Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 49536:cbc3afc1e40a
Apply Martin's patch for bug 3685, Crash while compiling Python 3000 in
OpenBSD 4.4.
| author | Barry Warsaw <barry@python.org> |
|---|---|
| date | Fri, 17 Oct 2008 01:15:29 +0000 |
| parents | 6abada05c313 |
| children | 481ad3d9ffd1 |
| rev | line source |
|---|---|
| 35742 | 1 /* |
| 2 * This file includes functions to transform a concrete syntax tree (CST) to | |
| 3 * an abstract syntax tree (AST). The main function is PyAST_FromNode(). | |
| 4 * | |
| 5 */ | |
| 6 #include "Python.h" | |
| 7 #include "Python-ast.h" | |
| 8 #include "grammar.h" | |
| 9 #include "node.h" | |
|
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10 #include "pyarena.h" |
| 35742 | 11 #include "ast.h" |
| 12 #include "token.h" | |
| 13 #include "parsetok.h" | |
| 14 #include "graminit.h" | |
| 15 | |
| 16 #include <assert.h> | |
| 17 | |
| 18 /* Data structure used internally */ | |
| 19 struct compiling { | |
|
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parents:
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20 char *c_encoding; /* source encoding */ |
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parents:
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21 PyArena *c_arena; /* arena for allocating memeory */ |
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22 const char *c_filename; /* filename */ |
| 35742 | 23 }; |
| 24 | |
| 25 static asdl_seq *seq_for_testlist(struct compiling *, const node *); | |
| 26 static expr_ty ast_for_expr(struct compiling *, const node *); | |
| 27 static stmt_ty ast_for_stmt(struct compiling *, const node *); | |
| 28 static asdl_seq *ast_for_suite(struct compiling *, const node *); | |
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29 static asdl_seq *ast_for_exprlist(struct compiling *, const node *, |
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30 expr_context_ty); |
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31 static expr_ty ast_for_testlist(struct compiling *, const node *); |
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32 static stmt_ty ast_for_classdef(struct compiling *, const node *, asdl_seq *); |
| 35742 | 33 |
| 34 /* Note different signature for ast_for_call */ | |
| 35 static expr_ty ast_for_call(struct compiling *, const node *, expr_ty); | |
| 36 | |
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37 static PyObject *parsenumber(struct compiling *, const char *); |
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38 static PyObject *parsestr(struct compiling *, const node *n, int *bytesmode); |
| 40894 | 39 static PyObject *parsestrplus(struct compiling *, const node *n, |
| 40 int *bytesmode); | |
| 35742 | 41 |
| 42 #ifndef LINENO | |
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43 #define LINENO(n) ((n)->n_lineno) |
| 35742 | 44 #endif |
| 45 | |
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46 #define COMP_GENEXP 0 |
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47 #define COMP_LISTCOMP 1 |
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48 #define COMP_SETCOMP 2 |
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49 |
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50 static identifier |
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51 new_identifier(const char* n, PyArena *arena) |
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52 { |
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53 PyObject* id = PyUnicode_DecodeUTF8(n, strlen(n), NULL); |
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54 Py_UNICODE *u = PyUnicode_AS_UNICODE(id); |
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55 /* Check whether there are non-ASCII characters in the |
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56 identifier; if so, normalize to NFKC. */ |
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57 for (; *u; u++) { |
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58 if (*u >= 128) { |
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59 PyObject *m = PyImport_ImportModuleNoBlock("unicodedata"); |
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60 PyObject *id2; |
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61 if (!m) |
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62 return NULL; |
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63 id2 = PyObject_CallMethod(m, "normalize", "sO", "NFKC", id); |
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64 Py_DECREF(m); |
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65 if (!id2) |
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66 return NULL; |
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67 Py_DECREF(id); |
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68 id = id2; |
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69 break; |
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70 } |
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71 } |
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72 PyUnicode_InternInPlace(&id); |
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73 PyArena_AddPyObject(arena, id); |
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parents:
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74 return id; |
| 35742 | 75 } |
| 76 | |
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parents:
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77 #define NEW_IDENTIFIER(n) new_identifier(STR(n), c->c_arena) |
| 35742 | 78 |
| 79 /* This routine provides an invalid object for the syntax error. | |
| 80 The outermost routine must unpack this error and create the | |
| 81 proper object. We do this so that we don't have to pass | |
| 82 the filename to everything function. | |
| 83 | |
| 84 XXX Maybe we should just pass the filename... | |
| 85 */ | |
| 86 | |
| 87 static int | |
| 88 ast_error(const node *n, const char *errstr) | |
| 89 { | |
| 90 PyObject *u = Py_BuildValue("zi", errstr, LINENO(n)); | |
| 91 if (!u) | |
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92 return 0; |
| 35742 | 93 PyErr_SetObject(PyExc_SyntaxError, u); |
| 94 Py_DECREF(u); | |
| 95 return 0; | |
| 96 } | |
| 97 | |
| 98 static void | |
| 99 ast_error_finish(const char *filename) | |
| 100 { | |
| 101 PyObject *type, *value, *tback, *errstr, *loc, *tmp; | |
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102 long lineno; |
| 35742 | 103 |
| 104 assert(PyErr_Occurred()); | |
| 105 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
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106 return; |
| 35742 | 107 |
| 108 PyErr_Fetch(&type, &value, &tback); | |
| 109 errstr = PyTuple_GetItem(value, 0); | |
| 110 if (!errstr) | |
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111 return; |
| 35742 | 112 Py_INCREF(errstr); |
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113 lineno = PyLong_AsLong(PyTuple_GetItem(value, 1)); |
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114 if (lineno == -1) { |
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115 Py_DECREF(errstr); |
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116 return; |
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117 } |
| 35742 | 118 Py_DECREF(value); |
| 119 | |
| 120 loc = PyErr_ProgramText(filename, lineno); | |
| 121 if (!loc) { | |
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122 Py_INCREF(Py_None); |
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123 loc = Py_None; |
| 35742 | 124 } |
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125 tmp = Py_BuildValue("(zlOO)", filename, lineno, Py_None, loc); |
| 35742 | 126 Py_DECREF(loc); |
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127 if (!tmp) { |
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128 Py_DECREF(errstr); |
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129 return; |
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130 } |
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131 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 132 Py_DECREF(errstr); |
| 133 Py_DECREF(tmp); | |
| 134 if (!value) | |
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135 return; |
| 35742 | 136 PyErr_Restore(type, value, tback); |
| 137 } | |
| 138 | |
| 139 /* num_stmts() returns number of contained statements. | |
| 140 | |
| 141 Use this routine to determine how big a sequence is needed for | |
| 142 the statements in a parse tree. Its raison d'etre is this bit of | |
| 143 grammar: | |
| 144 | |
| 145 stmt: simple_stmt | compound_stmt | |
| 146 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 147 | |
| 148 A simple_stmt can contain multiple small_stmt elements joined | |
| 149 by semicolons. If the arg is a simple_stmt, the number of | |
| 150 small_stmt elements is returned. | |
| 151 */ | |
| 152 | |
| 153 static int | |
| 154 num_stmts(const node *n) | |
| 155 { | |
| 156 int i, l; | |
| 157 node *ch; | |
| 158 | |
| 159 switch (TYPE(n)) { | |
| 160 case single_input: | |
| 161 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 162 return 0; | |
| 163 else | |
| 164 return num_stmts(CHILD(n, 0)); | |
| 165 case file_input: | |
| 166 l = 0; | |
| 167 for (i = 0; i < NCH(n); i++) { | |
| 168 ch = CHILD(n, i); | |
| 169 if (TYPE(ch) == stmt) | |
| 170 l += num_stmts(ch); | |
| 171 } | |
| 172 return l; | |
| 173 case stmt: | |
| 174 return num_stmts(CHILD(n, 0)); | |
| 175 case compound_stmt: | |
| 176 return 1; | |
| 177 case simple_stmt: | |
| 178 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 179 case suite: | |
| 180 if (NCH(n) == 1) | |
| 181 return num_stmts(CHILD(n, 0)); | |
| 182 else { | |
| 183 l = 0; | |
| 184 for (i = 2; i < (NCH(n) - 1); i++) | |
| 185 l += num_stmts(CHILD(n, i)); | |
| 186 return l; | |
| 187 } | |
| 188 default: { | |
| 189 char buf[128]; | |
| 190 | |
| 191 sprintf(buf, "Non-statement found: %d %d\n", | |
| 192 TYPE(n), NCH(n)); | |
| 193 Py_FatalError(buf); | |
| 194 } | |
| 195 } | |
| 196 assert(0); | |
| 197 return 0; | |
| 198 } | |
| 199 | |
| 200 /* Transform the CST rooted at node * to the appropriate AST | |
| 201 */ | |
| 202 | |
| 203 mod_ty | |
|
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parents:
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204 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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parents:
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205 PyArena *arena) |
| 35742 | 206 { |
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207 int i, j, k, num; |
| 35742 | 208 asdl_seq *stmts = NULL; |
| 209 stmt_ty s; | |
| 210 node *ch; | |
| 211 struct compiling c; | |
| 212 | |
| 213 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
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214 c.c_encoding = "utf-8"; |
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215 if (TYPE(n) == encoding_decl) { |
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216 #if 0 |
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217 ast_error(n, "encoding declaration in Unicode string"); |
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218 goto error; |
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219 #endif |
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220 n = CHILD(n, 0); |
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221 } |
| 35742 | 222 } else if (TYPE(n) == encoding_decl) { |
| 223 c.c_encoding = STR(n); | |
| 224 n = CHILD(n, 0); | |
| 225 } else { | |
| 42403 | 226 /* PEP 3120 */ |
| 227 c.c_encoding = "utf-8"; | |
| 35742 | 228 } |
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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229 c.c_arena = arena; |
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230 c.c_filename = filename; |
| 35742 | 231 |
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232 k = 0; |
| 35742 | 233 switch (TYPE(n)) { |
| 234 case file_input: | |
|
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235 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 236 if (!stmts) |
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237 return NULL; |
| 35742 | 238 for (i = 0; i < NCH(n) - 1; i++) { |
| 239 ch = CHILD(n, i); | |
| 240 if (TYPE(ch) == NEWLINE) | |
| 241 continue; | |
| 242 REQ(ch, stmt); | |
| 243 num = num_stmts(ch); | |
| 244 if (num == 1) { | |
| 245 s = ast_for_stmt(&c, ch); | |
| 246 if (!s) | |
| 247 goto error; | |
|
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248 asdl_seq_SET(stmts, k++, s); |
| 35742 | 249 } |
| 250 else { | |
| 251 ch = CHILD(ch, 0); | |
| 252 REQ(ch, simple_stmt); | |
| 253 for (j = 0; j < num; j++) { | |
| 254 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 255 if (!s) | |
| 256 goto error; | |
|
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257 asdl_seq_SET(stmts, k++, s); |
| 35742 | 258 } |
| 259 } | |
| 260 } | |
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261 return Module(stmts, arena); |
| 35742 | 262 case eval_input: { |
| 263 expr_ty testlist_ast; | |
| 264 | |
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265 /* XXX Why not comp_for here? */ |
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266 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 267 if (!testlist_ast) |
| 268 goto error; | |
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269 return Expression(testlist_ast, arena); |
| 35742 | 270 } |
| 271 case single_input: | |
| 272 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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273 stmts = asdl_seq_new(1, arena); |
| 35742 | 274 if (!stmts) |
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275 goto error; |
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276 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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277 arena)); |
|
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278 if (!asdl_seq_GET(stmts, 0)) |
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279 goto error; |
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280 return Interactive(stmts, arena); |
| 35742 | 281 } |
| 282 else { | |
| 283 n = CHILD(n, 0); | |
| 284 num = num_stmts(n); | |
|
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285 stmts = asdl_seq_new(num, arena); |
| 35742 | 286 if (!stmts) |
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287 goto error; |
| 35742 | 288 if (num == 1) { |
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289 s = ast_for_stmt(&c, n); |
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290 if (!s) |
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291 goto error; |
| 35742 | 292 asdl_seq_SET(stmts, 0, s); |
| 293 } | |
| 294 else { | |
| 295 /* Only a simple_stmt can contain multiple statements. */ | |
| 296 REQ(n, simple_stmt); | |
| 297 for (i = 0; i < NCH(n); i += 2) { | |
| 298 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 299 break; | |
| 300 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 301 if (!s) | |
| 302 goto error; | |
| 303 asdl_seq_SET(stmts, i / 2, s); | |
| 304 } | |
| 305 } | |
| 306 | |
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307 return Interactive(stmts, arena); |
| 35742 | 308 } |
| 309 default: | |
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310 PyErr_Format(PyExc_SystemError, |
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311 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 312 goto error; |
| 313 } | |
| 314 error: | |
| 315 ast_error_finish(filename); | |
| 316 return NULL; | |
| 317 } | |
| 318 | |
| 319 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 320 */ | |
| 321 | |
| 322 static operator_ty | |
| 323 get_operator(const node *n) | |
| 324 { | |
| 325 switch (TYPE(n)) { | |
| 326 case VBAR: | |
| 327 return BitOr; | |
| 328 case CIRCUMFLEX: | |
| 329 return BitXor; | |
| 330 case AMPER: | |
| 331 return BitAnd; | |
| 332 case LEFTSHIFT: | |
| 333 return LShift; | |
| 334 case RIGHTSHIFT: | |
| 335 return RShift; | |
| 336 case PLUS: | |
| 337 return Add; | |
| 338 case MINUS: | |
| 339 return Sub; | |
| 340 case STAR: | |
| 341 return Mult; | |
| 342 case SLASH: | |
| 343 return Div; | |
| 344 case DOUBLESLASH: | |
| 345 return FloorDiv; | |
| 346 case PERCENT: | |
| 347 return Mod; | |
| 348 default: | |
|
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349 return (operator_ty)0; |
| 35742 | 350 } |
| 351 } | |
| 352 | |
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353 static const char* FORBIDDEN[] = { |
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354 "None", |
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355 "True", |
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356 "False", |
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357 NULL, |
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358 }; |
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359 |
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360 static int |
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361 forbidden_name(expr_ty e, const node *n) |
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362 { |
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363 const char **p; |
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364 assert(PyUnicode_Check(e->v.Name.id)); |
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365 for (p = FORBIDDEN; *p; p++) { |
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366 if (PyUnicode_CompareWithASCIIString(e->v.Name.id, *p) == 0) { |
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367 ast_error(n, "assignment to keyword"); |
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368 return 1; |
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369 } |
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370 } |
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371 return 0; |
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372 } |
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373 |
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374 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 375 |
| 376 Only sets context for expr kinds that "can appear in assignment context" | |
| 377 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 378 an appropriate syntax error and returns false. | |
| 379 */ | |
| 380 | |
| 381 static int | |
|
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382 set_context(struct compiling *c, expr_ty e, expr_context_ty ctx, const node *n) |
| 35742 | 383 { |
| 384 asdl_seq *s = NULL; | |
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385 /* If a particular expression type can't be used for assign / delete, |
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386 set expr_name to its name and an error message will be generated. |
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387 */ |
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388 const char* expr_name = NULL; |
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389 |
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390 /* The ast defines augmented store and load contexts, but the |
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391 implementation here doesn't actually use them. The code may be |
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392 a little more complex than necessary as a result. It also means |
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393 that expressions in an augmented assignment have a Store context. |
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394 Consider restructuring so that augmented assignment uses |
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395 set_context(), too. |
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396 */ |
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397 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 398 |
| 399 switch (e->kind) { | |
| 400 case Attribute_kind: | |
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401 e->v.Attribute.ctx = ctx; |
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402 break; |
| 35742 | 403 case Subscript_kind: |
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404 e->v.Subscript.ctx = ctx; |
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405 break; |
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406 case Starred_kind: |
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407 e->v.Starred.ctx = ctx; |
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408 if (!set_context(c, e->v.Starred.value, ctx, n)) |
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409 return 0; |
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410 break; |
| 35742 | 411 case Name_kind: |
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412 if (ctx == Store) { |
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413 if (forbidden_name(e, n)) |
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414 return 0; /* forbidden_name() calls ast_error() */ |
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415 } |
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416 e->v.Name.ctx = ctx; |
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417 break; |
| 35742 | 418 case List_kind: |
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419 e->v.List.ctx = ctx; |
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420 s = e->v.List.elts; |
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421 break; |
| 35742 | 422 case Tuple_kind: |
| 423 if (asdl_seq_LEN(e->v.Tuple.elts) == 0) | |
| 424 return ast_error(n, "can't assign to ()"); | |
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425 e->v.Tuple.ctx = ctx; |
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426 s = e->v.Tuple.elts; |
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427 break; |
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428 case Lambda_kind: |
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429 expr_name = "lambda"; |
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430 break; |
| 35742 | 431 case Call_kind: |
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432 expr_name = "function call"; |
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433 break; |
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434 case BoolOp_kind: |
| 35742 | 435 case BinOp_kind: |
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436 case UnaryOp_kind: |
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437 expr_name = "operator"; |
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438 break; |
| 35742 | 439 case GeneratorExp_kind: |
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440 expr_name = "generator expression"; |
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441 break; |
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442 case Yield_kind: |
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443 expr_name = "yield expression"; |
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445 case ListComp_kind: |
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446 expr_name = "list comprehension"; |
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447 break; |
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448 case SetComp_kind: |
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449 expr_name = "set comprehension"; |
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450 break; |
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451 case DictComp_kind: |
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452 expr_name = "dict comprehension"; |
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453 break; |
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454 case Dict_kind: |
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455 case Set_kind: |
| 35742 | 456 case Num_kind: |
| 457 case Str_kind: | |
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458 expr_name = "literal"; |
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459 break; |
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460 case Ellipsis_kind: |
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461 expr_name = "Ellipsis"; |
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462 break; |
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463 case Compare_kind: |
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464 expr_name = "comparison"; |
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465 break; |
