Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 44156:fb84bd9500a4
Remove special-casing of integer operations, to stop
using PyInt_CheckExact.
| author | Martin v. Löwis <martin@v.loewis.de> |
|---|---|
| date | Tue, 04 Dec 2007 20:34:12 +0000 |
| parents | f324631462a2 |
| children | 44a24b59b16d |
| rev | line source |
|---|---|
| 35742 | 1 /* |
| 2 * This file includes functions to transform a concrete syntax tree (CST) to | |
| 3 * an abstract syntax tree (AST). The main function is PyAST_FromNode(). | |
| 4 * | |
| 5 */ | |
| 6 #include "Python.h" | |
| 7 #include "Python-ast.h" | |
| 8 #include "grammar.h" | |
| 9 #include "node.h" | |
|
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10 #include "pyarena.h" |
| 35742 | 11 #include "ast.h" |
| 12 #include "token.h" | |
| 13 #include "parsetok.h" | |
| 14 #include "graminit.h" | |
| 15 | |
| 16 #include <assert.h> | |
| 17 | |
| 18 /* Data structure used internally */ | |
| 19 struct compiling { | |
|
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20 char *c_encoding; /* source encoding */ |
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21 PyArena *c_arena; /* arena for allocating memeory */ |
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22 const char *c_filename; /* filename */ |
| 35742 | 23 }; |
| 24 | |
| 25 static asdl_seq *seq_for_testlist(struct compiling *, const node *); | |
| 26 static expr_ty ast_for_expr(struct compiling *, const node *); | |
| 27 static stmt_ty ast_for_stmt(struct compiling *, const node *); | |
| 28 static asdl_seq *ast_for_suite(struct compiling *, const node *); | |
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29 static asdl_seq *ast_for_exprlist(struct compiling *, const node *, |
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30 expr_context_ty); |
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31 static expr_ty ast_for_testlist(struct compiling *, const node *); |
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32 static stmt_ty ast_for_classdef(struct compiling *, const node *, asdl_seq *); |
| 35742 | 33 |
| 34 /* Note different signature for ast_for_call */ | |
| 35 static expr_ty ast_for_call(struct compiling *, const node *, expr_ty); | |
| 36 | |
| 37 static PyObject *parsenumber(const char *); | |
| 40894 | 38 static PyObject *parsestr(const node *n, const char *encoding, int *bytesmode); |
| 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 = PyUnicode_AS_UNICODE(id); |
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55 /* Check whether there are non-ASCII characters in the |
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56 identifier; if so, normalize to NFKC. */ |
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57 for (; *u; u++) { |
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58 if (*u >= 128) { |
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59 PyObject *m = PyImport_ImportModule("unicodedata"); |
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60 PyObject *id2; |
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61 if (!m) |
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62 return NULL; |
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63 id2 = PyObject_CallMethod(m, "normalize", "sO", "NFKC", id); |
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64 Py_DECREF(m); |
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65 if (!id2) |
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66 return NULL; |
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67 Py_DECREF(id); |
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68 id = id2; |
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69 break; |
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70 } |
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71 } |
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72 PyUnicode_InternInPlace(&id); |
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73 PyArena_AddPyObject(arena, id); |
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74 return id; |
| 35742 | 75 } |
| 76 | |
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77 #define NEW_IDENTIFIER(n) new_identifier(STR(n), c->c_arena) |
| 35742 | 78 |
| 79 /* This routine provides an invalid object for the syntax error. | |
| 80 The outermost routine must unpack this error and create the | |
| 81 proper object. We do this so that we don't have to pass | |
| 82 the filename to everything function. | |
| 83 | |
| 84 XXX Maybe we should just pass the filename... | |
| 85 */ | |
| 86 | |
| 87 static int | |
| 88 ast_error(const node *n, const char *errstr) | |
| 89 { | |
| 90 PyObject *u = Py_BuildValue("zi", errstr, LINENO(n)); | |
| 91 if (!u) | |
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92 return 0; |
| 35742 | 93 PyErr_SetObject(PyExc_SyntaxError, u); |
| 94 Py_DECREF(u); | |
| 95 return 0; | |
| 96 } | |
| 97 | |
| 98 static void | |
| 99 ast_error_finish(const char *filename) | |
| 100 { | |
| 101 PyObject *type, *value, *tback, *errstr, *loc, *tmp; | |
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102 long lineno; |
| 35742 | 103 |
| 104 assert(PyErr_Occurred()); | |
| 105 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
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106 return; |
| 35742 | 107 |
| 108 PyErr_Fetch(&type, &value, &tback); | |
| 109 errstr = PyTuple_GetItem(value, 0); | |
| 110 if (!errstr) | |
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111 return; |
| 35742 | 112 Py_INCREF(errstr); |
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113 lineno = PyLong_AsLong(PyTuple_GetItem(value, 1)); |
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114 if (lineno == -1) { |
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115 Py_DECREF(errstr); |
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116 return; |
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117 } |
| 35742 | 118 Py_DECREF(value); |
| 119 | |
| 120 loc = PyErr_ProgramText(filename, lineno); | |
| 121 if (!loc) { | |
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122 Py_INCREF(Py_None); |
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123 loc = Py_None; |
| 35742 | 124 } |
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125 tmp = Py_BuildValue("(zlOO)", filename, lineno, Py_None, loc); |
| 35742 | 126 Py_DECREF(loc); |
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127 if (!tmp) { |
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128 Py_DECREF(errstr); |
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129 return; |
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130 } |
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131 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 132 Py_DECREF(errstr); |
| 133 Py_DECREF(tmp); | |
| 134 if (!value) | |
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135 return; |
| 35742 | 136 PyErr_Restore(type, value, tback); |
| 137 } | |
| 138 | |
| 139 /* num_stmts() returns number of contained statements. | |
| 140 | |
| 141 Use this routine to determine how big a sequence is needed for | |
| 142 the statements in a parse tree. Its raison d'etre is this bit of | |
| 143 grammar: | |
| 144 | |
| 145 stmt: simple_stmt | compound_stmt | |
| 146 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 147 | |
| 148 A simple_stmt can contain multiple small_stmt elements joined | |
| 149 by semicolons. If the arg is a simple_stmt, the number of | |
| 150 small_stmt elements is returned. | |
| 151 */ | |
| 152 | |
| 153 static int | |
| 154 num_stmts(const node *n) | |
| 155 { | |
| 156 int i, l; | |
| 157 node *ch; | |
| 158 | |
| 159 switch (TYPE(n)) { | |
| 160 case single_input: | |
| 161 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 162 return 0; | |
| 163 else | |
| 164 return num_stmts(CHILD(n, 0)); | |
| 165 case file_input: | |
| 166 l = 0; | |
| 167 for (i = 0; i < NCH(n); i++) { | |
| 168 ch = CHILD(n, i); | |
| 169 if (TYPE(ch) == stmt) | |
| 170 l += num_stmts(ch); | |
| 171 } | |
| 172 return l; | |
| 173 case stmt: | |
| 174 return num_stmts(CHILD(n, 0)); | |
| 175 case compound_stmt: | |
| 176 return 1; | |
| 177 case simple_stmt: | |
| 178 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 179 case suite: | |
| 180 if (NCH(n) == 1) | |
| 181 return num_stmts(CHILD(n, 0)); | |
| 182 else { | |
| 183 l = 0; | |
| 184 for (i = 2; i < (NCH(n) - 1); i++) | |
| 185 l += num_stmts(CHILD(n, i)); | |
| 186 return l; | |
| 187 } | |
| 188 default: { | |
| 189 char buf[128]; | |
| 190 | |
| 191 sprintf(buf, "Non-statement found: %d %d\n", | |
| 192 TYPE(n), NCH(n)); | |
| 193 Py_FatalError(buf); | |
| 194 } | |
| 195 } | |
| 196 assert(0); | |
| 197 return 0; | |
| 198 } | |
| 199 | |
| 200 /* Transform the CST rooted at node * to the appropriate AST | |
| 201 */ | |
| 202 | |
| 203 mod_ty | |
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204 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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205 PyArena *arena) |
| 35742 | 206 { |
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207 int i, j, k, num; |
| 35742 | 208 asdl_seq *stmts = NULL; |
| 209 stmt_ty s; | |
| 210 node *ch; | |
| 211 struct compiling c; | |
| 212 | |
| 213 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
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214 c.c_encoding = "utf-8"; |
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215 if (TYPE(n) == encoding_decl) { |
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216 #if 0 |
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217 ast_error(n, "encoding declaration in Unicode string"); |
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218 goto error; |
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219 #endif |
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220 n = CHILD(n, 0); |
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221 } |
| 35742 | 222 } else if (TYPE(n) == encoding_decl) { |
| 223 c.c_encoding = STR(n); | |
| 224 n = CHILD(n, 0); | |
| 225 } else { | |
| 42403 | 226 /* PEP 3120 */ |
| 227 c.c_encoding = "utf-8"; | |
| 35742 | 228 } |
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229 c.c_arena = arena; |
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230 c.c_filename = filename; |
| 35742 | 231 |
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232 k = 0; |
| 35742 | 233 switch (TYPE(n)) { |
| 234 case file_input: | |
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235 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 236 if (!stmts) |
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237 return NULL; |
| 35742 | 238 for (i = 0; i < NCH(n) - 1; i++) { |
| 239 ch = CHILD(n, i); | |
| 240 if (TYPE(ch) == NEWLINE) | |
| 241 continue; | |
| 242 REQ(ch, stmt); | |
| 243 num = num_stmts(ch); | |
| 244 if (num == 1) { | |
| 245 s = ast_for_stmt(&c, ch); | |
| 246 if (!s) | |
| 247 goto error; | |
|
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248 asdl_seq_SET(stmts, k++, s); |
| 35742 | 249 } |
| 250 else { | |
| 251 ch = CHILD(ch, 0); | |
| 252 REQ(ch, simple_stmt); | |
| 253 for (j = 0; j < num; j++) { | |
| 254 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 255 if (!s) | |
| 256 goto error; | |
|
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257 asdl_seq_SET(stmts, k++, s); |
| 35742 | 258 } |
| 259 } | |
| 260 } | |
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261 return Module(stmts, arena); |
| 35742 | 262 case eval_input: { |
| 263 expr_ty testlist_ast; | |
| 264 | |
|
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265 /* XXX Why not comp_for here? */ |
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266 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 267 if (!testlist_ast) |
| 268 goto error; | |
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269 return Expression(testlist_ast, arena); |
| 35742 | 270 } |
| 271 case single_input: | |
| 272 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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273 stmts = asdl_seq_new(1, arena); |
| 35742 | 274 if (!stmts) |
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275 goto error; |
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276 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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277 arena)); |
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278 if (!asdl_seq_GET(stmts, 0)) |
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279 goto error; |
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280 return Interactive(stmts, arena); |
| 35742 | 281 } |
| 282 else { | |
| 283 n = CHILD(n, 0); | |
| 284 num = num_stmts(n); | |
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285 stmts = asdl_seq_new(num, arena); |
| 35742 | 286 if (!stmts) |
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287 goto error; |
| 35742 | 288 if (num == 1) { |
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289 s = ast_for_stmt(&c, n); |
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290 if (!s) |
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291 goto error; |
| 35742 | 292 asdl_seq_SET(stmts, 0, s); |
| 293 } | |
| 294 else { | |
| 295 /* Only a simple_stmt can contain multiple statements. */ | |
| 296 REQ(n, simple_stmt); | |
| 297 for (i = 0; i < NCH(n); i += 2) { | |
| 298 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 299 break; | |
| 300 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 301 if (!s) | |
| 302 goto error; | |
| 303 asdl_seq_SET(stmts, i / 2, s); | |
| 304 } | |
| 305 } | |
| 306 | |
|
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307 return Interactive(stmts, arena); |
| 35742 | 308 } |
| 309 default: | |
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310 PyErr_Format(PyExc_SystemError, |
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311 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 312 goto error; |
| 313 } | |
| 314 error: | |
| 315 ast_error_finish(filename); | |
| 316 return NULL; | |
| 317 } | |
| 318 | |
| 319 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 320 */ | |
| 321 | |
| 322 static operator_ty | |
| 323 get_operator(const node *n) | |
| 324 { | |
| 325 switch (TYPE(n)) { | |
| 326 case VBAR: | |
| 327 return BitOr; | |
| 328 case CIRCUMFLEX: | |
| 329 return BitXor; | |
| 330 case AMPER: | |
| 331 return BitAnd; | |
| 332 case LEFTSHIFT: | |
| 333 return LShift; | |
| 334 case RIGHTSHIFT: | |
| 335 return RShift; | |
| 336 case PLUS: | |
| 337 return Add; | |
| 338 case MINUS: | |
| 339 return Sub; | |
| 340 case STAR: | |
| 341 return Mult; | |
| 342 case SLASH: | |
| 343 return Div; | |
| 344 case DOUBLESLASH: | |
| 345 return FloorDiv; | |
| 346 case PERCENT: | |
| 347 return Mod; | |
| 348 default: | |
|
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349 return (operator_ty)0; |
| 35742 | 350 } |
| 351 } | |
| 352 | |
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353 static const char* FORBIDDEN[] = { |
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354 "None", |
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355 "True", |
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356 "False", |
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357 NULL, |
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358 }; |
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359 |
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360 static int |
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361 forbidden_name(expr_ty e, const node *n) |
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362 { |
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363 const char **p; |
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364 assert(PyUnicode_Check(e->v.Name.id)); |
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365 for (p = FORBIDDEN; *p; p++) { |
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366 if (PyUnicode_CompareWithASCIIString(e->v.Name.id, *p) == 0) { |
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367 ast_error(n, "assignment to keyword"); |
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368 return 1; |
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369 } |
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370 } |
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371 return 0; |
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372 } |
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373 |
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374 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 375 |
| 376 Only sets context for expr kinds that "can appear in assignment context" | |
| 377 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 378 an appropriate syntax error and returns false. | |
| 379 */ | |
| 380 | |
| 381 static int | |
| 382 set_context(expr_ty e, expr_context_ty ctx, const node *n) | |
| 383 { | |
| 384 asdl_seq *s = NULL; | |
|
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385 /* If a particular expression type can't be used for assign / delete, |
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386 set expr_name to its name and an error message will be generated. |
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387 */ |
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388 const char* expr_name = NULL; |
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389 |
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390 /* The ast defines augmented store and load contexts, but the |
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391 implementation here doesn't actually use them. The code may be |
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392 a little more complex than necessary as a result. It also means |
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393 that expressions in an augmented assignment have a Store context. |
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394 Consider restructuring so that augmented assignment uses |
|
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395 set_context(), too. |
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396 */ |
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397 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 398 |
| 399 switch (e->kind) { | |
| 400 case Attribute_kind: | |
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401 e->v.Attribute.ctx = ctx; |
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402 break; |
| 35742 | 403 case Subscript_kind: |
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404 e->v.Subscript.ctx = ctx; |
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405 break; |
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406 case Starred_kind: |
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407 e->v.Starred.ctx = ctx; |
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408 if (!set_context(e->v.Starred.value, ctx, n)) |
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409 return 0; |
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410 break; |
| 35742 | 411 case Name_kind: |
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412 if (ctx == Store) { |
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413 if (forbidden_name(e, n)) |
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414 return 0; /* forbidden_name() calls ast_error() */ |
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415 } |
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416 e->v.Name.ctx = ctx; |
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417 break; |
| 35742 | 418 case List_kind: |
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419 e->v.List.ctx = ctx; |
