Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 64633:e080f11fca19
use Py_REFCNT
| author | Benjamin Peterson <benjamin@python.org> |
|---|---|
| date | Fri, 10 Sep 2010 23:52:42 +0000 |
| parents | c18eeb969102 |
| children | 861c35cef7aa |
| 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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parents:
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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 { | |
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229 /* PEP 3120 */ |
| 42403 | 230 c.c_encoding = "utf-8"; |
| 35742 | 231 } |
|
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232 c.c_arena = arena; |
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233 c.c_filename = filename; |
| 35742 | 234 |
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235 k = 0; |
| 35742 | 236 switch (TYPE(n)) { |
| 237 case file_input: | |
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238 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 239 if (!stmts) |
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240 return NULL; |
| 35742 | 241 for (i = 0; i < NCH(n) - 1; i++) { |
| 242 ch = CHILD(n, i); | |
| 243 if (TYPE(ch) == NEWLINE) | |
| 244 continue; | |
| 245 REQ(ch, stmt); | |
| 246 num = num_stmts(ch); | |
| 247 if (num == 1) { | |
| 248 s = ast_for_stmt(&c, ch); | |
| 249 if (!s) | |
| 250 goto error; | |
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251 asdl_seq_SET(stmts, k++, s); |
| 35742 | 252 } |
| 253 else { | |
| 254 ch = CHILD(ch, 0); | |
| 255 REQ(ch, simple_stmt); | |
| 256 for (j = 0; j < num; j++) { | |
| 257 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 258 if (!s) | |
| 259 goto error; | |
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260 asdl_seq_SET(stmts, k++, s); |
| 35742 | 261 } |
| 262 } | |
| 263 } | |
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264 return Module(stmts, arena); |
| 35742 | 265 case eval_input: { |
| 266 expr_ty testlist_ast; | |
| 267 | |
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268 /* XXX Why not comp_for here? */ |
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269 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 270 if (!testlist_ast) |
| 271 goto error; | |
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272 return Expression(testlist_ast, arena); |
| 35742 | 273 } |
| 274 case single_input: | |
| 275 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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276 stmts = asdl_seq_new(1, arena); |
| 35742 | 277 if (!stmts) |
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278 goto error; |
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279 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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280 arena)); |
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281 if (!asdl_seq_GET(stmts, 0)) |
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282 goto error; |
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283 return Interactive(stmts, arena); |
| 35742 | 284 } |
| 285 else { | |
| 286 n = CHILD(n, 0); | |
| 287 num = num_stmts(n); | |
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288 stmts = asdl_seq_new(num, arena); |
| 35742 | 289 if (!stmts) |
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290 goto error; |
| 35742 | 291 if (num == 1) { |
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292 s = ast_for_stmt(&c, n); |
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293 if (!s) |
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294 goto error; |
| 35742 | 295 asdl_seq_SET(stmts, 0, s); |
| 296 } | |
| 297 else { | |
| 298 /* Only a simple_stmt can contain multiple statements. */ | |
| 299 REQ(n, simple_stmt); | |
| 300 for (i = 0; i < NCH(n); i += 2) { | |
| 301 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 302 break; | |
| 303 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 304 if (!s) | |
| 305 goto error; | |
| 306 asdl_seq_SET(stmts, i / 2, s); | |
| 307 } | |
| 308 } | |
| 309 | |
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310 return Interactive(stmts, arena); |
| 35742 | 311 } |
| 312 default: | |
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313 PyErr_Format(PyExc_SystemError, |
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314 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 315 goto error; |
| 316 } | |
| 317 error: | |
| 318 ast_error_finish(filename); | |
| 319 return NULL; | |
| 320 } | |
| 321 | |
| 322 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 323 */ | |
| 324 | |
| 325 static operator_ty | |
| 326 get_operator(const node *n) | |
| 327 { | |
| 328 switch (TYPE(n)) { | |
| 329 case VBAR: | |
| 330 return BitOr; | |
| 331 case CIRCUMFLEX: | |
| 332 return BitXor; | |
| 333 case AMPER: | |
| 334 return BitAnd; | |
| 335 case LEFTSHIFT: | |
| 336 return LShift; | |
| 337 case RIGHTSHIFT: | |
| 338 return RShift; | |
| 339 case PLUS: | |
| 340 return Add; | |
| 341 case MINUS: | |
| 342 return Sub; | |
| 343 case STAR: | |
| 344 return Mult; | |
| 345 case SLASH: | |
| 346 return Div; | |
| 347 case DOUBLESLASH: | |
| 348 return FloorDiv; | |
| 349 case PERCENT: | |
| 350 return Mod; | |
| 351 default: | |
|
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352 return (operator_ty)0; |
| 35742 | 353 } |
| 354 } | |
| 355 | |
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356 static const char* FORBIDDEN[] = { |
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357 "None", |
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358 "True", |
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359 "False", |
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360 NULL, |
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361 }; |
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362 |
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363 static int |
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364 forbidden_name(identifier name, const node *n, int full_checks) |
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365 { |
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366 assert(PyUnicode_Check(name)); |
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367 if (PyUnicode_CompareWithASCIIString(name, "__debug__") == 0) { |
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368 ast_error(n, "assignment to keyword"); |
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369 return 1; |
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370 } |
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371 if (full_checks) { |
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372 const char **p; |
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373 for (p = FORBIDDEN; *p; p++) { |
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374 if (PyUnicode_CompareWithASCIIString(name, *p) == 0) { |
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375 ast_error(n, "assignment to keyword"); |
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376 return 1; |
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377 } |
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378 } |
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379 } |
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380 return 0; |
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381 } |
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382 |
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383 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 384 |
| 385 Only sets context for expr kinds that "can appear in assignment context" | |
| 386 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 387 an appropriate syntax error and returns false. | |
| 388 */ | |
| 389 | |
| 390 static int | |
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391 set_context(struct compiling *c, expr_ty e, expr_context_ty ctx, const node *n) |
| 35742 | 392 { |
| 393 asdl_seq *s = NULL; | |
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394 /* If a particular expression type can't be used for assign / delete, |
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395 set expr_name to its name and an error message will be generated. |
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396 */ |
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397 const char* expr_name = NULL; |
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398 |
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399 /* The ast defines augmented store and load contexts, but the |
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400 implementation here doesn't actually use them. The code may be |
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401 a little more complex than necessary as a result. It also means |
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402 that expressions in an augmented assignment have a Store context. |
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403 Consider restructuring so that augmented assignment uses |
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404 set_context(), too. |
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405 */ |
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406 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 407 |
| 408 switch (e->kind) { | |
| 409 case Attribute_kind: | |
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410 e->v.Attribute.ctx = ctx; |
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411 if (ctx == Store && forbidden_name(e->v.Attribute.attr, n, 1)) |
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412 return 0; |
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413 break; |
| 35742 | 414 case Subscript_kind: |
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415 e->v.Subscript.ctx = ctx; |
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416 break; |
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417 case Starred_kind: |
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418 e->v.Starred.ctx = ctx; |
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419 if (!set_context(c, e->v.Starred.value, ctx, n)) |
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420 return 0; |
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421 break; |
| 35742 | 422 case Name_kind: |
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423 if (ctx == Store) { |
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424 if (forbidden_name(e->v.Name.id, n, 1)) |
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425 return 0; /* forbidden_name() calls ast_error() */ |
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426 } |
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427 e->v.Name.ctx = ctx; |
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430 e->v.List.ctx = ctx; |
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431 s = e->v.List.elts; |
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432 break; |
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434 if (asdl_seq_LEN(e->v.Tuple.elts)) { |
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435 e->v.Tuple.ctx = ctx; |
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436 s = e->v.Tuple.elts; |
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437 } |
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438 else { |
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439 expr_name = "()"; |
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440 } |
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442 case Lambda_kind: |
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443 expr_name = "lambda"; |
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444 break; |
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446 expr_name = "function call"; |
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447 break; |
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448 case BoolOp_kind: |
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450 case UnaryOp_kind: |
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451 expr_name = "operator"; |
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452 break; |
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454 expr_name = "generator expression"; |
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455 break; |
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456 case Yield_kind: |
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457 expr_name = "yield expression"; |
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458 break; |
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459 case ListComp_kind: |
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460 expr_name = "list comprehension"; |
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461 break; |
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462 case SetComp_kind: |
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463 expr_name = "set comprehension"; |
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464 break; |
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465 case DictComp_kind: |
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466 expr_name = "dict comprehension"; |
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468 case Dict_kind: |
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469 case Set_kind: |
| 35742 | 470 case Num_kind: |
| 471 case Str_kind: | |
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472 expr_name = "literal"; |
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473 break; |
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474 case Ellipsis_kind: |
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475 expr_name = "Ellipsis"; |
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476 break; |
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477 case Compare_kind: |
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478 expr_name = "comparison"; |
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479 break; |
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480 case IfExp_kind: |
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481 expr_name = "conditional expression"; |
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482 break; |
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483 default: |
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484 PyErr_Format(PyExc_SystemError, |
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485 "unexpected expression in assignment %d (line %d)", |
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486 e->kind, e->lineno); |
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487 return 0; |
| 35742 | 488 } |
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489 /* Check for error string set by switch */ |
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490 if (expr_name) { |
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491 char buf[300]; |
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492 PyOS_snprintf(buf, sizeof(buf), |
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493 "can't %s %s", |
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494 ctx == Store ? "assign to" : "delete", |
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495 expr_name); |
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496 return ast_error(n, buf); |
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497 } |
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498 |
| 35742 | 499 /* If the LHS is a list or tuple, we need to set the assignment |
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500 context for all the contained elements. |
| 35742 | 501 */ |
| 502 if (s) { | |
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503 int i; |
| 35742 | 504 |
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505 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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506 if (!set_context(c, (expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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507 return 0; |
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508 } |
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| 510 return 1; | |
| 511 } | |
| 512 | |
| 513 static operator_ty | |
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514 ast_for_augassign(struct compiling *c, const node *n) |
| 35742 | 515 { |
| 516 REQ(n, augassign); | |
| 517 n = CHILD(n, 0); | |
| 518 switch (STR(n)[0]) { | |
| 519 case '+': | |
| 520 return Add; | |
| 521 case '-': | |
| 522 return Sub; | |
| 523 case '/': | |
| 524 if (STR(n)[1] == '/') | |
| 525 return FloorDiv; | |
| 526 else | |
| 527 return Div; | |
| 528 case '%': | |
| 529 return Mod; | |
| 530 case '<': | |
| 531 return LShift; | |
| 532 case '>': | |
| 533 return RShift; | |
| 534 case '&': | |
| 535 return BitAnd; | |
| 536 case '^': | |
| 537 return BitXor; | |
| 538 case '|': | |
| 539 return BitOr; | |
| 540 case '*': | |
| 541 if (STR(n)[1] == '*') | |
| 542 return Pow; | |
| 543 else | |
| 544 return Mult; | |
| 545 default: | |
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546 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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547 return (operator_ty)0; |
| 35742 | 548 } |
| 549 } | |
| 550 | |
| 551 static cmpop_ty | |
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552 ast_for_comp_op(struct compiling *c, const node *n) |
| 35742 | 553 { |
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554 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 555 |'is' 'not' |
| 556 */ | |
| 557 REQ(n, comp_op); | |
| 558 if (NCH(n) == 1) { | |
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559 n = CHILD(n, 0); |
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560 switch (TYPE(n)) { |
| 35742 | 561 case LESS: |
| 562 return Lt; | |
| 563 case GREATER: | |
| 564 return Gt; | |
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565 case EQEQUAL: /* == */ |
| 35742 | 566 return Eq; |
| 567 case LESSEQUAL: | |
| 568 return LtE; | |
| 569 case GREATEREQUAL: | |
| 570 return GtE; | |
| 571 case NOTEQUAL: | |
| 572 return NotEq; | |
| 573 case NAME: | |
| 574 if (strcmp(STR(n), "in") == 0) | |
| 575 return In; | |
| 576 if (strcmp(STR(n), "is") == 0) | |
| 577 return Is; | |
| 578 default: | |
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579 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 580 STR(n)); |
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581 return (cmpop_ty)0; |
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582 } |
| 35742 | 583 } |
| 584 else if (NCH(n) == 2) { | |
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585 /* handle "not in" and "is not" */ |
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586 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 587 case NAME: |
| 588 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 589 return NotIn; | |
| 590 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 591 return IsNot; | |
| 592 default: | |
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593 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 594 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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595 return (cmpop_ty)0; |
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596 } |
| 35742 | 597 } |
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598 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 599 NCH(n)); |
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600 return (cmpop_ty)0; |
| 35742 | 601 } |
| 602 | |
| 603 static asdl_seq * | |
| 604 seq_for_testlist(struct compiling *c, const node *n) | |
| 605 { | |
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606 /* testlist: test (',' test)* [','] |
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607 testlist_star_expr: test|star_expr (',' test|star_expr)* [','] |
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608 */ |
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609 asdl_seq *seq; |
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610 expr_ty expression; |
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611 int i; |
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612 assert(TYPE(n) == testlist || TYPE(n) == testlist_star_expr || TYPE(n) == testlist_comp); |
| 35742 | 613 |
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614 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 615 if (!seq) |
| 616 return NULL; | |
| 617 | |
| 618 for (i = 0; i < NCH(n); i += 2) { | |
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619 const node *ch = CHILD(n, i); |
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620 assert(TYPE(ch) == test || TYPE(ch) == test_nocond || TYPE(ch) == star_expr); |
| 35742 | 621 |
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622 expression = ast_for_expr(c, ch); |
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623 if (!expression) |
| 35742 | 624 return NULL; |
| 625 | |
| 626 assert(i / 2 < seq->size); | |
| 627 asdl_seq_SET(seq, i / 2, expression); | |
| 628 } | |
| 629 return seq; | |
| 630 } | |
| 631 | |
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632 static arg_ty |
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633 compiler_arg(struct compiling *c, const node *n) |
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634 { |
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635 identifier name; |
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636 expr_ty annotation = NULL; |
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637 node *ch; |
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638 |
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639 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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640 ch = CHILD(n, 0); |
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641 name = NEW_IDENTIFIER(ch); |
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642 if (!name) |
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643 return NULL; |
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644 if (forbidden_name(name, ch, 0)) |
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645 return NULL; |
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646 |
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647 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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648 annotation = ast_for_expr(c, CHILD(n, 2)); |
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649 if (!annotation) |
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650 return NULL; |
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651 } |
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652 |
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653 return arg(name, annotation, c->c_arena); |
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654 #if 0 |
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655 result = Tuple(args, Store, LINENO(n), n->n_col_offset, c->c_arena); |
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656 if (!set_context(c, result, Store, n)) |
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657 return NULL; |
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658 return result; |
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659 #endif |
| 35742 | 660 } |
| 661 | |
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662 /* returns -1 if failed to handle keyword only arguments |
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663 returns new position to keep processing if successful |
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664 (',' tfpdef ['=' test])* |
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665 ^^^ |
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666 start pointing here |
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667 */ |
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668 static int |
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669 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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670 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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671 { |
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672 PyObject *argname; |
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673 node *ch; |
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674 expr_ty expression, annotation; |
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675 arg_ty arg; |
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676 int i = start; |
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677 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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678 |
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679 if (kwonlyargs == NULL) { |
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680 ast_error(CHILD(n, start), "named arguments must follow bare *"); |
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681 return -1; |
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682 } |
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683 assert(kwdefaults != NULL); |
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684 while (i < NCH(n)) { |
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685 ch = CHILD(n, i); |
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686 switch (TYPE(ch)) { |
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687 case vfpdef: |
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688 case tfpdef: |
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689 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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690 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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691 if (!expression) |
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692 goto error; |
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693 asdl_seq_SET(kwdefaults, j, expression); |
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694 i += 2; /* '=' and test */ |
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695 } |
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696 else { /* setting NULL if no default value exists */ |
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697 asdl_seq_SET(kwdefaults, j, NULL); |
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698 } |
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699 if (NCH(ch) == 3) { |
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700 /* ch is NAME ':' test */ |
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701 annotation = ast_for_expr(c, CHILD(ch, 2)); |
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702 if (!annotation) |
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703 goto error; |
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704 } |
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705 else { |
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706 annotation = NULL; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
707 } |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
708 ch = CHILD(ch, 0); |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
709 argname = NEW_IDENTIFIER(ch); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
710 if (!argname) |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
711 goto error; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
712 if (forbidden_name(argname, ch, 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
713 goto error; |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
714 arg = arg(argname, annotation, c->c_arena); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
715 if (!arg) |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
716 goto error; |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
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parents:
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changeset
|
717 asdl_seq_SET(kwonlyargs, j++, arg); |
|
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|
718 i += 2; /* the name and the comma */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
719 break; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
720 case DOUBLESTAR: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
721 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
722 default: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
723 ast_error(ch, "unexpected node"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
724 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
725 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
726 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
727 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
728 error: |
|
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changeset
|
729 return -1; |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
730 } |
| 35742 | 731 |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
732 /* Create AST for argument list. */ |
| 35742 | 733 |
| 734 static arguments_ty | |
| 735 ast_for_arguments(struct compiling *c, const node *n) | |
| 736 { | |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
737 /* This function handles both typedargslist (function definition) |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
738 and varargslist (lambda definition). |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
739 |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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changeset
|
740 parameters: '(' [typedargslist] ')' |
|
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changeset
|
741 typedargslist: ((tfpdef ['=' test] ',')* |
|
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|
742 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
|
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|
743 | '**' tfpdef) |
|
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parents:
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|
744 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
|
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|
745 tfpdef: NAME [':' test] |
|
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parents:
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diff
changeset
|
746 varargslist: ((vfpdef ['=' test] ',')* |
|
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|
747 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
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changeset
|
748 | '**' vfpdef) |
|
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parents:
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|
749 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
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parents:
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changeset
|
750 vfpdef: NAME |
| 35742 | 751 */ |
|
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Jiwon Seo's PEP 3102 implementation.
