Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 43961:b231bda653a4
PyString_AsString is permissive and accepts unicode strings.
Replace it with PyUnicode_AsString when the argument is known to be a str.
| author | Amaury Forgeot d'Arc <amauryfa@gmail.com> |
|---|---|
| date | Thu, 22 Nov 2007 02:48:12 +0000 |
| parents | 068655054b0d |
| children | ebc7389297d6 |
| 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 */ |
| 35742 | 22 }; |
| 23 | |
| 24 static asdl_seq *seq_for_testlist(struct compiling *, const node *); | |
| 25 static expr_ty ast_for_expr(struct compiling *, const node *); | |
| 26 static stmt_ty ast_for_stmt(struct compiling *, const node *); | |
| 27 static asdl_seq *ast_for_suite(struct compiling *, const node *); | |
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28 static asdl_seq *ast_for_exprlist(struct compiling *, const node *, |
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29 expr_context_ty); |
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30 static expr_ty ast_for_testlist(struct compiling *, const node *); |
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31 static stmt_ty ast_for_classdef(struct compiling *, const node *, asdl_seq *); |
| 35742 | 32 |
| 33 /* Note different signature for ast_for_call */ | |
| 34 static expr_ty ast_for_call(struct compiling *, const node *, expr_ty); | |
| 35 | |
| 36 static PyObject *parsenumber(const char *); | |
| 40894 | 37 static PyObject *parsestr(const node *n, const char *encoding, int *bytesmode); |
| 38 static PyObject *parsestrplus(struct compiling *, const node *n, | |
| 39 int *bytesmode); | |
| 35742 | 40 |
| 41 #ifndef LINENO | |
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42 #define LINENO(n) ((n)->n_lineno) |
| 35742 | 43 #endif |
| 44 | |
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45 #define COMP_GENEXP 0 |
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46 #define COMP_LISTCOMP 1 |
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47 #define COMP_SETCOMP 2 |
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48 |
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49 static identifier |
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50 new_identifier(const char* n, PyArena *arena) |
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51 { |
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52 PyObject* id = PyUnicode_DecodeUTF8(n, strlen(n), NULL); |
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53 Py_UNICODE *u = PyUnicode_AS_UNICODE(id); |
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54 /* Check whether there are non-ASCII characters in the |
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55 identifier; if so, normalize to NFKC. */ |
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56 for (; *u; u++) { |
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57 if (*u >= 128) { |
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58 PyObject *m = PyImport_ImportModule("unicodedata"); |
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59 PyObject *id2; |
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60 if (!m) |
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61 return NULL; |
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62 id2 = PyObject_CallMethod(m, "normalize", "sO", "NFKC", id); |
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63 Py_DECREF(m); |
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64 if (!id2) |
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65 return NULL; |
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66 Py_DECREF(id); |
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67 id = id2; |
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68 break; |
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69 } |
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70 } |
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71 PyUnicode_InternInPlace(&id); |
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72 PyArena_AddPyObject(arena, id); |
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73 return id; |
| 35742 | 74 } |
| 75 | |
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76 #define NEW_IDENTIFIER(n) new_identifier(STR(n), c->c_arena) |
| 35742 | 77 |
| 78 /* This routine provides an invalid object for the syntax error. | |
| 79 The outermost routine must unpack this error and create the | |
| 80 proper object. We do this so that we don't have to pass | |
| 81 the filename to everything function. | |
| 82 | |
| 83 XXX Maybe we should just pass the filename... | |
| 84 */ | |
| 85 | |
| 86 static int | |
| 87 ast_error(const node *n, const char *errstr) | |
| 88 { | |
| 89 PyObject *u = Py_BuildValue("zi", errstr, LINENO(n)); | |
| 90 if (!u) | |
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91 return 0; |
| 35742 | 92 PyErr_SetObject(PyExc_SyntaxError, u); |
| 93 Py_DECREF(u); | |
| 94 return 0; | |
| 95 } | |
| 96 | |
| 97 static void | |
| 98 ast_error_finish(const char *filename) | |
| 99 { | |
| 100 PyObject *type, *value, *tback, *errstr, *loc, *tmp; | |
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101 long lineno; |
| 35742 | 102 |
| 103 assert(PyErr_Occurred()); | |
| 104 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
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105 return; |
| 35742 | 106 |
| 107 PyErr_Fetch(&type, &value, &tback); | |
| 108 errstr = PyTuple_GetItem(value, 0); | |
| 109 if (!errstr) | |
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110 return; |
| 35742 | 111 Py_INCREF(errstr); |
| 112 lineno = PyInt_AsLong(PyTuple_GetItem(value, 1)); | |
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113 if (lineno == -1) { |
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114 Py_DECREF(errstr); |
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115 return; |
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116 } |
| 35742 | 117 Py_DECREF(value); |
| 118 | |
| 119 loc = PyErr_ProgramText(filename, lineno); | |
| 120 if (!loc) { | |
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121 Py_INCREF(Py_None); |
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122 loc = Py_None; |
| 35742 | 123 } |
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124 tmp = Py_BuildValue("(zlOO)", filename, lineno, Py_None, loc); |
| 35742 | 125 Py_DECREF(loc); |
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126 if (!tmp) { |
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127 Py_DECREF(errstr); |
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128 return; |
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129 } |
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130 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 131 Py_DECREF(errstr); |
| 132 Py_DECREF(tmp); | |
| 133 if (!value) | |
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134 return; |
| 35742 | 135 PyErr_Restore(type, value, tback); |
| 136 } | |
| 137 | |
| 138 /* num_stmts() returns number of contained statements. | |
| 139 | |
| 140 Use this routine to determine how big a sequence is needed for | |
| 141 the statements in a parse tree. Its raison d'etre is this bit of | |
| 142 grammar: | |
| 143 | |
| 144 stmt: simple_stmt | compound_stmt | |
| 145 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 146 | |
| 147 A simple_stmt can contain multiple small_stmt elements joined | |
| 148 by semicolons. If the arg is a simple_stmt, the number of | |
| 149 small_stmt elements is returned. | |
| 150 */ | |
| 151 | |
| 152 static int | |
| 153 num_stmts(const node *n) | |
| 154 { | |
| 155 int i, l; | |
| 156 node *ch; | |
| 157 | |
| 158 switch (TYPE(n)) { | |
| 159 case single_input: | |
| 160 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 161 return 0; | |
| 162 else | |
| 163 return num_stmts(CHILD(n, 0)); | |
| 164 case file_input: | |
| 165 l = 0; | |
| 166 for (i = 0; i < NCH(n); i++) { | |
| 167 ch = CHILD(n, i); | |
| 168 if (TYPE(ch) == stmt) | |
| 169 l += num_stmts(ch); | |
| 170 } | |
| 171 return l; | |
| 172 case stmt: | |
| 173 return num_stmts(CHILD(n, 0)); | |
| 174 case compound_stmt: | |
| 175 return 1; | |
| 176 case simple_stmt: | |
| 177 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 178 case suite: | |
| 179 if (NCH(n) == 1) | |
| 180 return num_stmts(CHILD(n, 0)); | |
| 181 else { | |
| 182 l = 0; | |
| 183 for (i = 2; i < (NCH(n) - 1); i++) | |
| 184 l += num_stmts(CHILD(n, i)); | |
| 185 return l; | |
| 186 } | |
| 187 default: { | |
| 188 char buf[128]; | |
| 189 | |
| 190 sprintf(buf, "Non-statement found: %d %d\n", | |
| 191 TYPE(n), NCH(n)); | |
| 192 Py_FatalError(buf); | |
| 193 } | |
| 194 } | |
| 195 assert(0); | |
| 196 return 0; | |
| 197 } | |
| 198 | |
| 199 /* Transform the CST rooted at node * to the appropriate AST | |
| 200 */ | |
| 201 | |
| 202 mod_ty | |
|
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203 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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204 PyArena *arena) |
| 35742 | 205 { |
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206 int i, j, k, num; |
| 35742 | 207 asdl_seq *stmts = NULL; |
| 208 stmt_ty s; | |
| 209 node *ch; | |
| 210 struct compiling c; | |
| 211 | |
| 212 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
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213 c.c_encoding = "utf-8"; |
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214 if (TYPE(n) == encoding_decl) { |
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215 #if 0 |
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216 ast_error(n, "encoding declaration in Unicode string"); |
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217 goto error; |
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218 #endif |
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219 n = CHILD(n, 0); |
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220 } |
| 35742 | 221 } else if (TYPE(n) == encoding_decl) { |
| 222 c.c_encoding = STR(n); | |
| 223 n = CHILD(n, 0); | |
| 224 } else { | |
| 42403 | 225 /* PEP 3120 */ |
| 226 c.c_encoding = "utf-8"; | |
| 35742 | 227 } |
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228 c.c_arena = arena; |
| 35742 | 229 |
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230 k = 0; |
| 35742 | 231 switch (TYPE(n)) { |
| 232 case file_input: | |
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233 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 234 if (!stmts) |
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235 return NULL; |
| 35742 | 236 for (i = 0; i < NCH(n) - 1; i++) { |
| 237 ch = CHILD(n, i); | |
| 238 if (TYPE(ch) == NEWLINE) | |
| 239 continue; | |
| 240 REQ(ch, stmt); | |
| 241 num = num_stmts(ch); | |
| 242 if (num == 1) { | |
| 243 s = ast_for_stmt(&c, ch); | |
| 244 if (!s) | |
| 245 goto error; | |
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246 asdl_seq_SET(stmts, k++, s); |
| 35742 | 247 } |
| 248 else { | |
| 249 ch = CHILD(ch, 0); | |
| 250 REQ(ch, simple_stmt); | |
| 251 for (j = 0; j < num; j++) { | |
| 252 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 253 if (!s) | |
| 254 goto error; | |
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255 asdl_seq_SET(stmts, k++, s); |
| 35742 | 256 } |
| 257 } | |
| 258 } | |
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259 return Module(stmts, arena); |
| 35742 | 260 case eval_input: { |
| 261 expr_ty testlist_ast; | |
| 262 | |
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263 /* XXX Why not comp_for here? */ |
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264 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 265 if (!testlist_ast) |
| 266 goto error; | |
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267 return Expression(testlist_ast, arena); |
| 35742 | 268 } |
| 269 case single_input: | |
| 270 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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271 stmts = asdl_seq_new(1, arena); |
| 35742 | 272 if (!stmts) |
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273 goto error; |
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274 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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275 arena)); |
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276 if (!asdl_seq_GET(stmts, 0)) |
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277 goto error; |
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278 return Interactive(stmts, arena); |
| 35742 | 279 } |
| 280 else { | |
| 281 n = CHILD(n, 0); | |
| 282 num = num_stmts(n); | |
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283 stmts = asdl_seq_new(num, arena); |
| 35742 | 284 if (!stmts) |
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285 goto error; |
| 35742 | 286 if (num == 1) { |
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287 s = ast_for_stmt(&c, n); |
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288 if (!s) |
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289 goto error; |
| 35742 | 290 asdl_seq_SET(stmts, 0, s); |
| 291 } | |
| 292 else { | |
| 293 /* Only a simple_stmt can contain multiple statements. */ | |
| 294 REQ(n, simple_stmt); | |
| 295 for (i = 0; i < NCH(n); i += 2) { | |
| 296 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 297 break; | |
| 298 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 299 if (!s) | |
| 300 goto error; | |
| 301 asdl_seq_SET(stmts, i / 2, s); | |
| 302 } | |
| 303 } | |
| 304 | |
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305 return Interactive(stmts, arena); |
| 35742 | 306 } |
| 307 default: | |
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308 PyErr_Format(PyExc_SystemError, |
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309 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 310 goto error; |
| 311 } | |
| 312 error: | |
| 313 ast_error_finish(filename); | |
| 314 return NULL; | |
| 315 } | |
| 316 | |
| 317 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 318 */ | |
| 319 | |
| 320 static operator_ty | |
| 321 get_operator(const node *n) | |
| 322 { | |
| 323 switch (TYPE(n)) { | |
| 324 case VBAR: | |
| 325 return BitOr; | |
| 326 case CIRCUMFLEX: | |
| 327 return BitXor; | |
| 328 case AMPER: | |
| 329 return BitAnd; | |
| 330 case LEFTSHIFT: | |
| 331 return LShift; | |
| 332 case RIGHTSHIFT: | |
| 333 return RShift; | |
| 334 case PLUS: | |
| 335 return Add; | |
| 336 case MINUS: | |
| 337 return Sub; | |
| 338 case STAR: | |
| 339 return Mult; | |
| 340 case SLASH: | |
| 341 return Div; | |
| 342 case DOUBLESLASH: | |
| 343 return FloorDiv; | |
| 344 case PERCENT: | |
| 345 return Mod; | |
| 346 default: | |
|
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347 return (operator_ty)0; |
| 35742 | 348 } |
| 349 } | |
| 350 | |
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351 static const char* FORBIDDEN[] = { |
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352 "None", |
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353 "True", |
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354 "False", |
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355 NULL, |
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356 }; |
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357 |
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358 static int |
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359 forbidden_name(expr_ty e, const node *n) |
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360 { |
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361 const char **p; |
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362 assert(PyUnicode_Check(e->v.Name.id)); |
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363 for (p = FORBIDDEN; *p; p++) { |
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364 if (PyUnicode_CompareWithASCIIString(e->v.Name.id, *p) == 0) { |
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365 ast_error(n, "assignment to keyword"); |
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366 return 1; |
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367 } |
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368 } |
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369 return 0; |
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370 } |
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371 |
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372 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 373 |
| 374 Only sets context for expr kinds that "can appear in assignment context" | |
| 375 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 376 an appropriate syntax error and returns false. | |
| 377 */ | |
| 378 | |
| 379 static int | |
| 380 set_context(expr_ty e, expr_context_ty ctx, const node *n) | |
| 381 { | |
| 382 asdl_seq *s = NULL; | |
|
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383 /* If a particular expression type can't be used for assign / delete, |
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384 set expr_name to its name and an error message will be generated. |
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385 */ |
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386 const char* expr_name = NULL; |
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387 |
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388 /* The ast defines augmented store and load contexts, but the |
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389 implementation here doesn't actually use them. The code may be |
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390 a little more complex than necessary as a result. It also means |
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391 that expressions in an augmented assignment have a Store context. |
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392 Consider restructuring so that augmented assignment uses |
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393 set_context(), too. |
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394 */ |
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395 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 396 |
| 397 switch (e->kind) { | |
| 398 case Attribute_kind: | |
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399 e->v.Attribute.ctx = ctx; |
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400 break; |
| 35742 | 401 case Subscript_kind: |
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402 e->v.Subscript.ctx = ctx; |
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403 break; |
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404 case Starred_kind: |
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405 e->v.Starred.ctx = ctx; |
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406 if (!set_context(e->v.Starred.value, ctx, n)) |
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407 return 0; |
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408 break; |
| 35742 | 409 case Name_kind: |
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410 if (ctx == Store) { |
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411 if (forbidden_name(e, n)) |
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412 return 0; /* forbidden_name() calls ast_error() */ |
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413 } |
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414 e->v.Name.ctx = ctx; |