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466 case IfExp_kind: |
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467 expr_name = "conditional expression"; |
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468 break; |
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469 default: |
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470 PyErr_Format(PyExc_SystemError, |
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471 "unexpected expression in assignment %d (line %d)", |
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472 e->kind, e->lineno); |
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473 return 0; |
| 35742 | 474 } |
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475 /* Check for error string set by switch */ |
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476 if (expr_name) { |
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477 char buf[300]; |
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478 PyOS_snprintf(buf, sizeof(buf), |
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479 "can't %s %s", |
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480 ctx == Store ? "assign to" : "delete", |
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481 expr_name); |
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482 return ast_error(n, buf); |
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483 } |
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484 |
| 35742 | 485 /* If the LHS is a list or tuple, we need to set the assignment |
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486 context for all the contained elements. |
| 35742 | 487 */ |
| 488 if (s) { | |
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489 int i; |
| 35742 | 490 |
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491 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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492 if (!set_context(c, (expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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493 return 0; |
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494 } |
| 35742 | 495 } |
| 496 return 1; | |
| 497 } | |
| 498 | |
| 499 static operator_ty | |
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500 ast_for_augassign(struct compiling *c, const node *n) |
| 35742 | 501 { |
| 502 REQ(n, augassign); | |
| 503 n = CHILD(n, 0); | |
| 504 switch (STR(n)[0]) { | |
| 505 case '+': | |
| 506 return Add; | |
| 507 case '-': | |
| 508 return Sub; | |
| 509 case '/': | |
| 510 if (STR(n)[1] == '/') | |
| 511 return FloorDiv; | |
| 512 else | |
| 513 return Div; | |
| 514 case '%': | |
| 515 return Mod; | |
| 516 case '<': | |
| 517 return LShift; | |
| 518 case '>': | |
| 519 return RShift; | |
| 520 case '&': | |
| 521 return BitAnd; | |
| 522 case '^': | |
| 523 return BitXor; | |
| 524 case '|': | |
| 525 return BitOr; | |
| 526 case '*': | |
| 527 if (STR(n)[1] == '*') | |
| 528 return Pow; | |
| 529 else | |
| 530 return Mult; | |
| 531 default: | |
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532 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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533 return (operator_ty)0; |
| 35742 | 534 } |
| 535 } | |
| 536 | |
| 537 static cmpop_ty | |
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538 ast_for_comp_op(struct compiling *c, const node *n) |
| 35742 | 539 { |
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540 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 541 |'is' 'not' |
| 542 */ | |
| 543 REQ(n, comp_op); | |
| 544 if (NCH(n) == 1) { | |
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545 n = CHILD(n, 0); |
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546 switch (TYPE(n)) { |
| 35742 | 547 case LESS: |
| 548 return Lt; | |
| 549 case GREATER: | |
| 550 return Gt; | |
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551 case EQEQUAL: /* == */ |
| 35742 | 552 return Eq; |
| 553 case LESSEQUAL: | |
| 554 return LtE; | |
| 555 case GREATEREQUAL: | |
| 556 return GtE; | |
| 557 case NOTEQUAL: | |
| 558 return NotEq; | |
| 559 case NAME: | |
| 560 if (strcmp(STR(n), "in") == 0) | |
| 561 return In; | |
| 562 if (strcmp(STR(n), "is") == 0) | |
| 563 return Is; | |
| 564 default: | |
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565 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 566 STR(n)); |
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567 return (cmpop_ty)0; |
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568 } |
| 35742 | 569 } |
| 570 else if (NCH(n) == 2) { | |
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571 /* handle "not in" and "is not" */ |
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572 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 573 case NAME: |
| 574 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 575 return NotIn; | |
| 576 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 577 return IsNot; | |
| 578 default: | |
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579 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 580 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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581 return (cmpop_ty)0; |
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582 } |
| 35742 | 583 } |
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584 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 585 NCH(n)); |
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586 return (cmpop_ty)0; |
| 35742 | 587 } |
| 588 | |
| 589 static asdl_seq * | |
| 590 seq_for_testlist(struct compiling *c, const node *n) | |
| 591 { | |
| 592 /* testlist: test (',' test)* [','] */ | |
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593 asdl_seq *seq; |
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594 expr_ty expression; |
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595 int i; |
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596 assert(TYPE(n) == testlist || TYPE(n) == testlist_comp); |
| 35742 | 597 |
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598 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 599 if (!seq) |
| 600 return NULL; | |
| 601 | |
| 602 for (i = 0; i < NCH(n); i += 2) { | |
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603 assert(TYPE(CHILD(n, i)) == test || TYPE(CHILD(n, i)) == test_nocond); |
| 35742 | 604 |
| 605 expression = ast_for_expr(c, CHILD(n, i)); | |
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606 if (!expression) |
| 35742 | 607 return NULL; |
| 608 | |
| 609 assert(i / 2 < seq->size); | |
| 610 asdl_seq_SET(seq, i / 2, expression); | |
| 611 } | |
| 612 return seq; | |
| 613 } | |
| 614 | |
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615 static arg_ty |
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616 compiler_arg(struct compiling *c, const node *n) |
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617 { |
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618 identifier name; |
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619 expr_ty annotation = NULL; |
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620 node *ch; |
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621 |
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622 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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623 ch = CHILD(n, 0); |
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624 name = NEW_IDENTIFIER(ch); |
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625 if (!name) |
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626 return NULL; |
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627 |
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628 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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629 annotation = ast_for_expr(c, CHILD(n, 2)); |
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630 if (!annotation) |
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631 return NULL; |
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632 } |
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633 |
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634 return arg(name, annotation, c->c_arena); |
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635 #if 0 |
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636 result = Tuple(args, Store, LINENO(n), n->n_col_offset, c->c_arena); |
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637 if (!set_context(c, result, Store, n)) |
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638 return NULL; |
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639 return result; |
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640 #endif |
| 35742 | 641 } |
| 642 | |
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643 /* returns -1 if failed to handle keyword only arguments |
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644 returns new position to keep processing if successful |
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645 (',' tfpdef ['=' test])* |
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646 ^^^ |
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647 start pointing here |
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648 */ |
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649 static int |
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650 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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651 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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652 { |
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653 node *ch; |
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654 expr_ty expression, annotation; |
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655 arg_ty arg; |
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656 int i = start; |
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657 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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658 |
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659 if (kwonlyargs == NULL) { |
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660 ast_error(CHILD(n, start), "named arguments must follow bare *"); |
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661 return -1; |
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662 } |
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663 assert(kwdefaults != NULL); |
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664 while (i < NCH(n)) { |
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665 ch = CHILD(n, i); |
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666 switch (TYPE(ch)) { |
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667 case vfpdef: |
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668 case tfpdef: |
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669 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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670 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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671 asdl_seq_SET(kwdefaults, j, expression); |
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672 i += 2; /* '=' and test */ |
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673 } |
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674 else { /* setting NULL if no default value exists */ |
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675 asdl_seq_SET(kwdefaults, j, NULL); |
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676 } |
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677 if (NCH(ch) == 3) { |
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678 /* ch is NAME ':' test */ |
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679 annotation = ast_for_expr(c, CHILD(ch, 2)); |
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680 if (!annotation) { |
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681 ast_error(ch, "expected expression"); |
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682 goto error; |
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683 } |
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684 } |
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685 else { |
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686 annotation = NULL; |
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687 } |
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688 ch = CHILD(ch, 0); |
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689 arg = arg(NEW_IDENTIFIER(ch), annotation, c->c_arena); |
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690 if (!arg) { |
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691 ast_error(ch, "expecting name"); |
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692 goto error; |
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693 } |
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694 asdl_seq_SET(kwonlyargs, j++, arg); |
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695 i += 2; /* the name and the comma */ |
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696 break; |
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697 case DOUBLESTAR: |
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698 return i; |
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699 default: |
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700 ast_error(ch, "unexpected node"); |
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701 goto error; |
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702 } |
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703 } |
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704 return i; |
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705 error: |
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706 return -1; |
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707 } |
| 35742 | 708 |
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709 /* Create AST for argument list. */ |
| 35742 | 710 |
| 711 static arguments_ty | |
| 712 ast_for_arguments(struct compiling *c, const node *n) | |
| 713 { | |
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714 /* This function handles both typedargslist (function definition) |
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715 and varargslist (lambda definition). |
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716 |
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717 parameters: '(' [typedargslist] ')' |
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718 typedargslist: ((tfpdef ['=' test] ',')* |
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719 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
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720 | '**' tfpdef) |
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721 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
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722 tfpdef: NAME [':' test] |
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723 varargslist: ((vfpdef ['=' test] ',')* |
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9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
724 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
725 | '**' vfpdef) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
726 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
727 vfpdef: NAME |
| 35742 | 728 */ |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
729 int i, j, k, nposargs = 0, nkwonlyargs = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
730 int nposdefaults = 0, found_default = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
731 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 732 identifier vararg = NULL, kwarg = NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
733 arg_ty arg; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
734 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 735 node *ch; |
| 736 | |
| 737 if (TYPE(n) == parameters) { | |
|
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1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
738 if (NCH(n) == 2) /* () as argument list */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
739 return arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
740 NULL, c->c_arena); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
741 n = CHILD(n, 1); |
| 35742 | 742 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
743 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 744 |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
745 /* First count the number of positional args & defaults. The |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
746 variable i is the loop index for this for loop and the next. |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
747 The next loop picks up where the first leaves off. |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
748 */ |
| 35742 | 749 for (i = 0; i < NCH(n); i++) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
750 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
751 if (TYPE(ch) == STAR) { |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
752 /* skip star */ |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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changeset
|
753 i++; |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
754 if (i < NCH(n) && /* skip argument following star */ |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
755 (TYPE(CHILD(n, i)) == tfpdef || |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
756 TYPE(CHILD(n, i)) == vfpdef)) { |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
757 i++; |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
758 } |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
759 break; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
760 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
761 if (TYPE(ch) == DOUBLESTAR) break; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
762 if (TYPE(ch) == vfpdef || TYPE(ch) == tfpdef) nposargs++; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
763 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
764 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
765 /* count the number of keyword only args & |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
766 defaults for keyword only args */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
767 for ( ; i < NCH(n); ++i) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
768 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
769 if (TYPE(ch) == DOUBLESTAR) break; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
770 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 771 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
772 posargs = (nposargs ? asdl_seq_new(nposargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
773 if (!posargs && nposargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
774 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
775 kwonlyargs = (nkwonlyargs ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
776 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
|
777 if (!kwonlyargs && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
778 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
779 posdefaults = (nposdefaults ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
780 asdl_seq_new(nposdefaults, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
781 if (!posdefaults && nposdefaults) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
782 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
783 /* 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
|
784 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
|
785 - 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
|
786 kwdefaults = (nkwonlyargs ? |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
787 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
|
788 if (!kwdefaults && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
789 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
790 |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
791 if (nposargs + nkwonlyargs > 255) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
792 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
|
793 return NULL; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
794 } |
| 35742 | 795 |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
796 /* tfpdef: NAME [':' test] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
797 vfpdef: NAME |
| 35742 | 798 */ |
| 799 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
800 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
|
801 k = 0; /* index for args */ |
| 35742 | 802 while (i < NCH(n)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
803 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
804 switch (TYPE(ch)) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
805 case tfpdef: |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
806 case vfpdef: |
| 35742 | 807 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 808 anything other than EQUAL or a comma? */ | |
| 809 /* XXX Should NCH(n) check be made a separate check? */ | |
| 810 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
|
811 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
|
812 if (!expression) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
813 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
814 assert(posdefaults != NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
815 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 816 i += 2; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
817 found_default = 1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
818 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
819 else if (found_default) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
820 ast_error(n, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
821 "non-default argument follows default argument"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
822 goto error; |
| 35742 | 823 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
824 arg = compiler_arg(c, ch); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
825 if (!arg) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
826 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
827 asdl_seq_SET(posargs, k++, arg); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
828 |
| 35742 | 829 i += 2; /* the name and the comma */ |
| 830 break; | |
| 831 case STAR: | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
832 if (i+1 >= NCH(n)) { |
|
44246
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
833 ast_error(CHILD(n, i), |
|
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
834 "named arguments must follow bare *"); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
835 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
836 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
837 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
|
838 if (TYPE(ch) == COMMA) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
839 int res = 0; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
840 i += 2; /* now follows keyword only arguments */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
841 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
842 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
843 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
844 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
|
845 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
846 else { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
847 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
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Neal Norwitz <nnorwitz@gmail.com>
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|
848 if (NCH(ch) > 1) { |
|
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|
849 /* there is an annotation on the vararg */ |
|
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|
850 varargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
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|
851 } |
|
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Jiwon Seo's PEP 3102 implementation.
