Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 65348:453fd8182c2f
Use locale encoding if Py_FileSystemDefaultEncoding is not set
* PyUnicode_EncodeFSDefault(), PyUnicode_DecodeFSDefaultAndSize() and
PyUnicode_DecodeFSDefault() use the locale encoding instead of UTF-8 if
Py_FileSystemDefaultEncoding is NULL
* redecode_filenames() functions and _Py_code_object_list (issue #9630)
are no more needed: remove them
| author | Victor Stinner <victor.stinner@haypocalc.com> |
|---|---|
| date | Fri, 15 Oct 2010 12:04:23 +0000 |
| parents | 861c35cef7aa |
| children | 55ed5c524428 |
| rev | line source |
|---|---|
| 35742 | 1 /* |
| 2 * This file includes functions to transform a concrete syntax tree (CST) to | |
| 3 * an abstract syntax tree (AST). The main function is PyAST_FromNode(). | |
| 4 * | |
| 5 */ | |
| 6 #include "Python.h" | |
| 7 #include "Python-ast.h" | |
| 8 #include "grammar.h" | |
| 9 #include "node.h" | |
|
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10 #include "pyarena.h" |
| 35742 | 11 #include "ast.h" |
| 12 #include "token.h" | |
| 13 #include "parsetok.h" | |
| 14 #include "graminit.h" | |
| 15 | |
| 16 #include <assert.h> | |
| 17 | |
| 18 /* Data structure used internally */ | |
| 19 struct compiling { | |
|
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20 char *c_encoding; /* source encoding */ |
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21 PyArena *c_arena; /* arena for allocating memeory */ |
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22 const char *c_filename; /* filename */ |
| 35742 | 23 }; |
| 24 | |
| 25 static asdl_seq *seq_for_testlist(struct compiling *, const node *); | |
| 26 static expr_ty ast_for_expr(struct compiling *, const node *); | |
| 27 static stmt_ty ast_for_stmt(struct compiling *, const node *); | |
| 28 static asdl_seq *ast_for_suite(struct compiling *, const node *); | |
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29 static asdl_seq *ast_for_exprlist(struct compiling *, const node *, |
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30 expr_context_ty); |
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31 static expr_ty ast_for_testlist(struct compiling *, const node *); |
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32 static stmt_ty ast_for_classdef(struct compiling *, const node *, asdl_seq *); |
| 35742 | 33 |
| 34 /* Note different signature for ast_for_call */ | |
| 35 static expr_ty ast_for_call(struct compiling *, const node *, expr_ty); | |
| 36 | |
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37 static PyObject *parsenumber(struct compiling *, const char *); |
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38 static PyObject *parsestr(struct compiling *, const node *n, int *bytesmode); |
| 40894 | 39 static PyObject *parsestrplus(struct compiling *, const node *n, |
| 40 int *bytesmode); | |
| 35742 | 41 |
| 42 #ifndef LINENO | |
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43 #define LINENO(n) ((n)->n_lineno) |
| 35742 | 44 #endif |
| 45 | |
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46 #define COMP_GENEXP 0 |
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47 #define COMP_LISTCOMP 1 |
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48 #define COMP_SETCOMP 2 |
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49 |
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50 static identifier |
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51 new_identifier(const char* n, PyArena *arena) |
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52 { |
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53 PyObject* id = PyUnicode_DecodeUTF8(n, strlen(n), NULL); |
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54 Py_UNICODE *u; |
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55 if (!id) |
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56 return NULL; |
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57 u = PyUnicode_AS_UNICODE(id); |
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58 /* Check whether there are non-ASCII characters in the |
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59 identifier; if so, normalize to NFKC. */ |
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60 for (; *u; u++) { |
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61 if (*u >= 128) { |
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62 PyObject *m = PyImport_ImportModuleNoBlock("unicodedata"); |
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63 PyObject *id2; |
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64 if (!m) |
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65 return NULL; |
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66 id2 = PyObject_CallMethod(m, "normalize", "sO", "NFKC", id); |
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67 Py_DECREF(m); |
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68 if (!id2) |
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69 return NULL; |
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70 Py_DECREF(id); |
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71 id = id2; |
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72 break; |
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73 } |
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74 } |
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75 PyUnicode_InternInPlace(&id); |
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76 PyArena_AddPyObject(arena, id); |
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77 return id; |
| 35742 | 78 } |
| 79 | |
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80 #define NEW_IDENTIFIER(n) new_identifier(STR(n), c->c_arena) |
| 35742 | 81 |
| 82 /* This routine provides an invalid object for the syntax error. | |
| 83 The outermost routine must unpack this error and create the | |
| 84 proper object. We do this so that we don't have to pass | |
| 85 the filename to everything function. | |
| 86 | |
| 87 XXX Maybe we should just pass the filename... | |
| 88 */ | |
| 89 | |
| 90 static int | |
| 91 ast_error(const node *n, const char *errstr) | |
| 92 { | |
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93 PyObject *u = Py_BuildValue("zii", errstr, LINENO(n), n->n_col_offset); |
| 35742 | 94 if (!u) |
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95 return 0; |
| 35742 | 96 PyErr_SetObject(PyExc_SyntaxError, u); |
| 97 Py_DECREF(u); | |
| 98 return 0; | |
| 99 } | |
| 100 | |
| 101 static void | |
| 102 ast_error_finish(const char *filename) | |
| 103 { | |
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104 PyObject *type, *value, *tback, *errstr, *offset, *loc, *tmp; |
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105 long lineno; |
| 35742 | 106 |
| 107 assert(PyErr_Occurred()); | |
| 108 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
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109 return; |
| 35742 | 110 |
| 111 PyErr_Fetch(&type, &value, &tback); | |
| 112 errstr = PyTuple_GetItem(value, 0); | |
| 113 if (!errstr) | |
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114 return; |
| 35742 | 115 Py_INCREF(errstr); |
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116 lineno = PyLong_AsLong(PyTuple_GetItem(value, 1)); |
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117 if (lineno == -1) { |
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118 Py_DECREF(errstr); |
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119 return; |
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120 } |
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121 offset = PyTuple_GetItem(value, 2); |
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122 if (!offset) { |
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123 Py_DECREF(errstr); |
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124 return; |
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125 } |
| 35742 | 126 Py_DECREF(value); |
| 127 | |
| 128 loc = PyErr_ProgramText(filename, lineno); | |
| 129 if (!loc) { | |
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130 Py_INCREF(Py_None); |
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131 loc = Py_None; |
| 35742 | 132 } |
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133 tmp = Py_BuildValue("(zlOO)", filename, lineno, offset, loc); |
| 35742 | 134 Py_DECREF(loc); |
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135 if (!tmp) { |
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136 Py_DECREF(errstr); |
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137 return; |
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138 } |
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139 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 140 Py_DECREF(errstr); |
| 141 Py_DECREF(tmp); | |
| 142 if (!value) | |
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143 return; |
| 35742 | 144 PyErr_Restore(type, value, tback); |
| 145 } | |
| 146 | |
| 147 /* num_stmts() returns number of contained statements. | |
| 148 | |
| 149 Use this routine to determine how big a sequence is needed for | |
| 150 the statements in a parse tree. Its raison d'etre is this bit of | |
| 151 grammar: | |
| 152 | |
| 153 stmt: simple_stmt | compound_stmt | |
| 154 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 155 | |
| 156 A simple_stmt can contain multiple small_stmt elements joined | |
| 157 by semicolons. If the arg is a simple_stmt, the number of | |
| 158 small_stmt elements is returned. | |
| 159 */ | |
| 160 | |
| 161 static int | |
| 162 num_stmts(const node *n) | |
| 163 { | |
| 164 int i, l; | |
| 165 node *ch; | |
| 166 | |
| 167 switch (TYPE(n)) { | |
| 168 case single_input: | |
| 169 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 170 return 0; | |
| 171 else | |
| 172 return num_stmts(CHILD(n, 0)); | |
| 173 case file_input: | |
| 174 l = 0; | |
| 175 for (i = 0; i < NCH(n); i++) { | |
| 176 ch = CHILD(n, i); | |
| 177 if (TYPE(ch) == stmt) | |
| 178 l += num_stmts(ch); | |
| 179 } | |
| 180 return l; | |
| 181 case stmt: | |
| 182 return num_stmts(CHILD(n, 0)); | |
| 183 case compound_stmt: | |
| 184 return 1; | |
| 185 case simple_stmt: | |
| 186 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 187 case suite: | |
| 188 if (NCH(n) == 1) | |
| 189 return num_stmts(CHILD(n, 0)); | |
| 190 else { | |
| 191 l = 0; | |
| 192 for (i = 2; i < (NCH(n) - 1); i++) | |
| 193 l += num_stmts(CHILD(n, i)); | |
| 194 return l; | |
| 195 } | |
| 196 default: { | |
| 197 char buf[128]; | |
| 198 | |
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199 sprintf(buf, "Non-statement found: %d %d", |
| 35742 | 200 TYPE(n), NCH(n)); |
| 201 Py_FatalError(buf); | |
| 202 } | |
| 203 } | |
| 204 assert(0); | |
| 205 return 0; | |
| 206 } | |
| 207 | |
| 208 /* Transform the CST rooted at node * to the appropriate AST | |
| 209 */ | |
| 210 | |
| 211 mod_ty | |
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212 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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213 PyArena *arena) |
| 35742 | 214 { |
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215 int i, j, k, num; |
| 35742 | 216 asdl_seq *stmts = NULL; |
| 217 stmt_ty s; | |
| 218 node *ch; | |
| 219 struct compiling c; | |
| 220 | |
| 221 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
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222 c.c_encoding = "utf-8"; |
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223 if (TYPE(n) == encoding_decl) { |
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224 #if 0 |
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225 ast_error(n, "encoding declaration in Unicode string"); |
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226 goto error; |
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227 #endif |
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228 n = CHILD(n, 0); |
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229 } |
| 35742 | 230 } else if (TYPE(n) == encoding_decl) { |
| 231 c.c_encoding = STR(n); | |
| 232 n = CHILD(n, 0); | |
| 233 } else { | |
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234 /* PEP 3120 */ |
| 42403 | 235 c.c_encoding = "utf-8"; |
| 35742 | 236 } |
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237 c.c_arena = arena; |
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238 c.c_filename = filename; |
| 35742 | 239 |
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240 k = 0; |
| 35742 | 241 switch (TYPE(n)) { |
| 242 case file_input: | |
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243 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 244 if (!stmts) |
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245 return NULL; |
| 35742 | 246 for (i = 0; i < NCH(n) - 1; i++) { |
| 247 ch = CHILD(n, i); | |
| 248 if (TYPE(ch) == NEWLINE) | |
| 249 continue; | |
| 250 REQ(ch, stmt); | |
| 251 num = num_stmts(ch); | |
| 252 if (num == 1) { | |
| 253 s = ast_for_stmt(&c, ch); | |
| 254 if (!s) | |
| 255 goto error; | |
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256 asdl_seq_SET(stmts, k++, s); |
| 35742 | 257 } |
| 258 else { | |
| 259 ch = CHILD(ch, 0); | |
| 260 REQ(ch, simple_stmt); | |
| 261 for (j = 0; j < num; j++) { | |
| 262 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 263 if (!s) | |
| 264 goto error; | |
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265 asdl_seq_SET(stmts, k++, s); |
| 35742 | 266 } |
| 267 } | |
| 268 } | |
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269 return Module(stmts, arena); |
| 35742 | 270 case eval_input: { |
| 271 expr_ty testlist_ast; | |
| 272 | |
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273 /* XXX Why not comp_for here? */ |
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274 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 275 if (!testlist_ast) |
| 276 goto error; | |
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277 return Expression(testlist_ast, arena); |
| 35742 | 278 } |
| 279 case single_input: | |
| 280 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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281 stmts = asdl_seq_new(1, arena); |
| 35742 | 282 if (!stmts) |
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283 goto error; |
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284 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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285 arena)); |
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286 if (!asdl_seq_GET(stmts, 0)) |
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287 goto error; |
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288 return Interactive(stmts, arena); |
| 35742 | 289 } |
| 290 else { | |
| 291 n = CHILD(n, 0); | |
| 292 num = num_stmts(n); | |
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293 stmts = asdl_seq_new(num, arena); |
| 35742 | 294 if (!stmts) |
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295 goto error; |
| 35742 | 296 if (num == 1) { |
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297 s = ast_for_stmt(&c, n); |
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298 if (!s) |
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299 goto error; |
| 35742 | 300 asdl_seq_SET(stmts, 0, s); |
| 301 } | |
| 302 else { | |
| 303 /* Only a simple_stmt can contain multiple statements. */ | |
| 304 REQ(n, simple_stmt); | |
| 305 for (i = 0; i < NCH(n); i += 2) { | |
| 306 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 307 break; | |
| 308 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 309 if (!s) | |
| 310 goto error; | |
| 311 asdl_seq_SET(stmts, i / 2, s); | |
| 312 } | |
| 313 } | |
| 314 | |
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315 return Interactive(stmts, arena); |
| 35742 | 316 } |
| 317 default: | |
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318 PyErr_Format(PyExc_SystemError, |
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319 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 320 goto error; |
| 321 } | |
| 322 error: | |
| 323 ast_error_finish(filename); | |
| 324 return NULL; | |
| 325 } | |
| 326 | |
| 327 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 328 */ | |
| 329 | |
| 330 static operator_ty | |
| 331 get_operator(const node *n) | |
| 332 { | |
| 333 switch (TYPE(n)) { | |
| 334 case VBAR: | |
| 335 return BitOr; | |
| 336 case CIRCUMFLEX: | |
| 337 return BitXor; | |
| 338 case AMPER: | |
| 339 return BitAnd; | |
| 340 case LEFTSHIFT: | |
| 341 return LShift; | |
| 342 case RIGHTSHIFT: | |
| 343 return RShift; | |
| 344 case PLUS: | |
| 345 return Add; | |
| 346 case MINUS: | |
| 347 return Sub; | |
| 348 case STAR: | |
| 349 return Mult; | |
| 350 case SLASH: | |
| 351 return Div; | |
| 352 case DOUBLESLASH: | |
| 353 return FloorDiv; | |
| 354 case PERCENT: | |
| 355 return Mod; | |
| 356 default: | |
|
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357 return (operator_ty)0; |
| 35742 | 358 } |
| 359 } | |
| 360 | |
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361 static const char* FORBIDDEN[] = { |
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362 "None", |
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363 "True", |
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364 "False", |
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365 NULL, |
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366 }; |
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367 |
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368 static int |
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369 forbidden_name(identifier name, const node *n, int full_checks) |
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370 { |
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371 assert(PyUnicode_Check(name)); |
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372 if (PyUnicode_CompareWithASCIIString(name, "__debug__") == 0) { |
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373 ast_error(n, "assignment to keyword"); |
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374 return 1; |
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375 } |
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376 if (full_checks) { |
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377 const char **p; |
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378 for (p = FORBIDDEN; *p; p++) { |
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379 if (PyUnicode_CompareWithASCIIString(name, *p) == 0) { |
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380 ast_error(n, "assignment to keyword"); |
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381 return 1; |
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382 } |
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383 } |
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384 } |
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385 return 0; |
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386 } |
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387 |
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388 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 389 |
| 390 Only sets context for expr kinds that "can appear in assignment context" | |
| 391 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 392 an appropriate syntax error and returns false. | |
| 393 */ | |
| 394 | |
| 395 static int | |
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396 set_context(struct compiling *c, expr_ty e, expr_context_ty ctx, const node *n) |
| 35742 | 397 { |
| 398 asdl_seq *s = NULL; | |
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399 /* If a particular expression type can't be used for assign / delete, |
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400 set expr_name to its name and an error message will be generated. |
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401 */ |
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402 const char* expr_name = NULL; |
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403 |
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404 /* The ast defines augmented store and load contexts, but the |
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405 implementation here doesn't actually use them. The code may be |
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406 a little more complex than necessary as a result. It also means |
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407 that expressions in an augmented assignment have a Store context. |
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408 Consider restructuring so that augmented assignment uses |
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409 set_context(), too. |
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410 */ |
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411 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 412 |
| 413 switch (e->kind) { | |
| 414 case Attribute_kind: | |
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415 e->v.Attribute.ctx = ctx; |
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416 if (ctx == Store && forbidden_name(e->v.Attribute.attr, n, 1)) |
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417 return 0; |
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418 break; |
| 35742 | 419 case Subscript_kind: |
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420 e->v.Subscript.ctx = ctx; |
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421 break; |
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422 case Starred_kind: |
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423 e->v.Starred.ctx = ctx; |
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424 if (!set_context(c, e->v.Starred.value, ctx, n)) |
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425 return 0; |
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426 break; |
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428 if (ctx == Store) { |
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429 if (forbidden_name(e->v.Name.id, n, 1)) |
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430 return 0; /* forbidden_name() calls ast_error() */ |
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431 } |
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432 e->v.Name.ctx = ctx; |
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433 break; |
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435 e->v.List.ctx = ctx; |
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436 s = e->v.List.elts; |
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437 break; |
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439 if (asdl_seq_LEN(e->v.Tuple.elts)) { |
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440 e->v.Tuple.ctx = ctx; |
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441 s = e->v.Tuple.elts; |
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442 } |
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443 else { |
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444 expr_name = "()"; |
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445 } |
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447 case Lambda_kind: |
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448 expr_name = "lambda"; |
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449 break; |
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451 expr_name = "function call"; |
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452 break; |
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453 case BoolOp_kind: |
| 35742 | 454 case BinOp_kind: |
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455 case UnaryOp_kind: |
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456 expr_name = "operator"; |
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457 break; |
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459 expr_name = "generator expression"; |
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460 break; |
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461 case Yield_kind: |
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462 expr_name = "yield expression"; |