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415 break; |
| 35742 | 416 case List_kind: |
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417 e->v.List.ctx = ctx; |
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418 s = e->v.List.elts; |
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419 break; |
| 35742 | 420 case Tuple_kind: |
| 421 if (asdl_seq_LEN(e->v.Tuple.elts) == 0) | |
| 422 return ast_error(n, "can't assign to ()"); | |
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423 e->v.Tuple.ctx = ctx; |
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424 s = e->v.Tuple.elts; |
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425 break; |
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426 case Lambda_kind: |
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427 expr_name = "lambda"; |
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428 break; |
| 35742 | 429 case Call_kind: |
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430 expr_name = "function call"; |
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431 break; |
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432 case BoolOp_kind: |
| 35742 | 433 case BinOp_kind: |
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434 case UnaryOp_kind: |
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435 expr_name = "operator"; |
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436 break; |
| 35742 | 437 case GeneratorExp_kind: |
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438 expr_name = "generator expression"; |
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439 break; |
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440 case Yield_kind: |
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441 expr_name = "yield expression"; |
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442 break; |
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443 case ListComp_kind: |
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444 expr_name = "list comprehension"; |
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446 case SetComp_kind: |
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447 expr_name = "set comprehension"; |
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449 case DictComp_kind: |
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450 expr_name = "dict comprehension"; |
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452 case Dict_kind: |
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453 case Set_kind: |
| 35742 | 454 case Num_kind: |
| 455 case Str_kind: | |
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456 expr_name = "literal"; |
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458 case Ellipsis_kind: |
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459 expr_name = "Ellipsis"; |
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460 break; |
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461 case Compare_kind: |
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462 expr_name = "comparison"; |
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463 break; |
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464 case IfExp_kind: |
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465 expr_name = "conditional expression"; |
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466 break; |
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467 default: |
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468 PyErr_Format(PyExc_SystemError, |
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469 "unexpected expression in assignment %d (line %d)", |
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470 e->kind, e->lineno); |
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471 return 0; |
| 35742 | 472 } |
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473 /* Check for error string set by switch */ |
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474 if (expr_name) { |
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475 char buf[300]; |
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476 PyOS_snprintf(buf, sizeof(buf), |
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477 "can't %s %s", |
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478 ctx == Store ? "assign to" : "delete", |
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479 expr_name); |
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480 return ast_error(n, buf); |
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481 } |
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482 |
| 35742 | 483 /* If the LHS is a list or tuple, we need to set the assignment |
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484 context for all the contained elements. |
| 35742 | 485 */ |
| 486 if (s) { | |
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487 int i; |
| 35742 | 488 |
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489 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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490 if (!set_context((expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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491 return 0; |
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492 } |
| 35742 | 493 } |
| 494 return 1; | |
| 495 } | |
| 496 | |
| 497 static operator_ty | |
| 498 ast_for_augassign(const node *n) | |
| 499 { | |
| 500 REQ(n, augassign); | |
| 501 n = CHILD(n, 0); | |
| 502 switch (STR(n)[0]) { | |
| 503 case '+': | |
| 504 return Add; | |
| 505 case '-': | |
| 506 return Sub; | |
| 507 case '/': | |
| 508 if (STR(n)[1] == '/') | |
| 509 return FloorDiv; | |
| 510 else | |
| 511 return Div; | |
| 512 case '%': | |
| 513 return Mod; | |
| 514 case '<': | |
| 515 return LShift; | |
| 516 case '>': | |
| 517 return RShift; | |
| 518 case '&': | |
| 519 return BitAnd; | |
| 520 case '^': | |
| 521 return BitXor; | |
| 522 case '|': | |
| 523 return BitOr; | |
| 524 case '*': | |
| 525 if (STR(n)[1] == '*') | |
| 526 return Pow; | |
| 527 else | |
| 528 return Mult; | |
| 529 default: | |
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530 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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531 return (operator_ty)0; |
| 35742 | 532 } |
| 533 } | |
| 534 | |
| 535 static cmpop_ty | |
| 536 ast_for_comp_op(const node *n) | |
| 537 { | |
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538 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 539 |'is' 'not' |
| 540 */ | |
| 541 REQ(n, comp_op); | |
| 542 if (NCH(n) == 1) { | |
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543 n = CHILD(n, 0); |
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544 switch (TYPE(n)) { |
| 35742 | 545 case LESS: |
| 546 return Lt; | |
| 547 case GREATER: | |
| 548 return Gt; | |
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549 case EQEQUAL: /* == */ |
| 35742 | 550 return Eq; |
| 551 case LESSEQUAL: | |
| 552 return LtE; | |
| 553 case GREATEREQUAL: | |
| 554 return GtE; | |
| 555 case NOTEQUAL: | |
| 556 return NotEq; | |
| 557 case NAME: | |
| 558 if (strcmp(STR(n), "in") == 0) | |
| 559 return In; | |
| 560 if (strcmp(STR(n), "is") == 0) | |
| 561 return Is; | |
| 562 default: | |
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563 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 564 STR(n)); |
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565 return (cmpop_ty)0; |
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566 } |
| 35742 | 567 } |
| 568 else if (NCH(n) == 2) { | |
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569 /* handle "not in" and "is not" */ |
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570 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 571 case NAME: |
| 572 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 573 return NotIn; | |
| 574 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 575 return IsNot; | |
| 576 default: | |
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577 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 578 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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579 return (cmpop_ty)0; |
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580 } |
| 35742 | 581 } |
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582 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 583 NCH(n)); |
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584 return (cmpop_ty)0; |
| 35742 | 585 } |
| 586 | |
| 587 static asdl_seq * | |
| 588 seq_for_testlist(struct compiling *c, const node *n) | |
| 589 { | |
| 590 /* testlist: test (',' test)* [','] */ | |
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591 asdl_seq *seq; |
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592 expr_ty expression; |
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593 int i; |
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594 assert(TYPE(n) == testlist || TYPE(n) == testlist_comp); |
| 35742 | 595 |
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596 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 597 if (!seq) |
| 598 return NULL; | |
| 599 | |
| 600 for (i = 0; i < NCH(n); i += 2) { | |
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601 assert(TYPE(CHILD(n, i)) == test || TYPE(CHILD(n, i)) == test_nocond); |
| 35742 | 602 |
| 603 expression = ast_for_expr(c, CHILD(n, i)); | |
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604 if (!expression) |
| 35742 | 605 return NULL; |
| 606 | |
| 607 assert(i / 2 < seq->size); | |
| 608 asdl_seq_SET(seq, i / 2, expression); | |
| 609 } | |
| 610 return seq; | |
| 611 } | |
| 612 | |
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613 static arg_ty |
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614 compiler_arg(struct compiling *c, const node *n) |
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615 { |
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616 identifier name; |
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617 expr_ty annotation = NULL; |
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618 node *ch; |
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619 |
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620 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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621 ch = CHILD(n, 0); |
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622 name = NEW_IDENTIFIER(ch); |
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623 if (!name) |
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624 return NULL; |
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625 |
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626 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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627 annotation = ast_for_expr(c, CHILD(n, 2)); |
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628 if (!annotation) |
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629 return NULL; |
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630 } |
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631 |
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632 return arg(name, annotation, c->c_arena); |
| 35742 | 633 } |
| 634 | |
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635 /* returns -1 if failed to handle keyword only arguments |
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636 returns new position to keep processing if successful |
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637 (',' tfpdef ['=' test])* |
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638 ^^^ |
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639 start pointing here |
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640 */ |
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641 static int |
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642 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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643 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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644 { |
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645 node *ch; |
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646 expr_ty expression, annotation; |
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647 arg_ty arg; |
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648 int i = start; |
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649 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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650 assert(kwonlyargs != NULL); |
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651 assert(kwdefaults != NULL); |
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652 while (i < NCH(n)) { |
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653 ch = CHILD(n, i); |
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654 switch (TYPE(ch)) { |
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655 case vfpdef: |
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656 case tfpdef: |
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657 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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658 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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659 asdl_seq_SET(kwdefaults, j, expression); |
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660 i += 2; /* '=' and test */ |
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661 } |
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662 else { /* setting NULL if no default value exists */ |
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663 asdl_seq_SET(kwdefaults, j, NULL); |
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664 } |
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665 if (NCH(ch) == 3) { |
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666 /* ch is NAME ':' test */ |
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667 annotation = ast_for_expr(c, CHILD(ch, 2)); |
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668 if (!annotation) { |
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669 ast_error(ch, "expected expression"); |
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670 goto error; |
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671 } |
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672 } |
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673 else { |
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674 annotation = NULL; |
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675 } |
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676 ch = CHILD(ch, 0); |
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677 arg = arg(NEW_IDENTIFIER(ch), annotation, c->c_arena); |
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678 if (!arg) { |
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679 ast_error(ch, "expecting name"); |
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680 goto error; |
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681 } |
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682 asdl_seq_SET(kwonlyargs, j++, arg); |
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683 i += 2; /* the name and the comma */ |
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684 break; |
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685 case DOUBLESTAR: |
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686 return i; |
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687 default: |
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688 ast_error(ch, "unexpected node"); |
|
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689 goto error; |
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690 } |
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691 } |
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692 return i; |
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693 error: |
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|
694 return -1; |
|
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|
695 } |
| 35742 | 696 |
|
36718
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|
697 /* Create AST for argument list. */ |
| 35742 | 698 |
| 699 static arguments_ty | |
| 700 ast_for_arguments(struct compiling *c, const node *n) | |
| 701 { | |
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702 /* This function handles both typedargslist (function definition) |
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703 and varargslist (lambda definition). |
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704 |
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705 parameters: '(' [typedargslist] ')' |
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706 typedargslist: ((tfpdef ['=' test] ',')* |
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707 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
|
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708 | '**' tfpdef) |
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709 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
|
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710 tfpdef: NAME [':' test] |
|
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711 varargslist: ((vfpdef ['=' test] ',')* |
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712 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
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713 | '**' vfpdef) |
|
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714 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
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|
715 vfpdef: NAME |
| 35742 | 716 */ |
|
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Jiwon Seo's PEP 3102 implementation.
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|
717 int i, j, k, nposargs = 0, nkwonlyargs = 0; |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
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|
718 int nposdefaults = 0, found_default = 0; |
|
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Jiwon Seo's PEP 3102 implementation.
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|
719 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 720 identifier vararg = NULL, kwarg = NULL; |
|
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|
721 arg_ty arg; |
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Neal Norwitz <nnorwitz@gmail.com>
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|
722 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 723 node *ch; |
| 724 | |
| 725 if (TYPE(n) == parameters) { | |
|
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parents:
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|
726 if (NCH(n) == 2) /* () as argument list */ |
|
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|
727 return arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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changeset
|
728 NULL, c->c_arena); |
|
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|
729 n = CHILD(n, 1); |
| 35742 | 730 } |
|
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Neal Norwitz <nnorwitz@gmail.com>
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|
731 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 732 |
|
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Jiwon Seo's PEP 3102 implementation.
