Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 55912:d4e3af343e32
Merged revisions 74464 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r74464 | benjamin.peterson | 2009-08-15 17:59:21 -0500 (Sat, 15 Aug 2009) | 4 lines
better col_offsets for "for" statements with tuple unpacking #6704
Patch from Frank Wierzbicki.
........
| author | Benjamin Peterson <benjamin@python.org> |
|---|---|
| date | Fri, 11 Sep 2009 22:36:20 +0000 |
| parents | c45e331238ae |
| children | 7ee140b7ef93 |
| 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 { | |
| 93 PyObject *u = Py_BuildValue("zi", errstr, LINENO(n)); | |
| 94 if (!u) | |
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95 return 0; |
| 35742 | 96 PyErr_SetObject(PyExc_SyntaxError, u); |
| 97 Py_DECREF(u); | |
| 98 return 0; | |
| 99 } | |
| 100 | |
| 101 static void | |
| 102 ast_error_finish(const char *filename) | |
| 103 { | |
| 104 PyObject *type, *value, *tback, *errstr, *loc, *tmp; | |
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105 long lineno; |
| 35742 | 106 |
| 107 assert(PyErr_Occurred()); | |
| 108 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
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109 return; |
| 35742 | 110 |
| 111 PyErr_Fetch(&type, &value, &tback); | |
| 112 errstr = PyTuple_GetItem(value, 0); | |
| 113 if (!errstr) | |
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114 return; |
| 35742 | 115 Py_INCREF(errstr); |
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116 lineno = PyLong_AsLong(PyTuple_GetItem(value, 1)); |
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117 if (lineno == -1) { |
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118 Py_DECREF(errstr); |
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119 return; |
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120 } |
| 35742 | 121 Py_DECREF(value); |
| 122 | |
| 123 loc = PyErr_ProgramText(filename, lineno); | |
| 124 if (!loc) { | |
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125 Py_INCREF(Py_None); |
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126 loc = Py_None; |
| 35742 | 127 } |
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128 tmp = Py_BuildValue("(zlOO)", filename, lineno, Py_None, loc); |
| 35742 | 129 Py_DECREF(loc); |
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130 if (!tmp) { |
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131 Py_DECREF(errstr); |
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132 return; |
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133 } |
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134 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 135 Py_DECREF(errstr); |
| 136 Py_DECREF(tmp); | |
| 137 if (!value) | |
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138 return; |
| 35742 | 139 PyErr_Restore(type, value, tback); |
| 140 } | |
| 141 | |
| 142 /* num_stmts() returns number of contained statements. | |
| 143 | |
| 144 Use this routine to determine how big a sequence is needed for | |
| 145 the statements in a parse tree. Its raison d'etre is this bit of | |
| 146 grammar: | |
| 147 | |
| 148 stmt: simple_stmt | compound_stmt | |
| 149 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 150 | |
| 151 A simple_stmt can contain multiple small_stmt elements joined | |
| 152 by semicolons. If the arg is a simple_stmt, the number of | |
| 153 small_stmt elements is returned. | |
| 154 */ | |
| 155 | |
| 156 static int | |
| 157 num_stmts(const node *n) | |
| 158 { | |
| 159 int i, l; | |
| 160 node *ch; | |
| 161 | |
| 162 switch (TYPE(n)) { | |
| 163 case single_input: | |
| 164 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 165 return 0; | |
| 166 else | |
| 167 return num_stmts(CHILD(n, 0)); | |
| 168 case file_input: | |
| 169 l = 0; | |
| 170 for (i = 0; i < NCH(n); i++) { | |
| 171 ch = CHILD(n, i); | |
| 172 if (TYPE(ch) == stmt) | |
| 173 l += num_stmts(ch); | |
| 174 } | |
| 175 return l; | |
| 176 case stmt: | |
| 177 return num_stmts(CHILD(n, 0)); | |
| 178 case compound_stmt: | |
| 179 return 1; | |
| 180 case simple_stmt: | |
| 181 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 182 case suite: | |
| 183 if (NCH(n) == 1) | |
| 184 return num_stmts(CHILD(n, 0)); | |
| 185 else { | |
| 186 l = 0; | |
| 187 for (i = 2; i < (NCH(n) - 1); i++) | |
| 188 l += num_stmts(CHILD(n, i)); | |
| 189 return l; | |
| 190 } | |
| 191 default: { | |
| 192 char buf[128]; | |
| 193 | |
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194 sprintf(buf, "Non-statement found: %d %d", |
| 35742 | 195 TYPE(n), NCH(n)); |
| 196 Py_FatalError(buf); | |
| 197 } | |
| 198 } | |
| 199 assert(0); | |
| 200 return 0; | |
| 201 } | |
| 202 | |
| 203 /* Transform the CST rooted at node * to the appropriate AST | |
| 204 */ | |
| 205 | |
| 206 mod_ty | |
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207 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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208 PyArena *arena) |
| 35742 | 209 { |
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210 int i, j, k, num; |
| 35742 | 211 asdl_seq *stmts = NULL; |
| 212 stmt_ty s; | |
| 213 node *ch; | |
| 214 struct compiling c; | |
| 215 | |
| 216 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
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217 c.c_encoding = "utf-8"; |
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218 if (TYPE(n) == encoding_decl) { |
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219 #if 0 |
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220 ast_error(n, "encoding declaration in Unicode string"); |
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221 goto error; |
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222 #endif |
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223 n = CHILD(n, 0); |
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224 } |
| 35742 | 225 } else if (TYPE(n) == encoding_decl) { |
| 226 c.c_encoding = STR(n); | |
| 227 n = CHILD(n, 0); | |
| 228 } else { | |
| 42403 | 229 /* PEP 3120 */ |
| 230 c.c_encoding = "utf-8"; | |
| 35742 | 231 } |
|
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232 c.c_arena = arena; |
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233 c.c_filename = filename; |
| 35742 | 234 |
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235 k = 0; |
| 35742 | 236 switch (TYPE(n)) { |
| 237 case file_input: | |
|
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238 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 239 if (!stmts) |
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240 return NULL; |
| 35742 | 241 for (i = 0; i < NCH(n) - 1; i++) { |
| 242 ch = CHILD(n, i); | |
| 243 if (TYPE(ch) == NEWLINE) | |
| 244 continue; | |
| 245 REQ(ch, stmt); | |
| 246 num = num_stmts(ch); | |
| 247 if (num == 1) { | |
| 248 s = ast_for_stmt(&c, ch); | |
| 249 if (!s) | |
| 250 goto error; | |
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251 asdl_seq_SET(stmts, k++, s); |
| 35742 | 252 } |
| 253 else { | |
| 254 ch = CHILD(ch, 0); | |
| 255 REQ(ch, simple_stmt); | |
| 256 for (j = 0; j < num; j++) { | |
| 257 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 258 if (!s) | |
| 259 goto error; | |
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260 asdl_seq_SET(stmts, k++, s); |
| 35742 | 261 } |
| 262 } | |
| 263 } | |
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264 return Module(stmts, arena); |
| 35742 | 265 case eval_input: { |
| 266 expr_ty testlist_ast; | |
| 267 | |
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268 /* XXX Why not comp_for here? */ |
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269 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 270 if (!testlist_ast) |
| 271 goto error; | |
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272 return Expression(testlist_ast, arena); |
| 35742 | 273 } |
| 274 case single_input: | |
| 275 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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276 stmts = asdl_seq_new(1, arena); |
| 35742 | 277 if (!stmts) |
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278 goto error; |
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279 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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280 arena)); |
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281 if (!asdl_seq_GET(stmts, 0)) |
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282 goto error; |
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283 return Interactive(stmts, arena); |
| 35742 | 284 } |
| 285 else { | |
| 286 n = CHILD(n, 0); | |
| 287 num = num_stmts(n); | |
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288 stmts = asdl_seq_new(num, arena); |
| 35742 | 289 if (!stmts) |
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290 goto error; |
| 35742 | 291 if (num == 1) { |
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292 s = ast_for_stmt(&c, n); |
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293 if (!s) |
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294 goto error; |
| 35742 | 295 asdl_seq_SET(stmts, 0, s); |
| 296 } | |
| 297 else { | |
| 298 /* Only a simple_stmt can contain multiple statements. */ | |
| 299 REQ(n, simple_stmt); | |
| 300 for (i = 0; i < NCH(n); i += 2) { | |
| 301 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 302 break; | |
| 303 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 304 if (!s) | |
| 305 goto error; | |
| 306 asdl_seq_SET(stmts, i / 2, s); | |
| 307 } | |
| 308 } | |
| 309 | |
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310 return Interactive(stmts, arena); |
| 35742 | 311 } |
| 312 default: | |
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313 PyErr_Format(PyExc_SystemError, |
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314 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 315 goto error; |
| 316 } | |
| 317 error: | |
| 318 ast_error_finish(filename); | |
| 319 return NULL; | |
| 320 } | |
| 321 | |
| 322 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 323 */ | |
| 324 | |
| 325 static operator_ty | |
| 326 get_operator(const node *n) | |
| 327 { | |
| 328 switch (TYPE(n)) { | |
| 329 case VBAR: | |
| 330 return BitOr; | |
| 331 case CIRCUMFLEX: | |
| 332 return BitXor; | |
| 333 case AMPER: | |
| 334 return BitAnd; | |
| 335 case LEFTSHIFT: | |
| 336 return LShift; | |
| 337 case RIGHTSHIFT: | |
| 338 return RShift; | |
| 339 case PLUS: | |
| 340 return Add; | |
| 341 case MINUS: | |
| 342 return Sub; | |
| 343 case STAR: | |
| 344 return Mult; | |
| 345 case SLASH: | |
| 346 return Div; | |
| 347 case DOUBLESLASH: | |
| 348 return FloorDiv; | |
| 349 case PERCENT: | |
| 350 return Mod; | |
| 351 default: | |
|
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352 return (operator_ty)0; |
| 35742 | 353 } |
| 354 } | |
| 355 | |
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356 static const char* FORBIDDEN[] = { |
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357 "None", |
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358 "True", |
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359 "False", |
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360 NULL, |
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361 }; |
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362 |
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363 static int |
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364 forbidden_name(identifier name, const node *n, int full_checks) |
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365 { |
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366 assert(PyUnicode_Check(name)); |
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367 if (PyUnicode_CompareWithASCIIString(name, "__debug__") == 0) { |
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368 ast_error(n, "assignment to keyword"); |
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369 return 1; |
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370 } |
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371 if (full_checks) { |
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372 const char **p; |
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373 for (p = FORBIDDEN; *p; p++) { |
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374 if (PyUnicode_CompareWithASCIIString(name, *p) == 0) { |
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375 ast_error(n, "assignment to keyword"); |
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376 return 1; |
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377 } |
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378 } |
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379 } |
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380 return 0; |
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381 } |
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382 |
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383 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 384 |
| 385 Only sets context for expr kinds that "can appear in assignment context" | |
| 386 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 387 an appropriate syntax error and returns false. | |
| 388 */ | |
| 389 | |
| 390 static int | |
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391 set_context(struct compiling *c, expr_ty e, expr_context_ty ctx, const node *n) |
| 35742 | 392 { |
| 393 asdl_seq *s = NULL; | |
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394 /* If a particular expression type can't be used for assign / delete, |
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395 set expr_name to its name and an error message will be generated. |
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396 */ |
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397 const char* expr_name = NULL; |
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398 |
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399 /* The ast defines augmented store and load contexts, but the |
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400 implementation here doesn't actually use them. The code may be |
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401 a little more complex than necessary as a result. It also means |
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402 that expressions in an augmented assignment have a Store context. |
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403 Consider restructuring so that augmented assignment uses |
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404 set_context(), too. |
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405 */ |
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406 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 407 |
| 408 switch (e->kind) { | |
| 409 case Attribute_kind: | |
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410 e->v.Attribute.ctx = ctx; |
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411 if (ctx == Store && forbidden_name(e->v.Attribute.attr, n, 1)) |
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412 return 0; |
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413 break; |
| 35742 | 414 case Subscript_kind: |
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415 e->v.Subscript.ctx = ctx; |
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416 break; |
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417 case Starred_kind: |
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418 e->v.Starred.ctx = ctx; |
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419 if (!set_context(c, e->v.Starred.value, ctx, n)) |
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420 return 0; |
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421 break; |
| 35742 | 422 case Name_kind: |
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423 if (ctx == Store) { |
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424 if (forbidden_name(e->v.Name.id, n, 1)) |
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425 return 0; /* forbidden_name() calls ast_error() */ |
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426 } |
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427 e->v.Name.ctx = ctx; |
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430 e->v.List.ctx = ctx; |
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431 s = e->v.List.elts; |
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434 if (asdl_seq_LEN(e->v.Tuple.elts)) { |
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435 e->v.Tuple.ctx = ctx; |
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436 s = e->v.Tuple.elts; |
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437 } |
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438 else { |
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439 expr_name = "()"; |
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440 } |
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442 case Lambda_kind: |
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443 expr_name = "lambda"; |
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444 break; |
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446 expr_name = "function call"; |
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448 case BoolOp_kind: |
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450 case UnaryOp_kind: |
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451 expr_name = "operator"; |
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452 break; |
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454 expr_name = "generator expression"; |
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456 case Yield_kind: |
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457 expr_name = "yield expression"; |
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458 break; |
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459 case ListComp_kind: |
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460 expr_name = "list comprehension"; |
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461 break; |
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462 case SetComp_kind: |
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463 expr_name = "set comprehension"; |
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464 break; |
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465 case DictComp_kind: |
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466 expr_name = "dict comprehension"; |
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468 case Dict_kind: |
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469 case Set_kind: |
| 35742 | 470 case Num_kind: |
| 471 case Str_kind: | |
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472 expr_name = "literal"; |
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473 break; |
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474 case Ellipsis_kind: |
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475 expr_name = "Ellipsis"; |
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476 break; |
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477 case Compare_kind: |
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478 expr_name = "comparison"; |
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479 break; |
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480 case IfExp_kind: |
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481 expr_name = "conditional expression"; |
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482 break; |
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483 default: |
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484 PyErr_Format(PyExc_SystemError, |
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485 "unexpected expression in assignment %d (line %d)", |
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486 e->kind, e->lineno); |
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487 return 0; |
| 35742 | 488 } |
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489 /* Check for error string set by switch */ |
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490 if (expr_name) { |
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491 char buf[300]; |
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492 PyOS_snprintf(buf, sizeof(buf), |
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493 "can't %s %s", |
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494 ctx == Store ? "assign to" : "delete", |
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495 expr_name); |
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496 return ast_error(n, buf); |
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497 } |
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498 |
| 35742 | 499 /* If the LHS is a list or tuple, we need to set the assignment |
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500 context for all the contained elements. |
| 35742 | 501 */ |
| 502 if (s) { | |
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503 int i; |
| 35742 | 504 |
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505 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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506 if (!set_context(c, (expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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507 return 0; |
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508 } |
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| 510 return 1; | |
| 511 } | |
| 512 | |
| 513 static operator_ty | |
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514 ast_for_augassign(struct compiling *c, const node *n) |
| 35742 | 515 { |
| 516 REQ(n, augassign); | |
| 517 n = CHILD(n, 0); | |
| 518 switch (STR(n)[0]) { | |
| 519 case '+': | |
| 520 return Add; | |
| 521 case '-': | |
| 522 return Sub; | |
| 523 case '/': | |
| 524 if (STR(n)[1] == '/') | |
| 525 return FloorDiv; | |
| 526 else | |
| 527 return Div; | |
| 528 case '%': | |
| 529 return Mod; | |
| 530 case '<': | |
| 531 return LShift; | |
| 532 case '>': | |
| 533 return RShift; | |
| 534 case '&': | |
| 535 return BitAnd; | |
| 536 case '^': | |
| 537 return BitXor; | |
| 538 case '|': | |
| 539 return BitOr; | |
| 540 case '*': | |
| 541 if (STR(n)[1] == '*') | |
| 542 return Pow; | |
| 543 else | |
| 544 return Mult; | |
| 545 default: | |
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546 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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547 return (operator_ty)0; |
| 35742 | 548 } |
| 549 } | |
| 550 | |
| 551 static cmpop_ty | |
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552 ast_for_comp_op(struct compiling *c, const node *n) |
| 35742 | 553 { |
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554 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 555 |'is' 'not' |
| 556 */ | |
| 557 REQ(n, comp_op); | |
| 558 if (NCH(n) == 1) { | |
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559 n = CHILD(n, 0); |
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560 switch (TYPE(n)) { |
| 35742 | 561 case LESS: |
| 562 return Lt; | |
| 563 case GREATER: | |
| 564 return Gt; | |
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565 case EQEQUAL: /* == */ |
| 35742 | 566 return Eq; |
| 567 case LESSEQUAL: | |
| 568 return LtE; | |
| 569 case GREATEREQUAL: | |
| 570 return GtE; | |
| 571 case NOTEQUAL: | |
| 572 return NotEq; | |
| 573 case NAME: | |
| 574 if (strcmp(STR(n), "in") == 0) | |
| 575 return In; | |
| 576 if (strcmp(STR(n), "is") == 0) | |
| 577 return Is; | |
| 578 default: | |
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579 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 580 STR(n)); |
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581 return (cmpop_ty)0; |
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582 } |
| 35742 | 583 } |
| 584 else if (NCH(n) == 2) { | |
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585 /* handle "not in" and "is not" */ |
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586 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 587 case NAME: |
| 588 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 589 return NotIn; | |
| 590 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 591 return IsNot; | |
| 592 default: | |
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593 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 594 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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595 return (cmpop_ty)0; |
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596 } |
| 35742 | 597 } |
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598 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 599 NCH(n)); |
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600 return (cmpop_ty)0; |
| 35742 | 601 } |
| 602 | |
| 603 static asdl_seq * | |
| 604 seq_for_testlist(struct compiling *c, const node *n) | |
| 605 { | |
| 606 /* testlist: test (',' test)* [','] */ | |
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607 asdl_seq *seq; |
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608 expr_ty expression; |
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609 int i; |
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610 assert(TYPE(n) == testlist || TYPE(n) == testlist_comp); |
| 35742 | 611 |
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612 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 613 if (!seq) |
| 614 return NULL; | |
| 615 | |
| 616 for (i = 0; i < NCH(n); i += 2) { | |
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617 assert(TYPE(CHILD(n, i)) == test || TYPE(CHILD(n, i)) == test_nocond); |
| 35742 | 618 |
| 619 expression = ast_for_expr(c, CHILD(n, i)); | |
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620 if (!expression) |
| 35742 | 621 return NULL; |
| 622 | |
| 623 assert(i / 2 < seq->size); | |
| 624 asdl_seq_SET(seq, i / 2, expression); | |
| 625 } | |
| 626 return seq; | |
| 627 } | |
| 628 | |
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629 static arg_ty |
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630 compiler_arg(struct compiling *c, const node *n) |
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631 { |
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632 identifier name; |
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633 expr_ty annotation = NULL; |
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634 node *ch; |
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635 |
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636 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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637 ch = CHILD(n, 0); |
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638 name = NEW_IDENTIFIER(ch); |
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639 if (!name) |
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640 return NULL; |
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641 if (forbidden_name(name, ch, 0)) |
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642 return NULL; |
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643 |
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644 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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645 annotation = ast_for_expr(c, CHILD(n, 2)); |
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646 if (!annotation) |
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647 return NULL; |
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648 } |
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649 |
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650 return arg(name, annotation, c->c_arena); |
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651 #if 0 |
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652 result = Tuple(args, Store, LINENO(n), n->n_col_offset, c->c_arena); |
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653 if (!set_context(c, result, Store, n)) |
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654 return NULL; |
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655 return result; |
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656 #endif |
| 35742 | 657 } |
| 658 | |
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659 /* returns -1 if failed to handle keyword only arguments |
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660 returns new position to keep processing if successful |
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661 (',' tfpdef ['=' test])* |
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662 ^^^ |