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463 break; |
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464 case ListComp_kind: |
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465 expr_name = "list comprehension"; |
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466 break; |
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467 case SetComp_kind: |
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468 expr_name = "set comprehension"; |
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469 break; |
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470 case DictComp_kind: |
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471 expr_name = "dict comprehension"; |
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473 case Dict_kind: |
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474 case Set_kind: |
| 35742 | 475 case Num_kind: |
| 476 case Str_kind: | |
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477 expr_name = "literal"; |
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478 break; |
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479 case Ellipsis_kind: |
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480 expr_name = "Ellipsis"; |
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481 break; |
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482 case Compare_kind: |
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483 expr_name = "comparison"; |
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484 break; |
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485 case IfExp_kind: |
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486 expr_name = "conditional expression"; |
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487 break; |
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488 default: |
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489 PyErr_Format(PyExc_SystemError, |
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490 "unexpected expression in assignment %d (line %d)", |
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491 e->kind, e->lineno); |
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492 return 0; |
| 35742 | 493 } |
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494 /* Check for error string set by switch */ |
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495 if (expr_name) { |
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496 char buf[300]; |
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497 PyOS_snprintf(buf, sizeof(buf), |
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498 "can't %s %s", |
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499 ctx == Store ? "assign to" : "delete", |
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500 expr_name); |
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501 return ast_error(n, buf); |
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502 } |
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503 |
| 35742 | 504 /* If the LHS is a list or tuple, we need to set the assignment |
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505 context for all the contained elements. |
| 35742 | 506 */ |
| 507 if (s) { | |
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508 int i; |
| 35742 | 509 |
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510 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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511 if (!set_context(c, (expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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512 return 0; |
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513 } |
| 35742 | 514 } |
| 515 return 1; | |
| 516 } | |
| 517 | |
| 518 static operator_ty | |
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519 ast_for_augassign(struct compiling *c, const node *n) |
| 35742 | 520 { |
| 521 REQ(n, augassign); | |
| 522 n = CHILD(n, 0); | |
| 523 switch (STR(n)[0]) { | |
| 524 case '+': | |
| 525 return Add; | |
| 526 case '-': | |
| 527 return Sub; | |
| 528 case '/': | |
| 529 if (STR(n)[1] == '/') | |
| 530 return FloorDiv; | |
| 531 else | |
| 532 return Div; | |
| 533 case '%': | |
| 534 return Mod; | |
| 535 case '<': | |
| 536 return LShift; | |
| 537 case '>': | |
| 538 return RShift; | |
| 539 case '&': | |
| 540 return BitAnd; | |
| 541 case '^': | |
| 542 return BitXor; | |
| 543 case '|': | |
| 544 return BitOr; | |
| 545 case '*': | |
| 546 if (STR(n)[1] == '*') | |
| 547 return Pow; | |
| 548 else | |
| 549 return Mult; | |
| 550 default: | |
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551 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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552 return (operator_ty)0; |
| 35742 | 553 } |
| 554 } | |
| 555 | |
| 556 static cmpop_ty | |
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557 ast_for_comp_op(struct compiling *c, const node *n) |
| 35742 | 558 { |
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559 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 560 |'is' 'not' |
| 561 */ | |
| 562 REQ(n, comp_op); | |
| 563 if (NCH(n) == 1) { | |
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564 n = CHILD(n, 0); |
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565 switch (TYPE(n)) { |
| 35742 | 566 case LESS: |
| 567 return Lt; | |
| 568 case GREATER: | |
| 569 return Gt; | |
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570 case EQEQUAL: /* == */ |
| 35742 | 571 return Eq; |
| 572 case LESSEQUAL: | |
| 573 return LtE; | |
| 574 case GREATEREQUAL: | |
| 575 return GtE; | |
| 576 case NOTEQUAL: | |
| 577 return NotEq; | |
| 578 case NAME: | |
| 579 if (strcmp(STR(n), "in") == 0) | |
| 580 return In; | |
| 581 if (strcmp(STR(n), "is") == 0) | |
| 582 return Is; | |
| 583 default: | |
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584 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 585 STR(n)); |
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586 return (cmpop_ty)0; |
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587 } |
| 35742 | 588 } |
| 589 else if (NCH(n) == 2) { | |
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590 /* handle "not in" and "is not" */ |
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591 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 592 case NAME: |
| 593 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 594 return NotIn; | |
| 595 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 596 return IsNot; | |
| 597 default: | |
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598 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 599 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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600 return (cmpop_ty)0; |
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601 } |
| 35742 | 602 } |
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603 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 604 NCH(n)); |
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605 return (cmpop_ty)0; |
| 35742 | 606 } |
| 607 | |
| 608 static asdl_seq * | |
| 609 seq_for_testlist(struct compiling *c, const node *n) | |
| 610 { | |
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611 /* testlist: test (',' test)* [','] |
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612 testlist_star_expr: test|star_expr (',' test|star_expr)* [','] |
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613 */ |
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614 asdl_seq *seq; |
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615 expr_ty expression; |
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616 int i; |
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617 assert(TYPE(n) == testlist || TYPE(n) == testlist_star_expr || TYPE(n) == testlist_comp); |
| 35742 | 618 |
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619 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 620 if (!seq) |
| 621 return NULL; | |
| 622 | |
| 623 for (i = 0; i < NCH(n); i += 2) { | |
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624 const node *ch = CHILD(n, i); |
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625 assert(TYPE(ch) == test || TYPE(ch) == test_nocond || TYPE(ch) == star_expr); |
| 35742 | 626 |
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627 expression = ast_for_expr(c, ch); |
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628 if (!expression) |
| 35742 | 629 return NULL; |
| 630 | |
| 631 assert(i / 2 < seq->size); | |
| 632 asdl_seq_SET(seq, i / 2, expression); | |
| 633 } | |
| 634 return seq; | |
| 635 } | |
| 636 | |
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637 static arg_ty |
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638 compiler_arg(struct compiling *c, const node *n) |
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639 { |
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640 identifier name; |
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641 expr_ty annotation = NULL; |
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642 node *ch; |
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643 |
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644 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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645 ch = CHILD(n, 0); |
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646 name = NEW_IDENTIFIER(ch); |
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647 if (!name) |
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648 return NULL; |
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649 if (forbidden_name(name, ch, 0)) |
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650 return NULL; |
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651 |
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652 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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653 annotation = ast_for_expr(c, CHILD(n, 2)); |
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654 if (!annotation) |
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655 return NULL; |
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656 } |
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657 |
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658 return arg(name, annotation, c->c_arena); |
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659 #if 0 |
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660 result = Tuple(args, Store, LINENO(n), n->n_col_offset, c->c_arena); |
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661 if (!set_context(c, result, Store, n)) |
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662 return NULL; |
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663 return result; |
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664 #endif |
| 35742 | 665 } |
| 666 | |
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667 /* returns -1 if failed to handle keyword only arguments |
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668 returns new position to keep processing if successful |
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669 (',' tfpdef ['=' test])* |
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670 ^^^ |
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671 start pointing here |
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672 */ |
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673 static int |
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674 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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675 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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676 { |
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677 PyObject *argname; |
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678 node *ch; |
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679 expr_ty expression, annotation; |
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680 arg_ty arg; |
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681 int i = start; |
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682 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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683 |
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684 if (kwonlyargs == NULL) { |
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685 ast_error(CHILD(n, start), "named arguments must follow bare *"); |
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686 return -1; |
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687 } |
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688 assert(kwdefaults != NULL); |
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689 while (i < NCH(n)) { |
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690 ch = CHILD(n, i); |
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691 switch (TYPE(ch)) { |
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692 case vfpdef: |
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693 case tfpdef: |
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694 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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695 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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696 if (!expression) |
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697 goto error; |
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698 asdl_seq_SET(kwdefaults, j, expression); |
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699 i += 2; /* '=' and test */ |
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700 } |
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701 else { /* setting NULL if no default value exists */ |
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702 asdl_seq_SET(kwdefaults, j, NULL); |
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
703 } |
|
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
704 if (NCH(ch) == 3) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
705 /* ch is NAME ':' test */ |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
706 annotation = ast_for_expr(c, CHILD(ch, 2)); |
|
64178
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Check the return values for all functions returning an ast node.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
62373
diff
changeset
|
707 if (!annotation) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
708 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
709 } |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
710 else { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
711 annotation = NULL; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
712 } |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
713 ch = CHILD(ch, 0); |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
714 argname = NEW_IDENTIFIER(ch); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
715 if (!argname) |
|
40215
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
716 goto error; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
717 if (forbidden_name(argname, ch, 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
718 goto error; |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
719 arg = arg(argname, annotation, c->c_arena); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
720 if (!arg) |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
721 goto error; |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
722 asdl_seq_SET(kwonlyargs, j++, arg); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
723 i += 2; /* the name and the comma */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
724 break; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
725 case DOUBLESTAR: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
726 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
727 default: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
728 ast_error(ch, "unexpected node"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
729 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
730 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
731 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
732 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
733 error: |
|
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parents:
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diff
changeset
|
734 return -1; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
735 } |
| 35742 | 736 |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
737 /* Create AST for argument list. */ |
| 35742 | 738 |
| 739 static arguments_ty | |
| 740 ast_for_arguments(struct compiling *c, const node *n) | |
| 741 { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
742 /* This function handles both typedargslist (function definition) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
743 and varargslist (lambda definition). |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
744 |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
745 parameters: '(' [typedargslist] ')' |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
746 typedargslist: ((tfpdef ['=' test] ',')* |
|
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Antoine Pitrou <solipsis@pitrou.net>
parents:
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diff
changeset
|
747 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
|
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Merged revisions 55328-55341 via svnmerge from
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parents:
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changeset
|
748 | '**' tfpdef) |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
749 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
|
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diff
changeset
|
750 tfpdef: NAME [':' test] |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
751 varargslist: ((vfpdef ['=' test] ',')* |
|
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Antoine Pitrou <solipsis@pitrou.net>
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diff
changeset
|
752 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
753 | '**' vfpdef) |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
754 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
755 vfpdef: NAME |
| 35742 | 756 */ |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
757 int i, j, k, nposargs = 0, nkwonlyargs = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
758 int nposdefaults = 0, found_default = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
759 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 760 identifier vararg = NULL, kwarg = NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
761 arg_ty arg; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
762 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 763 node *ch; |
| 764 | |
| 765 if (TYPE(n) == parameters) { | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
766 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
|
767 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
|
768 NULL, c->c_arena); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
769 n = CHILD(n, 1); |
| 35742 | 770 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
771 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 772 |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
773 /* 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
|
774 variable i is the loop index for this for loop and the next. |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
775 The next loop picks up where the first leaves off. |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
776 */ |
| 35742 | 777 for (i = 0; i < NCH(n); i++) { |
|
40215
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
778 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
779 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
|
780 /* skip star */ |
|
41717
9ad84070b22d
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Guido van Rossum <guido@python.org>
parents:
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|
781 i++; |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
782 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
|
783 (TYPE(CHILD(n, i)) == tfpdef || |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
784 TYPE(CHILD(n, i)) == vfpdef)) { |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
785 i++; |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
786 } |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
787 break; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
788 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
789 if (TYPE(ch) == DOUBLESTAR) break; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
790 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
|
791 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
792 } |
|
61466
cab14be0ada1
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Antoine Pitrou <solipsis@pitrou.net>
parents:
56951
diff
changeset
|
793 /* count the number of keyword only args & |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
794 defaults for keyword only args */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
795 for ( ; i < NCH(n); ++i) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
796 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
797 if (TYPE(ch) == DOUBLESTAR) break; |
|
41717
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
798 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 799 } |
|
40215
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Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
800 posargs = (nposargs ? asdl_seq_new(nposargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
801 if (!posargs && nposargs) |
|
64178
5fd26f452600
Check the return values for all functions returning an ast node.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
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diff
changeset
|
802 return NULL; |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
803 kwonlyargs = (nkwonlyargs ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
804 asdl_seq_new(nkwonlyargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
805 if (!kwonlyargs && nkwonlyargs) |
|
64178
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Check the return values for all functions returning an ast node.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
62373
diff
changeset
|
806 return NULL; |
|
61466
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parents:
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changeset
|
807 posdefaults = (nposdefaults ? |
|
40215
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Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
808 asdl_seq_new(nposdefaults, c->c_arena) : NULL); |
|
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
809 if (!posdefaults && nposdefaults) |
|
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Check the return values for all functions returning an ast node.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
62373
diff
changeset
|
810 return NULL; |
|
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parents:
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changeset
|
811 /* The length of kwonlyargs and kwdefaults are same |
|
40215
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parents:
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diff
changeset
|
812 since we set NULL as default for keyword only argument w/o default |
|
1cce0526d9b0
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Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
813 - we have sequence data structure, but no dictionary */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
814 kwdefaults = (nkwonlyargs ? |
|
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parents:
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diff
changeset
|
815 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
|
816 if (!kwdefaults && nkwonlyargs) |
|
64178
5fd26f452600
Check the return values for all functions returning an ast node.