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420 s = e->v.List.elts; |
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421 break; |
| 35742 | 422 case Tuple_kind: |
| 423 if (asdl_seq_LEN(e->v.Tuple.elts) == 0) | |
| 424 return ast_error(n, "can't assign to ()"); | |
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425 e->v.Tuple.ctx = ctx; |
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426 s = e->v.Tuple.elts; |
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427 break; |
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428 case Lambda_kind: |
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429 expr_name = "lambda"; |
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430 break; |
| 35742 | 431 case Call_kind: |
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432 expr_name = "function call"; |
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433 break; |
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434 case BoolOp_kind: |
| 35742 | 435 case BinOp_kind: |
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436 case UnaryOp_kind: |
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437 expr_name = "operator"; |
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438 break; |
| 35742 | 439 case GeneratorExp_kind: |
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440 expr_name = "generator expression"; |
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441 break; |
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442 case Yield_kind: |
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443 expr_name = "yield expression"; |
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445 case ListComp_kind: |
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446 expr_name = "list comprehension"; |
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448 case SetComp_kind: |
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449 expr_name = "set comprehension"; |
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451 case DictComp_kind: |
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452 expr_name = "dict comprehension"; |
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454 case Dict_kind: |
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455 case Set_kind: |
| 35742 | 456 case Num_kind: |
| 457 case Str_kind: | |
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458 expr_name = "literal"; |
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459 break; |
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460 case Ellipsis_kind: |
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461 expr_name = "Ellipsis"; |
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462 break; |
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463 case Compare_kind: |
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464 expr_name = "comparison"; |
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465 break; |
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466 case IfExp_kind: |
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467 expr_name = "conditional expression"; |
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468 break; |
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469 default: |
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470 PyErr_Format(PyExc_SystemError, |
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471 "unexpected expression in assignment %d (line %d)", |
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472 e->kind, e->lineno); |
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473 return 0; |
| 35742 | 474 } |
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475 /* Check for error string set by switch */ |
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476 if (expr_name) { |
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477 char buf[300]; |
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478 PyOS_snprintf(buf, sizeof(buf), |
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479 "can't %s %s", |
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480 ctx == Store ? "assign to" : "delete", |
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481 expr_name); |
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482 return ast_error(n, buf); |
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483 } |
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484 |
| 35742 | 485 /* If the LHS is a list or tuple, we need to set the assignment |
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486 context for all the contained elements. |
| 35742 | 487 */ |
| 488 if (s) { | |
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489 int i; |
| 35742 | 490 |
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491 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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492 if (!set_context((expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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493 return 0; |
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494 } |
| 35742 | 495 } |
| 496 return 1; | |
| 497 } | |
| 498 | |
| 499 static operator_ty | |
| 500 ast_for_augassign(const node *n) | |
| 501 { | |
| 502 REQ(n, augassign); | |
| 503 n = CHILD(n, 0); | |
| 504 switch (STR(n)[0]) { | |
| 505 case '+': | |
| 506 return Add; | |
| 507 case '-': | |
| 508 return Sub; | |
| 509 case '/': | |
| 510 if (STR(n)[1] == '/') | |
| 511 return FloorDiv; | |
| 512 else | |
| 513 return Div; | |
| 514 case '%': | |
| 515 return Mod; | |
| 516 case '<': | |
| 517 return LShift; | |
| 518 case '>': | |
| 519 return RShift; | |
| 520 case '&': | |
| 521 return BitAnd; | |
| 522 case '^': | |
| 523 return BitXor; | |
| 524 case '|': | |
| 525 return BitOr; | |
| 526 case '*': | |
| 527 if (STR(n)[1] == '*') | |
| 528 return Pow; | |
| 529 else | |
| 530 return Mult; | |
| 531 default: | |
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532 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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533 return (operator_ty)0; |
| 35742 | 534 } |
| 535 } | |
| 536 | |
| 537 static cmpop_ty | |
| 538 ast_for_comp_op(const node *n) | |
| 539 { | |
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540 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 541 |'is' 'not' |
| 542 */ | |
| 543 REQ(n, comp_op); | |
| 544 if (NCH(n) == 1) { | |
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545 n = CHILD(n, 0); |
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546 switch (TYPE(n)) { |
| 35742 | 547 case LESS: |
| 548 return Lt; | |
| 549 case GREATER: | |
| 550 return Gt; | |
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551 case EQEQUAL: /* == */ |
| 35742 | 552 return Eq; |
| 553 case LESSEQUAL: | |
| 554 return LtE; | |
| 555 case GREATEREQUAL: | |
| 556 return GtE; | |
| 557 case NOTEQUAL: | |
| 558 return NotEq; | |
| 559 case NAME: | |
| 560 if (strcmp(STR(n), "in") == 0) | |
| 561 return In; | |
| 562 if (strcmp(STR(n), "is") == 0) | |
| 563 return Is; | |
| 564 default: | |
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565 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 566 STR(n)); |
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567 return (cmpop_ty)0; |
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568 } |
| 35742 | 569 } |
| 570 else if (NCH(n) == 2) { | |
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571 /* handle "not in" and "is not" */ |
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572 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 573 case NAME: |
| 574 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 575 return NotIn; | |
| 576 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 577 return IsNot; | |
| 578 default: | |
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579 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 580 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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581 return (cmpop_ty)0; |
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582 } |
| 35742 | 583 } |
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584 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 585 NCH(n)); |
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586 return (cmpop_ty)0; |
| 35742 | 587 } |
| 588 | |
| 589 static asdl_seq * | |
| 590 seq_for_testlist(struct compiling *c, const node *n) | |
| 591 { | |
| 592 /* testlist: test (',' test)* [','] */ | |
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593 asdl_seq *seq; |
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594 expr_ty expression; |
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595 int i; |
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596 assert(TYPE(n) == testlist || TYPE(n) == testlist_comp); |
| 35742 | 597 |
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598 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 599 if (!seq) |
| 600 return NULL; | |
| 601 | |
| 602 for (i = 0; i < NCH(n); i += 2) { | |
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603 assert(TYPE(CHILD(n, i)) == test || TYPE(CHILD(n, i)) == test_nocond); |
| 35742 | 604 |
| 605 expression = ast_for_expr(c, CHILD(n, i)); | |
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606 if (!expression) |
| 35742 | 607 return NULL; |
| 608 | |
| 609 assert(i / 2 < seq->size); | |
| 610 asdl_seq_SET(seq, i / 2, expression); | |
| 611 } | |
| 612 return seq; | |
| 613 } | |
| 614 | |
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615 static arg_ty |
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616 compiler_arg(struct compiling *c, const node *n) |
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617 { |
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618 identifier name; |
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619 expr_ty annotation = NULL; |
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620 node *ch; |
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621 |
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622 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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623 ch = CHILD(n, 0); |
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624 name = NEW_IDENTIFIER(ch); |
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625 if (!name) |
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626 return NULL; |
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627 |
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628 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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629 annotation = ast_for_expr(c, CHILD(n, 2)); |
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630 if (!annotation) |
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631 return NULL; |
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632 } |
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633 |
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634 return arg(name, annotation, c->c_arena); |
| 35742 | 635 } |
| 636 | |
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637 /* returns -1 if failed to handle keyword only arguments |
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638 returns new position to keep processing if successful |
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639 (',' tfpdef ['=' test])* |
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640 ^^^ |
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641 start pointing here |
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642 */ |
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643 static int |
|
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644 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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645 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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646 { |
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647 node *ch; |
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648 expr_ty expression, annotation; |
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649 arg_ty arg; |
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650 int i = start; |
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651 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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652 assert(kwonlyargs != NULL); |
|
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Jiwon Seo's PEP 3102 implementation.
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653 assert(kwdefaults != NULL); |
|
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654 while (i < NCH(n)) { |
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655 ch = CHILD(n, i); |
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656 switch (TYPE(ch)) { |
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657 case vfpdef: |
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658 case tfpdef: |
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659 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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660 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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661 asdl_seq_SET(kwdefaults, j, expression); |
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662 i += 2; /* '=' and test */ |
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663 } |
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664 else { /* setting NULL if no default value exists */ |
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665 asdl_seq_SET(kwdefaults, j, NULL); |
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666 } |
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667 if (NCH(ch) == 3) { |
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668 /* ch is NAME ':' test */ |
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669 annotation = ast_for_expr(c, CHILD(ch, 2)); |
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670 if (!annotation) { |
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671 ast_error(ch, "expected expression"); |
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672 goto error; |
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673 } |
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674 } |
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675 else { |
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676 annotation = NULL; |
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677 } |
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678 ch = CHILD(ch, 0); |
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679 arg = arg(NEW_IDENTIFIER(ch), annotation, c->c_arena); |
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680 if (!arg) { |
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681 ast_error(ch, "expecting name"); |
|
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|
682 goto error; |
|
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683 } |
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684 asdl_seq_SET(kwonlyargs, j++, arg); |
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685 i += 2; /* the name and the comma */ |
|
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|
686 break; |
|
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|
687 case DOUBLESTAR: |
|
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688 return i; |
|
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689 default: |
|
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|
690 ast_error(ch, "unexpected node"); |
|
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|
691 goto error; |
|
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|
692 } |
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|
693 } |
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|
694 return i; |
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Jiwon Seo's PEP 3102 implementation.
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|
695 error: |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
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|
696 return -1; |
|
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|
697 } |
| 35742 | 698 |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
699 /* Create AST for argument list. */ |
| 35742 | 700 |
| 701 static arguments_ty | |
| 702 ast_for_arguments(struct compiling *c, const node *n) | |
| 703 { | |
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704 /* This function handles both typedargslist (function definition) |
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|
705 and varargslist (lambda definition). |
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|
706 |
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changeset
|
707 parameters: '(' [typedargslist] ')' |
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|
708 typedargslist: ((tfpdef ['=' test] ',')* |
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709 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
|
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|
710 | '**' tfpdef) |
|
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711 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
|
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|
712 tfpdef: NAME [':' test] |
|
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|
713 varargslist: ((vfpdef ['=' test] ',')* |
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|
714 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
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changeset
|
715 | '**' vfpdef) |
|
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716 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
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Merged revisions 55328-55341 via svnmerge from
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|
717 vfpdef: NAME |
| 35742 | 718 */ |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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changeset
|
719 int i, j, k, nposargs = 0, nkwonlyargs = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
720 int nposdefaults = 0, found_default = 0; |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
721 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 722 identifier vararg = NULL, kwarg = NULL; |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
723 arg_ty arg; |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
724 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 725 node *ch; |
| 726 | |
| 727 if (TYPE(n) == parameters) { | |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
728 if (NCH(n) == 2) /* () as argument list */ |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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changeset
|
729 return arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
730 NULL, c->c_arena); |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
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|
731 n = CHILD(n, 1); |
| 35742 | 732 } |
|
40529
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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changeset
|
733 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 734 |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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changeset
|
735 /* first count the number of positional args & defaults */ |
| 35742 | 736 for (i = 0; i < NCH(n); i++) { |
|
40215
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Jiwon Seo's PEP 3102 implementation.
