Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 46909:ef4ec968fdb6
Merged revisions 63078 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
When forward porting this, I added _PyUnicode_InsertThousandsGrouping.
........
r63078 | eric.smith | 2008-05-11 15:52:48 -0400 (Sun, 11 May 2008) | 14 lines
Addresses issue 2802: 'n' formatting for integers.
Adds 'n' as a format specifier for integers, to mirror the same
specifier which is already available for floats. 'n' is the same as
'd', but inserts the current locale-specific thousands grouping.
I added this as a stringlib function, but it's only used by str type,
not unicode. This is because of an implementation detail in
unicode.format(), which does its own str->unicode conversion. But the
unicode version will be needed in 3.0, and it may be needed by other
code eventually in 2.6 (maybe decimal?), so I left it as a stringlib
implementation. As long as the unicode version isn't instantiated,
there's no overhead for this.
........
| author | Eric Smith <eric@trueblade.com> |
|---|---|
| date | Sun, 11 May 2008 21:00:57 +0000 |
| parents | 031dfe455585 |
| children | 23ab586c427a |
| 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 = PyUnicode_AS_UNICODE(id); |
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55 /* Check whether there are non-ASCII characters in the |
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56 identifier; if so, normalize to NFKC. */ |
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57 for (; *u; u++) { |
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58 if (*u >= 128) { |
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59 PyObject *m = PyImport_ImportModuleNoBlock("unicodedata"); |
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60 PyObject *id2; |
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61 if (!m) |
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62 return NULL; |
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63 id2 = PyObject_CallMethod(m, "normalize", "sO", "NFKC", id); |
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64 Py_DECREF(m); |
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65 if (!id2) |
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66 return NULL; |
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67 Py_DECREF(id); |
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68 id = id2; |
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69 break; |
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70 } |
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71 } |
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72 PyUnicode_InternInPlace(&id); |
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73 PyArena_AddPyObject(arena, id); |
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74 return id; |
| 35742 | 75 } |
| 76 | |
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77 #define NEW_IDENTIFIER(n) new_identifier(STR(n), c->c_arena) |
| 35742 | 78 |
| 79 /* This routine provides an invalid object for the syntax error. | |
| 80 The outermost routine must unpack this error and create the | |
| 81 proper object. We do this so that we don't have to pass | |
| 82 the filename to everything function. | |
| 83 | |
| 84 XXX Maybe we should just pass the filename... | |
| 85 */ | |
| 86 | |
| 87 static int | |
| 88 ast_error(const node *n, const char *errstr) | |
| 89 { | |
| 90 PyObject *u = Py_BuildValue("zi", errstr, LINENO(n)); | |
| 91 if (!u) | |
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92 return 0; |
| 35742 | 93 PyErr_SetObject(PyExc_SyntaxError, u); |
| 94 Py_DECREF(u); | |
| 95 return 0; | |
| 96 } | |
| 97 | |
| 98 static void | |
| 99 ast_error_finish(const char *filename) | |
| 100 { | |
| 101 PyObject *type, *value, *tback, *errstr, *loc, *tmp; | |
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102 long lineno; |
| 35742 | 103 |
| 104 assert(PyErr_Occurred()); | |
| 105 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
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106 return; |
| 35742 | 107 |
| 108 PyErr_Fetch(&type, &value, &tback); | |
| 109 errstr = PyTuple_GetItem(value, 0); | |
| 110 if (!errstr) | |
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111 return; |
| 35742 | 112 Py_INCREF(errstr); |
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113 lineno = PyLong_AsLong(PyTuple_GetItem(value, 1)); |
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114 if (lineno == -1) { |
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115 Py_DECREF(errstr); |
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116 return; |
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117 } |
| 35742 | 118 Py_DECREF(value); |
| 119 | |
| 120 loc = PyErr_ProgramText(filename, lineno); | |
| 121 if (!loc) { | |
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122 Py_INCREF(Py_None); |
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123 loc = Py_None; |
| 35742 | 124 } |
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125 tmp = Py_BuildValue("(zlOO)", filename, lineno, Py_None, loc); |
| 35742 | 126 Py_DECREF(loc); |
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127 if (!tmp) { |
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128 Py_DECREF(errstr); |
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129 return; |
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130 } |
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131 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 132 Py_DECREF(errstr); |
| 133 Py_DECREF(tmp); | |
| 134 if (!value) | |
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135 return; |
| 35742 | 136 PyErr_Restore(type, value, tback); |
| 137 } | |
| 138 | |
| 139 /* num_stmts() returns number of contained statements. | |
| 140 | |
| 141 Use this routine to determine how big a sequence is needed for | |
| 142 the statements in a parse tree. Its raison d'etre is this bit of | |
| 143 grammar: | |
| 144 | |
| 145 stmt: simple_stmt | compound_stmt | |
| 146 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 147 | |
| 148 A simple_stmt can contain multiple small_stmt elements joined | |
| 149 by semicolons. If the arg is a simple_stmt, the number of | |
| 150 small_stmt elements is returned. | |
| 151 */ | |
| 152 | |
| 153 static int | |
| 154 num_stmts(const node *n) | |
| 155 { | |
| 156 int i, l; | |
| 157 node *ch; | |
| 158 | |
| 159 switch (TYPE(n)) { | |
| 160 case single_input: | |
| 161 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 162 return 0; | |
| 163 else | |
| 164 return num_stmts(CHILD(n, 0)); | |
| 165 case file_input: | |
| 166 l = 0; | |
| 167 for (i = 0; i < NCH(n); i++) { | |
| 168 ch = CHILD(n, i); | |
| 169 if (TYPE(ch) == stmt) | |
| 170 l += num_stmts(ch); | |
| 171 } | |
| 172 return l; | |
| 173 case stmt: | |
| 174 return num_stmts(CHILD(n, 0)); | |
| 175 case compound_stmt: | |
| 176 return 1; | |
| 177 case simple_stmt: | |
| 178 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 179 case suite: | |
| 180 if (NCH(n) == 1) | |
| 181 return num_stmts(CHILD(n, 0)); | |
| 182 else { | |
| 183 l = 0; | |
| 184 for (i = 2; i < (NCH(n) - 1); i++) | |
| 185 l += num_stmts(CHILD(n, i)); | |
| 186 return l; | |
| 187 } | |
| 188 default: { | |
| 189 char buf[128]; | |
| 190 | |
| 191 sprintf(buf, "Non-statement found: %d %d\n", | |
| 192 TYPE(n), NCH(n)); | |
| 193 Py_FatalError(buf); | |
| 194 } | |
| 195 } | |
| 196 assert(0); | |
| 197 return 0; | |
| 198 } | |
| 199 | |
| 200 /* Transform the CST rooted at node * to the appropriate AST | |
| 201 */ | |
| 202 | |
| 203 mod_ty | |
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204 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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205 PyArena *arena) |
| 35742 | 206 { |
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207 int i, j, k, num; |
| 35742 | 208 asdl_seq *stmts = NULL; |
| 209 stmt_ty s; | |
| 210 node *ch; | |
| 211 struct compiling c; | |
| 212 | |
| 213 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
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214 c.c_encoding = "utf-8"; |
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215 if (TYPE(n) == encoding_decl) { |
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216 #if 0 |
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217 ast_error(n, "encoding declaration in Unicode string"); |
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218 goto error; |
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219 #endif |
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220 n = CHILD(n, 0); |
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221 } |
| 35742 | 222 } else if (TYPE(n) == encoding_decl) { |
| 223 c.c_encoding = STR(n); | |
| 224 n = CHILD(n, 0); | |
| 225 } else { | |
| 42403 | 226 /* PEP 3120 */ |
| 227 c.c_encoding = "utf-8"; | |
| 35742 | 228 } |
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229 c.c_arena = arena; |
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230 c.c_filename = filename; |
| 35742 | 231 |
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232 k = 0; |
| 35742 | 233 switch (TYPE(n)) { |
| 234 case file_input: | |
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235 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 236 if (!stmts) |
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237 return NULL; |
| 35742 | 238 for (i = 0; i < NCH(n) - 1; i++) { |
| 239 ch = CHILD(n, i); | |
| 240 if (TYPE(ch) == NEWLINE) | |
| 241 continue; | |
| 242 REQ(ch, stmt); | |
| 243 num = num_stmts(ch); | |
| 244 if (num == 1) { | |
| 245 s = ast_for_stmt(&c, ch); | |
| 246 if (!s) | |
| 247 goto error; | |
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248 asdl_seq_SET(stmts, k++, s); |
| 35742 | 249 } |
| 250 else { | |
| 251 ch = CHILD(ch, 0); | |
| 252 REQ(ch, simple_stmt); | |
| 253 for (j = 0; j < num; j++) { | |
| 254 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 255 if (!s) | |
| 256 goto error; | |
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257 asdl_seq_SET(stmts, k++, s); |
| 35742 | 258 } |
| 259 } | |
| 260 } | |
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261 return Module(stmts, arena); |
| 35742 | 262 case eval_input: { |
| 263 expr_ty testlist_ast; | |
| 264 | |
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265 /* XXX Why not comp_for here? */ |
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266 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 267 if (!testlist_ast) |
| 268 goto error; | |
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269 return Expression(testlist_ast, arena); |
| 35742 | 270 } |
| 271 case single_input: | |
| 272 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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273 stmts = asdl_seq_new(1, arena); |
| 35742 | 274 if (!stmts) |
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275 goto error; |
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276 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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277 arena)); |