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|
733 /* first count the number of positional args & defaults */ |
| 35742 | 734 for (i = 0; i < NCH(n); i++) { |
|
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|
735 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
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changeset
|
736 if (TYPE(ch) == STAR) { |
|
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changeset
|
737 /* skip star and possible argument */ |
|
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|
738 i++; |
|
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|
739 i += (TYPE(CHILD(n, i)) == tfpdef |
|
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|
740 || TYPE(CHILD(n, i)) == vfpdef); |
|
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|
741 break; |
|
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parents:
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|
742 } |
|
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|
743 if (TYPE(ch) == DOUBLESTAR) break; |
|
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|
744 if (TYPE(ch) == vfpdef || TYPE(ch) == tfpdef) nposargs++; |
|
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|
745 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
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|
746 } |
|
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changeset
|
747 /* count the number of keyword only args & |
|
1cce0526d9b0
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|
748 defaults for keyword only args */ |
|
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parents:
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|
749 for ( ; i < NCH(n); ++i) { |
|
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changeset
|
750 ch = CHILD(n, i); |
|
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parents:
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diff
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|
751 if (TYPE(ch) == DOUBLESTAR) break; |
|
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|
752 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 753 } |
|
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|
754 posargs = (nposargs ? asdl_seq_new(nposargs, c->c_arena) : NULL); |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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|
755 if (!posargs && nposargs) |
|
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parents:
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|
756 goto error; |
|
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changeset
|
757 kwonlyargs = (nkwonlyargs ? |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
758 asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
759 if (!kwonlyargs && nkwonlyargs) |
|
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parents:
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changeset
|
760 goto error; |
|
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|
761 posdefaults = (nposdefaults ? |
|
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changeset
|
762 asdl_seq_new(nposdefaults, c->c_arena) : NULL); |
|
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|
763 if (!posdefaults && nposdefaults) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
764 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
765 /* 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
|
766 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
|
767 - 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
|
768 kwdefaults = (nkwonlyargs ? |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
769 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
|
770 if (!kwdefaults && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
771 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
772 |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
773 if (nposargs + nkwonlyargs > 255) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
774 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
|
775 return NULL; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
776 } |
| 35742 | 777 |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
778 /* tfpdef: NAME [':' test] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
779 vfpdef: NAME |
| 35742 | 780 */ |
| 781 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
782 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
|
783 k = 0; /* index for args */ |
| 35742 | 784 while (i < NCH(n)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
785 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
786 switch (TYPE(ch)) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
787 case tfpdef: |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
788 case vfpdef: |
| 35742 | 789 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 790 anything other than EQUAL or a comma? */ | |
| 791 /* XXX Should NCH(n) check be made a separate check? */ | |
| 792 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
|
793 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
|
794 if (!expression) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
795 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
796 assert(posdefaults != NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
797 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 798 i += 2; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
799 found_default = 1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
800 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
801 else if (found_default) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
802 ast_error(n, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
803 "non-default argument follows default argument"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
804 goto error; |
| 35742 | 805 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
806 arg = compiler_arg(c, ch); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
807 if (!arg) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
808 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
809 asdl_seq_SET(posargs, k++, arg); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
810 |
| 35742 | 811 i += 2; /* the name and the comma */ |
| 812 break; | |
| 813 case STAR: | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
814 if (i+1 >= NCH(n)) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
815 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
|
816 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
817 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
818 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
|
819 if (TYPE(ch) == COMMA) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
820 int res = 0; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
821 i += 2; /* now follows keyword only arguments */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
822 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
823 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
824 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
825 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
|
826 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
827 else { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
828 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
829 if (NCH(ch) > 1) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
830 /* 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
|
831 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
|
832 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
833 i += 3; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
834 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
|
835 || TYPE(CHILD(n, i)) == vfpdef)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
836 int res = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
837 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
838 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
839 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
840 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
|
841 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
842 } |
| 35742 | 843 break; |
| 844 case DOUBLESTAR: | |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
845 ch = CHILD(n, i+1); /* tfpdef */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
846 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
|
847 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
848 if (NCH(ch) > 1) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
849 /* 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
|
850 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
|
851 } |
| 35742 | 852 i += 3; |
| 853 break; | |
| 854 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
855 PyErr_Format(PyExc_SystemError, |
| 35742 | 856 "unexpected node in varargslist: %d @ %d", |
| 857 TYPE(ch), i); | |
| 858 goto error; | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
859 } |
| 35742 | 860 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
861 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
|
862 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 863 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
|
864 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
|
865 Py_XDECREF(kwarg); |
| 35742 | 866 return NULL; |
| 867 } | |
| 868 | |
| 869 static expr_ty | |
| 870 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 871 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
872 expr_ty e; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
873 identifier id; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
874 int lineno, col_offset; |
| 35742 | 875 int i; |
| 876 | |
| 877 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
|
878 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
879 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
880 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
|
881 |
| 35742 | 882 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 883 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
|
884 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
885 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 886 if (!e) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
887 return NULL; |
| 35742 | 888 |
| 889 for (i = 2; i < NCH(n); i+=2) { | |
| 890 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
|
891 if (!id) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
892 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
893 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
|
894 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
895 return NULL; |
| 35742 | 896 } |
| 897 | |
| 898 return e; | |
| 899 } | |
| 900 | |
| 901 static expr_ty | |
| 902 ast_for_decorator(struct compiling *c, const node *n) | |
| 903 { | |
| 904 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 905 expr_ty d = NULL; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
906 expr_ty name_expr; |
| 35742 | 907 |
| 908 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
909 REQ(CHILD(n, 0), AT); |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
910 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 911 |
| 912 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 913 if (!name_expr) | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
914 return NULL; |
|
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915 |
| 35742 | 916 if (NCH(n) == 3) { /* No arguments */ |
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917 d = name_expr; |
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918 name_expr = NULL; |
| 35742 | 919 } |
| 920 else if (NCH(n) == 5) { /* Call with no arguments */ | |
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921 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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922 n->n_col_offset, c->c_arena); |
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923 if (!d) |
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924 return NULL; |
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925 name_expr = NULL; |
| 35742 | 926 } |
| 927 else { | |
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928 d = ast_for_call(c, CHILD(n, 3), name_expr); |
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929 if (!d) |
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930 return NULL; |
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931 name_expr = NULL; |
| 35742 | 932 } |
| 933 | |
| 934 return d; | |
| 935 } | |
| 936 | |
| 937 static asdl_seq* | |
| 938 ast_for_decorators(struct compiling *c, const node *n) | |
| 939 { | |
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940 asdl_seq* decorator_seq; |
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941 expr_ty d; |
| 35742 | 942 int i; |
| 943 | |
| 944 REQ(n, decorators); | |
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945 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 946 if (!decorator_seq) |
| 947 return NULL; | |
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948 |
| 35742 | 949 for (i = 0; i < NCH(n); i++) { |
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950 d = ast_for_decorator(c, CHILD(n, i)); |
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951 if (!d) |
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952 return NULL; |
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953 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 954 } |
| 955 return decorator_seq; | |
| 956 } | |
| 957 | |
| 958 static stmt_ty | |
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959 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 960 { |
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961 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
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962 identifier name; |
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963 arguments_ty args; |
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964 asdl_seq *body; |
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965 expr_ty returns = NULL; |
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966 int name_i = 1; |
| 35742 | 967 |
| 968 REQ(n, funcdef); | |
| 969 | |
| 970 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 971 if (!name) | |
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972 return NULL; |
| 35742 | 973 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 974 if (!args) | |
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975 return NULL; |
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976 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
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977 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
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978 if (!returns) |
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979 return NULL; |
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980 name_i += 2; |
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981 } |
| 35742 | 982 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 983 if (!body) | |
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984 return NULL; |
| 35742 | 985 |
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986 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
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987 n->n_col_offset, c->c_arena); |
| 35742 | 988 } |
| 989 | |
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990 static stmt_ty |
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991 ast_for_decorated(struct compiling *c, const node *n) |
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992 { |
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993 /* decorated: decorators (classdef | funcdef) */ |
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994 stmt_ty thing = NULL; |
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995 asdl_seq *decorator_seq = NULL; |
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996 |
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997 REQ(n, decorated); |
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998 |
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999 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
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1000 if (!decorator_seq) |
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1001 return NULL; |
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1002 |
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1003 assert(TYPE(CHILD(n, 1)) == funcdef || |
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1004 TYPE(CHILD(n, 1)) == classdef); |
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1005 |
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1006 if (TYPE(CHILD(n, 1)) == funcdef) { |
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1007 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
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1008 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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1009 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
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1010 } |
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1011 return thing; |
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1012 } |
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1013 |
| 35742 | 1014 static expr_ty |
| 1015 ast_for_lambdef(struct compiling *c, const node *n) | |
| 1016 { | |
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1017 /* lambdef: 'lambda' [varargslist] ':' test |
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1018 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1019 arguments_ty args; |
| 1020 expr_ty expression; | |
| 1021 | |
| 1022 if (NCH(n) == 3) { | |
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1023 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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1024 NULL, c->c_arena); |
| 35742 | 1025 if (!args) |
| 1026 return NULL; | |
| 1027 expression = ast_for_expr(c, CHILD(n, 2)); | |
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1028 if (!expression) |
| 35742 | 1029 return NULL; |
| 1030 } | |
| 1031 else { | |
| 1032 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1033 if (!args) | |
| 1034 return NULL; | |
| 1035 expression = ast_for_expr(c, CHILD(n, 3)); | |
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1036 if (!expression) |
| 35742 | 1037 return NULL; |
| 1038 } | |
| 1039 | |
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1040 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1041 } |
| 1042 | |
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1043 static expr_ty |
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1044 ast_for_ifexpr(struct compiling *c, const node *n) |
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1045 { |
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1046 /* test: or_test 'if' or_test 'else' test */ |
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1047 expr_ty expression, body, orelse; |
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1048 |
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1049 assert(NCH(n) == 5); |
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1050 body = ast_for_expr(c, CHILD(n, 0)); |
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1051 if (!body) |
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1052 return NULL; |
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1053 expression = ast_for_expr(c, CHILD(n, 2)); |
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1054 if (!expression) |
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1055 return NULL; |
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1056 orelse = ast_for_expr(c, CHILD(n, 4)); |
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1057 if (!orelse) |
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1058 return NULL; |
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1059 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
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1060 c->c_arena); |
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1061 } |
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1062 |
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1063 /* |
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1064 Count the number of 'for' loops in a comprehension. |
| 35742 | 1065 |
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1066 Helper for ast_for_comprehension(). |
| 35742 | 1067 */ |
| 1068 | |
| 1069 static int | |
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1070 count_comp_fors(const node *n) |
| 35742 | 1071 { |
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1072 int n_fors = 0; |
| 35742 | 1073 |
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1074 count_comp_for: |
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1075 n_fors++; |
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1076 REQ(n, comp_for); |
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1077 if (NCH(n) == 5) |
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1078 n = CHILD(n, 4); |
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1079 else |
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1080 return n_fors; |
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1081 count_comp_iter: |
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1082 REQ(n, comp_iter); |
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1083 n = CHILD(n, 0); |
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1084 if (TYPE(n) == comp_for) |
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1085 goto count_comp_for; |
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1086 else if (TYPE(n) == comp_if) { |
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1087 if (NCH(n) == 3) { |
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1088 n = CHILD(n, 2); |
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1089 goto count_comp_iter; |
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1090 } |
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1091 else |
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1092 return n_fors; |
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1093 } |
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1094 |
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1095 /* Should never be reached */ |
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1096 PyErr_SetString(PyExc_SystemError, |
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1097 "logic error in count_comp_fors"); |
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1098 return -1; |
| 35742 | 1099 } |
| 1100 | |
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1101 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1102 |
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1103 Helper for ast_for_comprehension(). |
| 35742 | 1104 */ |
| 1105 | |
| 1106 static int | |
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1107 count_comp_ifs(const node *n) |
| 35742 | 1108 { |
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1109 int n_ifs = 0; |
| 35742 | 1110 |
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1111 while (1) { |
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1112 REQ(n, comp_iter); |
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1113 if (TYPE(CHILD(n, 0)) == comp_for) |
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1114 return n_ifs; |
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1115 n = CHILD(n, 0); |
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1116 REQ(n, comp_if); |
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1117 n_ifs++; |
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1118 if (NCH(n) == 2) |
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1119 return n_ifs; |
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1120 n = CHILD(n, 2); |
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1121 } |
| 35742 | 1122 } |
| 1123 | |
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1124 static asdl_seq * |
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1125 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1126 { |
| 1127 int i, n_fors; | |
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1128 asdl_seq *comps; |
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1129 |
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1130 n_fors = count_comp_fors(n); |
| 35742 | 1131 if (n_fors == -1) |
| 1132 return NULL; | |
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1133 |
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1134 comps = asdl_seq_new(n_fors, c->c_arena); |
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1135 if (!comps) |
| 35742 | 1136 return NULL; |
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1137 |
| 35742 | 1138 for (i = 0; i < n_fors; i++) { |
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1139 comprehension_ty comp; |
| 35742 | 1140 asdl_seq *t; |
| 1141 expr_ty expression; | |
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1142 node *for_ch; |
| 35742 | 1143 |
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1144 REQ(n, comp_for); |
| 35742 | 1145 |
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1146 for_ch = CHILD(n, 1); |
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1147 t = ast_for_exprlist(c, for_ch, Store); |
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1148 if (!t) |
| 35742 | 1149 return NULL; |
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1150 expression = ast_for_expr(c, CHILD(n, 3)); |
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1151 if (!expression) |
| 35742 | 1152 return NULL; |
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1153 |
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1154 /* Check the # of children rather than the length of t, since |
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1155 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
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1156 if (NCH(for_ch) == 1) |
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1157 comp = comprehension((expr_ty)asdl_seq_GET(t, 0), expression, |
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1158 NULL, c->c_arena); |
| 35742 | 1159 else |
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1160 comp = comprehension(Tuple(t, Store, LINENO(n), n->n_col_offset, |
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1161 c->c_arena), |
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1162 expression, NULL, c->c_arena); |
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1163 |
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1164 if (!comp) |
| 35742 | 1165 return NULL; |
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1166 |
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1167 if (NCH(n) == 5) { |
| 35742 | 1168 int j, n_ifs; |
| 1169 asdl_seq *ifs; | |
| 1170 | |
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1171 n = CHILD(n, 4); |
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1172 n_ifs = count_comp_ifs(n); |
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1173 if (n_ifs == -1) |
| 35742 | 1174 return NULL; |
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1175 |
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1176 ifs = asdl_seq_new(n_ifs, c->c_arena); |
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1177 if (!ifs) |
| 35742 | 1178 return NULL; |
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1179 |
| 35742 | 1180 for (j = 0; j < n_ifs; j++) { |
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1181 REQ(n, comp_iter); |
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1182 n = CHILD(n, 0); |
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1183 REQ(n, comp_if); |
| 35742 | 1184 |
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1185 expression = ast_for_expr(c, CHILD(n, 1)); |
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1186 if (!expression) |
|
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1187 return NULL; |
|
36718
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1188 asdl_seq_SET(ifs, j, expression); |
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1189 if (NCH(n) == 3) |
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1190 n = CHILD(n, 2); |
| 35742 | 1191 } |
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1192 /* on exit, must guarantee that n is a comp_for */ |
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1193 if (TYPE(n) == comp_iter) |
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1194 n = CHILD(n, 0); |
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1195 comp->ifs = ifs; |
| 35742 | 1196 } |
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1197 asdl_seq_SET(comps, i, comp); |
| 35742 | 1198 } |
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1199 return comps; |
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1200 } |
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1201 |
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1202 static expr_ty |
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1203 ast_for_itercomp(struct compiling *c, const node *n, int type) |
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1204 { |
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1205 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1206 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1207 expr_ty elt; |
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1208 asdl_seq *comps; |
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1209 |
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1210 assert(NCH(n) > 1); |
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1211 |
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1212 elt = ast_for_expr(c, CHILD(n, 0)); |