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663 start pointing here |
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664 */ |
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665 static int |
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666 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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667 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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668 { |
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669 PyObject *argname; |
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670 node *ch; |
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671 expr_ty expression, annotation; |
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672 arg_ty arg; |
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673 int i = start; |
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674 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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675 |
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676 if (kwonlyargs == NULL) { |
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677 ast_error(CHILD(n, start), "named arguments must follow bare *"); |
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678 return -1; |
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679 } |
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680 assert(kwdefaults != NULL); |
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681 while (i < NCH(n)) { |
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682 ch = CHILD(n, i); |
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683 switch (TYPE(ch)) { |
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684 case vfpdef: |
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685 case tfpdef: |
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686 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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687 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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688 asdl_seq_SET(kwdefaults, j, expression); |
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689 i += 2; /* '=' and test */ |
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690 } |
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691 else { /* setting NULL if no default value exists */ |
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692 asdl_seq_SET(kwdefaults, j, NULL); |
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693 } |
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694 if (NCH(ch) == 3) { |
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695 /* ch is NAME ':' test */ |
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696 annotation = ast_for_expr(c, CHILD(ch, 2)); |
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697 if (!annotation) { |
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698 ast_error(ch, "expected expression"); |
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699 goto error; |
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700 } |
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701 } |
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702 else { |
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703 annotation = NULL; |
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704 } |
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705 ch = CHILD(ch, 0); |
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706 argname = NEW_IDENTIFIER(ch); |
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707 if (!argname) |
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Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
708 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
|
709 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
|
710 goto error; |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
711 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
|
712 if (!arg) |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
713 goto error; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
714 asdl_seq_SET(kwonlyargs, j++, arg); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
715 i += 2; /* the name and the comma */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
716 break; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
717 case DOUBLESTAR: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
718 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
719 default: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
720 ast_error(ch, "unexpected node"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
721 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
722 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
723 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
724 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
725 error: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
726 return -1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
727 } |
| 35742 | 728 |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
729 /* Create AST for argument list. */ |
| 35742 | 730 |
| 731 static arguments_ty | |
| 732 ast_for_arguments(struct compiling *c, const node *n) | |
| 733 { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
734 /* 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
|
735 and varargslist (lambda definition). |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
736 |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
737 parameters: '(' [typedargslist] ')' |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
738 typedargslist: ((tfpdef ['=' test] ',')* |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
739 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
740 | '**' tfpdef) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
741 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
742 tfpdef: NAME [':' test] |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
743 varargslist: ((vfpdef ['=' test] ',')* |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
744 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
745 | '**' vfpdef) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
746 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
747 vfpdef: NAME |
| 35742 | 748 */ |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
749 int i, j, k, nposargs = 0, nkwonlyargs = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
750 int nposdefaults = 0, found_default = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
751 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 752 identifier vararg = NULL, kwarg = NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
753 arg_ty arg; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
754 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 755 node *ch; |
| 756 | |
| 757 if (TYPE(n) == parameters) { | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
758 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
|
759 return arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
760 NULL, c->c_arena); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
761 n = CHILD(n, 1); |
| 35742 | 762 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
763 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 764 |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
765 /* 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
|
766 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
|
767 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
|
768 */ |
| 35742 | 769 for (i = 0; i < NCH(n); i++) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
770 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
771 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
|
772 /* skip star */ |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
773 i++; |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
774 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
|
775 (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
|
776 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
|
777 i++; |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
778 } |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
779 break; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
780 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
781 if (TYPE(ch) == DOUBLESTAR) break; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
782 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
|
783 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
784 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
785 /* count the number of keyword only args & |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
786 defaults for keyword only args */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
787 for ( ; i < NCH(n); ++i) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
788 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
789 if (TYPE(ch) == DOUBLESTAR) break; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
790 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 791 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
792 posargs = (nposargs ? asdl_seq_new(nposargs, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
793 if (!posargs && nposargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
794 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
795 kwonlyargs = (nkwonlyargs ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
796 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
|
797 if (!kwonlyargs && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
798 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
799 posdefaults = (nposdefaults ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
800 asdl_seq_new(nposdefaults, c->c_arena) : NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
801 if (!posdefaults && nposdefaults) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
802 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
803 /* The length of kwonlyargs and kwdefaults are same |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
804 since we set NULL as default for keyword only argument w/o default |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
805 - we have sequence data structure, but no dictionary */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
806 kwdefaults = (nkwonlyargs ? |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
807 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
|
808 if (!kwdefaults && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
809 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
810 |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
811 if (nposargs + nkwonlyargs > 255) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
812 ast_error(n, "more than 255 arguments"); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
813 return NULL; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
814 } |
| 35742 | 815 |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
816 /* tfpdef: NAME [':' test] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
817 vfpdef: NAME |
| 35742 | 818 */ |
| 819 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
820 j = 0; /* index for defaults */ |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
821 k = 0; /* index for args */ |
| 35742 | 822 while (i < NCH(n)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
823 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
824 switch (TYPE(ch)) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
825 case tfpdef: |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
826 case vfpdef: |
| 35742 | 827 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 828 anything other than EQUAL or a comma? */ | |
| 829 /* XXX Should NCH(n) check be made a separate check? */ | |
| 830 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
831 expr_ty expression = ast_for_expr(c, CHILD(n, i + 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
832 if (!expression) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
833 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
834 assert(posdefaults != NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
835 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 836 i += 2; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
837 found_default = 1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
838 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
839 else if (found_default) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
840 ast_error(n, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
841 "non-default argument follows default argument"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
842 goto error; |
| 35742 | 843 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
844 arg = compiler_arg(c, ch); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
845 if (!arg) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
846 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
847 asdl_seq_SET(posargs, k++, arg); |
| 35742 | 848 i += 2; /* the name and the comma */ |
| 849 break; | |
| 850 case STAR: | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
851 if (i+1 >= NCH(n)) { |
|
44246
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
852 ast_error(CHILD(n, i), |
|
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
853 "named arguments must follow bare *"); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
854 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
855 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
856 ch = CHILD(n, i+1); /* tfpdef or COMMA */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
857 if (TYPE(ch) == COMMA) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
858 int res = 0; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
859 i += 2; /* now follows keyword only arguments */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
860 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
861 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
862 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
863 i = res; /* res has new position to process */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
864 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
865 else { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
866 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
49844
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
867 if (!vararg) |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
868 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
|
869 if (forbidden_name(vararg, CHILD(ch, 0), 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
|
870 return NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
871 if (NCH(ch) > 1) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
872 /* there is an annotation on the vararg */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
873 varargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
874 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
875 i += 3; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
876 if (i < NCH(n) && (TYPE(CHILD(n, i)) == tfpdef |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
877 || TYPE(CHILD(n, i)) == vfpdef)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
878 int res = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
879 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
880 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
881 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
882 i = res; /* res has new position to process */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
883 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
884 } |
| 35742 | 885 break; |
| 886 case DOUBLESTAR: | |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
887 ch = CHILD(n, i+1); /* tfpdef */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
888 assert(TYPE(ch) == tfpdef || TYPE(ch) == vfpdef); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
889 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
890 if (NCH(ch) > 1) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
891 /* there is an annotation on the kwarg */ |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
892 kwargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
893 } |
|
49844
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
894 if (!kwarg) |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
895 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
|
896 if (forbidden_name(kwarg, CHILD(ch, 0), 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
|
897 goto error; |
| 35742 | 898 i += 3; |
| 899 break; | |
| 900 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
901 PyErr_Format(PyExc_SystemError, |
| 35742 | 902 "unexpected node in varargslist: %d @ %d", |
| 903 TYPE(ch), i); | |
| 904 goto error; | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
905 } |
| 35742 | 906 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
907 return arguments(posargs, vararg, varargannotation, kwonlyargs, kwarg, |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
908 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 909 error: |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
910 Py_XDECREF(vararg); |
|
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
911 Py_XDECREF(kwarg); |
| 35742 | 912 return NULL; |
| 913 } | |
| 914 | |
| 915 static expr_ty | |
| 916 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 917 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
918 expr_ty e; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
919 identifier id; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
920 int lineno, col_offset; |
| 35742 | 921 int i; |
| 922 | |
| 923 REQ(n, dotted_name); | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
924 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
925 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
926 col_offset = n->n_col_offset; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
927 |
| 35742 | 928 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 929 if (!id) | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
930 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
931 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 932 if (!e) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
933 return NULL; |
| 35742 | 934 |
| 935 for (i = 2; i < NCH(n); i+=2) { | |
| 936 id = NEW_IDENTIFIER(CHILD(n, i)); | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
937 if (!id) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
938 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
939 e = Attribute(e, id, Load, lineno, col_offset, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
940 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
941 return NULL; |
| 35742 | 942 } |
| 943 | |
| 944 return e; | |
| 945 } | |
| 946 | |
| 947 static expr_ty | |
| 948 ast_for_decorator(struct compiling *c, const node *n) | |
| 949 { | |
| 950 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 951 expr_ty d = NULL; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
952 expr_ty name_expr; |
| 35742 | 953 |
| 954 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
955 REQ(CHILD(n, 0), AT); |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
956 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 957 |
| 958 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 959 if (!name_expr) | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
960 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
961 |
| 35742 | 962 if (NCH(n) == 3) { /* No arguments */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
963 d = name_expr; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
964 name_expr = NULL; |
| 35742 | 965 } |
| 966 else if (NCH(n) == 5) { /* Call with no arguments */ | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
967 d = Call(name_expr, NULL, NULL, NULL, NULL, 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
|
968 n->n_col_offset, c->c_arena); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
969 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
970 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
971 name_expr = NULL; |
| 35742 | 972 } |
| 973 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
974 d = ast_for_call(c, CHILD(n, 3), name_expr); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
975 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
976 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
977 name_expr = NULL; |
| 35742 | 978 } |
| 979 | |
| 980 return d; | |
| 981 } | |
| 982 | |
| 983 static asdl_seq* | |
| 984 ast_for_decorators(struct compiling *c, const node *n) | |
| 985 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
986 asdl_seq* decorator_seq; |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
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987 expr_ty d; |
| 35742 | 988 int i; |
| 989 | |
| 990 REQ(n, decorators); | |
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991 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 992 if (!decorator_seq) |
| 993 return NULL; | |
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994 |
| 35742 | 995 for (i = 0; i < NCH(n); i++) { |
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996 d = ast_for_decorator(c, CHILD(n, i)); |
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997 if (!d) |
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998 return NULL; |
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999 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 1000 } |
| 1001 return decorator_seq; | |
| 1002 } | |
| 1003 | |
| 1004 static stmt_ty | |
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1005 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 1006 { |
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1007 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
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1008 identifier name; |
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1009 arguments_ty args; |
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1010 asdl_seq *body; |
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1011 expr_ty returns = NULL; |
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1012 int name_i = 1; |
| 35742 | 1013 |
| 1014 REQ(n, funcdef); | |
| 1015 | |
| 1016 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 1017 if (!name) | |
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1018 return NULL; |
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1019 if (forbidden_name(name, CHILD(n, name_i), 0)) |
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1020 return NULL; |
| 35742 | 1021 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 1022 if (!args) | |
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1023 return NULL; |
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1024 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
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1025 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
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1026 if (!returns) |
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1027 return NULL; |
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1028 name_i += 2; |
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1029 } |
| 35742 | 1030 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 1031 if (!body) | |
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1032 return NULL; |
| 35742 | 1033 |
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1034 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
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1035 n->n_col_offset, c->c_arena); |
| 35742 | 1036 } |
| 1037 | |
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1038 static stmt_ty |
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1039 ast_for_decorated(struct compiling *c, const node *n) |
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1040 { |
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1041 /* decorated: decorators (classdef | funcdef) */ |
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1042 stmt_ty thing = NULL; |
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1043 asdl_seq *decorator_seq = NULL; |
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1044 |
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1045 REQ(n, decorated); |
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1046 |
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1047 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
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1048 if (!decorator_seq) |
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1049 return NULL; |
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1050 |
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1051 assert(TYPE(CHILD(n, 1)) == funcdef || |
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1052 TYPE(CHILD(n, 1)) == classdef); |
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1053 |
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1054 if (TYPE(CHILD(n, 1)) == funcdef) { |
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1055 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
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1056 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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1057 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
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1058 } |
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1059 /* we count the decorators in when talking about the class' or |
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1060 * function's line number */ |
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1061 if (thing) { |
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1062 thing->lineno = LINENO(n); |
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1063 thing->col_offset = n->n_col_offset; |
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1064 } |
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1065 return thing; |
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1066 } |
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1067 |
| 35742 | 1068 static expr_ty |
| 1069 ast_for_lambdef(struct compiling *c, const node *n) | |
| 1070 { | |
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1071 /* lambdef: 'lambda' [varargslist] ':' test |
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1072 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1073 arguments_ty args; |
| 1074 expr_ty expression; | |
| 1075 | |
| 1076 if (NCH(n) == 3) { | |
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1077 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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1078 NULL, c->c_arena); |
| 35742 | 1079 if (!args) |
| 1080 return NULL; | |
| 1081 expression = ast_for_expr(c, CHILD(n, 2)); | |
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1082 if (!expression) |
| 35742 | 1083 return NULL; |
| 1084 } | |
| 1085 else { | |
| 1086 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1087 if (!args) | |
| 1088 return NULL; | |
| 1089 expression = ast_for_expr(c, CHILD(n, 3)); | |
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1090 if (!expression) |
| 35742 | 1091 return NULL; |
| 1092 } | |
| 1093 | |
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1094 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1095 } |
| 1096 | |
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1097 static expr_ty |
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1098 ast_for_ifexpr(struct compiling *c, const node *n) |
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1099 { |
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1100 /* test: or_test 'if' or_test 'else' test */ |
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1101 expr_ty expression, body, orelse; |
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1102 |
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1103 assert(NCH(n) == 5); |
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1104 body = ast_for_expr(c, CHILD(n, 0)); |
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1105 if (!body) |
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1106 return NULL; |
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1107 expression = ast_for_expr(c, CHILD(n, 2)); |
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1108 if (!expression) |
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1109 return NULL; |
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1110 orelse = ast_for_expr(c, CHILD(n, 4)); |