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parents:
62373
diff
changeset
|
817 return NULL; |
|
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diff
changeset
|
818 |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
819 if (nposargs + nkwonlyargs > 255) { |
|
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820 ast_error(n, "more than 255 arguments"); |
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821 return NULL; |
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822 } |
| 35742 | 823 |
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824 /* tfpdef: NAME [':' test] |
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825 vfpdef: NAME |
| 35742 | 826 */ |
| 827 i = 0; | |
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828 j = 0; /* index for defaults */ |
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829 k = 0; /* index for args */ |
| 35742 | 830 while (i < NCH(n)) { |
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831 ch = CHILD(n, i); |
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832 switch (TYPE(ch)) { |
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833 case tfpdef: |
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834 case vfpdef: |
| 35742 | 835 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 836 anything other than EQUAL or a comma? */ | |
| 837 /* XXX Should NCH(n) check be made a separate check? */ | |
| 838 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { | |
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839 expr_ty expression = ast_for_expr(c, CHILD(n, i + 2)); |
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840 if (!expression) |
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841 return NULL; |
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842 assert(posdefaults != NULL); |
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843 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 844 i += 2; |
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845 found_default = 1; |
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846 } |
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847 else if (found_default) { |
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848 ast_error(n, |
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849 "non-default argument follows default argument"); |
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850 return NULL; |
| 35742 | 851 } |
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852 arg = compiler_arg(c, ch); |
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853 if (!arg) |
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854 return NULL; |
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855 asdl_seq_SET(posargs, k++, arg); |
| 35742 | 856 i += 2; /* the name and the comma */ |
| 857 break; | |
| 858 case STAR: | |
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859 if (i+1 >= NCH(n)) { |
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860 ast_error(CHILD(n, i), |
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861 "named arguments must follow bare *"); |
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862 return NULL; |
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863 } |
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864 ch = CHILD(n, i+1); /* tfpdef or COMMA */ |
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865 if (TYPE(ch) == COMMA) { |
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866 int res = 0; |
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867 i += 2; /* now follows keyword only arguments */ |
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868 res = handle_keywordonly_args(c, n, i, |
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869 kwonlyargs, kwdefaults); |
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870 if (res == -1) return NULL; |
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871 i = res; /* res has new position to process */ |
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872 } |
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873 else { |
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874 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
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875 if (!vararg) |
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876 return NULL; |
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877 if (forbidden_name(vararg, CHILD(ch, 0), 0)) |
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878 return NULL; |
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879 if (NCH(ch) > 1) { |
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880 /* there is an annotation on the vararg */ |
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881 varargannotation = ast_for_expr(c, CHILD(ch, 2)); |
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882 if (!varargannotation) |
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883 return NULL; |
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884 } |
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885 i += 3; |
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886 if (i < NCH(n) && (TYPE(CHILD(n, i)) == tfpdef |
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887 || TYPE(CHILD(n, i)) == vfpdef)) { |
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888 int res = 0; |
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889 res = handle_keywordonly_args(c, n, i, |
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890 kwonlyargs, kwdefaults); |
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891 if (res == -1) return NULL; |
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892 i = res; /* res has new position to process */ |
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893 } |
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894 } |
| 35742 | 895 break; |
| 896 case DOUBLESTAR: | |
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897 ch = CHILD(n, i+1); /* tfpdef */ |
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898 assert(TYPE(ch) == tfpdef || TYPE(ch) == vfpdef); |
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899 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
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900 if (!kwarg) |
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901 return NULL; |
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902 if (NCH(ch) > 1) { |
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903 /* there is an annotation on the kwarg */ |
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904 kwargannotation = ast_for_expr(c, CHILD(ch, 2)); |
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905 if (!kwargannotation) |
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906 return NULL; |
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907 } |
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908 if (forbidden_name(kwarg, CHILD(ch, 0), 0)) |
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909 return NULL; |
| 35742 | 910 i += 3; |
| 911 break; | |
| 912 default: | |
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913 PyErr_Format(PyExc_SystemError, |
| 35742 | 914 "unexpected node in varargslist: %d @ %d", |
| 915 TYPE(ch), i); | |
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916 return NULL; |
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917 } |
| 35742 | 918 } |
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919 return arguments(posargs, vararg, varargannotation, kwonlyargs, kwarg, |
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920 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 921 } |
| 922 | |
| 923 static expr_ty | |
| 924 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 925 { | |
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926 expr_ty e; |
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927 identifier id; |
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928 int lineno, col_offset; |
| 35742 | 929 int i; |
| 930 | |
| 931 REQ(n, dotted_name); | |
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932 |
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933 lineno = LINENO(n); |
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934 col_offset = n->n_col_offset; |
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935 |
| 35742 | 936 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 937 if (!id) | |
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938 return NULL; |
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939 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 940 if (!e) |
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941 return NULL; |
| 35742 | 942 |
| 943 for (i = 2; i < NCH(n); i+=2) { | |
| 944 id = NEW_IDENTIFIER(CHILD(n, i)); | |
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945 if (!id) |
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946 return NULL; |
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947 e = Attribute(e, id, Load, lineno, col_offset, c->c_arena); |
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948 if (!e) |
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949 return NULL; |
| 35742 | 950 } |
| 951 | |
| 952 return e; | |
| 953 } | |
| 954 | |
| 955 static expr_ty | |
| 956 ast_for_decorator(struct compiling *c, const node *n) | |
| 957 { | |
| 958 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 959 expr_ty d = NULL; | |
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960 expr_ty name_expr; |
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961 |
| 35742 | 962 REQ(n, decorator); |
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963 REQ(CHILD(n, 0), AT); |
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964 REQ(RCHILD(n, -1), NEWLINE); |
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965 |
| 35742 | 966 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); |
| 967 if (!name_expr) | |
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968 return NULL; |
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969 |
| 35742 | 970 if (NCH(n) == 3) { /* No arguments */ |
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971 d = name_expr; |
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972 name_expr = NULL; |
| 35742 | 973 } |
| 974 else if (NCH(n) == 5) { /* Call with no arguments */ | |
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975 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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976 n->n_col_offset, c->c_arena); |
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977 if (!d) |
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978 return NULL; |
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979 name_expr = NULL; |
| 35742 | 980 } |
| 981 else { | |
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982 d = ast_for_call(c, CHILD(n, 3), name_expr); |
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983 if (!d) |
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984 return NULL; |
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985 name_expr = NULL; |
| 35742 | 986 } |
| 987 | |
| 988 return d; | |
| 989 } | |
| 990 | |
| 991 static asdl_seq* | |
| 992 ast_for_decorators(struct compiling *c, const node *n) | |
| 993 { | |
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994 asdl_seq* decorator_seq; |
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995 expr_ty d; |
| 35742 | 996 int i; |
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997 |
| 35742 | 998 REQ(n, decorators); |
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999 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 1000 if (!decorator_seq) |
| 1001 return NULL; | |
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| 35742 | 1003 for (i = 0; i < NCH(n); i++) { |
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1004 d = ast_for_decorator(c, CHILD(n, i)); |
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1005 if (!d) |
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1006 return NULL; |
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1007 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 1008 } |
| 1009 return decorator_seq; | |
| 1010 } | |
| 1011 | |
| 1012 static stmt_ty | |
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1013 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 1014 { |
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1015 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
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1016 identifier name; |
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1017 arguments_ty args; |
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1018 asdl_seq *body; |
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1019 expr_ty returns = NULL; |
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1020 int name_i = 1; |
| 35742 | 1021 |
| 1022 REQ(n, funcdef); | |
| 1023 | |
| 1024 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 1025 if (!name) | |
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1026 return NULL; |
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1027 if (forbidden_name(name, CHILD(n, name_i), 0)) |
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1028 return NULL; |
| 35742 | 1029 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 1030 if (!args) | |
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1031 return NULL; |
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1032 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
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1033 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
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1034 if (!returns) |
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1035 return NULL; |
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1036 name_i += 2; |
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1037 } |
| 35742 | 1038 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 1039 if (!body) | |
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1040 return NULL; |
| 35742 | 1041 |
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1042 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
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1043 n->n_col_offset, c->c_arena); |
| 35742 | 1044 } |
| 1045 | |
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1046 static stmt_ty |
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1047 ast_for_decorated(struct compiling *c, const node *n) |
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1048 { |
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1049 /* decorated: decorators (classdef | funcdef) */ |
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1050 stmt_ty thing = NULL; |
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1051 asdl_seq *decorator_seq = NULL; |
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1052 |
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1053 REQ(n, decorated); |
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1054 |
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1055 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
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1056 if (!decorator_seq) |
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1057 return NULL; |
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1058 |
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1059 assert(TYPE(CHILD(n, 1)) == funcdef || |
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1060 TYPE(CHILD(n, 1)) == classdef); |
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1061 |
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1062 if (TYPE(CHILD(n, 1)) == funcdef) { |
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1063 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
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1064 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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1065 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
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1066 } |
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1067 /* we count the decorators in when talking about the class' or |
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1068 * function's line number */ |
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1069 if (thing) { |
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1070 thing->lineno = LINENO(n); |
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1071 thing->col_offset = n->n_col_offset; |
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1072 } |
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1073 return thing; |
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1074 } |
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1075 |
| 35742 | 1076 static expr_ty |
| 1077 ast_for_lambdef(struct compiling *c, const node *n) | |
| 1078 { | |
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1079 /* lambdef: 'lambda' [varargslist] ':' test |
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1080 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1081 arguments_ty args; |
| 1082 expr_ty expression; | |
| 1083 | |
| 1084 if (NCH(n) == 3) { | |
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1085 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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1086 NULL, c->c_arena); |
| 35742 | 1087 if (!args) |
| 1088 return NULL; | |
| 1089 expression = ast_for_expr(c, CHILD(n, 2)); | |
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1090 if (!expression) |
| 35742 | 1091 return NULL; |
| 1092 } | |
| 1093 else { | |
| 1094 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1095 if (!args) | |
| 1096 return NULL; | |
| 1097 expression = ast_for_expr(c, CHILD(n, 3)); | |
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1098 if (!expression) |
| 35742 | 1099 return NULL; |
| 1100 } | |
| 1101 | |
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1102 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1103 } |
| 1104 | |
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1105 static expr_ty |
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1106 ast_for_ifexpr(struct compiling *c, const node *n) |
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1107 { |
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1108 /* test: or_test 'if' or_test 'else' test */ |
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1109 expr_ty expression, body, orelse; |
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1110 |
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1111 assert(NCH(n) == 5); |
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1112 body = ast_for_expr(c, CHILD(n, 0)); |
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1113 if (!body) |
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1114 return NULL; |
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1115 expression = ast_for_expr(c, CHILD(n, 2)); |
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1116 if (!expression) |
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1117 return NULL; |
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1118 orelse = ast_for_expr(c, CHILD(n, 4)); |
|
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1119 if (!orelse) |
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1120 return NULL; |
|
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|
1121 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
|
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|
1122 c->c_arena); |
|
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1123 } |
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1124 |
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1125 /* |
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1126 Count the number of 'for' loops 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_fors(struct compiling *c, const node *n) |
| 35742 | 1133 { |
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1134 int n_fors = 0; |
| 35742 | 1135 |
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1136 count_comp_for: |
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1137 n_fors++; |
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1138 REQ(n, comp_for); |
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1139 if (NCH(n) == 5) |
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1140 n = CHILD(n, 4); |
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1141 else |
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1142 return n_fors; |
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1143 count_comp_iter: |
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1144 REQ(n, comp_iter); |
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1145 n = CHILD(n, 0); |
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1146 if (TYPE(n) == comp_for) |
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1147 goto count_comp_for; |
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1148 else if (TYPE(n) == comp_if) { |
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1149 if (NCH(n) == 3) { |
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1150 n = CHILD(n, 2); |
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1151 goto count_comp_iter; |
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1152 } |
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1153 else |
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1154 return n_fors; |
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1155 } |
|
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1156 |
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1157 /* Should never be reached */ |
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1158 PyErr_SetString(PyExc_SystemError, |
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1159 "logic error in count_comp_fors"); |
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1160 return -1; |
| 35742 | 1161 } |
| 1162 | |
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1163 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1164 |
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1165 Helper for ast_for_comprehension(). |
| 35742 | 1166 */ |
| 1167 | |
| 1168 static int | |
|
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1169 count_comp_ifs(struct compiling *c, const node *n) |
| 35742 | 1170 { |
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1171 int n_ifs = 0; |
| 35742 | 1172 |
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1173 while (1) { |
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1174 REQ(n, comp_iter); |
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1175 if (TYPE(CHILD(n, 0)) == comp_for) |
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1176 return n_ifs; |
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1177 n = CHILD(n, 0); |
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1178 REQ(n, comp_if); |
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1179 n_ifs++; |
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1180 if (NCH(n) == 2) |
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1181 return n_ifs; |
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1182 n = CHILD(n, 2); |
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1183 } |
| 35742 | 1184 } |
| 1185 | |
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1186 static asdl_seq * |
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1187 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1188 { |
| 1189 int i, n_fors; | |
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1190 asdl_seq *comps; |
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1191 |
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1192 n_fors = count_comp_fors(c, n); |
| 35742 | 1193 if (n_fors == -1) |
| 1194 return NULL; | |
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1195 |
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1196 comps = asdl_seq_new(n_fors, c->c_arena); |
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1197 if (!comps) |
| 35742 | 1198 return NULL; |
|
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1199 |
| 35742 | 1200 for (i = 0; i < n_fors; i++) { |
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1201 comprehension_ty comp; |
| 35742 | 1202 asdl_seq *t; |
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1203 expr_ty expression, first; |
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1204 node *for_ch; |
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1205 |
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1206 REQ(n, comp_for); |
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1207 |
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1208 for_ch = CHILD(n, 1); |
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1209 t = ast_for_exprlist(c, for_ch, Store); |
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1210 if (!t) |
| 35742 | 1211 return NULL; |
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1212 expression = ast_for_expr(c, CHILD(n, 3)); |
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1213 if (!expression) |
| 35742 | 1214 return NULL; |
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1215 |
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1216 /* Check the # of children rather than the length of t, since |
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1217 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
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1218 first = (expr_ty)asdl_seq_GET(t, 0); |
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1219 if (NCH(for_ch) == 1) |
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1220 comp = comprehension(first, expression, NULL, c->c_arena); |
| 35742 | 1221 else |
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1222 comp = comprehension(Tuple(t, Store, first->lineno, first->col_offset, |
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1223 c->c_arena), |
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1224 expression, NULL, c->c_arena); |
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1225 if (!comp) |
| 35742 | 1226 return NULL; |
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1227 |
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1228 if (NCH(n) == 5) { |
| 35742 | 1229 int j, n_ifs; |
| 1230 asdl_seq *ifs; | |
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1231 |
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1232 n = CHILD(n, 4); |
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1233 n_ifs = count_comp_ifs(c, n); |
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1234 if (n_ifs == -1) |
| 35742 | 1235 return NULL; |
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1236 |
|
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1237 ifs = asdl_seq_new(n_ifs, c->c_arena); |
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1238 if (!ifs) |
| 35742 | 1239 return NULL; |
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1240 |
| 35742 | 1241 for (j = 0; j < n_ifs; j++) { |
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1242 REQ(n, comp_iter); |
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1243 n = CHILD(n, 0); |
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1244 REQ(n, comp_if); |
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1245 |
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1246 expression = ast_for_expr(c, CHILD(n, 1)); |
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1247 if (!expression) |
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1248 return NULL; |
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1249 asdl_seq_SET(ifs, j, expression); |
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1250 if (NCH(n) == 3) |
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1251 n = CHILD(n, 2); |
| 35742 | 1252 } |
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1253 /* on exit, must guarantee that n is a comp_for */ |
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1254 if (TYPE(n) == comp_iter) |
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1255 n = CHILD(n, 0); |
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1256 comp->ifs = ifs; |
| 35742 | 1257 } |
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1258 asdl_seq_SET(comps, i, comp); |
| 35742 | 1259 } |
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1260 return comps; |
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1261 } |
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1262 |
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1263 static expr_ty |
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1264 ast_for_itercomp(struct compiling *c, const node *n, int type) |
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1265 { |
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1266 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1267 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1268 expr_ty elt; |
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1269 asdl_seq *comps; |
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1270 |
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1271 assert(NCH(n) > 1); |
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1272 |
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1273 elt = ast_for_expr(c, CHILD(n, 0)); |
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1274 if (!elt) |
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1275 return NULL; |
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1276 |
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1277 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1278 if (!comps) |
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1279 return NULL; |
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1280 |
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1281 if (type == COMP_GENEXP) |
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1282 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1283 else if (type == COMP_LISTCOMP) |
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1284 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1285 else if (type == COMP_SETCOMP) |
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1286 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1287 else |
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1288 /* Should never happen */ |
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1289 return NULL; |
| 35742 | 1290 } |
| 1291 | |
| 1292 static expr_ty | |
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1293 ast_for_dictcomp(struct compiling *c, const node *n) |
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1294 { |
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1295 expr_ty key, value; |
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1296 asdl_seq *comps; |
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1297 |
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1298 assert(NCH(n) > 3); |
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1299 REQ(CHILD(n, 1), COLON); |
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1300 |
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1301 key = ast_for_expr(c, CHILD(n, 0)); |
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1302 if (!key) |
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1303 return NULL; |
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1304 value = ast_for_expr(c, CHILD(n, 2)); |
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1305 if (!value) |
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1306 return NULL; |
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1307 |
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1308 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1309 if (!comps) |
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1310 return NULL; |
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1311 |
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1312 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1313 } |
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1314 |
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1315 static expr_ty |
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1316 ast_for_genexp(struct compiling *c, const node *n) |
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1317 { |
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1318 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1319 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1320 } |
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1321 |
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1322 static expr_ty |
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1323 ast_for_listcomp(struct compiling *c, const node *n) |
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1324 { |
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1325 assert(TYPE(n) == (testlist_comp)); |
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1326 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1327 } |
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1328 |
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1329 static expr_ty |
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1330 ast_for_setcomp(struct compiling *c, const node *n) |
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1331 { |
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1332 assert(TYPE(n) == (dictorsetmaker)); |
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1333 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1334 } |
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1335 |
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1336 |
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1337 static expr_ty |
| 35742 | 1338 ast_for_atom(struct compiling *c, const node *n) |
| 1339 { | |
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1340 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1341 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
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1342 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1343 */ |
| 1344 node *ch = CHILD(n, 0); | |
| 40894 | 1345 int bytesmode = 0; |
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1346 |
| 35742 | 1347 switch (TYPE(ch)) { |
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1348 case NAME: { |
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1349 /* All names start in Load context, but may later be |
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1350 changed. */ |
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1351 PyObject *name = NEW_IDENTIFIER(ch); |
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1352 if (!name) |
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1353 return NULL; |
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1354 return Name(name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1355 } |
| 35742 | 1356 case STRING: { |
| 40894 | 1357 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1358 if (!str) { |
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1359 if (PyErr_ExceptionMatches(PyExc_UnicodeError)) { |
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1360 PyObject *type, *value, *tback, *errstr; |
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1361 PyErr_Fetch(&type, &value, &tback); |
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|
1362 errstr = PyObject_Str(value); |
|
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1363 if (errstr) { |
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1364 char *s = ""; |
|
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1365 char buf[128]; |
|
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1366 s = _PyUnicode_AsString(errstr); |
|
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1367 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
|
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1368 ast_error(n, buf); |
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1369 Py_DECREF(errstr); |
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1370 } else { |
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1371 ast_error(n, "(unicode error) unknown error"); |
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1372 } |
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1373 Py_DECREF(type); |
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1374 Py_DECREF(value); |
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1375 Py_XDECREF(tback); |
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1376 } |
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1377 return NULL; |
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1378 } |
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1379 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1380 if (bytesmode) |
| 1381 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1382 else | |
| 1383 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1384 } |
| 1385 case NUMBER: { | |
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1386 PyObject *pynum = parsenumber(c, STR(ch)); |
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1387 if (!pynum) |
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1388 return NULL; |
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1389 |
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1390 PyArena_AddPyObject(c->c_arena, pynum); |
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1391 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1392 } |
|
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1393 case ELLIPSIS: /* Ellipsis */ |
|
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1394 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1395 case LPAR: /* some parenthesized expressions */ |
|
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1396 ch = CHILD(n, 1); |
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1397 |
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1398 if (TYPE(ch) == RPAR) |
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1399 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1400 |
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1401 if (TYPE(ch) == yield_expr) |
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1402 return ast_for_expr(c, ch); |
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1403 |
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1404 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
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1405 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
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1406 return ast_for_genexp(c, ch); |
|
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1407 |
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1408 return ast_for_testlist(c, ch); |
| 35742 | 1409 case LSQB: /* list (or list comprehension) */ |
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1410 ch = CHILD(n, 1); |
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1411 |
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1412 if (TYPE(ch) == RSQB) |
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1413 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1414 |
|
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|
1415 REQ(ch, testlist_comp); |
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|
1416 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
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1417 asdl_seq *elts = seq_for_testlist(c, ch); |
|
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|
1418 if (!elts) |
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|
1419 return NULL; |
|
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|
1420 |
|
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|
1421 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1422 } |
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|
1423 else |
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|
1424 return ast_for_listcomp(c, ch); |
| 35742 | 1425 case LBRACE: { |
|
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|
1426 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
|
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|
1427 * test (gen_for | (',' test)* [',']) */ |
|
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|
1428 int i, size; |
|
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|
1429 asdl_seq *keys, *values; |
|
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|
1430 |
|
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|
1431 ch = CHILD(n, 1); |
|
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|
1432 if (TYPE(ch) == RBRACE) { |
|
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|
1433 /* it's an empty dict */ |
|
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|
1434 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1435 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
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|
1436 /* it's a simple set */ |
|
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|
1437 asdl_seq *elts; |
|
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|
1438 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
|
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|
1439 elts = asdl_seq_new(size, c->c_arena); |
|
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|
1440 if (!elts) |
|
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|
1441 return NULL; |
|
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|
1442 for (i = 0; i < NCH(ch); i += 2) { |
|
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|
1443 expr_ty expression; |
|
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|
1444 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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|
1445 if (!expression) |
|
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|
1446 return NULL; |
|
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|
1447 asdl_seq_SET(elts, i / 2, expression); |
|
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|
1448 } |
|
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|
1449 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1450 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
|
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|
1451 /* it's a set comprehension */ |
|
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|
1452 return ast_for_setcomp(c, ch); |
|
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|
1453 } else if (NCH(ch) > 3 && TYPE(CHILD(ch, 3)) == comp_for) { |
|
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|
1454 return ast_for_dictcomp(c, ch); |
|
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|
1455 } else { |
|
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|
1456 /* it's a dict */ |
|
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|
1457 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
|
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|
1458 keys = asdl_seq_new(size, c->c_arena); |
|
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|
1459 if (!keys) |
|
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|
1460 return NULL; |
|
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|
1461 |
|
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|
1462 values = asdl_seq_new(size, c->c_arena); |
|
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|
1463 if (!values) |
|
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|
1464 return NULL; |
|
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|
1465 |
|
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|
1466 for (i = 0; i < NCH(ch); i += 4) { |
|
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|
1467 expr_ty expression; |
|
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|
1468 |
|
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|
1469 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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|
1470 if (!expression) |
|
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|
1471 return NULL; |
|
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|
1472 |
|
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|
1473 asdl_seq_SET(keys, i / 4, expression); |
|
35873
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Fix a whole bunch of potential memory leaks (and some real ones too)
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1474 |
|
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|
1475 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
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|
1476 if (!expression) |
|
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|
1477 return NULL; |
|
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|
1478 |
|
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|
1479 asdl_seq_SET(values, i / 4, expression); |
|
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|
1480 } |
|
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|
1481 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1482 } |
| 35742 | 1483 } |
| 1484 default: | |
|
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|
1485 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
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|
1486 return NULL; |
| 35742 | 1487 } |
| 1488 } | |
| 1489 | |
| 1490 static slice_ty | |
| 1491 ast_for_slice(struct compiling *c, const node *n) | |
| 1492 { | |
| 1493 node *ch; | |
| 1494 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1495 | |
| 1496 REQ(n, subscript); | |
| 1497 | |
| 1498 /* | |
|
39783
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Patch #1550786: ellipsis literal.