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1213 if (!elt) |
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1214 return NULL; |
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1215 |
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1216 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1217 if (!comps) |
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1218 return NULL; |
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1219 |
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1220 if (type == COMP_GENEXP) |
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1221 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1222 else if (type == COMP_LISTCOMP) |
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1223 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1224 else if (type == COMP_SETCOMP) |
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1225 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1226 else |
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1227 /* Should never happen */ |
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1228 return NULL; |
| 35742 | 1229 } |
| 1230 | |
| 1231 static expr_ty | |
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1232 ast_for_dictcomp(struct compiling *c, const node *n) |
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1233 { |
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1234 expr_ty key, value; |
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1235 asdl_seq *comps; |
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1236 |
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1237 assert(NCH(n) > 3); |
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1238 REQ(CHILD(n, 1), COLON); |
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1239 |
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1240 key = ast_for_expr(c, CHILD(n, 0)); |
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1241 if (!key) |
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1242 return NULL; |
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1243 |
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1244 value = ast_for_expr(c, CHILD(n, 2)); |
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1245 if (!value) |
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1246 return NULL; |
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1247 |
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1248 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1249 if (!comps) |
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1250 return NULL; |
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1251 |
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1252 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1253 } |
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1254 |
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1255 static expr_ty |
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1256 ast_for_genexp(struct compiling *c, const node *n) |
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1257 { |
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1258 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1259 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1260 } |
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1261 |
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1262 static expr_ty |
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1263 ast_for_listcomp(struct compiling *c, const node *n) |
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1264 { |
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1265 assert(TYPE(n) == (testlist_comp)); |
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1266 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1267 } |
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1268 |
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1269 static expr_ty |
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1270 ast_for_setcomp(struct compiling *c, const node *n) |
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1271 { |
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1272 assert(TYPE(n) == (dictorsetmaker)); |
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1273 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1274 } |
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1275 |
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1276 |
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1277 static expr_ty |
| 35742 | 1278 ast_for_atom(struct compiling *c, const node *n) |
| 1279 { | |
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1280 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1281 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
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1282 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1283 */ |
| 1284 node *ch = CHILD(n, 0); | |
| 40894 | 1285 int bytesmode = 0; |
| 35742 | 1286 |
| 1287 switch (TYPE(ch)) { | |
| 1288 case NAME: | |
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1289 /* All names start in Load context, but may later be |
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1290 changed. */ |
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1291 return Name(NEW_IDENTIFIER(ch), Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1292 case STRING: { |
| 40894 | 1293 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1294 if (!str) { |
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1295 if (PyErr_ExceptionMatches(PyExc_UnicodeError)) { |
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1296 PyObject *type, *value, *tback, *errstr; |
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1297 PyErr_Fetch(&type, &value, &tback); |
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1298 errstr = ((PyUnicodeErrorObject *)value)->reason; |
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1299 if (errstr) { |
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1300 char *s = ""; |
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1301 char buf[128]; |
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1302 s = PyUnicode_AsString(errstr); |
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1303 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
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1304 ast_error(n, buf); |
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1305 } else { |
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1306 ast_error(n, "(unicode error) unknown error"); |
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1307 } |
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1308 Py_DECREF(type); |
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1309 Py_DECREF(value); |
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1310 Py_XDECREF(tback); |
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1311 } |
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1312 return NULL; |
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1313 } |
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1314 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1315 if (bytesmode) |
| 1316 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1317 else | |
| 1318 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1319 } |
| 1320 case NUMBER: { | |
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1321 PyObject *pynum = parsenumber(STR(ch)); |
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1322 if (!pynum) |
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1323 return NULL; |
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1324 |
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1325 PyArena_AddPyObject(c->c_arena, pynum); |
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1326 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1327 } |
|
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1328 case ELLIPSIS: /* Ellipsis */ |
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1329 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1330 case LPAR: /* some parenthesized expressions */ |
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1331 ch = CHILD(n, 1); |
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1332 |
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1333 if (TYPE(ch) == RPAR) |
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1334 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1335 |
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1336 if (TYPE(ch) == yield_expr) |
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1337 return ast_for_expr(c, ch); |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1338 |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1339 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1340 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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|
1341 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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|
1342 |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1343 return ast_for_testlist(c, ch); |
| 35742 | 1344 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:
40215
diff
changeset
|
1345 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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|
1346 |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
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|
1347 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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|
1348 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
changeset
|
1349 |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1350 REQ(ch, testlist_comp); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
1351 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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|
1352 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
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|
1353 if (!elts) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1354 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
|
1355 |
|
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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|
1356 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
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|
1357 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1358 else |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1359 return ast_for_listcomp(c, ch); |
| 35742 | 1360 case LBRACE: { |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1361 /* 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
changeset
|
1362 * test (gen_for | (',' test)* [',']) */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1363 int i, size; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1364 asdl_seq *keys, *values; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1365 |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
1366 ch = CHILD(n, 1); |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1367 if (TYPE(ch) == RBRACE) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1368 /* it's an empty dict */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1369 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1370 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1371 /* it's a simple set */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
parents:
41464
diff
changeset
|
1372 asdl_seq *elts; |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1373 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
parents:
41464
diff
changeset
|
1374 elts = asdl_seq_new(size, c->c_arena); |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1375 if (!elts) |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1376 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1377 for (i = 0; i < NCH(ch); i += 2) { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1378 expr_ty expression; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1379 expression = ast_for_expr(c, CHILD(ch, i)); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1380 if (!expression) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1381 return NULL; |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1382 asdl_seq_SET(elts, i / 2, expression); |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1383 } |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1384 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
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diff
changeset
|
1385 } 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
|
1386 /* it's a set comprehension */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1387 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
|
1388 } 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
|
1389 return ast_for_dictcomp(c, ch); |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1390 } else { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1391 /* it's a dict */ |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1392 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1393 keys = asdl_seq_new(size, c->c_arena); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1394 if (!keys) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1395 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1396 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1397 values = 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
|
1398 if (!values) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1399 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1400 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1401 for (i = 0; i < NCH(ch); i += 4) { |
|
d0b83c4630c0
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1402 expr_ty 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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|
1403 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1404 expression = ast_for_expr(c, CHILD(ch, i)); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1405 if (!expression) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1406 return NULL; |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1407 |
|
39693
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SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1408 asdl_seq_SET(keys, i / 4, expression); |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
1409 |
|
39693
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parents:
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diff
changeset
|
1410 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
d0b83c4630c0
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parents:
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changeset
|
1411 if (!expression) |
|
d0b83c4630c0
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parents:
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diff
changeset
|
1412 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
changeset
|
1413 |
|
d0b83c4630c0
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parents:
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diff
changeset
|
1414 asdl_seq_SET(values, i / 4, expression); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
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|
1415 } |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
changeset
|
1416 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
d0b83c4630c0
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parents:
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diff
changeset
|
1417 } |
| 35742 | 1418 } |
| 1419 default: | |
|
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|
1420 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
cc992d75d5b3
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parents:
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|
1421 return NULL; |
| 35742 | 1422 } |
| 1423 } | |
| 1424 | |
| 1425 static slice_ty | |
| 1426 ast_for_slice(struct compiling *c, const node *n) | |
| 1427 { | |
| 1428 node *ch; | |
| 1429 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1430 | |
| 1431 REQ(n, subscript); | |
| 1432 | |
| 1433 /* | |
|
39783
7a0ad110e91e
Patch #1550786: ellipsis literal.
Georg Brandl <georg@python.org>
parents:
39782
diff
changeset
|
1434 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1435 sliceop: ':' [test] |
| 1436 */ | |
| 1437 ch = CHILD(n, 0); | |
| 1438 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1439 /* 'step' variable hold no significance in terms of being used over | |
| 1440 other vars */ | |
| 1441 step = ast_for_expr(c, ch); | |
| 1442 if (!step) | |
| 1443 return NULL; | |
| 1444 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
1445 return Index(step, c->c_arena); |
| 35742 | 1446 } |
| 1447 | |
| 1448 if (TYPE(ch) == test) { | |
|
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Thomas Wouters <thomas@python.org>
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|
1449 lower = ast_for_expr(c, ch); |
| 35742 | 1450 if (!lower) |
| 1451 return NULL; | |
| 1452 } | |
| 1453 | |
| 1454 /* If there's an upper bound it's in the second or third position. */ | |
| 1455 if (TYPE(ch) == COLON) { | |
|
40450
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40215
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|
1456 if (NCH(n) > 1) { |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
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40215
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changeset
|
1457 node *n2 = CHILD(n, 1); |
| 35742 | 1458 |
|
40450
cc992d75d5b3
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|
1459 if (TYPE(n2) == test) { |
|
cc992d75d5b3
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40215
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changeset
|
1460 upper = ast_for_expr(c, n2); |
| 35742 | 1461 if (!upper) |
| 1462 return NULL; | |
| 1463 } | |
|
40450
cc992d75d5b3
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|
1464 } |
| 35742 | 1465 } else if (NCH(n) > 2) { |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
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changeset
|
1466 node *n2 = CHILD(n, 2); |
| 35742 | 1467 |
|
40450
cc992d75d5b3
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changeset
|
1468 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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40215
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changeset
|
1469 upper = ast_for_expr(c, n2); |
| 35742 | 1470 if (!upper) |
| 1471 return NULL; | |
| 1472 } | |
| 1473 } | |
| 1474 | |
| 1475 ch = CHILD(n, NCH(n) - 1); | |
| 1476 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
|
1477 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
|
1478 /* 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
|
1479 ch = CHILD(ch, 0); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1480 step = Name(new_identifier("None", c->c_arena), Load, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1481 LINENO(ch), ch->n_col_offset, c->c_arena); |
| 35742 | 1482 if (!step) |
| 1483 return NULL; | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1484 } else { |
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1485 ch = CHILD(ch, 1); |
|
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|
1486 if (TYPE(ch) == test) { |
|
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|
1487 step = ast_for_expr(c, ch); |
|
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|
1488 if (!step) |
|
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|
1489 return NULL; |
|
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|
1490 } |
| 35742 | 1491 } |
| 1492 } | |
| 1493 | |
|
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|
1494 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1495 } |
| 1496 | |
| 1497 static expr_ty | |
| 1498 ast_for_binop(struct compiling *c, const node *n) | |
| 1499 { | |
|
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|
1500 /* Must account for a sequence of expressions. |
|
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|
1501 How should A op B op C by represented? |
|
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|
1502 BinOp(BinOp(A, op, B), op, C). |
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|
1503 */ |
| 35742 | 1504 |
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|
1505 int i, nops; |
|
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|
1506 expr_ty expr1, expr2, result; |
|
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|
1507 operator_ty newoperator; |
|
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1508 |
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1509 expr1 = ast_for_expr(c, CHILD(n, 0)); |
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|
1510 if (!expr1) |
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|
1511 return NULL; |
| 35742 | 1512 |
|
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|
1513 expr2 = ast_for_expr(c, CHILD(n, 2)); |
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|
1514 if (!expr2) |
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|
1515 return NULL; |
|
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|
1516 |
|
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|
1517 newoperator = get_operator(CHILD(n, 1)); |
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|
1518 if (!newoperator) |
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1519 return NULL; |
| 35742 | 1520 |
|
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1521 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
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1522 c->c_arena); |
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1523 if (!result) |
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1524 return NULL; |
| 35742 | 1525 |
|
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|
1526 nops = (NCH(n) - 1) / 2; |
|
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|
1527 for (i = 1; i < nops; i++) { |
|
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|
1528 expr_ty tmp_result, tmp; |
|
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|
1529 const node* next_oper = CHILD(n, i * 2 + 1); |
|
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|
1530 |
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|
1531 newoperator = get_operator(next_oper); |
|
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|
1532 if (!newoperator) |
| 35742 | 1533 return NULL; |
| 1534 | |
|
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|
1535 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
|
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|
1536 if (!tmp) |
| 35742 | 1537 return NULL; |
| 1538 | |
|
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|
1539 tmp_result = BinOp(result, newoperator, tmp, |
|
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|
1540 LINENO(next_oper), next_oper->n_col_offset, |
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|
1541 c->c_arena); |
|
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|
1542 if (!tmp_result) |
|
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1543 return NULL; |
|
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|
1544 result = tmp_result; |
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1545 } |
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1546 return result; |
| 35742 | 1547 } |
| 1548 | |
|
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|
1549 static expr_ty |
|
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|
1550 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
|
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1551 { |
|
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|
1552 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
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|
1553 subscriptlist: subscript (',' subscript)* [','] |
|
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|
1554 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
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1555 */ |
|
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Refactor code for translating "power" nodes.
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|
1556 REQ(n, trailer); |
|
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|
1557 if (TYPE(CHILD(n, 0)) == LPAR) { |
|
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Refactor code for translating "power" nodes.
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|
1558 if (NCH(n) == 2) |
|
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|
1559 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
f731859e9b3b
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|
1560 n->n_col_offset, c->c_arena); |
|
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|
1561 else |
|
36679
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1562 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
35799
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|
1563 } |
|
36679
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|
1564 else if (TYPE(CHILD(n, 0)) == DOT ) { |
|
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|
1565 return Attribute(left_expr, NEW_IDENTIFIER(CHILD(n, 1)), Load, |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
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diff
changeset
|
1566 LINENO(n), n->n_col_offset, c->c_arena); |
|
36679
e1391910b026
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|
1567 } |
|
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|
1568 else { |
|
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|
1569 REQ(CHILD(n, 0), LSQB); |
|
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|
1570 REQ(CHILD(n, 2), RSQB); |
|
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|
1571 n = CHILD(n, 1); |
|
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|
1572 if (NCH(n) == 1) { |
|
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|
1573 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
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|
1574 if (!slc) |
|
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|
1575 return NULL; |
|
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|
1576 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
|
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|
1577 c->c_arena); |
|
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|
1578 } |
|
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|
1579 else { |
|
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|
1580 /* The grammar is ambiguous here. The ambiguity is resolved |
|
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|
1581 by treating the sequence as a tuple literal if there are |
|
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|
1582 no slice features. |
|
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|
1583 */ |
|
35799
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changeset
|
1584 int j; |
|
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changeset
|
1585 slice_ty slc; |
|
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changeset
|
1586 expr_ty e; |
|
40941
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Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
1587 int simple = 1; |
|
36686
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diff
changeset
|
1588 asdl_seq *slices, *elts; |
|
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|
1589 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
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|
1590 if (!slices) |
|
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|
1591 return NULL; |
|
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changeset
|
1592 for (j = 0; j < NCH(n); j += 2) { |
|
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changeset
|
1593 slc = ast_for_slice(c, CHILD(n, j)); |
|
36065
ea083efdc96c
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|
1594 if (!slc) |
|
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|
1595 return NULL; |
|
36686
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diff
changeset
|
1596 if (slc->kind != Index_kind) |
|
40941
2ca14d6a369b
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Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
1597 simple = 0; |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
changeset
|
1598 asdl_seq_SET(slices, j / 2, slc); |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
changeset
|
1599 } |
|
36686
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Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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changeset
|
1600 if (!simple) { |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1601 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1602 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
36686
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Fix parsing of subscriptlist.
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diff
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|
1603 } |
|
8611f39cd82b
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36682
diff
changeset
|
1604 /* extract Index values and put them in a Tuple */ |
|
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Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1605 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
36877
e9a7a2784e17
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Hye-Shik Chang <hyeshik@gmail.com>
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diff
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|
1606 if (!elts) |
|
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Hye-Shik Chang <hyeshik@gmail.com>
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diff
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|
1607 return NULL; |
|
36686
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Fix parsing of subscriptlist.