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changeset
|
752 int i, j, k, nposargs = 0, nkwonlyargs = 0; |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
753 int nposdefaults = 0, found_default = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
754 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 755 identifier vararg = NULL, kwarg = NULL; |
|
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parents:
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diff
changeset
|
756 arg_ty arg; |
|
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parents:
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diff
changeset
|
757 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 758 node *ch; |
| 759 | |
| 760 if (TYPE(n) == parameters) { | |
|
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parents:
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changeset
|
761 if (NCH(n) == 2) /* () as argument list */ |
|
40529
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
762 return arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
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|
763 NULL, c->c_arena); |
|
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parents:
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|
764 n = CHILD(n, 1); |
| 35742 | 765 } |
|
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parents:
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changeset
|
766 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 767 |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
768 /* First count the number of positional args & defaults. The |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
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parents:
48397
diff
changeset
|
769 variable i is the loop index for this for loop and the next. |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
770 The next loop picks up where the first leaves off. |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
771 */ |
| 35742 | 772 for (i = 0; i < NCH(n); i++) { |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
773 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
774 if (TYPE(ch) == STAR) { |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
775 /* skip star */ |
|
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|
776 i++; |
|
48515
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Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
777 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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diff
changeset
|
778 (TYPE(CHILD(n, i)) == tfpdef || |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
779 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
|
780 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
|
781 } |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
782 break; |
|
40215
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parents:
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diff
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|
783 } |
|
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
784 if (TYPE(ch) == DOUBLESTAR) break; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
785 if (TYPE(ch) == vfpdef || TYPE(ch) == tfpdef) nposargs++; |
|
40215
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
786 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
787 } |
|
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cab14be0ada1
Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
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diff
changeset
|
788 /* count the number of keyword only args & |
|
40215
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
789 defaults for keyword only args */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
790 for ( ; i < NCH(n); ++i) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
791 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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changeset
|
792 if (TYPE(ch) == DOUBLESTAR) break; |
|
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changeset
|
793 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 794 } |
|
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parents:
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diff
changeset
|
795 posargs = (nposargs ? asdl_seq_new(nposargs, c->c_arena) : NULL); |
|
1cce0526d9b0
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Guido van Rossum <guido@python.org>
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diff
changeset
|
796 if (!posargs && nposargs) |
|
64178
5fd26f452600
Check the return values for all functions returning an ast node.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
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diff
changeset
|
797 return NULL; |
|
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|
798 kwonlyargs = (nkwonlyargs ? |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
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diff
changeset
|
799 asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); |
|
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parents:
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diff
changeset
|
800 if (!kwonlyargs && nkwonlyargs) |
|
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Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
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diff
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|
801 return NULL; |
|
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|
802 posdefaults = (nposdefaults ? |
|
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Jiwon Seo's PEP 3102 implementation.
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|
803 asdl_seq_new(nposdefaults, c->c_arena) : NULL); |
|
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|
804 if (!posdefaults && nposdefaults) |
|
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parents:
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|
805 return NULL; |
|
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|
806 /* The length of kwonlyargs and kwdefaults are same |
|
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|
807 since we set NULL as default for keyword only argument w/o default |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
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|
808 - we have sequence data structure, but no dictionary */ |
|
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parents:
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|
809 kwdefaults = (nkwonlyargs ? |
|
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|
810 asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); |
|
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changeset
|
811 if (!kwdefaults && nkwonlyargs) |
|
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|
812 return NULL; |
|
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|
813 |
|
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parents:
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changeset
|
814 if (nposargs + nkwonlyargs > 255) { |
|
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parents:
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diff
changeset
|
815 ast_error(n, "more than 255 arguments"); |
|
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parents:
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diff
changeset
|
816 return NULL; |
|
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|
817 } |
| 35742 | 818 |
|
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|
819 /* tfpdef: NAME [':' test] |
|
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|
820 vfpdef: NAME |
| 35742 | 821 */ |
| 822 i = 0; | |
|
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|
823 j = 0; /* index for defaults */ |
|
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|
824 k = 0; /* index for args */ |
| 35742 | 825 while (i < NCH(n)) { |
|
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826 ch = CHILD(n, i); |
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827 switch (TYPE(ch)) { |
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828 case tfpdef: |
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829 case vfpdef: |
| 35742 | 830 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 831 anything other than EQUAL or a comma? */ | |
| 832 /* XXX Should NCH(n) check be made a separate check? */ | |
| 833 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { | |
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834 expr_ty expression = ast_for_expr(c, CHILD(n, i + 2)); |
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835 if (!expression) |
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836 return NULL; |
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837 assert(posdefaults != NULL); |
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838 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 839 i += 2; |
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840 found_default = 1; |
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841 } |
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842 else if (found_default) { |
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843 ast_error(n, |
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844 "non-default argument follows default argument"); |
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845 return NULL; |
| 35742 | 846 } |
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847 arg = compiler_arg(c, ch); |
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848 if (!arg) |
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849 return NULL; |
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850 asdl_seq_SET(posargs, k++, arg); |
| 35742 | 851 i += 2; /* the name and the comma */ |
| 852 break; | |
| 853 case STAR: | |
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854 if (i+1 >= NCH(n)) { |
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855 ast_error(CHILD(n, i), |
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856 "named arguments must follow bare *"); |
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857 return NULL; |
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858 } |
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859 ch = CHILD(n, i+1); /* tfpdef or COMMA */ |
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860 if (TYPE(ch) == COMMA) { |
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861 int res = 0; |
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862 i += 2; /* now follows keyword only arguments */ |
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863 res = handle_keywordonly_args(c, n, i, |
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864 kwonlyargs, kwdefaults); |
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865 if (res == -1) return NULL; |
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866 i = res; /* res has new position to process */ |
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867 } |
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868 else { |
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869 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
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870 if (!vararg) |
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871 return NULL; |
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872 if (forbidden_name(vararg, CHILD(ch, 0), 0)) |
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873 return NULL; |
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874 if (NCH(ch) > 1) { |
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875 /* there is an annotation on the vararg */ |
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876 varargannotation = ast_for_expr(c, CHILD(ch, 2)); |
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877 if (!varargannotation) |
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878 return NULL; |
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879 } |
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880 i += 3; |
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881 if (i < NCH(n) && (TYPE(CHILD(n, i)) == tfpdef |
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882 || TYPE(CHILD(n, i)) == vfpdef)) { |
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883 int res = 0; |
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884 res = handle_keywordonly_args(c, n, i, |
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885 kwonlyargs, kwdefaults); |
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886 if (res == -1) return NULL; |
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887 i = res; /* res has new position to process */ |
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888 } |
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889 } |
| 35742 | 890 break; |
| 891 case DOUBLESTAR: | |
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892 ch = CHILD(n, i+1); /* tfpdef */ |
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893 assert(TYPE(ch) == tfpdef || TYPE(ch) == vfpdef); |
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894 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
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895 if (!kwarg) |
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896 return NULL; |
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897 if (NCH(ch) > 1) { |
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898 /* there is an annotation on the kwarg */ |
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899 kwargannotation = ast_for_expr(c, CHILD(ch, 2)); |
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900 if (!kwargannotation) |
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901 return NULL; |
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902 } |
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903 if (forbidden_name(kwarg, CHILD(ch, 0), 0)) |
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904 return NULL; |
| 35742 | 905 i += 3; |
| 906 break; | |
| 907 default: | |
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908 PyErr_Format(PyExc_SystemError, |
| 35742 | 909 "unexpected node in varargslist: %d @ %d", |
| 910 TYPE(ch), i); | |
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911 return NULL; |
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912 } |
| 35742 | 913 } |
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914 return arguments(posargs, vararg, varargannotation, kwonlyargs, kwarg, |
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915 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 916 } |
| 917 | |
| 918 static expr_ty | |
| 919 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 920 { | |
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921 expr_ty e; |
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922 identifier id; |
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923 int lineno, col_offset; |
| 35742 | 924 int i; |
| 925 | |
| 926 REQ(n, dotted_name); | |
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927 |
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928 lineno = LINENO(n); |
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929 col_offset = n->n_col_offset; |
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930 |
| 35742 | 931 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 932 if (!id) | |
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933 return NULL; |
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934 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 935 if (!e) |
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936 return NULL; |
| 35742 | 937 |
| 938 for (i = 2; i < NCH(n); i+=2) { | |
| 939 id = NEW_IDENTIFIER(CHILD(n, i)); | |
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940 if (!id) |
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941 return NULL; |
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942 e = Attribute(e, id, Load, lineno, col_offset, c->c_arena); |
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943 if (!e) |
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944 return NULL; |
| 35742 | 945 } |
| 946 | |
| 947 return e; | |
| 948 } | |
| 949 | |
| 950 static expr_ty | |
| 951 ast_for_decorator(struct compiling *c, const node *n) | |
| 952 { | |
| 953 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 954 expr_ty d = NULL; | |
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955 expr_ty name_expr; |
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956 |
| 35742 | 957 REQ(n, decorator); |
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958 REQ(CHILD(n, 0), AT); |
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959 REQ(RCHILD(n, -1), NEWLINE); |
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960 |
| 35742 | 961 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); |
| 962 if (!name_expr) | |
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963 return NULL; |
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964 |
| 35742 | 965 if (NCH(n) == 3) { /* No arguments */ |
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966 d = name_expr; |
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967 name_expr = NULL; |
| 35742 | 968 } |
| 969 else if (NCH(n) == 5) { /* Call with no arguments */ | |
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970 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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971 n->n_col_offset, c->c_arena); |
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972 if (!d) |
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973 return NULL; |
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974 name_expr = NULL; |
| 35742 | 975 } |
| 976 else { | |
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977 d = ast_for_call(c, CHILD(n, 3), name_expr); |
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978 if (!d) |
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979 return NULL; |
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980 name_expr = NULL; |
| 35742 | 981 } |
| 982 | |
| 983 return d; | |
| 984 } | |
| 985 | |
| 986 static asdl_seq* | |
| 987 ast_for_decorators(struct compiling *c, const node *n) | |
| 988 { | |
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989 asdl_seq* decorator_seq; |
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990 expr_ty d; |
| 35742 | 991 int i; |
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| 35742 | 993 REQ(n, decorators); |
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994 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 995 if (!decorator_seq) |
| 996 return NULL; | |
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997 |
| 35742 | 998 for (i = 0; i < NCH(n); i++) { |
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999 d = ast_for_decorator(c, CHILD(n, i)); |
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1000 if (!d) |
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1001 return NULL; |
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1002 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 1003 } |
| 1004 return decorator_seq; | |
| 1005 } | |
| 1006 | |
| 1007 static stmt_ty | |
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1008 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 1009 { |
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1010 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
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1011 identifier name; |
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1012 arguments_ty args; |
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1013 asdl_seq *body; |
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1014 expr_ty returns = NULL; |
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1015 int name_i = 1; |
| 35742 | 1016 |
| 1017 REQ(n, funcdef); | |
| 1018 | |
| 1019 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 1020 if (!name) | |
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1021 return NULL; |
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1022 if (forbidden_name(name, CHILD(n, name_i), 0)) |
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1023 return NULL; |
| 35742 | 1024 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 1025 if (!args) | |
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1026 return NULL; |
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1027 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
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1028 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
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1029 if (!returns) |
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1030 return NULL; |
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1031 name_i += 2; |
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1032 } |
| 35742 | 1033 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 1034 if (!body) | |
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1035 return NULL; |
| 35742 | 1036 |
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1037 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
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1038 n->n_col_offset, c->c_arena); |
| 35742 | 1039 } |
| 1040 | |
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1041 static stmt_ty |
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1042 ast_for_decorated(struct compiling *c, const node *n) |
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1043 { |
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1044 /* decorated: decorators (classdef | funcdef) */ |
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1045 stmt_ty thing = NULL; |
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1046 asdl_seq *decorator_seq = NULL; |
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1047 |
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1048 REQ(n, decorated); |
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1049 |
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1050 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
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1051 if (!decorator_seq) |
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1052 return NULL; |
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1053 |
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1054 assert(TYPE(CHILD(n, 1)) == funcdef || |
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1055 TYPE(CHILD(n, 1)) == classdef); |
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1056 |
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1057 if (TYPE(CHILD(n, 1)) == funcdef) { |
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1058 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
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1059 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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1060 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
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1061 } |
|
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1062 /* we count the decorators in when talking about the class' or |
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1063 * function's line number */ |
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1064 if (thing) { |
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1065 thing->lineno = LINENO(n); |
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1066 thing->col_offset = n->n_col_offset; |
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1067 } |
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1068 return thing; |
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1069 } |
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1070 |
| 35742 | 1071 static expr_ty |
| 1072 ast_for_lambdef(struct compiling *c, const node *n) | |
| 1073 { | |
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1074 /* lambdef: 'lambda' [varargslist] ':' test |
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1075 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1076 arguments_ty args; |
| 1077 expr_ty expression; | |
| 1078 | |
| 1079 if (NCH(n) == 3) { | |
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1080 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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1081 NULL, c->c_arena); |
| 35742 | 1082 if (!args) |
| 1083 return NULL; | |
| 1084 expression = ast_for_expr(c, CHILD(n, 2)); | |
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1085 if (!expression) |
| 35742 | 1086 return NULL; |
| 1087 } | |
| 1088 else { | |
| 1089 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1090 if (!args) | |
| 1091 return NULL; | |
| 1092 expression = ast_for_expr(c, CHILD(n, 3)); | |
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1093 if (!expression) |
| 35742 | 1094 return NULL; |
| 1095 } | |
| 1096 | |
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1097 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1098 } |
| 1099 | |
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1100 static expr_ty |
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1101 ast_for_ifexpr(struct compiling *c, const node *n) |
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1102 { |
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1103 /* test: or_test 'if' or_test 'else' test */ |
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1104 expr_ty expression, body, orelse; |
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1105 |
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1106 assert(NCH(n) == 5); |
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1107 body = ast_for_expr(c, CHILD(n, 0)); |
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1108 if (!body) |
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1109 return NULL; |
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1110 expression = ast_for_expr(c, CHILD(n, 2)); |
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1111 if (!expression) |
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1112 return NULL; |
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1113 orelse = ast_for_expr(c, CHILD(n, 4)); |
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1114 if (!orelse) |
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1115 return NULL; |
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1116 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
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1117 c->c_arena); |
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1118 } |