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1111 if (!orelse) |
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1112 return NULL; |
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1113 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
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1114 c->c_arena); |
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1115 } |
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1116 |
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1117 /* |
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1118 Count the number of 'for' loops in a comprehension. |
| 35742 | 1119 |
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1120 Helper for ast_for_comprehension(). |
| 35742 | 1121 */ |
| 1122 | |
| 1123 static int | |
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1124 count_comp_fors(struct compiling *c, const node *n) |
| 35742 | 1125 { |
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1126 int n_fors = 0; |
| 35742 | 1127 |
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1128 count_comp_for: |
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1129 n_fors++; |
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1130 REQ(n, comp_for); |
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1131 if (NCH(n) == 5) |
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1132 n = CHILD(n, 4); |
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1133 else |
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1134 return n_fors; |
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1135 count_comp_iter: |
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1136 REQ(n, comp_iter); |
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1137 n = CHILD(n, 0); |
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1138 if (TYPE(n) == comp_for) |
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1139 goto count_comp_for; |
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1140 else if (TYPE(n) == comp_if) { |
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1141 if (NCH(n) == 3) { |
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1142 n = CHILD(n, 2); |
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1143 goto count_comp_iter; |
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1144 } |
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1145 else |
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1146 return n_fors; |
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1147 } |
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1148 |
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1149 /* Should never be reached */ |
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1150 PyErr_SetString(PyExc_SystemError, |
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1151 "logic error in count_comp_fors"); |
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1152 return -1; |
| 35742 | 1153 } |
| 1154 | |
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1155 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1156 |
|
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1157 Helper for ast_for_comprehension(). |
| 35742 | 1158 */ |
| 1159 | |
| 1160 static int | |
|
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1161 count_comp_ifs(struct compiling *c, const node *n) |
| 35742 | 1162 { |
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1163 int n_ifs = 0; |
| 35742 | 1164 |
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1165 while (1) { |
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1166 REQ(n, comp_iter); |
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1167 if (TYPE(CHILD(n, 0)) == comp_for) |
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1168 return n_ifs; |
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1169 n = CHILD(n, 0); |
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1170 REQ(n, comp_if); |
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1171 n_ifs++; |
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1172 if (NCH(n) == 2) |
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1173 return n_ifs; |
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1174 n = CHILD(n, 2); |
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1175 } |
| 35742 | 1176 } |
| 1177 | |
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1178 static asdl_seq * |
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1179 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1180 { |
| 1181 int i, n_fors; | |
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1182 asdl_seq *comps; |
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1183 |
|
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1184 n_fors = count_comp_fors(c, n); |
| 35742 | 1185 if (n_fors == -1) |
| 1186 return NULL; | |
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1187 |
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1188 comps = asdl_seq_new(n_fors, c->c_arena); |
|
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1189 if (!comps) |
| 35742 | 1190 return NULL; |
|
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1191 |
| 35742 | 1192 for (i = 0; i < n_fors; i++) { |
|
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1193 comprehension_ty comp; |
| 35742 | 1194 asdl_seq *t; |
|
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1195 expr_ty expression, first; |
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1196 node *for_ch; |
| 35742 | 1197 |
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1198 REQ(n, comp_for); |
| 35742 | 1199 |
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1200 for_ch = CHILD(n, 1); |
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1201 t = ast_for_exprlist(c, for_ch, Store); |
|
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1202 if (!t) |
| 35742 | 1203 return NULL; |
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1204 expression = ast_for_expr(c, CHILD(n, 3)); |
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1205 if (!expression) |
| 35742 | 1206 return NULL; |
|
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1207 |
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1208 /* Check the # of children rather than the length of t, since |
|
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1209 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
|
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1210 first = (expr_ty)asdl_seq_GET(t, 0); |
|
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1211 if (NCH(for_ch) == 1) |
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1212 comp = comprehension(first, expression, NULL, c->c_arena); |
| 35742 | 1213 else |
|
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1214 comp = comprehension(Tuple(t, Store, first->lineno, first->col_offset, |
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1215 c->c_arena), |
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1216 expression, NULL, c->c_arena); |
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1217 if (!comp) |
| 35742 | 1218 return NULL; |
|
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1219 |
|
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1220 if (NCH(n) == 5) { |
| 35742 | 1221 int j, n_ifs; |
| 1222 asdl_seq *ifs; | |
| 1223 | |
|
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1224 n = CHILD(n, 4); |
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1225 n_ifs = count_comp_ifs(c, n); |
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1226 if (n_ifs == -1) |
| 35742 | 1227 return NULL; |
|
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1228 |
|
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1229 ifs = asdl_seq_new(n_ifs, c->c_arena); |
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1230 if (!ifs) |
| 35742 | 1231 return NULL; |
|
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1232 |
| 35742 | 1233 for (j = 0; j < n_ifs; j++) { |
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1234 REQ(n, comp_iter); |
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1235 n = CHILD(n, 0); |
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1236 REQ(n, comp_if); |
| 35742 | 1237 |
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1238 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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1239 if (!expression) |
|
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1240 return NULL; |
|
36718
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1241 asdl_seq_SET(ifs, j, expression); |
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1242 if (NCH(n) == 3) |
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1243 n = CHILD(n, 2); |
| 35742 | 1244 } |
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1245 /* on exit, must guarantee that n is a comp_for */ |
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1246 if (TYPE(n) == comp_iter) |
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1247 n = CHILD(n, 0); |
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1248 comp->ifs = ifs; |
| 35742 | 1249 } |
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1250 asdl_seq_SET(comps, i, comp); |
| 35742 | 1251 } |
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1252 return comps; |
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1253 } |
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1254 |
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1255 static expr_ty |
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1256 ast_for_itercomp(struct compiling *c, const node *n, int type) |
|
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1257 { |
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1258 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1259 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1260 expr_ty elt; |
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1261 asdl_seq *comps; |
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1262 |
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1263 assert(NCH(n) > 1); |
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1264 |
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1265 elt = ast_for_expr(c, CHILD(n, 0)); |
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1266 if (!elt) |
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1267 return NULL; |
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1268 |
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1269 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1270 if (!comps) |
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1271 return NULL; |
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1272 |
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1273 if (type == COMP_GENEXP) |
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1274 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1275 else if (type == COMP_LISTCOMP) |
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1276 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1277 else if (type == COMP_SETCOMP) |
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1278 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1279 else |
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1280 /* Should never happen */ |
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1281 return NULL; |
| 35742 | 1282 } |
| 1283 | |
| 1284 static expr_ty | |
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1285 ast_for_dictcomp(struct compiling *c, const node *n) |
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1286 { |
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1287 expr_ty key, value; |
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1288 asdl_seq *comps; |
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1289 |
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1290 assert(NCH(n) > 3); |
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1291 REQ(CHILD(n, 1), COLON); |
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1292 |
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1293 key = ast_for_expr(c, CHILD(n, 0)); |
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1294 if (!key) |
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1295 return NULL; |
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1296 value = ast_for_expr(c, CHILD(n, 2)); |
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1297 if (!value) |
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1298 return NULL; |
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1299 |
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1300 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1301 if (!comps) |
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1302 return NULL; |
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1303 |
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1304 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1305 } |
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1306 |
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1307 static expr_ty |
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1308 ast_for_genexp(struct compiling *c, const node *n) |
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1309 { |
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1310 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1311 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1312 } |
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1313 |
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1314 static expr_ty |
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1315 ast_for_listcomp(struct compiling *c, const node *n) |
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1316 { |
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1317 assert(TYPE(n) == (testlist_comp)); |
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1318 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1319 } |
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1320 |
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1321 static expr_ty |
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1322 ast_for_setcomp(struct compiling *c, const node *n) |
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1323 { |
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1324 assert(TYPE(n) == (dictorsetmaker)); |
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1325 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1326 } |
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1327 |
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1328 |
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1329 static expr_ty |
| 35742 | 1330 ast_for_atom(struct compiling *c, const node *n) |
| 1331 { | |
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1332 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1333 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
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1334 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1335 */ |
| 1336 node *ch = CHILD(n, 0); | |
| 40894 | 1337 int bytesmode = 0; |
| 35742 | 1338 |
| 1339 switch (TYPE(ch)) { | |
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1340 case NAME: { |
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1341 /* All names start in Load context, but may later be |
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1342 changed. */ |
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1343 PyObject *name = NEW_IDENTIFIER(ch); |
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1344 if (!name) |
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1345 return NULL; |
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1346 return Name(name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1347 } |
| 35742 | 1348 case STRING: { |
| 40894 | 1349 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1350 if (!str) { |
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1351 if (PyErr_ExceptionMatches(PyExc_UnicodeError)) { |
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1352 PyObject *type, *value, *tback, *errstr; |
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1353 PyErr_Fetch(&type, &value, &tback); |
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1354 errstr = PyObject_Str(value); |
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1355 if (errstr) { |
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1356 char *s = ""; |
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1357 char buf[128]; |
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1358 s = _PyUnicode_AsString(errstr); |
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1359 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
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1360 ast_error(n, buf); |
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1361 Py_DECREF(errstr); |
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1362 } else { |
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1363 ast_error(n, "(unicode error) unknown error"); |
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1364 } |
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1365 Py_DECREF(type); |
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1366 Py_DECREF(value); |
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1367 Py_XDECREF(tback); |
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1368 } |
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1369 return NULL; |
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1370 } |
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1371 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1372 if (bytesmode) |
| 1373 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1374 else | |
| 1375 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1376 } |
| 1377 case NUMBER: { | |
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1378 PyObject *pynum = parsenumber(c, STR(ch)); |
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1379 if (!pynum) |
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1380 return NULL; |
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parents:
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diff
changeset
|
1381 |
|
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|
1382 PyArena_AddPyObject(c->c_arena, pynum); |
|
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1383 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1384 } |
|
41230
b1a18c7ed5ca
Make ELLIPSIS a separate token. This makes it a syntax error to write ". . ." for Ellipsis.
Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
1385 case ELLIPSIS: /* Ellipsis */ |
|
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|
1386 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1387 case LPAR: /* some parenthesized expressions */ |
|
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|
1388 ch = CHILD(n, 1); |
|
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1389 |
|
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|
1390 if (TYPE(ch) == RPAR) |
|
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1391 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1392 |
|
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|
1393 if (TYPE(ch) == yield_expr) |
|
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|
1394 return ast_for_expr(c, ch); |
|
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|
1395 |
|
060c79f6d919
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|
1396 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
|
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|
1397 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
|
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1398 return ast_for_genexp(c, ch); |
|
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>
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|
1399 |
|
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|
1400 return ast_for_testlist(c, ch); |
| 35742 | 1401 case LSQB: /* list (or list comprehension) */ |
|
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1402 ch = CHILD(n, 1); |
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1403 |
|
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|
1404 if (TYPE(ch) == RSQB) |
|
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|
1405 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1406 |
|
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|
1407 REQ(ch, testlist_comp); |
|
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1408 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
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|
1409 asdl_seq *elts = seq_for_testlist(c, ch); |
|
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|
1410 if (!elts) |
|
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|
1411 return NULL; |
|
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parents:
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diff
changeset
|
1412 |
|
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|
1413 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1414 } |
|
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|
1415 else |
|
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|
1416 return ast_for_listcomp(c, ch); |
| 35742 | 1417 case LBRACE: { |
|
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|
1418 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
|
060c79f6d919
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changeset
|
1419 * test (gen_for | (',' test)* [',']) */ |
|
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|
1420 int i, size; |
|
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|
1421 asdl_seq *keys, *values; |
|
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|
1422 |
|
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|
1423 ch = CHILD(n, 1); |
|
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|
1424 if (TYPE(ch) == RBRACE) { |
|
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|
1425 /* it's an empty dict */ |
|
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|
1426 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
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diff
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|
1427 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
060c79f6d919
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diff
changeset
|
1428 /* it's a simple set */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
parents:
41464
diff
changeset
|
1429 asdl_seq *elts; |
|
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parents:
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|
1430 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
|
41482
a5e410639e24
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parents:
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diff
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|
1431 elts = asdl_seq_new(size, c->c_arena); |
|
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|
1432 if (!elts) |
|
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parents:
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|
1433 return NULL; |
|
d0b83c4630c0
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parents:
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diff
changeset
|
1434 for (i = 0; i < NCH(ch); i += 2) { |
|
d0b83c4630c0
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parents:
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changeset
|
1435 expr_ty expression; |
|
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diff
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|
1436 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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|
1437 if (!expression) |
|
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|
1438 return NULL; |
|
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|
1439 asdl_seq_SET(elts, i / 2, expression); |
|
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parents:
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|
1440 } |
|
41464
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diff
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|
1441 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1442 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
|
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changeset
|
1443 /* it's a set comprehension */ |
|
060c79f6d919
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changeset
|
1444 return ast_for_setcomp(c, ch); |
|
42193
090588a17490
Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
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42084
diff
changeset
|
1445 } else if (NCH(ch) > 3 && TYPE(CHILD(ch, 3)) == comp_for) { |
|
090588a17490
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parents:
42084
diff
changeset
|
1446 return ast_for_dictcomp(c, ch); |
|
39693
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parents:
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diff
changeset
|
1447 } else { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
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parents:
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diff
changeset
|
1448 /* it's a dict */ |
|
d0b83c4630c0
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parents:
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changeset
|
1449 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
|
d0b83c4630c0
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parents:
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diff
changeset
|
1450 keys = asdl_seq_new(size, c->c_arena); |
|
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|
1451 if (!keys) |
|
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diff
changeset
|
1452 return NULL; |
|
d0b83c4630c0
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diff
changeset
|
1453 |
|
d0b83c4630c0
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parents:
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diff
changeset
|
1454 values = asdl_seq_new(size, c->c_arena); |
|
d0b83c4630c0
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changeset
|
1455 if (!values) |
|
d0b83c4630c0
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diff
changeset
|
1456 return NULL; |
|
d0b83c4630c0
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diff
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|
1457 |
|
d0b83c4630c0
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|
1458 for (i = 0; i < NCH(ch); i += 4) { |
|
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changeset
|
1459 expr_ty expression; |
|
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|
1460 |
|
d0b83c4630c0
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changeset
|
1461 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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changeset
|
1462 if (!expression) |
|
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diff
changeset
|
1463 return NULL; |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1464 |
|
39693
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changeset
|
1465 asdl_seq_SET(keys, i / 4, expression); |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
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parents:
35870
diff
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|
1466 |
|
39693
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diff
changeset
|
1467 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
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changeset
|
1468 if (!expression) |
|
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changeset
|
1469 return NULL; |
|
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|
1470 |
|
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|
1471 asdl_seq_SET(values, i / 4, expression); |
|
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diff
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|
1472 } |
|
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diff
changeset
|
1473 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
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changeset
|
1474 } |
| 35742 | 1475 } |
| 1476 default: | |
|
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|
1477 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
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changeset
|
1478 return NULL; |
| 35742 | 1479 } |
| 1480 } | |
| 1481 | |
| 1482 static slice_ty | |
| 1483 ast_for_slice(struct compiling *c, const node *n) | |
| 1484 { | |
| 1485 node *ch; | |
| 1486 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1487 | |
| 1488 REQ(n, subscript); | |
| 1489 | |
| 1490 /* | |
|
39783
7a0ad110e91e
Patch #1550786: ellipsis literal.