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diff
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|
1608 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
8611f39cd82b
Fix parsing of subscriptlist.
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diff
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|
1609 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
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Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
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diff
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|
1610 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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diff
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|
1611 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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diff
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|
1612 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
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36780
diff
changeset
|
1613 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
36686
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Fix parsing of subscriptlist.
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parents:
36682
diff
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|
1614 if (!e) |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
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|
1615 return NULL; |
|
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Fix parsing of subscriptlist.
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parents:
36682
diff
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|
1616 return Subscript(left_expr, Index(e, c->c_arena), |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
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|
1617 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
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|
1618 } |
|
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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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|
1619 } |
|
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Refactor code for translating "power" nodes.
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|
1620 } |
|
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
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|
1621 |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
1622 static expr_ty |
|
39442
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|
1623 ast_for_factor(struct compiling *c, const node *n) |
|
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|
1624 { |
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|
1625 node *pfactor, *ppower, *patom, *pnum; |
|
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|
1626 expr_ty expression; |
|
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|
1627 |
|
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|
1628 /* If the unary - operator is applied to a constant, don't generate |
|
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|
1629 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
|
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|
1630 constant. The peephole optimizer already does something like |
|
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|
1631 this but it doesn't handle the case where the constant is |
|
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|
1632 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
|
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|
1633 PyLongObject. |
|
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|
1634 */ |
|
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|
1635 if (TYPE(CHILD(n, 0)) == MINUS |
|
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|
1636 && NCH(n) == 2 |
|
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|
1637 && TYPE((pfactor = CHILD(n, 1))) == factor |
|
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|
1638 && NCH(pfactor) == 1 |
|
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|
1639 && TYPE((ppower = CHILD(pfactor, 0))) == power |
|
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|
1640 && NCH(ppower) == 1 |
|
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|
1641 && TYPE((patom = CHILD(ppower, 0))) == atom |
|
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|
1642 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
|
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|
1643 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
|
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|
1644 if (s == NULL) |
|
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|
1645 return NULL; |
|
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|
1646 s[0] = '-'; |
|
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|
1647 strcpy(s + 1, STR(pnum)); |
|
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|
1648 PyObject_FREE(STR(pnum)); |
|
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|
1649 STR(pnum) = s; |
|
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|
1650 return ast_for_atom(c, patom); |
|
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|
1651 } |
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1652 |
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|
1653 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
1654 if (!expression) |
|
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|
1655 return NULL; |
|
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|
1656 |
|
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|
1657 switch (TYPE(CHILD(n, 0))) { |
|
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|
1658 case PLUS: |
|
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|
1659 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
|
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|
1660 c->c_arena); |
|
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|
1661 case MINUS: |
|
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|
1662 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
|
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|
1663 c->c_arena); |
|
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|
1664 case TILDE: |
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|
1665 return UnaryOp(Invert, expression, LINENO(n), |
|
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|
1666 n->n_col_offset, c->c_arena); |
|
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|
1667 } |
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|
1668 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
|
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|
1669 TYPE(CHILD(n, 0))); |
|
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|
1670 return NULL; |
|
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|
1671 } |
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|
1672 |
|
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|
1673 static expr_ty |
|
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842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1674 ast_for_power(struct compiling *c, const node *n) |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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|
1675 { |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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diff
changeset
|
1676 /* power: atom trailer* ('**' factor)* |
|
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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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|
1677 */ |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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|
1678 int i; |
|
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Refactor code for translating "power" nodes.
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parents:
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diff
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|
1679 expr_ty 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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|
1680 REQ(n, power); |
|
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Refactor code for translating "power" nodes.
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|
1681 e = ast_for_atom(c, CHILD(n, 0)); |
|
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Refactor code for translating "power" nodes.
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|
1682 if (!e) |
|
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parents:
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|
1683 return NULL; |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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|
1684 if (NCH(n) == 1) |
|
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Refactor code for translating "power" nodes.
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parents:
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|
1685 return e; |
|
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Refactor code for translating "power" nodes.
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|
1686 for (i = 1; i < NCH(n); i++) { |
|
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Refactor code for translating "power" nodes.
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|
1687 node *ch = CHILD(n, i); |
|
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Refactor code for translating "power" nodes.
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|
1688 if (TYPE(ch) != trailer) |
|
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Refactor code for translating "power" nodes.
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|
1689 break; |
|
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Refactor code for translating "power" nodes.
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|
1690 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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changeset
|
1691 if (!tmp) |
|
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|
1692 return NULL; |
|
40450
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|
1693 tmp->lineno = e->lineno; |
|
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|
1694 tmp->col_offset = e->col_offset; |
|
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|
1695 e = tmp; |
|
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|
1696 } |
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|
1697 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
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|
1698 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
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changeset
|
1699 if (!f) |
|
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|
1700 return NULL; |
|
36786
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Martin v. Löwis <martin@v.loewis.de>
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changeset
|
1701 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
36065
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|
1702 if (!tmp) |
|
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|
1703 return NULL; |
|
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|
1704 e = tmp; |
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|
1705 } |
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|
1706 return e; |
|
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|
1707 } |
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|
1708 |
|
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|
1709 static expr_ty |
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1710 ast_for_starred(struct compiling *c, const node *n) |
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1711 { |
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1712 expr_ty tmp; |
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1713 REQ(n, star_expr); |
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1714 |
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1715 tmp = ast_for_expr(c, CHILD(n, 1)); |
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1716 if (!tmp) |
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1717 return NULL; |
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1718 |
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1719 /* The Load context is changed later. */ |
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1720 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1721 } |
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1722 |
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|
1723 |
| 35742 | 1724 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1725 */ | |
| 1726 | |
| 1727 static expr_ty | |
| 1728 ast_for_expr(struct compiling *c, const node *n) | |
| 1729 { | |
| 1730 /* handle the full range of simple expressions | |
|
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1731 test: or_test ['if' or_test 'else' test] | lambdef |
|
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1732 test_nocond: or_test | lambdef_nocond |
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1733 or_test: and_test ('or' and_test)* |
| 35742 | 1734 and_test: not_test ('and' not_test)* |
| 1735 not_test: 'not' not_test | comparison | |
| 1736 comparison: expr (comp_op expr)* | |
| 1737 expr: xor_expr ('|' xor_expr)* | |
| 1738 xor_expr: and_expr ('^' and_expr)* | |
| 1739 and_expr: shift_expr ('&' shift_expr)* | |
| 1740 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1741 arith_expr: term (('+'|'-') term)* | |
| 1742 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1743 factor: ('+'|'-'|'~') factor | power | |
| 1744 power: atom trailer* ('**' factor)* | |
| 1745 */ | |
| 1746 | |
| 1747 asdl_seq *seq; | |
| 1748 int i; | |
| 1749 | |
| 1750 loop: | |
| 1751 switch (TYPE(n)) { | |
| 1752 case test: | |
|
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1753 case test_nocond: |
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1754 if (TYPE(CHILD(n, 0)) == lambdef || |
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1755 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1756 return ast_for_lambdef(c, CHILD(n, 0)); |
|
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1757 else if (NCH(n) > 1) |
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1758 return ast_for_ifexpr(c, n); |
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1759 /* Fallthrough */ |
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1760 case or_test: |
| 35742 | 1761 case and_test: |
| 1762 if (NCH(n) == 1) { | |
| 1763 n = CHILD(n, 0); | |
| 1764 goto loop; | |
| 1765 } | |
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1766 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1767 if (!seq) |
| 1768 return NULL; | |
| 1769 for (i = 0; i < NCH(n); i += 2) { | |
| 1770 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1771 if (!e) | |
| 1772 return NULL; | |
| 1773 asdl_seq_SET(seq, i / 2, e); | |
| 1774 } | |
| 1775 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
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1776 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
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1777 c->c_arena); |
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1778 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
|
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1779 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1780 case not_test: |
| 1781 if (NCH(n) == 1) { | |
| 1782 n = CHILD(n, 0); | |
| 1783 goto loop; | |
| 1784 } | |
| 1785 else { | |
| 1786 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1787 if (!expression) | |
| 1788 return NULL; | |
| 1789 | |
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1790 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
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1791 c->c_arena); |
| 35742 | 1792 } |
| 1793 case comparison: | |
| 1794 if (NCH(n) == 1) { | |
| 1795 n = CHILD(n, 0); | |
| 1796 goto loop; | |
| 1797 } | |
| 1798 else { | |
| 1799 expr_ty expression; | |
|
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1800 asdl_int_seq *ops; |
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1801 asdl_seq *cmps; |
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1802 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1803 if (!ops) |
| 1804 return NULL; | |
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1805 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1806 if (!cmps) { |
| 1807 return NULL; | |
| 1808 } | |
| 1809 for (i = 1; i < NCH(n); i += 2) { | |
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1810 cmpop_ty newoperator; |
| 35742 | 1811 |
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1812 newoperator = ast_for_comp_op(CHILD(n, i)); |
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1813 if (!newoperator) { |
| 35742 | 1814 return NULL; |
|
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1815 } |
| 35742 | 1816 |
| 1817 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
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1818 if (!expression) { |
| 35742 | 1819 return NULL; |
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1820 } |
| 35742 | 1821 |
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1822 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1823 asdl_seq_SET(cmps, i / 2, expression); |
| 1824 } | |
| 1825 expression = ast_for_expr(c, CHILD(n, 0)); | |
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1826 if (!expression) { |
| 35742 | 1827 return NULL; |
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1828 } |
| 35742 | 1829 |
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1830 return Compare(expression, ops, cmps, LINENO(n), |
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1831 n->n_col_offset, c->c_arena); |
| 35742 | 1832 } |
| 1833 break; | |
| 1834 | |
|
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1835 case star_expr: |
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1836 if (TYPE(CHILD(n, 0)) == STAR) { |
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1837 return ast_for_starred(c, n); |
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1838 } |
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1839 /* Fallthrough */ |
| 35742 | 1840 /* The next five cases all handle BinOps. The main body of code |
| 1841 is the same in each case, but the switch turned inside out to | |
| 1842 reuse the code for each type of operator. | |
| 1843 */ | |
| 1844 case expr: | |
| 1845 case xor_expr: | |
| 1846 case and_expr: | |
| 1847 case shift_expr: | |
| 1848 case arith_expr: | |
| 1849 case term: | |
| 1850 if (NCH(n) == 1) { | |
| 1851 n = CHILD(n, 0); | |
| 1852 goto loop; | |
| 1853 } | |
| 1854 return ast_for_binop(c, n); | |
| 1855 case yield_expr: { | |
|
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1856 expr_ty exp = NULL; |
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1857 if (NCH(n) == 2) { |
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1858 exp = ast_for_testlist(c, CHILD(n, 1)); |
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1859 if (!exp) |
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1860 return NULL; |
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1861 } |
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1862 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
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1863 } |
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1864 case factor: |
| 35742 | 1865 if (NCH(n) == 1) { |
| 1866 n = CHILD(n, 0); | |
| 1867 goto loop; | |
| 1868 } | |
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1869 return ast_for_factor(c, n); |
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1870 case power: |
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1871 return ast_for_power(c, n); |
| 35742 | 1872 default: |
|
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1873 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1874 return NULL; |
| 1875 } | |
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1876 /* should never get here unless if error is set */ |
| 35742 | 1877 return NULL; |
| 1878 } | |
| 1879 | |
| 1880 static expr_ty | |
| 1881 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1882 { | |
| 1883 /* | |
| 1884 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1885 | '**' test) | |
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1886 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1887 */ |
| 1888 | |
| 1889 int i, nargs, nkeywords, ngens; | |
|
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1890 asdl_seq *args; |
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1891 asdl_seq *keywords; |
| 35742 | 1892 expr_ty vararg = NULL, kwarg = NULL; |
| 1893 | |
| 1894 REQ(n, arglist); | |
| 1895 | |
| 1896 nargs = 0; | |
| 1897 nkeywords = 0; | |
| 1898 ngens = 0; | |
| 1899 for (i = 0; i < NCH(n); i++) { | |
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1900 node *ch = CHILD(n, i); |
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1901 if (TYPE(ch) == argument) { |
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1902 if (NCH(ch) == 1) |
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1903 nargs++; |
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1904 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1905 ngens++; |
| 35742 | 1906 else |
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1907 nkeywords++; |
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1908 } |
| 35742 | 1909 } |
| 1910 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
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1911 ast_error(n, "Generator expression must be parenthesized " |
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1912 "if not sole argument"); |
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1913 return NULL; |
| 35742 | 1914 } |
| 1915 | |
| 1916 if (nargs + nkeywords + ngens > 255) { | |
| 1917 ast_error(n, "more than 255 arguments"); | |
| 1918 return NULL; | |
| 1919 } | |
| 1920 | |
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1921 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1922 if (!args) |
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1923 return NULL; |
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1924 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1925 if (!keywords) |
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1926 return NULL; |
| 35742 | 1927 nargs = 0; |
| 1928 nkeywords = 0; | |
| 1929 for (i = 0; i < NCH(n); i++) { | |
|
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1930 node *ch = CHILD(n, i); |
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1931 if (TYPE(ch) == argument) { |
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1932 expr_ty e; |
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1933 if (NCH(ch) == 1) { |
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1934 if (nkeywords) { |
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1935 ast_error(CHILD(ch, 0), |
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1936 "non-keyword arg after keyword arg"); |
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1937 return NULL; |
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1938 } |
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1939 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1940 if (!e) |
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1941 return NULL; |
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1942 asdl_seq_SET(args, nargs++, e); |
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1943 } |
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1944 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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1945 e = ast_for_genexp(c, ch); |
| 35742 | 1946 if (!e) |
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1947 return NULL; |
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1948 asdl_seq_SET(args, nargs++, e); |
| 35742 | 1949 } |
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1950 else { |
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1951 keyword_ty kw; |
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1952 identifier key; |
| 35742 | 1953 |
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1954 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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1955 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1956 if (!e) |
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1957 return NULL; |
| 35742 | 1958 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1959 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 1960 * SF bug 132313 points out that complaining about a keyword | |
| 1961 * then is very confusing. | |
| 1962 */ | |
| 1963 if (e->kind == Lambda_kind) { | |
| 1964 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
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1965 return NULL; |
| 35742 | 1966 } else if (e->kind != Name_kind) { |
| 1967 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
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1968 return NULL; |
|
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1969 } else if (forbidden_name(e, ch)) { |
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1970 return NULL; |
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1971 } |
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1972 key = e->v.Name.id; |
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1973 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 1974 if (!e) |
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1975 return NULL; |