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278 if (!asdl_seq_GET(stmts, 0)) |
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279 goto error; |
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280 return Interactive(stmts, arena); |
| 35742 | 281 } |
| 282 else { | |
| 283 n = CHILD(n, 0); | |
| 284 num = num_stmts(n); | |
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285 stmts = asdl_seq_new(num, arena); |
| 35742 | 286 if (!stmts) |
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287 goto error; |
| 35742 | 288 if (num == 1) { |
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289 s = ast_for_stmt(&c, n); |
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290 if (!s) |
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291 goto error; |
| 35742 | 292 asdl_seq_SET(stmts, 0, s); |
| 293 } | |
| 294 else { | |
| 295 /* Only a simple_stmt can contain multiple statements. */ | |
| 296 REQ(n, simple_stmt); | |
| 297 for (i = 0; i < NCH(n); i += 2) { | |
| 298 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 299 break; | |
| 300 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 301 if (!s) | |
| 302 goto error; | |
| 303 asdl_seq_SET(stmts, i / 2, s); | |
| 304 } | |
| 305 } | |
| 306 | |
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307 return Interactive(stmts, arena); |
| 35742 | 308 } |
| 309 default: | |
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310 PyErr_Format(PyExc_SystemError, |
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311 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 312 goto error; |
| 313 } | |
| 314 error: | |
| 315 ast_error_finish(filename); | |
| 316 return NULL; | |
| 317 } | |
| 318 | |
| 319 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 320 */ | |
| 321 | |
| 322 static operator_ty | |
| 323 get_operator(const node *n) | |
| 324 { | |
| 325 switch (TYPE(n)) { | |
| 326 case VBAR: | |
| 327 return BitOr; | |
| 328 case CIRCUMFLEX: | |
| 329 return BitXor; | |
| 330 case AMPER: | |
| 331 return BitAnd; | |
| 332 case LEFTSHIFT: | |
| 333 return LShift; | |
| 334 case RIGHTSHIFT: | |
| 335 return RShift; | |
| 336 case PLUS: | |
| 337 return Add; | |
| 338 case MINUS: | |
| 339 return Sub; | |
| 340 case STAR: | |
| 341 return Mult; | |
| 342 case SLASH: | |
| 343 return Div; | |
| 344 case DOUBLESLASH: | |
| 345 return FloorDiv; | |
| 346 case PERCENT: | |
| 347 return Mod; | |
| 348 default: | |
|
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349 return (operator_ty)0; |
| 35742 | 350 } |
| 351 } | |
| 352 | |
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353 static const char* FORBIDDEN[] = { |
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354 "None", |
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355 "True", |
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356 "False", |
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357 NULL, |
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358 }; |
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359 |
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360 static int |
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361 forbidden_name(expr_ty e, const node *n) |
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362 { |
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363 const char **p; |
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364 assert(PyUnicode_Check(e->v.Name.id)); |
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365 for (p = FORBIDDEN; *p; p++) { |
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366 if (PyUnicode_CompareWithASCIIString(e->v.Name.id, *p) == 0) { |
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367 ast_error(n, "assignment to keyword"); |
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368 return 1; |
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369 } |
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370 } |
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371 return 0; |
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372 } |
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373 |
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374 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 375 |
| 376 Only sets context for expr kinds that "can appear in assignment context" | |
| 377 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 378 an appropriate syntax error and returns false. | |
| 379 */ | |
| 380 | |
| 381 static int | |
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382 set_context(struct compiling *c, expr_ty e, expr_context_ty ctx, const node *n) |
| 35742 | 383 { |
| 384 asdl_seq *s = NULL; | |
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385 /* If a particular expression type can't be used for assign / delete, |
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386 set expr_name to its name and an error message will be generated. |
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387 */ |
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388 const char* expr_name = NULL; |
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389 |
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390 /* The ast defines augmented store and load contexts, but the |
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391 implementation here doesn't actually use them. The code may be |
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392 a little more complex than necessary as a result. It also means |
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393 that expressions in an augmented assignment have a Store context. |
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394 Consider restructuring so that augmented assignment uses |
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395 set_context(), too. |
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396 */ |
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397 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 398 |
| 399 switch (e->kind) { | |
| 400 case Attribute_kind: | |
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401 e->v.Attribute.ctx = ctx; |
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402 break; |
| 35742 | 403 case Subscript_kind: |
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404 e->v.Subscript.ctx = ctx; |
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405 break; |
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406 case Starred_kind: |
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407 e->v.Starred.ctx = ctx; |
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408 if (!set_context(c, e->v.Starred.value, ctx, n)) |
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409 return 0; |
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410 break; |
| 35742 | 411 case Name_kind: |
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412 if (ctx == Store) { |
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413 if (forbidden_name(e, n)) |
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414 return 0; /* forbidden_name() calls ast_error() */ |
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415 } |
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416 e->v.Name.ctx = ctx; |
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417 break; |
| 35742 | 418 case List_kind: |
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419 e->v.List.ctx = ctx; |
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420 s = e->v.List.elts; |
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421 break; |
| 35742 | 422 case Tuple_kind: |
| 423 if (asdl_seq_LEN(e->v.Tuple.elts) == 0) | |
| 424 return ast_error(n, "can't assign to ()"); | |
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425 e->v.Tuple.ctx = ctx; |
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426 s = e->v.Tuple.elts; |
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428 case Lambda_kind: |
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429 expr_name = "lambda"; |
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430 break; |
| 35742 | 431 case Call_kind: |
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432 expr_name = "function call"; |
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433 break; |
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434 case BoolOp_kind: |
| 35742 | 435 case BinOp_kind: |
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436 case UnaryOp_kind: |
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437 expr_name = "operator"; |
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438 break; |
| 35742 | 439 case GeneratorExp_kind: |
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440 expr_name = "generator expression"; |
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441 break; |
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442 case Yield_kind: |
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443 expr_name = "yield expression"; |
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445 case ListComp_kind: |
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446 expr_name = "list comprehension"; |
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447 break; |
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448 case SetComp_kind: |
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449 expr_name = "set comprehension"; |
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450 break; |
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451 case DictComp_kind: |
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452 expr_name = "dict comprehension"; |
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454 case Dict_kind: |
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455 case Set_kind: |
| 35742 | 456 case Num_kind: |
| 457 case Str_kind: | |
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458 expr_name = "literal"; |
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459 break; |
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460 case Ellipsis_kind: |
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461 expr_name = "Ellipsis"; |
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462 break; |
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463 case Compare_kind: |
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464 expr_name = "comparison"; |
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465 break; |
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466 case IfExp_kind: |
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467 expr_name = "conditional expression"; |
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468 break; |
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469 default: |
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470 PyErr_Format(PyExc_SystemError, |
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471 "unexpected expression in assignment %d (line %d)", |
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472 e->kind, e->lineno); |
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473 return 0; |