Georg Brandl <georg@python.org>
parents:
39782
diff
changeset
|
1491 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1492 sliceop: ':' [test] |
| 1493 */ | |
| 1494 ch = CHILD(n, 0); | |
| 1495 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1496 /* 'step' variable hold no significance in terms of being used over | |
| 1497 other vars */ | |
| 1498 step = ast_for_expr(c, ch); | |
| 1499 if (!step) | |
| 1500 return NULL; | |
| 1501 | |
|
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|
1502 return Index(step, c->c_arena); |
| 35742 | 1503 } |
| 1504 | |
| 1505 if (TYPE(ch) == test) { | |
|
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|
1506 lower = ast_for_expr(c, ch); |
| 35742 | 1507 if (!lower) |
| 1508 return NULL; | |
| 1509 } | |
| 1510 | |
| 1511 /* If there's an upper bound it's in the second or third position. */ | |
| 1512 if (TYPE(ch) == COLON) { | |
|
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40215
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changeset
|
1513 if (NCH(n) > 1) { |
|
cc992d75d5b3
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changeset
|
1514 node *n2 = CHILD(n, 1); |
| 35742 | 1515 |
|
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changeset
|
1516 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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40215
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changeset
|
1517 upper = ast_for_expr(c, n2); |
| 35742 | 1518 if (!upper) |
| 1519 return NULL; | |
| 1520 } | |
|
40450
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parents:
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diff
changeset
|
1521 } |
| 35742 | 1522 } else if (NCH(n) > 2) { |
|
40450
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Four months of trunk changes (including a few releases...)
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40215
diff
changeset
|
1523 node *n2 = CHILD(n, 2); |
| 35742 | 1524 |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1525 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1526 upper = ast_for_expr(c, n2); |
| 35742 | 1527 if (!upper) |
| 1528 return NULL; | |
| 1529 } | |
| 1530 } | |
| 1531 | |
| 1532 ch = CHILD(n, NCH(n) - 1); | |
| 1533 if (TYPE(ch) == sliceop) { | |
|
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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|
1534 if (NCH(ch) != 1) { |
|
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f731859e9b3b
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|
1535 ch = CHILD(ch, 1); |
|
f731859e9b3b
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|
1536 if (TYPE(ch) == test) { |
|
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Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
1537 step = ast_for_expr(c, ch); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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|
1538 if (!step) |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
1539 return NULL; |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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changeset
|
1540 } |
| 35742 | 1541 } |
| 1542 } | |
| 1543 | |
|
36065
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diff
changeset
|
1544 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1545 } |
| 1546 | |
| 1547 static expr_ty | |
| 1548 ast_for_binop(struct compiling *c, const node *n) | |
| 1549 { | |
|
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|
1550 /* Must account for a sequence of expressions. |
|
06145fbc7ab9
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|
1551 How should A op B op C by represented? |
|
06145fbc7ab9
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|
1552 BinOp(BinOp(A, op, B), op, C). |
|
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|
1553 */ |
| 35742 | 1554 |
|
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|
1555 int i, nops; |
|
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|
1556 expr_ty expr1, expr2, result; |
|
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|
1557 operator_ty newoperator; |
|
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|
1558 |
|
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|
1559 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
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|
1560 if (!expr1) |
|
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|
1561 return NULL; |
| 35742 | 1562 |
|
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|
1563 expr2 = ast_for_expr(c, CHILD(n, 2)); |
|
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|
1564 if (!expr2) |
|
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|
1565 return NULL; |
|
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|
1566 |
|
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|
1567 newoperator = get_operator(CHILD(n, 1)); |
|
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|
1568 if (!newoperator) |
|
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|
1569 return NULL; |
| 35742 | 1570 |
|
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|
1571 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
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|
1572 c->c_arena); |
|
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|
1573 if (!result) |
|
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|
1574 return NULL; |
| 35742 | 1575 |
|
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|
1576 nops = (NCH(n) - 1) / 2; |
|
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|
1577 for (i = 1; i < nops; i++) { |
|
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|
1578 expr_ty tmp_result, tmp; |
|
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|
1579 const node* next_oper = CHILD(n, i * 2 + 1); |
|
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|
1580 |
|
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|
1581 newoperator = get_operator(next_oper); |
|
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|
1582 if (!newoperator) |
| 35742 | 1583 return NULL; |
| 1584 | |
|
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|
1585 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
|
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|
1586 if (!tmp) |
| 35742 | 1587 return NULL; |
| 1588 | |
|
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1589 tmp_result = BinOp(result, newoperator, tmp, |
|
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|
1590 LINENO(next_oper), next_oper->n_col_offset, |
|
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1591 c->c_arena); |
|
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1592 if (!tmp_result) |
|
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1593 return NULL; |
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|
1594 result = tmp_result; |
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1595 } |
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|
1596 return result; |
| 35742 | 1597 } |
| 1598 | |
|
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|
1599 static expr_ty |
|
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|
1600 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
|
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1601 { |
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|
1602 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
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|
1603 subscriptlist: subscript (',' subscript)* [','] |
|
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|
1604 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
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1605 */ |
|
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|
1606 REQ(n, trailer); |
|
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|
1607 if (TYPE(CHILD(n, 0)) == LPAR) { |
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|
1608 if (NCH(n) == 2) |
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|
1609 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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1610 n->n_col_offset, c->c_arena); |
|
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1611 else |
|
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1612 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
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1613 } |
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1614 else if (TYPE(CHILD(n, 0)) == DOT ) { |
|
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1615 PyObject *attr_id = NEW_IDENTIFIER(CHILD(n, 1)); |
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1616 if (!attr_id) |
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1617 return NULL; |
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1618 return Attribute(left_expr, attr_id, Load, |
|
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|
1619 LINENO(n), n->n_col_offset, c->c_arena); |
|
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1620 } |
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1621 else { |
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1622 REQ(CHILD(n, 0), LSQB); |
|
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1623 REQ(CHILD(n, 2), RSQB); |
|
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|
1624 n = CHILD(n, 1); |
|
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|
1625 if (NCH(n) == 1) { |
|
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|
1626 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
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|
1627 if (!slc) |
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|
1628 return NULL; |
|
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|
1629 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
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|
1630 c->c_arena); |
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|
1631 } |
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|
1632 else { |
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|
1633 /* The grammar is ambiguous here. The ambiguity is resolved |
|
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|
1634 by treating the sequence as a tuple literal if there are |
|
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|
1635 no slice features. |
|
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|
1636 */ |
|
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|
1637 int j; |
|
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|
1638 slice_ty slc; |
|
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changeset
|
1639 expr_ty e; |
|
40941
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|
1640 int simple = 1; |
|
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|
1641 asdl_seq *slices, *elts; |
|
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|
1642 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
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|
1643 if (!slices) |
|
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|
1644 return NULL; |
|
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|
1645 for (j = 0; j < NCH(n); j += 2) { |
|
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|
1646 slc = ast_for_slice(c, CHILD(n, j)); |
|
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diff
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|
1647 if (!slc) |
|
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Refactor code for translating "power" nodes.
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diff
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|
1648 return NULL; |
|
36686
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1649 if (slc->kind != Index_kind) |
|
40941
2ca14d6a369b
Whoops, fix build breakage. There were still a few uses of the bool type.
Neal Norwitz <nnorwitz@gmail.com>
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diff
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|
1650 simple = 0; |
|
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Refactor code for translating "power" nodes.
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diff
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|
1651 asdl_seq_SET(slices, j / 2, slc); |
|
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parents:
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diff
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|
1652 } |
|
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Fix parsing of subscriptlist.
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parents:
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diff
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|
1653 if (!simple) { |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
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|
1654 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
|
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57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
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|
1655 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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Fix parsing of subscriptlist.
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parents:
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diff
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|
1656 } |
|
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Fix parsing of subscriptlist.
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parents:
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diff
changeset
|
1657 /* extract Index values and put them in a Tuple */ |
|
8611f39cd82b
Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36682
diff
changeset
|
1658 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
|
1659 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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|
1660 return NULL; |
|
36686
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Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
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diff
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|
1661 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
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Fix parsing of subscriptlist.
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parents:
36682
diff
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|
1662 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
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Fix parsing of subscriptlist.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
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diff
changeset
|
1663 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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parents:
36682
diff
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|
1664 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
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Fix parsing of subscriptlist.
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diff
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|
1665 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
1666 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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36682
diff
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|
1667 if (!e) |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
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diff
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|
1668 return NULL; |
|
8611f39cd82b
Fix parsing of subscriptlist.
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parents:
36682
diff
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|
1669 return Subscript(left_expr, Index(e, c->c_arena), |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
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|
1670 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
35799
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
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|
1671 } |
|
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
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|
1672 } |
|
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Refactor code for translating "power" nodes.
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|
1673 } |
|
842caa245917
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parents:
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diff
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|
1674 |
|
842caa245917
Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
1675 static expr_ty |
|
39442
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|
1676 ast_for_factor(struct compiling *c, const node *n) |
|
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|
1677 { |
|
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|
1678 node *pfactor, *ppower, *patom, *pnum; |
|
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|
1679 expr_ty expression; |
|
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|
1680 |
|
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|
1681 /* If the unary - operator is applied to a constant, don't generate |
|
654c380cf8b9
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|
1682 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
|
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|
1683 constant. The peephole optimizer already does something like |
|
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|
1684 this but it doesn't handle the case where the constant is |
|
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|
1685 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
|
654c380cf8b9
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|
1686 PyLongObject. |
|
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|
1687 */ |
|
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|
1688 if (TYPE(CHILD(n, 0)) == MINUS |
|
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|
1689 && NCH(n) == 2 |
|
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|
1690 && TYPE((pfactor = CHILD(n, 1))) == factor |
|
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|
1691 && NCH(pfactor) == 1 |
|
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|
1692 && TYPE((ppower = CHILD(pfactor, 0))) == power |
|
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|
1693 && NCH(ppower) == 1 |
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|
1694 && TYPE((patom = CHILD(ppower, 0))) == atom |
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1695 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
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|
1696 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
|
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|
1697 if (s == NULL) |
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|
1698 return NULL; |
|
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|
1699 s[0] = '-'; |
|
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|
1700 strcpy(s + 1, STR(pnum)); |
|
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|
1701 PyObject_FREE(STR(pnum)); |
|
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|
1702 STR(pnum) = s; |
|
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|
1703 return ast_for_atom(c, patom); |
|
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1704 } |
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|
1705 |
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|
1706 expression = ast_for_expr(c, CHILD(n, 1)); |
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|
1707 if (!expression) |
|
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|
1708 return NULL; |
|
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|
1709 |
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|
1710 switch (TYPE(CHILD(n, 0))) { |
|
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|
1711 case PLUS: |
|
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|
1712 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
|
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|
1713 c->c_arena); |
|
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|
1714 case MINUS: |
|
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|
1715 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
|
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|
1716 c->c_arena); |
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|
1717 case TILDE: |
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|
1718 return UnaryOp(Invert, expression, LINENO(n), |
|
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|
1719 n->n_col_offset, c->c_arena); |
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1720 } |
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|
1721 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
|
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|
1722 TYPE(CHILD(n, 0))); |
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|
1723 return NULL; |
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|
1724 } |
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|
1725 |
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|
1726 static expr_ty |
|
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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diff
changeset
|
1727 ast_for_power(struct compiling *c, const node *n) |
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Refactor code for translating "power" nodes.
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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1728 { |
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|
1729 /* power: atom trailer* ('**' factor)* |
|
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|
1730 */ |
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|
1731 int i; |
|
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|
1732 expr_ty e, tmp; |
|
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|
1733 REQ(n, power); |
|
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Refactor code for translating "power" nodes.
