long"); |
|
06145fbc7ab9
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|
3288 return NULL; |
|
06145fbc7ab9
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|
3289 } |
|
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|
3290 if (s[--len] != quote) { |
|
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|
3291 PyErr_BadInternalCall(); |
|
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|
3292 return NULL; |
|
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|
3293 } |
|
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|
3294 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
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|
3295 s += 2; |
|
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|
3296 len -= 2; |
|
06145fbc7ab9
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|
3297 if (s[--len] != quote || s[--len] != quote) { |
|
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|
3298 PyErr_BadInternalCall(); |
|
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|
3299 return NULL; |
| 40894 | 3300 } |
|
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|
3301 } |
|
46306
b10292eafb07
Reverted r62128 on Guido's orders
Benjamin Peterson <benjamin@python.org>
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changeset
|
3302 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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|
3303 return decode_unicode(c, s, len, rawmode, c->c_encoding); |
|
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|
3304 } |
|
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|
3305 if (*bytesmode) { |
|
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|
3306 /* Disallow non-ascii characters (but not escapes) */ |
|
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|
3307 const char *c; |
|
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|
3308 for (c = s; *c; c++) { |
|
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|
3309 if (Py_CHARMASK(*c) >= 0x80) { |
|
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|
3310 ast_error(n, "bytes can only contain ASCII " |
|
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|
3311 "literal characters."); |
|
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|
3312 return NULL; |
|
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|
3313 } |
|
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|
3314 } |
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|
3315 } |
|
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|
3316 need_encoding = (!*bytesmode && c->c_encoding != NULL && |
|
49539
481ad3d9ffd1
Latin-1 source code was not being properly decoded when passed through
Brett Cannon <bcannon@gmail.com>
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|
3317 strcmp(c->c_encoding, "utf-8") != 0); |
|
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|
3318 if (rawmode || strchr(s, '\\') == NULL) { |
|
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|
3319 if (need_encoding) { |
|
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|
3320 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
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changeset
|
3321 if (u == NULL || !*bytesmode) |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
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|
3322 return u; |
|
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|
3323 v = PyUnicode_AsEncodedString(u, c->c_encoding, NULL); |
|
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|
3324 Py_DECREF(u); |
|
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3325 return v; |
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3326 } else if (*bytesmode) { |
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3327 return PyBytes_FromStringAndSize(s, len); |
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3328 } else if (strcmp(c->c_encoding, "utf-8") == 0) { |
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3329 return PyUnicode_FromStringAndSize(s, len); |
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3330 } else { |
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3331 return PyUnicode_DecodeLatin1(s, len, NULL); |
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3332 } |
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3333 } |
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3334 return PyBytes_DecodeEscape(s, len, NULL, 1, |
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3335 need_encoding ? c->c_encoding : NULL); |
| 35742 | 3336 } |
| 3337 | |
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|
3338 /* Build a Python string object out of a STRING+ atom. This takes care of |
| 35742 | 3339 * compile-time literal catenation, calling parsestr() on each piece, and |
| 3340 * pasting the intermediate results together. | |
| 3341 */ | |
| 3342 static PyObject * | |
| 40894 | 3343 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3344 { |
|
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3345 PyObject *v; |
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3346 int i; |
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3347 REQ(CHILD(n, 0), STRING); |
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3348 v = parsestr(c, CHILD(n, 0), bytesmode); |
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3349 if (v != NULL) { |
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3350 /* String literal concatenation */ |
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3351 for (i = 1; i < NCH(n); i++) { |
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3352 PyObject *s; |
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3353 int subbm = 0; |
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3354 s = parsestr(c, CHILD(n, i), &subbm); |
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3355 if (s == NULL) |
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3356 goto onError; |
|
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3357 if (*bytesmode != subbm) { |
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3358 ast_error(n, "cannot mix bytes and nonbytes literals"); |
|
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3359 goto onError; |
|
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3360 } |
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3361 if (PyBytes_Check(v) && PyBytes_Check(s)) { |
|
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3362 PyBytes_ConcatAndDel(&v, s); |
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3363 if (v == NULL) |
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3364 goto onError; |
|
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3365 } |
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3366 else { |
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3367 PyObject *temp = PyUnicode_Concat(v, s); |
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3368 Py_DECREF(s); |
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3369 Py_DECREF(v); |
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3370 v = temp; |
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3371 if (v == NULL) |
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3372 goto onError; |
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3373 } |
|
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|
3374 } |
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3375 } |
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3376 return v; |
| 35742 | 3377 |
|
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3378 onError: |
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3379 Py_XDECREF(v); |
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3380 return NULL; |
| 35742 | 3381 } |