| 35742 | 474 } |
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475 /* Check for error string set by switch */ |
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476 if (expr_name) { |
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477 char buf[300]; |
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478 PyOS_snprintf(buf, sizeof(buf), |
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479 "can't %s %s", |
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480 ctx == Store ? "assign to" : "delete", |
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481 expr_name); |
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482 return ast_error(n, buf); |
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483 } |
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484 |
| 35742 | 485 /* If the LHS is a list or tuple, we need to set the assignment |
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486 context for all the contained elements. |
| 35742 | 487 */ |
| 488 if (s) { | |
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489 int i; |
| 35742 | 490 |
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491 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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492 if (!set_context(c, (expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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493 return 0; |
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494 } |
| 35742 | 495 } |
| 496 return 1; | |
| 497 } | |
| 498 | |
| 499 static operator_ty | |
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500 ast_for_augassign(struct compiling *c, const node *n) |
| 35742 | 501 { |
| 502 REQ(n, augassign); | |
| 503 n = CHILD(n, 0); | |
| 504 switch (STR(n)[0]) { | |
| 505 case '+': | |
| 506 return Add; | |
| 507 case '-': | |
| 508 return Sub; | |
| 509 case '/': | |
| 510 if (STR(n)[1] == '/') | |
| 511 return FloorDiv; | |
| 512 else | |
| 513 return Div; | |
| 514 case '%': | |
| 515 return Mod; | |
| 516 case '<': | |
| 517 return LShift; | |
| 518 case '>': | |
| 519 return RShift; | |
| 520 case '&': | |
| 521 return BitAnd; | |
| 522 case '^': | |
| 523 return BitXor; | |
| 524 case '|': | |
| 525 return BitOr; | |
| 526 case '*': | |
| 527 if (STR(n)[1] == '*') | |
| 528 return Pow; | |
| 529 else | |
| 530 return Mult; | |
| 531 default: | |
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532 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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533 return (operator_ty)0; |
| 35742 | 534 } |
| 535 } | |
| 536 | |
| 537 static cmpop_ty | |
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538 ast_for_comp_op(struct compiling *c, const node *n) |
| 35742 | 539 { |
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540 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 541 |'is' 'not' |
| 542 */ | |
| 543 REQ(n, comp_op); | |
| 544 if (NCH(n) == 1) { | |
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545 n = CHILD(n, 0); |
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546 switch (TYPE(n)) { |
| 35742 | 547 case LESS: |
| 548 return Lt; | |
| 549 case GREATER: | |
| 550 return Gt; | |
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551 case EQEQUAL: /* == */ |
| 35742 | 552 return Eq; |
| 553 case LESSEQUAL: | |
| 554 return LtE; | |
| 555 case GREATEREQUAL: | |
| 556 return GtE; | |
| 557 case NOTEQUAL: | |
| 558 return NotEq; | |
| 559 case NAME: | |
| 560 if (strcmp(STR(n), "in") == 0) | |
| 561 return In; | |
| 562 if (strcmp(STR(n), "is") == 0) | |
| 563 return Is; | |
| 564 default: | |
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565 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 566 STR(n)); |
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567 return (cmpop_ty)0; |
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568 } |
| 35742 | 569 } |
| 570 else if (NCH(n) == 2) { | |
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571 /* handle "not in" and "is not" */ |
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572 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 573 case NAME: |
| 574 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 575 return NotIn; | |
| 576 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 577 return IsNot; | |
| 578 default: | |
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579 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 580 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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581 return (cmpop_ty)0; |
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582 } |
| 35742 | 583 } |
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584 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 585 NCH(n)); |
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586 return (cmpop_ty)0; |
| 35742 | 587 } |
| 588 | |
| 589 static asdl_seq * | |
| 590 seq_for_testlist(struct compiling *c, const node *n) | |
| 591 { | |
| 592 /* testlist: test (',' test)* [','] */ | |
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593 asdl_seq *seq; |
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594 expr_ty expression; |
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595 int i; |
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596 assert(TYPE(n) == testlist || TYPE(n) == testlist_comp); |
| 35742 | 597 |
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598 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 599 if (!seq) |
| 600 return NULL; | |
| 601 | |
| 602 for (i = 0; i < NCH(n); i += 2) { | |
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603 assert(TYPE(CHILD(n, i)) == test || TYPE(CHILD(n, i)) == test_nocond); |
| 35742 | 604 |
| 605 expression = ast_for_expr(c, CHILD(n, i)); | |
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606 if (!expression) |
| 35742 | 607 return NULL; |
| 608 | |
| 609 assert(i / 2 < seq->size); | |
| 610 asdl_seq_SET(seq, i / 2, expression); | |
| 611 } | |
| 612 return seq; | |
| 613 } | |
| 614 | |
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615 static arg_ty |
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616 compiler_arg(struct compiling *c, const node *n) |
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617 { |
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618 identifier name; |
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619 expr_ty annotation = NULL; |
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620 node *ch; |
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621 |
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622 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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623 ch = CHILD(n, 0); |
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624 name = NEW_IDENTIFIER(ch); |
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625 if (!name) |
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626 return NULL; |
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627 |
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628 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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629 annotation = ast_for_expr(c, CHILD(n, 2)); |
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630 if (!annotation) |
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631 return NULL; |
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632 } |
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633 |
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634 return arg(name, annotation, c->c_arena); |
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635 #if 0 |
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636 result = Tuple(args, Store, LINENO(n), n->n_col_offset, c->c_arena); |
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637 if (!set_context(c, result, Store, n)) |
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638 return NULL; |
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639 return result; |
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640 #endif |
| 35742 | 641 } |
| 642 | |
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643 /* returns -1 if failed to handle keyword only arguments |
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644 returns new position to keep processing if successful |
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645 (',' tfpdef ['=' test])* |
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646 ^^^ |
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647 start pointing here |
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648 */ |
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649 static int |
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650 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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651 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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652 { |
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653 node *ch; |
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654 expr_ty expression, annotation; |
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655 arg_ty arg; |
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656 int i = start; |
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657 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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658 |
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659 if (kwonlyargs == NULL) { |
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660 ast_error(CHILD(n, start), "named arguments must follow bare *"); |
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661 return -1; |
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662 } |
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663 assert(kwdefaults != NULL); |
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664 while (i < NCH(n)) { |
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665 ch = CHILD(n, i); |
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666 switch (TYPE(ch)) { |
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667 case vfpdef: |
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668 case tfpdef: |
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669 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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670 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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671 asdl_seq_SET(kwdefaults, j, expression); |
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672 i += 2; /* '=' and test */ |
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673 } |
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674 else { /* setting NULL if no default value exists */ |
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675 asdl_seq_SET(kwdefaults, j, NULL); |
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676 } |
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677 if (NCH(ch) == 3) { |