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|
1734 e = ast_for_atom(c, CHILD(n, 0)); |
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|
1735 if (!e) |
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|
1736 return NULL; |
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|
1737 if (NCH(n) == 1) |
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|
1738 return e; |
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|
1739 for (i = 1; i < NCH(n); i++) { |
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|
1740 node *ch = CHILD(n, i); |
|
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|
1741 if (TYPE(ch) != trailer) |
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|
1742 break; |
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|
1743 tmp = ast_for_trailer(c, ch, e); |
|
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|
1744 if (!tmp) |
|
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|
1745 return NULL; |
|
40450
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|
1746 tmp->lineno = e->lineno; |
|
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1747 tmp->col_offset = e->col_offset; |
|
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|
1748 e = tmp; |
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|
1749 } |
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1750 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
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|
1751 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
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|
1752 if (!f) |
|
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|
1753 return NULL; |
|
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1754 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1755 if (!tmp) |
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1756 return NULL; |
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|
1757 e = tmp; |
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1758 } |
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1759 return e; |
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|
1760 } |
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1761 |
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1762 static expr_ty |
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1763 ast_for_starred(struct compiling *c, const node *n) |
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1764 { |
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1765 expr_ty tmp; |
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1766 REQ(n, star_expr); |
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1767 |
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1768 tmp = ast_for_expr(c, CHILD(n, 1)); |
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1769 if (!tmp) |
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1770 return NULL; |
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1771 |
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1772 /* The Load context is changed later. */ |
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1773 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1774 } |
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1775 |
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1776 |
| 35742 | 1777 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1778 */ | |
| 1779 | |
| 1780 static expr_ty | |
| 1781 ast_for_expr(struct compiling *c, const node *n) | |
| 1782 { | |
| 1783 /* handle the full range of simple expressions | |
|
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1784 test: or_test ['if' or_test 'else' test] | lambdef |
|
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1785 test_nocond: or_test | lambdef_nocond |
|
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1786 or_test: and_test ('or' and_test)* |
| 35742 | 1787 and_test: not_test ('and' not_test)* |
| 1788 not_test: 'not' not_test | comparison | |
| 1789 comparison: expr (comp_op expr)* | |
| 1790 expr: xor_expr ('|' xor_expr)* | |
| 1791 xor_expr: and_expr ('^' and_expr)* | |
| 1792 and_expr: shift_expr ('&' shift_expr)* | |
| 1793 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1794 arith_expr: term (('+'|'-') term)* | |
| 1795 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1796 factor: ('+'|'-'|'~') factor | power | |
| 1797 power: atom trailer* ('**' factor)* | |
| 1798 */ | |
| 1799 | |
| 1800 asdl_seq *seq; | |
| 1801 int i; | |
| 1802 | |
| 1803 loop: | |
| 1804 switch (TYPE(n)) { | |
| 1805 case test: | |
|
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1806 case test_nocond: |
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1807 if (TYPE(CHILD(n, 0)) == lambdef || |
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1808 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1809 return ast_for_lambdef(c, CHILD(n, 0)); |
|
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1810 else if (NCH(n) > 1) |
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1811 return ast_for_ifexpr(c, n); |
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1812 /* Fallthrough */ |
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1813 case or_test: |
| 35742 | 1814 case and_test: |
| 1815 if (NCH(n) == 1) { | |
| 1816 n = CHILD(n, 0); | |
| 1817 goto loop; | |
| 1818 } | |
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1819 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1820 if (!seq) |
| 1821 return NULL; | |
| 1822 for (i = 0; i < NCH(n); i += 2) { | |
| 1823 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1824 if (!e) | |
| 1825 return NULL; | |
| 1826 asdl_seq_SET(seq, i / 2, e); | |
| 1827 } | |
| 1828 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
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1829 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
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1830 c->c_arena); |
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1831 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
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1832 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1833 case not_test: |
| 1834 if (NCH(n) == 1) { | |
| 1835 n = CHILD(n, 0); | |
| 1836 goto loop; | |
| 1837 } | |
| 1838 else { | |
| 1839 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1840 if (!expression) | |
| 1841 return NULL; | |
| 1842 | |
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1843 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
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1844 c->c_arena); |
| 35742 | 1845 } |
| 1846 case comparison: | |
| 1847 if (NCH(n) == 1) { | |
| 1848 n = CHILD(n, 0); | |
| 1849 goto loop; | |
| 1850 } | |
| 1851 else { | |
| 1852 expr_ty expression; | |
|
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1853 asdl_int_seq *ops; |
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1854 asdl_seq *cmps; |
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1855 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1856 if (!ops) |
| 1857 return NULL; | |
|
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1858 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1859 if (!cmps) { |
| 1860 return NULL; | |
| 1861 } | |
| 1862 for (i = 1; i < NCH(n); i += 2) { | |
|
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1863 cmpop_ty newoperator; |
| 35742 | 1864 |
|
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1865 newoperator = ast_for_comp_op(c, CHILD(n, i)); |
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1866 if (!newoperator) { |
| 35742 | 1867 return NULL; |
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1868 } |
| 35742 | 1869 |
| 1870 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
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1871 if (!expression) { |
| 35742 | 1872 return NULL; |
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1873 } |
| 35742 | 1874 |
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1875 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1876 asdl_seq_SET(cmps, i / 2, expression); |
| 1877 } | |
| 1878 expression = ast_for_expr(c, CHILD(n, 0)); | |
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1879 if (!expression) { |
| 35742 | 1880 return NULL; |
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1881 } |
| 35742 | 1882 |
|
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1883 return Compare(expression, ops, cmps, LINENO(n), |
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1884 n->n_col_offset, c->c_arena); |
| 35742 | 1885 } |
| 1886 break; | |
| 1887 | |
|
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1888 case star_expr: |
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1889 if (TYPE(CHILD(n, 0)) == STAR) { |
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1890 return ast_for_starred(c, n); |
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1891 } |
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1892 /* Fallthrough */ |
| 35742 | 1893 /* The next five cases all handle BinOps. The main body of code |
| 1894 is the same in each case, but the switch turned inside out to | |
| 1895 reuse the code for each type of operator. | |
| 1896 */ | |
| 1897 case expr: | |
| 1898 case xor_expr: | |
| 1899 case and_expr: | |
| 1900 case shift_expr: | |
| 1901 case arith_expr: | |
| 1902 case term: | |
| 1903 if (NCH(n) == 1) { | |
| 1904 n = CHILD(n, 0); | |
| 1905 goto loop; | |
| 1906 } | |
| 1907 return ast_for_binop(c, n); | |
| 1908 case yield_expr: { | |
|
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1909 expr_ty exp = NULL; |
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1910 if (NCH(n) == 2) { |
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1911 exp = ast_for_testlist(c, CHILD(n, 1)); |
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1912 if (!exp) |
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1913 return NULL; |
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1914 } |
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1915 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
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1916 } |
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1917 case factor: |
| 35742 | 1918 if (NCH(n) == 1) { |
| 1919 n = CHILD(n, 0); | |
| 1920 goto loop; | |
| 1921 } | |
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1922 return ast_for_factor(c, n); |
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1923 case power: |
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1924 return ast_for_power(c, n); |
| 35742 | 1925 default: |
|
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1926 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1927 return NULL; |
| 1928 } | |
|
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1929 /* should never get here unless if error is set */ |
| 35742 | 1930 return NULL; |
| 1931 } | |
| 1932 | |
| 1933 static expr_ty | |
| 1934 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1935 { | |
| 1936 /* | |
| 1937 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1938 | '**' test) | |
|
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1939 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1940 */ |
| 1941 | |
| 1942 int i, nargs, nkeywords, ngens; | |
|
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1943 asdl_seq *args; |
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1944 asdl_seq *keywords; |
| 35742 | 1945 expr_ty vararg = NULL, kwarg = NULL; |
| 1946 | |
| 1947 REQ(n, arglist); | |
| 1948 | |
| 1949 nargs = 0; | |
| 1950 nkeywords = 0; | |
| 1951 ngens = 0; | |
| 1952 for (i = 0; i < NCH(n); i++) { | |
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1953 node *ch = CHILD(n, i); |
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1954 if (TYPE(ch) == argument) { |
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1955 if (NCH(ch) == 1) |
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1956 nargs++; |
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1957 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1958 ngens++; |
| 35742 | 1959 else |
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1960 nkeywords++; |
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1961 } |
| 35742 | 1962 } |
| 1963 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
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1964 ast_error(n, "Generator expression must be parenthesized " |
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1965 "if not sole argument"); |
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1966 return NULL; |
| 35742 | 1967 } |
| 1968 | |
| 1969 if (nargs + nkeywords + ngens > 255) { | |
| 1970 ast_error(n, "more than 255 arguments"); | |
| 1971 return NULL; | |
| 1972 } | |
| 1973 | |
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1974 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1975 if (!args) |
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1976 return NULL; |
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1977 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1978 if (!keywords) |
|
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1979 return NULL; |
| 35742 | 1980 nargs = 0; |
| 1981 nkeywords = 0; | |
| 1982 for (i = 0; i < NCH(n); i++) { | |
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1983 node *ch = CHILD(n, i); |
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1984 if (TYPE(ch) == argument) { |
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1985 expr_ty e; |
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1986 if (NCH(ch) == 1) { |
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1987 if (nkeywords) { |
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1988 ast_error(CHILD(ch, 0), |
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1989 "non-keyword arg after keyword arg"); |
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1990 return NULL; |
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1991 } |
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1992 if (vararg) { |
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1993 ast_error(CHILD(ch, 0), |
|
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1994 "only named arguments may follow *expression"); |
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1995 return NULL; |
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1996 } |
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1997 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1998 if (!e) |
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1999 return NULL; |
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2000 asdl_seq_SET(args, nargs++, e); |
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2001 } |
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2002 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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2003 e = ast_for_genexp(c, ch); |
| 35742 | 2004 if (!e) |
|
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2005 return NULL; |
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2006 asdl_seq_SET(args, nargs++, e); |
| 35742 | 2007 } |
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2008 else { |
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2009 keyword_ty kw; |
|
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|
2010 identifier key, tmp; |
|
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2011 int k; |
| 35742 | 2012 |
|
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2013 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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2014 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 2015 if (!e) |
|
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2016 return NULL; |
| 35742 | 2017 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 2018 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 2019 * SF bug 132313 points out that complaining about a keyword | |
| 2020 * then is very confusing. | |
| 2021 */ | |
| 2022 if (e->kind == Lambda_kind) { | |
| 2023 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
|
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2024 return NULL; |
| 35742 | 2025 } else if (e->kind != Name_kind) { |
| 2026 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
|
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2027 return NULL; |
|
54954
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2028 } else if (forbidden_name(e->v.Name.id, ch, 1)) { |
|
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2029 return NULL; |
|
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2030 } |
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2031 key = e->v.Name.id; |
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2032 for (k = 0; k < nkeywords; k++) { |
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2033 tmp = ((keyword_ty)asdl_seq_GET(keywords, k))->arg; |
|
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2034 if (!PyUnicode_Compare(tmp, key)) { |
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2035 ast_error(CHILD(ch, 0), "keyword argument repeated"); |
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2036 return NULL; |
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2037 } |
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2038 } |
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2039 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 2040 if (!e) |
|
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2041 return NULL; |
|
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2042 kw = keyword(key, e, c->c_arena); |
| 35742 | 2043 if (!kw) |
|
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2044 return NULL; |
|
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2045 asdl_seq_SET(keywords, nkeywords++, kw); |
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2046 } |
|
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2047 } |
|
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2048 else if (TYPE(ch) == STAR) { |
|
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2049 vararg = ast_for_expr(c, CHILD(n, i+1)); |
|
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2050 if (!vararg) |
|
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2051 return NULL; |
|
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2052 i++; |
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2053 } |
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2054 else if (TYPE(ch) == DOUBLESTAR) { |
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2055 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
|
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2056 if (!kwarg) |
|
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2057 return NULL; |
|
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2058 i++; |
|
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2059 } |
| 35742 | 2060 } |
| 2061 | |
|
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Patch #1440601: Add col_offset attribute to AST nodes.
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|
2062 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 2063 } |
| 2064 | |
| 2065 static expr_ty | |
|
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|
2066 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 2067 { |
|
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2068 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
|
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|
2069 /* testlist: test (',' test)* [','] */ |
|
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2070 /* testlist1: test (',' test)* */ |
| 35742 | 2071 assert(NCH(n) > 0); |
|
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|
2072 if (TYPE(n) == testlist_comp) { |
|
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|
2073 if (NCH(n) > 1) |
|
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|
2074 assert(TYPE(CHILD(n, 1)) != comp_for); |
|
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|
2075 } |
|
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|
2076 else { |
|
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|
2077 assert(TYPE(n) == testlist || |
|
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|
2078 TYPE(n) == testlist1); |
|
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2079 } |
| 35742 | 2080 if (NCH(n) == 1) |
|
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2081 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 2082 else { |
| 2083 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 2084 if (!tmp) | |
| 2085 return NULL; | |
|
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|
2086 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2087 } |
|
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|
2088 } |
|
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|
2089 |
| 35742 | 2090 static stmt_ty |
| 2091 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2092 { | |
| 2093 REQ(n, expr_stmt); | |
| 2094 /* expr_stmt: testlist (augassign (yield_expr|testlist) | |
| 2095 | ('=' (yield_expr|testlist))*) | |
| 2096 testlist: test (',' test)* [','] | |
| 2097 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | |
|
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2098 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2099 test: ... here starts the operator precendence dance |
| 2100 */ | |
| 2101 | |
| 2102 if (NCH(n) == 1) { | |
|
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2103 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2104 if (!e) |
| 2105 return NULL; | |
| 2106 | |
|
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2107 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2108 } |
| 2109 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2110 expr_ty expr1, expr2; | |
|
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2111 operator_ty newoperator; |
|
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2112 node *ch = CHILD(n, 0); |
| 35742 | 2113 |
|
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2114 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2115 if (!expr1) |
| 2116 return NULL; | |
|
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2117 if(!set_context(c, expr1, Store, ch)) |
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2118 return NULL; |
| 35742 | 2119 |
|
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2120 ch = CHILD(n, 2); |
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2121 if (TYPE(ch) == testlist) |
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2122 expr2 = ast_for_testlist(c, ch); |
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2123 else |
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2124 expr2 = ast_for_expr(c, ch); |
|
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2125 if (!expr2) |
| 35742 | 2126 return NULL; |
| 2127 | |
|
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2128 newoperator = ast_for_augassign(c, CHILD(n, 1)); |
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2129 if (!newoperator) |
| 35742 | 2130 return NULL; |
| 2131 | |
|
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2132 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2133 } |
| 2134 else { | |
|
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2135 int i; |
|
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2136 asdl_seq *targets; |
|
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2137 node *value; |
| 35742 | 2138 expr_ty expression; |
| 2139 | |
|
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2140 /* a normal assignment */ |
|
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|
2141 REQ(CHILD(n, 1), EQUAL); |
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2142 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
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2143 if (!targets) |
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2144 return NULL; |
|
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2145 for (i = 0; i < NCH(n) - 2; i += 2) { |
|
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2146 expr_ty e; |
|
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2147 node *ch = CHILD(n, i); |
|
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2148 if (TYPE(ch) == yield_expr) { |
|
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|
2149 ast_error(ch, "assignment to yield expression not possible"); |
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2150 return NULL; |
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2151 } |
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2152 e = ast_for_testlist(c, ch); |
| 35742 | 2153 |
|
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2154 /* set context to assign */ |
|
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2155 if (!e) |
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2156 return NULL; |
| 35742 | 2157 |
|
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2158 if (!set_context(c, e, Store, CHILD(n, i))) |
|
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2159 return NULL; |
| 35742 | 2160 |
|
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2161 asdl_seq_SET(targets, i / 2, e); |
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2162 } |
|
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|
2163 value = CHILD(n, NCH(n) - 1); |
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2164 if (TYPE(value) == testlist) |
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2165 expression = ast_for_testlist(c, value); |
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2166 else |
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|
2167 expression = ast_for_expr(c, value); |
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|
2168 if (!expression) |
|
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2169 return NULL; |
|
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|
2170 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2171 } |
| 2172 } | |
| 2173 | |
|
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|
2174 |
| 35742 | 2175 static asdl_seq * |
|
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|
2176 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2177 { |
| 2178 asdl_seq *seq; | |
| 2179 int i; | |
| 2180 expr_ty e; | |
| 2181 | |
| 2182 REQ(n, exprlist); | |
| 2183 | |
|
36065
ea083efdc96c
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diff
changeset
|
2184 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2185 if (!seq) |
|
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|
2186 return NULL; |
| 35742 | 2187 for (i = 0; i < NCH(n); i += 2) { |
|
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|
2188 e = ast_for_expr(c, CHILD(n, i)); |
|
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|
2189 if (!e) |
|
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|
2190 return NULL; |
|
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|
2191 asdl_seq_SET(seq, i / 2, e); |
|
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2192 if (context && !set_context(c, e, context, CHILD(n, i))) |
|
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|
2193 return NULL; |
| 35742 | 2194 } |
| 2195 return seq; | |
| 2196 } | |
| 2197 | |
| 2198 static stmt_ty | |
| 2199 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2200 { | |
| 2201 asdl_seq *expr_list; | |
| 2202 | |
| 2203 /* del_stmt: 'del' exprlist */ | |
| 2204 REQ(n, del_stmt); | |
| 2205 | |
| 2206 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2207 if (!expr_list) | |
| 2208 return NULL; | |
|
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|
2209 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2210 } |
| 2211 | |
| 2212 static stmt_ty | |
| 2213 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2214 { | |
| 2215 /* | |
| 2216 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2217 | yield_stmt | |
| 2218 break_stmt: 'break' | |
| 2219 continue_stmt: 'continue' | |
| 2220 return_stmt: 'return' [testlist] | |
| 2221 yield_stmt: yield_expr | |
| 2222 yield_expr: 'yield' testlist | |
| 2223 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2224 */ | |
| 2225 node *ch; | |
| 2226 | |
| 2227 REQ(n, flow_stmt); | |
| 2228 ch = CHILD(n, 0); | |
| 2229 switch (TYPE(ch)) { | |
| 2230 case break_stmt: | |
|
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|
2231 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2232 case continue_stmt: |
|
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|
2233 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2234 case yield_stmt: { /* will reduce to yield_expr */ |
|
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2235 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); |
|
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|
2236 if (!exp) |
|
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|
2237 return NULL; |
|
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|
2238 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2239 } |
| 2240 case return_stmt: | |
| 2241 if (NCH(ch) == 1) | |
|
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|
2242 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2243 else { |
|
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857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
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|
2244 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2245 if (!expression) |
| 2246 return NULL; | |
|
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|
2247 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2248 } |
| 2249 case raise_stmt: | |
| 2250 if (NCH(ch) == 1) | |
|
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|
2251 return Raise(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
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2252 else if (NCH(ch) >= 2) { |
|
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|
2253 expr_ty cause = NULL; |
| 35742 | 2254 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); |
| 2255 if (!expression) | |
| 2256 return NULL; | |
|
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|
2257 if (NCH(ch) == 4) { |
|
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|
2258 cause = ast_for_expr(c, CHILD(ch, 3)); |
|
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|
2259 if (!cause) |
|
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|
2260 return NULL; |
|
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2261 } |
|
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changeset
|
2262 return Raise(expression, cause, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2263 } |
| 2264 default: | |
|
35870
f531c05cd240
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parents:
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diff
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|
2265 PyErr_Format(PyExc_SystemError, |
| 35742 | 2266 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2267 return NULL; | |
| 2268 } | |
|
36072
de16a85c3b4c
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|
2269 |
|
de16a85c3b4c
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parents:
36066
diff
changeset
|
2270 PyErr_SetString(PyExc_SystemError, "unhandled flow statement"); |
|
de16a85c3b4c
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diff
changeset
|
2271 return NULL; |
| 35742 | 2272 } |
| 2273 | |
| 2274 static alias_ty | |
|
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|
2275 alias_for_import_name(struct compiling *c, const node *n, int store) |
| 35742 | 2276 { |
| 2277 /* | |
|