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|
737 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
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changeset
|
738 if (TYPE(ch) == STAR) { |
|
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changeset
|
739 /* skip star and possible argument */ |
|
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Guido van Rossum <guido@python.org>
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|
740 i++; |
|
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|
741 i += (TYPE(CHILD(n, i)) == tfpdef |
|
9ad84070b22d
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|
742 || TYPE(CHILD(n, i)) == vfpdef); |
|
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parents:
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|
743 break; |
|
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Guido van Rossum <guido@python.org>
parents:
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|
744 } |
|
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|
745 if (TYPE(ch) == DOUBLESTAR) break; |
|
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parents:
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changeset
|
746 if (TYPE(ch) == vfpdef || TYPE(ch) == tfpdef) nposargs++; |
|
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|
747 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
1cce0526d9b0
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changeset
|
748 } |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
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diff
changeset
|
749 /* count the number of keyword only args & |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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|
750 defaults for keyword only args */ |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
751 for ( ; i < NCH(n); ++i) { |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
752 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
753 if (TYPE(ch) == DOUBLESTAR) break; |
|
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|
754 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 755 } |
|
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|
756 posargs = (nposargs ? asdl_seq_new(nposargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
757 if (!posargs && nposargs) |
|
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parents:
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diff
changeset
|
758 goto error; |
|
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changeset
|
759 kwonlyargs = (nkwonlyargs ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
760 asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
39783
diff
changeset
|
761 if (!kwonlyargs && nkwonlyargs) |
|
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parents:
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changeset
|
762 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
763 posdefaults = (nposdefaults ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
764 asdl_seq_new(nposdefaults, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
765 if (!posdefaults && nposdefaults) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
766 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
767 /* The length of kwonlyargs and kwdefaults are same |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
768 since we set NULL as default for keyword only argument w/o default |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
769 - we have sequence data structure, but no dictionary */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
770 kwdefaults = (nkwonlyargs ? |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
771 asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
772 if (!kwdefaults && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
773 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
774 |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
775 if (nposargs + nkwonlyargs > 255) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
776 ast_error(n, "more than 255 arguments"); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
777 return NULL; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
778 } |
| 35742 | 779 |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
780 /* tfpdef: NAME [':' test] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
781 vfpdef: NAME |
| 35742 | 782 */ |
| 783 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
784 j = 0; /* index for defaults */ |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
785 k = 0; /* index for args */ |
| 35742 | 786 while (i < NCH(n)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
787 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
788 switch (TYPE(ch)) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
789 case tfpdef: |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
790 case vfpdef: |
| 35742 | 791 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 792 anything other than EQUAL or a comma? */ | |
| 793 /* XXX Should NCH(n) check be made a separate check? */ | |
| 794 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
795 expr_ty expression = ast_for_expr(c, CHILD(n, i + 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
796 if (!expression) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
797 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
798 assert(posdefaults != NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
799 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 800 i += 2; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
801 found_default = 1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
802 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
803 else if (found_default) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
804 ast_error(n, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
805 "non-default argument follows default argument"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
806 goto error; |
| 35742 | 807 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
808 arg = compiler_arg(c, ch); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
809 if (!arg) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
810 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
811 asdl_seq_SET(posargs, k++, arg); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
812 |
| 35742 | 813 i += 2; /* the name and the comma */ |
| 814 break; | |
| 815 case STAR: | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
816 if (i+1 >= NCH(n)) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
817 ast_error(CHILD(n, i), "no name for vararg"); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
818 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
819 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
820 ch = CHILD(n, i+1); /* tfpdef or COMMA */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
821 if (TYPE(ch) == COMMA) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
822 int res = 0; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
823 i += 2; /* now follows keyword only arguments */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
824 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
825 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
826 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
827 i = res; /* res has new position to process */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
828 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
829 else { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
830 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
831 if (NCH(ch) > 1) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
832 /* there is an annotation on the vararg */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
833 varargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
834 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
835 i += 3; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
836 if (i < NCH(n) && (TYPE(CHILD(n, i)) == tfpdef |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
837 || TYPE(CHILD(n, i)) == vfpdef)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
838 int res = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
839 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
840 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
841 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
842 i = res; /* res has new position to process */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
843 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
844 } |
| 35742 | 845 break; |
| 846 case DOUBLESTAR: | |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
847 ch = CHILD(n, i+1); /* tfpdef */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
848 assert(TYPE(ch) == tfpdef || TYPE(ch) == vfpdef); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
849 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
850 if (NCH(ch) > 1) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
851 /* there is an annotation on the kwarg */ |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
852 kwargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
853 } |
| 35742 | 854 i += 3; |
| 855 break; | |
| 856 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
857 PyErr_Format(PyExc_SystemError, |
| 35742 | 858 "unexpected node in varargslist: %d @ %d", |
| 859 TYPE(ch), i); | |
| 860 goto error; | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
861 } |
| 35742 | 862 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
863 return arguments(posargs, vararg, varargannotation, kwonlyargs, kwarg, |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
864 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 865 error: |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
866 Py_XDECREF(vararg); |
|
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
867 Py_XDECREF(kwarg); |
| 35742 | 868 return NULL; |
| 869 } | |
| 870 | |
| 871 static expr_ty | |
| 872 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 873 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
874 expr_ty e; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
875 identifier id; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
876 int lineno, col_offset; |
| 35742 | 877 int i; |
| 878 | |
| 879 REQ(n, dotted_name); | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
880 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
881 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
882 col_offset = n->n_col_offset; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
883 |
| 35742 | 884 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 885 if (!id) | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
886 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
887 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 888 if (!e) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
889 return NULL; |
| 35742 | 890 |
| 891 for (i = 2; i < NCH(n); i+=2) { | |
| 892 id = NEW_IDENTIFIER(CHILD(n, i)); | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
893 if (!id) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
894 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
895 e = Attribute(e, id, Load, lineno, col_offset, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
896 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
897 return NULL; |
| 35742 | 898 } |
| 899 | |
| 900 return e; | |
| 901 } | |
| 902 | |
| 903 static expr_ty | |
| 904 ast_for_decorator(struct compiling *c, const node *n) | |
| 905 { | |
| 906 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 907 expr_ty d = NULL; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
908 expr_ty name_expr; |
| 35742 | 909 |
| 910 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
911 REQ(CHILD(n, 0), AT); |
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912 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 913 |
| 914 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 915 if (!name_expr) | |
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916 return NULL; |
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917 |
| 35742 | 918 if (NCH(n) == 3) { /* No arguments */ |
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919 d = name_expr; |
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920 name_expr = NULL; |
| 35742 | 921 } |
| 922 else if (NCH(n) == 5) { /* Call with no arguments */ | |
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923 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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924 n->n_col_offset, c->c_arena); |
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925 if (!d) |
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926 return NULL; |
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927 name_expr = NULL; |
| 35742 | 928 } |
| 929 else { | |
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930 d = ast_for_call(c, CHILD(n, 3), name_expr); |
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931 if (!d) |
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932 return NULL; |
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933 name_expr = NULL; |
| 35742 | 934 } |
| 935 | |
| 936 return d; | |
| 937 } | |
| 938 | |
| 939 static asdl_seq* | |
| 940 ast_for_decorators(struct compiling *c, const node *n) | |
| 941 { | |
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942 asdl_seq* decorator_seq; |
|
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|
943 expr_ty d; |
| 35742 | 944 int i; |
| 945 | |
| 946 REQ(n, decorators); | |
|
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947 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 948 if (!decorator_seq) |
| 949 return NULL; | |
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950 |
| 35742 | 951 for (i = 0; i < NCH(n); i++) { |
|
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952 d = ast_for_decorator(c, CHILD(n, i)); |
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953 if (!d) |
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954 return NULL; |
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955 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 956 } |
| 957 return decorator_seq; | |
| 958 } | |
| 959 | |
| 960 static stmt_ty | |
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961 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 962 { |
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963 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
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964 identifier name; |
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965 arguments_ty args; |
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966 asdl_seq *body; |
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967 expr_ty returns = NULL; |
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968 int name_i = 1; |
| 35742 | 969 |
| 970 REQ(n, funcdef); | |
| 971 | |
| 972 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 973 if (!name) | |
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974 return NULL; |
| 35742 | 975 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 976 if (!args) | |
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977 return NULL; |
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978 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
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979 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
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980 if (!returns) |
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981 return NULL; |
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982 name_i += 2; |
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983 } |
| 35742 | 984 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 985 if (!body) | |
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986 return NULL; |
| 35742 | 987 |
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988 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
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989 n->n_col_offset, c->c_arena); |
| 35742 | 990 } |
| 991 | |
|
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992 static stmt_ty |
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993 ast_for_decorated(struct compiling *c, const node *n) |
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994 { |
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995 /* decorated: decorators (classdef | funcdef) */ |
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996 stmt_ty thing = NULL; |
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997 asdl_seq *decorator_seq = NULL; |
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998 |
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999 REQ(n, decorated); |
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|
1000 |
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1001 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
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1002 if (!decorator_seq) |
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1003 return NULL; |
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1004 |
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1005 assert(TYPE(CHILD(n, 1)) == funcdef || |
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1006 TYPE(CHILD(n, 1)) == classdef); |
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1007 |
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1008 if (TYPE(CHILD(n, 1)) == funcdef) { |
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1009 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
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1010 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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1011 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
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1012 } |
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1013 return thing; |
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1014 } |
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1015 |
| 35742 | 1016 static expr_ty |
| 1017 ast_for_lambdef(struct compiling *c, const node *n) | |
| 1018 { | |
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1019 /* lambdef: 'lambda' [varargslist] ':' test |
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1020 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1021 arguments_ty args; |
| 1022 expr_ty expression; | |
| 1023 | |
| 1024 if (NCH(n) == 3) { | |
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1025 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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1026 NULL, c->c_arena); |
| 35742 | 1027 if (!args) |
| 1028 return NULL; | |
| 1029 expression = ast_for_expr(c, CHILD(n, 2)); | |
|
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1030 if (!expression) |
| 35742 | 1031 return NULL; |
| 1032 } | |
| 1033 else { | |
| 1034 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1035 if (!args) | |
| 1036 return NULL; | |
| 1037 expression = ast_for_expr(c, CHILD(n, 3)); | |
|
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1038 if (!expression) |
| 35742 | 1039 return NULL; |
| 1040 } | |
| 1041 | |
|
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1042 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1043 } |
| 1044 | |
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1045 static expr_ty |
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1046 ast_for_ifexpr(struct compiling *c, const node *n) |
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1047 { |
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1048 /* test: or_test 'if' or_test 'else' test */ |
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1049 expr_ty expression, body, orelse; |
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1050 |
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1051 assert(NCH(n) == 5); |
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1052 body = ast_for_expr(c, CHILD(n, 0)); |
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1053 if (!body) |
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1054 return NULL; |
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1055 expression = ast_for_expr(c, CHILD(n, 2)); |
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1056 if (!expression) |
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1057 return NULL; |
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1058 orelse = ast_for_expr(c, CHILD(n, 4)); |
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1059 if (!orelse) |
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1060 return NULL; |
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1061 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
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1062 c->c_arena); |
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1063 } |
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1064 |
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1065 /* |
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1066 Count the number of 'for' loops in a comprehension. |
| 35742 | 1067 |
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1068 Helper for ast_for_comprehension(). |
| 35742 | 1069 */ |
| 1070 | |
| 1071 static int | |
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1072 count_comp_fors(const node *n) |
| 35742 | 1073 { |
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1074 int n_fors = 0; |
| 35742 | 1075 |
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1076 count_comp_for: |
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1077 n_fors++; |
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1078 REQ(n, comp_for); |
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1079 if (NCH(n) == 5) |
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1080 n = CHILD(n, 4); |
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1081 else |
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1082 return n_fors; |
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1083 count_comp_iter: |
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1084 REQ(n, comp_iter); |
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1085 n = CHILD(n, 0); |
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1086 if (TYPE(n) == comp_for) |
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1087 goto count_comp_for; |
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1088 else if (TYPE(n) == comp_if) { |
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1089 if (NCH(n) == 3) { |
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1090 n = CHILD(n, 2); |
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1091 goto count_comp_iter; |
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1092 } |
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1093 else |
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1094 return n_fors; |
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1095 } |
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1096 |
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1097 /* Should never be reached */ |
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1098 PyErr_SetString(PyExc_SystemError, |
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1099 "logic error in count_comp_fors"); |
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1100 return -1; |
| 35742 | 1101 } |
| 1102 | |
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1103 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1104 |
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1105 Helper for ast_for_comprehension(). |
| 35742 | 1106 */ |
| 1107 | |
| 1108 static int | |
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1109 count_comp_ifs(const node *n) |
| 35742 | 1110 { |
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1111 int n_ifs = 0; |
| 35742 | 1112 |
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1113 while (1) { |
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1114 REQ(n, comp_iter); |
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1115 if (TYPE(CHILD(n, 0)) == comp_for) |
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1116 return n_ifs; |
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1117 n = CHILD(n, 0); |
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1118 REQ(n, comp_if); |
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1119 n_ifs++; |
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1120 if (NCH(n) == 2) |
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1121 return n_ifs; |
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1122 n = CHILD(n, 2); |
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1123 } |
| 35742 | 1124 } |
| 1125 | |
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1126 static asdl_seq * |
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1127 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1128 { |
| 1129 int i, n_fors; | |
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1130 asdl_seq *comps; |
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1131 |
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1132 n_fors = count_comp_fors(n); |
| 35742 | 1133 if (n_fors == -1) |
| 1134 return NULL; | |
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1135 |
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1136 comps = asdl_seq_new(n_fors, c->c_arena); |
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1137 if (!comps) |
| 35742 | 1138 return NULL; |
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1139 |
| 35742 | 1140 for (i = 0; i < n_fors; i++) { |
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1141 comprehension_ty comp; |
| 35742 | 1142 asdl_seq *t; |
| 1143 expr_ty expression; | |
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1144 node *for_ch; |
| 35742 | 1145 |
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1146 REQ(n, comp_for); |
| 35742 | 1147 |
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1148 for_ch = CHILD(n, 1); |
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1149 t = ast_for_exprlist(c, for_ch, Store); |
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1150 if (!t) |
| 35742 | 1151 return NULL; |
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1152 expression = ast_for_expr(c, CHILD(n, 3)); |
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1153 if (!expression) |
| 35742 | 1154 return NULL; |
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1155 |
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1156 /* Check the # of children rather than the length of t, since |
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1157 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
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1158 if (NCH(for_ch) == 1) |
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1159 comp = comprehension((expr_ty)asdl_seq_GET(t, 0), expression, |
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1160 NULL, c->c_arena); |
| 35742 | 1161 else |
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1162 comp = comprehension(Tuple(t, Store, LINENO(n), n->n_col_offset, |
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1163 c->c_arena), |
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1164 expression, NULL, c->c_arena); |
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1165 |
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1166 if (!comp) |
| 35742 | 1167 return NULL; |
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1168 |
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1169 if (NCH(n) == 5) { |
| 35742 | 1170 int j, n_ifs; |
| 1171 asdl_seq *ifs; | |
| 1172 | |
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1173 n = CHILD(n, 4); |
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1174 n_ifs = count_comp_ifs(n); |
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1175 if (n_ifs == -1) |
| 35742 | 1176 return NULL; |
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1177 |
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1178 ifs = asdl_seq_new(n_ifs, c->c_arena); |
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1179 if (!ifs) |
| 35742 | 1180 return NULL; |
|
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1181 |
| 35742 | 1182 for (j = 0; j < n_ifs; j++) { |
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1183 REQ(n, comp_iter); |
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1184 n = CHILD(n, 0); |
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1185 REQ(n, comp_if); |
| 35742 | 1186 |
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1187 expression = ast_for_expr(c, CHILD(n, 1)); |
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1188 if (!expression) |
|
35798
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1189 return NULL; |
|
36718
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1190 asdl_seq_SET(ifs, j, expression); |
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1191 if (NCH(n) == 3) |
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1192 n = CHILD(n, 2); |
| 35742 | 1193 } |
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1194 /* on exit, must guarantee that n is a comp_for */ |
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1195 if (TYPE(n) == comp_iter) |
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1196 n = CHILD(n, 0); |
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1197 comp->ifs = ifs; |
| 35742 | 1198 } |
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1199 asdl_seq_SET(comps, i, comp); |
| 35742 | 1200 } |
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1201 return comps; |
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1202 } |
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1203 |
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1204 static expr_ty |
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1205 ast_for_itercomp(struct compiling *c, const node *n, int type) |
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1206 { |
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1207 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1208 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1209 expr_ty elt; |
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1210 asdl_seq *comps; |
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1211 |
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1212 assert(NCH(n) > 1); |
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1213 |
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1214 elt = ast_for_expr(c, CHILD(n, 0)); |
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1215 if (!elt) |
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1216 return NULL; |
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1217 |
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1218 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1219 if (!comps) |
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1220 return NULL; |
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1221 |
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1222 if (type == COMP_GENEXP) |
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1223 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1224 else if (type == COMP_LISTCOMP) |
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1225 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1226 else if (type == COMP_SETCOMP) |
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1227 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1228 else |
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1229 /* Should never happen */ |
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1230 return NULL; |
| 35742 | 1231 } |
| 1232 | |
| 1233 static expr_ty | |
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1234 ast_for_dictcomp(struct compiling *c, const node *n) |
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1235 { |
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1236 expr_ty key, value; |
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1237 asdl_seq *comps; |
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1238 |
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1239 assert(NCH(n) > 3); |
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1240 REQ(CHILD(n, 1), COLON); |
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1241 |
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1242 key = ast_for_expr(c, CHILD(n, 0)); |
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1243 if (!key) |
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1244 return NULL; |
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1245 |
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1246 value = ast_for_expr(c, CHILD(n, 2)); |
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1247 if (!value) |
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1248 return NULL; |
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1249 |
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1250 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1251 if (!comps) |
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1252 return NULL; |
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1253 |
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1254 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1255 } |
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1256 |
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1257 static expr_ty |
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1258 ast_for_genexp(struct compiling *c, const node *n) |
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1259 { |
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1260 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1261 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1262 } |
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1263 |
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1264 static expr_ty |
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1265 ast_for_listcomp(struct compiling *c, const node *n) |
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1266 { |
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1267 assert(TYPE(n) == (testlist_comp)); |
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1268 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1269 } |
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1270 |
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1271 static expr_ty |
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1272 ast_for_setcomp(struct compiling *c, const node *n) |
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1273 { |
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1274 assert(TYPE(n) == (dictorsetmaker)); |
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1275 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1276 } |
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1277 |
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1278 |
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1279 static expr_ty |
| 35742 | 1280 ast_for_atom(struct compiling *c, const node *n) |
| 1281 { | |
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1282 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1283 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
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1284 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1285 */ |
| 1286 node *ch = CHILD(n, 0); | |
| 40894 | 1287 int bytesmode = 0; |
| 35742 | 1288 |
| 1289 switch (TYPE(ch)) { | |
| 1290 case NAME: | |
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1291 /* All names start in Load context, but may later be |
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1292 changed. */ |
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1293 return Name(NEW_IDENTIFIER(ch), Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1294 case STRING: { |
| 40894 | 1295 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1296 if (!str) { |
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1297 if (PyErr_ExceptionMatches(PyExc_UnicodeError)) { |
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1298 PyObject *type, *value, *tback, *errstr; |
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1299 PyErr_Fetch(&type, &value, &tback); |
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1300 errstr = ((PyUnicodeErrorObject *)value)->reason; |
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1301 if (errstr) { |
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1302 char *s = ""; |
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1303 char buf[128]; |
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1304 s = PyUnicode_AsString(errstr); |
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1305 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
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1306 ast_error(n, buf); |
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1307 } else { |
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1308 ast_error(n, "(unicode error) unknown error"); |
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1309 } |
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1310 Py_DECREF(type); |
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1311 Py_DECREF(value); |
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1312 Py_XDECREF(tback); |
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1313 } |
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1314 return NULL; |
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1315 } |
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1316 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1317 if (bytesmode) |
| 1318 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1319 else | |
| 1320 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1321 } |
| 1322 case NUMBER: { | |
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1323 PyObject *pynum = parsenumber(STR(ch)); |
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1324 if (!pynum) |
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1325 return NULL; |
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1326 |
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1327 PyArena_AddPyObject(c->c_arena, pynum); |
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1328 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1329 } |
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1330 case ELLIPSIS: /* Ellipsis */ |
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1331 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1332 case LPAR: /* some parenthesized expressions */ |
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1333 ch = CHILD(n, 1); |
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1334 |
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1335 if (TYPE(ch) == RPAR) |
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1336 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1337 |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1338 if (TYPE(ch) == yield_expr) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1339 return ast_for_expr(c, ch); |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1340 |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1341 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1342 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
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|
1343 return ast_for_genexp(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
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|
1344 |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1345 return ast_for_testlist(c, ch); |
| 35742 | 1346 case LSQB: /* list (or list comprehension) */ |
|
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
|
1347 ch = CHILD(n, 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
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|
1348 |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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diff
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|
1349 if (TYPE(ch) == RSQB) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
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|
1350 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
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|
1351 |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1352 REQ(ch, testlist_comp); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
1353 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
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|
1354 asdl_seq *elts = seq_for_testlist(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1355 if (!elts) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1356 return NULL; |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1357 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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diff
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|
1358 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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diff
changeset
|
1359 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
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|
1360 else |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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diff
changeset
|
1361 return ast_for_listcomp(c, ch); |
| 35742 | 1362 case LBRACE: { |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1363 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
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|
1364 * test (gen_for | (',' test)* [',']) */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1365 int i, size; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
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40450
diff
changeset
|
1366 asdl_seq *keys, *values; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1367 |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1368 ch = CHILD(n, 1); |
|
41464
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Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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diff
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|
1369 if (TYPE(ch) == RBRACE) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
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|
1370 /* it's an empty dict */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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|
1371 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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diff
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|
1372 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1373 /* it's a simple set */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
parents:
41464
diff
changeset
|
1374 asdl_seq *elts; |
|
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d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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changeset
|
1375 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1376 elts = asdl_seq_new(size, c->c_arena); |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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diff
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|
1377 if (!elts) |
|
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parents:
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|
1378 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1379 for (i = 0; i < NCH(ch); i += 2) { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
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|
1380 expr_ty expression; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
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|
1381 expression = ast_for_expr(c, CHILD(ch, i)); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
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|
1382 if (!expression) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
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|
1383 return NULL; |
|
41464
060c79f6d919
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Nick Coghlan <ncoghlan@gmail.com>
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|
1384 asdl_seq_SET(elts, i / 2, expression); |
|
39693
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1385 } |
|
41464
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Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
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|
1386 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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diff
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|
1387 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1388 /* it's a set comprehension */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
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diff
changeset
|
1389 return ast_for_setcomp(c, ch); |
|
42193
090588a17490
Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
42084
diff
changeset
|
1390 } else if (NCH(ch) > 3 && TYPE(CHILD(ch, 3)) == comp_for) { |
|
090588a17490
Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
42084
diff
changeset
|
1391 return ast_for_dictcomp(c, ch); |
|
39693
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Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1392 } else { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1393 /* it's a dict */ |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1394 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1395 keys = asdl_seq_new(size, c->c_arena); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1396 if (!keys) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1397 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1398 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1399 values = asdl_seq_new(size, c->c_arena); |
|
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parents:
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diff
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|
1400 if (!values) |
|
d0b83c4630c0
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1401 return NULL; |
|
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SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
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|
1402 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1403 for (i = 0; i < NCH(ch); i += 4) { |
|
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diff
changeset
|
1404 expr_ty expression; |
|
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SF patch 1547796 by Georg Brandl -- set literals.