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678 /* ch is NAME ':' test */ |
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679 annotation = ast_for_expr(c, CHILD(ch, 2)); |
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680 if (!annotation) { |
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681 ast_error(ch, "expected expression"); |
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682 goto error; |
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683 } |
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684 } |
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685 else { |
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686 annotation = NULL; |
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687 } |
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688 ch = CHILD(ch, 0); |
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689 arg = arg(NEW_IDENTIFIER(ch), annotation, c->c_arena); |
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690 if (!arg) { |
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691 ast_error(ch, "expecting name"); |
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692 goto error; |
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693 } |
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694 asdl_seq_SET(kwonlyargs, j++, arg); |
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695 i += 2; /* the name and the comma */ |
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696 break; |
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697 case DOUBLESTAR: |
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698 return i; |
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699 default: |
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700 ast_error(ch, "unexpected node"); |
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701 goto error; |
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702 } |
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703 } |
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704 return i; |
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705 error: |
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706 return -1; |
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707 } |
| 35742 | 708 |
|
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709 /* Create AST for argument list. */ |
| 35742 | 710 |
| 711 static arguments_ty | |
| 712 ast_for_arguments(struct compiling *c, const node *n) | |
| 713 { | |
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714 /* This function handles both typedargslist (function definition) |
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715 and varargslist (lambda definition). |
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716 |
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717 parameters: '(' [typedargslist] ')' |
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718 typedargslist: ((tfpdef ['=' test] ',')* |
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719 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
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720 | '**' tfpdef) |
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Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
721 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
722 tfpdef: NAME [':' test] |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
723 varargslist: ((vfpdef ['=' test] ',')* |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
724 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
725 | '**' vfpdef) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
726 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
727 vfpdef: NAME |
| 35742 | 728 */ |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
729 int i, j, k, nposargs = 0, nkwonlyargs = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
730 int nposdefaults = 0, found_default = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
731 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 732 identifier vararg = NULL, kwarg = NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
733 arg_ty arg; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
734 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 735 node *ch; |
| 736 | |
| 737 if (TYPE(n) == parameters) { | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
738 if (NCH(n) == 2) /* () as argument list */ |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
739 return arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
740 NULL, c->c_arena); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
741 n = CHILD(n, 1); |
| 35742 | 742 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
743 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 744 |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
745 /* first count the number of positional args & defaults */ |
| 35742 | 746 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
|
747 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
748 if (TYPE(ch) == STAR) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
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parents:
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diff
changeset
|
749 /* skip star and possible argument */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
750 i++; |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
751 i += (TYPE(CHILD(n, i)) == tfpdef |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
752 || TYPE(CHILD(n, i)) == vfpdef); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
753 break; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
754 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
755 if (TYPE(ch) == DOUBLESTAR) break; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
756 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
|
757 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
758 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
759 /* count the number of keyword only args & |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
760 defaults for keyword only args */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
761 for ( ; i < NCH(n); ++i) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
762 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
763 if (TYPE(ch) == DOUBLESTAR) break; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
764 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 765 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
766 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
|
767 if (!posargs && nposargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
768 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
769 kwonlyargs = (nkwonlyargs ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
770 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
|
771 if (!kwonlyargs && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
772 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
773 posdefaults = (nposdefaults ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
774 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
|
775 if (!posdefaults && nposdefaults) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
776 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
777 /* 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
|
778 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
|
779 - 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
|
780 kwdefaults = (nkwonlyargs ? |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
781 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
|
782 if (!kwdefaults && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
783 goto error; |
|
40215
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 if (nposargs + nkwonlyargs > 255) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
786 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
|
787 return NULL; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
788 } |
| 35742 | 789 |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
790 /* tfpdef: NAME [':' test] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
791 vfpdef: NAME |
| 35742 | 792 */ |
| 793 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
794 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
|
795 k = 0; /* index for args */ |
| 35742 | 796 while (i < NCH(n)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
797 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
798 switch (TYPE(ch)) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
799 case tfpdef: |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
800 case vfpdef: |
| 35742 | 801 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 802 anything other than EQUAL or a comma? */ | |
| 803 /* XXX Should NCH(n) check be made a separate check? */ | |
| 804 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
|
805 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
|
806 if (!expression) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
807 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
808 assert(posdefaults != NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
809 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 810 i += 2; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
811 found_default = 1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
812 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
813 else if (found_default) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
814 ast_error(n, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
815 "non-default argument follows default argument"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
816 goto error; |
| 35742 | 817 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
818 arg = compiler_arg(c, ch); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
819 if (!arg) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
820 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
821 asdl_seq_SET(posargs, k++, arg); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
822 |
| 35742 | 823 i += 2; /* the name and the comma */ |
| 824 break; | |
| 825 case STAR: | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
826 if (i+1 >= NCH(n)) { |
|
44246
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
827 ast_error(CHILD(n, i), |
|
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
828 "named arguments must follow bare *"); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
829 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
830 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
831 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
|
832 if (TYPE(ch) == COMMA) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
833 int res = 0; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
834 i += 2; /* now follows keyword only arguments */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
835 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
836 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
837 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
838 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