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Make 'as' an actual keyword when with's future statement is used. Not
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diff
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|
2278 import_as_name: NAME ['as' NAME] |
|
658f8ff2a442
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diff
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|
2279 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2280 dotted_name: NAME ('.' NAME)* |
| 2281 */ | |
|
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|
2282 identifier str, name; |
|
36065
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parents:
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|
2283 |
| 35742 | 2284 loop: |
| 2285 switch (TYPE(n)) { | |
|
54918
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|
2286 case import_as_name: { |
|
0704f15b4682
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|
2287 node *name_node = CHILD(n, 0); |
|
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|
2288 str = NULL; |
|
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|
2289 name = NEW_IDENTIFIER(name_node); |
|
0704f15b4682
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|
2290 if (!name) |
|
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|
2291 return NULL; |
|
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2292 if (NCH(n) == 3) { |
|
54918
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|
2293 node *str_node = CHILD(n, 2); |
|
0704f15b4682
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|
2294 str = NEW_IDENTIFIER(str_node); |
|
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|
2295 if (!str) |
|
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|
2296 return NULL; |
|
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|
2297 if (store && forbidden_name(str, str_node, 0)) |
|
54918
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|
2298 return NULL; |
|
39442
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|
2299 } |
|
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|
2300 else { |
|
54954
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Benjamin Peterson <benjamin@python.org>
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|
2301 if (forbidden_name(name, name_node, 0)) |
|
54918
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Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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|
2302 return NULL; |
|
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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|
2303 } |
|
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|
2304 return alias(name, str, c->c_arena); |
|
54918
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|
2305 } |
| 35742 | 2306 case dotted_as_name: |
| 2307 if (NCH(n) == 1) { | |
| 2308 n = CHILD(n, 0); | |
| 2309 goto loop; | |
| 2310 } | |
| 2311 else { | |
|
54918
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|
2312 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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changeset
|
2313 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
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changeset
|
2314 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
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|
2315 return NULL; |
| 35742 | 2316 assert(!a->asname); |
|
54918
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Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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|
2317 a->asname = NEW_IDENTIFIER(asname_node); |
|
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|
2318 if (!a->asname) |
|
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|
2319 return NULL; |
|
54954
c45e331238ae
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Benjamin Peterson <benjamin@python.org>
parents:
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|
2320 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
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2321 return NULL; |
| 35742 | 2322 return a; |
| 2323 } | |
| 2324 break; | |
| 2325 case dotted_name: | |
|
49844
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|
2326 if (NCH(n) == 1) { |
|
54918
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Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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|
2327 node *name_node = CHILD(n, 0); |
|
0704f15b4682
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|
2328 name = NEW_IDENTIFIER(name_node); |
|
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|
2329 if (!name) |
|
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|
2330 return NULL; |
|
54954
c45e331238ae
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Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
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|
2331 if (store && forbidden_name(name, name_node, 0)) |
|
54918
0704f15b4682
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|
2332 return NULL; |
|
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|
2333 return alias(name, NULL, c->c_arena); |
|
40b7277e665f
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|
2334 } |
| 35742 | 2335 else { |
| 2336 /* 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
|
2337 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2338 size_t len; |
| 35742 | 2339 char *s; |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2340 PyObject *uni; |
| 35742 | 2341 |
| 2342 len = 0; | |
| 2343 for (i = 0; i < NCH(n); i += 2) | |
| 2344 /* length of string plus one for the dot */ | |
| 2345 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2346 len--; /* the last name doesn't have a dot */ | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2347 str = PyBytes_FromStringAndSize(NULL, len); |
| 35742 | 2348 if (!str) |
| 2349 return NULL; | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2350 s = PyBytes_AS_STRING(str); |
| 35742 | 2351 if (!s) |
| 2352 return NULL; | |
| 2353 for (i = 0; i < NCH(n); i += 2) { | |
| 2354 char *sch = STR(CHILD(n, i)); | |
| 2355 strcpy(s, STR(CHILD(n, i))); | |
| 2356 s += strlen(sch); | |
| 2357 *s++ = '.'; | |
| 2358 } | |
| 2359 --s; | |
| 2360 *s = '\0'; | |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2361 uni = PyUnicode_DecodeUTF8(PyBytes_AS_STRING(str), |
|
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2362 PyBytes_GET_SIZE(str), |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
2363 NULL); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
2364 Py_DECREF(str); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
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parents:
41969
diff
changeset
|
2365 if (!uni) |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
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parents:
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diff
changeset
|
2366 return NULL; |
|
cd125fe83051
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Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
2367 str = uni; |
|
cd125fe83051
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parents:
41969
diff
changeset
|
2368 PyUnicode_InternInPlace(&str); |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2369 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2370 return alias(str, NULL, c->c_arena); |
| 35742 | 2371 } |
| 2372 break; | |
| 2373 case STAR: | |
|
42013
cd125fe83051
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parents:
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diff
changeset
|
2374 str = PyUnicode_InternFromString("*"); |
|
40450
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|
2375 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2376 return alias(str, NULL, c->c_arena); |
| 35742 | 2377 default: |
|
35870
f531c05cd240
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parents:
35868
diff
changeset
|
2378 PyErr_Format(PyExc_SystemError, |
| 35742 | 2379 "unexpected import name: %d", TYPE(n)); |
| 2380 return NULL; | |
| 2381 } | |
|
36072
de16a85c3b4c
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|
2382 |
|
de16a85c3b4c
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parents:
36066
diff
changeset
|
2383 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2384 return NULL; |
| 2385 } | |
| 2386 | |
| 2387 static stmt_ty | |
| 2388 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2389 { | |
| 2390 /* | |
| 2391 import_stmt: import_name | import_from | |
| 2392 import_name: 'import' dotted_as_names | |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2393 import_from: 'from' (('.' | '...')* dotted_name | ('.' | '...')+) |
|
6c8c33a43a15
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Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
2394 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2395 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2396 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2397 int col_offset; |
| 35742 | 2398 int i; |
| 2399 asdl_seq *aliases; | |
| 2400 | |
| 2401 REQ(n, import_stmt); | |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2402 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2403 col_offset = n->n_col_offset; |
| 35742 | 2404 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2405 if (TYPE(n) == import_name) { |
| 35742 | 2406 n = CHILD(n, 1); |
|
40450
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2407 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2408 aliases = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2409 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2410 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2411 for (i = 0; i < NCH(n); i += 2) { |
|
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
|
2412 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2413 if (!import_alias) |
| 35742 | 2414 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2415 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2416 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2417 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2418 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2419 else if (TYPE(n) == import_from) { |
| 35742 | 2420 int n_children; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2421 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2422 alias_ty mod = NULL; |
|
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
|
2423 identifier modname = NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2424 |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2425 /* Count the number of dots (for relative imports) and check for the |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2426 optional module name */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2427 for (idx = 1; idx < NCH(n); idx++) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2428 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
|
2429 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
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2430 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
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2431 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2432 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2433 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2434 } else if (TYPE(CHILD(n, idx)) == ELLIPSIS) { |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2435 /* three consecutive dots are tokenized as one ELLIPSIS */ |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2436 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2437 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2438 } else if (TYPE(CHILD(n, idx)) != DOT) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2439 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2440 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2441 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2442 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2443 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
|
2444 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2445 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2446 /* from ... import * */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
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 = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2449 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2450 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2451 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2452 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2453 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2454 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2455 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2456 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2457 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2458 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2459 if (n_children % 2 == 0) { |
| 35742 | 2460 ast_error(n, "trailing comma not allowed without" |
| 2461 " surrounding parentheses"); | |
| 2462 return NULL; | |
| 2463 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2464 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2465 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2466 ast_error(n, "Unexpected node-type in from-import"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2467 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2468 } |
| 35742 | 2469 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2470 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
|
2471 if (!aliases) |
| 35742 | 2472 return NULL; |
| 2473 | |
| 2474 /* 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
|
2475 if (TYPE(n) == STAR) { |
|
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
|
2476 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
|
2477 if (!import_alias) |
| 35742 | 2478 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2479 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2480 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2481 else { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2482 for (i = 0; i < NCH(n); i += 2) { |
|
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
|
2483 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1); |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2484 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2485 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2486 asdl_seq_SET(aliases, i / 2, import_alias); |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2487 } |
| 35742 | 2488 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2489 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2490 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
|
2491 return ImportFrom(modname, aliases, ndots, lineno, col_offset, |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2492 c->c_arena); |
| 35742 | 2493 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2494 PyErr_Format(PyExc_SystemError, |
| 35742 | 2495 "unknown import statement: starts with command '%s'", |
| 2496 STR(CHILD(n, 0))); | |
| 2497 return NULL; | |
| 2498 } | |
| 2499 | |
| 2500 static stmt_ty | |
| 2501 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2502 { | |
| 2503 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2504 identifier name; | |
| 2505 asdl_seq *s; | |
| 2506 int i; | |
| 2507 | |
| 2508 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
|
2509 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2510 if (!s) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2511 return NULL; |
| 35742 | 2512 for (i = 1; i < NCH(n); i += 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2513 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2514 if (!name) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2515 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2516 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2517 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2518 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2519 } |
| 2520 | |
| 2521 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2522 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
|
2523 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2524 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2525 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2526 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2527 int i; |
|
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 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2530 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
|
2531 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2532 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2533 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2534 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2535 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2536 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2537 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2538 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2539 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
|
2540 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2541 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2542 static stmt_ty |
| 35742 | 2543 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2544 { | |
| 2545 /* assert_stmt: 'assert' test [',' test] */ | |
| 2546 REQ(n, assert_stmt); | |
| 2547 if (NCH(n) == 2) { | |
| 2548 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2549 if (!expression) | |
| 2550 return NULL; | |
|
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parents:
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|
2551 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2552 } |
| 2553 else if (NCH(n) == 4) { | |
| 2554 expr_ty expr1, expr2; | |
| 2555 | |
| 2556 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2557 if (!expr1) | |
| 2558 return NULL; | |
| 2559 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2560 if (!expr2) | |
| 2561 return NULL; | |
| 2562 | |
|
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|
2563 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2564 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2565 PyErr_Format(PyExc_SystemError, |
| 35742 | 2566 "improper number of parts to 'assert' statement: %d", |
| 2567 NCH(n)); | |
| 2568 return NULL; | |
| 2569 } | |
| 2570 | |
| 2571 static asdl_seq * | |
| 2572 ast_for_suite(struct compiling *c, const node *n) | |
| 2573 { | |
| 2574 /* suite: simple_stmt | NEWLINE INDENT stmt+ DEDENT */ | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2575 asdl_seq *seq; |
| 35742 | 2576 stmt_ty s; |
| 2577 int i, total, num, end, pos = 0; | |
| 2578 node *ch; | |
| 2579 | |
| 2580 REQ(n, suite); | |
| 2581 | |
| 2582 total = num_stmts(n); | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2583 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2584 if (!seq) |
|
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|
2585 return NULL; |
| 35742 | 2586 if (TYPE(CHILD(n, 0)) == simple_stmt) { |
|
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|
2587 n = CHILD(n, 0); |
|
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|
2588 /* simple_stmt always ends with a NEWLINE, |
|
cc992d75d5b3
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diff
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|
2589 and may have a trailing SEMI |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2590 */ |
|
cc992d75d5b3
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|
2591 end = NCH(n) - 1; |
|
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Four months of trunk changes (including a few releases...)
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|
2592 if (TYPE(CHILD(n, end - 1)) == SEMI) |
|
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Four months of trunk changes (including a few releases...)
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|
2593 end--; |
| 35742 | 2594 /* loop by 2 to skip semi-colons */ |
|
40450
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Four months of trunk changes (including a few releases...)
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|
2595 for (i = 0; i < end; i += 2) { |
|
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|
2596 ch = CHILD(n, i); |
|
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|
2597 s = ast_for_stmt(c, ch); |
|
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|
2598 if (!s) |
|
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|
2599 return NULL; |
|
cc992d75d5b3
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|
2600 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
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|
2601 } |
| 35742 | 2602 } |
| 2603 else { | |
|
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|
2604 for (i = 2; i < (NCH(n) - 1); i++) { |
|
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Four months of trunk changes (including a few releases...)
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|
2605 ch = CHILD(n, i); |
|
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|
2606 REQ(ch, stmt); |
|
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|
2607 num = num_stmts(ch); |
|
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Four months of trunk changes (including a few releases...)
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|
2608 if (num == 1) { |
|
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Four months of trunk changes (including a few releases...)
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diff
changeset
|
2609 /* small_stmt or compound_stmt with only one child */ |
|
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|
2610 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2611 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2612 return NULL; |
|
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Four months of trunk changes (including a few releases...)
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|
2613 asdl_seq_SET(seq, pos++, s); |
|
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Four months of trunk changes (including a few releases...)
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|
2614 } |
|
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changeset
|
2615 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2616 int j; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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changeset
|
2617 ch = CHILD(ch, 0); |
|
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Four months of trunk changes (including a few releases...)
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|
2618 REQ(ch, simple_stmt); |
|
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Four months of trunk changes (including a few releases...)
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diff
changeset
|
2619 for (j = 0; j < NCH(ch); j += 2) { |
|
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Four months of trunk changes (including a few releases...)
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diff
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|
2620 /* statement terminates with a semi-colon ';' */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
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|
2621 if (NCH(CHILD(ch, j)) == 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
|
2622 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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|
2623 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2624 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2625 s = ast_for_stmt(c, CHILD(ch, j)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2626 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
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|
2627 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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diff
changeset
|
2628 asdl_seq_SET(seq, pos++, 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
|
2629 } |
|
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2630 } |
|
cc992d75d5b3
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parents:
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diff
changeset
|
2631 } |
| 35742 | 2632 } |
| 2633 assert(pos == seq->size); | |
| 2634 return seq; | |
| 2635 } | |
| 2636 | |
| 2637 static stmt_ty | |
| 2638 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2639 { | |
| 2640 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2641 ['else' ':' suite] | |
| 2642 */ | |
| 2643 char *s; | |
| 2644 | |
| 2645 REQ(n, if_stmt); | |
| 2646 | |
| 2647 if (NCH(n) == 4) { | |
| 2648 expr_ty expression; | |
| 2649 asdl_seq *suite_seq; | |
| 2650 | |
| 2651 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2652 if (!expression) | |
| 2653 return NULL; | |
| 2654 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
|
2655 if (!suite_seq) |
| 35742 | 2656 return NULL; |
| 2657 | |
|
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parents:
41509
diff
changeset
|
2658 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
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changeset
|
2659 c->c_arena); |
| 35742 | 2660 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2661 |
| 35742 | 2662 s = STR(CHILD(n, 4)); |
| 2663 /* s[2], the third character in the string, will be | |
| 2664 's' for el_s_e, or | |
| 2665 'i' for el_i_f | |
| 2666 */ | |
| 2667 if (s[2] == 's') { | |
| 2668 expr_ty expression; | |
| 2669 asdl_seq *seq1, *seq2; | |
| 2670 | |
| 2671 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2672 if (!expression) | |
| 2673 return NULL; | |
| 2674 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2675 if (!seq1) |
| 35742 | 2676 return NULL; |
| 2677 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2678 if (!seq2) |
| 35742 | 2679 return NULL; |
| 2680 | |
|
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06145fbc7ab9
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|
2681 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
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changeset
|
2682 c->c_arena); |
| 35742 | 2683 } |
| 2684 else if (s[2] == 'i') { | |
|
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|
2685 int i, n_elif, has_else = 0; |
|
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|
2686 expr_ty expression; |
|
06145fbc7ab9
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|
2687 asdl_seq *suite_seq; |
|
40450
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|
2688 asdl_seq *orelse = NULL; |
|
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diff
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|
2689 n_elif = NCH(n) - 4; |
| 35742 | 2690 /* must reference the child n_elif+1 since 'else' token is third, |
| 2691 not fourth, child from the end. */ | |
|
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|
2692 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
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|
2693 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
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|
2694 has_else = 1; |
|
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|
2695 n_elif -= 3; |
|
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|
2696 } |
|
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changeset
|
2697 n_elif /= 4; |
| 35742 | 2698 |
|
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|
2699 if (has_else) { |
|
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|
2700 asdl_seq *suite_seq2; |
| 35742 | 2701 |
|
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|
2702 orelse = asdl_seq_new(1, c->c_arena); |
|
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|
2703 if (!orelse) |
|
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|
2704 return NULL; |
| 35742 | 2705 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
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|
2706 if (!expression) |
| 35742 | 2707 return NULL; |
|
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|
2708 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
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|
2709 if (!suite_seq) |
|
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diff
changeset
|
2710 return NULL; |
|
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|
2711 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
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|
2712 if (!suite_seq2) |
| 35742 | 2713 return NULL; |
| 2714 | |
|
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|
2715 asdl_seq_SET(orelse, 0, |
|
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|
2716 If(expression, suite_seq, suite_seq2, |
|
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|
2717 LINENO(CHILD(n, NCH(n) - 6)), |
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|
2718 CHILD(n, NCH(n) - 6)->n_col_offset, |
|
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|
2719 c->c_arena)); |
|
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|
2720 /* the just-created orelse handled the last elif */ |
|
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|
2721 n_elif--; |
|
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|
2722 } |
| 35742 | 2723 |
|
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changeset
|
2724 for (i = 0; i < n_elif; i++) { |
|
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|
2725 int off = 5 + (n_elif - i - 1) * 4; |
|
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|
2726 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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|
2727 if (!newobj) |
|
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|
2728 return NULL; |
| 35742 | 2729 expression = ast_for_expr(c, CHILD(n, off)); |
|
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|
2730 if (!expression) |
| 35742 | 2731 return NULL; |
| 2732 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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|
2733 if (!suite_seq) |
| 35742 | 2734 return NULL; |
| 2735 | |
|
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|
2736 asdl_seq_SET(newobj, 0, |
|
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|
2737 If(expression, suite_seq, orelse, |
|
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|
2738 LINENO(CHILD(n, off)), |
|
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|
2739 CHILD(n, off)->n_col_offset, c->c_arena)); |
|
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|
2740 orelse = newobj; |
|
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|
2741 } |
|
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|
2742 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
2743 if (!expression) |
|
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|
2744 return NULL; |
|
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|
2745 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
|
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|
2746 if (!suite_seq) |
|
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|
2747 return NULL; |
|
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|
2748 return If(expression, suite_seq, orelse, |
|
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|
2749 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2750 } |
|
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|
2751 |
|
de16a85c3b4c
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|
2752 PyErr_Format(PyExc_SystemError, |
|
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Cleanup a bit and make things more consistent.