Georg Brandl <georg@python.org>
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|
1499 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1500 sliceop: ':' [test] |
| 1501 */ | |
| 1502 ch = CHILD(n, 0); | |
| 1503 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1504 /* 'step' variable hold no significance in terms of being used over | |
| 1505 other vars */ | |
|
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|
1506 step = ast_for_expr(c, ch); |
| 35742 | 1507 if (!step) |
| 1508 return NULL; | |
|
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|
1509 |
|
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|
1510 return Index(step, c->c_arena); |
| 35742 | 1511 } |
| 1512 | |
| 1513 if (TYPE(ch) == test) { | |
|
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|
1514 lower = ast_for_expr(c, ch); |
| 35742 | 1515 if (!lower) |
| 1516 return NULL; | |
| 1517 } | |
| 1518 | |
| 1519 /* If there's an upper bound it's in the second or third position. */ | |
| 1520 if (TYPE(ch) == COLON) { | |
|
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|
1521 if (NCH(n) > 1) { |
|
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|
1522 node *n2 = CHILD(n, 1); |
| 35742 | 1523 |
|
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|
1524 if (TYPE(n2) == test) { |
|
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|
1525 upper = ast_for_expr(c, n2); |
| 35742 | 1526 if (!upper) |
| 1527 return NULL; | |
| 1528 } | |
|
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|
1529 } |
| 35742 | 1530 } else if (NCH(n) > 2) { |
|
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|
1531 node *n2 = CHILD(n, 2); |
| 35742 | 1532 |
|
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|
1533 if (TYPE(n2) == test) { |
|
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|
1534 upper = ast_for_expr(c, n2); |
| 35742 | 1535 if (!upper) |
| 1536 return NULL; | |
| 1537 } | |
| 1538 } | |
| 1539 | |
| 1540 ch = CHILD(n, NCH(n) - 1); | |
| 1541 if (TYPE(ch) == sliceop) { | |
|
54918
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|
1542 if (NCH(ch) != 1) { |
|
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|
1543 ch = CHILD(ch, 1); |
|
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|
1544 if (TYPE(ch) == test) { |
|
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|
1545 step = ast_for_expr(c, ch); |
|
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|
1546 if (!step) |
|
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|
1547 return NULL; |
|
f731859e9b3b
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|
1548 } |
| 35742 | 1549 } |
| 1550 } | |
| 1551 | |
|
36065
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|
1552 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1553 } |
| 1554 | |
| 1555 static expr_ty | |
| 1556 ast_for_binop(struct compiling *c, const node *n) | |
| 1557 { | |
|
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|
1558 /* Must account for a sequence of expressions. |
|
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|
1559 How should A op B op C by represented? |
|
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|
1560 BinOp(BinOp(A, op, B), op, C). |
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|
1561 */ |
| 35742 | 1562 |
|
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|
1563 int i, nops; |
|
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|
1564 expr_ty expr1, expr2, result; |
|
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|
1565 operator_ty newoperator; |
|
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|
1566 |
|
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|
1567 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
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|
1568 if (!expr1) |
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|
1569 return NULL; |
| 35742 | 1570 |
|
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|
1571 expr2 = ast_for_expr(c, CHILD(n, 2)); |
|
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|
1572 if (!expr2) |
|
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|
1573 return NULL; |
|
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|
1574 |
|
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|
1575 newoperator = get_operator(CHILD(n, 1)); |
|
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|
1576 if (!newoperator) |
|
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|
1577 return NULL; |
| 35742 | 1578 |
|
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|
1579 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
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|
1580 c->c_arena); |
|
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|
1581 if (!result) |
|
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|
1582 return NULL; |
| 35742 | 1583 |
|
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|
1584 nops = (NCH(n) - 1) / 2; |
|
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|
1585 for (i = 1; i < nops; i++) { |
|
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|
1586 expr_ty tmp_result, tmp; |
|
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|
1587 const node* next_oper = CHILD(n, i * 2 + 1); |
|
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|
1588 |
|
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|
1589 newoperator = get_operator(next_oper); |
|
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|
1590 if (!newoperator) |
| 35742 | 1591 return NULL; |
| 1592 | |
|
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|
1593 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
|
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|
1594 if (!tmp) |
| 35742 | 1595 return NULL; |
| 1596 | |
|
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1597 tmp_result = BinOp(result, newoperator, tmp, |
|
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1598 LINENO(next_oper), next_oper->n_col_offset, |
|
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1599 c->c_arena); |
|
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1600 if (!tmp_result) |
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1601 return NULL; |
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1602 result = tmp_result; |
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1603 } |
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|
1604 return result; |
| 35742 | 1605 } |
| 1606 | |
|
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|
1607 static expr_ty |
|
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|
1608 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
|
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1609 { |
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1610 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
|
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|
1611 subscriptlist: subscript (',' subscript)* [','] |
|
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1612 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
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1613 */ |
|
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|
1614 REQ(n, trailer); |
|
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|
1615 if (TYPE(CHILD(n, 0)) == LPAR) { |
|
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1616 if (NCH(n) == 2) |
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1617 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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1618 n->n_col_offset, c->c_arena); |
|
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1619 else |
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1620 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
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1621 } |
|
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1622 else if (TYPE(CHILD(n, 0)) == DOT ) { |
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1623 PyObject *attr_id = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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1624 if (!attr_id) |
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1625 return NULL; |
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1626 return Attribute(left_expr, attr_id, Load, |
|
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changeset
|
1627 LINENO(n), n->n_col_offset, c->c_arena); |
|
36679
e1391910b026
Simplify ast_for_trailer() in anticipation of more changes.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36676
diff
changeset
|
1628 } |
|
e1391910b026
Simplify ast_for_trailer() in anticipation of more changes.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36676
diff
changeset
|
1629 else { |
|
e1391910b026
Simplify ast_for_trailer() in anticipation of more changes.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36676
diff
changeset
|
1630 REQ(CHILD(n, 0), LSQB); |
|
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842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1631 REQ(CHILD(n, 2), RSQB); |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1632 n = CHILD(n, 1); |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1633 if (NCH(n) == 1) { |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1634 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1635 if (!slc) |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1636 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
|
1637 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1638 c->c_arena); |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1639 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1640 else { |
|
61466
cab14be0ada1
Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents:
56951
diff
changeset
|
1641 /* The grammar is ambiguous here. The ambiguity is resolved |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1642 by treating the sequence as a tuple literal if there are |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1643 no slice features. |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
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|
1644 */ |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1645 int j; |
|
842caa245917
Refactor code for translating "power" nodes.
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parents:
35798
diff
changeset
|
1646 slice_ty slc; |
|
36686
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Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1647 expr_ty e; |
|
40941
2ca14d6a369b
Whoops, fix build breakage. There were still a few uses of the bool type.
Neal Norwitz <nnorwitz@gmail.com>
parents:
40894
diff
changeset
|
1648 int simple = 1; |
|
36686
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Fix parsing of subscriptlist.
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diff
changeset
|
1649 asdl_seq *slices, *elts; |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1650 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
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diff
changeset
|
1651 if (!slices) |
|
842caa245917
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diff
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|
1652 return NULL; |
|
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Refactor code for translating "power" nodes.
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diff
changeset
|
1653 for (j = 0; j < NCH(n); j += 2) { |
|
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parents:
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diff
changeset
|
1654 slc = ast_for_slice(c, CHILD(n, j)); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1655 if (!slc) |
|
35799
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diff
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|
1656 return NULL; |
|
36686
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Fix parsing of subscriptlist.
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diff
changeset
|
1657 if (slc->kind != Index_kind) |
|
40941
2ca14d6a369b
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1658 simple = 0; |
|
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parents:
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diff
changeset
|
1659 asdl_seq_SET(slices, j / 2, slc); |
|
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diff
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|
1660 } |
|
36686
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Fix parsing of subscriptlist.
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diff
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|
1661 if (!simple) { |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1662 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1663 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
36686
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Fix parsing of subscriptlist.
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diff
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|
1664 } |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1665 /* extract Index values and put them in a Tuple */ |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1666 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
36877
e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
parents:
36786
diff
changeset
|
1667 if (!elts) |
|
e9a7a2784e17
SF #1444030: Fix several potential defects found by Coverity.
Hye-Shik Chang <hyeshik@gmail.com>
parents:
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diff
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|
1668 return NULL; |
|
36686
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Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1669 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1670 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
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Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1671 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1672 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1673 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1674 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
36686
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Fix parsing of subscriptlist.
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diff
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|
1675 if (!e) |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
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|
1676 return NULL; |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
changeset
|
1677 return Subscript(left_expr, Index(e, c->c_arena), |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1678 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
35799
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1679 } |
|
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1680 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1681 } |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1682 |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35798
diff
changeset
|
1683 static expr_ty |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
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changeset
|
1684 ast_for_factor(struct compiling *c, const node *n) |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
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|
1685 { |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
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|
1686 expr_ty expression; |
|
654c380cf8b9
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Thomas Wouters <thomas@python.org>
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|
1687 |
|
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diff
changeset
|
1688 expression = ast_for_expr(c, CHILD(n, 1)); |
|
654c380cf8b9
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|
1689 if (!expression) |
|
654c380cf8b9
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|
1690 return NULL; |
|
654c380cf8b9
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|
1691 |
|
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changeset
|
1692 switch (TYPE(CHILD(n, 0))) { |
|
654c380cf8b9
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|
1693 case PLUS: |
|
654c380cf8b9
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38453
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|
1694 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
|
654c380cf8b9
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|
1695 c->c_arena); |
|
654c380cf8b9
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|
1696 case MINUS: |
|
654c380cf8b9
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|
1697 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
|
654c380cf8b9
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|
1698 c->c_arena); |
|
654c380cf8b9
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changeset
|
1699 case TILDE: |
|
654c380cf8b9
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changeset
|
1700 return UnaryOp(Invert, expression, LINENO(n), |
|
654c380cf8b9
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|
1701 n->n_col_offset, c->c_arena); |
|
654c380cf8b9
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|
1702 } |
|
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changeset
|
1703 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
|
654c380cf8b9
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|
1704 TYPE(CHILD(n, 0))); |
|
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|
1705 return NULL; |
|
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|
1706 } |
|
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|
1707 |
|
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changeset
|
1708 static expr_ty |
|
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diff
changeset
|
1709 ast_for_power(struct compiling *c, const node *n) |
|
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|
1710 { |
|
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changeset
|
1711 /* power: atom trailer* ('**' factor)* |
|
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|
1712 */ |
|
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changeset
|
1713 int i; |
|
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diff
changeset
|
1714 expr_ty e, tmp; |
|
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diff
changeset
|
1715 REQ(n, power); |
|
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Refactor code for translating "power" nodes.