|
839 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
840 else { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
841 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
842 if (NCH(ch) > 1) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
843 /* 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
|
844 varargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
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parents:
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diff
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|
845 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
846 i += 3; |
|
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|
847 if (i < NCH(n) && (TYPE(CHILD(n, i)) == tfpdef |
|
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diff
changeset
|
848 || TYPE(CHILD(n, i)) == vfpdef)) { |
|
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Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
849 int res = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
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parents:
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diff
changeset
|
850 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
851 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
852 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
853 i = res; /* res has new position to process */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
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|
854 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
855 } |
| 35742 | 856 break; |
| 857 case DOUBLESTAR: | |
|
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|
858 ch = CHILD(n, i+1); /* tfpdef */ |
|
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|
859 assert(TYPE(ch) == tfpdef || TYPE(ch) == vfpdef); |
|
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parents:
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diff
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|
860 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
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parents:
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|
861 if (NCH(ch) > 1) { |
|
54cd47788811
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parents:
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diff
changeset
|
862 /* there is an annotation on the kwarg */ |
|
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|
863 kwargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
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diff
changeset
|
864 } |
| 35742 | 865 i += 3; |
| 866 break; | |
| 867 default: | |
|
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f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
868 PyErr_Format(PyExc_SystemError, |
| 35742 | 869 "unexpected node in varargslist: %d @ %d", |
| 870 TYPE(ch), i); | |
| 871 goto error; | |
|
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Guido van Rossum <guido@python.org>
parents:
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|
872 } |
| 35742 | 873 } |
|
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|
874 return arguments(posargs, vararg, varargannotation, kwonlyargs, kwarg, |
|
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diff
changeset
|
875 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 876 error: |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
877 Py_XDECREF(vararg); |
|
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
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parents:
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changeset
|
878 Py_XDECREF(kwarg); |
| 35742 | 879 return NULL; |
| 880 } | |
| 881 | |
| 882 static expr_ty | |
| 883 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 884 { | |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
885 expr_ty e; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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|
886 identifier id; |
|
36786
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Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
887 int lineno, col_offset; |
| 35742 | 888 int i; |
| 889 | |
| 890 REQ(n, dotted_name); | |
|
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diff
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|
891 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
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parents:
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diff
changeset
|
892 lineno = LINENO(n); |
|
57322cb2ca11
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diff
changeset
|
893 col_offset = n->n_col_offset; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
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diff
changeset
|
894 |
| 35742 | 895 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 896 if (!id) | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
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parents:
36001
diff
changeset
|
897 return NULL; |
|
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Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
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diff
changeset
|
898 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 899 if (!e) |
|
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cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
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diff
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|
900 return NULL; |
| 35742 | 901 |
| 902 for (i = 2; i < NCH(n); i+=2) { | |
| 903 id = NEW_IDENTIFIER(CHILD(n, i)); | |
|
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|
904 if (!id) |
|
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Four months of trunk changes (including a few releases...)
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parents:
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|
905 return NULL; |
|
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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|
906 e = Attribute(e, id, Load, lineno, col_offset, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
907 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
908 return NULL; |
| 35742 | 909 } |
| 910 | |
| 911 return e; | |
| 912 } | |
| 913 | |
| 914 static expr_ty | |
| 915 ast_for_decorator(struct compiling *c, const node *n) | |
| 916 { | |
| 917 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 918 expr_ty d = NULL; | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
919 expr_ty name_expr; |
| 35742 | 920 |
| 921 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
922 REQ(CHILD(n, 0), AT); |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
923 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 924 |
| 925 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 926 if (!name_expr) | |
|
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|
927 return NULL; |
|
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Four months of trunk changes (including a few releases...)
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|
928 |
| 35742 | 929 if (NCH(n) == 3) { /* No arguments */ |
|
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Four months of trunk changes (including a few releases...)
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parents:
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|
930 d = name_expr; |
|
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diff
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|
931 name_expr = NULL; |
| 35742 | 932 } |
| 933 else if (NCH(n) == 5) { /* Call with no arguments */ | |
|
40450
cc992d75d5b3
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parents:
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|
934 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:
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diff
changeset
|
935 n->n_col_offset, c->c_arena); |
|
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Four months of trunk changes (including a few releases...)
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|
936 if (!d) |
|
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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|
937 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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changeset
|
938 name_expr = NULL; |
| 35742 | 939 } |
| 940 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
941 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>
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|
942 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
943 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
944 name_expr = NULL; |
| 35742 | 945 } |
| 946 | |
| 947 return d; | |
| 948 } | |
| 949 | |
| 950 static asdl_seq* | |
| 951 ast_for_decorators(struct compiling *c, const node *n) | |
| 952 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
953 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:
35870
diff
changeset
|
954 expr_ty d; |
| 35742 | 955 int i; |
| 956 | |
| 957 REQ(n, decorators); | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
958 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 959 if (!decorator_seq) |
| 960 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
961 |
| 35742 | 962 for (i = 0; i < NCH(n); i++) { |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
963 d = ast_for_decorator(c, CHILD(n, i)); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
964 if (!d) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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diff
changeset
|
965 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
966 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 967 } |
| 968 return decorator_seq; | |
| 969 } | |
| 970 | |
| 971 static stmt_ty | |
|
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|
972 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 973 { |
|
41824
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parents:
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changeset
|
974 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
975 identifier name; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
976 arguments_ty args; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
977 asdl_seq *body; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
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parents:
40450
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changeset
|
978 expr_ty returns = NULL; |
|
41824
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changeset
|
979 int name_i = 1; |
| 35742 | 980 |
| 981 REQ(n, funcdef); | |
| 982 | |
| 983 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 984 if (!name) | |
|
40450
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Thomas Wouters <thomas@python.org>
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diff
changeset
|
985 return NULL; |
| 35742 | 986 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 987 if (!args) | |
|
40450
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Four months of trunk changes (including a few releases...)