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1119 |
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1120 /* |
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|
1121 Count the number of 'for' loops in a comprehension. |
| 35742 | 1122 |
|
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1123 Helper for ast_for_comprehension(). |
| 35742 | 1124 */ |
| 1125 | |
| 1126 static int | |
|
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|
1127 count_comp_fors(struct compiling *c, const node *n) |
| 35742 | 1128 { |
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1129 int n_fors = 0; |
| 35742 | 1130 |
|
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1131 count_comp_for: |
|
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1132 n_fors++; |
|
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1133 REQ(n, comp_for); |
|
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1134 if (NCH(n) == 5) |
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1135 n = CHILD(n, 4); |
|
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1136 else |
|
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1137 return n_fors; |
|
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1138 count_comp_iter: |
|
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1139 REQ(n, comp_iter); |
|
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1140 n = CHILD(n, 0); |
|
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1141 if (TYPE(n) == comp_for) |
|
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1142 goto count_comp_for; |
|
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1143 else if (TYPE(n) == comp_if) { |
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1144 if (NCH(n) == 3) { |
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1145 n = CHILD(n, 2); |
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1146 goto count_comp_iter; |
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1147 } |
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1148 else |
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1149 return n_fors; |
|
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1150 } |
|
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1151 |
|
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1152 /* Should never be reached */ |
|
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1153 PyErr_SetString(PyExc_SystemError, |
|
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1154 "logic error in count_comp_fors"); |
|
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1155 return -1; |
| 35742 | 1156 } |
| 1157 | |
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1158 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1159 |
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|
1160 Helper for ast_for_comprehension(). |
| 35742 | 1161 */ |
| 1162 | |
| 1163 static int | |
|
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1164 count_comp_ifs(struct compiling *c, const node *n) |
| 35742 | 1165 { |
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1166 int n_ifs = 0; |
| 35742 | 1167 |
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1168 while (1) { |
|
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1169 REQ(n, comp_iter); |
|
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1170 if (TYPE(CHILD(n, 0)) == comp_for) |
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1171 return n_ifs; |
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1172 n = CHILD(n, 0); |
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1173 REQ(n, comp_if); |
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1174 n_ifs++; |
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1175 if (NCH(n) == 2) |
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1176 return n_ifs; |
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1177 n = CHILD(n, 2); |
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1178 } |
| 35742 | 1179 } |
| 1180 | |
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1181 static asdl_seq * |
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1182 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1183 { |
| 1184 int i, n_fors; | |
|
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1185 asdl_seq *comps; |
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1186 |
|
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1187 n_fors = count_comp_fors(c, n); |
| 35742 | 1188 if (n_fors == -1) |
| 1189 return NULL; | |
|
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1190 |
|
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1191 comps = asdl_seq_new(n_fors, c->c_arena); |
|
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1192 if (!comps) |
| 35742 | 1193 return NULL; |
|
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1194 |
| 35742 | 1195 for (i = 0; i < n_fors; i++) { |
|
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1196 comprehension_ty comp; |
| 35742 | 1197 asdl_seq *t; |
|
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|
1198 expr_ty expression, first; |
|
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1199 node *for_ch; |
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1200 |
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1201 REQ(n, comp_for); |
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1202 |
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1203 for_ch = CHILD(n, 1); |
|
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1204 t = ast_for_exprlist(c, for_ch, Store); |
|
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1205 if (!t) |
| 35742 | 1206 return NULL; |
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1207 expression = ast_for_expr(c, CHILD(n, 3)); |
|
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1208 if (!expression) |
| 35742 | 1209 return NULL; |
|
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1210 |
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1211 /* Check the # of children rather than the length of t, since |
|
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1212 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
|
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1213 first = (expr_ty)asdl_seq_GET(t, 0); |
|
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1214 if (NCH(for_ch) == 1) |
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1215 comp = comprehension(first, expression, NULL, c->c_arena); |
| 35742 | 1216 else |
|
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1217 comp = comprehension(Tuple(t, Store, first->lineno, first->col_offset, |
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1218 c->c_arena), |
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1219 expression, NULL, c->c_arena); |
|
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1220 if (!comp) |
| 35742 | 1221 return NULL; |
|
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|
1222 |
|
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1223 if (NCH(n) == 5) { |
| 35742 | 1224 int j, n_ifs; |
| 1225 asdl_seq *ifs; | |
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1226 |
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1227 n = CHILD(n, 4); |
|
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1228 n_ifs = count_comp_ifs(c, n); |
|
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1229 if (n_ifs == -1) |
| 35742 | 1230 return NULL; |
|
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1231 |
|
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|
1232 ifs = asdl_seq_new(n_ifs, c->c_arena); |
|
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diff
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|
1233 if (!ifs) |
| 35742 | 1234 return NULL; |
|
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|
1235 |
| 35742 | 1236 for (j = 0; j < n_ifs; j++) { |
|
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|
1237 REQ(n, comp_iter); |
|
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|
1238 n = CHILD(n, 0); |
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|
1239 REQ(n, comp_if); |
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|
1240 |
|
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|
1241 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
1242 if (!expression) |
|
35798
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Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
1243 return NULL; |
|
36718
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Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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parents:
36712
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|
1244 asdl_seq_SET(ifs, j, expression); |
|
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1245 if (NCH(n) == 3) |
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1246 n = CHILD(n, 2); |
| 35742 | 1247 } |
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1248 /* on exit, must guarantee that n is a comp_for */ |
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1249 if (TYPE(n) == comp_iter) |
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1250 n = CHILD(n, 0); |
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1251 comp->ifs = ifs; |
| 35742 | 1252 } |
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1253 asdl_seq_SET(comps, i, comp); |
| 35742 | 1254 } |
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1255 return comps; |
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1256 } |
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1257 |
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1258 static expr_ty |
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1259 ast_for_itercomp(struct compiling *c, const node *n, int type) |
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1260 { |
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1261 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1262 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1263 expr_ty elt; |
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1264 asdl_seq *comps; |
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1265 |
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1266 assert(NCH(n) > 1); |
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1267 |
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1268 elt = ast_for_expr(c, CHILD(n, 0)); |
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1269 if (!elt) |
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1270 return NULL; |
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1271 |
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1272 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1273 if (!comps) |
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1274 return NULL; |
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1275 |
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1276 if (type == COMP_GENEXP) |
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1277 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1278 else if (type == COMP_LISTCOMP) |
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1279 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1280 else if (type == COMP_SETCOMP) |
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1281 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1282 else |
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1283 /* Should never happen */ |
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1284 return NULL; |
| 35742 | 1285 } |
| 1286 | |
| 1287 static expr_ty | |
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1288 ast_for_dictcomp(struct compiling *c, const node *n) |
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1289 { |
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1290 expr_ty key, value; |
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1291 asdl_seq *comps; |
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1292 |
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1293 assert(NCH(n) > 3); |
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1294 REQ(CHILD(n, 1), COLON); |
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1295 |
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1296 key = ast_for_expr(c, CHILD(n, 0)); |
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1297 if (!key) |
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1298 return NULL; |
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1299 value = ast_for_expr(c, CHILD(n, 2)); |
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1300 if (!value) |
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1301 return NULL; |
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1302 |
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1303 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1304 if (!comps) |
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1305 return NULL; |
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1306 |
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1307 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1308 } |
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1309 |
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1310 static expr_ty |
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1311 ast_for_genexp(struct compiling *c, const node *n) |
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1312 { |
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1313 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1314 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1315 } |
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1316 |
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1317 static expr_ty |
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1318 ast_for_listcomp(struct compiling *c, const node *n) |
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1319 { |
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1320 assert(TYPE(n) == (testlist_comp)); |
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1321 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1322 } |
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1323 |
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1324 static expr_ty |
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1325 ast_for_setcomp(struct compiling *c, const node *n) |
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1326 { |
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1327 assert(TYPE(n) == (dictorsetmaker)); |
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1328 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1329 } |
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1330 |
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1331 |
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1332 static expr_ty |
| 35742 | 1333 ast_for_atom(struct compiling *c, const node *n) |
| 1334 { | |
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1335 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1336 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
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1337 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1338 */ |
| 1339 node *ch = CHILD(n, 0); | |
| 40894 | 1340 int bytesmode = 0; |
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1341 |
| 35742 | 1342 switch (TYPE(ch)) { |
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1343 case NAME: { |
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1344 /* All names start in Load context, but may later be |
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1345 changed. */ |
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1346 PyObject *name = NEW_IDENTIFIER(ch); |
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1347 if (!name) |
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1348 return NULL; |
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1349 return Name(name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1350 } |
| 35742 | 1351 case STRING: { |
| 40894 | 1352 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1353 if (!str) { |
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1354 if (PyErr_ExceptionMatches(PyExc_UnicodeError)) { |
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1355 PyObject *type, *value, *tback, *errstr; |
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1356 PyErr_Fetch(&type, &value, &tback); |
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1357 errstr = PyObject_Str(value); |
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1358 if (errstr) { |
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1359 char *s = ""; |
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1360 char buf[128]; |
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1361 s = _PyUnicode_AsString(errstr); |
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1362 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
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1363 ast_error(n, buf); |
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1364 Py_DECREF(errstr); |
|
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1365 } else { |
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1366 ast_error(n, "(unicode error) unknown error"); |
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1367 } |
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1368 Py_DECREF(type); |
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1369 Py_DECREF(value); |
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1370 Py_XDECREF(tback); |
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1371 } |
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1372 return NULL; |
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1373 } |
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1374 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1375 if (bytesmode) |
| 1376 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1377 else | |
| 1378 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1379 } |
| 1380 case NUMBER: { | |
|
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1381 PyObject *pynum = parsenumber(c, STR(ch)); |
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1382 if (!pynum) |
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1383 return NULL; |
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1384 |
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1385 PyArena_AddPyObject(c->c_arena, pynum); |
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1386 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1387 } |
|
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1388 case ELLIPSIS: /* Ellipsis */ |
|
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1389 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1390 case LPAR: /* some parenthesized expressions */ |
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1391 ch = CHILD(n, 1); |
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1392 |
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1393 if (TYPE(ch) == RPAR) |
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1394 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1395 |
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1396 if (TYPE(ch) == yield_expr) |
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1397 return ast_for_expr(c, ch); |
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1398 |
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1399 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
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1400 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
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1401 return ast_for_genexp(c, ch); |
|
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1402 |
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1403 return ast_for_testlist(c, ch); |
| 35742 | 1404 case LSQB: /* list (or list comprehension) */ |
|
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1405 ch = CHILD(n, 1); |
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1406 |
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1407 if (TYPE(ch) == RSQB) |
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1408 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1409 |
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|
1410 REQ(ch, testlist_comp); |
|
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1411 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
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1412 asdl_seq *elts = seq_for_testlist(c, ch); |
|
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1413 if (!elts) |
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|
1414 return NULL; |
|
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|
1415 |
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1416 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1417 } |
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1418 else |
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1419 return ast_for_listcomp(c, ch); |
| 35742 | 1420 case LBRACE: { |
|
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1421 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
|
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1422 * test (gen_for | (',' test)* [',']) */ |
|
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|
1423 int i, size; |
|
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|
1424 asdl_seq *keys, *values; |
|
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1425 |
|
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|
1426 ch = CHILD(n, 1); |
|
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1427 if (TYPE(ch) == RBRACE) { |
|
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|
1428 /* it's an empty dict */ |
|
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|
1429 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1430 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
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|
1431 /* it's a simple set */ |
|
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|
1432 asdl_seq *elts; |
|
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|
1433 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
|
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|
1434 elts = asdl_seq_new(size, c->c_arena); |
|
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|
1435 if (!elts) |
|
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|
1436 return NULL; |
|
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|
1437 for (i = 0; i < NCH(ch); i += 2) { |
|
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|
1438 expr_ty expression; |
|
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|
1439 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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|
1440 if (!expression) |
|
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|
1441 return NULL; |
|
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|
1442 asdl_seq_SET(elts, i / 2, expression); |
|
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|
1443 } |
|
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|
1444 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1445 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
|
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|
1446 /* it's a set comprehension */ |
|
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|
1447 return ast_for_setcomp(c, ch); |
|
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|
1448 } else if (NCH(ch) > 3 && TYPE(CHILD(ch, 3)) == comp_for) { |
|
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|
1449 return ast_for_dictcomp(c, ch); |
|
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|
1450 } else { |
|
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|
1451 /* it's a dict */ |
|
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|
1452 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
|
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|
1453 keys = asdl_seq_new(size, c->c_arena); |
|
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|
1454 if (!keys) |
|
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|
1455 return NULL; |
|
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|
1456 |
|
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|
1457 values = asdl_seq_new(size, c->c_arena); |
|
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|
1458 if (!values) |
|
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|
1459 return NULL; |
|
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|
1460 |
|
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|
1461 for (i = 0; i < NCH(ch); i += 4) { |
|
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|
1462 expr_ty expression; |
|
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|
1463 |
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|
1464 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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|
1465 if (!expression) |
|
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|
1466 return NULL; |
|
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|
1467 |
|
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|
1468 asdl_seq_SET(keys, i / 4, expression); |
|
35873
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|
1469 |
|
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|
1470 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
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|
1471 if (!expression) |
|
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|
1472 return NULL; |
|
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|
1473 |
|
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diff
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|
1474 asdl_seq_SET(values, i / 4, expression); |
|
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|
1475 } |
|
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diff
changeset
|
1476 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
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diff
changeset
|
1477 } |
| 35742 | 1478 } |
| 1479 default: | |
|
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|
1480 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
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diff
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|
1481 return NULL; |
| 35742 | 1482 } |
| 1483 } | |
| 1484 | |
| 1485 static slice_ty | |
| 1486 ast_for_slice(struct compiling *c, const node *n) | |
| 1487 { | |
| 1488 node *ch; | |
| 1489 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1490 | |
| 1491 REQ(n, subscript); | |
| 1492 | |
| 1493 /* | |
|
39783
7a0ad110e91e
Patch #1550786: ellipsis literal.
Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
1494 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1495 sliceop: ':' [test] |
| 1496 */ | |
| 1497 ch = CHILD(n, 0); | |
| 1498 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1499 /* 'step' variable hold no significance in terms of being used over | |
| 1500 other vars */ | |
|
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|
1501 step = ast_for_expr(c, ch); |
| 35742 | 1502 if (!step) |
| 1503 return NULL; | |
|
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|
1504 |
|
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|
1505 return Index(step, c->c_arena); |
| 35742 | 1506 } |
| 1507 | |
| 1508 if (TYPE(ch) == test) { | |
|
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|
1509 lower = ast_for_expr(c, ch); |
| 35742 | 1510 if (!lower) |
| 1511 return NULL; | |
| 1512 } | |
| 1513 | |
| 1514 /* If there's an upper bound it's in the second or third position. */ | |
| 1515 if (TYPE(ch) == COLON) { | |
|
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|
1516 if (NCH(n) > 1) { |
|
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|
1517 node *n2 = CHILD(n, 1); |
| 35742 | 1518 |
|
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|
1519 if (TYPE(n2) == test) { |
|
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|
1520 upper = ast_for_expr(c, n2); |
| 35742 | 1521 if (!upper) |
| 1522 return NULL; | |
| 1523 } | |
|
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|
1524 } |
| 35742 | 1525 } else if (NCH(n) > 2) { |
|
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|
1526 node *n2 = CHILD(n, 2); |
| 35742 | 1527 |
|
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|
1528 if (TYPE(n2) == test) { |
|
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|
1529 upper = ast_for_expr(c, n2); |
| 35742 | 1530 if (!upper) |
| 1531 return NULL; | |
| 1532 } | |
| 1533 } | |
| 1534 | |
| 1535 ch = CHILD(n, NCH(n) - 1); | |
| 1536 if (TYPE(ch) == sliceop) { | |
|
54918
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|
1537 if (NCH(ch) != 1) { |
|
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|
1538 ch = CHILD(ch, 1); |
|
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|
1539 if (TYPE(ch) == test) { |
|
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|
1540 step = ast_for_expr(c, ch); |
|
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|
1541 if (!step) |
|
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|
1542 return NULL; |
|
f731859e9b3b
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|
1543 } |
| 35742 | 1544 } |
| 1545 } | |
| 1546 | |
|
36065
ea083efdc96c
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diff
changeset
|
1547 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1548 } |
| 1549 | |
| 1550 static expr_ty | |
| 1551 ast_for_binop(struct compiling *c, const node *n) | |
| 1552 { | |
|
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|
1553 /* Must account for a sequence of expressions. |
|
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|
1554 How should A op B op C by represented? |
|
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|
1555 BinOp(BinOp(A, op, B), op, C). |
|
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|
1556 */ |
| 35742 | 1557 |
|
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|
1558 int i, nops; |
|
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|
1559 expr_ty expr1, expr2, result; |
|
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|
1560 operator_ty newoperator; |
|
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|
1561 |
|
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|
1562 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
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|
1563 if (!expr1) |
|
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|
1564 return NULL; |
| 35742 | 1565 |
|
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|
1566 expr2 = ast_for_expr(c, CHILD(n, 2)); |
|
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|
1567 if (!expr2) |
|
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|
1568 return NULL; |
|
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|
1569 |
|
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|
1570 newoperator = get_operator(CHILD(n, 1)); |
|
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|
1571 if (!newoperator) |
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|
1572 return NULL; |
| 35742 | 1573 |
|
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|
1574 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
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|
1575 c->c_arena); |
|
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|
1576 if (!result) |
|
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|
1577 return NULL; |
| 35742 | 1578 |
|
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|
1579 nops = (NCH(n) - 1) / 2; |
|
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|
1580 for (i = 1; i < nops; i++) { |
|
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|
1581 expr_ty tmp_result, tmp; |
|
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|
1582 const node* next_oper = CHILD(n, i * 2 + 1); |
|
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|
1583 |
|
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|
1584 newoperator = get_operator(next_oper); |
|
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|
1585 if (!newoperator) |
| 35742 | 1586 return NULL; |
| 1587 | |
|
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|
1588 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
|
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|
1589 if (!tmp) |
| 35742 | 1590 return NULL; |
| 1591 | |
|
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|
1592 tmp_result = BinOp(result, newoperator, tmp, |
|
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1593 LINENO(next_oper), next_oper->n_col_offset, |
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1594 c->c_arena); |
|
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1595 if (!tmp_result) |
|
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1596 return NULL; |
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1597 result = tmp_result; |
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1598 } |
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|
1599 return result; |
| 35742 | 1600 } |
| 1601 | |
|
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|
1602 static expr_ty |
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|
1603 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
|
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1604 { |
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1605 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
|
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|
1606 subscriptlist: subscript (',' subscript)* [','] |
|
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|
1607 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
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1608 */ |
|
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|
1609 REQ(n, trailer); |
|
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|
1610 if (TYPE(CHILD(n, 0)) == LPAR) { |
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1611 if (NCH(n) == 2) |
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1612 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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1613 n->n_col_offset, c->c_arena); |
|
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1614 else |
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1615 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
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1616 } |
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1617 else if (TYPE(CHILD(n, 0)) == DOT ) { |
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1618 PyObject *attr_id = NEW_IDENTIFIER(CHILD(n, 1)); |
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1619 if (!attr_id) |
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1620 return NULL; |
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1621 return Attribute(left_expr, attr_id, Load, |
|
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1622 LINENO(n), n->n_col_offset, c->c_arena); |
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1623 } |
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1624 else { |
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1625 REQ(CHILD(n, 0), LSQB); |
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1626 REQ(CHILD(n, 2), RSQB); |
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|
1627 n = CHILD(n, 1); |
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1628 if (NCH(n) == 1) { |
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1629 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
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changeset
|
1630 if (!slc) |
|
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1631 return NULL; |
|
37879
f731859e9b3b
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parents:
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diff
changeset
|
1632 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
|
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1633 c->c_arena); |
|
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1634 } |
|
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Refactor code for translating "power" nodes.
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parents:
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diff
changeset
|
1635 else { |
|
61466
cab14be0ada1
Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents:
56951
diff
changeset
|
1636 /* The grammar is ambiguous here. The ambiguity is resolved |
|
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8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1637 by treating the sequence as a tuple literal if there are |
|
8611f39cd82b
Fix parsing of subscriptlist.
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diff
changeset
|
1638 no slice features. |
|
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Fix parsing of subscriptlist.
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diff
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|
1639 */ |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
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|
1640 int j; |
|
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diff
changeset
|
1641 slice_ty slc; |
|
36686
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Fix parsing of subscriptlist.
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diff
changeset
|
1642 expr_ty e; |
|
40941
2ca14d6a369b
Whoops, fix build breakage. There were still a few uses of the bool type.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1643 int simple = 1; |
|
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Fix parsing of subscriptlist.
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diff
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|
1644 asdl_seq *slices, *elts; |
|
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Fix parsing of subscriptlist.
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diff
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|
1645 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
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diff
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|
1646 if (!slices) |
|
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diff
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|
1647 return NULL; |
|
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diff
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|
1648 for (j = 0; j < NCH(n); j += 2) { |
|
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parents:
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diff
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|
1649 slc = ast_for_slice(c, CHILD(n, j)); |
|
36065
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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diff
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|
1650 if (!slc) |
|
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|
1651 return NULL; |
|
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diff
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|
1652 if (slc->kind != Index_kind) |
|
40941
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diff
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|
1653 simple = 0; |
|
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diff
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|
1654 asdl_seq_SET(slices, j / 2, slc); |
|
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diff
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|
1655 } |
|
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diff
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|
1656 if (!simple) { |
|
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diff
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|
1657 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
|
36786
57322cb2ca11
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diff
changeset
|
1658 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1659 } |
|
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Fix parsing of subscriptlist.
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diff
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|
1660 /* extract Index values and put them in a Tuple */ |
|
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Fix parsing of subscriptlist.
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diff
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|
1661 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
36877
e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
parents:
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diff
changeset
|
1662 if (!elts) |
|
e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
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diff
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|
1663 return NULL; |
|
36686
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Fix parsing of subscriptlist.
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diff
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|
1664 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
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Fix parsing of subscriptlist.
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parents:
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diff
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|
1665 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
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Fix parsing of subscriptlist.
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parents:
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diff
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|
1666 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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diff
changeset
|
1667 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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diff
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|
1668 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
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diff
changeset
|
1669 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
36686
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diff
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|
1670 if (!e) |
|
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Fix parsing of subscriptlist.
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diff
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|
1671 return NULL; |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
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|
1672 return Subscript(left_expr, Index(e, c->c_arena), |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
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|
1673 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1674 } |
|
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parents:
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diff
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|
1675 } |
|
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diff
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|
1676 } |
|
842caa245917
Refactor code for translating "power" nodes.
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parents:
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diff
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|
1677 |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1678 static expr_ty |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
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|
1679 ast_for_factor(struct compiling *c, const node *n) |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
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|
1680 { |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
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|
1681 expr_ty expression; |
|
654c380cf8b9
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Thomas Wouters <thomas@python.org>
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|
1682 |
|
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|
1683 expression = ast_for_expr(c, CHILD(n, 1)); |
|
654c380cf8b9
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|
1684 if (!expression) |
|
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|
1685 return NULL; |
|
654c380cf8b9
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|
1686 |
|
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changeset
|
1687 switch (TYPE(CHILD(n, 0))) { |
|
654c380cf8b9
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|
1688 case PLUS: |
|
654c380cf8b9
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|
1689 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
|
654c380cf8b9
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|
1690 c->c_arena); |
|
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|
1691 case MINUS: |
|
654c380cf8b9
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|
1692 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
|
654c380cf8b9
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|
1693 c->c_arena); |
|
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|
1694 case TILDE: |
|
654c380cf8b9
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|
1695 return UnaryOp(Invert, expression, LINENO(n), |
|
654c380cf8b9
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|
1696 n->n_col_offset, c->c_arena); |
|
654c380cf8b9
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|
1697 } |
|
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|
1698 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
|
654c380cf8b9
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|
1699 TYPE(CHILD(n, 0))); |
|
654c380cf8b9
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|
1700 return NULL; |
|
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|
1701 } |
|
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|
1702 |
|
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|
1703 static expr_ty |
|
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diff
changeset
|
1704 ast_for_power(struct compiling *c, const node *n) |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
1705 { |
|
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diff
changeset
|
1706 /* power: atom trailer* ('**' factor)* |
|
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diff
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|
1707 */ |
|
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diff
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|
1708 int i; |
|
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diff
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|
1709 expr_ty e, tmp; |
|
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diff
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|
1710 REQ(n, power); |
|
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changeset
|
1711 e = ast_for_atom(c, CHILD(n, 0)); |
|
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diff
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|
1712 if (!e) |
|
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|
1713 return NULL; |
|
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changeset
|
1714 if (NCH(n) == 1) |
|
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diff
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|
1715 return e; |
|
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|
1716 for (i = 1; i < NCH(n); i++) { |
|
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|
1717 node *ch = CHILD(n, i); |
|
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|
1718 if (TYPE(ch) != trailer) |
|
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|
1719 break; |
|
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|
1720 tmp = ast_for_trailer(c, ch, e); |
|
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|
1721 if (!tmp) |
|
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|
1722 return NULL; |
|
40450
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|
1723 tmp->lineno = e->lineno; |
|
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|
1724 tmp->col_offset = e->col_offset; |
|
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|
1725 e = tmp; |
|
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|
1726 } |
|
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changeset
|
1727 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
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changeset
|
1728 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
36065
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changeset
|
1729 if (!f) |
|
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changeset
|
1730 return NULL; |
|
36786
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Martin v. Löwis <martin@v.loewis.de>
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diff
changeset
|
1731 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
36065
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Neal Norwitz <nnorwitz@gmail.com>
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changeset
|
1732 if (!tmp) |
|
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|
1733 return NULL; |
|
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changeset
|
1734 e = tmp; |
|
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diff
changeset
|
1735 } |
|
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diff
changeset
|
1736 return e; |
|
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1737 } |
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1738 |
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1739 static expr_ty |
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1740 ast_for_starred(struct compiling *c, const node *n) |
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1741 { |
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1742 expr_ty tmp; |
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1743 REQ(n, star_expr); |
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1744 |
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1745 tmp = ast_for_expr(c, CHILD(n, 1)); |
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1746 if (!tmp) |
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1747 return NULL; |
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1748 |
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1749 /* The Load context is changed later. */ |
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1750 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1751 } |
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1752 |
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1753 |
| 35742 | 1754 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1755 */ | |
| 1756 | |
| 1757 static expr_ty | |
| 1758 ast_for_expr(struct compiling *c, const node *n) | |
| 1759 { | |
| 1760 /* handle the full range of simple expressions | |
|
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1761 test: or_test ['if' or_test 'else' test] | lambdef |
|
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1762 test_nocond: or_test | lambdef_nocond |
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1763 or_test: and_test ('or' and_test)* |
| 35742 | 1764 and_test: not_test ('and' not_test)* |
| 1765 not_test: 'not' not_test | comparison | |
| 1766 comparison: expr (comp_op expr)* | |
| 1767 expr: xor_expr ('|' xor_expr)* | |
| 1768 xor_expr: and_expr ('^' and_expr)* | |
| 1769 and_expr: shift_expr ('&' shift_expr)* | |
| 1770 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1771 arith_expr: term (('+'|'-') term)* | |
| 1772 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1773 factor: ('+'|'-'|'~') factor | power | |
| 1774 power: atom trailer* ('**' factor)* | |
| 1775 */ | |
| 1776 | |
| 1777 asdl_seq *seq; | |
| 1778 int i; | |
| 1779 | |
| 1780 loop: | |
| 1781 switch (TYPE(n)) { | |
| 1782 case test: | |
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1783 case test_nocond: |
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1784 if (TYPE(CHILD(n, 0)) == lambdef || |
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1785 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1786 return ast_for_lambdef(c, CHILD(n, 0)); |
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1787 else if (NCH(n) > 1) |
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1788 return ast_for_ifexpr(c, n); |
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1789 /* Fallthrough */ |
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1790 case or_test: |
| 35742 | 1791 case and_test: |
| 1792 if (NCH(n) == 1) { | |
| 1793 n = CHILD(n, 0); | |
| 1794 goto loop; | |
| 1795 } | |
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1796 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1797 if (!seq) |
| 1798 return NULL; | |
| 1799 for (i = 0; i < NCH(n); i += 2) { | |
| 1800 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1801 if (!e) | |
| 1802 return NULL; | |
| 1803 asdl_seq_SET(seq, i / 2, e); | |
| 1804 } | |
| 1805 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
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1806 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
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1807 c->c_arena); |
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1808 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
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1809 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1810 case not_test: |
| 1811 if (NCH(n) == 1) { | |
| 1812 n = CHILD(n, 0); | |
| 1813 goto loop; | |
| 1814 } | |
| 1815 else { | |
| 1816 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1817 if (!expression) | |
| 1818 return NULL; | |
| 1819 | |
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1820 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
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1821 c->c_arena); |
| 35742 | 1822 } |
| 1823 case comparison: | |
| 1824 if (NCH(n) == 1) { | |
| 1825 n = CHILD(n, 0); | |
| 1826 goto loop; | |
| 1827 } | |
| 1828 else { | |
| 1829 expr_ty expression; | |
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1830 asdl_int_seq *ops; |
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1831 asdl_seq *cmps; |
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1832 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1833 if (!ops) |
| 1834 return NULL; | |
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1835 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1836 if (!cmps) { |
| 1837 return NULL; | |
| 1838 } | |
| 1839 for (i = 1; i < NCH(n); i += 2) { | |
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1840 cmpop_ty newoperator; |
| 35742 | 1841 |
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1842 newoperator = ast_for_comp_op(c, CHILD(n, i)); |
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1843 if (!newoperator) { |
| 35742 | 1844 return NULL; |
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1845 } |
| 35742 | 1846 |
| 1847 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
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1848 if (!expression) { |