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changeset
|
1716 e = ast_for_atom(c, CHILD(n, 0)); |
|
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diff
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|
1717 if (!e) |
|
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changeset
|
1718 return NULL; |
|
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changeset
|
1719 if (NCH(n) == 1) |
|
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diff
changeset
|
1720 return e; |
|
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diff
changeset
|
1721 for (i = 1; i < NCH(n); i++) { |
|
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changeset
|
1722 node *ch = CHILD(n, i); |
|
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changeset
|
1723 if (TYPE(ch) != trailer) |
|
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diff
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|
1724 break; |
|
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changeset
|
1725 tmp = ast_for_trailer(c, ch, e); |
|
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parents:
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changeset
|
1726 if (!tmp) |
|
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changeset
|
1727 return NULL; |
|
40450
cc992d75d5b3
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changeset
|
1728 tmp->lineno = e->lineno; |
|
cc992d75d5b3
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|
1729 tmp->col_offset = e->col_offset; |
|
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|
1730 e = tmp; |
|
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|
1731 } |
|
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diff
changeset
|
1732 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
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diff
changeset
|
1733 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
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|
1734 if (!f) |
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1735 return NULL; |
|
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1736 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1737 if (!tmp) |
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1738 return NULL; |
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1739 e = tmp; |
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1740 } |
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|
1741 return e; |
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1742 } |
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1743 |
|
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1744 static expr_ty |
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1745 ast_for_starred(struct compiling *c, const node *n) |
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1746 { |
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1747 expr_ty tmp; |
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1748 REQ(n, star_expr); |
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1749 |
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1750 tmp = ast_for_expr(c, CHILD(n, 1)); |
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1751 if (!tmp) |
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1752 return NULL; |
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1753 |
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1754 /* The Load context is changed later. */ |
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1755 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1756 } |
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1757 |
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|
1758 |
| 35742 | 1759 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1760 */ | |
| 1761 | |
| 1762 static expr_ty | |
| 1763 ast_for_expr(struct compiling *c, const node *n) | |
| 1764 { | |
| 1765 /* handle the full range of simple expressions | |
|
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1766 test: or_test ['if' or_test 'else' test] | lambdef |
|
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1767 test_nocond: or_test | lambdef_nocond |
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1768 or_test: and_test ('or' and_test)* |
| 35742 | 1769 and_test: not_test ('and' not_test)* |
| 1770 not_test: 'not' not_test | comparison | |
| 1771 comparison: expr (comp_op expr)* | |
| 1772 expr: xor_expr ('|' xor_expr)* | |
| 1773 xor_expr: and_expr ('^' and_expr)* | |
| 1774 and_expr: shift_expr ('&' shift_expr)* | |
| 1775 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1776 arith_expr: term (('+'|'-') term)* | |
| 1777 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1778 factor: ('+'|'-'|'~') factor | power | |
| 1779 power: atom trailer* ('**' factor)* | |
| 1780 */ | |
| 1781 | |
| 1782 asdl_seq *seq; | |
| 1783 int i; | |
| 1784 | |
| 1785 loop: | |
| 1786 switch (TYPE(n)) { | |
| 1787 case test: | |
|
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1788 case test_nocond: |
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1789 if (TYPE(CHILD(n, 0)) == lambdef || |
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1790 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1791 return ast_for_lambdef(c, CHILD(n, 0)); |
|
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1792 else if (NCH(n) > 1) |
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1793 return ast_for_ifexpr(c, n); |
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1794 /* Fallthrough */ |
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1795 case or_test: |
| 35742 | 1796 case and_test: |
| 1797 if (NCH(n) == 1) { | |
| 1798 n = CHILD(n, 0); | |
| 1799 goto loop; | |
| 1800 } | |
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1801 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1802 if (!seq) |
| 1803 return NULL; | |
| 1804 for (i = 0; i < NCH(n); i += 2) { | |
| 1805 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1806 if (!e) | |
| 1807 return NULL; | |
| 1808 asdl_seq_SET(seq, i / 2, e); | |
| 1809 } | |
| 1810 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
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1811 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
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1812 c->c_arena); |
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1813 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
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1814 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1815 case not_test: |
| 1816 if (NCH(n) == 1) { | |
| 1817 n = CHILD(n, 0); | |
| 1818 goto loop; | |
| 1819 } | |
| 1820 else { | |
| 1821 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1822 if (!expression) | |
| 1823 return NULL; | |
| 1824 | |
|
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1825 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
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1826 c->c_arena); |
| 35742 | 1827 } |
| 1828 case comparison: | |
| 1829 if (NCH(n) == 1) { | |
| 1830 n = CHILD(n, 0); | |
| 1831 goto loop; | |
| 1832 } | |
| 1833 else { | |
| 1834 expr_ty expression; | |
|
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1835 asdl_int_seq *ops; |
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1836 asdl_seq *cmps; |
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1837 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1838 if (!ops) |
| 1839 return NULL; | |
|
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1840 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1841 if (!cmps) { |
| 1842 return NULL; | |
| 1843 } | |
| 1844 for (i = 1; i < NCH(n); i += 2) { | |
|
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1845 cmpop_ty newoperator; |
| 35742 | 1846 |
|
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1847 newoperator = ast_for_comp_op(c, CHILD(n, i)); |
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1848 if (!newoperator) { |
| 35742 | 1849 return NULL; |
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1850 } |
| 35742 | 1851 |
| 1852 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
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1853 if (!expression) { |
| 35742 | 1854 return NULL; |
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1855 } |
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1856 |
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1857 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1858 asdl_seq_SET(cmps, i / 2, expression); |
| 1859 } | |
| 1860 expression = ast_for_expr(c, CHILD(n, 0)); | |
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1861 if (!expression) { |
| 35742 | 1862 return NULL; |
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1863 } |
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1864 |
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1865 return Compare(expression, ops, cmps, LINENO(n), |
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1866 n->n_col_offset, c->c_arena); |
| 35742 | 1867 } |
| 1868 break; | |
| 1869 | |
|
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1870 case star_expr: |
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1871 return ast_for_starred(c, n); |
| 35742 | 1872 /* The next five cases all handle BinOps. The main body of code |
| 1873 is the same in each case, but the switch turned inside out to | |
| 1874 reuse the code for each type of operator. | |
| 1875 */ | |
| 1876 case expr: | |
| 1877 case xor_expr: | |
| 1878 case and_expr: | |
| 1879 case shift_expr: | |
| 1880 case arith_expr: | |
| 1881 case term: | |
| 1882 if (NCH(n) == 1) { | |
| 1883 n = CHILD(n, 0); | |
| 1884 goto loop; | |
| 1885 } | |
| 1886 return ast_for_binop(c, n); | |
| 1887 case yield_expr: { | |
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1888 expr_ty exp = NULL; |
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1889 if (NCH(n) == 2) { |
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1890 exp = ast_for_testlist(c, CHILD(n, 1)); |
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1891 if (!exp) |
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1892 return NULL; |
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1893 } |
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1894 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
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1895 } |
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1896 case factor: |
| 35742 | 1897 if (NCH(n) == 1) { |
| 1898 n = CHILD(n, 0); | |
| 1899 goto loop; | |
| 1900 } | |
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1901 return ast_for_factor(c, n); |
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1902 case power: |
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1903 return ast_for_power(c, n); |
| 35742 | 1904 default: |
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1905 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1906 return NULL; |
| 1907 } | |
|
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1908 /* should never get here unless if error is set */ |
| 35742 | 1909 return NULL; |
| 1910 } | |
| 1911 | |
| 1912 static expr_ty | |
| 1913 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1914 { | |
| 1915 /* | |
| 1916 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1917 | '**' test) | |
|
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1918 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1919 */ |
| 1920 | |
| 1921 int i, nargs, nkeywords, ngens; | |
|
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1922 asdl_seq *args; |
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1923 asdl_seq *keywords; |
| 35742 | 1924 expr_ty vararg = NULL, kwarg = NULL; |
| 1925 | |
| 1926 REQ(n, arglist); | |
| 1927 | |
| 1928 nargs = 0; | |
| 1929 nkeywords = 0; | |
| 1930 ngens = 0; | |
| 1931 for (i = 0; i < NCH(n); i++) { | |
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1932 node *ch = CHILD(n, i); |
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1933 if (TYPE(ch) == argument) { |
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1934 if (NCH(ch) == 1) |
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1935 nargs++; |
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1936 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1937 ngens++; |
| 35742 | 1938 else |
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1939 nkeywords++; |
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1940 } |
| 35742 | 1941 } |
| 1942 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
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1943 ast_error(n, "Generator expression must be parenthesized " |
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1944 "if not sole argument"); |
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1945 return NULL; |
| 35742 | 1946 } |
| 1947 | |
| 1948 if (nargs + nkeywords + ngens > 255) { | |
| 1949 ast_error(n, "more than 255 arguments"); | |
| 1950 return NULL; | |
| 1951 } | |
| 1952 | |
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1953 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1954 if (!args) |
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1955 return NULL; |
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1956 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1957 if (!keywords) |
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1958 return NULL; |
| 35742 | 1959 nargs = 0; |
| 1960 nkeywords = 0; | |
| 1961 for (i = 0; i < NCH(n); i++) { | |
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1962 node *ch = CHILD(n, i); |
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1963 if (TYPE(ch) == argument) { |
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1964 expr_ty e; |
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1965 if (NCH(ch) == 1) { |
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1966 if (nkeywords) { |
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1967 ast_error(CHILD(ch, 0), |
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1968 "non-keyword arg after keyword arg"); |
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1969 return NULL; |
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1970 } |
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1971 if (vararg) { |
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1972 ast_error(CHILD(ch, 0), |
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1973 "only named arguments may follow *expression"); |
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1974 return NULL; |
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1975 } |
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1976 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1977 if (!e) |
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1978 return NULL; |
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1979 asdl_seq_SET(args, nargs++, e); |
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1980 } |
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1981 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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1982 e = ast_for_genexp(c, ch); |
| 35742 | 1983 if (!e) |
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1984 return NULL; |
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1985 asdl_seq_SET(args, nargs++, e); |
| 35742 | 1986 } |
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1987 else { |
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1988 keyword_ty kw; |
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1989 identifier key, tmp; |
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1990 int k; |
| 35742 | 1991 |
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1992 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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1993 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1994 if (!e) |
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1995 return NULL; |
| 35742 | 1996 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1997 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 1998 * SF bug 132313 points out that complaining about a keyword | |
| 1999 * then is very confusing. | |
| 2000 */ | |
| 2001 if (e->kind == Lambda_kind) { | |
| 2002 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
|
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2003 return NULL; |
| 35742 | 2004 } else if (e->kind != Name_kind) { |
| 2005 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
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2006 return NULL; |
|
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2007 } else if (forbidden_name(e->v.Name.id, ch, 1)) { |
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2008 return NULL; |
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2009 } |
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2010 key = e->v.Name.id; |
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2011 for (k = 0; k < nkeywords; k++) { |
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2012 tmp = ((keyword_ty)asdl_seq_GET(keywords, k))->arg; |
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2013 if (!PyUnicode_Compare(tmp, key)) { |
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2014 ast_error(CHILD(ch, 0), "keyword argument repeated"); |
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2015 return NULL; |
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2016 } |
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2017 } |
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2018 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 2019 if (!e) |
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2020 return NULL; |
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2021 kw = keyword(key, e, c->c_arena); |
| 35742 | 2022 if (!kw) |
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2023 return NULL; |
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2024 asdl_seq_SET(keywords, nkeywords++, kw); |
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2025 } |
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2026 } |
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2027 else if (TYPE(ch) == STAR) { |
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2028 vararg = ast_for_expr(c, CHILD(n, i+1)); |
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2029 if (!vararg) |
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2030 return NULL; |
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2031 i++; |
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2032 } |
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2033 else if (TYPE(ch) == DOUBLESTAR) { |
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2034 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
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2035 if (!kwarg) |
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2036 return NULL; |
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2037 i++; |
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2038 } |
| 35742 | 2039 } |
| 2040 | |
|
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2041 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 2042 } |
| 2043 | |
| 2044 static expr_ty | |
|
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2045 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 2046 { |
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2047 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
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2048 /* testlist: test (',' test)* [','] */ |
| 35742 | 2049 assert(NCH(n) > 0); |
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2050 if (TYPE(n) == testlist_comp) { |
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2051 if (NCH(n) > 1) |
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2052 assert(TYPE(CHILD(n, 1)) != comp_for); |
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2053 } |
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2054 else { |
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2055 assert(TYPE(n) == testlist || |
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2056 TYPE(n) == testlist_star_expr); |
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2057 } |
| 35742 | 2058 if (NCH(n) == 1) |
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2059 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 2060 else { |
| 2061 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 2062 if (!tmp) | |
| 2063 return NULL; | |
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2064 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2065 } |
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2066 } |
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2067 |
| 35742 | 2068 static stmt_ty |
| 2069 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2070 { | |
| 2071 REQ(n, expr_stmt); | |
|
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2072 /* expr_stmt: testlist_star_expr (augassign (yield_expr|testlist) |
| 35742 | 2073 | ('=' (yield_expr|testlist))*) |
|
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2074 testlist_star_expr: (test|star_expr) (',' test|star_expr)* [','] |
| 35742 | 2075 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' |
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2076 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2077 test: ... here starts the operator precendence dance |
| 2078 */ | |
| 2079 | |
| 2080 if (NCH(n) == 1) { | |
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2081 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2082 if (!e) |
| 2083 return NULL; | |
| 2084 | |
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2085 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2086 } |
| 2087 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2088 expr_ty expr1, expr2; | |
|
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2089 operator_ty newoperator; |
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2090 node *ch = CHILD(n, 0); |
| 35742 | 2091 |
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2092 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2093 if (!expr1) |
| 2094 return NULL; | |
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2095 if(!set_context(c, expr1, Store, ch)) |
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2096 return NULL; |
|
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2097 /* set_context checks that most expressions are not the left side. |
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2098 Augmented assignments can only have a name, a subscript, or an |
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2099 attribute on the left, though, so we have to explicitly check for |
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2100 those. */ |
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2101 switch (expr1->kind) { |
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2102 case Name_kind: |
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2103 case Attribute_kind: |
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2104 case Subscript_kind: |
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2105 break; |
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2106 default: |
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2107 ast_error(ch, "illegal expression for augmented assignment"); |
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2108 return NULL; |
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2109 } |
| 35742 | 2110 |
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2111 ch = CHILD(n, 2); |
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2112 if (TYPE(ch) == testlist) |
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2113 expr2 = ast_for_testlist(c, ch); |
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2114 else |
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2115 expr2 = ast_for_expr(c, ch); |
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2116 if (!expr2) |
| 35742 | 2117 return NULL; |
| 2118 | |
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2119 newoperator = ast_for_augassign(c, CHILD(n, 1)); |
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2120 if (!newoperator) |
| 35742 | 2121 return NULL; |
| 2122 | |
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2123 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2124 } |
| 2125 else { | |
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2126 int i; |
|
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2127 asdl_seq *targets; |
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2128 node *value; |
| 35742 | 2129 expr_ty expression; |
| 2130 | |
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2131 /* a normal assignment */ |
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2132 REQ(CHILD(n, 1), EQUAL); |
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2133 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
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2134 if (!targets) |
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2135 return NULL; |
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2136 for (i = 0; i < NCH(n) - 2; i += 2) { |
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2137 expr_ty e; |
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2138 node *ch = CHILD(n, i); |
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2139 if (TYPE(ch) == yield_expr) { |
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2140 ast_error(ch, "assignment to yield expression not possible"); |
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2141 return NULL; |
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2142 } |
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2143 e = ast_for_testlist(c, ch); |
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2144 if (!e) |
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2145 return NULL; |
| 35742 | 2146 |
|
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2147 /* set context to assign */ |
|
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2148 if (!set_context(c, e, Store, CHILD(n, i))) |
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2149 return NULL; |
| 35742 | 2150 |
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2151 asdl_seq_SET(targets, i / 2, e); |
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2152 } |
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2153 value = CHILD(n, NCH(n) - 1); |
|
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2154 if (TYPE(value) == testlist_star_expr) |
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2155 expression = ast_for_testlist(c, value); |
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2156 else |
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|
2157 expression = ast_for_expr(c, value); |
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2158 if (!expression) |
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|
2159 return NULL; |
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2160 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2161 } |
| 2162 } | |
| 2163 | |
|
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2164 |
| 35742 | 2165 static asdl_seq * |
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|
2166 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2167 { |
| 2168 asdl_seq *seq; | |
| 2169 int i; | |
| 2170 expr_ty e; | |
| 2171 | |
| 2172 REQ(n, exprlist); | |
| 2173 | |
|
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|
2174 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2175 if (!seq) |
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2176 return NULL; |
| 35742 | 2177 for (i = 0; i < NCH(n); i += 2) { |
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2178 e = ast_for_expr(c, CHILD(n, i)); |
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2179 if (!e) |
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2180 return NULL; |
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2181 asdl_seq_SET(seq, i / 2, e); |