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diff
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|
1405 |
|
d0b83c4630c0
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parents:
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|
1406 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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changeset
|
1407 if (!expression) |
|
d0b83c4630c0
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parents:
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diff
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|
1408 return NULL; |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1409 |
|
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SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
changeset
|
1410 asdl_seq_SET(keys, i / 4, expression); |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1411 |
|
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changeset
|
1412 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
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parents:
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changeset
|
1413 if (!expression) |
|
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|
1414 return NULL; |
|
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|
1415 |
|
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|
1416 asdl_seq_SET(values, i / 4, expression); |
|
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|
1417 } |
|
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|
1418 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1419 } |
| 35742 | 1420 } |
| 1421 default: | |
|
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|
1422 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
cc992d75d5b3
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|
1423 return NULL; |
| 35742 | 1424 } |
| 1425 } | |
| 1426 | |
| 1427 static slice_ty | |
| 1428 ast_for_slice(struct compiling *c, const node *n) | |
| 1429 { | |
| 1430 node *ch; | |
| 1431 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1432 | |
| 1433 REQ(n, subscript); | |
| 1434 | |
| 1435 /* | |
|
39783
7a0ad110e91e
Patch #1550786: ellipsis literal.
Georg Brandl <georg@python.org>
parents:
39782
diff
changeset
|
1436 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1437 sliceop: ':' [test] |
| 1438 */ | |
| 1439 ch = CHILD(n, 0); | |
| 1440 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1441 /* 'step' variable hold no significance in terms of being used over | |
| 1442 other vars */ | |
| 1443 step = ast_for_expr(c, ch); | |
| 1444 if (!step) | |
| 1445 return NULL; | |
| 1446 | |
|
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Four months of trunk changes (including a few releases...)
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|
1447 return Index(step, c->c_arena); |
| 35742 | 1448 } |
| 1449 | |
| 1450 if (TYPE(ch) == test) { | |
|
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|
1451 lower = ast_for_expr(c, ch); |
| 35742 | 1452 if (!lower) |
| 1453 return NULL; | |
| 1454 } | |
| 1455 | |
| 1456 /* If there's an upper bound it's in the second or third position. */ | |
| 1457 if (TYPE(ch) == COLON) { | |
|
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|
1458 if (NCH(n) > 1) { |
|
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changeset
|
1459 node *n2 = CHILD(n, 1); |
| 35742 | 1460 |
|
40450
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|
1461 if (TYPE(n2) == test) { |
|
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|
1462 upper = ast_for_expr(c, n2); |
| 35742 | 1463 if (!upper) |
| 1464 return NULL; | |
| 1465 } | |
|
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|
1466 } |
| 35742 | 1467 } else if (NCH(n) > 2) { |
|
40450
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changeset
|
1468 node *n2 = CHILD(n, 2); |
| 35742 | 1469 |
|
40450
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|
1470 if (TYPE(n2) == test) { |
|
cc992d75d5b3
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|
1471 upper = ast_for_expr(c, n2); |
| 35742 | 1472 if (!upper) |
| 1473 return NULL; | |
| 1474 } | |
| 1475 } | |
| 1476 | |
| 1477 ch = CHILD(n, NCH(n) - 1); | |
| 1478 if (TYPE(ch) == sliceop) { | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1479 if (NCH(ch) == 1) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1480 /* No expression, so step is None */ |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1481 ch = CHILD(ch, 0); |
|
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1482 step = Name(new_identifier("None", c->c_arena), Load, |
|
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|
1483 LINENO(ch), ch->n_col_offset, c->c_arena); |
| 35742 | 1484 if (!step) |
| 1485 return NULL; | |
|
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|
1486 } else { |
|
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|
1487 ch = CHILD(ch, 1); |
|
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|
1488 if (TYPE(ch) == test) { |
|
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|
1489 step = ast_for_expr(c, ch); |
|
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|
1490 if (!step) |
|
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|
1491 return NULL; |
|
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|
1492 } |
| 35742 | 1493 } |
| 1494 } | |
| 1495 | |
|
36065
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parents:
36001
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|
1496 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1497 } |
| 1498 | |
| 1499 static expr_ty | |
| 1500 ast_for_binop(struct compiling *c, const node *n) | |
| 1501 { | |
|
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|
1502 /* Must account for a sequence of expressions. |
|
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|
1503 How should A op B op C by represented? |
|
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|
1504 BinOp(BinOp(A, op, B), op, C). |
|
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|
1505 */ |
| 35742 | 1506 |
|
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|
1507 int i, nops; |
|
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|
1508 expr_ty expr1, expr2, result; |
|
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|
1509 operator_ty newoperator; |
|
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|
1510 |
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|
1511 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
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|
1512 if (!expr1) |
|
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|
1513 return NULL; |
| 35742 | 1514 |
|
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|
1515 expr2 = ast_for_expr(c, CHILD(n, 2)); |
|
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|
1516 if (!expr2) |
|
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|
1517 return NULL; |
|
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|
1518 |
|
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|
1519 newoperator = get_operator(CHILD(n, 1)); |
|
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|
1520 if (!newoperator) |
|
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|
1521 return NULL; |
| 35742 | 1522 |
|
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|
1523 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
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|
1524 c->c_arena); |
|
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|
1525 if (!result) |
|
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|
1526 return NULL; |
| 35742 | 1527 |
|
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|
1528 nops = (NCH(n) - 1) / 2; |
|
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|
1529 for (i = 1; i < nops; i++) { |
|
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|
1530 expr_ty tmp_result, tmp; |
|
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|
1531 const node* next_oper = CHILD(n, i * 2 + 1); |
|
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|
1532 |
|
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|
1533 newoperator = get_operator(next_oper); |
|
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|
1534 if (!newoperator) |
| 35742 | 1535 return NULL; |
| 1536 | |
|
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|
1537 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
|
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|
1538 if (!tmp) |
| 35742 | 1539 return NULL; |
| 1540 | |
|
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|
1541 tmp_result = BinOp(result, newoperator, tmp, |
|
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|
1542 LINENO(next_oper), next_oper->n_col_offset, |
|
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|
1543 c->c_arena); |
|
43734
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|
1544 if (!tmp_result) |
|
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|
1545 return NULL; |
|
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|
1546 result = tmp_result; |
|
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|
1547 } |
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|
1548 return result; |
| 35742 | 1549 } |
| 1550 | |
|
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|
1551 static expr_ty |
|
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|
1552 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
|
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|
1553 { |
|
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Fix parsing of subscriptlist.
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|
1554 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
|
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Fix parsing of subscriptlist.
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|
1555 subscriptlist: subscript (',' subscript)* [','] |
|
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Fix parsing of subscriptlist.
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|
1556 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
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Fix parsing of subscriptlist.
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diff
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|
1557 */ |
|
35799
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
changeset
|
1558 REQ(n, trailer); |
|
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Refactor code for translating "power" nodes.
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diff
changeset
|
1559 if (TYPE(CHILD(n, 0)) == LPAR) { |
|
842caa245917
Refactor code for translating "power" nodes.
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|
1560 if (NCH(n) == 2) |
|
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|
1561 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
1562 n->n_col_offset, c->c_arena); |
|
35799
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Refactor code for translating "power" nodes.
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parents:
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diff
changeset
|
1563 else |
|
36679
e1391910b026
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parents:
36676
diff
changeset
|
1564 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
35799
842caa245917
Refactor code for translating "power" nodes.
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diff
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|
1565 } |
|
36679
e1391910b026
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parents:
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diff
changeset
|
1566 else if (TYPE(CHILD(n, 0)) == DOT ) { |
|
e1391910b026
Simplify ast_for_trailer() in anticipation of more changes.
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parents:
36676
diff
changeset
|
1567 return Attribute(left_expr, NEW_IDENTIFIER(CHILD(n, 1)), Load, |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1568 LINENO(n), n->n_col_offset, c->c_arena); |
|
36679
e1391910b026
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diff
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|
1569 } |
|
e1391910b026
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diff
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|
1570 else { |
|
e1391910b026
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diff
changeset
|
1571 REQ(CHILD(n, 0), LSQB); |
|
35799
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diff
changeset
|
1572 REQ(CHILD(n, 2), RSQB); |
|
842caa245917
Refactor code for translating "power" nodes.
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diff
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|
1573 n = CHILD(n, 1); |
|
36686
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|
1574 if (NCH(n) == 1) { |
|
35799
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Refactor code for translating "power" nodes.
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changeset
|
1575 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
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Refactor code for translating "power" nodes.
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|
1576 if (!slc) |
|
842caa245917
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|
1577 return NULL; |
|
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|
1578 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
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|
1579 c->c_arena); |
|
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|
1580 } |
|
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diff
changeset
|
1581 else { |
|
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changeset
|
1582 /* The grammar is ambiguous here. The ambiguity is resolved |
|
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diff
changeset
|
1583 by treating the sequence as a tuple literal if there are |
|
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changeset
|
1584 no slice features. |
|
8611f39cd82b
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diff
changeset
|
1585 */ |
|
35799
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diff
changeset
|
1586 int j; |
|
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Refactor code for translating "power" nodes.
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diff
changeset
|
1587 slice_ty slc; |
|
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Fix parsing of subscriptlist.
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changeset
|
1588 expr_ty e; |
|
40941
2ca14d6a369b
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Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
1589 int simple = 1; |
|
36686
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36682
diff
changeset
|
1590 asdl_seq *slices, *elts; |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1591 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
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changeset
|
1592 if (!slices) |
|
842caa245917
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diff
changeset
|
1593 return NULL; |
|
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parents:
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diff
changeset
|
1594 for (j = 0; j < NCH(n); j += 2) { |
|
842caa245917
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
changeset
|
1595 slc = ast_for_slice(c, CHILD(n, j)); |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
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changeset
|
1596 if (!slc) |
|
35799
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
changeset
|
1597 return NULL; |
|
36686
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Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1598 if (slc->kind != Index_kind) |
|
40941
2ca14d6a369b
Whoops, fix build breakage. There were still a few uses of the bool type.