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changeset
|
2753 "unexpected token in 'if' statement: %s", s); |
|
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Cleanup a bit and make things more consistent.
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|
2754 return NULL; |
| 35742 | 2755 } |
| 2756 | |
| 2757 static stmt_ty | |
| 2758 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2759 { | |
| 2760 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2761 REQ(n, while_stmt); | |
| 2762 | |
| 2763 if (NCH(n) == 4) { | |
| 2764 expr_ty expression; | |
| 2765 asdl_seq *suite_seq; | |
| 2766 | |
| 2767 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2768 if (!expression) | |
| 2769 return NULL; | |
| 2770 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2771 if (!suite_seq) |
| 35742 | 2772 return NULL; |
|
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|
2773 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2774 } |
| 2775 else if (NCH(n) == 7) { | |
| 2776 expr_ty expression; | |
| 2777 asdl_seq *seq1, *seq2; | |
| 2778 | |
| 2779 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2780 if (!expression) | |
| 2781 return NULL; | |
| 2782 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2783 if (!seq1) |
| 35742 | 2784 return NULL; |
| 2785 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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parents:
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|
2786 if (!seq2) |
| 35742 | 2787 return NULL; |
| 2788 | |
|
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|
2789 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2790 } |
|
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|
2791 |
|
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changeset
|
2792 PyErr_Format(PyExc_SystemError, |
|
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|
2793 "wrong number of tokens for 'while' statement: %d", |
|
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|
2794 NCH(n)); |
|
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|
2795 return NULL; |
| 35742 | 2796 } |
| 2797 | |
| 2798 static stmt_ty | |
| 2799 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2800 { | |
|
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|
2801 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2802 expr_ty expression; |
|
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|
2803 expr_ty target, first; |
|
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|
2804 const node *node_target; |
| 35742 | 2805 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2806 REQ(n, for_stmt); | |
| 2807 | |
| 2808 if (NCH(n) == 9) { | |
|
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|
2809 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2810 if (!seq) |
| 2811 return NULL; | |
| 2812 } | |
| 2813 | |
|
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|
2814 node_target = CHILD(n, 1); |
|
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|
2815 _target = ast_for_exprlist(c, node_target, Store); |
|
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|
2816 if (!_target) |
| 35742 | 2817 return NULL; |
|
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|
2818 /* Check the # of children rather than the length of _target, since |
|
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|
2819 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2820 first = (expr_ty)asdl_seq_GET(_target, 0); |
|
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|
2821 if (NCH(node_target) == 1) |
|
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|
2822 target = first; |
| 35742 | 2823 else |
|
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|
2824 target = Tuple(_target, Store, first->lineno, first->col_offset, c->c_arena); |
| 35742 | 2825 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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changeset
|
2826 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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|
2827 if (!expression) |
| 35742 | 2828 return NULL; |
| 2829 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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|
2830 if (!suite_seq) |
| 35742 | 2831 return NULL; |
| 2832 | |
|
37879
f731859e9b3b
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Thomas Wouters <thomas@python.org>
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|
2833 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
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Thomas Wouters <thomas@python.org>
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changeset
|
2834 c->c_arena); |
| 35742 | 2835 } |
| 2836 | |
| 2837 static excepthandler_ty | |
| 2838 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2839 { | |
|
41824
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|
2840 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2841 REQ(exc, except_clause); |
| 2842 REQ(body, suite); | |
| 2843 | |
| 2844 if (NCH(exc) == 1) { | |
| 2845 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2846 if (!suite_seq) | |
| 2847 return NULL; | |
| 2848 | |
|
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|
2849 return ExceptHandler(NULL, NULL, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
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|
2850 exc->n_col_offset, c->c_arena); |
| 35742 | 2851 } |
| 2852 else if (NCH(exc) == 2) { | |
| 2853 expr_ty expression; | |
| 2854 asdl_seq *suite_seq; | |
| 2855 | |
| 2856 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2857 if (!expression) | |
| 2858 return NULL; | |
| 2859 suite_seq = ast_for_suite(c, body); | |
|
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changeset
|
2860 if (!suite_seq) |
| 35742 | 2861 return NULL; |
| 2862 | |
|
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|
2863 return ExceptHandler(expression, NULL, suite_seq, LINENO(exc), |
|
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|
2864 exc->n_col_offset, c->c_arena); |
| 35742 | 2865 } |
| 2866 else if (NCH(exc) == 4) { | |
| 2867 asdl_seq *suite_seq; | |
| 2868 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
|
2869 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
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|
2870 if (!e) |
| 35742 | 2871 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
|
2872 if (forbidden_name(e, CHILD(exc, 3), 0)) |
|
c45e331238ae
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|
2873 return NULL; |
|
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|
2874 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
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|
2875 if (!expression) |
|
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|
2876 return NULL; |
| 35742 | 2877 suite_seq = ast_for_suite(c, body); |
|
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|
2878 if (!suite_seq) |
| 35742 | 2879 return NULL; |
| 2880 | |
|
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|
2881 return ExceptHandler(expression, e, suite_seq, LINENO(exc), |
|
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|
2882 exc->n_col_offset, c->c_arena); |
| 35742 | 2883 } |
|
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|
2884 |
|
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changeset
|
2885 PyErr_Format(PyExc_SystemError, |
|
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diff
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|
2886 "wrong number of children for 'except' clause: %d", |
|
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|
2887 NCH(exc)); |
|
de16a85c3b4c
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changeset
|
2888 return NULL; |
| 35742 | 2889 } |
| 2890 | |
| 2891 static stmt_ty | |
| 2892 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2893 { | |
|
36066
719ba02d2e2c
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parents:
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diff
changeset
|
2894 const int nch = NCH(n); |
|
719ba02d2e2c
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36065
diff
changeset
|
2895 int n_except = (nch - 3)/3; |
|
719ba02d2e2c
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parents:
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diff
changeset
|
2896 asdl_seq *body, *orelse = NULL, *finally = NULL; |
|
719ba02d2e2c
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parents:
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diff
changeset
|
2897 |
| 35742 | 2898 REQ(n, try_stmt); |
| 2899 | |
|
36066
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diff
changeset
|
2900 body = ast_for_suite(c, CHILD(n, 2)); |
|
719ba02d2e2c
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parents:
36065
diff
changeset
|
2901 if (body == NULL) |
|
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SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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parents:
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diff
changeset
|
2902 return NULL; |
|
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changeset
|
2903 |
|
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parents:
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diff
changeset
|
2904 if (TYPE(CHILD(n, nch - 3)) == NAME) { |
|
719ba02d2e2c
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diff
changeset
|
2905 if (strcmp(STR(CHILD(n, nch - 3)), "finally") == 0) { |
|
719ba02d2e2c
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diff
changeset
|
2906 if (nch >= 9 && TYPE(CHILD(n, nch - 6)) == NAME) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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parents:
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diff
changeset
|
2907 /* we can assume it's an "else", |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2908 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
|
2909 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
|
2910 orelse = ast_for_suite(c, CHILD(n, nch - 4)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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parents:
36065
diff
changeset
|
2911 if (orelse == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2912 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2913 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2914 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2915 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2916 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
|
2917 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
|
2918 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2919 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2920 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2921 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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parents:
36065
diff
changeset
|
2922 /* 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
|
2923 otherwise it would have a type of except_clause */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
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parents:
36065
diff
changeset
|
2924 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
|
2925 if (orelse == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2926 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2927 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2928 } |
| 35742 | 2929 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2930 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
|
2931 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2932 return NULL; |
| 2933 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2934 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2935 if (n_except > 0) { |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
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diff
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|
2936 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2937 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
|
2938 /* 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
|
2939 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
|
2940 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
|
2941 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2942 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2943 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
|
2944 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
|
2945 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
|
2946 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2947 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2948 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
|
2949 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2950 |
|
40450
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diff
changeset
|
2951 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
|
2952 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
|
2953 if (!finally) |
|
40450
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Four months of trunk changes (including a few releases...)
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changeset
|
2954 return except_st; |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2955 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2956 /* 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
|
2957 TryFinally to emulate try ... except ... finally */ |
|
40450
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Four months of trunk changes (including a few releases...)
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|
2958 body = asdl_seq_new(1, c->c_arena); |
|
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Four months of trunk changes (including a few releases...)
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|
2959 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
2960 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
2961 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
|
2962 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2963 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2964 /* 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
|
2965 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
|
2966 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2967 } |
| 2968 | |
|
54338
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changeset
|
2969 /* with_item: test ['as' expr] */ |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2970 static stmt_ty |
|
54338
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|
2971 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
|
2972 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2973 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
2974 |
|
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changeset
|
2975 REQ(n, with_item); |
|
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changeset
|
2976 context_expr = ast_for_expr(c, CHILD(n, 0)); |
|
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changeset
|
2977 if (NCH(n) == 3) { |
|
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diff
changeset
|
2978 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
|
2979 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2980 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2981 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2982 } |
|
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
|
2983 if (!set_context(c, optional_vars, Store, n)) { |
|
40450
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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changeset
|
2984 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
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|
2985 } |
|
36695
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diff
changeset
|
2986 } |
|
b6d2f6fd3e11
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Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
2987 |
|
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changeset
|
2988 return With(context_expr, optional_vars, content, LINENO(n), |
|
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changeset
|
2989 n->n_col_offset, c->c_arena); |
|
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changeset
|
2990 } |
|
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changeset
|
2991 |
|
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diff
changeset
|
2992 /* with_stmt: 'with' with_item (',' with_item)* ':' suite */ |
|
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changeset
|
2993 static stmt_ty |
|
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changeset
|
2994 ast_for_with_stmt(struct compiling *c, const node *n) |
|
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|
2995 { |
|
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changeset
|
2996 int i; |
|
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changeset
|
2997 stmt_ty ret; |
|
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|
2998 asdl_seq *inner; |
|
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changeset
|
2999 |
|
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|
3000 REQ(n, with_stmt); |
|
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|
3001 |
|
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changeset
|
3002 /* process the with items inside-out */ |
|
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changeset
|
3003 i = NCH(n) - 1; |
|
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|
3004 /* the suite of the innermost with item is the suite of the with stmt */ |
|
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|
3005 inner = ast_for_suite(c, CHILD(n, i)); |
|
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changeset
|
3006 if (!inner) |
|
36695
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parents:
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|
3007 return NULL; |
|
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|
3008 |
|
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changeset
|
3009 for (;;) { |
|
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changeset
|
3010 i -= 2; |
|
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changeset
|
3011 ret = ast_for_with_item(c, CHILD(n, i), inner); |
|
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|
3012 if (!ret) |
|
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|
3013 return NULL; |
|
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changeset
|
3014 /* was this the last item? */ |
|
287ce30d08b5
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Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
3015 if (i == 1) |
|
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Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
3016 break; |
|
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Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
3017 /* if not, wrap the result so far in a new sequence */ |
|
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Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
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diff
changeset
|
3018 inner = asdl_seq_new(1, c->c_arena); |
|
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Merged revisions 72924 via svnmerge from
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parents:
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changeset
|
3019 if (!inner) |
|
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changeset
|
3020 return NULL; |
|
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parents:
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diff
changeset
|
3021 asdl_seq_SET(inner, 0, ret); |
|
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b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3022 } |
|
54338
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|
3023 |
|
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parents:
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diff
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|
3024 return ret; |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3025 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3026 |
| 35742 | 3027 static stmt_ty |
|
41824
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|
3028 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 3029 { |
|
41226
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Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
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changeset
|
3030 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
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|
3031 PyObject *classname; |
|
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Implement PEP 3115 -- new metaclass syntax and semantics.
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parents:
40965
diff
changeset
|
3032 asdl_seq *s; |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3033 expr_ty call; |
|
41226
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Implement PEP 3115 -- new metaclass syntax and semantics.
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parents:
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changeset
|
3034 |
| 35742 | 3035 REQ(n, classdef); |
| 3036 | |
|
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Implement PEP 3115 -- new metaclass syntax and semantics.
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parents:
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changeset
|
3037 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 3038 s = ast_for_suite(c, CHILD(n, 3)); |
| 3039 if (!s) | |
| 3040 return NULL; | |
|
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|
3041 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3042 if (!classname) |
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|
3043 return NULL; |
|
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
|
3044 if (forbidden_name(classname, CHILD(n, 3), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
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|
3045 return NULL; |
|
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|
3046 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
|
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|
3047 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3048 } |
|
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parents:
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|
3049 |
|
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Implement PEP 3115 -- new metaclass syntax and semantics.
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parents:
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changeset
|
3050 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
40450
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parents:
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|
3051 s = ast_for_suite(c, CHILD(n,5)); |
|
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|
3052 if (!s) |
|
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|
3053 return NULL; |
|
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|
3054 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3055 if (!classname) |
|
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parents:
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|
3056 return NULL; |
|
54954
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In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3057 if (forbidden_name(classname, CHILD(n, 3), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
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|
3058 return NULL; |
|
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|
3059 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
|
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|
3060 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3061 } |
| 3062 | |
|
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parents:
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diff
changeset
|
3063 /* class NAME '(' arglist ')' ':' suite */ |
|
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Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3064 /* build up a fake Call node so we can extract its pieces */ |
|
49852
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parents:
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|
3065 { |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3066 PyObject *dummy_name; |
|
30d01a5f517e
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parents:
49847
diff
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|
3067 expr_ty dummy; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
3068 dummy_name = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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parents:
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diff
changeset
|
3069 if (!dummy_name) |
|
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parents:
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diff
changeset
|
3070 return NULL; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
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parents:
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diff
changeset
|
3071 dummy = Name(dummy_name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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parents:
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|
3072 call = ast_for_call(c, CHILD(n, 3), dummy); |
|
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parents:
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|
3073 if (!call) |
|
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parents:
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|
3074 return NULL; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
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parents:
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diff
changeset
|
3075 } |
| 35742 | 3076 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
|
3077 if (!s) |
| 35742 | 3078 return NULL; |
|
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|
3079 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3080 if (!classname) |
|
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|
3081 return NULL; |
|
54954
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In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3082 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
|
3083 return NULL; |
|
41226
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Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3084 |
|
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changeset
|
3085 return ClassDef(classname, call->v.Call.args, call->v.Call.keywords, |
|
41226
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Implement PEP 3115 -- new metaclass syntax and semantics.
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parents:
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changeset
|
3086 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
41824
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parents:
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changeset
|
3087 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3088 } |
| 3089 | |
| 3090 static stmt_ty | |
| 3091 ast_for_stmt(struct compiling *c, const node *n) | |
| 3092 { | |
| 3093 if (TYPE(n) == stmt) { | |
|
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|
3094 assert(NCH(n) == 1); |
|
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Four months of trunk changes (including a few releases...)