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|
988 return NULL; |
|
40529
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PEP 3107 - Function Annotations thanks to Tony Lownds
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parents:
40450
diff
changeset
|
989 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
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parents:
40450
diff
changeset
|
990 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
|
54cd47788811
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parents:
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diff
changeset
|
991 if (!returns) |
|
54cd47788811
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parents:
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diff
changeset
|
992 return NULL; |
|
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parents:
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diff
changeset
|
993 name_i += 2; |
|
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parents:
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diff
changeset
|
994 } |
| 35742 | 995 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 996 if (!body) | |
|
40450
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|
997 return NULL; |
| 35742 | 998 |
|
40529
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parents:
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diff
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|
999 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
1000 n->n_col_offset, c->c_arena); |
| 35742 | 1001 } |
| 1002 | |
|
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|
1003 static stmt_ty |
|
24b60622b944
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|
1004 ast_for_decorated(struct compiling *c, const node *n) |
|
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|
1005 { |
|
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|
1006 /* decorated: decorators (classdef | funcdef) */ |
|
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|
1007 stmt_ty thing = NULL; |
|
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|
1008 asdl_seq *decorator_seq = NULL; |
|
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changeset
|
1009 |
|
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parents:
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changeset
|
1010 REQ(n, decorated); |
|
24b60622b944
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diff
changeset
|
1011 |
|
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changeset
|
1012 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
|
24b60622b944
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changeset
|
1013 if (!decorator_seq) |
|
24b60622b944
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changeset
|
1014 return NULL; |
|
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|
1015 |
|
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1016 assert(TYPE(CHILD(n, 1)) == funcdef || |
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1017 TYPE(CHILD(n, 1)) == classdef); |
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1018 |
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1019 if (TYPE(CHILD(n, 1)) == funcdef) { |
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1020 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
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1021 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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1022 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
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1023 } |
|
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1024 /* we count the decorators in when talking about the class' or |
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1025 * function's line number */ |
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1026 if (thing) { |
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1027 thing->lineno = LINENO(n); |
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1028 thing->col_offset = n->n_col_offset; |
|
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1029 } |
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1030 return thing; |
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1031 } |
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1032 |
| 35742 | 1033 static expr_ty |
| 1034 ast_for_lambdef(struct compiling *c, const node *n) | |
| 1035 { | |
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1036 /* lambdef: 'lambda' [varargslist] ':' test |
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1037 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1038 arguments_ty args; |
| 1039 expr_ty expression; | |
| 1040 | |
| 1041 if (NCH(n) == 3) { | |
|
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1042 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
|
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1043 NULL, c->c_arena); |
| 35742 | 1044 if (!args) |
| 1045 return NULL; | |
| 1046 expression = ast_for_expr(c, CHILD(n, 2)); | |
|
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1047 if (!expression) |
| 35742 | 1048 return NULL; |
| 1049 } | |
| 1050 else { | |
| 1051 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1052 if (!args) | |
| 1053 return NULL; | |
| 1054 expression = ast_for_expr(c, CHILD(n, 3)); | |
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1055 if (!expression) |
| 35742 | 1056 return NULL; |
| 1057 } | |
| 1058 | |
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1059 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1060 } |
| 1061 | |
|
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1062 static expr_ty |
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1063 ast_for_ifexpr(struct compiling *c, const node *n) |
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1064 { |
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1065 /* test: or_test 'if' or_test 'else' test */ |
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1066 expr_ty expression, body, orelse; |
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1067 |
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1068 assert(NCH(n) == 5); |
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1069 body = ast_for_expr(c, CHILD(n, 0)); |
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1070 if (!body) |
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1071 return NULL; |
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1072 expression = ast_for_expr(c, CHILD(n, 2)); |
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1073 if (!expression) |
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1074 return NULL; |
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1075 orelse = ast_for_expr(c, CHILD(n, 4)); |
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1076 if (!orelse) |
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1077 return NULL; |
|
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1078 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
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1079 c->c_arena); |
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1080 } |
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1081 |
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1082 /* |
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1083 Count the number of 'for' loops in a comprehension. |
| 35742 | 1084 |
|
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1085 Helper for ast_for_comprehension(). |
| 35742 | 1086 */ |
| 1087 | |
| 1088 static int | |
|
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1089 count_comp_fors(struct compiling *c, const node *n) |
| 35742 | 1090 { |
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1091 int n_fors = 0; |
| 35742 | 1092 |
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1093 count_comp_for: |
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1094 n_fors++; |
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1095 REQ(n, comp_for); |
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1096 if (NCH(n) == 5) |
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1097 n = CHILD(n, 4); |
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1098 else |
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1099 return n_fors; |
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1100 count_comp_iter: |
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1101 REQ(n, comp_iter); |
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1102 n = CHILD(n, 0); |
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1103 if (TYPE(n) == comp_for) |
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1104 goto count_comp_for; |
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1105 else if (TYPE(n) == comp_if) { |
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1106 if (NCH(n) == 3) { |
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1107 n = CHILD(n, 2); |
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1108 goto count_comp_iter; |
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1109 } |
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1110 else |
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1111 return n_fors; |
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1112 } |
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1113 |
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1114 /* Should never be reached */ |
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1115 PyErr_SetString(PyExc_SystemError, |
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1116 "logic error in count_comp_fors"); |
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1117 return -1; |
| 35742 | 1118 } |
| 1119 | |
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1120 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1121 |
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1122 Helper for ast_for_comprehension(). |
| 35742 | 1123 */ |
| 1124 | |
| 1125 static int | |
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1126 count_comp_ifs(struct compiling *c, const node *n) |
| 35742 | 1127 { |
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1128 int n_ifs = 0; |
| 35742 | 1129 |
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1130 while (1) { |
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1131 REQ(n, comp_iter); |
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1132 if (TYPE(CHILD(n, 0)) == comp_for) |
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1133 return n_ifs; |
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1134 n = CHILD(n, 0); |
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1135 REQ(n, comp_if); |
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1136 n_ifs++; |
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1137 if (NCH(n) == 2) |
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1138 return n_ifs; |
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1139 n = CHILD(n, 2); |
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1140 } |
| 35742 | 1141 } |
| 1142 | |
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1143 static asdl_seq * |
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1144 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1145 { |
| 1146 int i, n_fors; | |
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1147 asdl_seq *comps; |
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1148 |
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1149 n_fors = count_comp_fors(c, n); |
| 35742 | 1150 if (n_fors == -1) |
| 1151 return NULL; | |
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1152 |
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1153 comps = asdl_seq_new(n_fors, c->c_arena); |
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1154 if (!comps) |
| 35742 | 1155 return NULL; |
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1156 |
| 35742 | 1157 for (i = 0; i < n_fors; i++) { |
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1158 comprehension_ty comp; |
| 35742 | 1159 asdl_seq *t; |
| 1160 expr_ty expression; | |
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1161 node *for_ch; |
| 35742 | 1162 |
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1163 REQ(n, comp_for); |
| 35742 | 1164 |
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1165 for_ch = CHILD(n, 1); |
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1166 t = ast_for_exprlist(c, for_ch, Store); |
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1167 if (!t) |
| 35742 | 1168 return NULL; |
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1169 expression = ast_for_expr(c, CHILD(n, 3)); |
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1170 if (!expression) |
| 35742 | 1171 return NULL; |
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1172 |
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1173 /* Check the # of children rather than the length of t, since |
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1174 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
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1175 if (NCH(for_ch) == 1) |
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1176 comp = comprehension((expr_ty)asdl_seq_GET(t, 0), expression, |
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1177 NULL, c->c_arena); |
| 35742 | 1178 else |
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1179 comp = comprehension(Tuple(t, Store, LINENO(n), n->n_col_offset, |
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1180 c->c_arena), |
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1181 expression, NULL, c->c_arena); |
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1182 |
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1183 if (!comp) |
| 35742 | 1184 return NULL; |
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1185 |
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1186 if (NCH(n) == 5) { |
| 35742 | 1187 int j, n_ifs; |
| 1188 asdl_seq *ifs; | |
| 1189 | |
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1190 n = CHILD(n, 4); |
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1191 n_ifs = count_comp_ifs(c, n); |
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1192 if (n_ifs == -1) |