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|
852 i += 3; |
|
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|
853 if (i < NCH(n) && (TYPE(CHILD(n, i)) == tfpdef |
|
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|
854 || TYPE(CHILD(n, i)) == vfpdef)) { |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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|
855 int res = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
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|
856 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
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|
857 kwonlyargs, kwdefaults); |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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|
858 if (res == -1) goto error; |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
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|
859 i = res; /* res has new position to process */ |
|
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Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
860 } |
|
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parents:
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|
861 } |
| 35742 | 862 break; |
| 863 case DOUBLESTAR: | |
|
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|
864 ch = CHILD(n, i+1); /* tfpdef */ |
|
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|
865 assert(TYPE(ch) == tfpdef || TYPE(ch) == vfpdef); |
|
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|
866 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
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|
867 if (NCH(ch) > 1) { |
|
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|
868 /* there is an annotation on the kwarg */ |
|
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|
869 kwargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
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|
870 } |
| 35742 | 871 i += 3; |
| 872 break; | |
| 873 default: | |
|
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f531c05cd240
Convert all internal errors from Exception to SystemError
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parents:
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diff
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|
874 PyErr_Format(PyExc_SystemError, |
| 35742 | 875 "unexpected node in varargslist: %d @ %d", |
| 876 TYPE(ch), i); | |
| 877 goto error; | |
|
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Guido van Rossum <guido@python.org>
parents:
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|
878 } |
| 35742 | 879 } |
|
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|
880 return arguments(posargs, vararg, varargannotation, kwonlyargs, kwarg, |
|
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|
881 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 882 error: |
|
35873
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Neal Norwitz <nnorwitz@gmail.com>
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diff
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|
883 Py_XDECREF(vararg); |
|
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diff
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|
884 Py_XDECREF(kwarg); |
| 35742 | 885 return NULL; |
| 886 } | |
| 887 | |
| 888 static expr_ty | |
| 889 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 890 { | |
|
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Neal Norwitz <nnorwitz@gmail.com>
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|
891 expr_ty e; |
|
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parents:
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|
892 identifier id; |
|
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Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
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diff
changeset
|
893 int lineno, col_offset; |
| 35742 | 894 int i; |
| 895 | |
| 896 REQ(n, dotted_name); | |
|
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diff
changeset
|
897 |
|
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|
898 lineno = LINENO(n); |
|
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|
899 col_offset = n->n_col_offset; |
|
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Patch #1440601: Add col_offset attribute to AST nodes.
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diff
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|
900 |
| 35742 | 901 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 902 if (!id) | |
|
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ea083efdc96c
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parents:
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diff
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|
903 return NULL; |
|
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Patch #1440601: Add col_offset attribute to AST nodes.
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|
904 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 905 if (!e) |
|
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parents:
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|
906 return NULL; |
| 35742 | 907 |
| 908 for (i = 2; i < NCH(n); i+=2) { | |
| 909 id = NEW_IDENTIFIER(CHILD(n, i)); | |
|
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|
910 if (!id) |
|
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|
911 return NULL; |
|
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|
912 e = Attribute(e, id, Load, lineno, col_offset, c->c_arena); |
|
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|
913 if (!e) |
|
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changeset
|
914 return NULL; |
| 35742 | 915 } |
| 916 | |
| 917 return e; | |
| 918 } | |
| 919 | |
| 920 static expr_ty | |
| 921 ast_for_decorator(struct compiling *c, const node *n) | |
| 922 { | |
| 923 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 924 expr_ty d = NULL; | |
|
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|
925 expr_ty name_expr; |
| 35742 | 926 |
| 927 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
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parents:
36242
diff
changeset
|
928 REQ(CHILD(n, 0), AT); |
|
a625e8876407
Improved handling of syntax errors.
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parents:
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diff
changeset
|
929 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 930 |
| 931 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 932 if (!name_expr) | |
|
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|
933 return NULL; |
|
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|
934 |
| 35742 | 935 if (NCH(n) == 3) { /* No arguments */ |
|
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|
936 d = name_expr; |
|
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|
937 name_expr = NULL; |
| 35742 | 938 } |
| 939 else if (NCH(n) == 5) { /* Call with no arguments */ | |
|
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|
940 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
|
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f731859e9b3b
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|
941 n->n_col_offset, c->c_arena); |
|
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|
942 if (!d) |
|
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|
943 return NULL; |
|
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Four months of trunk changes (including a few releases...)
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changeset
|
944 name_expr = NULL; |
| 35742 | 945 } |
| 946 else { | |
|
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|
947 d = ast_for_call(c, CHILD(n, 3), name_expr); |
|
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Four months of trunk changes (including a few releases...)
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|
948 if (!d) |
|
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Four months of trunk changes (including a few releases...)
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|
949 return NULL; |
|
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Four months of trunk changes (including a few releases...)
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|
950 name_expr = NULL; |
| 35742 | 951 } |
| 952 | |
| 953 return d; | |
| 954 } | |
| 955 | |
| 956 static asdl_seq* | |
| 957 ast_for_decorators(struct compiling *c, const node *n) | |
| 958 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
959 asdl_seq* decorator_seq; |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
960 expr_ty d; |
| 35742 | 961 int i; |
| 962 | |
| 963 REQ(n, decorators); | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
964 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 965 if (!decorator_seq) |
| 966 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
967 |
| 35742 | 968 for (i = 0; i < NCH(n); i++) { |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
969 d = ast_for_decorator(c, CHILD(n, i)); |
|
40450
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Four months of trunk changes (including a few releases...)
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|
970 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
971 return NULL; |
|
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changeset
|
972 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 973 } |
| 974 return decorator_seq; | |
| 975 } | |
| 976 | |
| 977 static stmt_ty | |
|
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|
978 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 979 { |
|
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changeset
|
980 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
|
36072
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Cleanup a bit and make things more consistent.
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parents:
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|
981 identifier name; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
982 arguments_ty args; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
983 asdl_seq *body; |
|
40529
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parents:
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|
984 expr_ty returns = NULL; |
|
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changeset
|
985 int name_i = 1; |
| 35742 | 986 |
| 987 REQ(n, funcdef); | |
| 988 | |
| 989 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 990 if (!name) | |
|
40450
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|
991 return NULL; |
| 35742 | 992 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 993 if (!args) | |
|
40450
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|
994 return NULL; |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
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parents:
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diff
changeset
|
995 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
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parents:
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diff
changeset
|
996 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
|
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parents:
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|
997 if (!returns) |
|
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parents:
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diff
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|
998 return NULL; |
|
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parents:
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|
999 name_i += 2; |
|
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diff
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|
1000 } |
| 35742 | 1001 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 1002 if (!body) | |
|
40450
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|
1003 return NULL; |
| 35742 | 1004 |
|
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parents:
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|
1005 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
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changeset
|
1006 n->n_col_offset, c->c_arena); |
| 35742 | 1007 } |
| 1008 | |
|
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|
1009 static stmt_ty |
|
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|
1010 ast_for_decorated(struct compiling *c, const node *n) |
|
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|
1011 { |
|
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|
1012 /* decorated: decorators (classdef | funcdef) */ |
|
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|
1013 stmt_ty thing = NULL; |
|
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|
1014 asdl_seq *decorator_seq = NULL; |
|
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changeset
|
1015 |
|
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changeset
|
1016 REQ(n, decorated); |
|
24b60622b944
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changeset
|
1017 |
|
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1018 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
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1019 if (!decorator_seq) |
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1020 return NULL; |
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1021 |
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1022 assert(TYPE(CHILD(n, 1)) == funcdef || |
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1023 TYPE(CHILD(n, 1)) == classdef); |
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1024 |
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1025 if (TYPE(CHILD(n, 1)) == funcdef) { |
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1026 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
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1027 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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1028 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
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1029 } |
|
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1030 /* we count the decorators in when talking about the class' or |
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1031 * function's line number */ |
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1032 if (thing) { |
|
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1033 thing->lineno = LINENO(n); |
|
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1034 thing->col_offset = n->n_col_offset; |
|
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1035 } |
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1036 return thing; |
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1037 } |
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1038 |
| 35742 | 1039 static expr_ty |
| 1040 ast_for_lambdef(struct compiling *c, const node *n) | |
| 1041 { | |
|
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1042 /* lambdef: 'lambda' [varargslist] ':' test |
|
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1043 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1044 arguments_ty args; |
| 1045 expr_ty expression; | |
| 1046 | |
| 1047 if (NCH(n) == 3) { | |
|
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1048 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
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1049 NULL, c->c_arena); |
| 35742 | 1050 if (!args) |
| 1051 return NULL; | |
| 1052 expression = ast_for_expr(c, CHILD(n, 2)); | |
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1053 if (!expression) |
| 35742 | 1054 return NULL; |
| 1055 } | |
| 1056 else { | |
| 1057 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1058 if (!args) | |
| 1059 return NULL; | |
| 1060 expression = ast_for_expr(c, CHILD(n, 3)); | |
|
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1061 if (!expression) |
| 35742 | 1062 return NULL; |
| 1063 } | |
| 1064 | |
|
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1065 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1066 } |
| 1067 | |
|
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1068 static expr_ty |
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1069 ast_for_ifexpr(struct compiling *c, const node *n) |
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1070 { |
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1071 /* test: or_test 'if' or_test 'else' test */ |
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1072 expr_ty expression, body, orelse; |
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1073 |
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1074 assert(NCH(n) == 5); |
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1075 body = ast_for_expr(c, CHILD(n, 0)); |
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1076 if (!body) |
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1077 return NULL; |
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1078 expression = ast_for_expr(c, CHILD(n, 2)); |
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1079 if (!expression) |
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1080 return NULL; |
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1081 orelse = ast_for_expr(c, CHILD(n, 4)); |
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1082 if (!orelse) |
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1083 return NULL; |
|
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1084 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
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1085 c->c_arena); |
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1086 } |
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1087 |
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1088 /* |
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1089 Count the number of 'for' loops in a comprehension. |
| 35742 | 1090 |
|
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1091 Helper for ast_for_comprehension(). |
| 35742 | 1092 */ |
| 1093 | |
| 1094 static int | |
|
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1095 count_comp_fors(struct compiling *c, const node *n) |
| 35742 | 1096 { |
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1097 int n_fors = 0; |
| 35742 | 1098 |
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1099 count_comp_for: |
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1100 n_fors++; |
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1101 REQ(n, comp_for); |
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1102 if (NCH(n) == 5) |
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1103 n = CHILD(n, 4); |
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1104 else |
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1105 return n_fors; |
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1106 count_comp_iter: |
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1107 REQ(n, comp_iter); |
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1108 n = CHILD(n, 0); |
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1109 if (TYPE(n) == comp_for) |
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1110 goto count_comp_for; |
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1111 else if (TYPE(n) == comp_if) { |
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1112 if (NCH(n) == 3) { |
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1113 n = CHILD(n, 2); |
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1114 goto count_comp_iter; |
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1115 } |
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1116 else |
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1117 return n_fors; |
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1118 } |
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1119 |
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1120 /* Should never be reached */ |
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1121 PyErr_SetString(PyExc_SystemError, |
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1122 "logic error in count_comp_fors"); |
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1123 return -1; |
| 35742 | 1124 } |
| 1125 | |
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1126 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1127 |
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1128 Helper for ast_for_comprehension(). |
| 35742 | 1129 */ |
| 1130 | |
| 1131 static int | |
|
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1132 count_comp_ifs(struct compiling *c, const node *n) |
| 35742 | 1133 { |
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1134 int n_ifs = 0; |
| 35742 | 1135 |
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1136 while (1) { |
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1137 REQ(n, comp_iter); |
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1138 if (TYPE(CHILD(n, 0)) == comp_for) |
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1139 return n_ifs; |
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1140 n = CHILD(n, 0); |
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1141 REQ(n, comp_if); |
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1142 n_ifs++; |
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1143 if (NCH(n) == 2) |
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1144 return n_ifs; |
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1145 n = CHILD(n, 2); |
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1146 } |
| 35742 | 1147 } |
| 1148 | |
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1149 static asdl_seq * |
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1150 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1151 { |
| 1152 int i, n_fors; | |
|
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1153 asdl_seq *comps; |
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1154 |
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1155 n_fors = count_comp_fors(c, n); |
| 35742 | 1156 if (n_fors == -1) |
| 1157 return NULL; | |
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1158 |
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1159 comps = asdl_seq_new(n_fors, c->c_arena); |
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1160 if (!comps) |
| 35742 | 1161 return NULL; |
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1162 |
| 35742 | 1163 for (i = 0; i < n_fors; i++) { |
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1164 comprehension_ty comp; |
| 35742 | 1165 asdl_seq *t; |
| 1166 expr_ty expression; | |
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1167 node *for_ch; |
| 35742 | 1168 |
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1169 REQ(n, comp_for); |
| 35742 | 1170 |
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1171 for_ch = CHILD(n, 1); |
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1172 t = ast_for_exprlist(c, for_ch, Store); |
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1173 if (!t) |
| 35742 | 1174 return NULL; |
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1175 expression = ast_for_expr(c, CHILD(n, 3)); |
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1176 if (!expression) |
| 35742 | 1177 return NULL; |
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1178 |
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1179 /* Check the # of children rather than the length of t, since |
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1180 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
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1181 if (NCH(for_ch) == 1) |
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1182 comp = comprehension((expr_ty)asdl_seq_GET(t, 0), expression, |
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1183 NULL, c->c_arena); |
| 35742 | 1184 else |
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1185 comp = comprehension(Tuple(t, Store, LINENO(n), n->n_col_offset, |
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1186 c->c_arena), |
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1187 expression, NULL, c->c_arena); |
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1188 |
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1189 if (!comp) |
| 35742 | 1190 return NULL; |
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1191 |
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1192 if (NCH(n) == 5) { |
| 35742 | 1193 int j, n_ifs; |
| 1194 asdl_seq *ifs; | |
| 1195 | |
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1196 n = CHILD(n, 4); |
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1197 n_ifs = count_comp_ifs(c, n); |
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1198 if (n_ifs == -1) |
| 35742 | 1199 return NULL; |
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1200 |
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1201 ifs = asdl_seq_new(n_ifs, c->c_arena); |
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1202 if (!ifs) |
| 35742 | 1203 return NULL; |
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1204 |
| 35742 | 1205 for (j = 0; j < n_ifs; j++) { |
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1206 REQ(n, comp_iter); |
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1207 n = CHILD(n, 0); |
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1208 REQ(n, comp_if); |
| 35742 | 1209 |
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1210 expression = ast_for_expr(c, CHILD(n, 1)); |
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1211 if (!expression) |
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1212 return NULL; |
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1213 asdl_seq_SET(ifs, j, expression); |
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1214 if (NCH(n) == 3) |
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1215 n = CHILD(n, 2); |
| 35742 | 1216 } |
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1217 /* on exit, must guarantee that n is a comp_for */ |
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1218 if (TYPE(n) == comp_iter) |
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1219 n = CHILD(n, 0); |
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1220 comp->ifs = ifs; |
| 35742 | 1221 } |
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1222 asdl_seq_SET(comps, i, comp); |
| 35742 | 1223 } |
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1224 return comps; |
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1225 } |
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1226 |
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1227 static expr_ty |
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1228 ast_for_itercomp(struct compiling *c, const node *n, int type) |
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1229 { |
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1230 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1231 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1232 expr_ty elt; |
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1233 asdl_seq *comps; |
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1234 |
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1235 assert(NCH(n) > 1); |
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1236 |
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1237 elt = ast_for_expr(c, CHILD(n, 0)); |
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1238 if (!elt) |
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1239 return NULL; |
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1240 |
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1241 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1242 if (!comps) |