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parents:
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changeset
|
3095 n = CHILD(n, 0); |
| 35742 | 3096 } |
| 3097 if (TYPE(n) == simple_stmt) { | |
|
40450
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|
3098 assert(num_stmts(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
3099 n = CHILD(n, 0); |
| 35742 | 3100 } |
| 3101 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
3102 n = CHILD(n, 0); |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3103 /* small_stmt: expr_stmt | del_stmt | pass_stmt | flow_stmt |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
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parents:
40941
diff
changeset
|
3104 | import_stmt | global_stmt | nonlocal_stmt | assert_stmt |
|
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parents:
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|
3105 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3106 switch (TYPE(n)) { |
| 35742 | 3107 case expr_stmt: |
| 3108 return ast_for_expr_stmt(c, n); | |
| 3109 case del_stmt: | |
| 3110 return ast_for_del_stmt(c, n); | |
| 3111 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
|
3112 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3113 case flow_stmt: |
| 3114 return ast_for_flow_stmt(c, n); | |
| 3115 case import_stmt: | |
| 3116 return ast_for_import_stmt(c, n); | |
| 3117 case global_stmt: | |
| 3118 return ast_for_global_stmt(c, n); | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3119 case nonlocal_stmt: |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3120 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3121 case assert_stmt: |
| 3122 return ast_for_assert_stmt(c, n); | |
| 3123 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3124 PyErr_Format(PyExc_SystemError, |
| 35742 | 3125 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3126 TYPE(n), NCH(n)); | |
| 3127 return NULL; | |
| 3128 } | |
| 3129 } | |
| 3130 else { | |
| 3131 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
41824
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changeset
|
3132 | funcdef | classdef | decorated |
|
40450
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parents:
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diff
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|
3133 */ |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3134 node *ch = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
3135 REQ(n, compound_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3136 switch (TYPE(ch)) { |
| 35742 | 3137 case if_stmt: |
| 3138 return ast_for_if_stmt(c, ch); | |
| 3139 case while_stmt: | |
| 3140 return ast_for_while_stmt(c, ch); | |
| 3141 case for_stmt: | |
| 3142 return ast_for_for_stmt(c, ch); | |
| 3143 case try_stmt: | |
| 3144 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3145 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3146 return ast_for_with_stmt(c, ch); |
| 35742 | 3147 case funcdef: |
|
41824
24b60622b944
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parents:
41717
diff
changeset
|
3148 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3149 case classdef: |
|
41824
24b60622b944
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parents:
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changeset
|
3150 return ast_for_classdef(c, ch, NULL); |
|
24b60622b944
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parents:
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diff
changeset
|
3151 case decorated: |
|
24b60622b944
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Guido van Rossum <guido@python.org>
parents:
41717
diff
changeset
|
3152 return ast_for_decorated(c, ch); |
| 35742 | 3153 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3154 PyErr_Format(PyExc_SystemError, |
| 35742 | 3155 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3156 TYPE(n), NCH(n)); | |
| 3157 return NULL; | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
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diff
changeset
|
3158 } |
| 35742 | 3159 } |
| 3160 } | |
| 3161 | |
| 3162 static PyObject * | |
|
46664
031dfe455585
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Christian Heimes <christian@cheimes.de>
parents:
46306
diff
changeset
|
3163 parsenumber(struct compiling *c, const char *s) |
| 35742 | 3164 { |
|
41554
06145fbc7ab9
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parents:
41509
diff
changeset
|
3165 const char *end; |
|
06145fbc7ab9
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Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
3166 long x; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
3167 double dx; |
| 35742 | 3168 #ifndef WITHOUT_COMPLEX |
|
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|
3169 Py_complex compl; |
|
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|
3170 int imflag; |
| 35742 | 3171 #endif |
| 3172 | |
|
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|
3173 assert(s != NULL); |
|
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|
3174 errno = 0; |
|
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|
3175 end = s + strlen(s) - 1; |
| 35742 | 3176 #ifndef WITHOUT_COMPLEX |
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3177 imflag = *end == 'j' || *end == 'J'; |
| 35742 | 3178 #endif |
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3179 if (s[0] == '0') { |
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3180 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
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|
3181 if (x < 0 && errno == 0) { |
|
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|
3182 return PyLong_FromString((char *)s, |
|
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|
3183 (char **)0, |
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|
3184 0); |
|
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|
3185 } |
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3186 } |
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3187 else |
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3188 x = PyOS_strtol((char *)s, (char **)&end, 0); |
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|
3189 if (*end == '\0') { |
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|
3190 if (errno != 0) |
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3191 return PyLong_FromString((char *)s, (char **)0, 0); |
|
44099
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|
3192 return PyLong_FromLong(x); |
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3193 } |
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3194 /* XXX Huge floats may silently fail */ |
| 35742 | 3195 #ifndef WITHOUT_COMPLEX |
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3196 if (imflag) { |
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|
3197 compl.real = 0.; |
|
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|
3198 compl.imag = PyOS_string_to_double(s, (char **)&end, NULL); |
|
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|
3199 if (compl.imag == -1.0 && PyErr_Occurred()) |
|
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|
3200 return NULL; |
|
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|
3201 return PyComplex_FromCComplex(compl); |
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3202 } |
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3203 else |
| 35742 | 3204 #endif |
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3205 { |
|
53707
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|
3206 dx = PyOS_string_to_double(s, NULL, NULL); |
|
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|
3207 if (dx == -1.0 && PyErr_Occurred()) |
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|
3208 return NULL; |
|
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|
3209 return PyFloat_FromDouble(dx); |
|
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3210 } |
| 35742 | 3211 } |
| 3212 | |
| 3213 static PyObject * | |
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|
3214 decode_utf8(struct compiling *c, const char **sPtr, const char *end, char* encoding) |
| 35742 | 3215 { |
|
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3216 PyObject *u, *v; |
|
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|
3217 char *s, *t; |
|
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3218 t = s = (char *)*sPtr; |
|
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|
3219 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
|
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3220 while (s < end && (*s & 0x80)) s++; |
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3221 *sPtr = s; |
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3222 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
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3223 if (u == NULL) |
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3224 return NULL; |
|
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|
3225 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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|
3226 Py_DECREF(u); |
|
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3227 return v; |
| 35742 | 3228 } |
| 3229 | |
| 3230 static PyObject * | |
|
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|
3231 decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, const char *encoding) |
| 35742 | 3232 { |
|
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3233 PyObject *v, *u; |
|
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|
3234 char *buf; |
|
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|
3235 char *p; |
|
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|
3236 const char *end; |
|
43819
068655054b0d
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|
3237 |
|
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|
3238 if (encoding == NULL) { |
|
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|
3239 buf = (char *)s; |
|
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|
3240 u = NULL; |
|
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|
3241 } else { |
|
48330
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|
3242 /* check for integer overflow */ |
|
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|
3243 if (len > PY_SIZE_MAX / 4) |
|
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3244 return NULL; |
|
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|
3245 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ |
|
47301
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|
3246 u = PyBytes_FromStringAndSize((char *)NULL, len * 4); |
|
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|
3247 if (u == NULL) |
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|
3248 return NULL; |
|
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|
3249 p = buf = PyBytes_AsString(u); |
|
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3250 end = s + len; |
|
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|
3251 while (s < end) { |
|
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|
3252 if (*s == '\\') { |
|
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|
3253 *p++ = *s++; |
|
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|
3254 if (*s & 0x80) { |
|
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|
3255 strcpy(p, "u005c"); |
|
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|
3256 p += 5; |
|
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|
3257 } |
|
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|
3258 } |
|
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|
3259 if (*s & 0x80) { /* XXX inefficient */ |
|
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|
3260 PyObject *w; |
|
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|
3261 char *r; |
|
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|
3262 Py_ssize_t rn, i; |
|
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|
3263 w = decode_utf8(c, &s, end, "utf-16-be"); |
|
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|
3264 if (w == NULL) { |
|
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|
3265 Py_DECREF(u); |
|
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|
3266 return NULL; |
|
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|
3267 } |
|
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|
3268 r = PyBytes_AS_STRING(w); |
|
44351
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#1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT.
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|
3269 rn = Py_SIZE(w); |
|
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|
3270 assert(rn % 2 == 0); |
|
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|
3271 for (i = 0; i < rn; i += 2) { |
|
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|
3272 sprintf(p, "\\u%02x%02x", |
|
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|
3273 r[i + 0] & 0xFF, |
|
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|
3274 r[i + 1] & 0xFF); |
|
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|
3275 p += 6; |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3276 } |
|
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|
3277 Py_DECREF(w); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3278 } else { |
|
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Guido van Rossum <guido@python.org>
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|
3279 *p++ = *s++; |
|
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Guido van Rossum <guido@python.org>
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|
3280 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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|
3281 } |
|
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Guido van Rossum <guido@python.org>
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|
3282 len = p - buf; |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3283 s = buf; |
|
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|
3284 } |
|
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|
3285 if (rawmode) |
|
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|
3286 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
|
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|
3287 else |
|
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Guido van Rossum <guido@python.org>
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|
3288 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
|
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|
3289 Py_XDECREF(u); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3290 return v; |
| 35742 | 3291 } |
| 3292 | |
| 3293 /* 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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diff
changeset
|
3294 * and r &/or b prefixes (if any), and embedded escape sequences (if any). |
| 35742 | 3295 * parsestr parses it, and returns the decoded Python string object. |
| 3296 */ | |
| 3297 static PyObject * | |
|
46120
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|
3298 parsestr(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3299 { |
|
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|
3300 size_t len; |
|
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|
3301 const char *s = STR(n); |
|
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|
3302 int quote = Py_CHARMASK(*s); |
|
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|
3303 int rawmode = 0; |
|
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|
3304 int need_encoding; |
|
43777
0d462d789b18
Merging the py3k-pep3137 branch back into the py3k branch.
Guido van Rossum <guido@python.org>
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|
3305 if (isalpha(quote)) { |
|
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|
3306 if (quote == 'b' || quote == 'B') { |
|
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|
3307 quote = *++s; |
|
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|
3308 *bytesmode = 1; |
|
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|
3309 } |
|
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|
3310 if (quote == 'r' || quote == 'R') { |
|
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|
3311 quote = *++s; |
|
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|
3312 rawmode = 1; |
|
40450
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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|
3313 } |
|
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|
3314 } |
|
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|
3315 if (quote != '\'' && quote != '\"') { |
|
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|
3316 PyErr_BadInternalCall(); |
|
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|
3317 return NULL; |
|
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|
3318 } |
|
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|
3319 s++; |
|
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|
3320 len = strlen(s); |
|
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|
3321 if (len > INT_MAX) { |
|
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|
3322 PyErr_SetString(PyExc_OverflowError, |
|
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|
3323 "string to parse is too long"); |
|
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|
3324 return NULL; |
|
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|
3325 } |
|
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|
3326 if (s[--len] != quote) { |
|
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|
3327 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3328 return NULL; |
|
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|
3329 } |
|
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|
3330 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
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|
3331 s += 2; |
|
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|
3332 len -= 2; |
|
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|
3333 if (s[--len] != quote || s[--len] != quote) { |
|
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|
3334 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3335 return NULL; |
| 40894 | 3336 } |
|
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|
3337 } |
|
46306
b10292eafb07
Reverted r62128 on Guido's orders
Benjamin Peterson <benjamin@python.org>
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changeset
|
3338 if (!*bytesmode && !rawmode) { |
|
46664
031dfe455585
Merged revisions 62425-62429,62434-62436,62441,62444,62446-62448,62450-62455,62463,62465-62466,62469,62474,62476-62478,62480,62485,62492,62497-62498,62500,62507,62513-62514,62516,62521,62531,62535,62545-62546,62548-62551,62553-62559,62569,62574,62577,62593,62595,62604-62606,62608,62616,62626-62627,62636,62638,62644-62645,62647-62648,62651-62653,62656,62661,62663,62680,62686-62687,62696,62699-62703,62711 via svnmerge from
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|
3339 return decode_unicode(c, s, len, rawmode, c->c_encoding); |
|
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|
3340 } |
|
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|
3341 if (*bytesmode) { |
|
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|
3342 /* Disallow non-ascii characters (but not escapes) */ |
|
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|
3343 const char *c; |
|
06145fbc7ab9
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|
3344 for (c = s; *c; c++) { |
|
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Merged revisions 53952-54987 via svnmerge from
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|
3345 if (Py_CHARMASK(*c) >= 0x80) { |
|
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changeset
|
3346 ast_error(n, "bytes can only contain ASCII " |
|
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|
3347 "literal characters."); |
|
06145fbc7ab9
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|
3348 return NULL; |
|
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|
3349 } |
|
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|
3350 } |
|
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|
3351 } |
|
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changeset
|
3352 need_encoding = (!*bytesmode && c->c_encoding != NULL && |
|
49539
481ad3d9ffd1
Latin-1 source code was not being properly decoded when passed through
Brett Cannon <bcannon@gmail.com>
parents:
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diff
changeset
|
3353 strcmp(c->c_encoding, "utf-8") != 0); |
|
41554
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|
3354 if (rawmode || strchr(s, '\\') == NULL) { |
|
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|
3355 if (need_encoding) { |
|
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changeset
|
3356 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
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diff
changeset
|
3357 if (u == NULL || !*bytesmode) |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
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|
3358 return u; |
|
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|
3359 v = PyUnicode_AsEncodedString(u, c->c_encoding, NULL); |
|
41554
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|
3360 Py_DECREF(u); |
|
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|
3361 return v; |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
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changeset
|
3362 } else if (*bytesmode) { |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
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changeset
|
3363 return PyBytes_FromStringAndSize(s, len); |
|
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|
3364 } else if (strcmp(c->c_encoding, "utf-8") == 0) { |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
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|
3365 return PyUnicode_FromStringAndSize(s, len); |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
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|
3366 } else { |
|
068655054b0d
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Guido van Rossum <guido@python.org>
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changeset
|
3367 return PyUnicode_DecodeLatin1(s, len, NULL); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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|
3368 } |
|
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|
3369 } |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
parents:
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changeset
|
3370 return PyBytes_DecodeEscape(s, len, NULL, 1, |
|
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|
3371 need_encoding ? c->c_encoding : NULL); |
| 35742 | 3372 } |
| 3373 | |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3374 /* Build a Python string object out of a STRING+ atom. This takes care of |
| 35742 | 3375 * compile-time literal catenation, calling parsestr() on each piece, and |
| 3376 * pasting the intermediate results together. | |
| 3377 */ | |
| 3378 static PyObject * | |
| 40894 | 3379 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3380 { |
|
41554
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|
3381 PyObject *v; |
|
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|
3382 int i; |
|
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changeset
|
3383 REQ(CHILD(n, 0), STRING); |
|
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|
3384 v = parsestr(c, CHILD(n, 0), bytesmode); |
|
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|
3385 if (v != NULL) { |
|
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|
3386 /* String literal concatenation */ |
|
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|
3387 for (i = 1; i < NCH(n); i++) { |
|
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|
3388 PyObject *s; |
|
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|
3389 int subbm = 0; |
|
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|
3390 s = parsestr(c, CHILD(n, i), &subbm); |
|
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|
3391 if (s == NULL) |
|
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|
3392 goto onError; |
|
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|
3393 if (*bytesmode != subbm) { |
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43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
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3394 ast_error(n, "cannot mix bytes and nonbytes literals"); |
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3395 goto onError; |
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3396 } |
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47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
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3397 if (PyBytes_Check(v) && PyBytes_Check(s)) { |
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23ab586c427a
Renamed PyString to PyBytes
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3398 PyBytes_ConcatAndDel(&v, s); |
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3399 if (v == NULL) |
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3400 goto onError; |
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3401 } |
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3402 else { |
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3403 PyObject *temp = PyUnicode_Concat(v, s); |
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3404 Py_DECREF(s); |
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3405 Py_DECREF(v); |
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3406 v = temp; |
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3407 if (v == NULL) |
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3408 goto onError; |
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3409 } |
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40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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3410 } |
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3411 } |
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3412 return v; |
| 35742 | 3413 |
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3414 onError: |
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3415 Py_XDECREF(v); |
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3416 return NULL; |
| 35742 | 3417 } |