| 35742 | 1849 return NULL; |
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1850 } |
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1851 |
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1852 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1853 asdl_seq_SET(cmps, i / 2, expression); |
| 1854 } | |
| 1855 expression = ast_for_expr(c, CHILD(n, 0)); | |
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1856 if (!expression) { |
| 35742 | 1857 return NULL; |
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1858 } |
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1859 |
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1860 return Compare(expression, ops, cmps, LINENO(n), |
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1861 n->n_col_offset, c->c_arena); |
| 35742 | 1862 } |
| 1863 break; | |
| 1864 | |
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1865 case star_expr: |
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1866 return ast_for_starred(c, n); |
| 35742 | 1867 /* The next five cases all handle BinOps. The main body of code |
| 1868 is the same in each case, but the switch turned inside out to | |
| 1869 reuse the code for each type of operator. | |
| 1870 */ | |
| 1871 case expr: | |
| 1872 case xor_expr: | |
| 1873 case and_expr: | |
| 1874 case shift_expr: | |
| 1875 case arith_expr: | |
| 1876 case term: | |
| 1877 if (NCH(n) == 1) { | |
| 1878 n = CHILD(n, 0); | |
| 1879 goto loop; | |
| 1880 } | |
| 1881 return ast_for_binop(c, n); | |
| 1882 case yield_expr: { | |
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1883 expr_ty exp = NULL; |
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1884 if (NCH(n) == 2) { |
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1885 exp = ast_for_testlist(c, CHILD(n, 1)); |
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1886 if (!exp) |
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1887 return NULL; |
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1888 } |
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1889 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
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1890 } |
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1891 case factor: |
| 35742 | 1892 if (NCH(n) == 1) { |
| 1893 n = CHILD(n, 0); | |
| 1894 goto loop; | |
| 1895 } | |
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1896 return ast_for_factor(c, n); |
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1897 case power: |
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1898 return ast_for_power(c, n); |
| 35742 | 1899 default: |
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1900 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1901 return NULL; |
| 1902 } | |
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1903 /* should never get here unless if error is set */ |
| 35742 | 1904 return NULL; |
| 1905 } | |
| 1906 | |
| 1907 static expr_ty | |
| 1908 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1909 { | |
| 1910 /* | |
| 1911 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1912 | '**' test) | |
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1913 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1914 */ |
| 1915 | |
| 1916 int i, nargs, nkeywords, ngens; | |
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1917 asdl_seq *args; |
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1918 asdl_seq *keywords; |
| 35742 | 1919 expr_ty vararg = NULL, kwarg = NULL; |
| 1920 | |
| 1921 REQ(n, arglist); | |
| 1922 | |
| 1923 nargs = 0; | |
| 1924 nkeywords = 0; | |
| 1925 ngens = 0; | |
| 1926 for (i = 0; i < NCH(n); i++) { | |
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1927 node *ch = CHILD(n, i); |
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1928 if (TYPE(ch) == argument) { |
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1929 if (NCH(ch) == 1) |
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1930 nargs++; |
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1931 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1932 ngens++; |
| 35742 | 1933 else |
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1934 nkeywords++; |
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1935 } |
| 35742 | 1936 } |
| 1937 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
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1938 ast_error(n, "Generator expression must be parenthesized " |
|
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1939 "if not sole argument"); |
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1940 return NULL; |
| 35742 | 1941 } |
| 1942 | |
| 1943 if (nargs + nkeywords + ngens > 255) { | |
| 1944 ast_error(n, "more than 255 arguments"); | |
| 1945 return NULL; | |
| 1946 } | |
| 1947 | |
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1948 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1949 if (!args) |
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1950 return NULL; |
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1951 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1952 if (!keywords) |
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1953 return NULL; |
| 35742 | 1954 nargs = 0; |
| 1955 nkeywords = 0; | |
| 1956 for (i = 0; i < NCH(n); i++) { | |
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1957 node *ch = CHILD(n, i); |
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1958 if (TYPE(ch) == argument) { |
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1959 expr_ty e; |
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1960 if (NCH(ch) == 1) { |
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1961 if (nkeywords) { |
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1962 ast_error(CHILD(ch, 0), |
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1963 "non-keyword arg after keyword arg"); |
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1964 return NULL; |
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1965 } |
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1966 if (vararg) { |
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1967 ast_error(CHILD(ch, 0), |
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1968 "only named arguments may follow *expression"); |
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1969 return NULL; |
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1970 } |
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1971 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1972 if (!e) |
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1973 return NULL; |
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1974 asdl_seq_SET(args, nargs++, e); |
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1975 } |
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1976 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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1977 e = ast_for_genexp(c, ch); |
| 35742 | 1978 if (!e) |
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1979 return NULL; |
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1980 asdl_seq_SET(args, nargs++, e); |
| 35742 | 1981 } |
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1982 else { |
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1983 keyword_ty kw; |
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1984 identifier key, tmp; |
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1985 int k; |
| 35742 | 1986 |
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1987 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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1988 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1989 if (!e) |
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1990 return NULL; |
| 35742 | 1991 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1992 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 1993 * SF bug 132313 points out that complaining about a keyword | |
| 1994 * then is very confusing. | |
| 1995 */ | |
| 1996 if (e->kind == Lambda_kind) { | |
| 1997 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
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1998 return NULL; |
| 35742 | 1999 } else if (e->kind != Name_kind) { |
| 2000 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
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2001 return NULL; |
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2002 } else if (forbidden_name(e->v.Name.id, ch, 1)) { |
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2003 return NULL; |
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2004 } |
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2005 key = e->v.Name.id; |
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2006 for (k = 0; k < nkeywords; k++) { |
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2007 tmp = ((keyword_ty)asdl_seq_GET(keywords, k))->arg; |
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2008 if (!PyUnicode_Compare(tmp, key)) { |
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2009 ast_error(CHILD(ch, 0), "keyword argument repeated"); |
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2010 return NULL; |
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2011 } |
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2012 } |
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2013 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 2014 if (!e) |
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2015 return NULL; |
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2016 kw = keyword(key, e, c->c_arena); |
| 35742 | 2017 if (!kw) |
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2018 return NULL; |
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2019 asdl_seq_SET(keywords, nkeywords++, kw); |
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2020 } |
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2021 } |
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2022 else if (TYPE(ch) == STAR) { |
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2023 vararg = ast_for_expr(c, CHILD(n, i+1)); |
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2024 if (!vararg) |
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2025 return NULL; |
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2026 i++; |
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2027 } |
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2028 else if (TYPE(ch) == DOUBLESTAR) { |
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2029 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
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2030 if (!kwarg) |
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2031 return NULL; |
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2032 i++; |
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2033 } |
| 35742 | 2034 } |
| 2035 | |
|
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2036 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 2037 } |
| 2038 | |
| 2039 static expr_ty | |
|
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2040 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 2041 { |
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2042 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
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2043 /* testlist: test (',' test)* [','] */ |
| 35742 | 2044 assert(NCH(n) > 0); |
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2045 if (TYPE(n) == testlist_comp) { |
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2046 if (NCH(n) > 1) |
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2047 assert(TYPE(CHILD(n, 1)) != comp_for); |
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2048 } |
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2049 else { |
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2050 assert(TYPE(n) == testlist || |
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2051 TYPE(n) == testlist_star_expr); |
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2052 } |
| 35742 | 2053 if (NCH(n) == 1) |
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2054 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 2055 else { |
| 2056 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 2057 if (!tmp) | |
| 2058 return NULL; | |
|
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2059 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2060 } |
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2061 } |
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2062 |
| 35742 | 2063 static stmt_ty |
| 2064 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2065 { | |
| 2066 REQ(n, expr_stmt); | |
|
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2067 /* expr_stmt: testlist_star_expr (augassign (yield_expr|testlist) |
| 35742 | 2068 | ('=' (yield_expr|testlist))*) |
|
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2069 testlist_star_expr: (test|star_expr) (',' test|star_expr)* [','] |
| 35742 | 2070 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' |
|
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2071 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2072 test: ... here starts the operator precendence dance |
| 2073 */ | |
| 2074 | |
| 2075 if (NCH(n) == 1) { | |
|
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2076 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2077 if (!e) |
| 2078 return NULL; | |
| 2079 | |
|
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2080 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2081 } |
| 2082 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2083 expr_ty expr1, expr2; | |
|
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2084 operator_ty newoperator; |
|
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2085 node *ch = CHILD(n, 0); |
| 35742 | 2086 |
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2087 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2088 if (!expr1) |
| 2089 return NULL; | |
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2090 if(!set_context(c, expr1, Store, ch)) |
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2091 return NULL; |
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2092 /* set_context checks that most expressions are not the left side. |
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2093 Augmented assignments can only have a name, a subscript, or an |
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2094 attribute on the left, though, so we have to explicitly check for |
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2095 those. */ |
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2096 switch (expr1->kind) { |
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2097 case Name_kind: |
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2098 case Attribute_kind: |
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2099 case Subscript_kind: |
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2100 break; |
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2101 default: |
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2102 ast_error(ch, "illegal expression for augmented assignment"); |
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2103 return NULL; |
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2104 } |
| 35742 | 2105 |
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2106 ch = CHILD(n, 2); |
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2107 if (TYPE(ch) == testlist) |
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2108 expr2 = ast_for_testlist(c, ch); |
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2109 else |
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2110 expr2 = ast_for_expr(c, ch); |
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2111 if (!expr2) |
| 35742 | 2112 return NULL; |
| 2113 | |
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2114 newoperator = ast_for_augassign(c, CHILD(n, 1)); |
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2115 if (!newoperator) |
| 35742 | 2116 return NULL; |
| 2117 | |
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2118 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2119 } |
| 2120 else { | |
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2121 int i; |
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2122 asdl_seq *targets; |
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2123 node *value; |
| 35742 | 2124 expr_ty expression; |
| 2125 | |
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2126 /* a normal assignment */ |
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2127 REQ(CHILD(n, 1), EQUAL); |
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2128 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
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2129 if (!targets) |
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2130 return NULL; |
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2131 for (i = 0; i < NCH(n) - 2; i += 2) { |
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2132 expr_ty e; |
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2133 node *ch = CHILD(n, i); |
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2134 if (TYPE(ch) == yield_expr) { |
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2135 ast_error(ch, "assignment to yield expression not possible"); |
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2136 return NULL; |
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2137 } |
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2138 e = ast_for_testlist(c, ch); |
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2139 if (!e) |
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2140 return NULL; |
| 35742 | 2141 |
|
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2142 /* set context to assign */ |
|
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2143 if (!set_context(c, e, Store, CHILD(n, i))) |
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2144 return NULL; |
| 35742 | 2145 |
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2146 asdl_seq_SET(targets, i / 2, e); |
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2147 } |
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2148 value = CHILD(n, NCH(n) - 1); |
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2149 if (TYPE(value) == testlist_star_expr) |
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2150 expression = ast_for_testlist(c, value); |
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2151 else |
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|
2152 expression = ast_for_expr(c, value); |
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2153 if (!expression) |
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2154 return NULL; |
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|
2155 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2156 } |
| 2157 } | |
| 2158 | |
|
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2159 |
| 35742 | 2160 static asdl_seq * |
|
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|
2161 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2162 { |
| 2163 asdl_seq *seq; | |
| 2164 int i; | |
| 2165 expr_ty e; | |
| 2166 | |
| 2167 REQ(n, exprlist); | |
| 2168 | |
|
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changeset
|
2169 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2170 if (!seq) |
|
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|
2171 return NULL; |
| 35742 | 2172 for (i = 0; i < NCH(n); i += 2) { |
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2173 e = ast_for_expr(c, CHILD(n, i)); |
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|
2174 if (!e) |
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|
2175 return NULL; |
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|
2176 asdl_seq_SET(seq, i / 2, e); |
|
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2177 if (context && !set_context(c, e, context, CHILD(n, i))) |
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2178 return NULL; |
| 35742 | 2179 } |
| 2180 return seq; | |
| 2181 } | |
| 2182 | |
| 2183 static stmt_ty | |
| 2184 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2185 { | |
| 2186 asdl_seq *expr_list; | |
|
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|
2187 |
| 35742 | 2188 /* del_stmt: 'del' exprlist */ |
| 2189 REQ(n, del_stmt); | |
| 2190 | |
| 2191 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2192 if (!expr_list) | |
| 2193 return NULL; | |
|
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|
2194 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2195 } |
| 2196 | |
| 2197 static stmt_ty | |
| 2198 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2199 { | |
| 2200 /* | |
| 2201 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2202 | yield_stmt | |
| 2203 break_stmt: 'break' | |
| 2204 continue_stmt: 'continue' | |
| 2205 return_stmt: 'return' [testlist] | |
| 2206 yield_stmt: yield_expr | |
| 2207 yield_expr: 'yield' testlist | |
| 2208 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2209 */ | |
| 2210 node *ch; | |
| 2211 | |
| 2212 REQ(n, flow_stmt); | |
| 2213 ch = CHILD(n, 0); | |
| 2214 switch (TYPE(ch)) { | |
| 2215 case break_stmt: | |
|
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|
2216 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2217 case continue_stmt: |
|
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|
2218 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2219 case yield_stmt: { /* will reduce to yield_expr */ |
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2220 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); |
|
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|
2221 if (!exp) |
|
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2222 return NULL; |
|
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|
2223 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2224 } |
| 2225 case return_stmt: | |
| 2226 if (NCH(ch) == 1) | |
|
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changeset
|
2227 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2228 else { |
|
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|
2229 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2230 if (!expression) |
| 2231 return NULL; | |
|
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|
2232 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2233 } |
| 2234 case raise_stmt: | |
| 2235 if (NCH(ch) == 1) | |
|
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|
2236 return Raise(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
2237 else if (NCH(ch) >= 2) { |
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|
2238 expr_ty cause = NULL; |
| 35742 | 2239 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); |
| 2240 if (!expression) | |
| 2241 return NULL; | |
|
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|
2242 if (NCH(ch) == 4) { |
|
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|
2243 cause = ast_for_expr(c, CHILD(ch, 3)); |
|
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|
2244 if (!cause) |
|
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|
2245 return NULL; |
|
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|
2246 } |
|
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|
2247 return Raise(expression, cause, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2248 } |
| 2249 default: | |
|
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|
2250 PyErr_Format(PyExc_SystemError, |
| 35742 | 2251 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2252 return NULL; | |
| 2253 } | |
|
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|
2254 |
|
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|
2255 PyErr_SetString(PyExc_SystemError, "unhandled flow statement"); |
|
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2256 return NULL; |
| 35742 | 2257 } |
| 2258 | |
| 2259 static alias_ty | |
|
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|
2260 alias_for_import_name(struct compiling *c, const node *n, int store) |
| 35742 | 2261 { |
| 2262 /* | |
|
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|
2263 import_as_name: NAME ['as' NAME] |
|
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|
2264 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2265 dotted_name: NAME ('.' NAME)* |
| 2266 */ | |
|
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|
2267 identifier str, name; |
|
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2268 |
| 35742 | 2269 loop: |
| 2270 switch (TYPE(n)) { | |
|
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2271 case import_as_name: { |
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2272 node *name_node = CHILD(n, 0); |
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2273 str = NULL; |
|
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2274 name = NEW_IDENTIFIER(name_node); |
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2275 if (!name) |
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2276 return NULL; |
|
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2277 if (NCH(n) == 3) { |
|
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2278 node *str_node = CHILD(n, 2); |
|
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2279 str = NEW_IDENTIFIER(str_node); |
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2280 if (!str) |
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2281 return NULL; |
|
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2282 if (store && forbidden_name(str, str_node, 0)) |
|
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|
2283 return NULL; |
|
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2284 } |
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2285 else { |
|
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|
2286 if (forbidden_name(name, name_node, 0)) |
|
54918
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|
2287 return NULL; |
|
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|
2288 } |
|
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2289 return alias(name, str, c->c_arena); |
|
54918
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|
2290 } |
| 35742 | 2291 case dotted_as_name: |
| 2292 if (NCH(n) == 1) { | |
| 2293 n = CHILD(n, 0); | |
| 2294 goto loop; | |
| 2295 } | |
| 2296 else { | |
|
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|
2297 node *asname_node = CHILD(n, 2); |
|
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|
2298 alias_ty a = alias_for_import_name(c, CHILD(n, 0), 0); |
|
39610
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
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|
2299 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
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2300 return NULL; |
| 35742 | 2301 assert(!a->asname); |
|
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|
2302 a->asname = NEW_IDENTIFIER(asname_node); |
|
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|
2303 if (!a->asname) |
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|
2304 return NULL; |
|
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|
2305 if (forbidden_name(a->asname, asname_node, 0)) |
|
54918
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|
2306 return NULL; |
| 35742 | 2307 return a; |
| 2308 } | |
| 2309 break; | |
| 2310 case dotted_name: | |
|
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|
2311 if (NCH(n) == 1) { |
|
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|
2312 node *name_node = CHILD(n, 0); |
|
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|
2313 name = NEW_IDENTIFIER(name_node); |
|
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|
2314 if (!name) |
|
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|
2315 return NULL; |
|
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|
2316 if (store && forbidden_name(name, name_node, 0)) |
|
54918
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|
2317 return NULL; |
|
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|
2318 return alias(name, NULL, c->c_arena); |
|
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|
2319 } |
| 35742 | 2320 else { |
| 2321 /* Create a string of the form "a.b.c" */ | |
|
36242
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Repair bizarre indentation created by VC 7.1.