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1243 return NULL; |
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1244 |
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1245 if (type == COMP_GENEXP) |
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1246 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1247 else if (type == COMP_LISTCOMP) |
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1248 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1249 else if (type == COMP_SETCOMP) |
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1250 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1251 else |
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1252 /* Should never happen */ |
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1253 return NULL; |
| 35742 | 1254 } |
| 1255 | |
| 1256 static expr_ty | |
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1257 ast_for_dictcomp(struct compiling *c, const node *n) |
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1258 { |
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1259 expr_ty key, value; |
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1260 asdl_seq *comps; |
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1261 |
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1262 assert(NCH(n) > 3); |
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1263 REQ(CHILD(n, 1), COLON); |
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1264 |
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1265 key = ast_for_expr(c, CHILD(n, 0)); |
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1266 if (!key) |
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1267 return NULL; |
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1268 |
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1269 value = ast_for_expr(c, CHILD(n, 2)); |
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1270 if (!value) |
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1271 return NULL; |
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1272 |
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1273 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1274 if (!comps) |
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1275 return NULL; |
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1276 |
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1277 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1278 } |
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1279 |
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1280 static expr_ty |
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1281 ast_for_genexp(struct compiling *c, const node *n) |
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1282 { |
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1283 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1284 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1285 } |
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1286 |
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1287 static expr_ty |
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1288 ast_for_listcomp(struct compiling *c, const node *n) |
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1289 { |
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1290 assert(TYPE(n) == (testlist_comp)); |
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1291 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1292 } |
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1293 |
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1294 static expr_ty |
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1295 ast_for_setcomp(struct compiling *c, const node *n) |
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1296 { |
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1297 assert(TYPE(n) == (dictorsetmaker)); |
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1298 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1299 } |
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1300 |
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1301 |
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1302 static expr_ty |
| 35742 | 1303 ast_for_atom(struct compiling *c, const node *n) |
| 1304 { | |
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1305 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1306 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
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1307 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1308 */ |
| 1309 node *ch = CHILD(n, 0); | |
| 40894 | 1310 int bytesmode = 0; |
| 35742 | 1311 |
| 1312 switch (TYPE(ch)) { | |
| 1313 case NAME: | |
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1314 /* All names start in Load context, but may later be |
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1315 changed. */ |
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1316 return Name(NEW_IDENTIFIER(ch), Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1317 case STRING: { |
| 40894 | 1318 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1319 if (!str) { |
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1320 if (PyErr_ExceptionMatches(PyExc_UnicodeError)) { |
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1321 PyObject *type, *value, *tback, *errstr; |
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1322 PyErr_Fetch(&type, &value, &tback); |
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1323 errstr = ((PyUnicodeErrorObject *)value)->reason; |
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1324 if (errstr) { |
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1325 char *s = ""; |
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1326 char buf[128]; |
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1327 s = _PyUnicode_AsString(errstr); |
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1328 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
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1329 ast_error(n, buf); |
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1330 } else { |
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1331 ast_error(n, "(unicode error) unknown error"); |
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1332 } |
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1333 Py_DECREF(type); |
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1334 Py_DECREF(value); |
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1335 Py_XDECREF(tback); |
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1336 } |
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1337 return NULL; |
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1338 } |
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1339 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1340 if (bytesmode) |
| 1341 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1342 else | |
| 1343 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1344 } |
| 1345 case NUMBER: { | |
|
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1346 PyObject *pynum = parsenumber(c, STR(ch)); |
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1347 if (!pynum) |
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1348 return NULL; |
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1349 |
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1350 PyArena_AddPyObject(c->c_arena, pynum); |
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1351 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1352 } |
|
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1353 case ELLIPSIS: /* Ellipsis */ |
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1354 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1355 case LPAR: /* some parenthesized expressions */ |
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1356 ch = CHILD(n, 1); |
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1357 |
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1358 if (TYPE(ch) == RPAR) |
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1359 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1360 |
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1361 if (TYPE(ch) == yield_expr) |
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1362 return ast_for_expr(c, ch); |
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1363 |
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1364 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
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1365 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
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1366 return ast_for_genexp(c, ch); |
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1367 |
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1368 return ast_for_testlist(c, ch); |
| 35742 | 1369 case LSQB: /* list (or list comprehension) */ |
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1370 ch = CHILD(n, 1); |
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1371 |
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1372 if (TYPE(ch) == RSQB) |
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1373 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1374 |
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1375 REQ(ch, testlist_comp); |
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1376 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
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1377 asdl_seq *elts = seq_for_testlist(c, ch); |
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1378 if (!elts) |
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1379 return NULL; |
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1380 |
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1381 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1382 } |
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1383 else |
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1384 return ast_for_listcomp(c, ch); |
| 35742 | 1385 case LBRACE: { |
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1386 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
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1387 * test (gen_for | (',' test)* [',']) */ |
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1388 int i, size; |
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1389 asdl_seq *keys, *values; |
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1390 |
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1391 ch = CHILD(n, 1); |
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1392 if (TYPE(ch) == RBRACE) { |
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1393 /* it's an empty dict */ |
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1394 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
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1395 } 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
|
1396 /* it's a simple set */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
parents:
41464
diff
changeset
|
1397 asdl_seq *elts; |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1398 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
|
1399 elts = asdl_seq_new(size, c->c_arena); |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1400 if (!elts) |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1401 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1402 for (i = 0; i < NCH(ch); i += 2) { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1403 expr_ty expression; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
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:
39678
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; |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1407 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
|
1408 } |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1409 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1410 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1411 /* it's a set comprehension */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1412 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
|
1413 } 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
|
1414 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
|
1415 } else { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1416 /* it's a dict */ |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1417 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
|
1418 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
|
1419 if (!keys) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1420 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1421 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1422 values = asdl_seq_new(size, c->c_arena); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1423 if (!values) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1424 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1425 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1426 for (i = 0; i < NCH(ch); i += 4) { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1427 expr_ty expression; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1428 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1429 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
|
1430 if (!expression) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1431 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
|
1432 |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1433 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
|
1434 |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1435 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1436 if (!expression) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1437 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1438 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1439 asdl_seq_SET(values, i / 4, expression); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1440 } |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1441 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1442 } |
| 35742 | 1443 } |
| 1444 default: | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1445 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1446 return NULL; |
| 35742 | 1447 } |
| 1448 } | |
| 1449 | |
| 1450 static slice_ty | |
| 1451 ast_for_slice(struct compiling *c, const node *n) | |
| 1452 { | |
| 1453 node *ch; | |
| 1454 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1455 | |
| 1456 REQ(n, subscript); | |
| 1457 | |
| 1458 /* | |
|
39783
7a0ad110e91e
Patch #1550786: ellipsis literal.
Georg Brandl <georg@python.org>
parents:
39782
diff
changeset
|
1459 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1460 sliceop: ':' [test] |
| 1461 */ | |
| 1462 ch = CHILD(n, 0); | |
| 1463 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1464 /* 'step' variable hold no significance in terms of being used over | |
| 1465 other vars */ | |
| 1466 step = ast_for_expr(c, ch); | |
| 1467 if (!step) | |
| 1468 return NULL; | |
| 1469 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1470 return Index(step, c->c_arena); |
| 35742 | 1471 } |
| 1472 | |
| 1473 if (TYPE(ch) == test) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1474 lower = ast_for_expr(c, ch); |
| 35742 | 1475 if (!lower) |
| 1476 return NULL; | |
| 1477 } | |
| 1478 | |
| 1479 /* If there's an upper bound it's in the second or third position. */ | |
| 1480 if (TYPE(ch) == COLON) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1481 if (NCH(n) > 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1482 node *n2 = CHILD(n, 1); |
| 35742 | 1483 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1484 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1485 upper = ast_for_expr(c, n2); |
| 35742 | 1486 if (!upper) |
| 1487 return NULL; | |
| 1488 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1489 } |
| 35742 | 1490 } else if (NCH(n) > 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1491 node *n2 = CHILD(n, 2); |
| 35742 | 1492 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1493 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1494 upper = ast_for_expr(c, n2); |
| 35742 | 1495 if (!upper) |
| 1496 return NULL; | |
| 1497 } | |
| 1498 } | |
| 1499 | |
| 1500 ch = CHILD(n, NCH(n) - 1); | |
| 1501 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
|
1502 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
|
1503 /* 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
|
1504 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
|
1505 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
|
1506 LINENO(ch), ch->n_col_offset, c->c_arena); |
| 35742 | 1507 if (!step) |
| 1508 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
|
1509 } else { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1510 ch = CHILD(ch, 1); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1511 if (TYPE(ch) == test) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1512 step = ast_for_expr(c, ch); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1513 if (!step) |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1514 return NULL; |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1515 } |
| 35742 | 1516 } |
| 1517 } | |
| 1518 | |
|
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
|
1519 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1520 } |
| 1521 | |
| 1522 static expr_ty | |
| 1523 ast_for_binop(struct compiling *c, const node *n) | |
| 1524 { | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
1525 /* Must account for a sequence of expressions. |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
1526 How should A op B op C by represented? |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
1527 BinOp(BinOp(A, op, B), op, C). |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
1528 */ |
| 35742 | 1529 |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
1530 int i, nops; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
1531 expr_ty expr1, expr2, result; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
1532 operator_ty newoperator; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
1533 |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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changeset
|
1534 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
1535 if (!expr1) |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
1536 return NULL; |
| 35742 | 1537 |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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changeset
|
1538 expr2 = ast_for_expr(c, CHILD(n, 2)); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
1539 if (!expr2) |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
1540 return NULL; |
|
06145fbc7ab9
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41509
diff
changeset
|
1541 |
|
06145fbc7ab9
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41509
diff
changeset
|
1542 newoperator = get_operator(CHILD(n, 1)); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
1543 if (!newoperator) |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
1544 return NULL; |
| 35742 | 1545 |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
1546 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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41509
diff
changeset
|
1547 c->c_arena); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
1548 if (!result) |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
1549 return NULL; |
| 35742 | 1550 |
|
41554
06145fbc7ab9
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|
1551 nops = (NCH(n) - 1) / 2; |
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1552 for (i = 1; i < nops; i++) { |
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1553 expr_ty tmp_result, tmp; |
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1554 const node* next_oper = CHILD(n, i * 2 + 1); |
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1555 |
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|
1556 newoperator = get_operator(next_oper); |
|
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1557 if (!newoperator) |
| 35742 | 1558 return NULL; |
| 1559 | |
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1560 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
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1561 if (!tmp) |
| 35742 | 1562 return NULL; |
| 1563 | |
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1564 tmp_result = BinOp(result, newoperator, tmp, |
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1565 LINENO(next_oper), next_oper->n_col_offset, |
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1566 c->c_arena); |
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1567 if (!tmp_result) |
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1568 return NULL; |
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1569 result = tmp_result; |
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1570 } |
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1571 return result; |
| 35742 | 1572 } |
| 1573 | |
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1574 static expr_ty |
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1575 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
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1576 { |
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1577 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
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1578 subscriptlist: subscript (',' subscript)* [','] |
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1579 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
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1580 */ |
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1581 REQ(n, trailer); |
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1582 if (TYPE(CHILD(n, 0)) == LPAR) { |
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1583 if (NCH(n) == 2) |
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1584 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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1585 n->n_col_offset, c->c_arena); |
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1586 else |
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1587 return ast_for_call(c, CHILD(n, 1), left_expr); |
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1588 } |
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1589 else if (TYPE(CHILD(n, 0)) == DOT ) { |
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1590 return Attribute(left_expr, NEW_IDENTIFIER(CHILD(n, 1)), Load, |
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1591 LINENO(n), n->n_col_offset, c->c_arena); |
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1592 } |
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1593 else { |
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1594 REQ(CHILD(n, 0), LSQB); |
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1595 REQ(CHILD(n, 2), RSQB); |
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1596 n = CHILD(n, 1); |
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1597 if (NCH(n) == 1) { |
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1598 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
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1599 if (!slc) |
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1600 return NULL; |
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1601 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
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1602 c->c_arena); |
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1603 } |
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1604 else { |
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1605 /* The grammar is ambiguous here. The ambiguity is resolved |
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1606 by treating the sequence as a tuple literal if there are |
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1607 no slice features. |
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1608 */ |
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1609 int j; |
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1610 slice_ty slc; |
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1611 expr_ty e; |
|
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1612 int simple = 1; |
|
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1613 asdl_seq *slices, *elts; |
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1614 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
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1615 if (!slices) |
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1616 return NULL; |
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1617 for (j = 0; j < NCH(n); j += 2) { |
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1618 slc = ast_for_slice(c, CHILD(n, j)); |
|
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1619 if (!slc) |
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1620 return NULL; |
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1621 if (slc->kind != Index_kind) |
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1622 simple = 0; |
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1623 asdl_seq_SET(slices, j / 2, slc); |
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1624 } |
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1625 if (!simple) { |
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1626 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
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1627 Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1628 } |
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1629 /* extract Index values and put them in a Tuple */ |
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1630 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
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1631 if (!elts) |
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1632 return NULL; |
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1633 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
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1634 slc = (slice_ty)asdl_seq_GET(slices, j); |
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1635 assert(slc->kind == Index_kind && slc->v.Index.value); |
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1636 asdl_seq_SET(elts, j, slc->v.Index.value); |
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1637 } |
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1638 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1639 if (!e) |
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1640 return NULL; |
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1641 return Subscript(left_expr, Index(e, c->c_arena), |
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1642 Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1643 } |
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1644 } |
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1645 } |
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1646 |
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1647 static expr_ty |
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1648 ast_for_factor(struct compiling *c, const node *n) |
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1649 { |
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1650 node *pfactor, *ppower, *patom, *pnum; |
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1651 expr_ty expression; |
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1652 |
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1653 /* If the unary - operator is applied to a constant, don't generate |