Neal Norwitz <nnorwitz@gmail.com>
parents:
40894
diff
changeset
|
1599 simple = 0; |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1600 asdl_seq_SET(slices, j / 2, slc); |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1601 } |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1602 if (!simple) { |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1603 return Subscript(left_expr, ExtSlice(slices, 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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|
1604 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1605 } |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1606 /* extract Index values and put them in a Tuple */ |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1607 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
36877
e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
parents:
36786
diff
changeset
|
1608 if (!elts) |
|
e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
parents:
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diff
changeset
|
1609 return NULL; |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1610 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1611 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
1612 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1613 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1614 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1615 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1616 if (!e) |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1617 return NULL; |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1618 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
changeset
|
1619 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1620 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1621 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1622 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1623 |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1624 static expr_ty |
|
39442
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|
1625 ast_for_factor(struct compiling *c, const node *n) |
|
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|
1626 { |
|
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|
1627 node *pfactor, *ppower, *patom, *pnum; |
|
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|
1628 expr_ty expression; |
|
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|
1629 |
|
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|
1630 /* If the unary - operator is applied to a constant, don't generate |
|
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changeset
|
1631 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
|
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|
1632 constant. The peephole optimizer already does something like |
|
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|
1633 this but it doesn't handle the case where the constant is |
|
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changeset
|
1634 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
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|
1635 PyLongObject. |
|
654c380cf8b9
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|
1636 */ |
|
654c380cf8b9
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changeset
|
1637 if (TYPE(CHILD(n, 0)) == MINUS |
|
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changeset
|
1638 && NCH(n) == 2 |
|
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|
1639 && TYPE((pfactor = CHILD(n, 1))) == factor |
|
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|
1640 && NCH(pfactor) == 1 |
|
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|
1641 && TYPE((ppower = CHILD(pfactor, 0))) == power |
|
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changeset
|
1642 && NCH(ppower) == 1 |
|
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|
1643 && TYPE((patom = CHILD(ppower, 0))) == atom |
|
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|
1644 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
|
654c380cf8b9
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|
1645 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
|
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Merged revisions 46753-51188 via svnmerge from
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|
1646 if (s == NULL) |
|
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|
1647 return NULL; |
|
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|
1648 s[0] = '-'; |
|
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changeset
|
1649 strcpy(s + 1, STR(pnum)); |
|
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changeset
|
1650 PyObject_FREE(STR(pnum)); |
|
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changeset
|
1651 STR(pnum) = s; |
|
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|
1652 return ast_for_atom(c, patom); |
|
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|
1653 } |
|
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|
1654 |
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|
1655 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
1656 if (!expression) |
|
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|
1657 return NULL; |
|
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|
1658 |
|
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changeset
|
1659 switch (TYPE(CHILD(n, 0))) { |
|
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changeset
|
1660 case PLUS: |
|
654c380cf8b9
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changeset
|
1661 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
|
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changeset
|
1662 c->c_arena); |
|
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|
1663 case MINUS: |
|
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|
1664 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
|
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|
1665 c->c_arena); |
|
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|
1666 case TILDE: |
|
654c380cf8b9
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|
1667 return UnaryOp(Invert, expression, LINENO(n), |
|
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|
1668 n->n_col_offset, c->c_arena); |
|
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|
1669 } |
|
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|
1670 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
|
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|
1671 TYPE(CHILD(n, 0))); |
|
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|
1672 return NULL; |
|
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|
1673 } |
|
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|
1674 |
|
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changeset
|
1675 static expr_ty |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1676 ast_for_power(struct compiling *c, const node *n) |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1677 { |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1678 /* power: atom trailer* ('**' factor)* |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1679 */ |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1680 int i; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1681 expr_ty e, tmp; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1682 REQ(n, power); |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1683 e = ast_for_atom(c, CHILD(n, 0)); |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1684 if (!e) |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1685 return NULL; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1686 if (NCH(n) == 1) |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1687 return e; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1688 for (i = 1; i < NCH(n); i++) { |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1689 node *ch = CHILD(n, i); |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1690 if (TYPE(ch) != trailer) |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1691 break; |
|
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Refactor code for translating "power" nodes.
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parents:
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changeset
|
1692 tmp = ast_for_trailer(c, ch, e); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1693 if (!tmp) |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1694 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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changeset
|
1695 tmp->lineno = e->lineno; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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|
1696 tmp->col_offset = e->col_offset; |
|
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Refactor code for translating "power" nodes.
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parents:
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diff
changeset
|
1697 e = tmp; |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1698 } |
|
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Refactor code for translating "power" nodes.
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parents:
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diff
changeset
|
1699 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1700 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1701 if (!f) |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1702 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1703 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1704 if (!tmp) |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1705 return NULL; |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1706 e = tmp; |
|
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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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|
1707 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
changeset
|
1708 return e; |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
changeset
|
1709 } |
|
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Refactor code for translating "power" nodes.
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diff
changeset
|
1710 |
|
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1711 static expr_ty |
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1712 ast_for_starred(struct compiling *c, const node *n) |
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1713 { |
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1714 expr_ty tmp; |
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1715 REQ(n, star_expr); |
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1716 |
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1717 tmp = ast_for_expr(c, CHILD(n, 1)); |
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1718 if (!tmp) |
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1719 return NULL; |
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1720 |
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1721 /* The Load context is changed later. */ |
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1722 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1723 } |
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1724 |
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|
1725 |
| 35742 | 1726 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1727 */ | |
| 1728 | |
| 1729 static expr_ty | |
| 1730 ast_for_expr(struct compiling *c, const node *n) | |
| 1731 { | |
| 1732 /* handle the full range of simple expressions | |
|
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1733 test: or_test ['if' or_test 'else' test] | lambdef |
|
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1734 test_nocond: or_test | lambdef_nocond |
|
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1735 or_test: and_test ('or' and_test)* |
| 35742 | 1736 and_test: not_test ('and' not_test)* |
| 1737 not_test: 'not' not_test | comparison | |
| 1738 comparison: expr (comp_op expr)* | |
| 1739 expr: xor_expr ('|' xor_expr)* | |
| 1740 xor_expr: and_expr ('^' and_expr)* | |
| 1741 and_expr: shift_expr ('&' shift_expr)* | |
| 1742 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1743 arith_expr: term (('+'|'-') term)* | |
| 1744 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1745 factor: ('+'|'-'|'~') factor | power | |
| 1746 power: atom trailer* ('**' factor)* | |
| 1747 */ | |
| 1748 | |
| 1749 asdl_seq *seq; | |
| 1750 int i; | |
| 1751 | |
| 1752 loop: | |
| 1753 switch (TYPE(n)) { | |
| 1754 case test: | |
|
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1755 case test_nocond: |
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1756 if (TYPE(CHILD(n, 0)) == lambdef || |
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1757 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1758 return ast_for_lambdef(c, CHILD(n, 0)); |
|
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1759 else if (NCH(n) > 1) |
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1760 return ast_for_ifexpr(c, n); |
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1761 /* Fallthrough */ |
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1762 case or_test: |
| 35742 | 1763 case and_test: |
| 1764 if (NCH(n) == 1) { | |
| 1765 n = CHILD(n, 0); | |
| 1766 goto loop; | |
| 1767 } | |
|
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1768 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1769 if (!seq) |
| 1770 return NULL; | |
| 1771 for (i = 0; i < NCH(n); i += 2) { | |
| 1772 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1773 if (!e) | |
| 1774 return NULL; | |
| 1775 asdl_seq_SET(seq, i / 2, e); | |
| 1776 } | |
| 1777 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
|
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1778 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
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1779 c->c_arena); |
|
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1780 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
|
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1781 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1782 case not_test: |
| 1783 if (NCH(n) == 1) { | |
| 1784 n = CHILD(n, 0); | |
| 1785 goto loop; | |
| 1786 } | |
| 1787 else { | |
| 1788 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1789 if (!expression) | |
| 1790 return NULL; | |
| 1791 | |
|
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1792 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
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1793 c->c_arena); |
| 35742 | 1794 } |
| 1795 case comparison: | |
| 1796 if (NCH(n) == 1) { | |
| 1797 n = CHILD(n, 0); | |
| 1798 goto loop; | |
| 1799 } | |
| 1800 else { | |
| 1801 expr_ty expression; | |
|
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1802 asdl_int_seq *ops; |
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1803 asdl_seq *cmps; |
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1804 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1805 if (!ops) |
| 1806 return NULL; | |
|
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1807 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1808 if (!cmps) { |
| 1809 return NULL; | |
| 1810 } | |
| 1811 for (i = 1; i < NCH(n); i += 2) { | |
|
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1812 cmpop_ty newoperator; |
| 35742 | 1813 |
|
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1814 newoperator = ast_for_comp_op(CHILD(n, i)); |
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1815 if (!newoperator) { |
| 35742 | 1816 return NULL; |
|
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1817 } |
| 35742 | 1818 |
| 1819 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
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1820 if (!expression) { |
| 35742 | 1821 return NULL; |
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1822 } |
| 35742 | 1823 |
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1824 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1825 asdl_seq_SET(cmps, i / 2, expression); |
| 1826 } | |
| 1827 expression = ast_for_expr(c, CHILD(n, 0)); | |
|
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1828 if (!expression) { |
| 35742 | 1829 return NULL; |
|
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1830 } |
| 35742 | 1831 |
|
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1832 return Compare(expression, ops, cmps, LINENO(n), |
|
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1833 n->n_col_offset, c->c_arena); |
| 35742 | 1834 } |
| 1835 break; | |
| 1836 | |
|
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1837 case star_expr: |
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1838 if (TYPE(CHILD(n, 0)) == STAR) { |
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1839 return ast_for_starred(c, n); |
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1840 } |
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1841 /* Fallthrough */ |
| 35742 | 1842 /* The next five cases all handle BinOps. The main body of code |
| 1843 is the same in each case, but the switch turned inside out to | |
| 1844 reuse the code for each type of operator. | |
| 1845 */ | |
| 1846 case expr: | |
| 1847 case xor_expr: | |
| 1848 case and_expr: | |
| 1849 case shift_expr: | |
| 1850 case arith_expr: | |
| 1851 case term: | |
| 1852 if (NCH(n) == 1) { | |
| 1853 n = CHILD(n, 0); | |
| 1854 goto loop; | |
| 1855 } | |
| 1856 return ast_for_binop(c, n); | |
| 1857 case yield_expr: { | |
|
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1858 expr_ty exp = NULL; |
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1859 if (NCH(n) == 2) { |
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1860 exp = ast_for_testlist(c, CHILD(n, 1)); |
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1861 if (!exp) |
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1862 return NULL; |
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1863 } |
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1864 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
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1865 } |
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1866 case factor: |
| 35742 | 1867 if (NCH(n) == 1) { |
| 1868 n = CHILD(n, 0); | |
| 1869 goto loop; | |
| 1870 } | |
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1871 return ast_for_factor(c, n); |
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1872 case power: |
|
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|
1873 return ast_for_power(c, n); |
| 35742 | 1874 default: |
|
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1875 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1876 return NULL; |
| 1877 } | |
|
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1878 /* should never get here unless if error is set */ |
| 35742 | 1879 return NULL; |
| 1880 } | |
| 1881 | |
| 1882 static expr_ty | |
| 1883 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1884 { | |
| 1885 /* | |
| 1886 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1887 | '**' test) | |
|
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1888 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1889 */ |
| 1890 | |
| 1891 int i, nargs, nkeywords, ngens; | |
|
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1892 asdl_seq *args; |
|
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1893 asdl_seq *keywords; |
| 35742 | 1894 expr_ty vararg = NULL, kwarg = NULL; |
| 1895 | |
| 1896 REQ(n, arglist); | |
| 1897 | |
| 1898 nargs = 0; | |
| 1899 nkeywords = 0; | |
| 1900 ngens = 0; | |
| 1901 for (i = 0; i < NCH(n); i++) { | |
|
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1902 node *ch = CHILD(n, i); |
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1903 if (TYPE(ch) == argument) { |
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1904 if (NCH(ch) == 1) |
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1905 nargs++; |
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1906 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1907 ngens++; |
| 35742 | 1908 else |
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1909 nkeywords++; |
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1910 } |
| 35742 | 1911 } |
| 1912 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
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|
1913 ast_error(n, "Generator expression must be parenthesized " |
|
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1914 "if not sole argument"); |
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1915 return NULL; |
| 35742 | 1916 } |
| 1917 | |
| 1918 if (nargs + nkeywords + ngens > 255) { | |
| 1919 ast_error(n, "more than 255 arguments"); | |
| 1920 return NULL; | |
| 1921 } | |
| 1922 | |
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1923 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1924 if (!args) |
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1925 return NULL; |
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1926 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1927 if (!keywords) |
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1928 return NULL; |
| 35742 | 1929 nargs = 0; |
| 1930 nkeywords = 0; | |
| 1931 for (i = 0; i < NCH(n); i++) { | |
|
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1932 node *ch = CHILD(n, i); |
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1933 if (TYPE(ch) == argument) { |
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1934 expr_ty e; |
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1935 if (NCH(ch) == 1) { |
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1936 if (nkeywords) { |
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1937 ast_error(CHILD(ch, 0), |
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1938 "non-keyword arg after keyword arg"); |
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1939 return NULL; |
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1940 } |
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1941 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1942 if (!e) |
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1943 return NULL; |
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1944 asdl_seq_SET(args, nargs++, e); |
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1945 } |
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1946 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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1947 e = ast_for_genexp(c, ch); |
| 35742 | 1948 if (!e) |
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1949 return NULL; |
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1950 asdl_seq_SET(args, nargs++, e); |
| 35742 | 1951 } |
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1952 else { |
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1953 keyword_ty kw; |
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1954 identifier key; |
| 35742 | 1955 |
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1956 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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1957 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1958 if (!e) |
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1959 return NULL; |
| 35742 | 1960 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1961 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 1962 * SF bug 132313 points out that complaining about a keyword | |
| 1963 * then is very confusing. | |
| 1964 */ | |
| 1965 if (e->kind == Lambda_kind) { | |
| 1966 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
|
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1967 return NULL; |
| 35742 | 1968 } else if (e->kind != Name_kind) { |
| 1969 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
|
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1970 return NULL; |
|
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1971 } else if (forbidden_name(e, ch)) { |
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1972 return NULL; |
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1973 } |
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1974 key = e->v.Name.id; |
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1975 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 1976 if (!e) |
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1977 return NULL; |
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1978 kw = keyword(key, e, c->c_arena); |
| 35742 | 1979 if (!kw) |
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1980 return NULL; |
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1981 asdl_seq_SET(keywords, nkeywords++, kw); |
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1982 } |
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1983 } |
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1984 else if (TYPE(ch) == STAR) { |
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1985 vararg = ast_for_expr(c, CHILD(n, i+1)); |
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1986 i++; |
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1987 } |
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1988 else if (TYPE(ch) == DOUBLESTAR) { |
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1989 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
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1990 i++; |
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1991 } |
| 35742 | 1992 } |
| 1993 | |
|
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1994 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 1995 } |
| 1996 | |
| 1997 static expr_ty | |
|
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1998 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 1999 { |
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2000 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
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2001 /* testlist: test (',' test)* [','] */ |
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2002 /* testlist1: test (',' test)* */ |
| 35742 | 2003 assert(NCH(n) > 0); |
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2004 if (TYPE(n) == testlist_comp) { |
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2005 if (NCH(n) > 1) |
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2006 assert(TYPE(CHILD(n, 1)) != comp_for); |
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2007 } |
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2008 else { |
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2009 assert(TYPE(n) == testlist || |
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2010 TYPE(n) == testlist1); |
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2011 } |