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1976 kw = keyword(key, e, c->c_arena); |
| 35742 | 1977 if (!kw) |
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1978 return NULL; |
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1979 asdl_seq_SET(keywords, nkeywords++, kw); |
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1980 } |
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1981 } |
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1982 else if (TYPE(ch) == STAR) { |
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1983 vararg = ast_for_expr(c, CHILD(n, i+1)); |
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1984 i++; |
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1985 } |
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1986 else if (TYPE(ch) == DOUBLESTAR) { |
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1987 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
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1988 i++; |
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1989 } |
| 35742 | 1990 } |
| 1991 | |
|
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1992 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 1993 } |
| 1994 | |
| 1995 static expr_ty | |
|
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1996 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 1997 { |
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1998 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
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1999 /* testlist: test (',' test)* [','] */ |
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2000 /* testlist1: test (',' test)* */ |
| 35742 | 2001 assert(NCH(n) > 0); |
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2002 if (TYPE(n) == testlist_comp) { |
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2003 if (NCH(n) > 1) |
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2004 assert(TYPE(CHILD(n, 1)) != comp_for); |
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2005 } |
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2006 else { |
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2007 assert(TYPE(n) == testlist || |
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2008 TYPE(n) == testlist1); |
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2009 } |
| 35742 | 2010 if (NCH(n) == 1) |
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2011 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 2012 else { |
| 2013 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 2014 if (!tmp) | |
| 2015 return NULL; | |
|
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2016 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2017 } |
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2018 } |
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2019 |
| 35742 | 2020 static stmt_ty |
| 2021 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2022 { | |
| 2023 REQ(n, expr_stmt); | |
| 2024 /* expr_stmt: testlist (augassign (yield_expr|testlist) | |
| 2025 | ('=' (yield_expr|testlist))*) | |
| 2026 testlist: test (',' test)* [','] | |
| 2027 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | |
|
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2028 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2029 test: ... here starts the operator precendence dance |
| 2030 */ | |
| 2031 | |
| 2032 if (NCH(n) == 1) { | |
|
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2033 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2034 if (!e) |
| 2035 return NULL; | |
| 2036 | |
|
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2037 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2038 } |
| 2039 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2040 expr_ty expr1, expr2; | |
|
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|
2041 operator_ty newoperator; |
|
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2042 node *ch = CHILD(n, 0); |
| 35742 | 2043 |
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2044 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2045 if (!expr1) |
| 2046 return NULL; | |
|
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2047 /* TODO(nas): Remove duplicated error checks (set_context does it) */ |
|
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2048 switch (expr1->kind) { |
|
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2049 case GeneratorExp_kind: |
|
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|
2050 ast_error(ch, "augmented assignment to generator " |
|
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2051 "expression not possible"); |
|
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|
2052 return NULL; |
|
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2053 case Yield_kind: |
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2054 ast_error(ch, "augmented assignment to yield " |
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2055 "expression not possible"); |
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2056 return NULL; |
|
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2057 case Name_kind: { |
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2058 if (forbidden_name(expr1, ch)) |
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2059 return NULL; |
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2060 break; |
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2061 } |
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2062 case Attribute_kind: |
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2063 case Subscript_kind: |
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2064 break; |
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2065 default: |
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2066 ast_error(ch, "illegal expression for augmented " |
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2067 "assignment"); |
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2068 return NULL; |
| 35742 | 2069 } |
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2070 set_context(expr1, Store, ch); |
| 35742 | 2071 |
|
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2072 ch = CHILD(n, 2); |
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2073 if (TYPE(ch) == testlist) |
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2074 expr2 = ast_for_testlist(c, ch); |
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2075 else |
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2076 expr2 = ast_for_expr(c, ch); |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2077 if (!expr2) |
| 35742 | 2078 return NULL; |
| 2079 | |
|
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
|
2080 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
|
2081 if (!newoperator) |
| 35742 | 2082 return NULL; |
| 2083 | |
|
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2084 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2085 } |
| 2086 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
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|
2087 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2088 asdl_seq *targets; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2089 node *value; |
| 35742 | 2090 expr_ty expression; |
| 2091 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2092 /* a normal assignment */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2093 REQ(CHILD(n, 1), EQUAL); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2094 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
|
2095 if (!targets) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2096 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2097 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
|
2098 expr_ty e; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2099 node *ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2100 if (TYPE(ch) == yield_expr) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2101 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
|
2102 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2103 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2104 e = ast_for_testlist(c, ch); |
| 35742 | 2105 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2106 /* set context to assign */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2107 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2108 return NULL; |
| 35742 | 2109 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2110 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
|
2111 return NULL; |
| 35742 | 2112 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2113 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
|
2114 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2115 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
|
2116 if (TYPE(value) == testlist) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2117 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
|
2118 else |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2119 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
|
2120 if (!expression) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2121 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2122 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2123 } |
| 2124 } | |
| 2125 | |
| 2126 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
|
2127 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2128 { |
| 2129 asdl_seq *seq; | |
| 2130 int i; | |
| 2131 expr_ty e; | |
| 2132 | |
| 2133 REQ(n, exprlist); | |
| 2134 | |
|
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
|
2135 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2136 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2137 return NULL; |
| 35742 | 2138 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
|
2139 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
|
2140 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2141 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2142 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
|
2143 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
|
2144 return NULL; |
| 35742 | 2145 } |
| 2146 return seq; | |
| 2147 } | |
| 2148 | |
| 2149 static stmt_ty | |
| 2150 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2151 { | |
| 2152 asdl_seq *expr_list; | |
| 2153 | |
| 2154 /* del_stmt: 'del' exprlist */ | |
| 2155 REQ(n, del_stmt); | |
| 2156 | |
| 2157 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2158 if (!expr_list) | |
| 2159 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2160 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2161 } |
| 2162 | |
| 2163 static stmt_ty | |
| 2164 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2165 { | |
| 2166 /* | |
| 2167 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2168 | yield_stmt | |
| 2169 break_stmt: 'break' | |
| 2170 continue_stmt: 'continue' | |
| 2171 return_stmt: 'return' [testlist] | |
| 2172 yield_stmt: yield_expr | |
| 2173 yield_expr: 'yield' testlist | |
| 2174 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2175 */ | |
| 2176 node *ch; | |
| 2177 | |
| 2178 REQ(n, flow_stmt); | |
| 2179 ch = CHILD(n, 0); | |
| 2180 switch (TYPE(ch)) { | |
| 2181 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
|
2182 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2183 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
|
2184 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2185 case yield_stmt: { /* will reduce to yield_expr */ |
|
40450
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Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2186 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
|
2187 if (!exp) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2188 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2189 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2190 } |
| 2191 case return_stmt: | |
| 2192 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
|
2193 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2194 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2195 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2196 if (!expression) |
| 2197 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2198 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2199 } |
| 2200 case raise_stmt: | |
| 2201 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
|
2202 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
|
2203 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
|
2204 expr_ty cause = NULL; |
| 35742 | 2205 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); |
| 2206 if (!expression) | |
| 2207 return NULL; | |
|
43102
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2208 if (NCH(ch) == 4) { |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2209 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
|
2210 if (!cause) |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2211 return NULL; |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2212 } |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2213 return Raise(expression, cause, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2214 } |
| 2215 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2216 PyErr_Format(PyExc_SystemError, |
| 35742 | 2217 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2218 return NULL; | |
| 2219 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2220 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2221 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
|
2222 return NULL; |
| 35742 | 2223 } |
| 2224 | |
| 2225 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
|
2226 alias_for_import_name(struct compiling *c, const node *n) |
| 35742 | 2227 { |
| 2228 /* | |
|
36742
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
36718
diff
changeset
|
2229 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
|
2230 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2231 dotted_name: NAME ('.' NAME)* |
| 2232 */ | |
|
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
|
2233 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
|
2234 |
| 35742 | 2235 loop: |
| 2236 switch (TYPE(n)) { | |
| 2237 case import_as_name: | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2238 str = NULL; |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2239 if (NCH(n) == 3) { |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2240 str = NEW_IDENTIFIER(CHILD(n, 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2241 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2242 return alias(NEW_IDENTIFIER(CHILD(n, 0)), str, c->c_arena); |
| 35742 | 2243 case dotted_as_name: |
| 2244 if (NCH(n) == 1) { | |
| 2245 n = CHILD(n, 0); | |
| 2246 goto loop; | |
| 2247 } | |
| 2248 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
|
2249 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
|
2250 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2251 return NULL; |
| 35742 | 2252 assert(!a->asname); |
| 2253 a->asname = NEW_IDENTIFIER(CHILD(n, 2)); | |
| 2254 return a; | |
| 2255 } | |
| 2256 break; | |
| 2257 case dotted_name: | |
| 2258 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
|
2259 return alias(NEW_IDENTIFIER(CHILD(n, 0)), NULL, c->c_arena); |
| 35742 | 2260 else { |
| 2261 /* 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
|
2262 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2263 size_t len; |
| 35742 | 2264 char *s; |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2265 PyObject *uni; |
| 35742 | 2266 |
| 2267 len = 0; | |
| 2268 for (i = 0; i < NCH(n); i += 2) | |
| 2269 /* length of string plus one for the dot */ | |
| 2270 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2271 len--; /* the last name doesn't have a dot */ | |
| 2272 str = PyString_FromStringAndSize(NULL, len); | |
| 2273 if (!str) | |
| 2274 return NULL; | |
| 2275 s = PyString_AS_STRING(str); | |
| 2276 if (!s) | |
| 2277 return NULL; | |
| 2278 for (i = 0; i < NCH(n); i += 2) { | |
| 2279 char *sch = STR(CHILD(n, i)); | |
| 2280 strcpy(s, STR(CHILD(n, i))); | |
| 2281 s += strlen(sch); | |
| 2282 *s++ = '.'; | |
| 2283 } | |
| 2284 --s; | |
| 2285 *s = '\0'; | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2286 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
|
2287 PyString_GET_SIZE(str), |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2288 NULL); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2289 Py_DECREF(str); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2290 if (!uni) |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2291 return NULL; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2292 str = uni; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2293 PyUnicode_InternInPlace(&str); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2294 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
|
2295 return alias(str, NULL, c->c_arena); |
| 35742 | 2296 } |
| 2297 break; | |
| 2298 case STAR: | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2299 str = PyUnicode_InternFromString("*"); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2300 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
|
2301 return alias(str, NULL, c->c_arena); |
| 35742 | 2302 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2303 PyErr_Format(PyExc_SystemError, |
| 35742 | 2304 "unexpected import name: %d", TYPE(n)); |
| 2305 return NULL; | |
| 2306 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2307 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2308 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2309 return NULL; |
| 2310 } | |
| 2311 | |
| 2312 static stmt_ty | |
| 2313 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2314 { | |
| 2315 /* | |
| 2316 import_stmt: import_name | import_from | |
| 2317 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
|
2318 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
|
2319 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2320 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2321 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2322 int col_offset; |
| 35742 | 2323 int i; |
| 2324 asdl_seq *aliases; | |
| 2325 | |
| 2326 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
|
2327 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2328 col_offset = n->n_col_offset; |
| 35742 | 2329 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2330 if (TYPE(n) == import_name) { |
| 35742 | 2331 n = CHILD(n, 1); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2332 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2333 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
|
2334 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2335 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2336 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
|
2337 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
|
2338 if (!import_alias) |
| 35742 | 2339 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2340 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2341 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2342 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2343 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2344 else if (TYPE(n) == import_from) { |
| 35742 | 2345 int n_children; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2346 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2347 alias_ty mod = NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2348 identifier modname; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2349 |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2350 /* 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
|
2351 optional module name */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2352 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
|
2353 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
|
2354 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
|
2355 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2356 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2357 } 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
|
2358 /* 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
|
2359 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2360 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2361 } 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
|
2362 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2363 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2364 ndots++; |
|
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 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
|
2367 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2368 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2369 /* from ... import * */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2370 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2371 n_children = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2372 if (ndots) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2373 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
|
2374 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2375 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2376 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2377 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2378 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2379 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2380 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2381 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2382 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2383 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2384 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2385 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2386 if (n_children % 2 == 0) { |
| 35742 | 2387 ast_error(n, "trailing comma not allowed without" |
| 2388 " surrounding parentheses"); | |
| 2389 return NULL; | |
| 2390 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2391 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2392 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2393 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
|
2394 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2395 } |
| 35742 | 2396 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2397 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
|
2398 if (!aliases) |
| 35742 | 2399 return NULL; |
| 2400 | |
| 2401 /* 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
|
2402 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
|
2403 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
|
2404 if (!import_alias) |
| 35742 | 2405 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2406 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2407 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2408 else { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2409 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
|
2410 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
|
2411 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2412 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2413 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
|
2414 } |
| 35742 | 2415 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2416 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2417 modname = mod->name; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2418 else |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2419 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
|
2420 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
|
2421 c->c_arena); |
| 35742 | 2422 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2423 PyErr_Format(PyExc_SystemError, |
| 35742 | 2424 "unknown import statement: starts with command '%s'", |
| 2425 STR(CHILD(n, 0))); | |
| 2426 return NULL; | |
| 2427 } | |
| 2428 | |
| 2429 static stmt_ty | |
| 2430 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2431 { | |
| 2432 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2433 identifier name; | |
| 2434 asdl_seq *s; | |
| 2435 int i; | |
| 2436 | |
| 2437 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
|
2438 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2439 if (!s) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2440 return NULL; |
| 35742 | 2441 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
|
2442 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
|
2443 if (!name) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2444 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2445 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2446 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2447 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2448 } |
| 2449 | |
| 2450 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2451 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
|
2452 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2453 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2454 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2455 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2456 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2457 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2458 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2459 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
|
2460 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2461 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2462 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2463 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2464 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2465 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2466 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2467 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2468 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
|
2469 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2470 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2471 static stmt_ty |