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1654 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
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1655 constant. The peephole optimizer already does something like |
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1656 this but it doesn't handle the case where the constant is |
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1657 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
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1658 PyLongObject. |
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1659 */ |
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1660 if (TYPE(CHILD(n, 0)) == MINUS |
|
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|
1661 && NCH(n) == 2 |
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|
1662 && TYPE((pfactor = CHILD(n, 1))) == factor |
|
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|
1663 && NCH(pfactor) == 1 |
|
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|
1664 && TYPE((ppower = CHILD(pfactor, 0))) == power |
|
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|
1665 && NCH(ppower) == 1 |
|
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|
1666 && TYPE((patom = CHILD(ppower, 0))) == atom |
|
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|
1667 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
|
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|
1668 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
|
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|
1669 if (s == NULL) |
|
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|
1670 return NULL; |
|
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|
1671 s[0] = '-'; |
|
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|
1672 strcpy(s + 1, STR(pnum)); |
|
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|
1673 PyObject_FREE(STR(pnum)); |
|
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|
1674 STR(pnum) = s; |
|
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|
1675 return ast_for_atom(c, patom); |
|
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|
1676 } |
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|
1677 |
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|
1678 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
1679 if (!expression) |
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|
1680 return NULL; |
|
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|
1681 |
|
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|
1682 switch (TYPE(CHILD(n, 0))) { |
|
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|
1683 case PLUS: |
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1684 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
|
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|
1685 c->c_arena); |
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|
1686 case MINUS: |
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1687 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
|
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1688 c->c_arena); |
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1689 case TILDE: |
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1690 return UnaryOp(Invert, expression, LINENO(n), |
|
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|
1691 n->n_col_offset, c->c_arena); |
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1692 } |
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1693 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
|
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|
1694 TYPE(CHILD(n, 0))); |
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|
1695 return NULL; |
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1696 } |
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1697 |
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|
1698 static expr_ty |
|
35799
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|
1699 ast_for_power(struct compiling *c, const node *n) |
|
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1700 { |
|
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|
1701 /* power: atom trailer* ('**' factor)* |
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1702 */ |
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|
1703 int i; |
|
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|
1704 expr_ty e, tmp; |
|
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|
1705 REQ(n, power); |
|
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|
1706 e = ast_for_atom(c, CHILD(n, 0)); |
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|
1707 if (!e) |
|
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|
1708 return NULL; |
|
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|
1709 if (NCH(n) == 1) |
|
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|
1710 return e; |
|
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|
1711 for (i = 1; i < NCH(n); i++) { |
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1712 node *ch = CHILD(n, i); |
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1713 if (TYPE(ch) != trailer) |
|
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|
1714 break; |
|
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|
1715 tmp = ast_for_trailer(c, ch, e); |
|
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|
1716 if (!tmp) |
|
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|
1717 return NULL; |
|
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1718 tmp->lineno = e->lineno; |
|
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1719 tmp->col_offset = e->col_offset; |
|
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|
1720 e = tmp; |
|
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1721 } |
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|
1722 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
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|
1723 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
36065
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|
1724 if (!f) |
|
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|
1725 return NULL; |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
36780
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|
1726 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
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|
1727 if (!tmp) |
|
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
1728 return NULL; |
|
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|
1729 e = tmp; |
|
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
1730 } |
|
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|
1731 return e; |
|
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
1732 } |
|
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|
1733 |
|
41699
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|
1734 static expr_ty |
|
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|
1735 ast_for_starred(struct compiling *c, const node *n) |
|
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|
1736 { |
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|
1737 expr_ty tmp; |
|
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|
1738 REQ(n, star_expr); |
|
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1739 |
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|
1740 tmp = ast_for_expr(c, CHILD(n, 1)); |
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|
1741 if (!tmp) |
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|
1742 return NULL; |
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|
1743 |
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|
1744 /* The Load context is changed later. */ |
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|
1745 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1746 } |
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|
1747 |
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|
1748 |
| 35742 | 1749 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1750 */ | |
| 1751 | |
| 1752 static expr_ty | |
| 1753 ast_for_expr(struct compiling *c, const node *n) | |
| 1754 { | |
| 1755 /* handle the full range of simple expressions | |
|
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Thomas Wouters <thomas@python.org>
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36444
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changeset
|
1756 test: or_test ['if' or_test 'else' test] | lambdef |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1757 test_nocond: or_test | lambdef_nocond |
|
36666
6165927431d6
PEP 308 implementation, including minor refdocs and some testcases. It
Thomas Wouters <thomas@python.org>
parents:
36444
diff
changeset
|
1758 or_test: and_test ('or' and_test)* |
| 35742 | 1759 and_test: not_test ('and' not_test)* |
| 1760 not_test: 'not' not_test | comparison | |
| 1761 comparison: expr (comp_op expr)* | |
| 1762 expr: xor_expr ('|' xor_expr)* | |
| 1763 xor_expr: and_expr ('^' and_expr)* | |
| 1764 and_expr: shift_expr ('&' shift_expr)* | |
| 1765 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1766 arith_expr: term (('+'|'-') term)* | |
| 1767 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1768 factor: ('+'|'-'|'~') factor | power | |
| 1769 power: atom trailer* ('**' factor)* | |
| 1770 */ | |
| 1771 | |
| 1772 asdl_seq *seq; | |
| 1773 int i; | |
| 1774 | |
| 1775 loop: | |
| 1776 switch (TYPE(n)) { | |
| 1777 case test: | |
|
41464
060c79f6d919
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Nick Coghlan <ncoghlan@gmail.com>
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diff
changeset
|
1778 case test_nocond: |
|
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changeset
|
1779 if (TYPE(CHILD(n, 0)) == lambdef || |
|
41464
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parents:
41235
diff
changeset
|
1780 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1781 return ast_for_lambdef(c, CHILD(n, 0)); |
|
36666
6165927431d6
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parents:
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diff
changeset
|
1782 else if (NCH(n) > 1) |
|
6165927431d6
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parents:
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changeset
|
1783 return ast_for_ifexpr(c, n); |
|
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|
1784 /* Fallthrough */ |
|
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|
1785 case or_test: |
| 35742 | 1786 case and_test: |
| 1787 if (NCH(n) == 1) { | |
| 1788 n = CHILD(n, 0); | |
| 1789 goto loop; | |
| 1790 } | |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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changeset
|
1791 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1792 if (!seq) |
| 1793 return NULL; | |
| 1794 for (i = 0; i < NCH(n); i += 2) { | |
| 1795 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1796 if (!e) | |
| 1797 return NULL; | |
| 1798 asdl_seq_SET(seq, i / 2, e); | |
| 1799 } | |
| 1800 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
|
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1801 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
|
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1802 c->c_arena); |
|
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1803 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
|
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1804 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1805 case not_test: |
| 1806 if (NCH(n) == 1) { | |
| 1807 n = CHILD(n, 0); | |
| 1808 goto loop; | |
| 1809 } | |
| 1810 else { | |
| 1811 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1812 if (!expression) | |
| 1813 return NULL; | |
| 1814 | |
|
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1815 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
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|
1816 c->c_arena); |
| 35742 | 1817 } |
| 1818 case comparison: | |
| 1819 if (NCH(n) == 1) { | |
| 1820 n = CHILD(n, 0); | |
| 1821 goto loop; | |
| 1822 } | |
| 1823 else { | |
| 1824 expr_ty expression; | |
|
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1825 asdl_int_seq *ops; |
|
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1826 asdl_seq *cmps; |
|
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1827 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1828 if (!ops) |
| 1829 return NULL; | |
|
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1830 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1831 if (!cmps) { |
| 1832 return NULL; | |
| 1833 } | |
| 1834 for (i = 1; i < NCH(n); i += 2) { | |
|
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1835 cmpop_ty newoperator; |
| 35742 | 1836 |
|
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1837 newoperator = ast_for_comp_op(c, CHILD(n, i)); |
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1838 if (!newoperator) { |
| 35742 | 1839 return NULL; |
|
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1840 } |
| 35742 | 1841 |
| 1842 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
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1843 if (!expression) { |
| 35742 | 1844 return NULL; |
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1845 } |
| 35742 | 1846 |
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1847 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1848 asdl_seq_SET(cmps, i / 2, expression); |
| 1849 } | |
| 1850 expression = ast_for_expr(c, CHILD(n, 0)); | |
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1851 if (!expression) { |
| 35742 | 1852 return NULL; |
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1853 } |
| 35742 | 1854 |
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1855 return Compare(expression, ops, cmps, LINENO(n), |
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1856 n->n_col_offset, c->c_arena); |
| 35742 | 1857 } |
| 1858 break; | |
| 1859 | |
|
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1860 case star_expr: |
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1861 if (TYPE(CHILD(n, 0)) == STAR) { |
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1862 return ast_for_starred(c, n); |
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1863 } |
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1864 /* Fallthrough */ |
| 35742 | 1865 /* The next five cases all handle BinOps. The main body of code |
| 1866 is the same in each case, but the switch turned inside out to | |
| 1867 reuse the code for each type of operator. | |
| 1868 */ | |
| 1869 case expr: | |
| 1870 case xor_expr: | |
| 1871 case and_expr: | |
| 1872 case shift_expr: | |
| 1873 case arith_expr: | |
| 1874 case term: | |
| 1875 if (NCH(n) == 1) { | |
| 1876 n = CHILD(n, 0); | |
| 1877 goto loop; | |
| 1878 } | |
| 1879 return ast_for_binop(c, n); | |
| 1880 case yield_expr: { | |
|
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1881 expr_ty exp = NULL; |
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1882 if (NCH(n) == 2) { |
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1883 exp = ast_for_testlist(c, CHILD(n, 1)); |
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1884 if (!exp) |
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1885 return NULL; |
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1886 } |
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1887 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
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1888 } |
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1889 case factor: |
| 35742 | 1890 if (NCH(n) == 1) { |
| 1891 n = CHILD(n, 0); | |
| 1892 goto loop; | |
| 1893 } | |
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1894 return ast_for_factor(c, n); |
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1895 case power: |
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1896 return ast_for_power(c, n); |
| 35742 | 1897 default: |
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1898 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1899 return NULL; |
| 1900 } | |
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1901 /* should never get here unless if error is set */ |
| 35742 | 1902 return NULL; |
| 1903 } | |
| 1904 | |
| 1905 static expr_ty | |
| 1906 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1907 { | |
| 1908 /* | |
| 1909 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1910 | '**' test) | |
|
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1911 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1912 */ |
| 1913 | |
| 1914 int i, nargs, nkeywords, ngens; | |
|
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1915 asdl_seq *args; |
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1916 asdl_seq *keywords; |
| 35742 | 1917 expr_ty vararg = NULL, kwarg = NULL; |
| 1918 | |
| 1919 REQ(n, arglist); | |
| 1920 | |
| 1921 nargs = 0; | |
| 1922 nkeywords = 0; | |
| 1923 ngens = 0; | |
| 1924 for (i = 0; i < NCH(n); i++) { | |
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1925 node *ch = CHILD(n, i); |
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1926 if (TYPE(ch) == argument) { |
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1927 if (NCH(ch) == 1) |
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1928 nargs++; |
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1929 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1930 ngens++; |
| 35742 | 1931 else |
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1932 nkeywords++; |
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1933 } |
| 35742 | 1934 } |
| 1935 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
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1936 ast_error(n, "Generator expression must be parenthesized " |
|
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1937 "if not sole argument"); |
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1938 return NULL; |
| 35742 | 1939 } |
| 1940 | |
| 1941 if (nargs + nkeywords + ngens > 255) { | |
| 1942 ast_error(n, "more than 255 arguments"); | |
| 1943 return NULL; | |
| 1944 } | |
| 1945 | |
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1946 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1947 if (!args) |
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1948 return NULL; |
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1949 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1950 if (!keywords) |
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1951 return NULL; |
| 35742 | 1952 nargs = 0; |
| 1953 nkeywords = 0; | |
| 1954 for (i = 0; i < NCH(n); i++) { | |
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1955 node *ch = CHILD(n, i); |
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1956 if (TYPE(ch) == argument) { |
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1957 expr_ty e; |
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1958 if (NCH(ch) == 1) { |
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1959 if (nkeywords) { |
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1960 ast_error(CHILD(ch, 0), |
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1961 "non-keyword arg after keyword arg"); |
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1962 return NULL; |
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1963 } |
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1964 if (vararg) { |
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1965 ast_error(CHILD(ch, 0), |
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1966 "only named arguments may follow *expression"); |
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1967 return NULL; |
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1968 } |
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1969 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1970 if (!e) |
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1971 return NULL; |
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1972 asdl_seq_SET(args, nargs++, e); |
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1973 } |
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1974 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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1975 e = ast_for_genexp(c, ch); |
| 35742 | 1976 if (!e) |
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1977 return NULL; |
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1978 asdl_seq_SET(args, nargs++, e); |
| 35742 | 1979 } |
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1980 else { |
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1981 keyword_ty kw; |
|
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1982 identifier key, tmp; |
|
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1983 int k; |
| 35742 | 1984 |
|
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1985 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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1986 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1987 if (!e) |
|
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1988 return NULL; |
| 35742 | 1989 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1990 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 1991 * SF bug 132313 points out that complaining about a keyword | |
| 1992 * then is very confusing. | |
| 1993 */ | |
| 1994 if (e->kind == Lambda_kind) { | |
| 1995 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
|
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1996 return NULL; |
| 35742 | 1997 } else if (e->kind != Name_kind) { |
| 1998 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
|
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1999 return NULL; |
|
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2000 } else if (forbidden_name(e, ch)) { |
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2001 return NULL; |
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2002 } |
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2003 key = e->v.Name.id; |
|
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2004 for (k = 0; k < nkeywords; k++) { |
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2005 tmp = ((keyword_ty)asdl_seq_GET(keywords, k))->arg; |
|
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2006 if (!PyUnicode_Compare(tmp, key)) { |
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2007 ast_error(CHILD(ch, 0), "keyword argument repeated"); |
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2008 return NULL; |
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2009 } |
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2010 } |
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2011 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 2012 if (!e) |
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2013 return NULL; |
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2014 kw = keyword(key, e, c->c_arena); |
| 35742 | 2015 if (!kw) |
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2016 return NULL; |
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2017 asdl_seq_SET(keywords, nkeywords++, kw); |
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2018 } |
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2019 } |
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2020 else if (TYPE(ch) == STAR) { |
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2021 vararg = ast_for_expr(c, CHILD(n, i+1)); |
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2022 if (!vararg) |
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2023 return NULL; |
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2024 i++; |
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2025 } |
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2026 else if (TYPE(ch) == DOUBLESTAR) { |
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2027 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
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2028 if (!kwarg) |
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2029 return NULL; |
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2030 i++; |
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2031 } |
| 35742 | 2032 } |
| 2033 | |
|
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2034 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 2035 } |
| 2036 | |
| 2037 static expr_ty | |
|
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|
2038 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 2039 { |
|
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2040 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
|
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2041 /* testlist: test (',' test)* [','] */ |
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2042 /* testlist1: test (',' test)* */ |
| 35742 | 2043 assert(NCH(n) > 0); |
|
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2044 if (TYPE(n) == testlist_comp) { |
|
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2045 if (NCH(n) > 1) |
|
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2046 assert(TYPE(CHILD(n, 1)) != comp_for); |
|
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2047 } |
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2048 else { |
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|
2049 assert(TYPE(n) == testlist || |
|
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2050 TYPE(n) == testlist1); |
|
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2051 } |
| 35742 | 2052 if (NCH(n) == 1) |
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2053 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 2054 else { |
| 2055 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 2056 if (!tmp) | |
| 2057 return NULL; | |
|
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2058 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2059 } |
|
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|
2060 } |
|
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|
2061 |
| 35742 | 2062 static stmt_ty |
| 2063 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2064 { | |
| 2065 REQ(n, expr_stmt); | |
| 2066 /* expr_stmt: testlist (augassign (yield_expr|testlist) | |
| 2067 | ('=' (yield_expr|testlist))*) | |
| 2068 testlist: test (',' test)* [','] | |
| 2069 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | |
|
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2070 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2071 test: ... here starts the operator precendence dance |
| 2072 */ | |
| 2073 | |
| 2074 if (NCH(n) == 1) { | |
|
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2075 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2076 if (!e) |
| 2077 return NULL; | |
| 2078 | |
|
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2079 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2080 } |
| 2081 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2082 expr_ty expr1, expr2; | |
|
37879
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|
2083 operator_ty newoperator; |
|
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2084 node *ch = CHILD(n, 0); |
| 35742 | 2085 |
|
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2086 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2087 if (!expr1) |
| 2088 return NULL; | |
|
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2089 /* TODO(nas): Remove duplicated error checks (set_context does it) */ |
|
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2090 switch (expr1->kind) { |
|
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|
2091 case GeneratorExp_kind: |
|
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|
2092 ast_error(ch, "augmented assignment to generator " |
|
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Improved handling of syntax errors.