Tim Peters <tim.peters@gmail.com>
parents:
36241
diff
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|
2322 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
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|
2323 size_t len; |
| 35742 | 2324 char *s; |
|
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|
2325 PyObject *uni; |
| 35742 | 2326 |
| 2327 len = 0; | |
| 2328 for (i = 0; i < NCH(n); i += 2) | |
| 2329 /* length of string plus one for the dot */ | |
| 2330 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2331 len--; /* the last name doesn't have a dot */ | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
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diff
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|
2332 str = PyBytes_FromStringAndSize(NULL, len); |
| 35742 | 2333 if (!str) |
| 2334 return NULL; | |
|
47301
23ab586c427a
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Christian Heimes <christian@cheimes.de>
parents:
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diff
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|
2335 s = PyBytes_AS_STRING(str); |
| 35742 | 2336 if (!s) |
| 2337 return NULL; | |
| 2338 for (i = 0; i < NCH(n); i += 2) { | |
| 2339 char *sch = STR(CHILD(n, i)); | |
| 2340 strcpy(s, STR(CHILD(n, i))); | |
| 2341 s += strlen(sch); | |
| 2342 *s++ = '.'; | |
| 2343 } | |
| 2344 --s; | |
| 2345 *s = '\0'; | |
|
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2346 uni = PyUnicode_DecodeUTF8(PyBytes_AS_STRING(str), |
|
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2347 PyBytes_GET_SIZE(str), |
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2348 NULL); |
|
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|
2349 Py_DECREF(str); |
|
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2350 if (!uni) |
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2351 return NULL; |
|
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|
2352 str = uni; |
|
42013
cd125fe83051
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diff
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|
2353 PyUnicode_InternInPlace(&str); |
|
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|
2354 PyArena_AddPyObject(c->c_arena, str); |
|
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|
2355 return alias(str, NULL, c->c_arena); |
| 35742 | 2356 } |
| 2357 break; | |
| 2358 case STAR: | |
|
42013
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|
2359 str = PyUnicode_InternFromString("*"); |
|
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|
2360 PyArena_AddPyObject(c->c_arena, str); |
|
36065
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parents:
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|
2361 return alias(str, NULL, c->c_arena); |
| 35742 | 2362 default: |
|
35870
f531c05cd240
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parents:
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|
2363 PyErr_Format(PyExc_SystemError, |
| 35742 | 2364 "unexpected import name: %d", TYPE(n)); |
| 2365 return NULL; | |
| 2366 } | |
|
36072
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|
2367 |
|
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|
2368 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2369 return NULL; |
| 2370 } | |
| 2371 | |
| 2372 static stmt_ty | |
| 2373 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2374 { | |
| 2375 /* | |
| 2376 import_stmt: import_name | import_from | |
| 2377 import_name: 'import' dotted_as_names | |
|
41235
6c8c33a43a15
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|
2378 import_from: 'from' (('.' | '...')* dotted_name | ('.' | '...')+) |
|
6c8c33a43a15
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|
2379 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2380 */ |
|
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changeset
|
2381 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2382 int col_offset; |
| 35742 | 2383 int i; |
| 2384 asdl_seq *aliases; | |
| 2385 | |
| 2386 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
|
2387 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2388 col_offset = n->n_col_offset; |
| 35742 | 2389 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2390 if (TYPE(n) == import_name) { |
| 35742 | 2391 n = CHILD(n, 1); |
|
40450
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parents:
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diff
changeset
|
2392 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2393 aliases = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2394 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
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|
2395 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2396 for (i = 0; i < NCH(n); i += 2) { |
|
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Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
2397 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2398 if (!import_alias) |
| 35742 | 2399 return NULL; |
|
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parents:
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diff
changeset
|
2400 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2401 } |
|
40450
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parents:
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diff
changeset
|
2402 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2403 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2404 else if (TYPE(n) == import_from) { |
| 35742 | 2405 int n_children; |
|
40450
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Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2406 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
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|
2407 alias_ty mod = NULL; |
|
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Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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diff
changeset
|
2408 identifier modname = NULL; |
|
61466
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|
2409 |
|
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5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2410 /* 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:
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diff
changeset
|
2411 optional module name */ |
|
40450
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parents:
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diff
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|
2412 for (idx = 1; idx < NCH(n); idx++) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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|
2413 if (TYPE(CHILD(n, idx)) == dotted_name) { |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
2414 mod = alias_for_import_name(c, CHILD(n, idx), 0); |
|
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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changeset
|
2415 if (!mod) |
|
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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parents:
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diff
changeset
|
2416 return NULL; |
|
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parents:
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|
2417 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2418 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2419 } else if (TYPE(CHILD(n, idx)) == ELLIPSIS) { |
|
61466
cab14be0ada1
Recorded merge of revisions 81029 via svnmerge from
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parents:
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diff
changeset
|
2420 /* three consecutive dots are tokenized as one ELLIPSIS */ |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2421 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
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changeset
|
2422 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2423 } else if (TYPE(CHILD(n, idx)) != DOT) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2424 break; |
|
cc992d75d5b3
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|
2425 } |
|
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parents:
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diff
changeset
|
2426 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2427 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2428 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
|
2429 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2430 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2431 /* from ... import * */ |
|
40450
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parents:
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changeset
|
2432 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
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|
2433 n_children = 1; |
|
cc992d75d5b3
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diff
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|
2434 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2435 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2436 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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changeset
|
2437 n = CHILD(n, idx + 1); |
|
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Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2438 n_children = NCH(n); |
|
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parents:
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diff
changeset
|
2439 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2440 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2441 /* from ... import x, y, z */ |
|
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Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2442 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2443 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2444 if (n_children % 2 == 0) { |
| 35742 | 2445 ast_error(n, "trailing comma not allowed without" |
| 2446 " surrounding parentheses"); | |
| 2447 return NULL; | |
| 2448 } | |
|
40450
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parents:
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diff
changeset
|
2449 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2450 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2451 ast_error(n, "Unexpected node-type in from-import"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2452 return NULL; |
|
cc992d75d5b3
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parents:
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diff
changeset
|
2453 } |
| 35742 | 2454 |
|
40450
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parents:
40215
diff
changeset
|
2455 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
|
2456 if (!aliases) |
| 35742 | 2457 return NULL; |
| 2458 | |
| 2459 /* 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
|
2460 if (TYPE(n) == STAR) { |
|
54918
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Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2461 alias_ty import_alias = alias_for_import_name(c, n, 1); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2462 if (!import_alias) |
| 35742 | 2463 return NULL; |
|
40450
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parents:
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diff
changeset
|
2464 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2465 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2466 else { |
|
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parents:
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diff
changeset
|
2467 for (i = 0; i < NCH(n); i += 2) { |
|
54918
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Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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parents:
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diff
changeset
|
2468 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1); |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2469 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2470 return NULL; |
|
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parents:
40215
diff
changeset
|
2471 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
|
2472 } |
| 35742 | 2473 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2474 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2475 modname = mod->name; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2476 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
|
2477 c->c_arena); |
| 35742 | 2478 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2479 PyErr_Format(PyExc_SystemError, |
| 35742 | 2480 "unknown import statement: starts with command '%s'", |
| 2481 STR(CHILD(n, 0))); | |
| 2482 return NULL; | |
| 2483 } | |
| 2484 | |
| 2485 static stmt_ty | |
| 2486 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2487 { | |
| 2488 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2489 identifier name; | |
| 2490 asdl_seq *s; | |
| 2491 int i; | |
| 2492 | |
| 2493 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
|
2494 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2495 if (!s) |
|
40450
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diff
changeset
|
2496 return NULL; |
| 35742 | 2497 for (i = 1; i < NCH(n); i += 2) { |
|
40450
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parents:
40215
diff
changeset
|
2498 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
cc992d75d5b3
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parents:
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diff
changeset
|
2499 if (!name) |
|
cc992d75d5b3
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diff
changeset
|
2500 return NULL; |
|
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parents:
40215
diff
changeset
|
2501 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2502 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2503 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2504 } |
| 2505 | |
| 2506 static stmt_ty | |
|
40965
30e5cb3a55ac
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parents:
40941
diff
changeset
|
2507 ast_for_nonlocal_stmt(struct compiling *c, const node *n) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
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parents:
40941
diff
changeset
|
2508 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2509 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2510 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2511 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2512 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2513 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
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parents:
40941
diff
changeset
|
2514 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2515 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
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parents:
40941
diff
changeset
|
2516 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2517 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2518 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2519 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2520 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2521 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2522 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2523 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2524 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
|
2525 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2526 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2527 static stmt_ty |
| 35742 | 2528 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2529 { | |
| 2530 /* assert_stmt: 'assert' test [',' test] */ | |
| 2531 REQ(n, assert_stmt); | |
| 2532 if (NCH(n) == 2) { | |
| 2533 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2534 if (!expression) | |
| 2535 return NULL; | |
|
40450
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2536 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2537 } |
| 2538 else if (NCH(n) == 4) { | |
| 2539 expr_ty expr1, expr2; | |
| 2540 | |
| 2541 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2542 if (!expr1) | |
| 2543 return NULL; | |
| 2544 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2545 if (!expr2) | |
| 2546 return NULL; | |
|
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changeset
|
2547 |
|
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cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2548 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2549 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2550 PyErr_Format(PyExc_SystemError, |
| 35742 | 2551 "improper number of parts to 'assert' statement: %d", |
| 2552 NCH(n)); | |
| 2553 return NULL; | |
| 2554 } | |
| 2555 | |
| 2556 static asdl_seq * | |
| 2557 ast_for_suite(struct compiling *c, const node *n) | |
| 2558 { | |
| 2559 /* suite: simple_stmt | NEWLINE INDENT stmt+ DEDENT */ | |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2560 asdl_seq *seq; |
| 35742 | 2561 stmt_ty s; |
| 2562 int i, total, num, end, pos = 0; | |
| 2563 node *ch; | |
| 2564 | |
| 2565 REQ(n, suite); | |
| 2566 | |
| 2567 total = num_stmts(n); | |
|
36065
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2568 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2569 if (!seq) |
|
40450
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parents:
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diff
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|
2570 return NULL; |
| 35742 | 2571 if (TYPE(CHILD(n, 0)) == simple_stmt) { |
|
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|
2572 n = CHILD(n, 0); |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2573 /* simple_stmt always ends with a NEWLINE, |
|
61466
cab14be0ada1
Recorded merge of revisions 81029 via svnmerge from
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diff
changeset
|
2574 and may have a trailing SEMI |
|
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|
2575 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2576 end = NCH(n) - 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2577 if (TYPE(CHILD(n, end - 1)) == SEMI) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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changeset
|
2578 end--; |
| 35742 | 2579 /* loop by 2 to skip semi-colons */ |
|
40450
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diff
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|
2580 for (i = 0; i < end; i += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2581 ch = CHILD(n, i); |
|
cc992d75d5b3
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parents:
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|
2582 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2583 if (!s) |
|
cc992d75d5b3
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parents:
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diff
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|
2584 return NULL; |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2585 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2586 } |
| 35742 | 2587 } |
| 2588 else { | |
|
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parents:
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diff
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|
2589 for (i = 2; i < (NCH(n) - 1); i++) { |
|
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Four months of trunk changes (including a few releases...)
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parents:
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|
2590 ch = CHILD(n, i); |
|
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Four months of trunk changes (including a few releases...)
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|
2591 REQ(ch, stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
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|
2592 num = num_stmts(ch); |
|
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Four months of trunk changes (including a few releases...)
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|
2593 if (num == 1) { |
|
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diff
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|
2594 /* small_stmt or compound_stmt with only one child */ |
|
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parents:
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|
2595 s = ast_for_stmt(c, ch); |
|
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|
2596 if (!s) |
|
cc992d75d5b3
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parents:
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diff
changeset
|
2597 return NULL; |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
2598 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
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parents:
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diff
changeset
|
2599 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2600 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2601 int j; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2602 ch = CHILD(ch, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2603 REQ(ch, simple_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2604 for (j = 0; j < NCH(ch); j += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2605 /* statement terminates with a semi-colon ';' */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2606 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
|
2607 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2608 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2609 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2610 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
|
2611 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2612 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2613 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
|
2614 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2615 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2616 } |
| 35742 | 2617 } |
| 2618 assert(pos == seq->size); | |
| 2619 return seq; | |
| 2620 } | |
| 2621 | |
| 2622 static stmt_ty | |
| 2623 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2624 { | |
| 2625 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2626 ['else' ':' suite] | |
| 2627 */ | |
| 2628 char *s; | |
| 2629 | |
| 2630 REQ(n, if_stmt); | |
| 2631 | |
| 2632 if (NCH(n) == 4) { | |
| 2633 expr_ty expression; | |
| 2634 asdl_seq *suite_seq; | |
| 2635 | |
| 2636 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2637 if (!expression) | |
| 2638 return NULL; | |
|
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cab14be0ada1
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parents:
56951
diff
changeset
|
2639 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
|
2640 if (!suite_seq) |
| 35742 | 2641 return NULL; |
|
61466
cab14be0ada1
Recorded merge of revisions 81029 via svnmerge from
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parents:
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diff
changeset
|
2642 |
|
41554
06145fbc7ab9
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parents:
41509
diff
changeset
|
2643 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
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diff
changeset
|
2644 c->c_arena); |
| 35742 | 2645 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2646 |
| 35742 | 2647 s = STR(CHILD(n, 4)); |
| 2648 /* s[2], the third character in the string, will be | |
| 2649 's' for el_s_e, or | |
| 2650 'i' for el_i_f | |
| 2651 */ | |
| 2652 if (s[2] == 's') { | |
| 2653 expr_ty expression; | |
| 2654 asdl_seq *seq1, *seq2; | |
| 2655 | |
| 2656 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2657 if (!expression) | |
| 2658 return NULL; | |
| 2659 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2660 if (!seq1) |
| 35742 | 2661 return NULL; |
| 2662 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2663 if (!seq2) |
| 35742 | 2664 return NULL; |
| 2665 | |
|
41554
06145fbc7ab9
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parents:
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diff
changeset
|
2666 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
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parents:
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diff
changeset
|
2667 c->c_arena); |
| 35742 | 2668 } |
| 2669 else if (s[2] == 'i') { | |
|
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changeset
|
2670 int i, n_elif, has_else = 0; |
|
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changeset
|
2671 expr_ty expression; |
|
06145fbc7ab9
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changeset
|
2672 asdl_seq *suite_seq; |
|
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|
2673 asdl_seq *orelse = NULL; |
|
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diff
changeset
|
2674 n_elif = NCH(n) - 4; |
| 35742 | 2675 /* must reference the child n_elif+1 since 'else' token is third, |
| 2676 not fourth, child from the end. */ | |
|
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|
2677 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
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changeset
|
2678 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
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changeset
|
2679 has_else = 1; |
|
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diff
changeset
|
2680 n_elif -= 3; |
|
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changeset
|
2681 } |
|
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diff
changeset
|
2682 n_elif /= 4; |
| 35742 | 2683 |
|
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|
2684 if (has_else) { |
|
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changeset
|
2685 asdl_seq *suite_seq2; |
| 35742 | 2686 |
|
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changeset
|
2687 orelse = asdl_seq_new(1, c->c_arena); |
|
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changeset
|
2688 if (!orelse) |
|
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diff
changeset
|
2689 return NULL; |
| 35742 | 2690 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2691 if (!expression) |
| 35742 | 2692 return NULL; |
|
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changeset
|
2693 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
06145fbc7ab9
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changeset
|
2694 if (!suite_seq) |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2695 return NULL; |
|
41554
06145fbc7ab9
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parents:
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diff
changeset
|
2696 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
06145fbc7ab9
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changeset
|
2697 if (!suite_seq2) |
| 35742 | 2698 return NULL; |
| 2699 | |
|
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|
2700 asdl_seq_SET(orelse, 0, |
|
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|
2701 If(expression, suite_seq, suite_seq2, |
|
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|
2702 LINENO(CHILD(n, NCH(n) - 6)), |
|
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2703 CHILD(n, NCH(n) - 6)->n_col_offset, |
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|
2704 c->c_arena)); |
|
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2705 /* the just-created orelse handled the last elif */ |
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2706 n_elif--; |
|
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2707 } |
| 35742 | 2708 |
|
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2709 for (i = 0; i < n_elif; i++) { |
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2710 int off = 5 + (n_elif - i - 1) * 4; |
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2711 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
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|
2712 if (!newobj) |
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2713 return NULL; |
| 35742 | 2714 expression = ast_for_expr(c, CHILD(n, off)); |
|
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2715 if (!expression) |
| 35742 | 2716 return NULL; |
| 2717 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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2718 if (!suite_seq) |
| 35742 | 2719 return NULL; |
| 2720 | |
|
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2721 asdl_seq_SET(newobj, 0, |
|
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|
2722 If(expression, suite_seq, orelse, |
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2723 LINENO(CHILD(n, off)), |
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2724 CHILD(n, off)->n_col_offset, c->c_arena)); |
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2725 orelse = newobj; |
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2726 } |
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2727 expression = ast_for_expr(c, CHILD(n, 1)); |
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2728 if (!expression) |
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2729 return NULL; |
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2730 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
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2731 if (!suite_seq) |
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2732 return NULL; |
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2733 return If(expression, suite_seq, orelse, |
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2734 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2735 } |
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2736 |
|
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2737 PyErr_Format(PyExc_SystemError, |
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|
2738 "unexpected token in 'if' statement: %s", s); |
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Cleanup a bit and make things more consistent.