| 35742 | 2472 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2473 { | |
| 2474 /* assert_stmt: 'assert' test [',' test] */ | |
| 2475 REQ(n, assert_stmt); | |
| 2476 if (NCH(n) == 2) { | |
| 2477 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2478 if (!expression) | |
| 2479 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2480 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2481 } |
| 2482 else if (NCH(n) == 4) { | |
| 2483 expr_ty expr1, expr2; | |
| 2484 | |
| 2485 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2486 if (!expr1) | |
| 2487 return NULL; | |
| 2488 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2489 if (!expr2) | |
| 2490 return NULL; | |
| 2491 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2492 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2493 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2494 PyErr_Format(PyExc_SystemError, |
| 35742 | 2495 "improper number of parts to 'assert' statement: %d", |
| 2496 NCH(n)); | |
| 2497 return NULL; | |
| 2498 } | |
| 2499 | |
| 2500 static asdl_seq * | |
| 2501 ast_for_suite(struct compiling *c, const node *n) | |
| 2502 { | |
| 2503 /* 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
|
2504 asdl_seq *seq; |
| 35742 | 2505 stmt_ty s; |
| 2506 int i, total, num, end, pos = 0; | |
| 2507 node *ch; | |
| 2508 | |
| 2509 REQ(n, suite); | |
| 2510 | |
| 2511 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
|
2512 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2513 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2514 return NULL; |
| 35742 | 2515 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
|
2516 n = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2517 /* 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
|
2518 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
|
2519 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2520 end = NCH(n) - 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2521 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
|
2522 end--; |
| 35742 | 2523 /* 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
|
2524 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
|
2525 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2526 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
|
2527 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2528 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2529 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
|
2530 } |
| 35742 | 2531 } |
| 2532 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2533 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
|
2534 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2535 REQ(ch, stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2536 num = num_stmts(ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2537 if (num == 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2538 /* 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
|
2539 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
|
2540 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2541 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2542 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
|
2543 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2544 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2545 int j; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2546 ch = CHILD(ch, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2547 REQ(ch, simple_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2548 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
|
2549 /* 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
|
2550 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
|
2551 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2552 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2553 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2554 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
|
2555 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2556 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2557 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
|
2558 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2559 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2560 } |
| 35742 | 2561 } |
| 2562 assert(pos == seq->size); | |
| 2563 return seq; | |
| 2564 } | |
| 2565 | |
| 2566 static stmt_ty | |
| 2567 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2568 { | |
| 2569 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2570 ['else' ':' suite] | |
| 2571 */ | |
| 2572 char *s; | |
| 2573 | |
| 2574 REQ(n, if_stmt); | |
| 2575 | |
| 2576 if (NCH(n) == 4) { | |
| 2577 expr_ty expression; | |
| 2578 asdl_seq *suite_seq; | |
| 2579 | |
| 2580 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2581 if (!expression) | |
| 2582 return NULL; | |
| 2583 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
|
2584 if (!suite_seq) |
| 35742 | 2585 return NULL; |
| 2586 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2587 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
|
2588 c->c_arena); |
| 35742 | 2589 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2590 |
| 35742 | 2591 s = STR(CHILD(n, 4)); |
| 2592 /* s[2], the third character in the string, will be | |
| 2593 's' for el_s_e, or | |
| 2594 'i' for el_i_f | |
| 2595 */ | |
| 2596 if (s[2] == 's') { | |
| 2597 expr_ty expression; | |
| 2598 asdl_seq *seq1, *seq2; | |
| 2599 | |
| 2600 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2601 if (!expression) | |
| 2602 return NULL; | |
| 2603 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
|
2604 if (!seq1) |
| 35742 | 2605 return NULL; |
| 2606 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
|
2607 if (!seq2) |
| 35742 | 2608 return NULL; |
| 2609 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2610 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
|
2611 c->c_arena); |
| 35742 | 2612 } |
| 2613 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
|
2614 int i, n_elif, has_else = 0; |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2615 expr_ty expression; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2616 asdl_seq *suite_seq; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2617 asdl_seq *orelse = NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2618 n_elif = NCH(n) - 4; |
| 35742 | 2619 /* must reference the child n_elif+1 since 'else' token is third, |
| 2620 not fourth, child from the end. */ | |
|
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|
2621 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
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|
2622 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
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|
2623 has_else = 1; |
|
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|
2624 n_elif -= 3; |
|
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diff
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|
2625 } |
|
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|
2626 n_elif /= 4; |
| 35742 | 2627 |
|
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|
2628 if (has_else) { |
|
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|
2629 asdl_seq *suite_seq2; |
| 35742 | 2630 |
|
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|
2631 orelse = asdl_seq_new(1, c->c_arena); |
|
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|
2632 if (!orelse) |
|
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|
2633 return NULL; |
| 35742 | 2634 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
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Neal Norwitz <nnorwitz@gmail.com>
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|
2635 if (!expression) |
| 35742 | 2636 return NULL; |
|
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|
2637 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
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|
2638 if (!suite_seq) |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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|
2639 return NULL; |
|
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|
2640 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
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|
2641 if (!suite_seq2) |
| 35742 | 2642 return NULL; |
| 2643 | |
|
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|
2644 asdl_seq_SET(orelse, 0, |
|
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|
2645 If(expression, suite_seq, suite_seq2, |
|
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|
2646 LINENO(CHILD(n, NCH(n) - 6)), |
|
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|
2647 CHILD(n, NCH(n) - 6)->n_col_offset, |
|
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|
2648 c->c_arena)); |
|
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|
2649 /* the just-created orelse handled the last elif */ |
|
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|
2650 n_elif--; |
|
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|
2651 } |
| 35742 | 2652 |
|
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|
2653 for (i = 0; i < n_elif; i++) { |
|
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Four months of trunk changes (including a few releases...)
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|
2654 int off = 5 + (n_elif - i - 1) * 4; |
|
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Four months of trunk changes (including a few releases...)
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|
2655 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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|
2656 if (!newobj) |
|
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|
2657 return NULL; |
| 35742 | 2658 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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changeset
|
2659 if (!expression) |
| 35742 | 2660 return NULL; |
| 2661 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2662 if (!suite_seq) |
| 35742 | 2663 return NULL; |
| 2664 | |
|
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|
2665 asdl_seq_SET(newobj, 0, |
|
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|
2666 If(expression, suite_seq, orelse, |
|
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|
2667 LINENO(CHILD(n, off)), |
|
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|
2668 CHILD(n, off)->n_col_offset, c->c_arena)); |
|
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|
2669 orelse = newobj; |
|
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|
2670 } |
|
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|
2671 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
2672 if (!expression) |
|
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|
2673 return NULL; |
|
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|
2674 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
|
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|
2675 if (!suite_seq) |
|
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|
2676 return NULL; |
|
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|
2677 return If(expression, suite_seq, orelse, |
|
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|
2678 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2679 } |
|
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|
2680 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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changeset
|
2681 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2682 "unexpected token in 'if' statement: %s", s); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2683 return NULL; |
| 35742 | 2684 } |
| 2685 | |
| 2686 static stmt_ty | |
| 2687 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2688 { | |
| 2689 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2690 REQ(n, while_stmt); | |
| 2691 | |
| 2692 if (NCH(n) == 4) { | |
| 2693 expr_ty expression; | |
| 2694 asdl_seq *suite_seq; | |
| 2695 | |
| 2696 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2697 if (!expression) | |
| 2698 return NULL; | |
| 2699 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2700 if (!suite_seq) |
| 35742 | 2701 return NULL; |
|
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|
2702 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2703 } |
| 2704 else if (NCH(n) == 7) { | |
| 2705 expr_ty expression; | |
| 2706 asdl_seq *seq1, *seq2; | |
| 2707 | |
| 2708 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2709 if (!expression) | |
| 2710 return NULL; | |
| 2711 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
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|
2712 if (!seq1) |
| 35742 | 2713 return NULL; |
| 2714 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
|
2715 if (!seq2) |
| 35742 | 2716 return NULL; |
| 2717 | |
|
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|
2718 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2719 } |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2720 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2721 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2722 "wrong number of tokens for 'while' statement: %d", |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2723 NCH(n)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2724 return NULL; |
| 35742 | 2725 } |
| 2726 | |
| 2727 static stmt_ty | |
| 2728 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2729 { | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2730 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2731 expr_ty expression; |
| 2732 expr_ty target; | |
|
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|
2733 const node *node_target; |
| 35742 | 2734 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2735 REQ(n, for_stmt); | |
| 2736 | |
| 2737 if (NCH(n) == 9) { | |
|
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|
2738 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2739 if (!seq) |
| 2740 return NULL; | |
| 2741 } | |
| 2742 | |
|
39442
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|
2743 node_target = CHILD(n, 1); |
|
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|
2744 _target = ast_for_exprlist(c, node_target, Store); |
|
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changeset
|
2745 if (!_target) |
| 35742 | 2746 return NULL; |
|
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|
2747 /* Check the # of children rather than the length of _target, since |
|
654c380cf8b9
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|
2748 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2749 if (NCH(node_target) == 1) |
|
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|
2750 target = (expr_ty)asdl_seq_GET(_target, 0); |
| 35742 | 2751 else |
|
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|
2752 target = Tuple(_target, Store, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2753 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2754 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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diff
changeset
|
2755 if (!expression) |
| 35742 | 2756 return NULL; |
| 2757 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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diff
changeset
|
2758 if (!suite_seq) |
| 35742 | 2759 return NULL; |
| 2760 | |
|
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
|
2761 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2762 c->c_arena); |
| 35742 | 2763 } |
| 2764 | |
| 2765 static excepthandler_ty | |
| 2766 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2767 { | |
|
41824
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changeset
|
2768 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2769 REQ(exc, except_clause); |
| 2770 REQ(body, suite); | |
| 2771 | |
| 2772 if (NCH(exc) == 1) { | |
| 2773 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2774 if (!suite_seq) | |
| 2775 return NULL; | |
| 2776 | |
|
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diff
changeset
|
2777 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
|
2778 exc->n_col_offset, c->c_arena); |
| 35742 | 2779 } |
| 2780 else if (NCH(exc) == 2) { | |
| 2781 expr_ty expression; | |
| 2782 asdl_seq *suite_seq; | |
| 2783 | |
| 2784 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2785 if (!expression) | |
| 2786 return NULL; | |
| 2787 suite_seq = ast_for_suite(c, body); | |
|
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diff
changeset
|
2788 if (!suite_seq) |
| 35742 | 2789 return NULL; |
| 2790 | |
|
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changeset
|
2791 return excepthandler(expression, NULL, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2792 exc->n_col_offset, c->c_arena); |
| 35742 | 2793 } |
| 2794 else if (NCH(exc) == 4) { | |
| 2795 asdl_seq *suite_seq; | |
| 2796 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
|
2797 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
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changeset
|
2798 if (!e) |
| 35742 | 2799 return NULL; |
|
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diff
changeset
|
2800 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
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parents:
36066
diff
changeset
|
2801 if (!expression) |
|
de16a85c3b4c
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36066
diff
changeset
|
2802 return NULL; |
| 35742 | 2803 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
|
2804 if (!suite_seq) |
| 35742 | 2805 return NULL; |
| 2806 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2807 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
|
2808 exc->n_col_offset, c->c_arena); |
| 35742 | 2809 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2810 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2811 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2812 "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
|
2813 NCH(exc)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2814 return NULL; |
| 35742 | 2815 } |
| 2816 | |
| 2817 static stmt_ty | |
| 2818 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2819 { | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2820 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
|
2821 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
|
2822 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
|
2823 |
| 35742 | 2824 REQ(n, try_stmt); |
| 2825 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2826 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
|
2827 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
|
2828 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2829 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2830 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
|
2831 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
|
2832 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
|
2833 /* 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
|
2834 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
|
2835 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
|
2836 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
|
2837 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
|
2838 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2839 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2840 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2841 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2842 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
|
2843 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
|
2844 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2845 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2846 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2847 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2848 /* 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
|
2849 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
|
2850 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
|
2851 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
|
2852 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2853 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2854 } |
| 35742 | 2855 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2856 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
|
2857 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2858 return NULL; |
| 2859 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2860 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2861 if (n_except > 0) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2862 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2863 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
|
2864 /* 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
|
2865 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
|
2866 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
|
2867 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2868 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2869 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
|
2870 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
|
2871 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
|
2872 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2873 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2874 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
|
2875 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2876 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2877 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
|
2878 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
|
2879 if (!finally) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2880 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
|
2881 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2882 /* 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
|
2883 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
|
2884 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
|
2885 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2886 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2887 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
|
2888 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2889 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2890 /* 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
|
2891 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
|
2892 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2893 } |
| 2894 | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2895 static expr_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2896 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
|
2897 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2898 REQ(n, with_var); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2899 return ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2900 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2901 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2902 /* with_stmt: 'with' test [ with_var ] ':' suite */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2903 static stmt_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2904 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
|
2905 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2906 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2907 int suite_index = 3; /* skip 'with', test, and ':' */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2908 asdl_seq *suite_seq; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2909 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2910 assert(TYPE(n) == with_stmt); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2911 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
|
2912 if (TYPE(CHILD(n, 2)) == with_var) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2913 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
|
2914 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2915 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2916 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2917 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2918 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
|
2919 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2920 } |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2921 suite_index = 4; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2922 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2923 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2924 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
|
2925 if (!suite_seq) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2926 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2927 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2928 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
|
2929 n->n_col_offset, c->c_arena); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2930 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2931 |
| 35742 | 2932 static stmt_ty |
|
41824
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Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2933 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 2934 { |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2935 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2936 asdl_seq *s; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2937 expr_ty call, dummy; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2938 |
| 35742 | 2939 REQ(n, classdef); |
| 2940 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2941 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 2942 s = ast_for_suite(c, CHILD(n, 3)); |
| 2943 if (!s) | |
| 2944 return NULL; | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2945 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
41824
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