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|
2093 "expression not possible"); |
|
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|
2094 return NULL; |
|
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|
2095 case Yield_kind: |
|
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|
2096 ast_error(ch, "augmented assignment to yield " |
|
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|
2097 "expression not possible"); |
|
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|
2098 return NULL; |
|
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|
2099 case Name_kind: { |
|
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2100 if (forbidden_name(expr1, ch)) |
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|
2101 return NULL; |
|
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|
2102 break; |
|
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|
2103 } |
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|
2104 case Attribute_kind: |
|
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|
2105 case Subscript_kind: |
|
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|
2106 break; |
|
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|
2107 default: |
|
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|
2108 ast_error(ch, "illegal expression for augmented " |
|
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|
2109 "assignment"); |
|
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|
2110 return NULL; |
| 35742 | 2111 } |
|
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2112 if(!set_context(c, expr1, Store, ch)) |
|
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|
2113 return NULL; |
| 35742 | 2114 |
|
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2115 ch = CHILD(n, 2); |
|
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2116 if (TYPE(ch) == testlist) |
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|
2117 expr2 = ast_for_testlist(c, ch); |
|
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|
2118 else |
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|
2119 expr2 = ast_for_expr(c, ch); |
|
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|
2120 if (!expr2) |
| 35742 | 2121 return NULL; |
| 2122 | |
|
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parents:
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diff
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|
2123 newoperator = ast_for_augassign(c, CHILD(n, 1)); |
|
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2124 if (!newoperator) |
| 35742 | 2125 return NULL; |
| 2126 | |
|
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2127 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2128 } |
| 2129 else { | |
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2130 int i; |
|
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2131 asdl_seq *targets; |
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2132 node *value; |
| 35742 | 2133 expr_ty expression; |
| 2134 | |
|
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2135 /* a normal assignment */ |
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2136 REQ(CHILD(n, 1), EQUAL); |
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2137 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
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2138 if (!targets) |
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2139 return NULL; |
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2140 for (i = 0; i < NCH(n) - 2; i += 2) { |
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2141 expr_ty e; |
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2142 node *ch = CHILD(n, i); |
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2143 if (TYPE(ch) == yield_expr) { |
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2144 ast_error(ch, "assignment to yield expression not possible"); |
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2145 return NULL; |
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2146 } |
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2147 e = ast_for_testlist(c, ch); |
| 35742 | 2148 |
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2149 /* set context to assign */ |
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2150 if (!e) |
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2151 return NULL; |
| 35742 | 2152 |
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2153 if (!set_context(c, e, Store, CHILD(n, i))) |
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2154 return NULL; |
| 35742 | 2155 |
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2156 asdl_seq_SET(targets, i / 2, e); |
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2157 } |
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2158 value = CHILD(n, NCH(n) - 1); |
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2159 if (TYPE(value) == testlist) |
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2160 expression = ast_for_testlist(c, value); |
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2161 else |
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2162 expression = ast_for_expr(c, value); |
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2163 if (!expression) |
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2164 return NULL; |
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2165 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2166 } |
| 2167 } | |
| 2168 | |
| 2169 static asdl_seq * | |
|
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parents:
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2170 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2171 { |
| 2172 asdl_seq *seq; | |
| 2173 int i; | |
| 2174 expr_ty e; | |
| 2175 | |
| 2176 REQ(n, exprlist); | |
| 2177 | |
|
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2178 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2179 if (!seq) |
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2180 return NULL; |
| 35742 | 2181 for (i = 0; i < NCH(n); i += 2) { |
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2182 e = ast_for_expr(c, CHILD(n, i)); |
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2183 if (!e) |
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2184 return NULL; |
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2185 asdl_seq_SET(seq, i / 2, e); |
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2186 if (context && !set_context(c, e, context, CHILD(n, i))) |
|
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2187 return NULL; |
| 35742 | 2188 } |
| 2189 return seq; | |
| 2190 } | |
| 2191 | |
| 2192 static stmt_ty | |
| 2193 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2194 { | |
| 2195 asdl_seq *expr_list; | |
| 2196 | |
| 2197 /* del_stmt: 'del' exprlist */ | |
| 2198 REQ(n, del_stmt); | |
| 2199 | |
| 2200 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2201 if (!expr_list) | |
| 2202 return NULL; | |
|
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2203 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2204 } |
| 2205 | |
| 2206 static stmt_ty | |
| 2207 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2208 { | |
| 2209 /* | |
| 2210 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2211 | yield_stmt | |
| 2212 break_stmt: 'break' | |
| 2213 continue_stmt: 'continue' | |
| 2214 return_stmt: 'return' [testlist] | |
| 2215 yield_stmt: yield_expr | |
| 2216 yield_expr: 'yield' testlist | |
| 2217 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2218 */ | |
| 2219 node *ch; | |
| 2220 | |
| 2221 REQ(n, flow_stmt); | |
| 2222 ch = CHILD(n, 0); | |
| 2223 switch (TYPE(ch)) { | |
| 2224 case break_stmt: | |
|
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2225 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2226 case continue_stmt: |
|
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2227 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2228 case yield_stmt: { /* will reduce to yield_expr */ |
|
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2229 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); |
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2230 if (!exp) |
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2231 return NULL; |
|
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2232 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2233 } |
| 2234 case return_stmt: | |
| 2235 if (NCH(ch) == 1) | |
|
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changeset
|
2236 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2237 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
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parents:
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|
2238 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2239 if (!expression) |
| 2240 return NULL; | |
|
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diff
changeset
|
2241 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2242 } |
| 2243 case raise_stmt: | |
| 2244 if (NCH(ch) == 1) | |
|
43102
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2245 return Raise(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
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changeset
|
2246 else if (NCH(ch) >= 2) { |
|
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changeset
|
2247 expr_ty cause = NULL; |
| 35742 | 2248 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); |
| 2249 if (!expression) | |
| 2250 return NULL; | |
|
43102
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2251 if (NCH(ch) == 4) { |
|
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diff
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|
2252 cause = ast_for_expr(c, CHILD(ch, 3)); |
|
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|
2253 if (!cause) |
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|
2254 return NULL; |
|
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|
2255 } |
|
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|
2256 return Raise(expression, cause, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2257 } |
| 2258 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
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35868
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|
2259 PyErr_Format(PyExc_SystemError, |
| 35742 | 2260 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2261 return NULL; | |
| 2262 } | |
|
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|
2263 |
|
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changeset
|
2264 PyErr_SetString(PyExc_SystemError, "unhandled flow statement"); |
|
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Cleanup a bit and make things more consistent.
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|
2265 return NULL; |
| 35742 | 2266 } |
| 2267 | |
| 2268 static alias_ty | |
|
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Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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parents:
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diff
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|
2269 alias_for_import_name(struct compiling *c, const node *n) |
| 35742 | 2270 { |
| 2271 /* | |
|
36742
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
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diff
changeset
|
2272 import_as_name: NAME ['as' NAME] |
|
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
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|
2273 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2274 dotted_name: NAME ('.' NAME)* |
| 2275 */ | |
|
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|
2276 PyObject *str; |
|
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changeset
|
2277 |
| 35742 | 2278 loop: |
| 2279 switch (TYPE(n)) { | |
| 2280 case import_as_name: | |
|
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changeset
|
2281 str = NULL; |
|
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|
2282 if (NCH(n) == 3) { |
|
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changeset
|
2283 str = NEW_IDENTIFIER(CHILD(n, 2)); |
|
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|
2284 } |
|
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|
2285 return alias(NEW_IDENTIFIER(CHILD(n, 0)), str, c->c_arena); |
| 35742 | 2286 case dotted_as_name: |
| 2287 if (NCH(n) == 1) { | |
| 2288 n = CHILD(n, 0); | |
| 2289 goto loop; | |
| 2290 } | |
| 2291 else { | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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changeset
|
2292 alias_ty a = alias_for_import_name(c, CHILD(n, 0)); |
|
39610
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
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parents:
39442
diff
changeset
|
2293 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2294 return NULL; |
| 35742 | 2295 assert(!a->asname); |
| 2296 a->asname = NEW_IDENTIFIER(CHILD(n, 2)); | |
| 2297 return a; | |
| 2298 } | |
| 2299 break; | |
| 2300 case dotted_name: | |
| 2301 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
|
2302 return alias(NEW_IDENTIFIER(CHILD(n, 0)), NULL, c->c_arena); |
| 35742 | 2303 else { |
| 2304 /* 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
|
2305 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2306 size_t len; |
| 35742 | 2307 char *s; |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2308 PyObject *uni; |
| 35742 | 2309 |
| 2310 len = 0; | |
| 2311 for (i = 0; i < NCH(n); i += 2) | |
| 2312 /* length of string plus one for the dot */ | |
| 2313 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2314 len--; /* the last name doesn't have a dot */ | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2315 str = PyBytes_FromStringAndSize(NULL, len); |
| 35742 | 2316 if (!str) |
| 2317 return NULL; | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2318 s = PyBytes_AS_STRING(str); |
| 35742 | 2319 if (!s) |
| 2320 return NULL; | |
| 2321 for (i = 0; i < NCH(n); i += 2) { | |
| 2322 char *sch = STR(CHILD(n, i)); | |
| 2323 strcpy(s, STR(CHILD(n, i))); | |
| 2324 s += strlen(sch); | |
| 2325 *s++ = '.'; | |
| 2326 } | |
| 2327 --s; | |
| 2328 *s = '\0'; | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2329 uni = PyUnicode_DecodeUTF8(PyBytes_AS_STRING(str), |
|
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2330 PyBytes_GET_SIZE(str), |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2331 NULL); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2332 Py_DECREF(str); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2333 if (!uni) |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2334 return NULL; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2335 str = uni; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2336 PyUnicode_InternInPlace(&str); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2337 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
|
2338 return alias(str, NULL, c->c_arena); |
| 35742 | 2339 } |
| 2340 break; | |
| 2341 case STAR: | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2342 str = PyUnicode_InternFromString("*"); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2343 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
|
2344 return alias(str, NULL, c->c_arena); |
| 35742 | 2345 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2346 PyErr_Format(PyExc_SystemError, |
| 35742 | 2347 "unexpected import name: %d", TYPE(n)); |
| 2348 return NULL; | |
| 2349 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2350 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2351 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2352 return NULL; |
| 2353 } | |
| 2354 | |
| 2355 static stmt_ty | |
| 2356 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2357 { | |
| 2358 /* | |
| 2359 import_stmt: import_name | import_from | |
| 2360 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
|
2361 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
|
2362 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2363 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2364 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2365 int col_offset; |
| 35742 | 2366 int i; |
| 2367 asdl_seq *aliases; | |
| 2368 | |
| 2369 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
|
2370 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2371 col_offset = n->n_col_offset; |
| 35742 | 2372 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2373 if (TYPE(n) == import_name) { |
| 35742 | 2374 n = CHILD(n, 1); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2375 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2376 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
|
2377 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2378 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2379 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
|
2380 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
|
2381 if (!import_alias) |
| 35742 | 2382 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2383 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2384 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2385 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2386 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2387 else if (TYPE(n) == import_from) { |
| 35742 | 2388 int n_children; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2389 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2390 alias_ty mod = NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2391 identifier modname; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2392 |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2393 /* 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
|
2394 optional module name */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2395 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
|
2396 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
|
2397 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
|
2398 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2399 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2400 } 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
|
2401 /* 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
|
2402 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2403 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2404 } 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
|
2405 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2406 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2407 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2408 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2409 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
|
2410 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2411 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2412 /* from ... import * */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2413 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2414 n_children = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2415 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2416 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2417 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2418 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2419 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2420 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2421 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2422 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2423 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2424 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2425 if (n_children % 2 == 0) { |
| 35742 | 2426 ast_error(n, "trailing comma not allowed without" |
| 2427 " surrounding parentheses"); | |
| 2428 return NULL; | |
| 2429 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2430 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2431 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2432 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
|
2433 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2434 } |
| 35742 | 2435 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2436 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
|
2437 if (!aliases) |
| 35742 | 2438 return NULL; |
| 2439 | |
| 2440 /* 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
|
2441 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
|
2442 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
|
2443 if (!import_alias) |
| 35742 | 2444 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2445 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2446 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2447 else { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2448 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
|
2449 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
|
2450 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2451 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2452 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
|
2453 } |
| 35742 | 2454 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2455 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2456 modname = mod->name; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2457 else |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2458 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
|
2459 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
|
2460 c->c_arena); |
| 35742 | 2461 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2462 PyErr_Format(PyExc_SystemError, |
| 35742 | 2463 "unknown import statement: starts with command '%s'", |
| 2464 STR(CHILD(n, 0))); | |
| 2465 return NULL; | |
| 2466 } | |
| 2467 | |
| 2468 static stmt_ty | |
| 2469 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2470 { | |
| 2471 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2472 identifier name; | |
| 2473 asdl_seq *s; | |
| 2474 int i; | |
| 2475 | |
| 2476 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
|
2477 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2478 if (!s) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2479 return NULL; |
| 35742 | 2480 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
|
2481 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
|
2482 if (!name) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2483 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2484 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2485 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2486 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2487 } |
| 2488 | |
| 2489 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2490 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
|
2491 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2492 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2493 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2494 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2495 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2496 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2497 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2498 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
|
2499 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2500 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2501 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2502 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2503 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2504 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2505 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2506 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2507 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
|
2508 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2509 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2510 static stmt_ty |
| 35742 | 2511 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2512 { | |
| 2513 /* assert_stmt: 'assert' test [',' test] */ | |
| 2514 REQ(n, assert_stmt); | |
| 2515 if (NCH(n) == 2) { | |
| 2516 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2517 if (!expression) | |
| 2518 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2519 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2520 } |
| 2521 else if (NCH(n) == 4) { | |
| 2522 expr_ty expr1, expr2; | |
| 2523 | |
| 2524 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2525 if (!expr1) | |
| 2526 return NULL; | |
| 2527 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2528 if (!expr2) | |
| 2529 return NULL; | |
| 2530 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2531 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2532 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2533 PyErr_Format(PyExc_SystemError, |
| 35742 | 2534 "improper number of parts to 'assert' statement: %d", |
| 2535 NCH(n)); | |
| 2536 return NULL; | |
| 2537 } | |
| 2538 | |
| 2539 static asdl_seq * | |
| 2540 ast_for_suite(struct compiling *c, const node *n) | |
| 2541 { | |
| 2542 /* 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
|
2543 asdl_seq *seq; |
| 35742 | 2544 stmt_ty s; |
| 2545 int i, total, num, end, pos = 0; | |
| 2546 node *ch; | |
| 2547 | |
| 2548 REQ(n, suite); | |
| 2549 | |
| 2550 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
|
2551 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2552 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2553 return NULL; |
| 35742 | 2554 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
|
2555 n = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2556 /* 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
|
2557 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
|
2558 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2559 end = NCH(n) - 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2560 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
|
2561 end--; |
| 35742 | 2562 /* 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
|