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2739 return NULL; |
| 35742 | 2740 } |
| 2741 | |
| 2742 static stmt_ty | |
| 2743 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2744 { | |
| 2745 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2746 REQ(n, while_stmt); | |
| 2747 | |
| 2748 if (NCH(n) == 4) { | |
| 2749 expr_ty expression; | |
| 2750 asdl_seq *suite_seq; | |
| 2751 | |
| 2752 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2753 if (!expression) | |
| 2754 return NULL; | |
| 2755 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2756 if (!suite_seq) |
| 35742 | 2757 return NULL; |
|
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2758 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2759 } |
| 2760 else if (NCH(n) == 7) { | |
| 2761 expr_ty expression; | |
| 2762 asdl_seq *seq1, *seq2; | |
| 2763 | |
| 2764 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2765 if (!expression) | |
| 2766 return NULL; | |
| 2767 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2768 if (!seq1) |
| 35742 | 2769 return NULL; |
| 2770 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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|
2771 if (!seq2) |
| 35742 | 2772 return NULL; |
| 2773 | |
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2774 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2775 } |
|
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2776 |
|
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|
2777 PyErr_Format(PyExc_SystemError, |
|
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|
2778 "wrong number of tokens for 'while' statement: %d", |
|
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2779 NCH(n)); |
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2780 return NULL; |
| 35742 | 2781 } |
| 2782 | |
| 2783 static stmt_ty | |
| 2784 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2785 { | |
|
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2786 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2787 expr_ty expression; |
|
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2788 expr_ty target, first; |
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|
2789 const node *node_target; |
| 35742 | 2790 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2791 REQ(n, for_stmt); | |
| 2792 | |
| 2793 if (NCH(n) == 9) { | |
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2794 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2795 if (!seq) |
| 2796 return NULL; | |
| 2797 } | |
| 2798 | |
|
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2799 node_target = CHILD(n, 1); |
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2800 _target = ast_for_exprlist(c, node_target, Store); |
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2801 if (!_target) |
| 35742 | 2802 return NULL; |
|
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2803 /* Check the # of children rather than the length of _target, since |
|
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2804 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
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2805 first = (expr_ty)asdl_seq_GET(_target, 0); |
|
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2806 if (NCH(node_target) == 1) |
|
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2807 target = first; |
| 35742 | 2808 else |
|
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|
2809 target = Tuple(_target, Store, first->lineno, first->col_offset, c->c_arena); |
| 35742 | 2810 |
|
35798
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|
2811 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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|
2812 if (!expression) |
| 35742 | 2813 return NULL; |
| 2814 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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|
2815 if (!suite_seq) |
| 35742 | 2816 return NULL; |
| 2817 | |
|
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|
2818 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
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|
2819 c->c_arena); |
| 35742 | 2820 } |
| 2821 | |
| 2822 static excepthandler_ty | |
| 2823 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2824 { | |
|
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|
2825 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2826 REQ(exc, except_clause); |
| 2827 REQ(body, suite); | |
| 2828 | |
| 2829 if (NCH(exc) == 1) { | |
| 2830 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2831 if (!suite_seq) | |
| 2832 return NULL; | |
| 2833 | |
|
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|
2834 return ExceptHandler(NULL, NULL, suite_seq, LINENO(exc), |
|
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|
2835 exc->n_col_offset, c->c_arena); |
| 35742 | 2836 } |
| 2837 else if (NCH(exc) == 2) { | |
| 2838 expr_ty expression; | |
| 2839 asdl_seq *suite_seq; | |
| 2840 | |
| 2841 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2842 if (!expression) | |
| 2843 return NULL; | |
| 2844 suite_seq = ast_for_suite(c, body); | |
|
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|
2845 if (!suite_seq) |
| 35742 | 2846 return NULL; |
| 2847 | |
|
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|
2848 return ExceptHandler(expression, NULL, suite_seq, LINENO(exc), |
|
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|
2849 exc->n_col_offset, c->c_arena); |
| 35742 | 2850 } |
| 2851 else if (NCH(exc) == 4) { | |
| 2852 asdl_seq *suite_seq; | |
| 2853 expr_ty expression; | |
|
40588
4bab65fcca8e
Some more changes related to the new except syntax and semantics,
Guido van Rossum <guido@python.org>
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40529
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|
2854 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
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|
2855 if (!e) |
| 35742 | 2856 return NULL; |
|
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|
2857 if (forbidden_name(e, CHILD(exc, 3), 0)) |
|
c45e331238ae
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|
2858 return NULL; |
|
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|
2859 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
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|
2860 if (!expression) |
|
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|
2861 return NULL; |
| 35742 | 2862 suite_seq = ast_for_suite(c, body); |
|
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|
2863 if (!suite_seq) |
| 35742 | 2864 return NULL; |
| 2865 | |
|
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|
2866 return ExceptHandler(expression, e, suite_seq, LINENO(exc), |
|
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|
2867 exc->n_col_offset, c->c_arena); |
| 35742 | 2868 } |
|
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|
2869 |
|
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changeset
|
2870 PyErr_Format(PyExc_SystemError, |
|
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diff
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|
2871 "wrong number of children for 'except' clause: %d", |
|
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changeset
|
2872 NCH(exc)); |
|
de16a85c3b4c
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diff
changeset
|
2873 return NULL; |
| 35742 | 2874 } |
| 2875 | |
| 2876 static stmt_ty | |
| 2877 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2878 { | |
|
36066
719ba02d2e2c
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diff
changeset
|
2879 const int nch = NCH(n); |
|
719ba02d2e2c
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parents:
36065
diff
changeset
|
2880 int n_except = (nch - 3)/3; |
|
719ba02d2e2c
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parents:
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diff
changeset
|
2881 asdl_seq *body, *orelse = NULL, *finally = NULL; |
|
719ba02d2e2c
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parents:
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diff
changeset
|
2882 |
| 35742 | 2883 REQ(n, try_stmt); |
| 2884 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2885 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
|
2886 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
|
2887 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2888 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2889 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
|
2890 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
|
2891 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
|
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 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
|
2894 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
|
2895 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
|
2896 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
|
2897 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2898 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2899 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2900 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2901 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
|
2902 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
|
2903 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2904 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2905 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2906 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2907 /* 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
|
2908 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
|
2909 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
|
2910 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
|
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 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2913 } |
| 35742 | 2914 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2915 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
|
2916 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2917 return NULL; |
| 2918 } | |
|
61466
cab14be0ada1
Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents:
56951
diff
changeset
|
2919 |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2920 if (n_except > 0) { |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2921 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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changeset
|
2922 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
|
2923 /* 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
|
2924 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
|
2925 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
|
2926 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2927 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2928 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
|
2929 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
|
2930 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
|
2931 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2932 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2933 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
|
2934 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2935 |
|
40450
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2936 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
|
2937 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
|
2938 if (!finally) |
|
40450
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2939 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
|
2940 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2941 /* 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
|
2942 TryFinally to emulate try ... except ... finally */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2943 body = asdl_seq_new(1, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2944 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2945 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2946 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
|
2947 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2948 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2949 /* 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
|
2950 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
|
2951 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2952 } |
| 2953 | |
|
54338
287ce30d08b5
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Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
2954 /* with_item: test ['as' expr] */ |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2955 static stmt_ty |
|
54338
287ce30d08b5
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Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2956 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
|
2957 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2958 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2959 |
|
54338
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diff
changeset
|
2960 REQ(n, with_item); |
|
287ce30d08b5
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parents:
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diff
changeset
|
2961 context_expr = ast_for_expr(c, CHILD(n, 0)); |
|
64178
5fd26f452600
Check the return values for all functions returning an ast node.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
62373
diff
changeset
|
2962 if (!context_expr) |
|
5fd26f452600
Check the return values for all functions returning an ast node.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
62373
diff
changeset
|
2963 return NULL; |
|
54338
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diff
changeset
|
2964 if (NCH(n) == 3) { |
|
287ce30d08b5
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parents:
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diff
changeset
|
2965 optional_vars = ast_for_expr(c, CHILD(n, 2)); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2966 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2967 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2968 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2969 } |
|
46664
031dfe455585
Merged revisions 62425-62429,62434-62436,62441,62444,62446-62448,62450-62455,62463,62465-62466,62469,62474,62476-62478,62480,62485,62492,62497-62498,62500,62507,62513-62514,62516,62521,62531,62535,62545-62546,62548-62551,62553-62559,62569,62574,62577,62593,62595,62604-62606,62608,62616,62626-62627,62636,62638,62644-62645,62647-62648,62651-62653,62656,62661,62663,62680,62686-62687,62696,62699-62703,62711 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
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diff
changeset
|
2970 if (!set_context(c, optional_vars, Store, n)) { |
|
40450
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parents:
40215
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changeset
|
2971 return NULL; |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2972 } |
|
36695
b6d2f6fd3e11
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Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2973 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2974 |
|
54338
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diff
changeset
|
2975 return With(context_expr, optional_vars, content, LINENO(n), |
|
287ce30d08b5
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53707
diff
changeset
|
2976 n->n_col_offset, c->c_arena); |
|
287ce30d08b5
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diff
changeset
|
2977 } |
|
287ce30d08b5
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parents:
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diff
changeset
|
2978 |
|
287ce30d08b5
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parents:
53707
diff
changeset
|
2979 /* with_stmt: 'with' with_item (',' with_item)* ':' suite */ |
|
287ce30d08b5
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diff
changeset
|
2980 static stmt_ty |
|
287ce30d08b5
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53707
diff
changeset
|
2981 ast_for_with_stmt(struct compiling *c, const node *n) |
|
287ce30d08b5
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parents:
53707
diff
changeset
|
2982 { |
|
287ce30d08b5
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parents:
53707
diff
changeset
|
2983 int i; |
|
287ce30d08b5
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Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2984 stmt_ty ret; |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2985 asdl_seq *inner; |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
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diff
changeset
|
2986 |
|
287ce30d08b5
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Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2987 REQ(n, with_stmt); |
|
287ce30d08b5
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parents:
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diff
changeset
|
2988 |
|
287ce30d08b5
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|
2989 /* process the with items inside-out */ |
|
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|
2990 i = NCH(n) - 1; |
|
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|
2991 /* the suite of the innermost with item is the suite of the with stmt */ |
|
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|
2992 inner = ast_for_suite(c, CHILD(n, i)); |
|
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|
2993 if (!inner) |
|
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PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
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|
2994 return NULL; |
|
54338
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2995 |
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|
2996 for (;;) { |
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|
2997 i -= 2; |
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|
2998 ret = ast_for_with_item(c, CHILD(n, i), inner); |
|
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|
2999 if (!ret) |
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|
3000 return NULL; |
|
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|
3001 /* was this the last item? */ |
|
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|
3002 if (i == 1) |
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|
3003 break; |
|
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|
3004 /* if not, wrap the result so far in a new sequence */ |
|
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|
3005 inner = asdl_seq_new(1, c->c_arena); |
|
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|
3006 if (!inner) |
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|
3007 return NULL; |
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|
3008 asdl_seq_SET(inner, 0, ret); |
|
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parents:
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|
3009 } |
|
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3010 |
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|
3011 return ret; |
|
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PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
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|
3012 } |
|
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Guido van Rossum <guido@python.org>
parents:
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|
3013 |
| 35742 | 3014 static stmt_ty |
|
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|
3015 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 3016 { |
|
41226
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|
3017 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
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|
3018 PyObject *classname; |
|
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|
3019 asdl_seq *s; |
|
49852
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|
3020 expr_ty call; |
|
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|
3021 |
| 35742 | 3022 REQ(n, classdef); |
| 3023 | |
|
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parents:
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|
3024 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 3025 s = ast_for_suite(c, CHILD(n, 3)); |
| 3026 if (!s) | |
| 3027 return NULL; | |
|
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3028 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
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3029 if (!classname) |
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3030 return NULL; |
|
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parents:
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|
3031 if (forbidden_name(classname, CHILD(n, 3), 0)) |
|
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|
3032 return NULL; |
|
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3033 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
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3034 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3035 } |
|
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3036 |
|
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parents:
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|
3037 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
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|
3038 s = ast_for_suite(c, CHILD(n,5)); |
|
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3039 if (!s) |
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3040 return NULL; |
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3041 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
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3042 if (!classname) |
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|
3043 return NULL; |
|
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parents:
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|
3044 if (forbidden_name(classname, CHILD(n, 3), 0)) |
|
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In most cases, the parser will protect True, False, and None from being assign to.