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2182 if (context && !set_context(c, e, context, CHILD(n, i))) |
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2183 return NULL; |
| 35742 | 2184 } |
| 2185 return seq; | |
| 2186 } | |
| 2187 | |
| 2188 static stmt_ty | |
| 2189 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2190 { | |
| 2191 asdl_seq *expr_list; | |
|
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2192 |
| 35742 | 2193 /* del_stmt: 'del' exprlist */ |
| 2194 REQ(n, del_stmt); | |
| 2195 | |
| 2196 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2197 if (!expr_list) | |
| 2198 return NULL; | |
|
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|
2199 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2200 } |
| 2201 | |
| 2202 static stmt_ty | |
| 2203 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2204 { | |
| 2205 /* | |
| 2206 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2207 | yield_stmt | |
| 2208 break_stmt: 'break' | |
| 2209 continue_stmt: 'continue' | |
| 2210 return_stmt: 'return' [testlist] | |
| 2211 yield_stmt: yield_expr | |
| 2212 yield_expr: 'yield' testlist | |
| 2213 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2214 */ | |
| 2215 node *ch; | |
| 2216 | |
| 2217 REQ(n, flow_stmt); | |
| 2218 ch = CHILD(n, 0); | |
| 2219 switch (TYPE(ch)) { | |
| 2220 case break_stmt: | |
|
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|
2221 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2222 case continue_stmt: |
|
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|
2223 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2224 case yield_stmt: { /* will reduce to yield_expr */ |
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2225 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); |
|
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2226 if (!exp) |
|
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2227 return NULL; |
|
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|
2228 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2229 } |
| 2230 case return_stmt: | |
| 2231 if (NCH(ch) == 1) | |
|
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changeset
|
2232 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2233 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2234 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2235 if (!expression) |
| 2236 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2237 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2238 } |
| 2239 case raise_stmt: | |
| 2240 if (NCH(ch) == 1) | |
|
43102
981ecc526703
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Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2241 return Raise(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
981ecc526703
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Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2242 else if (NCH(ch) >= 2) { |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2243 expr_ty cause = NULL; |
| 35742 | 2244 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); |
| 2245 if (!expression) | |
| 2246 return NULL; | |
|
43102
981ecc526703
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Collin Winter <collinw@gmail.com>
parents:
42597
diff
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|
2247 if (NCH(ch) == 4) { |
|
981ecc526703
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Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2248 cause = ast_for_expr(c, CHILD(ch, 3)); |
|
981ecc526703
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Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2249 if (!cause) |
|
981ecc526703
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Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2250 return NULL; |
|
981ecc526703
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Collin Winter <collinw@gmail.com>
parents:
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diff
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|
2251 } |
|
981ecc526703
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Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2252 return Raise(expression, cause, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2253 } |
| 2254 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2255 PyErr_Format(PyExc_SystemError, |
| 35742 | 2256 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2257 return NULL; | |
| 2258 } | |
|
36072
de16a85c3b4c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2259 |
|
de16a85c3b4c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2260 PyErr_SetString(PyExc_SystemError, "unhandled flow statement"); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2261 return NULL; |
| 35742 | 2262 } |
| 2263 | |
| 2264 static alias_ty | |
|
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|
2265 alias_for_import_name(struct compiling *c, const node *n, int store) |
| 35742 | 2266 { |
| 2267 /* | |
|
36742
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
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diff
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|
2268 import_as_name: NAME ['as' NAME] |
|
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
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|
2269 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2270 dotted_name: NAME ('.' NAME)* |
| 2271 */ | |
|
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|
2272 identifier str, name; |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
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|
2273 |
| 35742 | 2274 loop: |
| 2275 switch (TYPE(n)) { | |
|
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|
2276 case import_as_name: { |
|
0704f15b4682
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|
2277 node *name_node = CHILD(n, 0); |
|
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|
2278 str = NULL; |
|
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|
2279 name = NEW_IDENTIFIER(name_node); |
|
0704f15b4682
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|
2280 if (!name) |
|
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|
2281 return NULL; |
|
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|
2282 if (NCH(n) == 3) { |
|
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|
2283 node *str_node = CHILD(n, 2); |
|
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|
2284 str = NEW_IDENTIFIER(str_node); |
|
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|
2285 if (!str) |
|
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|
2286 return NULL; |
|
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c45e331238ae
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|
2287 if (store && forbidden_name(str, str_node, 0)) |
|
54918
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|
2288 return NULL; |
|
39442
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2289 } |
|
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|
2290 else { |
|
54954
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Benjamin Peterson <benjamin@python.org>
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|
2291 if (forbidden_name(name, name_node, 0)) |
|
54918
0704f15b4682
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|
2292 return NULL; |
|
0704f15b4682
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|
2293 } |
|
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|
2294 return alias(name, str, c->c_arena); |
|
54918
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|
2295 } |
| 35742 | 2296 case dotted_as_name: |
| 2297 if (NCH(n) == 1) { | |
| 2298 n = CHILD(n, 0); | |
| 2299 goto loop; | |
| 2300 } | |
| 2301 else { | |
|
54918
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|
2302 node *asname_node = CHILD(n, 2); |
|
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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54703
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|
2303 alias_ty a = alias_for_import_name(c, CHILD(n, 0), 0); |
|
39610
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2304 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
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|
2305 return NULL; |
| 35742 | 2306 assert(!a->asname); |
|
54918
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diff
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|
2307 a->asname = NEW_IDENTIFIER(asname_node); |
|
49844
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|
2308 if (!a->asname) |
|
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|
2309 return NULL; |
|
54954
c45e331238ae
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Benjamin Peterson <benjamin@python.org>
parents:
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diff
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|
2310 if (forbidden_name(a->asname, asname_node, 0)) |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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parents:
54703
diff
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|
2311 return NULL; |
| 35742 | 2312 return a; |
| 2313 } | |
| 2314 break; | |
| 2315 case dotted_name: | |
|
49844
40b7277e665f
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|
2316 if (NCH(n) == 1) { |
|
54918
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|
2317 node *name_node = CHILD(n, 0); |
|
0704f15b4682
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|
2318 name = NEW_IDENTIFIER(name_node); |
|
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|
2319 if (!name) |
|
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|
2320 return NULL; |
|
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c45e331238ae
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Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
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|
2321 if (store && forbidden_name(name, name_node, 0)) |
|
54918
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|
2322 return NULL; |
|
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|
2323 return alias(name, NULL, c->c_arena); |
|
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|
2324 } |
| 35742 | 2325 else { |
| 2326 /* 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
|
2327 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
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|
2328 size_t len; |
| 35742 | 2329 char *s; |
|
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|
2330 PyObject *uni; |
| 35742 | 2331 |
| 2332 len = 0; | |
| 2333 for (i = 0; i < NCH(n); i += 2) | |
| 2334 /* length of string plus one for the dot */ | |
| 2335 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2336 len--; /* the last name doesn't have a dot */ | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
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diff
changeset
|
2337 str = PyBytes_FromStringAndSize(NULL, len); |
| 35742 | 2338 if (!str) |
| 2339 return NULL; | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
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diff
changeset
|
2340 s = PyBytes_AS_STRING(str); |
| 35742 | 2341 if (!s) |
| 2342 return NULL; | |
| 2343 for (i = 0; i < NCH(n); i += 2) { | |
| 2344 char *sch = STR(CHILD(n, i)); | |
| 2345 strcpy(s, STR(CHILD(n, i))); | |
| 2346 s += strlen(sch); | |
| 2347 *s++ = '.'; | |
| 2348 } | |
| 2349 --s; | |
| 2350 *s = '\0'; | |
|
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|
2351 uni = PyUnicode_DecodeUTF8(PyBytes_AS_STRING(str), |
|
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|
2352 PyBytes_GET_SIZE(str), |
|
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|
2353 NULL); |
|
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|
2354 Py_DECREF(str); |
|
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2355 if (!uni) |
|
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|
2356 return NULL; |
|
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|
2357 str = uni; |
|
42013
cd125fe83051
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diff
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|
2358 PyUnicode_InternInPlace(&str); |
|
40450
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parents:
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|
2359 PyArena_AddPyObject(c->c_arena, str); |
|
36065
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parents:
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|
2360 return alias(str, NULL, c->c_arena); |
| 35742 | 2361 } |
| 2362 break; | |
| 2363 case STAR: | |
|
42013
cd125fe83051
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Martin v. Löwis <martin@v.loewis.de>
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diff
changeset
|
2364 str = PyUnicode_InternFromString("*"); |
|
40450
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|
2365 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
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parents:
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diff
changeset
|
2366 return alias(str, NULL, c->c_arena); |
| 35742 | 2367 default: |
|
35870
f531c05cd240
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2368 PyErr_Format(PyExc_SystemError, |
| 35742 | 2369 "unexpected import name: %d", TYPE(n)); |
| 2370 return NULL; | |
| 2371 } | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2372 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2373 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2374 return NULL; |
| 2375 } | |
| 2376 | |
| 2377 static stmt_ty | |
| 2378 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2379 { | |
| 2380 /* | |
| 2381 import_stmt: import_name | import_from | |
| 2382 import_name: 'import' dotted_as_names | |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
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parents:
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diff
changeset
|
2383 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
|
2384 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2385 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2386 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2387 int col_offset; |
| 35742 | 2388 int i; |
| 2389 asdl_seq *aliases; | |
| 2390 | |
| 2391 REQ(n, import_stmt); | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
2392 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2393 col_offset = n->n_col_offset; |
| 35742 | 2394 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2395 if (TYPE(n) == import_name) { |
| 35742 | 2396 n = CHILD(n, 1); |
|
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|
2397 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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changeset
|
2398 aliases = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
cc992d75d5b3
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|
2399 if (!aliases) |
|
cc992d75d5b3
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|
2400 return NULL; |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2401 for (i = 0; i < NCH(n); i += 2) { |
|
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Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
2402 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1); |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2403 if (!import_alias) |
| 35742 | 2404 return NULL; |
|
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|
2405 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2406 } |
|
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|
2407 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2408 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2409 else if (TYPE(n) == import_from) { |
| 35742 | 2410 int n_children; |
|
40450
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|
2411 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2412 alias_ty mod = NULL; |
|
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Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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changeset
|
2413 identifier modname = NULL; |
|
61466
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|
2414 |
|
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5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2415 /* Count the number of dots (for relative imports) and check for the |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2416 optional module name */ |
|
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|
2417 for (idx = 1; idx < NCH(n); idx++) { |
|
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Four months of trunk changes (including a few releases...)
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|
2418 if (TYPE(CHILD(n, idx)) == dotted_name) { |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2419 mod = alias_for_import_name(c, CHILD(n, idx), 0); |
|
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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changeset
|
2420 if (!mod) |
|
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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parents:
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diff
changeset
|
2421 return NULL; |
|
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|
2422 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2423 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
2424 } else if (TYPE(CHILD(n, idx)) == ELLIPSIS) { |
|
61466
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Recorded merge of revisions 81029 via svnmerge from
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parents:
56951
diff
changeset
|
2425 /* three consecutive dots are tokenized as one ELLIPSIS */ |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
2426 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
2427 continue; |
|
40450
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Four months of trunk changes (including a few releases...)
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|
2428 } else if (TYPE(CHILD(n, idx)) != DOT) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2429 break; |
|
cc992d75d5b3
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changeset
|
2430 } |
|
cc992d75d5b3
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parents:
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diff
changeset
|
2431 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2432 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2433 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
|
2434 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2435 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2436 /* from ... import * */ |
|
40450
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changeset
|
2437 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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changeset
|
2438 n_children = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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changeset
|
2439 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2440 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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diff
changeset
|
2441 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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changeset
|
2442 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2443 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2444 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2445 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2446 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2447 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2448 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2449 if (n_children % 2 == 0) { |
| 35742 | 2450 ast_error(n, "trailing comma not allowed without" |
| 2451 " surrounding parentheses"); | |
| 2452 return NULL; | |
| 2453 } | |
|
40450
cc992d75d5b3
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parents:
40215
diff
changeset
|
2454 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2455 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2456 ast_error(n, "Unexpected node-type in from-import"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2457 return NULL; |
|
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parents:
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diff
changeset
|
2458 } |
| 35742 | 2459 |
|
40450
cc992d75d5b3
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parents:
40215
diff
changeset
|
2460 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
|
2461 if (!aliases) |
| 35742 | 2462 return NULL; |
| 2463 | |
| 2464 /* 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
|
2465 if (TYPE(n) == STAR) { |
|
54918
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Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2466 alias_ty import_alias = alias_for_import_name(c, n, 1); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2467 if (!import_alias) |
| 35742 | 2468 return NULL; |
|
40450
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changeset
|
2469 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2470 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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parents:
36712
diff
changeset
|
2471 else { |
|
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changeset
|
2472 for (i = 0; i < NCH(n); i += 2) { |
|
54918
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diff
changeset
|
2473 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1); |
|
36718
45e6f901902c
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parents:
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diff
changeset
|
2474 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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parents:
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diff
changeset
|
2475 return NULL; |
|
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changeset
|
2476 asdl_seq_SET(aliases, i / 2, import_alias); |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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parents:
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diff
changeset
|
2477 } |
| 35742 | 2478 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
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parents:
36695
diff
changeset
|
2479 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2480 modname = mod->name; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2481 return ImportFrom(modname, aliases, ndots, lineno, col_offset, |
|
36712
5c36c222e7ca
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2482 c->c_arena); |
| 35742 | 2483 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2484 PyErr_Format(PyExc_SystemError, |
| 35742 | 2485 "unknown import statement: starts with command '%s'", |
| 2486 STR(CHILD(n, 0))); | |
| 2487 return NULL; | |
| 2488 } | |
| 2489 | |
| 2490 static stmt_ty | |
| 2491 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2492 { | |
| 2493 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2494 identifier name; | |
| 2495 asdl_seq *s; | |
| 2496 int i; | |
| 2497 | |
| 2498 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
|
2499 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2500 if (!s) |
|
40450
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diff
changeset
|
2501 return NULL; |
| 35742 | 2502 for (i = 1; i < NCH(n); i += 2) { |
|
40450
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diff
changeset
|
2503 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
cc992d75d5b3
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parents:
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diff
changeset
|
2504 if (!name) |
|
cc992d75d5b3
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diff
changeset
|
2505 return NULL; |
|
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parents:
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diff
changeset
|
2506 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2507 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2508 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2509 } |
| 2510 | |
| 2511 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
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parents:
40941
diff
changeset
|
2512 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
|
2513 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2514 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2515 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2516 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2517 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2518 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2519 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2520 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
|
2521 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2522 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2523 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2524 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2525 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2526 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2527 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2528 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2529 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
|
2530 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2531 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2532 static stmt_ty |
| 35742 | 2533 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2534 { | |
| 2535 /* assert_stmt: 'assert' test [',' test] */ | |
| 2536 REQ(n, assert_stmt); | |
| 2537 if (NCH(n) == 2) { | |
| 2538 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2539 if (!expression) | |
| 2540 return NULL; | |
|
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|
2541 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2542 } |
| 2543 else if (NCH(n) == 4) { | |
| 2544 expr_ty expr1, expr2; | |
| 2545 | |
| 2546 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2547 if (!expr1) | |
| 2548 return NULL; | |
| 2549 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2550 if (!expr2) | |
| 2551 return NULL; | |
|
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|
2552 |
|
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|
2553 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2554 } |
|
35870
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Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2555 PyErr_Format(PyExc_SystemError, |
| 35742 | 2556 "improper number of parts to 'assert' statement: %d", |
| 2557 NCH(n)); | |
| 2558 return NULL; | |
| 2559 } | |
| 2560 | |
| 2561 static asdl_seq * | |
| 2562 ast_for_suite(struct compiling *c, const node *n) | |
| 2563 { | |
| 2564 /* suite: simple_stmt | NEWLINE INDENT stmt+ DEDENT */ | |
|
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Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2565 asdl_seq *seq; |
| 35742 | 2566 stmt_ty s; |
| 2567 int i, total, num, end, pos = 0; | |
| 2568 node *ch; | |
| 2569 | |
| 2570 REQ(n, suite); | |
| 2571 | |
| 2572 total = num_stmts(n); | |
|
36065
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36001
diff
changeset
|
2573 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2574 if (!seq) |
|
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|
2575 return NULL; |
| 35742 | 2576 if (TYPE(CHILD(n, 0)) == simple_stmt) { |
|
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|
2577 n = CHILD(n, 0); |
|
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|
2578 /* simple_stmt always ends with a NEWLINE, |
|
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Recorded merge of revisions 81029 via svnmerge from
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|
2579 and may have a trailing SEMI |
|
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|
2580 */ |
|
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changeset
|
2581 end = NCH(n) - 1; |
|
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Four months of trunk changes (including a few releases...)