2563 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
|
2564 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2565 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
|
2566 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2567 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2568 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
|
2569 } |
| 35742 | 2570 } |
| 2571 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2572 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
|
2573 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2574 REQ(ch, stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2575 num = num_stmts(ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2576 if (num == 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2577 /* 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
|
2578 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
|
2579 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2580 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2581 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
|
2582 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2583 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2584 int j; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2585 ch = CHILD(ch, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2586 REQ(ch, simple_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2587 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
|
2588 /* 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
|
2589 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
|
2590 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2591 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2592 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2593 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
|
2594 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2595 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2596 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
|
2597 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2598 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2599 } |
| 35742 | 2600 } |
| 2601 assert(pos == seq->size); | |
| 2602 return seq; | |
| 2603 } | |
| 2604 | |
| 2605 static stmt_ty | |
| 2606 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2607 { | |
| 2608 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2609 ['else' ':' suite] | |
| 2610 */ | |
| 2611 char *s; | |
| 2612 | |
| 2613 REQ(n, if_stmt); | |
| 2614 | |
| 2615 if (NCH(n) == 4) { | |
| 2616 expr_ty expression; | |
| 2617 asdl_seq *suite_seq; | |
| 2618 | |
| 2619 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2620 if (!expression) | |
| 2621 return NULL; | |
| 2622 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
|
2623 if (!suite_seq) |
| 35742 | 2624 return NULL; |
| 2625 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2626 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
|
2627 c->c_arena); |
| 35742 | 2628 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2629 |
| 35742 | 2630 s = STR(CHILD(n, 4)); |
| 2631 /* s[2], the third character in the string, will be | |
| 2632 's' for el_s_e, or | |
| 2633 'i' for el_i_f | |
| 2634 */ | |
| 2635 if (s[2] == 's') { | |
| 2636 expr_ty expression; | |
| 2637 asdl_seq *seq1, *seq2; | |
| 2638 | |
| 2639 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2640 if (!expression) | |
| 2641 return NULL; | |
| 2642 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
|
2643 if (!seq1) |
| 35742 | 2644 return NULL; |
| 2645 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
|
2646 if (!seq2) |
| 35742 | 2647 return NULL; |
| 2648 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2649 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
|
2650 c->c_arena); |
| 35742 | 2651 } |
| 2652 else if (s[2] == 'i') { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
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|
2653 int i, n_elif, has_else = 0; |
|
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|
2654 expr_ty expression; |
|
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|
2655 asdl_seq *suite_seq; |
|
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2656 asdl_seq *orelse = NULL; |
|
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2657 n_elif = NCH(n) - 4; |
| 35742 | 2658 /* must reference the child n_elif+1 since 'else' token is third, |
| 2659 not fourth, child from the end. */ | |
|
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2660 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
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|
2661 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
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2662 has_else = 1; |
|
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2663 n_elif -= 3; |
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2664 } |
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2665 n_elif /= 4; |
| 35742 | 2666 |
|
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|
2667 if (has_else) { |
|
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|
2668 asdl_seq *suite_seq2; |
| 35742 | 2669 |
|
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2670 orelse = asdl_seq_new(1, c->c_arena); |
|
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|
2671 if (!orelse) |
|
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2672 return NULL; |
| 35742 | 2673 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
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|
2674 if (!expression) |
| 35742 | 2675 return NULL; |
|
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2676 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
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2677 if (!suite_seq) |
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2678 return NULL; |
|
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|
2679 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
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2680 if (!suite_seq2) |
| 35742 | 2681 return NULL; |
| 2682 | |
|
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|
2683 asdl_seq_SET(orelse, 0, |
|
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2684 If(expression, suite_seq, suite_seq2, |
|
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2685 LINENO(CHILD(n, NCH(n) - 6)), |
|
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2686 CHILD(n, NCH(n) - 6)->n_col_offset, |
|
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2687 c->c_arena)); |
|
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2688 /* the just-created orelse handled the last elif */ |
|
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2689 n_elif--; |
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2690 } |
| 35742 | 2691 |
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|
2692 for (i = 0; i < n_elif; i++) { |
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2693 int off = 5 + (n_elif - i - 1) * 4; |
|
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2694 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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2695 if (!newobj) |
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|
2696 return NULL; |
| 35742 | 2697 expression = ast_for_expr(c, CHILD(n, off)); |
|
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|
2698 if (!expression) |
| 35742 | 2699 return NULL; |
| 2700 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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|
2701 if (!suite_seq) |
| 35742 | 2702 return NULL; |
| 2703 | |
|
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2704 asdl_seq_SET(newobj, 0, |
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2705 If(expression, suite_seq, orelse, |
|
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|
2706 LINENO(CHILD(n, off)), |
|
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|
2707 CHILD(n, off)->n_col_offset, c->c_arena)); |
|
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2708 orelse = newobj; |
|
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|
2709 } |
|
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|
2710 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
2711 if (!expression) |
|
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|
2712 return NULL; |
|
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2713 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
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2714 if (!suite_seq) |
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2715 return NULL; |
|
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2716 return If(expression, suite_seq, orelse, |
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|
2717 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2718 } |
|
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2719 |
|
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2720 PyErr_Format(PyExc_SystemError, |
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|
2721 "unexpected token in 'if' statement: %s", s); |
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2722 return NULL; |
| 35742 | 2723 } |
| 2724 | |
| 2725 static stmt_ty | |
| 2726 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2727 { | |
| 2728 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2729 REQ(n, while_stmt); | |
| 2730 | |
| 2731 if (NCH(n) == 4) { | |
| 2732 expr_ty expression; | |
| 2733 asdl_seq *suite_seq; | |
| 2734 | |
| 2735 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2736 if (!expression) | |
| 2737 return NULL; | |
| 2738 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2739 if (!suite_seq) |
| 35742 | 2740 return NULL; |
|
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|
2741 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2742 } |
| 2743 else if (NCH(n) == 7) { | |
| 2744 expr_ty expression; | |
| 2745 asdl_seq *seq1, *seq2; | |
| 2746 | |
| 2747 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2748 if (!expression) | |
| 2749 return NULL; | |
| 2750 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2751 if (!seq1) |
| 35742 | 2752 return NULL; |
| 2753 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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|
2754 if (!seq2) |
| 35742 | 2755 return NULL; |
| 2756 | |
|
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|
2757 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2758 } |
|
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|
2759 |
|
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changeset
|
2760 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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diff
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|
2761 "wrong number of tokens for 'while' statement: %d", |
|
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|
2762 NCH(n)); |
|
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Cleanup a bit and make things more consistent.
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|
2763 return NULL; |
| 35742 | 2764 } |
| 2765 | |
| 2766 static stmt_ty | |
| 2767 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2768 { | |
|
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|
2769 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2770 expr_ty expression; |
| 2771 expr_ty target; | |
|
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|
2772 const node *node_target; |
| 35742 | 2773 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2774 REQ(n, for_stmt); | |
| 2775 | |
| 2776 if (NCH(n) == 9) { | |
|
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|
2777 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2778 if (!seq) |
| 2779 return NULL; | |
| 2780 } | |
| 2781 | |
|
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|
2782 node_target = CHILD(n, 1); |
|
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|
2783 _target = ast_for_exprlist(c, node_target, Store); |
|
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|
2784 if (!_target) |
| 35742 | 2785 return NULL; |
|
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|
2786 /* Check the # of children rather than the length of _target, since |
|
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|
2787 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2788 if (NCH(node_target) == 1) |
|
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|
2789 target = (expr_ty)asdl_seq_GET(_target, 0); |
| 35742 | 2790 else |
|
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|
2791 target = Tuple(_target, Store, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2792 |
|
35798
857f68fba275
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
2793 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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|
2794 if (!expression) |
| 35742 | 2795 return NULL; |
| 2796 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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|
2797 if (!suite_seq) |
| 35742 | 2798 return NULL; |
| 2799 | |
|
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|
2800 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
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changeset
|
2801 c->c_arena); |
| 35742 | 2802 } |
| 2803 | |
| 2804 static excepthandler_ty | |
| 2805 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2806 { | |
|
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|
2807 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2808 REQ(exc, except_clause); |
| 2809 REQ(body, suite); | |
| 2810 | |
| 2811 if (NCH(exc) == 1) { | |
| 2812 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2813 if (!suite_seq) | |
| 2814 return NULL; | |
| 2815 | |
|
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|
2816 return ExceptHandler(NULL, NULL, suite_seq, LINENO(exc), |
|
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changeset
|
2817 exc->n_col_offset, c->c_arena); |
| 35742 | 2818 } |
| 2819 else if (NCH(exc) == 2) { | |
| 2820 expr_ty expression; | |
| 2821 asdl_seq *suite_seq; | |
| 2822 | |
| 2823 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2824 if (!expression) | |
| 2825 return NULL; | |
| 2826 suite_seq = ast_for_suite(c, body); | |
|
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|
2827 if (!suite_seq) |
| 35742 | 2828 return NULL; |
| 2829 | |
|
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|
2830 return ExceptHandler(expression, NULL, suite_seq, LINENO(exc), |
|
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f731859e9b3b
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Thomas Wouters <thomas@python.org>
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|
2831 exc->n_col_offset, c->c_arena); |
| 35742 | 2832 } |
| 2833 else if (NCH(exc) == 4) { | |
| 2834 asdl_seq *suite_seq; | |
| 2835 expr_ty expression; | |
|
40588
4bab65fcca8e
Some more changes related to the new except syntax and semantics,
Guido van Rossum <guido@python.org>
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40529
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changeset
|
2836 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2837 if (!e) |
| 35742 | 2838 return NULL; |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2839 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2840 if (!expression) |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2841 return NULL; |
| 35742 | 2842 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
|
2843 if (!suite_seq) |
| 35742 | 2844 return NULL; |
| 2845 | |
|
46231
81ee270a6eb5
Merged revisions 62047 via svnmerge from
Neal Norwitz <nnorwitz@gmail.com>
parents:
46120
diff
changeset
|
2846 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
|
2847 exc->n_col_offset, c->c_arena); |
| 35742 | 2848 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2849 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2850 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2851 "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
|
2852 NCH(exc)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2853 return NULL; |
| 35742 | 2854 } |
| 2855 | |
| 2856 static stmt_ty | |
| 2857 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2858 { | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2859 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
|
2860 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
|
2861 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
|
2862 |
| 35742 | 2863 REQ(n, try_stmt); |
| 2864 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2865 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
|
2866 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
|
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 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
|
2870 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
|
2871 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
|
2872 /* 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
|
2873 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
|
2874 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
|
2875 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
|
2876 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
|
2877 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2878 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2879 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2880 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2881 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
|
2882 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
|
2883 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2884 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2885 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2886 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2887 /* 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
|
2888 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
|
2889 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
|
2890 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
|
2891 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2892 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2893 } |
| 35742 | 2894 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2895 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
|
2896 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2897 return NULL; |
| 2898 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2899 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2900 if (n_except > 0) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2901 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2902 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
|
2903 /* 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
|
2904 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
|
2905 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
|
2906 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2907 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2908 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
|
2909 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
|
2910 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
|
2911 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2912 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2913 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
|
2914 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2915 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2916 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
|
2917 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
|
2918 if (!finally) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2919 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
|
2920 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2921 /* 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
|
2922 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
|
2923 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
|
2924 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2925 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2926 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
|
2927 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2928 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2929 /* 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
|
2930 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
|
2931 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2932 } |
| 2933 | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2934 static expr_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2935 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
|
2936 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2937 REQ(n, with_var); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2938 return ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2939 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2940 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2941 /* with_stmt: 'with' test [ with_var ] ':' suite */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2942 static stmt_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2943 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
|
2944 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2945 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2946 int suite_index = 3; /* skip 'with', test, and ':' */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2947 asdl_seq *suite_seq; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2948 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2949 assert(TYPE(n) == with_stmt); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2950 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
|
2951 if (TYPE(CHILD(n, 2)) == with_var) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2952 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
|
2953 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2954 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2955 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2956 } |
|
46664
031dfe455585
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Christian Heimes <christian@cheimes.de>
parents:
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diff
changeset
|
2957 if (!set_context(c, optional_vars, Store, n)) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2958 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2959 } |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2960 suite_index = 4; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2961 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2962 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2963 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
|
2964 if (!suite_seq) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2965 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2966 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2967 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
|
2968 n->n_col_offset, c->c_arena); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2969 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2970 |
| 35742 | 2971 static stmt_ty |
|
41824
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Guido van Rossum <guido@python.org>
parents:
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changeset
|
2972 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 2973 { |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2974 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2975 asdl_seq *s; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2976 expr_ty call, dummy; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2977 |
| 35742 | 2978 REQ(n, classdef); |
| 2979 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2980 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 2981 s = ast_for_suite(c, CHILD(n, 3)); |
| 2982 if (!s) | |
| 2983 return NULL; | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2984 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
2985 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2986 } |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2987 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2988 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2989 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
|
2990 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2991 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2992 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
41824
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Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
2993 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2994 } |
| 2995 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2996 /* class NAME '(' arglist ')' ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2997 /* 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
|
2998 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
|
2999 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
|
3000 if (!call) |
| 35742 | 3001 return NULL; |
| 3002 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
|
3003 if (!s) |
| 35742 | 3004 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3005 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3006 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
|
3007 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
|
3008 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3009 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3010 } |
| 3011 | |
| 3012 static stmt_ty | |
| 3013 ast_for_stmt(struct compiling *c, const node *n) | |
| 3014 { | |
| 3015 if (TYPE(n) == stmt) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3016 assert(NCH(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3017 n = CHILD(n, 0); |
| 35742 | 3018 } |
| 3019 if (TYPE(n) == simple_stmt) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3020 assert(num_stmts(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3021 n = CHILD(n, 0); |
| 35742 | 3022 } |