| 35742 | 2012 if (NCH(n) == 1) |
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2013 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 2014 else { |
| 2015 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 2016 if (!tmp) | |
| 2017 return NULL; | |
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2018 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2019 } |
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2020 } |
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2021 |
| 35742 | 2022 static stmt_ty |
| 2023 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2024 { | |
| 2025 REQ(n, expr_stmt); | |
| 2026 /* expr_stmt: testlist (augassign (yield_expr|testlist) | |
| 2027 | ('=' (yield_expr|testlist))*) | |
| 2028 testlist: test (',' test)* [','] | |
| 2029 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | |
|
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2030 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2031 test: ... here starts the operator precendence dance |
| 2032 */ | |
| 2033 | |
| 2034 if (NCH(n) == 1) { | |
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2035 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2036 if (!e) |
| 2037 return NULL; | |
| 2038 | |
|
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2039 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2040 } |
| 2041 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2042 expr_ty expr1, expr2; | |
|
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2043 operator_ty newoperator; |
|
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2044 node *ch = CHILD(n, 0); |
| 35742 | 2045 |
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2046 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2047 if (!expr1) |
| 2048 return NULL; | |
|
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2049 /* TODO(nas): Remove duplicated error checks (set_context does it) */ |
|
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2050 switch (expr1->kind) { |
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2051 case GeneratorExp_kind: |
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2052 ast_error(ch, "augmented assignment to generator " |
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2053 "expression not possible"); |
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2054 return NULL; |
|
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2055 case Yield_kind: |
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2056 ast_error(ch, "augmented assignment to yield " |
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2057 "expression not possible"); |
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2058 return NULL; |
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2059 case Name_kind: { |
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2060 if (forbidden_name(expr1, ch)) |
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2061 return NULL; |
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2062 break; |
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2063 } |
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2064 case Attribute_kind: |
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2065 case Subscript_kind: |
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2066 break; |
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2067 default: |
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2068 ast_error(ch, "illegal expression for augmented " |
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2069 "assignment"); |
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2070 return NULL; |
| 35742 | 2071 } |
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2072 set_context(expr1, Store, ch); |
| 35742 | 2073 |
|
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2074 ch = CHILD(n, 2); |
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changeset
|
2075 if (TYPE(ch) == testlist) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2076 expr2 = ast_for_testlist(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2077 else |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2078 expr2 = ast_for_expr(c, ch); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2079 if (!expr2) |
| 35742 | 2080 return NULL; |
| 2081 | |
|
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
|
2082 newoperator = ast_for_augassign(CHILD(n, 1)); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2083 if (!newoperator) |
| 35742 | 2084 return NULL; |
| 2085 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2086 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2087 } |
| 2088 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2089 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2090 asdl_seq *targets; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2091 node *value; |
| 35742 | 2092 expr_ty expression; |
| 2093 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2094 /* a normal assignment */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2095 REQ(CHILD(n, 1), EQUAL); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2096 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2097 if (!targets) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2098 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2099 for (i = 0; i < NCH(n) - 2; i += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2100 expr_ty e; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2101 node *ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2102 if (TYPE(ch) == yield_expr) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2103 ast_error(ch, "assignment to yield expression not possible"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2104 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2105 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2106 e = ast_for_testlist(c, ch); |
| 35742 | 2107 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2108 /* set context to assign */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2109 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2110 return NULL; |
| 35742 | 2111 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2112 if (!set_context(e, Store, CHILD(n, i))) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2113 return NULL; |
| 35742 | 2114 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2115 asdl_seq_SET(targets, i / 2, e); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2116 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2117 value = CHILD(n, NCH(n) - 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2118 if (TYPE(value) == testlist) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2119 expression = ast_for_testlist(c, value); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2120 else |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2121 expression = ast_for_expr(c, value); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2122 if (!expression) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2123 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2124 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2125 } |
| 2126 } | |
| 2127 | |
| 2128 static asdl_seq * | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2129 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2130 { |
| 2131 asdl_seq *seq; | |
| 2132 int i; | |
| 2133 expr_ty e; | |
| 2134 | |
| 2135 REQ(n, exprlist); | |
| 2136 | |
|
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
|
2137 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2138 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2139 return NULL; |
| 35742 | 2140 for (i = 0; i < NCH(n); i += 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2141 e = ast_for_expr(c, CHILD(n, i)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2142 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2143 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2144 asdl_seq_SET(seq, i / 2, e); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2145 if (context && !set_context(e, context, CHILD(n, i))) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2146 return NULL; |
| 35742 | 2147 } |
| 2148 return seq; | |
| 2149 } | |
| 2150 | |
| 2151 static stmt_ty | |
| 2152 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2153 { | |
| 2154 asdl_seq *expr_list; | |
| 2155 | |
| 2156 /* del_stmt: 'del' exprlist */ | |
| 2157 REQ(n, del_stmt); | |
| 2158 | |
| 2159 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2160 if (!expr_list) | |
| 2161 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2162 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2163 } |
| 2164 | |
| 2165 static stmt_ty | |
| 2166 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2167 { | |
| 2168 /* | |
| 2169 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2170 | yield_stmt | |
| 2171 break_stmt: 'break' | |
| 2172 continue_stmt: 'continue' | |
| 2173 return_stmt: 'return' [testlist] | |
| 2174 yield_stmt: yield_expr | |
| 2175 yield_expr: 'yield' testlist | |
| 2176 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2177 */ | |
| 2178 node *ch; | |
| 2179 | |
| 2180 REQ(n, flow_stmt); | |
| 2181 ch = CHILD(n, 0); | |
| 2182 switch (TYPE(ch)) { | |
| 2183 case break_stmt: | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2184 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2185 case continue_stmt: |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2186 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2187 case yield_stmt: { /* will reduce to yield_expr */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2188 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2189 if (!exp) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2190 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2191 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2192 } |
| 2193 case return_stmt: | |
| 2194 if (NCH(ch) == 1) | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2195 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2196 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2197 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2198 if (!expression) |
| 2199 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2200 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2201 } |
| 2202 case raise_stmt: | |
| 2203 if (NCH(ch) == 1) | |
|
43102
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2204 return Raise(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2205 else if (NCH(ch) >= 2) { |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2206 expr_ty cause = NULL; |
| 35742 | 2207 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); |
| 2208 if (!expression) | |
| 2209 return NULL; | |
|
43102
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2210 if (NCH(ch) == 4) { |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2211 cause = ast_for_expr(c, CHILD(ch, 3)); |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2212 if (!cause) |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2213 return NULL; |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2214 } |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2215 return Raise(expression, cause, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2216 } |
| 2217 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2218 PyErr_Format(PyExc_SystemError, |
| 35742 | 2219 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2220 return NULL; | |
| 2221 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2222 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2223 PyErr_SetString(PyExc_SystemError, "unhandled flow statement"); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2224 return NULL; |
| 35742 | 2225 } |
| 2226 | |
| 2227 static alias_ty | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2228 alias_for_import_name(struct compiling *c, const node *n) |
| 35742 | 2229 { |
| 2230 /* | |
|
36742
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
36718
diff
changeset
|
2231 import_as_name: NAME ['as' NAME] |
|
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
36718
diff
changeset
|
2232 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2233 dotted_name: NAME ('.' NAME)* |
| 2234 */ | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2235 PyObject *str; |
|
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2236 |
| 35742 | 2237 loop: |
| 2238 switch (TYPE(n)) { | |
| 2239 case import_as_name: | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2240 str = NULL; |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2241 if (NCH(n) == 3) { |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2242 str = NEW_IDENTIFIER(CHILD(n, 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2243 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2244 return alias(NEW_IDENTIFIER(CHILD(n, 0)), str, c->c_arena); |
| 35742 | 2245 case dotted_as_name: |
| 2246 if (NCH(n) == 1) { | |
| 2247 n = CHILD(n, 0); | |
| 2248 goto loop; | |
| 2249 } | |
| 2250 else { | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2251 alias_ty a = alias_for_import_name(c, CHILD(n, 0)); |
|
39610
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2252 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2253 return NULL; |
| 35742 | 2254 assert(!a->asname); |
| 2255 a->asname = NEW_IDENTIFIER(CHILD(n, 2)); | |
| 2256 return a; | |
| 2257 } | |
| 2258 break; | |
| 2259 case dotted_name: | |
| 2260 if (NCH(n) == 1) | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2261 return alias(NEW_IDENTIFIER(CHILD(n, 0)), NULL, c->c_arena); |
| 35742 | 2262 else { |
| 2263 /* Create a string of the form "a.b.c" */ | |
|
36242
0f5189607264
Repair bizarre indentation created by VC 7.1.
Tim Peters <tim.peters@gmail.com>
parents:
36241
diff
changeset
|
2264 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2265 size_t len; |
| 35742 | 2266 char *s; |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2267 PyObject *uni; |
| 35742 | 2268 |
| 2269 len = 0; | |
| 2270 for (i = 0; i < NCH(n); i += 2) | |
| 2271 /* length of string plus one for the dot */ | |
| 2272 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2273 len--; /* the last name doesn't have a dot */ | |
| 2274 str = PyString_FromStringAndSize(NULL, len); | |
| 2275 if (!str) | |
| 2276 return NULL; | |
| 2277 s = PyString_AS_STRING(str); | |
| 2278 if (!s) | |
| 2279 return NULL; | |
| 2280 for (i = 0; i < NCH(n); i += 2) { | |
| 2281 char *sch = STR(CHILD(n, i)); | |
| 2282 strcpy(s, STR(CHILD(n, i))); | |
| 2283 s += strlen(sch); | |
| 2284 *s++ = '.'; | |
| 2285 } | |
| 2286 --s; | |
| 2287 *s = '\0'; | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2288 uni = PyUnicode_DecodeUTF8(PyString_AS_STRING(str), |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2289 PyString_GET_SIZE(str), |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2290 NULL); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2291 Py_DECREF(str); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2292 if (!uni) |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2293 return NULL; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2294 str = uni; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2295 PyUnicode_InternInPlace(&str); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2296 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2297 return alias(str, NULL, c->c_arena); |
| 35742 | 2298 } |
| 2299 break; | |
| 2300 case STAR: | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2301 str = PyUnicode_InternFromString("*"); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2302 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2303 return alias(str, NULL, c->c_arena); |
| 35742 | 2304 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2305 PyErr_Format(PyExc_SystemError, |
| 35742 | 2306 "unexpected import name: %d", TYPE(n)); |
| 2307 return NULL; | |
| 2308 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2309 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2310 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2311 return NULL; |
| 2312 } | |
| 2313 | |
| 2314 static stmt_ty | |
| 2315 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2316 { | |
| 2317 /* | |
| 2318 import_stmt: import_name | import_from | |
| 2319 import_name: 'import' dotted_as_names | |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2320 import_from: 'from' (('.' | '...')* dotted_name | ('.' | '...')+) |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2321 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2322 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2323 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2324 int col_offset; |
| 35742 | 2325 int i; |
| 2326 asdl_seq *aliases; | |
| 2327 | |
| 2328 REQ(n, import_stmt); | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2329 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2330 col_offset = n->n_col_offset; |
| 35742 | 2331 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2332 if (TYPE(n) == import_name) { |
| 35742 | 2333 n = CHILD(n, 1); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2334 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2335 aliases = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2336 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2337 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2338 for (i = 0; i < NCH(n); i += 2) { |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2339 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i)); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2340 if (!import_alias) |
| 35742 | 2341 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2342 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2343 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2344 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2345 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2346 else if (TYPE(n) == import_from) { |
| 35742 | 2347 int n_children; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2348 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2349 alias_ty mod = NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2350 identifier modname; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2351 |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2352 /* Count the number of dots (for relative imports) and check for the |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2353 optional module name */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2354 for (idx = 1; idx < NCH(n); idx++) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2355 if (TYPE(CHILD(n, idx)) == dotted_name) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2356 mod = alias_for_import_name(c, CHILD(n, idx)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2357 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2358 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2359 } else if (TYPE(CHILD(n, idx)) == ELLIPSIS) { |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2360 /* three consecutive dots are tokenized as one ELLIPSIS */ |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2361 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2362 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2363 } else if (TYPE(CHILD(n, idx)) != DOT) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2364 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2365 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2366 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2367 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2368 idx++; /* skip over the 'import' keyword */ |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2369 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2370 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2371 /* from ... import * */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2372 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2373 n_children = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2374 if (ndots) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2375 ast_error(n, "'import *' not allowed with 'from .'"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2376 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2377 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2378 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2379 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2380 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2381 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2382 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2383 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2384 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2385 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2386 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2387 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2388 if (n_children % 2 == 0) { |
| 35742 | 2389 ast_error(n, "trailing comma not allowed without" |
| 2390 " surrounding parentheses"); | |
| 2391 return NULL; | |
| 2392 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2393 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2394 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2395 ast_error(n, "Unexpected node-type in from-import"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2396 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2397 } |
| 35742 | 2398 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2399 aliases = asdl_seq_new((n_children + 1) / 2, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2400 if (!aliases) |
| 35742 | 2401 return NULL; |
| 2402 | |
| 2403 /* handle "from ... import *" special b/c there's no children */ | |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2404 if (TYPE(n) == STAR) { |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2405 alias_ty import_alias = alias_for_import_name(c, n); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2406 if (!import_alias) |
| 35742 | 2407 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2408 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2409 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2410 else { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2411 for (i = 0; i < NCH(n); i += 2) { |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2412 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i)); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2413 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2414 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2415 asdl_seq_SET(aliases, i / 2, import_alias); |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2416 } |
| 35742 | 2417 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2418 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2419 modname = mod->name; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2420 else |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2421 modname = new_identifier("", c->c_arena); |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2422 return ImportFrom(modname, aliases, ndots, lineno, col_offset, |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2423 c->c_arena); |
| 35742 | 2424 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2425 PyErr_Format(PyExc_SystemError, |
| 35742 | 2426 "unknown import statement: starts with command '%s'", |
| 2427 STR(CHILD(n, 0))); | |
| 2428 return NULL; | |
| 2429 } | |
| 2430 | |
| 2431 static stmt_ty | |
| 2432 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2433 { | |
| 2434 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2435 identifier name; | |
| 2436 asdl_seq *s; | |
| 2437 int i; | |
| 2438 | |
| 2439 REQ(n, global_stmt); | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2440 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2441 if (!s) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2442 return NULL; |
| 35742 | 2443 for (i = 1; i < NCH(n); i += 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2444 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2445 if (!name) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2446 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2447 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2448 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2449 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2450 } |
| 2451 | |
| 2452 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2453 ast_for_nonlocal_stmt(struct compiling *c, const node *n) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2454 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2455 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2456 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2457 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2458 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2459 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2460 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2461 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2462 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2463 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2464 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2465 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2466 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2467 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2468 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2469 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2470 return Nonlocal(s, LINENO(n), n->n_col_offset, c->c_arena); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2471 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2472 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2473 static stmt_ty |
| 35742 | 2474 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2475 { | |
| 2476 /* assert_stmt: 'assert' test [',' test] */ | |
| 2477 REQ(n, assert_stmt); | |
| 2478 if (NCH(n) == 2) { | |
| 2479 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2480 if (!expression) | |
| 2481 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2482 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2483 } |
| 2484 else if (NCH(n) == 4) { | |
| 2485 expr_ty expr1, expr2; | |
| 2486 | |
| 2487 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2488 if (!expr1) | |
| 2489 return NULL; | |
| 2490 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2491 if (!expr2) | |
| 2492 return NULL; | |
| 2493 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2494 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2495 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2496 PyErr_Format(PyExc_SystemError, |
| 35742 | 2497 "improper number of parts to 'assert' statement: %d", |
| 2498 NCH(n)); | |
| 2499 return NULL; | |
| 2500 } | |
| 2501 | |
| 2502 static asdl_seq * | |
| 2503 ast_for_suite(struct compiling *c, const node *n) | |
| 2504 { | |