| 35742 | 1193 return NULL; |
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1194 |
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1195 ifs = asdl_seq_new(n_ifs, c->c_arena); |
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1196 if (!ifs) |
| 35742 | 1197 return NULL; |
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1198 |
| 35742 | 1199 for (j = 0; j < n_ifs; j++) { |
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1200 REQ(n, comp_iter); |
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1201 n = CHILD(n, 0); |
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1202 REQ(n, comp_if); |
| 35742 | 1203 |
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1204 expression = ast_for_expr(c, CHILD(n, 1)); |
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1205 if (!expression) |
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1206 return NULL; |
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1207 asdl_seq_SET(ifs, j, expression); |
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1208 if (NCH(n) == 3) |
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1209 n = CHILD(n, 2); |
| 35742 | 1210 } |
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1211 /* on exit, must guarantee that n is a comp_for */ |
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1212 if (TYPE(n) == comp_iter) |
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1213 n = CHILD(n, 0); |
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1214 comp->ifs = ifs; |
| 35742 | 1215 } |
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1216 asdl_seq_SET(comps, i, comp); |
| 35742 | 1217 } |
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1218 return comps; |
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1219 } |
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1220 |
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1221 static expr_ty |
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1222 ast_for_itercomp(struct compiling *c, const node *n, int type) |
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1223 { |
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1224 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1225 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1226 expr_ty elt; |
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1227 asdl_seq *comps; |
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1228 |
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1229 assert(NCH(n) > 1); |
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1230 |
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1231 elt = ast_for_expr(c, CHILD(n, 0)); |
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1232 if (!elt) |
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1233 return NULL; |
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1234 |
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1235 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1236 if (!comps) |
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1237 return NULL; |
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1238 |
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1239 if (type == COMP_GENEXP) |
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1240 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1241 else if (type == COMP_LISTCOMP) |
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1242 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1243 else if (type == COMP_SETCOMP) |
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1244 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1245 else |
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1246 /* Should never happen */ |
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1247 return NULL; |
| 35742 | 1248 } |
| 1249 | |
| 1250 static expr_ty | |
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1251 ast_for_dictcomp(struct compiling *c, const node *n) |
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1252 { |
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1253 expr_ty key, value; |
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1254 asdl_seq *comps; |
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1255 |
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1256 assert(NCH(n) > 3); |
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1257 REQ(CHILD(n, 1), COLON); |
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1258 |
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1259 key = ast_for_expr(c, CHILD(n, 0)); |
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1260 if (!key) |
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1261 return NULL; |
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1262 |
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1263 value = ast_for_expr(c, CHILD(n, 2)); |
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1264 if (!value) |
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1265 return NULL; |
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1266 |
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1267 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1268 if (!comps) |
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1269 return NULL; |
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1270 |
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1271 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1272 } |
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1273 |
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1274 static expr_ty |
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1275 ast_for_genexp(struct compiling *c, const node *n) |
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1276 { |
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1277 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1278 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1279 } |
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1280 |
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1281 static expr_ty |
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1282 ast_for_listcomp(struct compiling *c, const node *n) |
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1283 { |
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1284 assert(TYPE(n) == (testlist_comp)); |
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1285 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1286 } |
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1287 |
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1288 static expr_ty |
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1289 ast_for_setcomp(struct compiling *c, const node *n) |
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1290 { |
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1291 assert(TYPE(n) == (dictorsetmaker)); |
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1292 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1293 } |
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1294 |
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1295 |
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1296 static expr_ty |
| 35742 | 1297 ast_for_atom(struct compiling *c, const node *n) |
| 1298 { | |
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1299 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1300 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
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1301 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1302 */ |
| 1303 node *ch = CHILD(n, 0); | |
| 40894 | 1304 int bytesmode = 0; |
| 35742 | 1305 |
| 1306 switch (TYPE(ch)) { | |
| 1307 case NAME: | |
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1308 /* All names start in Load context, but may later be |
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1309 changed. */ |
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1310 return Name(NEW_IDENTIFIER(ch), Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1311 case STRING: { |
| 40894 | 1312 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1313 if (!str) { |
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1314 if (PyErr_ExceptionMatches(PyExc_UnicodeError)) { |
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1315 PyObject *type, *value, *tback, *errstr; |
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1316 PyErr_Fetch(&type, &value, &tback); |
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1317 errstr = ((PyUnicodeErrorObject *)value)->reason; |
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1318 if (errstr) { |
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1319 char *s = ""; |
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1320 char buf[128]; |
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1321 s = PyUnicode_AsString(errstr); |
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1322 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
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1323 ast_error(n, buf); |
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1324 } else { |
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1325 ast_error(n, "(unicode error) unknown error"); |
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1326 } |
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1327 Py_DECREF(type); |
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1328 Py_DECREF(value); |
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1329 Py_XDECREF(tback); |
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1330 } |
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1331 return NULL; |
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1332 } |
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1333 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1334 if (bytesmode) |
| 1335 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1336 else | |
| 1337 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1338 } |
| 1339 case NUMBER: { | |
|
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1340 PyObject *pynum = parsenumber(c, STR(ch)); |
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1341 if (!pynum) |
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1342 return NULL; |
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1343 |
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1344 PyArena_AddPyObject(c->c_arena, pynum); |
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1345 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1346 } |
|
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1347 case ELLIPSIS: /* Ellipsis */ |
|
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1348 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1349 case LPAR: /* some parenthesized expressions */ |
|
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1350 ch = CHILD(n, 1); |
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1351 |
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1352 if (TYPE(ch) == RPAR) |
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1353 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1354 |
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1355 if (TYPE(ch) == yield_expr) |
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1356 return ast_for_expr(c, ch); |
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1357 |
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1358 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
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1359 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
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1360 return ast_for_genexp(c, ch); |
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1361 |
|
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1362 return ast_for_testlist(c, ch); |
| 35742 | 1363 case LSQB: /* list (or list comprehension) */ |
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1364 ch = CHILD(n, 1); |
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1365 |
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1366 if (TYPE(ch) == RSQB) |
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1367 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1368 |
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1369 REQ(ch, testlist_comp); |
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1370 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
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1371 asdl_seq *elts = seq_for_testlist(c, ch); |
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1372 if (!elts) |
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1373 return NULL; |
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1374 |
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1375 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1376 } |
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1377 else |
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1378 return ast_for_listcomp(c, ch); |
| 35742 | 1379 case LBRACE: { |
|
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1380 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
|
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1381 * test (gen_for | (',' test)* [',']) */ |
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1382 int i, size; |
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1383 asdl_seq *keys, *values; |
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1384 |
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1385 ch = CHILD(n, 1); |
|
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1386 if (TYPE(ch) == RBRACE) { |
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1387 /* it's an empty dict */ |
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1388 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1389 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
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1390 /* it's a simple set */ |
|
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1391 asdl_seq *elts; |
|
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SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1392 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
|
41482
a5e410639e24
Make it compile with C89.