| 3023 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
3024 REQ(n, small_stmt); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
3025 n = CHILD(n, 0); |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3026 /* 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
|
3027 | 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
|
3028 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3029 switch (TYPE(n)) { |
| 35742 | 3030 case expr_stmt: |
| 3031 return ast_for_expr_stmt(c, n); | |
| 3032 case del_stmt: | |
| 3033 return ast_for_del_stmt(c, n); | |
| 3034 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
|
3035 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3036 case flow_stmt: |
| 3037 return ast_for_flow_stmt(c, n); | |
| 3038 case import_stmt: | |
| 3039 return ast_for_import_stmt(c, n); | |
| 3040 case global_stmt: | |
| 3041 return ast_for_global_stmt(c, n); | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3042 case nonlocal_stmt: |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3043 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3044 case assert_stmt: |
| 3045 return ast_for_assert_stmt(c, n); | |
| 3046 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3047 PyErr_Format(PyExc_SystemError, |
| 35742 | 3048 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3049 TYPE(n), NCH(n)); | |
| 3050 return NULL; | |
| 3051 } | |
| 3052 } | |
| 3053 else { | |
| 3054 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3055 | funcdef | classdef | decorated |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3056 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3057 node *ch = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3058 REQ(n, compound_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3059 switch (TYPE(ch)) { |
| 35742 | 3060 case if_stmt: |
| 3061 return ast_for_if_stmt(c, ch); | |
| 3062 case while_stmt: | |
| 3063 return ast_for_while_stmt(c, ch); | |
| 3064 case for_stmt: | |
| 3065 return ast_for_for_stmt(c, ch); | |
| 3066 case try_stmt: | |
| 3067 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3068 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3069 return ast_for_with_stmt(c, ch); |
| 35742 | 3070 case funcdef: |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3071 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3072 case classdef: |
|
41824
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3073 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
|
3074 case decorated: |
|
24b60622b944
Merged revisions 55407-55513 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3075 return ast_for_decorated(c, ch); |
| 35742 | 3076 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3077 PyErr_Format(PyExc_SystemError, |
| 35742 | 3078 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3079 TYPE(n), NCH(n)); | |
| 3080 return NULL; | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3081 } |
| 35742 | 3082 } |
| 3083 } | |
| 3084 | |
| 3085 static PyObject * | |
|
46664
031dfe455585
Merged revisions 62425-62429,62434-62436,62441,62444,62446-62448,62450-62455,62463,62465-62466,62469,62474,62476-62478,62480,62485,62492,62497-62498,62500,62507,62513-62514,62516,62521,62531,62535,62545-62546,62548-62551,62553-62559,62569,62574,62577,62593,62595,62604-62606,62608,62616,62626-62627,62636,62638,62644-62645,62647-62648,62651-62653,62656,62661,62663,62680,62686-62687,62696,62699-62703,62711 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
46306
diff
changeset
|
3086 parsenumber(struct compiling *c, const char *s) |
| 35742 | 3087 { |
|
41554
06145fbc7ab9
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changeset
|
3088 const char *end; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
3089 long x; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
3090 double dx; |
| 35742 | 3091 #ifndef WITHOUT_COMPLEX |
|
46664
031dfe455585
Merged revisions 62425-62429,62434-62436,62441,62444,62446-62448,62450-62455,62463,62465-62466,62469,62474,62476-62478,62480,62485,62492,62497-62498,62500,62507,62513-62514,62516,62521,62531,62535,62545-62546,62548-62551,62553-62559,62569,62574,62577,62593,62595,62604-62606,62608,62616,62626-62627,62636,62638,62644-62645,62647-62648,62651-62653,62656,62661,62663,62680,62686-62687,62696,62699-62703,62711 via svnmerge from
Christian Heimes <christian@cheimes.de>
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diff
changeset
|
3092 Py_complex compl; |
|
41554
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parents:
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diff
changeset
|
3093 int imflag; |
| 35742 | 3094 #endif |
| 3095 | |
|
41554
06145fbc7ab9
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diff
changeset
|
3096 errno = 0; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
3097 end = s + strlen(s) - 1; |
| 35742 | 3098 #ifndef WITHOUT_COMPLEX |
|
41554
06145fbc7ab9
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parents:
41509
diff
changeset
|
3099 imflag = *end == 'j' || *end == 'J'; |
| 35742 | 3100 #endif |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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41509
diff
changeset
|
3101 if (s[0] == '0') { |
|
06145fbc7ab9
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parents:
41509
diff
changeset
|
3102 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
06145fbc7ab9
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diff
changeset
|
3103 if (x < 0 && errno == 0) { |
|
06145fbc7ab9
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parents:
41509
diff
changeset
|
3104 return PyLong_FromString((char *)s, |
|
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|
3105 (char **)0, |
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|
3106 0); |
|
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|
3107 } |
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3108 } |
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|
3109 else |
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3110 x = PyOS_strtol((char *)s, (char **)&end, 0); |
|
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3111 if (*end == '\0') { |
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3112 if (errno != 0) |
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3113 return PyLong_FromString((char *)s, (char **)0, 0); |
|
44099
f324631462a2
Cleanup: Replaced most PyInt_ aliases with PyLong_ and disabled the aliases in intobject.h
Christian Heimes <christian@cheimes.de>
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|
3114 return PyLong_FromLong(x); |
|
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3115 } |
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3116 /* XXX Huge floats may silently fail */ |
| 35742 | 3117 #ifndef WITHOUT_COMPLEX |
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3118 if (imflag) { |
|
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3119 compl.real = 0.; |
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3120 PyFPE_START_PROTECT("atof", return 0) |
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3121 compl.imag = PyOS_ascii_atof(s); |
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3122 PyFPE_END_PROTECT(c) |
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3123 return PyComplex_FromCComplex(compl); |
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3124 } |
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3125 else |
| 35742 | 3126 #endif |
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3127 { |
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3128 PyFPE_START_PROTECT("atof", return 0) |
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3129 dx = PyOS_ascii_atof(s); |
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3130 PyFPE_END_PROTECT(dx) |
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3131 return PyFloat_FromDouble(dx); |
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3132 } |
| 35742 | 3133 } |
| 3134 | |
| 3135 static PyObject * | |
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3136 decode_utf8(struct compiling *c, const char **sPtr, const char *end, char* encoding) |
| 35742 | 3137 { |
|
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3138 PyObject *u, *v; |
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3139 char *s, *t; |
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3140 t = s = (char *)*sPtr; |
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3141 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
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3142 while (s < end && (*s & 0x80)) s++; |
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3143 *sPtr = s; |
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3144 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
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3145 if (u == NULL) |
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3146 return NULL; |
|
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3147 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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3148 Py_DECREF(u); |
|
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3149 return v; |
| 35742 | 3150 } |
| 3151 | |
| 3152 static PyObject * | |
|
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3153 decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, const char *encoding) |
| 35742 | 3154 { |
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3155 PyObject *v, *u; |
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3156 char *buf; |
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3157 char *p; |
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3158 const char *end; |
|
43819
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Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
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3159 |
|
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3160 if (encoding == NULL) { |
|
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3161 buf = (char *)s; |
|
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3162 u = NULL; |
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3163 } else if (strcmp(encoding, "iso-8859-1") == 0) { |
|
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3164 buf = (char *)s; |
|
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|
3165 u = NULL; |
|
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|
3166 } else { |
|
48330
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|
3167 /* check for integer overflow */ |
|
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|
3168 if (len > PY_SIZE_MAX / 4) |
|
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3169 return NULL; |
|
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|
3170 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ |
|
47301
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|
3171 u = PyBytes_FromStringAndSize((char *)NULL, len * 4); |
|
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3172 if (u == NULL) |
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3173 return NULL; |
|
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|
3174 p = buf = PyBytes_AsString(u); |
|
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3175 end = s + len; |
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3176 while (s < end) { |
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|
3177 if (*s == '\\') { |
|
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|
3178 *p++ = *s++; |
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|
3179 if (*s & 0x80) { |
|
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|
3180 strcpy(p, "u005c"); |
|
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3181 p += 5; |
|
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|
3182 } |
|
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3183 } |
|
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|
3184 if (*s & 0x80) { /* XXX inefficient */ |
|
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|
3185 PyObject *w; |
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3186 char *r; |
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|
3187 Py_ssize_t rn, i; |
|
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3188 w = decode_utf8(c, &s, end, "utf-16-be"); |
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3189 if (w == NULL) { |
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|
3190 Py_DECREF(u); |
|
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3191 return NULL; |
|
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3192 } |
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|
3193 r = PyBytes_AS_STRING(w); |
|
44351
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|
3194 rn = Py_SIZE(w); |
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3195 assert(rn % 2 == 0); |
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3196 for (i = 0; i < rn; i += 2) { |
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3197 sprintf(p, "\\u%02x%02x", |
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3198 r[i + 0] & 0xFF, |
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|
3199 r[i + 1] & 0xFF); |
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3200 p += 6; |
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3201 } |
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|
3202 Py_DECREF(w); |
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3203 } else { |
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3204 *p++ = *s++; |
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3205 } |
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|
3206 } |
|
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06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3207 len = p - buf; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3208 s = buf; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3209 } |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3210 if (rawmode) |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3211 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3212 else |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3213 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3214 Py_XDECREF(u); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3215 return v; |
| 35742 | 3216 } |
| 3217 | |
| 3218 /* s is a Python string literal, including the bracketing quote characters, | |
|
43777
0d462d789b18
Merging the py3k-pep3137 branch back into the py3k branch.
Guido van Rossum <guido@python.org>
parents:
43734
diff
changeset
|
3219 * and r &/or b prefixes (if any), and embedded escape sequences (if any). |
| 35742 | 3220 * parsestr parses it, and returns the decoded Python string object. |
| 3221 */ | |
| 3222 static PyObject * | |
|
46120
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Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
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changeset
|
3223 parsestr(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3224 { |
|
41554
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3225 size_t len; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3226 const char *s = STR(n); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3227 int quote = Py_CHARMASK(*s); |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3228 int rawmode = 0; |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3229 int need_encoding; |
|
43777
0d462d789b18
Merging the py3k-pep3137 branch back into the py3k branch.
Guido van Rossum <guido@python.org>
parents:
43734
diff
changeset
|
3230 if (isalpha(quote)) { |
|
41554
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3231 if (quote == 'b' || quote == 'B') { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3232 quote = *++s; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3233 *bytesmode = 1; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3234 } |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3235 if (quote == 'r' || quote == 'R') { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3236 quote = *++s; |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3237 rawmode = 1; |
|
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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|
3238 } |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3239 } |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3240 if (quote != '\'' && quote != '\"') { |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3241 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3242 return NULL; |
|
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|
3243 } |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3244 s++; |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3245 len = strlen(s); |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3246 if (len > INT_MAX) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3247 PyErr_SetString(PyExc_OverflowError, |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3248 "string to parse is too long"); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3249 return NULL; |
|
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|
3250 } |
|
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|
3251 if (s[--len] != quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3252 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3253 return NULL; |
|
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changeset
|
3254 } |
|
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|
3255 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3256 s += 2; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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|
3257 len -= 2; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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|
3258 if (s[--len] != quote || s[--len] != quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3259 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3260 return NULL; |
| 40894 | 3261 } |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3262 } |
|
46306
b10292eafb07
Reverted r62128 on Guido's orders
Benjamin Peterson <benjamin@python.org>
parents:
46272
diff
changeset
|
3263 if (!*bytesmode && !rawmode) { |
|
46664
031dfe455585
Merged revisions 62425-62429,62434-62436,62441,62444,62446-62448,62450-62455,62463,62465-62466,62469,62474,62476-62478,62480,62485,62492,62497-62498,62500,62507,62513-62514,62516,62521,62531,62535,62545-62546,62548-62551,62553-62559,62569,62574,62577,62593,62595,62604-62606,62608,62616,62626-62627,62636,62638,62644-62645,62647-62648,62651-62653,62656,62661,62663,62680,62686-62687,62696,62699-62703,62711 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
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changeset
|
3264 return decode_unicode(c, s, len, rawmode, c->c_encoding); |
|
41554
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Merged revisions 53952-54987 via svnmerge from
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|
3265 } |
|
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changeset
|
3266 if (*bytesmode) { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
3267 /* Disallow non-ascii characters (but not escapes) */ |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
3268 const char *c; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
3269 for (c = s; *c; c++) { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3270 if (Py_CHARMASK(*c) >= 0x80) { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3271 ast_error(n, "bytes can only contain ASCII " |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
3272 "literal characters."); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
3273 return NULL; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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changeset
|
3274 } |
|
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changeset
|
3275 } |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3276 } |
|
46120
78504d604b44
Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
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changeset
|
3277 need_encoding = (!*bytesmode && c->c_encoding != NULL && |
|
78504d604b44
Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
45931
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changeset
|
3278 strcmp(c->c_encoding, "utf-8") != 0 && |
|
78504d604b44
Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
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changeset
|
3279 strcmp(c->c_encoding, "iso-8859-1") != 0); |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3280 if (rawmode || strchr(s, '\\') == NULL) { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3281 if (need_encoding) { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3282 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
|
3283 if (u == NULL || !*bytesmode) |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3284 return u; |
|
46120
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Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
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changeset
|
3285 v = PyUnicode_AsEncodedString(u, c->c_encoding, NULL); |
|
41554
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changeset
|
3286 Py_DECREF(u); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3287 return v; |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3288 } else if (*bytesmode) { |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
3289 return PyBytes_FromStringAndSize(s, len); |
|
46120
78504d604b44
Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
45931
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changeset
|
3290 } else if (strcmp(c->c_encoding, "utf-8") == 0) { |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3291 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
|
3292 } else { |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3293 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
|
3294 } |
|
41554
06145fbc7ab9
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Guido van Rossum <guido@python.org>
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changeset
|
3295 } |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
3296 return PyBytes_DecodeEscape(s, len, NULL, 1, |
|
46120
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Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
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changeset
|
3297 need_encoding ? c->c_encoding : NULL); |
| 35742 | 3298 } |
| 3299 | |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3300 /* Build a Python string object out of a STRING+ atom. This takes care of |
| 35742 | 3301 * compile-time literal catenation, calling parsestr() on each piece, and |
| 3302 * pasting the intermediate results together. | |
| 3303 */ | |
| 3304 static PyObject * | |
| 40894 | 3305 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3306 { |
|
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changeset
|
3307 PyObject *v; |
|
06145fbc7ab9
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changeset
|
3308 int i; |
|
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changeset
|
3309 REQ(CHILD(n, 0), STRING); |
|
46120
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|
3310 v = parsestr(c, CHILD(n, 0), bytesmode); |
|
41554
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|
3311 if (v != NULL) { |
|
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changeset
|
3312 /* String literal concatenation */ |
|
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changeset
|
3313 for (i = 1; i < NCH(n); i++) { |
|
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changeset
|
3314 PyObject *s; |
|
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changeset
|
3315 int subbm = 0; |
|
46120
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changeset
|
3316 s = parsestr(c, CHILD(n, i), &subbm); |
|
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|
3317 if (s == NULL) |
|
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changeset
|
3318 goto onError; |
|
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changeset
|
3319 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
|
3320 ast_error(n, "cannot mix bytes and nonbytes literals"); |
|
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changeset
|
3321 goto onError; |
|
06145fbc7ab9
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changeset
|
3322 } |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
3323 if (PyBytes_Check(v) && PyBytes_Check(s)) { |
|
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
3324 PyBytes_ConcatAndDel(&v, s); |
|
41554
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3325 if (v == NULL) |
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3326 goto onError; |
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3327 } |
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3328 else { |
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3329 PyObject *temp = PyUnicode_Concat(v, s); |
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3330 Py_DECREF(s); |
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3331 Py_DECREF(v); |
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3332 v = temp; |
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3333 if (v == NULL) |
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3334 goto onError; |
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3335 } |
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Four months of trunk changes (including a few releases...)
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3336 } |
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3337 } |
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3338 return v; |
| 35742 | 3339 |
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3340 onError: |
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3341 Py_XDECREF(v); |
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3342 return NULL; |
| 35742 | 3343 } |