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|
3045 return NULL; |
|
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3046 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
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|
3047 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3048 } |
| 3049 | |
|
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parents:
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|
3050 /* class NAME '(' arglist ')' ':' suite */ |
|
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Guido van Rossum <guido@python.org>
parents:
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|
3051 /* build up a fake Call node so we can extract its pieces */ |
|
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3052 { |
|
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|
3053 PyObject *dummy_name; |
|
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|
3054 expr_ty dummy; |
|
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|
3055 dummy_name = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3056 if (!dummy_name) |
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|
3057 return NULL; |
|
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|
3058 dummy = Name(dummy_name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
3059 call = ast_for_call(c, CHILD(n, 3), dummy); |
|
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|
3060 if (!call) |
|
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|
3061 return NULL; |
|
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|
3062 } |
| 35742 | 3063 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
|
3064 if (!s) |
| 35742 | 3065 return NULL; |
|
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|
3066 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
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|
3067 if (!classname) |
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|
3068 return NULL; |
|
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|
3069 if (forbidden_name(classname, CHILD(n, 1), 0)) |
|
c45e331238ae
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parents:
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|
3070 return NULL; |
|
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|
3071 |
|
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|
3072 return ClassDef(classname, call->v.Call.args, call->v.Call.keywords, |
|
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|
3073 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
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|
3074 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3075 } |
| 3076 | |
| 3077 static stmt_ty | |
| 3078 ast_for_stmt(struct compiling *c, const node *n) | |
| 3079 { | |
| 3080 if (TYPE(n) == stmt) { | |
|
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|
3081 assert(NCH(n) == 1); |
|
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|
3082 n = CHILD(n, 0); |
| 35742 | 3083 } |
| 3084 if (TYPE(n) == simple_stmt) { | |
|
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|
3085 assert(num_stmts(n) == 1); |
|
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|
3086 n = CHILD(n, 0); |
| 35742 | 3087 } |
| 3088 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
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parents:
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diff
changeset
|
3089 n = CHILD(n, 0); |
|
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parents:
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diff
changeset
|
3090 /* small_stmt: expr_stmt | del_stmt | pass_stmt | flow_stmt |
|
30e5cb3a55ac
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diff
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|
3091 | import_stmt | global_stmt | nonlocal_stmt | assert_stmt |
|
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|
3092 */ |
|
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|
3093 switch (TYPE(n)) { |
| 35742 | 3094 case expr_stmt: |
| 3095 return ast_for_expr_stmt(c, n); | |
| 3096 case del_stmt: | |
| 3097 return ast_for_del_stmt(c, n); | |
| 3098 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
|
3099 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3100 case flow_stmt: |
| 3101 return ast_for_flow_stmt(c, n); | |
| 3102 case import_stmt: | |
| 3103 return ast_for_import_stmt(c, n); | |
| 3104 case global_stmt: | |
| 3105 return ast_for_global_stmt(c, n); | |
|
40965
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parents:
40941
diff
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|
3106 case nonlocal_stmt: |
|
30e5cb3a55ac
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parents:
40941
diff
changeset
|
3107 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3108 case assert_stmt: |
| 3109 return ast_for_assert_stmt(c, n); | |
| 3110 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3111 PyErr_Format(PyExc_SystemError, |
| 35742 | 3112 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3113 TYPE(n), NCH(n)); | |
| 3114 return NULL; | |
| 3115 } | |
| 3116 } | |
| 3117 else { | |
| 3118 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
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|
3119 | funcdef | classdef | decorated |
|
40450
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|
3120 */ |
|
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|
3121 node *ch = CHILD(n, 0); |
|
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|
3122 REQ(n, compound_stmt); |
|
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40215
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|
3123 switch (TYPE(ch)) { |
| 35742 | 3124 case if_stmt: |
| 3125 return ast_for_if_stmt(c, ch); | |
| 3126 case while_stmt: | |
| 3127 return ast_for_while_stmt(c, ch); | |
| 3128 case for_stmt: | |
| 3129 return ast_for_for_stmt(c, ch); | |
| 3130 case try_stmt: | |
| 3131 return ast_for_try_stmt(c, ch); | |
|
36695
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|
3132 case with_stmt: |
|
b6d2f6fd3e11
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parents:
36686
diff
changeset
|
3133 return ast_for_with_stmt(c, ch); |
| 35742 | 3134 case funcdef: |
|
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|
3135 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3136 case classdef: |
|
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|
3137 return ast_for_classdef(c, ch, NULL); |
|
61466
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|
3138 case decorated: |
|
cab14be0ada1
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changeset
|
3139 return ast_for_decorated(c, ch); |
| 35742 | 3140 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3141 PyErr_Format(PyExc_SystemError, |
| 35742 | 3142 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3143 TYPE(n), NCH(n)); | |
| 3144 return NULL; | |
|
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Four months of trunk changes (including a few releases...)
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|
3145 } |
| 35742 | 3146 } |
| 3147 } | |
| 3148 | |
| 3149 static PyObject * | |
|
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|
3150 parsenumber(struct compiling *c, const char *s) |
| 35742 | 3151 { |
|
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|
3152 const char *end; |
|
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|
3153 long x; |
|
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|
3154 double dx; |
|
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|
3155 Py_complex compl; |
|
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|
3156 int imflag; |
| 35742 | 3157 |
|
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3158 assert(s != NULL); |
|
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3159 errno = 0; |
|
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3160 end = s + strlen(s) - 1; |
|
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|
3161 imflag = *end == 'j' || *end == 'J'; |
|
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|
3162 if (s[0] == '0') { |
|
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|
3163 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
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|
3164 if (x < 0 && errno == 0) { |
|
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|
3165 return PyLong_FromString((char *)s, |
|
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|
3166 (char **)0, |
|
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|
3167 0); |
|
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|
3168 } |
|
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3169 } |
|
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|
3170 else |
|
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|
3171 x = PyOS_strtol((char *)s, (char **)&end, 0); |
|
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|
3172 if (*end == '\0') { |
|
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|
3173 if (errno != 0) |
|
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|
3174 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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|
3175 return PyLong_FromLong(x); |
|
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|
3176 } |
|
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|
3177 /* XXX Huge floats may silently fail */ |
|
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|
3178 if (imflag) { |
|
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|
3179 compl.real = 0.; |
|
53707
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Issue #5914: Add new C-API function PyOS_string_to_double, to complement
Mark Dickinson <dickinsm@gmail.com>
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|
3180 compl.imag = PyOS_string_to_double(s, (char **)&end, NULL); |
|
13a82a710f19
Issue #5914: Add new C-API function PyOS_string_to_double, to complement
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|
3181 if (compl.imag == -1.0 && PyErr_Occurred()) |
|
13a82a710f19
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|
3182 return NULL; |
|
13a82a710f19
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|
3183 return PyComplex_FromCComplex(compl); |
|
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|
3184 } |
|
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|
3185 else |
|
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|
3186 { |
|
53707
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|
3187 dx = PyOS_string_to_double(s, NULL, NULL); |
|
13a82a710f19
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|
3188 if (dx == -1.0 && PyErr_Occurred()) |
|
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|
3189 return NULL; |
|
13a82a710f19
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|
3190 return PyFloat_FromDouble(dx); |
|
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|
3191 } |
| 35742 | 3192 } |
| 3193 | |
| 3194 static PyObject * | |
|
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|
3195 decode_utf8(struct compiling *c, const char **sPtr, const char *end, char* encoding) |
| 35742 | 3196 { |
|
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|
3197 PyObject *u, *v; |
|
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|
3198 char *s, *t; |
|
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|
3199 t = s = (char *)*sPtr; |
|
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|
3200 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
|
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|
3201 while (s < end && (*s & 0x80)) s++; |
|
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|
3202 *sPtr = s; |
|
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|
3203 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
|
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|
3204 if (u == NULL) |
|
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|
3205 return NULL; |
|
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|
3206 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
|
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|
3207 Py_DECREF(u); |
|
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|
3208 return v; |
| 35742 | 3209 } |
| 3210 | |
| 3211 static PyObject * | |
|
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|
3212 decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, const char *encoding) |
| 35742 | 3213 { |
|
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|
3214 PyObject *v, *u; |
|
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|
3215 char *buf; |
|
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|
3216 char *p; |
|
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|
3217 const char *end; |
|
43819
068655054b0d
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|
3218 |
|
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|
3219 if (encoding == NULL) { |
|
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|
3220 buf = (char *)s; |
|
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|
3221 u = NULL; |
|
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|
3222 } else { |
|
48330
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|
3223 /* check for integer overflow */ |
|
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|
3224 if (len > PY_SIZE_MAX / 6) |
|
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|
3225 return NULL; |
|
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|
3226 /* "ä" (2 bytes) may become "\U000000E4" (10 bytes), or 1:5 |
|
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|
3227 "\ä" (3 bytes) may become "\u005c\U000000E4" (16 bytes), or ~1:6 */ |
|
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|
3228 u = PyBytes_FromStringAndSize((char *)NULL, len * 6); |
|
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3229 if (u == NULL) |
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|
3230 return NULL; |
|
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|
3231 p = buf = PyBytes_AsString(u); |
|
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3232 end = s + len; |
|
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3233 while (s < end) { |
|
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|
3234 if (*s == '\\') { |
|
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|
3235 *p++ = *s++; |
|
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3236 if (*s & 0x80) { |
|
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|
3237 strcpy(p, "u005c"); |
|
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|
3238 p += 5; |
|
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|
3239 } |
|
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|
3240 } |
|
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|
3241 if (*s & 0x80) { /* XXX inefficient */ |
|
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|
3242 PyObject *w; |
|
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|
3243 char *r; |
|
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|
3244 Py_ssize_t rn, i; |
|
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|
3245 w = decode_utf8(c, &s, end, "utf-32-be"); |
|
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|
3246 if (w == NULL) { |
|
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|
3247 Py_DECREF(u); |
|
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|
3248 return NULL; |
|
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|
3249 } |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
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|
3250 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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44246
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changeset
|
3251 rn = Py_SIZE(w); |
|
56951
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Benjamin Peterson <benjamin@python.org>
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|
3252 assert(rn % 4 == 0); |
|
db4dfdc74029
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|
3253 for (i = 0; i < rn; i += 4) { |
|
db4dfdc74029
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|
3254 sprintf(p, "\\U%02x%02x%02x%02x", |
|
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|
3255 r[i + 0] & 0xFF, |
|
56951
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|
3256 r[i + 1] & 0xFF, |
|
db4dfdc74029
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|
3257 r[i + 2] & 0xFF, |
|
db4dfdc74029
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|
3258 r[i + 3] & 0xFF); |
|
db4dfdc74029
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|
3259 p += 10; |
|
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|
3260 } |
|
56951
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|
3261 /* Should be impossible to overflow */ |
|
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|
3262 assert(p - buf <= Py_SIZE(u)); |
|
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|
3263 Py_DECREF(w); |
|
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|
3264 } else { |
|
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|
3265 *p++ = *s++; |
|
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|
3266 } |
|
40450
cc992d75d5b3
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|
3267 } |
|
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|
3268 len = p - buf; |
|
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3269 s = buf; |
|
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|
3270 } |
|
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|
3271 if (rawmode) |
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|
3272 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
|
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3273 else |
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|
3274 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
|
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|
3275 Py_XDECREF(u); |
|
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|
3276 return v; |
| 35742 | 3277 } |
| 3278 | |
| 3279 /* 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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|
3280 * and r &/or b prefixes (if any), and embedded escape sequences (if any). |
| 35742 | 3281 * parsestr parses it, and returns the decoded Python string object. |
| 3282 */ | |
| 3283 static PyObject * | |
|
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|
3284 parsestr(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3285 { |
|
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|
3286 size_t len; |
|
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|
3287 const char *s = STR(n); |
|
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|
3288 int quote = Py_CHARMASK(*s); |
|
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|
3289 int rawmode = 0; |
|
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|
3290 int need_encoding; |
|
43777
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Guido van Rossum <guido@python.org>
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|
3291 if (isalpha(quote)) { |
|
41554
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|
3292 if (quote == 'b' || quote == 'B') { |
|
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|
3293 quote = *++s; |
|
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|
3294 *bytesmode = 1; |
|
61466
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|
3295 } |
|
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|
3296 if (quote == 'r' || quote == 'R') { |
|
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|
3297 quote = *++s; |
|
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|
3298 rawmode = 1; |
|
40450
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|
3299 } |
|
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|
3300 } |
|
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|
3301 if (quote != '\'' && quote != '\"') { |
|
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|
3302 PyErr_BadInternalCall(); |
|
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|
3303 return NULL; |
|
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|
3304 } |
|
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|
3305 s++; |
|
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|
3306 len = strlen(s); |
|
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|
3307 if (len > INT_MAX) { |
|
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|
3308 PyErr_SetString(PyExc_OverflowError, |
|
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|
3309 "string to parse is too long"); |
|
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|
3310 return NULL; |
|
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|
3311 } |
|
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|
3312 if (s[--len] != quote) { |
|
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|
3313 PyErr_BadInternalCall(); |
|
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|
3314 return NULL; |
|
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|
3315 } |
|
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|
3316 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
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|
3317 s += 2; |
|
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|
3318 len -= 2; |
|
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|
3319 if (s[--len] != quote || s[--len] != quote) { |
|
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|
3320 PyErr_BadInternalCall(); |
|
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|
3321 return NULL; |
| 40894 | 3322 } |
|
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|
3323 } |
|
46306
b10292eafb07
Reverted r62128 on Guido's orders
Benjamin Peterson <benjamin@python.org>
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|
3324 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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|
3325 return decode_unicode(c, s, len, rawmode, c->c_encoding); |
|
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|
3326 } |
|
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|
3327 if (*bytesmode) { |
|
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|
3328 /* Disallow non-ascii characters (but not escapes) */ |
|
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|
3329 const char *c; |
|
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|
3330 for (c = s; *c; c++) { |
|
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|
3331 if (Py_CHARMASK(*c) >= 0x80) { |
|
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|
3332 ast_error(n, "bytes can only contain ASCII " |
|
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|
3333 "literal characters."); |
|
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|
3334 return NULL; |
|
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|
3335 } |
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|
3336 } |
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|
3337 } |
|
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|
3338 need_encoding = (!*bytesmode && c->c_encoding != NULL && |
|
49539
481ad3d9ffd1
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|
3339 strcmp(c->c_encoding, "utf-8") != 0); |
|
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|
3340 if (rawmode || strchr(s, '\\') == NULL) { |
|
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|
3341 if (need_encoding) { |
|
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|
3342 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
|
43819
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|
3343 if (u == NULL || !*bytesmode) |
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|
3344 return u; |
|
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|
3345 v = PyUnicode_AsEncodedString(u, c->c_encoding, NULL); |
|
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|
3346 Py_DECREF(u); |
|
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|
3347 return v; |
|
43819
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|
3348 } else if (*bytesmode) { |
|
47301
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Christian Heimes <christian@cheimes.de>
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|
3349 return PyBytes_FromStringAndSize(s, len); |
|
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|
3350 } else if (strcmp(c->c_encoding, "utf-8") == 0) { |
|
43819
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|
3351 return PyUnicode_FromStringAndSize(s, len); |
|
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|
3352 } else { |
|
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|
3353 return PyUnicode_DecodeLatin1(s, len, NULL); |
|
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|
3354 } |
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|
3355 } |
|
47301
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|
3356 return PyBytes_DecodeEscape(s, len, NULL, 1, |
|
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|
3357 need_encoding ? c->c_encoding : NULL); |
| 35742 | 3358 } |
| 3359 | |
|
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changeset
|
3360 /* Build a Python string object out of a STRING+ atom. This takes care of |
| 35742 | 3361 * compile-time literal catenation, calling parsestr() on each piece, and |
| 3362 * pasting the intermediate results together. | |
| 3363 */ | |
| 3364 static PyObject * | |
| 40894 | 3365 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3366 { |
|
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3367 PyObject *v; |
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3368 int i; |
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3369 REQ(CHILD(n, 0), STRING); |
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3370 v = parsestr(c, CHILD(n, 0), bytesmode); |
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3371 if (v != NULL) { |
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3372 /* String literal concatenation */ |
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3373 for (i = 1; i < NCH(n); i++) { |
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3374 PyObject *s; |
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3375 int subbm = 0; |
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3376 s = parsestr(c, CHILD(n, i), &subbm); |
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3377 if (s == NULL) |
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3378 goto onError; |
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3379 if (*bytesmode != subbm) { |
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3380 ast_error(n, "cannot mix bytes and nonbytes literals"); |
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3381 goto onError; |
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3382 } |
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3383 if (PyBytes_Check(v) && PyBytes_Check(s)) { |
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3384 PyBytes_ConcatAndDel(&v, s); |
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3385 if (v == NULL) |
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3386 goto onError; |
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3387 } |
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3388 else { |
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3389 PyObject *temp = PyUnicode_Concat(v, s); |
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3390 Py_DECREF(s); |
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3391 Py_DECREF(v); |
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3392 v = temp; |
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3393 if (v == NULL) |
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3394 goto onError; |
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3395 } |
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40450
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Four months of trunk changes (including a few releases...)
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3396 } |
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3397 } |
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3398 return v; |
| 35742 | 3399 |
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3400 onError: |
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3401 Py_XDECREF(v); |
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3402 return NULL; |
| 35742 | 3403 } |