| 2505 /* suite: simple_stmt | NEWLINE INDENT stmt+ DEDENT */ | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2506 asdl_seq *seq; |
| 35742 | 2507 stmt_ty s; |
| 2508 int i, total, num, end, pos = 0; | |
| 2509 node *ch; | |
| 2510 | |
| 2511 REQ(n, suite); | |
| 2512 | |
| 2513 total = num_stmts(n); | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2514 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2515 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2516 return NULL; |
| 35742 | 2517 if (TYPE(CHILD(n, 0)) == simple_stmt) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2518 n = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2519 /* simple_stmt always ends with a NEWLINE, |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2520 and may have a trailing SEMI |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2521 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2522 end = NCH(n) - 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2523 if (TYPE(CHILD(n, end - 1)) == SEMI) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2524 end--; |
| 35742 | 2525 /* loop by 2 to skip semi-colons */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2526 for (i = 0; i < end; i += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2527 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2528 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2529 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2530 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2531 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2532 } |
| 35742 | 2533 } |
| 2534 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2535 for (i = 2; i < (NCH(n) - 1); i++) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2536 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2537 REQ(ch, stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2538 num = num_stmts(ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2539 if (num == 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2540 /* small_stmt or compound_stmt with only one child */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2541 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2542 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2543 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2544 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2545 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2546 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2547 int j; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2548 ch = CHILD(ch, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2549 REQ(ch, simple_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2550 for (j = 0; j < NCH(ch); j += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2551 /* statement terminates with a semi-colon ';' */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2552 if (NCH(CHILD(ch, j)) == 0) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2553 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2554 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2555 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2556 s = ast_for_stmt(c, CHILD(ch, j)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2557 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2558 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2559 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2560 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2561 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2562 } |
| 35742 | 2563 } |
| 2564 assert(pos == seq->size); | |
| 2565 return seq; | |
| 2566 } | |
| 2567 | |
| 2568 static stmt_ty | |
| 2569 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2570 { | |
| 2571 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2572 ['else' ':' suite] | |
| 2573 */ | |
| 2574 char *s; | |
| 2575 | |
| 2576 REQ(n, if_stmt); | |
| 2577 | |
| 2578 if (NCH(n) == 4) { | |
| 2579 expr_ty expression; | |
| 2580 asdl_seq *suite_seq; | |
| 2581 | |
| 2582 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2583 if (!expression) | |
| 2584 return NULL; | |
| 2585 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2586 if (!suite_seq) |
| 35742 | 2587 return NULL; |
| 2588 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2589 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2590 c->c_arena); |
| 35742 | 2591 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2592 |
| 35742 | 2593 s = STR(CHILD(n, 4)); |
| 2594 /* s[2], the third character in the string, will be | |
| 2595 's' for el_s_e, or | |
| 2596 'i' for el_i_f | |
| 2597 */ | |
| 2598 if (s[2] == 's') { | |
| 2599 expr_ty expression; | |
| 2600 asdl_seq *seq1, *seq2; | |
| 2601 | |
| 2602 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2603 if (!expression) | |
| 2604 return NULL; | |
| 2605 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2606 if (!seq1) |
| 35742 | 2607 return NULL; |
| 2608 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2609 if (!seq2) |
| 35742 | 2610 return NULL; |
| 2611 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2612 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2613 c->c_arena); |
| 35742 | 2614 } |
| 2615 else if (s[2] == 'i') { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2616 int i, n_elif, has_else = 0; |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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|
2617 expr_ty expression; |
|
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|
2618 asdl_seq *suite_seq; |
|
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|
2619 asdl_seq *orelse = NULL; |
|
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|
2620 n_elif = NCH(n) - 4; |
| 35742 | 2621 /* must reference the child n_elif+1 since 'else' token is third, |
| 2622 not fourth, child from the end. */ | |
|
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|
2623 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
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|
2624 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
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diff
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|
2625 has_else = 1; |
|
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|
2626 n_elif -= 3; |
|
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|
2627 } |
|
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|
2628 n_elif /= 4; |
| 35742 | 2629 |
|
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|
2630 if (has_else) { |
|
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|
2631 asdl_seq *suite_seq2; |
| 35742 | 2632 |
|
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|
2633 orelse = asdl_seq_new(1, c->c_arena); |
|
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|
2634 if (!orelse) |
|
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|
2635 return NULL; |
| 35742 | 2636 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2637 if (!expression) |
| 35742 | 2638 return NULL; |
|
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|
2639 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
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|
2640 if (!suite_seq) |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2641 return NULL; |
|
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|
2642 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
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|
2643 if (!suite_seq2) |
| 35742 | 2644 return NULL; |
| 2645 | |
|
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|
2646 asdl_seq_SET(orelse, 0, |
|
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|
2647 If(expression, suite_seq, suite_seq2, |
|
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|
2648 LINENO(CHILD(n, NCH(n) - 6)), |
|
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|
2649 CHILD(n, NCH(n) - 6)->n_col_offset, |
|
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|
2650 c->c_arena)); |
|
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|
2651 /* the just-created orelse handled the last elif */ |
|
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2652 n_elif--; |
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|
2653 } |
| 35742 | 2654 |
|
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|
2655 for (i = 0; i < n_elif; i++) { |
|
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|
2656 int off = 5 + (n_elif - i - 1) * 4; |
|
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|
2657 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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|
2658 if (!newobj) |
|
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|
2659 return NULL; |
| 35742 | 2660 expression = ast_for_expr(c, CHILD(n, off)); |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2661 if (!expression) |
| 35742 | 2662 return NULL; |
| 2663 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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Cleanup a bit and make things more consistent.
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parents:
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|
2664 if (!suite_seq) |
| 35742 | 2665 return NULL; |
| 2666 | |
|
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|
2667 asdl_seq_SET(newobj, 0, |
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|
2668 If(expression, suite_seq, orelse, |
|
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|
2669 LINENO(CHILD(n, off)), |
|
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|
2670 CHILD(n, off)->n_col_offset, c->c_arena)); |
|
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|
2671 orelse = newobj; |
|
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|
2672 } |
|
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|
2673 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
2674 if (!expression) |
|
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|
2675 return NULL; |
|
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|
2676 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
|
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|
2677 if (!suite_seq) |
|
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|
2678 return NULL; |
|
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|
2679 return If(expression, suite_seq, orelse, |
|
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|
2680 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2681 } |
|
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Cleanup a bit and make things more consistent.
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|
2682 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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changeset
|
2683 PyErr_Format(PyExc_SystemError, |
|
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Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2684 "unexpected token in 'if' statement: %s", s); |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2685 return NULL; |
| 35742 | 2686 } |
| 2687 | |
| 2688 static stmt_ty | |
| 2689 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2690 { | |
| 2691 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2692 REQ(n, while_stmt); | |
| 2693 | |
| 2694 if (NCH(n) == 4) { | |
| 2695 expr_ty expression; | |
| 2696 asdl_seq *suite_seq; | |
| 2697 | |
| 2698 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2699 if (!expression) | |
| 2700 return NULL; | |
| 2701 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2702 if (!suite_seq) |
| 35742 | 2703 return NULL; |
|
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|
2704 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2705 } |
| 2706 else if (NCH(n) == 7) { | |
| 2707 expr_ty expression; | |
| 2708 asdl_seq *seq1, *seq2; | |
| 2709 | |
| 2710 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2711 if (!expression) | |
| 2712 return NULL; | |
| 2713 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2714 if (!seq1) |
| 35742 | 2715 return NULL; |
| 2716 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2717 if (!seq2) |
| 35742 | 2718 return NULL; |
| 2719 | |
|
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|
2720 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2721 } |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
2722 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2723 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2724 "wrong number of tokens for 'while' statement: %d", |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2725 NCH(n)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2726 return NULL; |
| 35742 | 2727 } |
| 2728 | |
| 2729 static stmt_ty | |
| 2730 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2731 { | |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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changeset
|
2732 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2733 expr_ty expression; |
| 2734 expr_ty target; | |
|
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|
2735 const node *node_target; |
| 35742 | 2736 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2737 REQ(n, for_stmt); | |
| 2738 | |
| 2739 if (NCH(n) == 9) { | |
|
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|
2740 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2741 if (!seq) |
| 2742 return NULL; | |
| 2743 } | |
| 2744 | |
|
39442
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|
2745 node_target = CHILD(n, 1); |
|
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|
2746 _target = ast_for_exprlist(c, node_target, Store); |
|
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changeset
|
2747 if (!_target) |
| 35742 | 2748 return NULL; |
|
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|
2749 /* Check the # of children rather than the length of _target, since |
|
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|
2750 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2751 if (NCH(node_target) == 1) |
|
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|
2752 target = (expr_ty)asdl_seq_GET(_target, 0); |
| 35742 | 2753 else |
|
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|
2754 target = Tuple(_target, Store, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2755 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2756 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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parents:
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diff
changeset
|
2757 if (!expression) |
| 35742 | 2758 return NULL; |
| 2759 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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de16a85c3b4c
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diff
changeset
|
2760 if (!suite_seq) |
| 35742 | 2761 return NULL; |
| 2762 | |
|
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
|
2763 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2764 c->c_arena); |
| 35742 | 2765 } |
| 2766 | |
| 2767 static excepthandler_ty | |
| 2768 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2769 { | |
|
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changeset
|
2770 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2771 REQ(exc, except_clause); |
| 2772 REQ(body, suite); | |
| 2773 | |
| 2774 if (NCH(exc) == 1) { | |
| 2775 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2776 if (!suite_seq) | |
| 2777 return NULL; | |
| 2778 | |
|
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changeset
|
2779 return excepthandler(NULL, NULL, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2780 exc->n_col_offset, c->c_arena); |
| 35742 | 2781 } |
| 2782 else if (NCH(exc) == 2) { | |
| 2783 expr_ty expression; | |
| 2784 asdl_seq *suite_seq; | |
| 2785 | |
| 2786 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2787 if (!expression) | |
| 2788 return NULL; | |
| 2789 suite_seq = ast_for_suite(c, body); | |
|
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de16a85c3b4c
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parents:
36066
diff
changeset
|
2790 if (!suite_seq) |
| 35742 | 2791 return NULL; |
| 2792 | |
|
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changeset
|
2793 return excepthandler(expression, NULL, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2794 exc->n_col_offset, c->c_arena); |
| 35742 | 2795 } |
| 2796 else if (NCH(exc) == 4) { | |
| 2797 asdl_seq *suite_seq; | |
| 2798 expr_ty expression; | |
|
40588
4bab65fcca8e
Some more changes related to the new except syntax and semantics,
Guido van Rossum <guido@python.org>
parents:
40529
diff
changeset
|
2799 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
40450
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2800 if (!e) |
| 35742 | 2801 return NULL; |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2802 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2803 if (!expression) |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2804 return NULL; |
| 35742 | 2805 suite_seq = ast_for_suite(c, body); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2806 if (!suite_seq) |
| 35742 | 2807 return NULL; |
| 2808 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2809 return excepthandler(expression, e, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2810 exc->n_col_offset, c->c_arena); |
| 35742 | 2811 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2812 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2813 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2814 "wrong number of children for 'except' clause: %d", |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2815 NCH(exc)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2816 return NULL; |
| 35742 | 2817 } |
| 2818 | |
| 2819 static stmt_ty | |
| 2820 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2821 { | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2822 const int nch = NCH(n); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2823 int n_except = (nch - 3)/3; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2824 asdl_seq *body, *orelse = NULL, *finally = NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2825 |
| 35742 | 2826 REQ(n, try_stmt); |
| 2827 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2828 body = ast_for_suite(c, CHILD(n, 2)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2829 if (body == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2830 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2831 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2832 if (TYPE(CHILD(n, nch - 3)) == NAME) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2833 if (strcmp(STR(CHILD(n, nch - 3)), "finally") == 0) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2834 if (nch >= 9 && TYPE(CHILD(n, nch - 6)) == NAME) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2835 /* we can assume it's an "else", |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2836 because nch >= 9 for try-else-finally and |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2837 it would otherwise have a type of except_clause */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2838 orelse = ast_for_suite(c, CHILD(n, nch - 4)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2839 if (orelse == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2840 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2841 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2842 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2843 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2844 finally = ast_for_suite(c, CHILD(n, nch - 1)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2845 if (finally == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2846 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2847 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2848 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2849 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2850 /* we can assume it's an "else", |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2851 otherwise it would have a type of except_clause */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2852 orelse = ast_for_suite(c, CHILD(n, nch - 1)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2853 if (orelse == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2854 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2855 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2856 } |
| 35742 | 2857 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2858 else if (TYPE(CHILD(n, nch - 3)) != except_clause) { |
|
35867
f4842f42700b
remove useless debug print helper. fix a couple of exceptions
Neal Norwitz <nnorwitz@gmail.com>
parents:
35799
diff
changeset
|
2859 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2860 return NULL; |
| 2861 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2862 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2863 if (n_except > 0) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2864 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2865 stmt_ty except_st; |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2866 /* process except statements to create a try ... except */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2867 asdl_seq *handlers = asdl_seq_new(n_except, c->c_arena); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2868 if (handlers == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2869 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2870 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2871 for (i = 0; i < n_except; i++) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2872 excepthandler_ty e = ast_for_except_clause(c, CHILD(n, 3 + i * 3), |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2873 CHILD(n, 5 + i * 3)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2874 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2875 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2876 asdl_seq_SET(handlers, i, e); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2877 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2878 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2879 except_st = TryExcept(body, handlers, orelse, LINENO(n), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2880 n->n_col_offset, c->c_arena); |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2881 if (!finally) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2882 return except_st; |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2883 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2884 /* if a 'finally' is present too, we nest the TryExcept within a |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2885 TryFinally to emulate try ... except ... finally */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2886 body = asdl_seq_new(1, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2887 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2888 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2889 asdl_seq_SET(body, 0, except_st); |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2890 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2891 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2892 /* must be a try ... finally (except clauses are in body, if any exist) */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2893 assert(finally != NULL); |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2894 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2895 } |
| 2896 | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2897 static expr_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2898 ast_for_with_var(struct compiling *c, const node *n) |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2899 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2900 REQ(n, with_var); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2901 return ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2902 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2903 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2904 /* with_stmt: 'with' test [ with_var ] ':' suite */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2905 static stmt_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2906 ast_for_with_stmt(struct compiling *c, const node *n) |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2907 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2908 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2909 int suite_index = 3; /* skip 'with', test, and ':' */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2910 asdl_seq *suite_seq; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2911 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2912 assert(TYPE(n) == with_stmt); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2913 context_expr = ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2914 if (TYPE(CHILD(n, 2)) == with_var) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2915 optional_vars = ast_for_with_var(c, CHILD(n, 2)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2916 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2917 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2918 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2919 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2920 if (!set_context(optional_vars, Store, n)) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2921 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2922 } |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2923 suite_index = 4; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2924 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2925 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2926 suite_seq = ast_for_suite(c, CHILD(n, suite_index)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2927 if (!suite_seq) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2928 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2929 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2930 return With(context_expr, optional_vars, suite_seq, LINENO(n), |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2931 n->n_col_offset, c->c_arena); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2932 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2933 |
| 35742 | 2934 static stmt_ty |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2935 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 2936 { |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2937 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2938 asdl_seq *s; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2939 expr_ty call, dummy; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2940 |
| 35742 | 2941 REQ(n, classdef); |
| 2942 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2943 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 2944 s = ast_for_suite(c, CHILD(n, 3)); |
| 2945 if (!s) | |