2946 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2947 } |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2948 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2949 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
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cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2950 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
|
2951 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2952 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2953 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
41824
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
2954 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2955 } |
| 2956 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2957 /* class NAME '(' arglist ')' ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2958 /* 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
|
2959 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
|
2960 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
|
2961 if (!call) |
| 35742 | 2962 return NULL; |
| 2963 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
|
2964 if (!s) |
| 35742 | 2965 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2966 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2967 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
|
2968 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
|
2969 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
41824
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
2970 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2971 } |
| 2972 | |
| 2973 static stmt_ty | |
| 2974 ast_for_stmt(struct compiling *c, const node *n) | |
| 2975 { | |
| 2976 if (TYPE(n) == stmt) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2977 assert(NCH(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2978 n = CHILD(n, 0); |
| 35742 | 2979 } |
| 2980 if (TYPE(n) == simple_stmt) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2981 assert(num_stmts(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2982 n = CHILD(n, 0); |
| 35742 | 2983 } |
| 2984 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
2985 REQ(n, small_stmt); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
2986 n = CHILD(n, 0); |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2987 /* 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
|
2988 | 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
|
2989 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2990 switch (TYPE(n)) { |
| 35742 | 2991 case expr_stmt: |
| 2992 return ast_for_expr_stmt(c, n); | |
| 2993 case del_stmt: | |
| 2994 return ast_for_del_stmt(c, n); | |
| 2995 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
|
2996 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2997 case flow_stmt: |
| 2998 return ast_for_flow_stmt(c, n); | |
| 2999 case import_stmt: | |
| 3000 return ast_for_import_stmt(c, n); | |
| 3001 case global_stmt: | |
| 3002 return ast_for_global_stmt(c, n); | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3003 case nonlocal_stmt: |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3004 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3005 case assert_stmt: |
| 3006 return ast_for_assert_stmt(c, n); | |
| 3007 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3008 PyErr_Format(PyExc_SystemError, |
| 35742 | 3009 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3010 TYPE(n), NCH(n)); | |
| 3011 return NULL; | |
| 3012 } | |
| 3013 } | |
| 3014 else { | |
| 3015 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
41824
24b60622b944
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Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3016 | funcdef | classdef | decorated |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3017 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3018 node *ch = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3019 REQ(n, compound_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3020 switch (TYPE(ch)) { |
| 35742 | 3021 case if_stmt: |
| 3022 return ast_for_if_stmt(c, ch); | |
| 3023 case while_stmt: | |
| 3024 return ast_for_while_stmt(c, ch); | |
| 3025 case for_stmt: | |
| 3026 return ast_for_for_stmt(c, ch); | |
| 3027 case try_stmt: | |
| 3028 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3029 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3030 return ast_for_with_stmt(c, ch); |
| 35742 | 3031 case funcdef: |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
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parents:
41717
diff
changeset
|
3032 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3033 case classdef: |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
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parents:
41717
diff
changeset
|
3034 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
|
3035 case decorated: |
|
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3036 return ast_for_decorated(c, ch); |
| 35742 | 3037 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3038 PyErr_Format(PyExc_SystemError, |
| 35742 | 3039 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3040 TYPE(n), NCH(n)); | |
| 3041 return NULL; | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3042 } |
| 35742 | 3043 } |
| 3044 } | |
| 3045 | |
| 3046 static PyObject * | |
| 3047 parsenumber(const char *s) | |
| 3048 { | |
|
41554
06145fbc7ab9
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changeset
|
3049 const char *end; |
|
06145fbc7ab9
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diff
changeset
|
3050 long x; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
3051 double dx; |
| 35742 | 3052 #ifndef WITHOUT_COMPLEX |
|
41554
06145fbc7ab9
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changeset
|
3053 Py_complex c; |
|
06145fbc7ab9
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diff
changeset
|
3054 int imflag; |
| 35742 | 3055 #endif |
| 3056 | |
|
41554
06145fbc7ab9
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diff
changeset
|
3057 errno = 0; |
|
06145fbc7ab9
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diff
changeset
|
3058 end = s + strlen(s) - 1; |
| 35742 | 3059 #ifndef WITHOUT_COMPLEX |
|
41554
06145fbc7ab9
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diff
changeset
|
3060 imflag = *end == 'j' || *end == 'J'; |
| 35742 | 3061 #endif |
|
41554
06145fbc7ab9
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diff
changeset
|
3062 if (s[0] == '0') { |
|
06145fbc7ab9
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diff
changeset
|
3063 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
06145fbc7ab9
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changeset
|
3064 if (x < 0 && errno == 0) { |
|
06145fbc7ab9
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changeset
|
3065 return PyLong_FromString((char *)s, |
|
06145fbc7ab9
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diff
changeset
|
3066 (char **)0, |
|
06145fbc7ab9
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diff
changeset
|
3067 0); |
|
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cc992d75d5b3
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parents:
40215
diff
changeset
|
3068 } |
|
41554
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changeset
|
3069 } |
|
06145fbc7ab9
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changeset
|
3070 else |
|
06145fbc7ab9
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diff
changeset
|
3071 x = PyOS_strtol((char *)s, (char **)&end, 0); |
|
06145fbc7ab9
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changeset
|
3072 if (*end == '\0') { |
|
06145fbc7ab9
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changeset
|
3073 if (errno != 0) |
|
06145fbc7ab9
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changeset
|
3074 return PyLong_FromString((char *)s, (char **)0, 0); |
|
06145fbc7ab9
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changeset
|
3075 return PyInt_FromLong(x); |
|
06145fbc7ab9
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changeset
|
3076 } |
|
06145fbc7ab9
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diff
changeset
|
3077 /* XXX Huge floats may silently fail */ |
| 35742 | 3078 #ifndef WITHOUT_COMPLEX |
|
41554
06145fbc7ab9
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|
3079 if (imflag) { |
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3080 c.real = 0.; |
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3081 PyFPE_START_PROTECT("atof", return 0) |
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3082 c.imag = PyOS_ascii_atof(s); |
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3083 PyFPE_END_PROTECT(c) |
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3084 return PyComplex_FromCComplex(c); |
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3085 } |
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3086 else |
| 35742 | 3087 #endif |
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3088 { |
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3089 PyFPE_START_PROTECT("atof", return 0) |
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3090 dx = PyOS_ascii_atof(s); |
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3091 PyFPE_END_PROTECT(dx) |
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3092 return PyFloat_FromDouble(dx); |
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3093 } |
| 35742 | 3094 } |
| 3095 | |
| 3096 static PyObject * | |
| 3097 decode_utf8(const char **sPtr, const char *end, char* encoding) | |
| 3098 { | |
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3099 PyObject *u, *v; |
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3100 char *s, *t; |
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3101 t = s = (char *)*sPtr; |
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3102 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
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3103 while (s < end && (*s & 0x80)) s++; |
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3104 *sPtr = s; |
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3105 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
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3106 if (u == NULL) |
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3107 return NULL; |
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3108 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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3109 Py_DECREF(u); |
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3110 return v; |
| 35742 | 3111 } |
| 3112 | |
| 3113 static PyObject * | |
| 3114 decode_unicode(const char *s, size_t len, int rawmode, const char *encoding) | |
| 3115 { | |
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3116 PyObject *v, *u; |
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3117 char *buf; |
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3118 char *p; |
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3119 const char *end; |
|
43819
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Minimal change that disables (AFAICT) the interpolation of \u and \U inside
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3120 |
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3121 if (encoding == NULL) { |
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3122 buf = (char *)s; |
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3123 u = NULL; |
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3124 } else if (strcmp(encoding, "iso-8859-1") == 0) { |
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3125 buf = (char *)s; |
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3126 u = NULL; |
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3127 } else { |
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3128 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ |
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3129 u = PyString_FromStringAndSize((char *)NULL, len * 4); |
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3130 if (u == NULL) |
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3131 return NULL; |
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3132 p = buf = PyString_AsString(u); |
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3133 end = s + len; |
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3134 while (s < end) { |
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3135 if (*s == '\\') { |
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3136 *p++ = *s++; |
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3137 if (*s & 0x80) { |
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3138 strcpy(p, "u005c"); |
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3139 p += 5; |
|
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3140 } |
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3141 } |
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3142 if (*s & 0x80) { /* XXX inefficient */ |
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3143 PyObject *w; |
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3144 char *r; |
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3145 Py_ssize_t rn, i; |
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3146 w = decode_utf8(&s, end, "utf-16-be"); |
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3147 if (w == NULL) { |
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3148 Py_DECREF(u); |
|
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3149 return NULL; |
|
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3150 } |
|
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3151 r = PyString_AS_STRING(w); |
|
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3152 rn = Py_Size(w); |
|
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3153 assert(rn % 2 == 0); |
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3154 for (i = 0; i < rn; i += 2) { |
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3155 sprintf(p, "\\u%02x%02x", |
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3156 r[i + 0] & 0xFF, |
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3157 r[i + 1] & 0xFF); |
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3158 p += 6; |
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3159 } |
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3160 Py_DECREF(w); |
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3161 } else { |
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3162 *p++ = *s++; |
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3163 } |
|
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3164 } |
|
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3165 len = p - buf; |
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3166 s = buf; |
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3167 } |
|
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3168 if (rawmode) |
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3169 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
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3170 else |
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3171 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
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3172 Py_XDECREF(u); |
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3173 return v; |
| 35742 | 3174 } |
| 3175 | |
| 3176 /* s is a Python string literal, including the bracketing quote characters, | |
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|
3177 * and r &/or b prefixes (if any), and embedded escape sequences (if any). |
| 35742 | 3178 * parsestr parses it, and returns the decoded Python string object. |
| 3179 */ | |
| 3180 static PyObject * | |
| 40894 | 3181 parsestr(const node *n, const char *encoding, int *bytesmode) |
| 35742 | 3182 { |
|
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3183 size_t len; |
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3184 const char *s = STR(n); |
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3185 int quote = Py_CHARMASK(*s); |
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3186 int rawmode = 0; |
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3187 int need_encoding; |
| 35742 | 3188 |
|
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3189 if (isalpha(quote)) { |
|
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3190 if (quote == 'b' || quote == 'B') { |
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3191 quote = *++s; |
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3192 *bytesmode = 1; |
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3193 } |
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3194 if (quote == 'r' || quote == 'R') { |
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3195 quote = *++s; |
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3196 rawmode = 1; |
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3197 } |
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3198 } |
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3199 if (quote != '\'' && quote != '\"') { |
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3200 PyErr_BadInternalCall(); |
|
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3201 return NULL; |
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3202 } |
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3203 s++; |
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3204 len = strlen(s); |
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|
3205 if (len > INT_MAX) { |
|
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|
3206 PyErr_SetString(PyExc_OverflowError, |
|
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|
3207 "string to parse is too long"); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3208 return NULL; |
|
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|
3209 } |
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Merged revisions 53952-54987 via svnmerge from
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|
3210 if (s[--len] != quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3211 PyErr_BadInternalCall(); |
|
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|
3212 return NULL; |
|
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|
3213 } |
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Merged revisions 53952-54987 via svnmerge from
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3214 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
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3215 s += 2; |
|
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Merged revisions 53952-54987 via svnmerge from
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3216 len -= 2; |
|
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3217 if (s[--len] != quote || s[--len] != quote) { |
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Merged revisions 53952-54987 via svnmerge from
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3218 PyErr_BadInternalCall(); |
|
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3219 return NULL; |
| 40894 | 3220 } |
|
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3221 } |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
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diff
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|
3222 if (!*bytesmode && !rawmode) { |
|
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3223 return decode_unicode(s, len, rawmode, encoding); |
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3224 } |
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3225 if (*bytesmode) { |
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Merged revisions 53952-54987 via svnmerge from
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|
3226 /* Disallow non-ascii characters (but not escapes) */ |
|
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|
3227 const char *c; |
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3228 for (c = s; *c; c++) { |
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Merged revisions 53952-54987 via svnmerge from
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3229 if (Py_CHARMASK(*c) >= 0x80) { |
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3230 ast_error(n, "bytes can only contain ASCII " |
|
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|
3231 "literal characters."); |
|
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3232 return NULL; |
|
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3233 } |
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3234 } |
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3235 } |
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|
3236 need_encoding = (!*bytesmode && encoding != NULL && |
|
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3237 strcmp(encoding, "utf-8") != 0 && |
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3238 strcmp(encoding, "iso-8859-1") != 0); |
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3239 if (rawmode || strchr(s, '\\') == NULL) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3240 if (need_encoding) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3241 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
|
3242 if (u == NULL || !*bytesmode) |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3243 return u; |
|
41554
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|
3244 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
|
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|
3245 Py_DECREF(u); |
|
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|
3246 return v; |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3247 } else if (*bytesmode) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3248 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
|
3249 } 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
|
3250 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
|
3251 } else { |
|
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_DecodeLatin1(s, len, NULL); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3253 } |
|
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changeset
|
3254 } |
| 35742 | 3255 |
|
41698
7d49038e99c9
Remove support for u"..." literals.
Guido van Rossum <guido@python.org>
parents:
41595
diff
changeset
|
3256 return PyString_DecodeEscape(s, len, NULL, 1, |
|
41554
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|
3257 need_encoding ? encoding : NULL); |
| 35742 | 3258 } |
| 3259 | |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3260 /* Build a Python string object out of a STRING+ atom. This takes care of |
| 35742 | 3261 * compile-time literal catenation, calling parsestr() on each piece, and |
| 3262 * pasting the intermediate results together. | |
| 3263 */ | |
| 3264 static PyObject * | |
| 40894 | 3265 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3266 { |
|
41554
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|
3267 PyObject *v; |
|
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|
3268 int i; |
|
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|
3269 REQ(CHILD(n, 0), STRING); |
|
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|
3270 v = parsestr(CHILD(n, 0), c->c_encoding, bytesmode); |
|
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|
3271 if (v != NULL) { |
|
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|
3272 /* String literal concatenation */ |
|
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|
3273 for (i = 1; i < NCH(n); i++) { |
|
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|
3274 PyObject *s; |
|
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|
3275 int subbm = 0; |
|
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|
3276 s = parsestr(CHILD(n, i), c->c_encoding, &subbm); |
|
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|
3277 if (s == NULL) |
|
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|
3278 goto onError; |
|
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changeset
|
3279 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
|
3280 ast_error(n, "cannot mix bytes and nonbytes literals"); |
|
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|
3281 goto onError; |
|
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|
3282 } |
|
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|
3283 if (PyString_Check(v) && PyString_Check(s)) { |
|
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|
3284 PyString_ConcatAndDel(&v, s); |
|
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|
3285 if (v == NULL) |
|
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|
3286 goto onError; |
|
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|
3287 } |
|
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|
3288 else { |
|
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|
3289 PyObject *temp = PyUnicode_Concat(v, s); |
|
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|
3290 Py_DECREF(s); |
|
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|
3291 Py_DECREF(v); |
|
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|
3292 v = temp; |
|
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|
3293 if (v == NULL) |
|
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|
3294 goto onError; |
|
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changeset
|
3295 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3296 } |
|
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|
3297 } |
|
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|
3298 return v; |
| 35742 | 3299 |
|
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|
3300 onError: |
|
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changeset
|
3301 Py_XDECREF(v); |
|
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changeset
|
3302 return NULL; |
| 35742 | 3303 } |