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|
2582 if (TYPE(CHILD(n, end - 1)) == SEMI) |
|
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|
2583 end--; |
| 35742 | 2584 /* loop by 2 to skip semi-colons */ |
|
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|
2585 for (i = 0; i < end; i += 2) { |
|
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|
2586 ch = CHILD(n, i); |
|
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|
2587 s = ast_for_stmt(c, ch); |
|
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|
2588 if (!s) |
|
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|
2589 return NULL; |
|
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|
2590 asdl_seq_SET(seq, pos++, s); |
|
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|
2591 } |
| 35742 | 2592 } |
| 2593 else { | |
|
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|
2594 for (i = 2; i < (NCH(n) - 1); i++) { |
|
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|
2595 ch = CHILD(n, i); |
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|
2596 REQ(ch, stmt); |
|
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|
2597 num = num_stmts(ch); |
|
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|
2598 if (num == 1) { |
|
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|
2599 /* small_stmt or compound_stmt with only one child */ |
|
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|
2600 s = ast_for_stmt(c, ch); |
|
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|
2601 if (!s) |
|
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parents:
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|
2602 return NULL; |
|
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parents:
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diff
changeset
|
2603 asdl_seq_SET(seq, pos++, s); |
|
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parents:
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diff
changeset
|
2604 } |
|
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parents:
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diff
changeset
|
2605 else { |
|
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Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2606 int j; |
|
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Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2607 ch = CHILD(ch, 0); |
|
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Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2608 REQ(ch, simple_stmt); |
|
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diff
changeset
|
2609 for (j = 0; j < NCH(ch); j += 2) { |
|
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parents:
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diff
changeset
|
2610 /* statement terminates with a semi-colon ';' */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
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|
2611 if (NCH(CHILD(ch, j)) == 0) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2612 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
2613 break; |
|
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parents:
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diff
changeset
|
2614 } |
|
cc992d75d5b3
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parents:
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diff
changeset
|
2615 s = ast_for_stmt(c, CHILD(ch, j)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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changeset
|
2616 if (!s) |
|
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Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2617 return NULL; |
|
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parents:
40215
diff
changeset
|
2618 asdl_seq_SET(seq, pos++, s); |
|
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parents:
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diff
changeset
|
2619 } |
|
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parents:
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diff
changeset
|
2620 } |
|
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parents:
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diff
changeset
|
2621 } |
| 35742 | 2622 } |
| 2623 assert(pos == seq->size); | |
| 2624 return seq; | |
| 2625 } | |
| 2626 | |
| 2627 static stmt_ty | |
| 2628 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2629 { | |
| 2630 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2631 ['else' ':' suite] | |
| 2632 */ | |
| 2633 char *s; | |
| 2634 | |
| 2635 REQ(n, if_stmt); | |
| 2636 | |
| 2637 if (NCH(n) == 4) { | |
| 2638 expr_ty expression; | |
| 2639 asdl_seq *suite_seq; | |
| 2640 | |
| 2641 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2642 if (!expression) | |
| 2643 return NULL; | |
|
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56951
diff
changeset
|
2644 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
|
2645 if (!suite_seq) |
| 35742 | 2646 return NULL; |
|
61466
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|
2647 |
|
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06145fbc7ab9
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changeset
|
2648 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
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changeset
|
2649 c->c_arena); |
| 35742 | 2650 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2651 |
| 35742 | 2652 s = STR(CHILD(n, 4)); |
| 2653 /* s[2], the third character in the string, will be | |
| 2654 's' for el_s_e, or | |
| 2655 'i' for el_i_f | |
| 2656 */ | |
| 2657 if (s[2] == 's') { | |
| 2658 expr_ty expression; | |
| 2659 asdl_seq *seq1, *seq2; | |
| 2660 | |
| 2661 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2662 if (!expression) | |
| 2663 return NULL; | |
| 2664 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
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parents:
36066
diff
changeset
|
2665 if (!seq1) |
| 35742 | 2666 return NULL; |
| 2667 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
36066
diff
changeset
|
2668 if (!seq2) |
| 35742 | 2669 return NULL; |
| 2670 | |
|
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06145fbc7ab9
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|
2671 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
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changeset
|
2672 c->c_arena); |
| 35742 | 2673 } |
| 2674 else if (s[2] == 'i') { | |
|
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|
2675 int i, n_elif, has_else = 0; |
|
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|
2676 expr_ty expression; |
|
06145fbc7ab9
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|
2677 asdl_seq *suite_seq; |
|
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|
2678 asdl_seq *orelse = NULL; |
|
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changeset
|
2679 n_elif = NCH(n) - 4; |
| 35742 | 2680 /* must reference the child n_elif+1 since 'else' token is third, |
| 2681 not fourth, child from the end. */ | |
|
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|
2682 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
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|
2683 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
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|
2684 has_else = 1; |
|
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changeset
|
2685 n_elif -= 3; |
|
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|
2686 } |
|
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changeset
|
2687 n_elif /= 4; |
| 35742 | 2688 |
|
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|
2689 if (has_else) { |
|
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changeset
|
2690 asdl_seq *suite_seq2; |
| 35742 | 2691 |
|
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|
2692 orelse = asdl_seq_new(1, c->c_arena); |
|
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changeset
|
2693 if (!orelse) |
|
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|
2694 return NULL; |
| 35742 | 2695 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
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|
2696 if (!expression) |
| 35742 | 2697 return NULL; |
|
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|
2698 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
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|
2699 if (!suite_seq) |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2700 return NULL; |
|
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|
2701 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
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|
2702 if (!suite_seq2) |
| 35742 | 2703 return NULL; |
| 2704 | |
|
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|
2705 asdl_seq_SET(orelse, 0, |
|
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|
2706 If(expression, suite_seq, suite_seq2, |
|
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|
2707 LINENO(CHILD(n, NCH(n) - 6)), |
|
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|
2708 CHILD(n, NCH(n) - 6)->n_col_offset, |
|
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|
2709 c->c_arena)); |
|
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|
2710 /* the just-created orelse handled the last elif */ |
|
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Four months of trunk changes (including a few releases...)
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|
2711 n_elif--; |
|
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|
2712 } |
| 35742 | 2713 |
|
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|
2714 for (i = 0; i < n_elif; i++) { |
|
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|
2715 int off = 5 + (n_elif - i - 1) * 4; |
|
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Four months of trunk changes (including a few releases...)
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|
2716 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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|
2717 if (!newobj) |
|
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Four months of trunk changes (including a few releases...)
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|
2718 return NULL; |
| 35742 | 2719 expression = ast_for_expr(c, CHILD(n, off)); |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2720 if (!expression) |
| 35742 | 2721 return NULL; |
| 2722 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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|
2723 if (!suite_seq) |
| 35742 | 2724 return NULL; |
| 2725 | |
|
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|
2726 asdl_seq_SET(newobj, 0, |
|
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|
2727 If(expression, suite_seq, orelse, |
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|
2728 LINENO(CHILD(n, off)), |
|
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|
2729 CHILD(n, off)->n_col_offset, c->c_arena)); |
|
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|
2730 orelse = newobj; |
|
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Four months of trunk changes (including a few releases...)
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|
2731 } |
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|
2732 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
2733 if (!expression) |
|
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|
2734 return NULL; |
|
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|
2735 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
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|
2736 if (!suite_seq) |
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|
2737 return NULL; |
|
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|
2738 return If(expression, suite_seq, orelse, |
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|
2739 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2740 } |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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|
2741 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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|
2742 PyErr_Format(PyExc_SystemError, |
|
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Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2743 "unexpected token in 'if' statement: %s", s); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2744 return NULL; |
| 35742 | 2745 } |
| 2746 | |
| 2747 static stmt_ty | |
| 2748 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2749 { | |
| 2750 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2751 REQ(n, while_stmt); | |
| 2752 | |
| 2753 if (NCH(n) == 4) { | |
| 2754 expr_ty expression; | |
| 2755 asdl_seq *suite_seq; | |
| 2756 | |
| 2757 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2758 if (!expression) | |
| 2759 return NULL; | |
| 2760 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2761 if (!suite_seq) |
| 35742 | 2762 return NULL; |
|
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|
2763 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2764 } |
| 2765 else if (NCH(n) == 7) { | |
| 2766 expr_ty expression; | |
| 2767 asdl_seq *seq1, *seq2; | |
| 2768 | |
| 2769 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2770 if (!expression) | |
| 2771 return NULL; | |
| 2772 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2773 if (!seq1) |
| 35742 | 2774 return NULL; |
| 2775 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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Cleanup a bit and make things more consistent.
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parents:
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|
2776 if (!seq2) |
| 35742 | 2777 return NULL; |
| 2778 | |
|
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2779 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2780 } |
|
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Cleanup a bit and make things more consistent.
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parents:
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|
2781 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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changeset
|
2782 PyErr_Format(PyExc_SystemError, |
|
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|
2783 "wrong number of tokens for 'while' statement: %d", |
|
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Cleanup a bit and make things more consistent.
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|
2784 NCH(n)); |
|
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diff
changeset
|
2785 return NULL; |
| 35742 | 2786 } |
| 2787 | |
| 2788 static stmt_ty | |
| 2789 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2790 { | |
|
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|
2791 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2792 expr_ty expression; |
|
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|
2793 expr_ty target, first; |
|
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|
2794 const node *node_target; |
| 35742 | 2795 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2796 REQ(n, for_stmt); | |
| 2797 | |
| 2798 if (NCH(n) == 9) { | |
|
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|
2799 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2800 if (!seq) |
| 2801 return NULL; | |
| 2802 } | |
| 2803 | |
|
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|
2804 node_target = CHILD(n, 1); |
|
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|
2805 _target = ast_for_exprlist(c, node_target, Store); |
|
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|
2806 if (!_target) |
| 35742 | 2807 return NULL; |
|
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|
2808 /* Check the # of children rather than the length of _target, since |
|
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|
2809 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2810 first = (expr_ty)asdl_seq_GET(_target, 0); |
|
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|
2811 if (NCH(node_target) == 1) |
|
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|
2812 target = first; |
| 35742 | 2813 else |
|
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|
2814 target = Tuple(_target, Store, first->lineno, first->col_offset, c->c_arena); |
| 35742 | 2815 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2816 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2817 if (!expression) |
| 35742 | 2818 return NULL; |
| 2819 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2820 if (!suite_seq) |
| 35742 | 2821 return NULL; |
| 2822 | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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|
2823 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2824 c->c_arena); |
| 35742 | 2825 } |
| 2826 | |
| 2827 static excepthandler_ty | |
| 2828 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2829 { | |
|
41824
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|
2830 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2831 REQ(exc, except_clause); |
| 2832 REQ(body, suite); | |
| 2833 | |
| 2834 if (NCH(exc) == 1) { | |
| 2835 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2836 if (!suite_seq) | |
| 2837 return NULL; | |
| 2838 | |
|
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|
2839 return ExceptHandler(NULL, NULL, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
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changeset
|
2840 exc->n_col_offset, c->c_arena); |
| 35742 | 2841 } |
| 2842 else if (NCH(exc) == 2) { | |
| 2843 expr_ty expression; | |
| 2844 asdl_seq *suite_seq; | |
| 2845 | |
| 2846 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2847 if (!expression) | |
| 2848 return NULL; | |
| 2849 suite_seq = ast_for_suite(c, body); | |
|
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diff
changeset
|
2850 if (!suite_seq) |
| 35742 | 2851 return NULL; |
| 2852 | |
|
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|
2853 return ExceptHandler(expression, NULL, suite_seq, LINENO(exc), |
|
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Thomas Wouters <thomas@python.org>
parents:
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changeset
|
2854 exc->n_col_offset, c->c_arena); |
| 35742 | 2855 } |
| 2856 else if (NCH(exc) == 4) { | |
| 2857 asdl_seq *suite_seq; | |
| 2858 expr_ty expression; | |
|
40588
4bab65fcca8e
Some more changes related to the new except syntax and semantics,
Guido van Rossum <guido@python.org>
parents:
40529
diff
changeset
|
2859 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
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|
2860 if (!e) |
| 35742 | 2861 return NULL; |
|
54954
c45e331238ae
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Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
2862 if (forbidden_name(e, CHILD(exc, 3), 0)) |
|
c45e331238ae
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Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
2863 return NULL; |
|
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changeset
|
2864 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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changeset
|
2865 if (!expression) |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2866 return NULL; |
| 35742 | 2867 suite_seq = ast_for_suite(c, body); |
|
36072
de16a85c3b4c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2868 if (!suite_seq) |
| 35742 | 2869 return NULL; |
| 2870 | |
|
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|
2871 return ExceptHandler(expression, e, suite_seq, LINENO(exc), |
|
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f731859e9b3b
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Thomas Wouters <thomas@python.org>
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changeset
|
2872 exc->n_col_offset, c->c_arena); |
| 35742 | 2873 } |
|
36072
de16a85c3b4c
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diff
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|
2874 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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36066
diff
changeset
|
2875 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2876 "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
|
2877 NCH(exc)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2878 return NULL; |
| 35742 | 2879 } |
| 2880 | |
| 2881 static stmt_ty | |
| 2882 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2883 { | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2884 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
|
2885 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
|
2886 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
|
2887 |
| 35742 | 2888 REQ(n, try_stmt); |
| 2889 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2890 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
|
2891 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
|
2892 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2893 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2894 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
|
2895 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
|
2896 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
|
2897 /* 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
|
2898 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
|
2899 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
|
2900 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
|
2901 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
|
2902 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2903 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2904 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2905 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2906 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
|
2907 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
|
2908 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2909 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2910 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2911 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2912 /* 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
|
2913 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
|
2914 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
|
2915 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
|
2916 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2917 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2918 } |
| 35742 | 2919 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2920 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
|
2921 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2922 return NULL; |
| 2923 } | |
|
61466
cab14be0ada1
Recorded merge of revisions 81029 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents:
56951
diff
changeset
|
2924 |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2925 if (n_except > 0) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2926 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2927 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
|
2928 /* 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
|
2929 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
|
2930 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
|
2931 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2932 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2933 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
|
2934 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
|
2935 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
|
2936 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2937 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2938 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
|
2939 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2940 |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2941 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
|
2942 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
|
2943 if (!finally) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2944 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
|
2945 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2946 /* 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
|
2947 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
|
2948 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
|
2949 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2950 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2951 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
|
2952 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2953 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2954 /* 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
|
2955 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
|
2956 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2957 } |
| 2958 | |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2959 /* with_item: test ['as' expr] */ |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2960 static stmt_ty |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2961 ast_for_with_item(struct compiling *c, const node *n, asdl_seq *content) |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2962 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2963 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2964 |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
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parents:
53707
diff
changeset
|
2965 REQ(n, with_item); |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
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parents:
53707
diff
changeset
|
2966 context_expr = ast_for_expr(c, CHILD(n, 0)); |
|
64178
5fd26f452600
Check the return values for all functions returning an ast node.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
62373
diff
changeset
|
2967 if (!context_expr) |
|
5fd26f452600
Check the return values for all functions returning an ast node.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
62373
diff
changeset
|
2968 return NULL; |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
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53707
diff
changeset
|
2969 if (NCH(n) == 3) { |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
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parents:
53707
diff
changeset
|
2970 optional_vars = ast_for_expr(c, CHILD(n, 2)); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2971 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2972 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2973 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2974 } |
|
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
|
2975 if (!set_context(c, optional_vars, Store, n)) { |
|
40450
cc992d75d5b3
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parents:
40215
diff
changeset
|
2976 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2977 } |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2978 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2979 |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
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parents:
53707
diff
changeset
|
2980 return With(context_expr, optional_vars, content, LINENO(n), |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2981 n->n_col_offset, c->c_arena); |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2982 } |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2983 |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2984 /* with_stmt: 'with' with_item (',' with_item)* ':' suite */ |
|
287ce30d08b5
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|
2985 static stmt_ty |
|
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|
2986 ast_for_with_stmt(struct compiling *c, const node *n) |
|
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|
2987 { |
|
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|
2988 int i; |
|
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|
2989 stmt_ty ret; |
|
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|
2990 asdl_seq *inner; |
|
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|
2991 |
|
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|
2992 REQ(n, with_stmt); |
|
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|
2993 |
|
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|
2994 /* process the with items inside-out */ |
|
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|
2995 i = NCH(n) - 1; |
|
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|
2996 /* the suite of the innermost with item is the suite of the with stmt */ |
|
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|
2997 inner = ast_for_suite(c, CHILD(n, i)); |
|
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|
2998 if (!inner) |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2999 return NULL; |
|
54338
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|
3000 |
|
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|
3001 for (;;) { |
|
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|
3002 i -= 2; |
|
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|
3003 ret = ast_for_with_item(c, CHILD(n, i), inner); |
|
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|
3004 if (!ret) |
|
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|
3005 return NULL; |
|
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changeset
|
3006 /* was this the last item? */ |
|
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|
3007 if (i == 1) |
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|
3008 break; |
|
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|
3009 /* if not, wrap the result so far in a new sequence */ |
|
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|
3010 inner = asdl_seq_new(1, c->c_arena); |
|
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|
3011 if (!inner) |
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|
3012 return NULL; |
|
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|
3013 asdl_seq_SET(inner, 0, ret); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
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|
3014 } |
|
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3015 |
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|
3016 return ret; |
|
36695
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PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3017 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
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|
3018 |
| 35742 | 3019 static stmt_ty |
|
41824
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|
3020 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 3021 { |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
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|
3022 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
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|
3023 PyObject *classname; |
|
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Guido van Rossum <guido@python.org>
parents:
40965
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changeset
|
3024 asdl_seq *s; |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
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|
3025 expr_ty call; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
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|
3026 |
| 35742 | 3027 REQ(n, classdef); |
| 3028 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3029 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 3030 s = ast_for_suite(c, CHILD(n, 3)); |
| 3031 if (!s) | |
| 3032 return NULL; | |
|
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|
3033 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3034 if (!classname) |
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|
3035 return NULL; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3036 if (forbidden_name(classname, CHILD(n, 3), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
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parents:
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|
3037 return NULL; |
|
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|
3038 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
|
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|
3039 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3040 } |
|
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parents:
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|
3041 |
|
19f7ff443718
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parents:
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|
3042 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
40450
cc992d75d5b3
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parents:
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|
3043 s = ast_for_suite(c, CHILD(n,5)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
3044 if (!s) |
|
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3045 return NULL; |
|
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|
3046 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3047 if (!classname) |
|
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|
3048 return NULL; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3049 if (forbidden_name(classname, CHILD(n, 3), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
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parents:
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|
3050 return NULL; |
|
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|
3051 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
|
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|
3052 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3053 } |
| 3054 | |
|
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Guido van Rossum <guido@python.org>
parents:
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changeset
|
3055 /* class NAME '(' arglist ')' ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3056 /* build up a fake Call node so we can extract its pieces */ |
|
49852
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|
3057 { |
|
30d01a5f517e
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parents:
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diff
changeset
|
3058 PyObject *dummy_name; |
|
30d01a5f517e
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parents:
49847
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|
3059 expr_ty dummy; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
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diff
changeset
|
3060 dummy_name = NEW_IDENTIFIER(CHILD(n, 1)); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
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parents:
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diff
changeset
|
3061 if (!dummy_name) |
|
30d01a5f517e
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parents:
49847
diff
changeset
|
3062 return NULL; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3063 dummy = Name(dummy_name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
30d01a5f517e
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parents:
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|
3064 call = ast_for_call(c, CHILD(n, 3), dummy); |
|
30d01a5f517e
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|
3065 if (!call) |
|
30d01a5f517e
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parents:
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|
3066 return NULL; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
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parents:
49847
diff
changeset
|
3067 } |
| 35742 | 3068 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
|
3069 if (!s) |
| 35742 | 3070 return NULL; |
|
49844
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|
3071 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3072 if (!classname) |
|
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|
3073 return NULL; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3074 if (forbidden_name(classname, CHILD(n, 1), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3075 return NULL; |
|
41226
19f7ff443718
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Guido van Rossum <guido@python.org>
parents:
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|
3076 |
|
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|
3077 return ClassDef(classname, call->v.Call.args, call->v.Call.keywords, |
|
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parents:
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diff
changeset
|
3078 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
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changeset
|
3079 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3080 } |
| 3081 | |
| 3082 static stmt_ty | |
| 3083 ast_for_stmt(struct compiling *c, const node *n) | |
| 3084 { | |
| 3085 if (TYPE(n) == stmt) { | |
|
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|
3086 assert(NCH(n) == 1); |
|
cc992d75d5b3
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changeset
|
3087 n = CHILD(n, 0); |
| 35742 | 3088 } |
| 3089 if (TYPE(n) == simple_stmt) { | |
|
40450
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|
3090 assert(num_stmts(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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changeset
|
3091 n = CHILD(n, 0); |
| 35742 | 3092 } |
| 3093 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
3094 n = CHILD(n, 0); |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3095 /* small_stmt: expr_stmt | del_stmt | pass_stmt | flow_stmt |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
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parents:
40941
diff
changeset
|
3096 | import_stmt | global_stmt | nonlocal_stmt | assert_stmt |
|
40450
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|
3097 */ |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3098 switch (TYPE(n)) { |
| 35742 | 3099 case expr_stmt: |
| 3100 return ast_for_expr_stmt(c, n); | |
| 3101 case del_stmt: | |
| 3102 return ast_for_del_stmt(c, n); | |
| 3103 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
|
3104 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3105 case flow_stmt: |
| 3106 return ast_for_flow_stmt(c, n); | |
| 3107 case import_stmt: | |
| 3108 return ast_for_import_stmt(c, n); | |
| 3109 case global_stmt: | |
| 3110 return ast_for_global_stmt(c, n); | |
|
40965
30e5cb3a55ac
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Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3111 case nonlocal_stmt: |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
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parents:
40941
diff
changeset
|
3112 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3113 case assert_stmt: |
| 3114 return ast_for_assert_stmt(c, n); | |
| 3115 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3116 PyErr_Format(PyExc_SystemError, |
| 35742 | 3117 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3118 TYPE(n), NCH(n)); | |
| 3119 return NULL; | |
| 3120 } | |
| 3121 } | |
| 3122 else { | |
| 3123 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
41824
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changeset
|
3124 | funcdef | classdef | decorated |
|
40450
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changeset
|
3125 */ |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
3126 node *ch = CHILD(n, 0); |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3127 REQ(n, compound_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3128 switch (TYPE(ch)) { |
| 35742 | 3129 case if_stmt: |
| 3130 return ast_for_if_stmt(c, ch); | |
| 3131 case while_stmt: | |
| 3132 return ast_for_while_stmt(c, ch); | |
| 3133 case for_stmt: | |
| 3134 return ast_for_for_stmt(c, ch); | |
| 3135 case try_stmt: | |
| 3136 return ast_for_try_stmt(c, ch); | |
|
36695
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PEP 343 -- the with-statement.