| 2946 return NULL; | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2947 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
2948 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2949 } |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2950 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2951 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2952 s = ast_for_suite(c, CHILD(n,5)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2953 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2954 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2955 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2956 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2957 } |
| 2958 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2959 /* class NAME '(' arglist ')' ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2960 /* build up a fake Call node so we can extract its pieces */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2961 dummy = Name(NEW_IDENTIFIER(CHILD(n, 1)), Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2962 call = ast_for_call(c, CHILD(n, 3), dummy); |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2963 if (!call) |
| 35742 | 2964 return NULL; |
| 2965 s = ast_for_suite(c, CHILD(n, 6)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2966 if (!s) |
| 35742 | 2967 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2968 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2969 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2970 call->v.Call.args, call->v.Call.keywords, |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2971 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2972 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2973 } |
| 2974 | |
| 2975 static stmt_ty | |
| 2976 ast_for_stmt(struct compiling *c, const node *n) | |
| 2977 { | |
| 2978 if (TYPE(n) == stmt) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2979 assert(NCH(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2980 n = CHILD(n, 0); |
| 35742 | 2981 } |
| 2982 if (TYPE(n) == simple_stmt) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2983 assert(num_stmts(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2984 n = CHILD(n, 0); |
| 35742 | 2985 } |
| 2986 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
2987 REQ(n, small_stmt); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
2988 n = CHILD(n, 0); |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2989 /* small_stmt: expr_stmt | del_stmt | pass_stmt | flow_stmt |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2990 | import_stmt | global_stmt | nonlocal_stmt | assert_stmt |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2991 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2992 switch (TYPE(n)) { |
| 35742 | 2993 case expr_stmt: |
| 2994 return ast_for_expr_stmt(c, n); | |
| 2995 case del_stmt: | |
| 2996 return ast_for_del_stmt(c, n); | |
| 2997 case pass_stmt: | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2998 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2999 case flow_stmt: |
| 3000 return ast_for_flow_stmt(c, n); | |
| 3001 case import_stmt: | |
| 3002 return ast_for_import_stmt(c, n); | |
| 3003 case global_stmt: | |
| 3004 return ast_for_global_stmt(c, n); | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3005 case nonlocal_stmt: |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3006 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3007 case assert_stmt: |
| 3008 return ast_for_assert_stmt(c, n); | |
| 3009 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3010 PyErr_Format(PyExc_SystemError, |
| 35742 | 3011 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3012 TYPE(n), NCH(n)); | |
| 3013 return NULL; | |
| 3014 } | |
| 3015 } | |
| 3016 else { | |
| 3017 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3018 | funcdef | classdef | decorated |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3019 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3020 node *ch = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3021 REQ(n, compound_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3022 switch (TYPE(ch)) { |
| 35742 | 3023 case if_stmt: |
| 3024 return ast_for_if_stmt(c, ch); | |
| 3025 case while_stmt: | |
| 3026 return ast_for_while_stmt(c, ch); | |
| 3027 case for_stmt: | |
| 3028 return ast_for_for_stmt(c, ch); | |
| 3029 case try_stmt: | |
| 3030 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3031 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3032 return ast_for_with_stmt(c, ch); |
| 35742 | 3033 case funcdef: |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3034 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3035 case classdef: |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
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parents:
41717
diff
changeset
|
3036 return ast_for_classdef(c, ch, NULL); |
|
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3037 case decorated: |
|
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3038 return ast_for_decorated(c, ch); |
| 35742 | 3039 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3040 PyErr_Format(PyExc_SystemError, |
| 35742 | 3041 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3042 TYPE(n), NCH(n)); | |
| 3043 return NULL; | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3044 } |
| 35742 | 3045 } |
| 3046 } | |
| 3047 | |
| 3048 static PyObject * | |
| 3049 parsenumber(const char *s) | |
| 3050 { | |
|
41554
06145fbc7ab9
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diff
changeset
|
3051 const char *end; |
|
06145fbc7ab9
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parents:
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diff
changeset
|
3052 long x; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
3053 double dx; |
| 35742 | 3054 #ifndef WITHOUT_COMPLEX |
|
41554
06145fbc7ab9
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diff
changeset
|
3055 Py_complex c; |
|
06145fbc7ab9
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diff
changeset
|
3056 int imflag; |
| 35742 | 3057 #endif |
| 3058 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
3059 errno = 0; |
|
06145fbc7ab9
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parents:
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diff
changeset
|
3060 end = s + strlen(s) - 1; |
| 35742 | 3061 #ifndef WITHOUT_COMPLEX |
|
41554
06145fbc7ab9
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parents:
41509
diff
changeset
|
3062 imflag = *end == 'j' || *end == 'J'; |
| 35742 | 3063 #endif |
|
41554
06145fbc7ab9
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diff
changeset
|
3064 if (s[0] == '0') { |
|
06145fbc7ab9
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parents:
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diff
changeset
|
3065 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
06145fbc7ab9
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diff
changeset
|
3066 if (x < 0 && errno == 0) { |
|
06145fbc7ab9
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parents:
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diff
changeset
|
3067 return PyLong_FromString((char *)s, |
|
06145fbc7ab9
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diff
changeset
|
3068 (char **)0, |
|
06145fbc7ab9
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parents:
41509
diff
changeset
|
3069 0); |
|
40450
cc992d75d5b3
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parents:
40215
diff
changeset
|
3070 } |
|
41554
06145fbc7ab9
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diff
changeset
|
3071 } |
|
06145fbc7ab9
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diff
changeset
|
3072 else |
|
06145fbc7ab9
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diff
changeset
|
3073 x = PyOS_strtol((char *)s, (char **)&end, 0); |
|
06145fbc7ab9
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diff
changeset
|
3074 if (*end == '\0') { |
|
06145fbc7ab9
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diff
changeset
|
3075 if (errno != 0) |
|
06145fbc7ab9
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parents:
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diff
changeset
|
3076 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>
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|
3077 return PyLong_FromLong(x); |
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3078 } |
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3079 /* XXX Huge floats may silently fail */ |
| 35742 | 3080 #ifndef WITHOUT_COMPLEX |
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3081 if (imflag) { |
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3082 c.real = 0.; |
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3083 PyFPE_START_PROTECT("atof", return 0) |
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3084 c.imag = PyOS_ascii_atof(s); |
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3085 PyFPE_END_PROTECT(c) |
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3086 return PyComplex_FromCComplex(c); |
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3087 } |
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3088 else |
| 35742 | 3089 #endif |
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3090 { |
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3091 PyFPE_START_PROTECT("atof", return 0) |
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3092 dx = PyOS_ascii_atof(s); |
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3093 PyFPE_END_PROTECT(dx) |
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3094 return PyFloat_FromDouble(dx); |
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3095 } |
| 35742 | 3096 } |
| 3097 | |
| 3098 static PyObject * | |
| 3099 decode_utf8(const char **sPtr, const char *end, char* encoding) | |
| 3100 { | |
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3101 PyObject *u, *v; |
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3102 char *s, *t; |
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3103 t = s = (char *)*sPtr; |
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3104 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
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3105 while (s < end && (*s & 0x80)) s++; |
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3106 *sPtr = s; |
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3107 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
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3108 if (u == NULL) |
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3109 return NULL; |
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3110 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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3111 Py_DECREF(u); |
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3112 return v; |
| 35742 | 3113 } |
| 3114 | |
| 3115 static PyObject * | |
| 3116 decode_unicode(const char *s, size_t len, int rawmode, const char *encoding) | |
| 3117 { | |
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3118 PyObject *v, *u; |
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3119 char *buf; |
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3120 char *p; |
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3121 const char *end; |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
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3122 |
|
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3123 if (encoding == NULL) { |
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3124 buf = (char *)s; |
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3125 u = NULL; |
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3126 } else if (strcmp(encoding, "iso-8859-1") == 0) { |
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3127 buf = (char *)s; |
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3128 u = NULL; |
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3129 } else { |
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3130 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ |
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3131 u = PyString_FromStringAndSize((char *)NULL, len * 4); |
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3132 if (u == NULL) |
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3133 return NULL; |
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3134 p = buf = PyString_AsString(u); |
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3135 end = s + len; |
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3136 while (s < end) { |
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3137 if (*s == '\\') { |
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3138 *p++ = *s++; |
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3139 if (*s & 0x80) { |
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3140 strcpy(p, "u005c"); |
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3141 p += 5; |
|
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Thomas Wouters <thomas@python.org>
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3142 } |
|
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3143 } |
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3144 if (*s & 0x80) { /* XXX inefficient */ |
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3145 PyObject *w; |
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3146 char *r; |
|
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3147 Py_ssize_t rn, i; |
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3148 w = decode_utf8(&s, end, "utf-16-be"); |
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3149 if (w == NULL) { |
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3150 Py_DECREF(u); |
|
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3151 return NULL; |
|
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3152 } |
|
43777
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3153 r = PyString_AS_STRING(w); |
|
0d462d789b18
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3154 rn = Py_Size(w); |
|
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3155 assert(rn % 2 == 0); |
|
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3156 for (i = 0; i < rn; i += 2) { |
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3157 sprintf(p, "\\u%02x%02x", |
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3158 r[i + 0] & 0xFF, |
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3159 r[i + 1] & 0xFF); |
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3160 p += 6; |
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3161 } |
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|
3162 Py_DECREF(w); |
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3163 } else { |
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3164 *p++ = *s++; |
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|
3165 } |
|
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|
3166 } |
|
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3167 len = p - buf; |
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3168 s = buf; |
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3169 } |
|
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|
3170 if (rawmode) |
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3171 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
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3172 else |
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3173 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
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|
3174 Py_XDECREF(u); |
|
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3175 return v; |
| 35742 | 3176 } |
| 3177 | |
| 3178 /* s is a Python string literal, including the bracketing quote characters, | |
|
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|
3179 * and r &/or b prefixes (if any), and embedded escape sequences (if any). |
| 35742 | 3180 * parsestr parses it, and returns the decoded Python string object. |
| 3181 */ | |
| 3182 static PyObject * | |
| 40894 | 3183 parsestr(const node *n, const char *encoding, int *bytesmode) |
| 35742 | 3184 { |
|
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3185 size_t len; |
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|
3186 const char *s = STR(n); |
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|
3187 int quote = Py_CHARMASK(*s); |
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3188 int rawmode = 0; |
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|
3189 int need_encoding; |
| 35742 | 3190 |
|
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3191 if (isalpha(quote)) { |
|
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3192 if (quote == 'b' || quote == 'B') { |
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3193 quote = *++s; |
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3194 *bytesmode = 1; |
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3195 } |
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3196 if (quote == 'r' || quote == 'R') { |
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3197 quote = *++s; |
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3198 rawmode = 1; |
|
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|
3199 } |
|
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3200 } |
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3201 if (quote != '\'' && quote != '\"') { |
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3202 PyErr_BadInternalCall(); |
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Guido van Rossum <guido@python.org>
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diff
changeset
|
3203 return NULL; |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3204 } |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3205 s++; |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3206 len = strlen(s); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
3207 if (len > INT_MAX) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3208 PyErr_SetString(PyExc_OverflowError, |
|
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Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
3209 "string to parse is too long"); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3210 return NULL; |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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changeset
|
3211 } |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3212 if (s[--len] != quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3213 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
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diff
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|
3214 return NULL; |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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changeset
|
3215 } |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3216 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3217 s += 2; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3218 len -= 2; |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3219 if (s[--len] != quote || s[--len] != quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3220 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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3221 return NULL; |
| 40894 | 3222 } |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3223 } |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3224 if (!*bytesmode && !rawmode) { |
|
41554
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
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3225 return decode_unicode(s, len, rawmode, encoding); |
|
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Guido van Rossum <guido@python.org>
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3226 } |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3227 if (*bytesmode) { |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3228 /* Disallow non-ascii characters (but not escapes) */ |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3229 const char *c; |
|
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Merged revisions 53952-54987 via svnmerge from
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3230 for (c = s; *c; c++) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3231 if (Py_CHARMASK(*c) >= 0x80) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3232 ast_error(n, "bytes can only contain ASCII " |
|
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|
3233 "literal characters."); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3234 return NULL; |
|
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|
3235 } |
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Merged revisions 53952-54987 via svnmerge from
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|
3236 } |
|
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|
3237 } |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3238 need_encoding = (!*bytesmode && encoding != NULL && |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3239 strcmp(encoding, "utf-8") != 0 && |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3240 strcmp(encoding, "iso-8859-1") != 0); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3241 if (rawmode || strchr(s, '\\') == NULL) { |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3242 if (need_encoding) { |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3243 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3244 if (u == NULL || !*bytesmode) |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3245 return u; |
|
41554
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Merged revisions 53952-54987 via svnmerge from
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diff
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|
3246 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3247 Py_DECREF(u); |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3248 return v; |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3249 } else if (*bytesmode) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3250 return PyString_FromStringAndSize(s, len); |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3251 } else if (strcmp(encoding, "utf-8") == 0) { |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3252 return PyUnicode_FromStringAndSize(s, len); |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3253 } else { |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3254 return PyUnicode_DecodeLatin1(s, len, NULL); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3255 } |
|
41554
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Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
3256 } |
| 35742 | 3257 |
|
41698
7d49038e99c9
Remove support for u"..." literals.
Guido van Rossum <guido@python.org>
parents:
41595
diff
changeset
|
3258 return PyString_DecodeEscape(s, len, NULL, 1, |
|
41554
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3259 need_encoding ? encoding : NULL); |
| 35742 | 3260 } |
| 3261 | |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3262 /* Build a Python string object out of a STRING+ atom. This takes care of |
| 35742 | 3263 * compile-time literal catenation, calling parsestr() on each piece, and |
| 3264 * pasting the intermediate results together. | |
| 3265 */ | |
| 3266 static PyObject * | |
| 40894 | 3267 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3268 { |
|
41554
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3269 PyObject *v; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3270 int i; |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3271 REQ(CHILD(n, 0), STRING); |
|
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|
3272 v = parsestr(CHILD(n, 0), c->c_encoding, bytesmode); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3273 if (v != NULL) { |
|
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Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
3274 /* String literal concatenation */ |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3275 for (i = 1; i < NCH(n); i++) { |
|
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changeset
|
3276 PyObject *s; |
|
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|
3277 int subbm = 0; |
|
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diff
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|
3278 s = parsestr(CHILD(n, i), c->c_encoding, &subbm); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3279 if (s == NULL) |
|
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Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
3280 goto onError; |
|
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Guido van Rossum <guido@python.org>
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diff
changeset
|
3281 if (*bytesmode != subbm) { |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3282 ast_error(n, "cannot mix bytes and nonbytes literals"); |
|
41554
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|
3283 goto onError; |
|
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changeset
|
3284 } |
|
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changeset
|
3285 if (PyString_Check(v) && PyString_Check(s)) { |
|
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changeset
|
3286 PyString_ConcatAndDel(&v, s); |
|
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changeset
|
3287 if (v == NULL) |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3288 goto onError; |
|
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changeset
|
3289 } |
|
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|
3290 else { |
|
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changeset
|
3291 PyObject *temp = PyUnicode_Concat(v, s); |
|
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|
3292 Py_DECREF(s); |
|
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|
3293 Py_DECREF(v); |
|
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|
3294 v = temp; |
|
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changeset
|
3295 if (v == NULL) |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3296 goto onError; |
|
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Guido van Rossum <guido@python.org>
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diff
changeset
|
3297 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3298 } |
|
41554
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|
3299 } |
|
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|
3300 return v; |
| 35742 | 3301 |
|
41554
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changeset
|
3302 onError: |
|
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changeset
|
3303 Py_XDECREF(v); |
|
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changeset
|
3304 return NULL; |
| 35742 | 3305 } |