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|
3137 case with_stmt: |
|
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|
3138 return ast_for_with_stmt(c, ch); |
| 35742 | 3139 case funcdef: |
|
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3140 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3141 case classdef: |
|
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3142 return ast_for_classdef(c, ch, NULL); |
|
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3143 case decorated: |
|
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3144 return ast_for_decorated(c, ch); |
| 35742 | 3145 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
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|
3146 PyErr_Format(PyExc_SystemError, |
| 35742 | 3147 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3148 TYPE(n), NCH(n)); | |
| 3149 return NULL; | |
|
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3150 } |
| 35742 | 3151 } |
| 3152 } | |
| 3153 | |
| 3154 static PyObject * | |
|
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|
3155 parsenumber(struct compiling *c, const char *s) |
| 35742 | 3156 { |
|
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3157 const char *end; |
|
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3158 long x; |
|
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|
3159 double dx; |
|
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|
3160 Py_complex compl; |
|
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3161 int imflag; |
| 35742 | 3162 |
|
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3163 assert(s != NULL); |
|
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3164 errno = 0; |
|
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3165 end = s + strlen(s) - 1; |
|
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3166 imflag = *end == 'j' || *end == 'J'; |
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3167 if (s[0] == '0') { |
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3168 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
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3169 if (x < 0 && errno == 0) { |
|
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3170 return PyLong_FromString((char *)s, |
|
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|
3171 (char **)0, |
|
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|
3172 0); |
|
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3173 } |
|
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3174 } |
|
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3175 else |
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3176 x = PyOS_strtol((char *)s, (char **)&end, 0); |
|
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|
3177 if (*end == '\0') { |
|
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3178 if (errno != 0) |
|
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|
3179 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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|
3180 return PyLong_FromLong(x); |
|
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3181 } |
|
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|
3182 /* XXX Huge floats may silently fail */ |
|
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3183 if (imflag) { |
|
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|
3184 compl.real = 0.; |
|
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|
3185 compl.imag = PyOS_string_to_double(s, (char **)&end, NULL); |
|
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|
3186 if (compl.imag == -1.0 && PyErr_Occurred()) |
|
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|
3187 return NULL; |
|
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|
3188 return PyComplex_FromCComplex(compl); |
|
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|
3189 } |
|
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|
3190 else |
|
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|
3191 { |
|
53707
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|
3192 dx = PyOS_string_to_double(s, NULL, NULL); |
|
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|
3193 if (dx == -1.0 && PyErr_Occurred()) |
|
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|
3194 return NULL; |
|
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|
3195 return PyFloat_FromDouble(dx); |
|
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|
3196 } |
| 35742 | 3197 } |
| 3198 | |
| 3199 static PyObject * | |
|
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|
3200 decode_utf8(struct compiling *c, const char **sPtr, const char *end, char* encoding) |
| 35742 | 3201 { |
|
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|
3202 PyObject *u, *v; |
|
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|
3203 char *s, *t; |
|
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|
3204 t = s = (char *)*sPtr; |
|
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|
3205 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
|
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|
3206 while (s < end && (*s & 0x80)) s++; |
|
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|
3207 *sPtr = s; |
|
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|
3208 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
|
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3209 if (u == NULL) |
|
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|
3210 return NULL; |
|
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|
3211 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
|
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|
3212 Py_DECREF(u); |
|
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|
3213 return v; |
| 35742 | 3214 } |
| 3215 | |
| 3216 static PyObject * | |
|
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3217 decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, const char *encoding) |
| 35742 | 3218 { |
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3219 PyObject *v, *u; |
|
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3220 char *buf; |
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3221 char *p; |
|
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|
3222 const char *end; |
|
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|
3223 |
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3224 if (encoding == NULL) { |
|
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3225 buf = (char *)s; |
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3226 u = NULL; |
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3227 } else { |
|
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3228 /* check for integer overflow */ |
|
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3229 if (len > PY_SIZE_MAX / 6) |
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3230 return NULL; |
|
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3231 /* "ä" (2 bytes) may become "\U000000E4" (10 bytes), or 1:5 |
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3232 "\ä" (3 bytes) may become "\u005c\U000000E4" (16 bytes), or ~1:6 */ |
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3233 u = PyBytes_FromStringAndSize((char *)NULL, len * 6); |
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3234 if (u == NULL) |
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3235 return NULL; |
|
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3236 p = buf = PyBytes_AsString(u); |
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3237 end = s + len; |
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3238 while (s < end) { |
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3239 if (*s == '\\') { |
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3240 *p++ = *s++; |
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3241 if (*s & 0x80) { |
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3242 strcpy(p, "u005c"); |
|
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3243 p += 5; |
|
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3244 } |
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3245 } |
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|
3246 if (*s & 0x80) { /* XXX inefficient */ |
|
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|
3247 PyObject *w; |
|
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|
3248 char *r; |
|
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|
3249 Py_ssize_t rn, i; |
|
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|
3250 w = decode_utf8(c, &s, end, "utf-32-be"); |
|
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|
3251 if (w == NULL) { |
|
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|
3252 Py_DECREF(u); |
|
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|
3253 return NULL; |
|
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|
3254 } |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
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|
3255 r = PyBytes_AS_STRING(w); |
|
44351
86a2679dca46
#1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT.
Christian Heimes <christian@cheimes.de>
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|
3256 rn = Py_SIZE(w); |
|
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|
3257 assert(rn % 4 == 0); |
|
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|
3258 for (i = 0; i < rn; i += 4) { |
|
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|
3259 sprintf(p, "\\U%02x%02x%02x%02x", |
|
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|
3260 r[i + 0] & 0xFF, |
|
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|
3261 r[i + 1] & 0xFF, |
|
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|
3262 r[i + 2] & 0xFF, |
|
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|
3263 r[i + 3] & 0xFF); |
|
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|
3264 p += 10; |
|
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|
3265 } |
|
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|
3266 /* Should be impossible to overflow */ |
|
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|
3267 assert(p - buf <= Py_SIZE(u)); |
|
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|
3268 Py_DECREF(w); |
|
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3269 } else { |
|
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|
3270 *p++ = *s++; |
|
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|
3271 } |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
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|
3272 } |
|
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3273 len = p - buf; |
|
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3274 s = buf; |
|
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3275 } |
|
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|
3276 if (rawmode) |
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|
3277 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
|
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3278 else |
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|
3279 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
|
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|
3280 Py_XDECREF(u); |
|
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|
3281 return v; |
| 35742 | 3282 } |
| 3283 | |
| 3284 /* s is a Python string literal, including the bracketing quote characters, | |
|
43777
0d462d789b18
Merging the py3k-pep3137 branch back into the py3k branch.
Guido van Rossum <guido@python.org>
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|
3285 * and r &/or b prefixes (if any), and embedded escape sequences (if any). |
| 35742 | 3286 * parsestr parses it, and returns the decoded Python string object. |
| 3287 */ | |
| 3288 static PyObject * | |
|
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|
3289 parsestr(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3290 { |
|
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|
3291 size_t len; |
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|
3292 const char *s = STR(n); |
|
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|
3293 int quote = Py_CHARMASK(*s); |
|
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|
3294 int rawmode = 0; |
|
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|
3295 int need_encoding; |
|
43777
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Guido van Rossum <guido@python.org>
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|
3296 if (isalpha(quote)) { |
|
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|
3297 if (quote == 'b' || quote == 'B') { |
|
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|
3298 quote = *++s; |
|
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|
3299 *bytesmode = 1; |
|
61466
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|
3300 } |
|
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|
3301 if (quote == 'r' || quote == 'R') { |
|
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|
3302 quote = *++s; |
|
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|
3303 rawmode = 1; |
|
40450
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|
3304 } |
|
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|
3305 } |
|
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|
3306 if (quote != '\'' && quote != '\"') { |
|
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|
3307 PyErr_BadInternalCall(); |
|
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|
3308 return NULL; |
|
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|
3309 } |
|
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|
3310 s++; |
|
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|
3311 len = strlen(s); |
|
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|
3312 if (len > INT_MAX) { |
|
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|
3313 PyErr_SetString(PyExc_OverflowError, |
|
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|
3314 "string to parse is too long"); |
|
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|
3315 return NULL; |
|
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|
3316 } |
|
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|
3317 if (s[--len] != quote) { |
|
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|
3318 PyErr_BadInternalCall(); |
|
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|
3319 return NULL; |
|
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|
3320 } |
|
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|
3321 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
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|
3322 s += 2; |
|
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|
3323 len -= 2; |
|
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|
3324 if (s[--len] != quote || s[--len] != quote) { |
|
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|
3325 PyErr_BadInternalCall(); |
|
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|
3326 return NULL; |
| 40894 | 3327 } |
|
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|
3328 } |
|
46306
b10292eafb07
Reverted r62128 on Guido's orders
Benjamin Peterson <benjamin@python.org>
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|
3329 if (!*bytesmode && !rawmode) { |
|
46664
031dfe455585
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|
3330 return decode_unicode(c, s, len, rawmode, c->c_encoding); |
|
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|
3331 } |
|
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|
3332 if (*bytesmode) { |
|
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|
3333 /* Disallow non-ascii characters (but not escapes) */ |
|
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|
3334 const char *c; |
|
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|
3335 for (c = s; *c; c++) { |
|
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|
3336 if (Py_CHARMASK(*c) >= 0x80) { |
|
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|
3337 ast_error(n, "bytes can only contain ASCII " |
|
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|
3338 "literal characters."); |
|
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|
3339 return NULL; |
|
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|
3340 } |
|
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|
3341 } |
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|
3342 } |
|
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|
3343 need_encoding = (!*bytesmode && c->c_encoding != NULL && |
|
49539
481ad3d9ffd1
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|
3344 strcmp(c->c_encoding, "utf-8") != 0); |
|
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|
3345 if (rawmode || strchr(s, '\\') == NULL) { |
|
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|
3346 if (need_encoding) { |
|
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|
3347 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
|
43819
068655054b0d
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|
3348 if (u == NULL || !*bytesmode) |
|
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|
3349 return u; |
|
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|
3350 v = PyUnicode_AsEncodedString(u, c->c_encoding, NULL); |
|
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|
3351 Py_DECREF(u); |
|
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|
3352 return v; |
|
43819
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|
3353 } else if (*bytesmode) { |
|
47301
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Christian Heimes <christian@cheimes.de>
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|
3354 return PyBytes_FromStringAndSize(s, len); |
|
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|
3355 } else if (strcmp(c->c_encoding, "utf-8") == 0) { |
|
43819
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|
3356 return PyUnicode_FromStringAndSize(s, len); |
|
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|
3357 } else { |
|
43819
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3358 return PyUnicode_DecodeLatin1(s, len, NULL); |
|
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3359 } |
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3360 } |
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3361 return PyBytes_DecodeEscape(s, len, NULL, 1, |
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3362 need_encoding ? c->c_encoding : NULL); |
| 35742 | 3363 } |
| 3364 | |
|
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3365 /* Build a Python string object out of a STRING+ atom. This takes care of |
| 35742 | 3366 * compile-time literal catenation, calling parsestr() on each piece, and |
| 3367 * pasting the intermediate results together. | |
| 3368 */ | |
| 3369 static PyObject * | |
| 40894 | 3370 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3371 { |
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3372 PyObject *v; |
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3373 int i; |
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3374 REQ(CHILD(n, 0), STRING); |
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3375 v = parsestr(c, CHILD(n, 0), bytesmode); |
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3376 if (v != NULL) { |
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3377 /* String literal concatenation */ |
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3378 for (i = 1; i < NCH(n); i++) { |
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3379 PyObject *s; |
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3380 int subbm = 0; |
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3381 s = parsestr(c, CHILD(n, i), &subbm); |
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3382 if (s == NULL) |
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3383 goto onError; |
|
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3384 if (*bytesmode != subbm) { |
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3385 ast_error(n, "cannot mix bytes and nonbytes literals"); |
|
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3386 goto onError; |
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3387 } |
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3388 if (PyBytes_Check(v) && PyBytes_Check(s)) { |
|
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3389 PyBytes_ConcatAndDel(&v, s); |
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3390 if (v == NULL) |
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3391 goto onError; |
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3392 } |
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3393 else { |
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3394 PyObject *temp = PyUnicode_Concat(v, s); |
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3395 Py_DECREF(s); |
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3396 Py_DECREF(v); |
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3397 v = temp; |
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3398 if (v == NULL) |
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3399 goto onError; |
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3400 } |
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3401 } |
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3402 } |
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3403 return v; |
| 35742 | 3404 |
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3405 onError: |
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3406 Py_XDECREF(v); |
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3407 return NULL; |
| 35742 | 3408 } |