Guido van Rossum <guido@python.org>
parents:
41464
diff
changeset
|
1393 elts = asdl_seq_new(size, c->c_arena); |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1394 if (!elts) |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1395 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1396 for (i = 0; i < NCH(ch); i += 2) { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1397 expr_ty expression; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1398 expression = ast_for_expr(c, CHILD(ch, i)); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1399 if (!expression) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1400 return NULL; |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1401 asdl_seq_SET(elts, i / 2, expression); |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1402 } |
|
41464
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1403 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1404 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1405 /* it's a set comprehension */ |
|
060c79f6d919
Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents:
41235
diff
changeset
|
1406 return ast_for_setcomp(c, ch); |
|
42193
090588a17490
Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
42084
diff
changeset
|
1407 } else if (NCH(ch) > 3 && TYPE(CHILD(ch, 3)) == comp_for) { |
|
090588a17490
Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
42084
diff
changeset
|
1408 return ast_for_dictcomp(c, ch); |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1409 } else { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1410 /* it's a dict */ |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1411 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1412 keys = asdl_seq_new(size, c->c_arena); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1413 if (!keys) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1414 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1415 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1416 values = asdl_seq_new(size, c->c_arena); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1417 if (!values) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1418 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1419 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1420 for (i = 0; i < NCH(ch); i += 4) { |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1421 expr_ty expression; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1422 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1423 expression = ast_for_expr(c, CHILD(ch, i)); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1424 if (!expression) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1425 return NULL; |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
1426 |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1427 asdl_seq_SET(keys, i / 4, expression); |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
1428 |
|
39693
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1429 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1430 if (!expression) |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1431 return NULL; |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1432 |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1433 asdl_seq_SET(values, i / 4, expression); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1434 } |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1435 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
Guido van Rossum <guido@python.org>
parents:
39678
diff
changeset
|
1436 } |
| 35742 | 1437 } |
| 1438 default: | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1439 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1440 return NULL; |
| 35742 | 1441 } |
| 1442 } | |
| 1443 | |
| 1444 static slice_ty | |
| 1445 ast_for_slice(struct compiling *c, const node *n) | |
| 1446 { | |
| 1447 node *ch; | |
| 1448 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1449 | |
| 1450 REQ(n, subscript); | |
| 1451 | |
| 1452 /* | |
|
39783
7a0ad110e91e
Patch #1550786: ellipsis literal.
Georg Brandl <georg@python.org>
parents:
39782
diff
changeset
|
1453 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1454 sliceop: ':' [test] |
| 1455 */ | |
| 1456 ch = CHILD(n, 0); | |
| 1457 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1458 /* 'step' variable hold no significance in terms of being used over | |
| 1459 other vars */ | |
| 1460 step = ast_for_expr(c, ch); | |
| 1461 if (!step) | |
| 1462 return NULL; | |
| 1463 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1464 return Index(step, c->c_arena); |
| 35742 | 1465 } |
| 1466 | |
| 1467 if (TYPE(ch) == test) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1468 lower = ast_for_expr(c, ch); |
| 35742 | 1469 if (!lower) |
| 1470 return NULL; | |
| 1471 } | |
| 1472 | |
| 1473 /* If there's an upper bound it's in the second or third position. */ | |
| 1474 if (TYPE(ch) == COLON) { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1475 if (NCH(n) > 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1476 node *n2 = CHILD(n, 1); |
| 35742 | 1477 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1478 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1479 upper = ast_for_expr(c, n2); |
| 35742 | 1480 if (!upper) |
| 1481 return NULL; | |
| 1482 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1483 } |
| 35742 | 1484 } else if (NCH(n) > 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1485 node *n2 = CHILD(n, 2); |
| 35742 | 1486 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1487 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
1488 upper = ast_for_expr(c, n2); |
| 35742 | 1489 if (!upper) |
| 1490 return NULL; | |
| 1491 } | |
| 1492 } | |
| 1493 | |
| 1494 ch = CHILD(n, NCH(n) - 1); | |
| 1495 if (TYPE(ch) == sliceop) { | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1496 if (NCH(ch) == 1) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1497 /* No expression, so step is None */ |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1498 ch = CHILD(ch, 0); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1499 step = Name(new_identifier("None", c->c_arena), Load, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1500 LINENO(ch), ch->n_col_offset, c->c_arena); |
| 35742 | 1501 if (!step) |
| 1502 return NULL; | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1503 } else { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1504 ch = CHILD(ch, 1); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1505 if (TYPE(ch) == test) { |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1506 step = ast_for_expr(c, ch); |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1507 if (!step) |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1508 return NULL; |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
1509 } |
| 35742 | 1510 } |
| 1511 } | |
| 1512 | |
|
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
|
1513 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1514 } |
| 1515 | |
| 1516 static expr_ty | |
| 1517 ast_for_binop(struct compiling *c, const node *n) | |
| 1518 { | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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41509
diff
changeset
|
1519 /* Must account for a sequence of expressions. |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
1520 How should A op B op C by represented? |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
1521 BinOp(BinOp(A, op, B), op, C). |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
1522 */ |
| 35742 | 1523 |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
1524 int i, nops; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
1525 expr_ty expr1, expr2, result; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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changeset
|
1526 operator_ty newoperator; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
1527 |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
1528 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
1529 if (!expr1) |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
1530 return NULL; |
| 35742 | 1531 |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
1532 expr2 = ast_for_expr(c, CHILD(n, 2)); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
1533 if (!expr2) |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
1534 return NULL; |
|
06145fbc7ab9
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diff
changeset
|
1535 |
|
06145fbc7ab9
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diff
changeset
|
1536 newoperator = get_operator(CHILD(n, 1)); |
|
06145fbc7ab9
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changeset
|
1537 if (!newoperator) |
|
06145fbc7ab9
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changeset
|
1538 return NULL; |
| 35742 | 1539 |
|
41554
06145fbc7ab9
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changeset
|
1540 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
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changeset
|
1541 c->c_arena); |
|
06145fbc7ab9
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changeset
|
1542 if (!result) |
|
06145fbc7ab9
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changeset
|
1543 return NULL; |
| 35742 | 1544 |
|
41554
06145fbc7ab9
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changeset
|
1545 nops = (NCH(n) - 1) / 2; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
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diff
changeset
|
1546 for (i = 1; i < nops; i++) { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
1547 expr_ty tmp_result, tmp; |
|
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1548 const node* next_oper = CHILD(n, i * 2 + 1); |
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1549 |
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|
1550 newoperator = get_operator(next_oper); |
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1551 if (!newoperator) |
| 35742 | 1552 return NULL; |
| 1553 | |
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1554 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
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1555 if (!tmp) |
| 35742 | 1556 return NULL; |
| 1557 | |
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1558 tmp_result = BinOp(result, newoperator, tmp, |
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1559 LINENO(next_oper), next_oper->n_col_offset, |
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1560 c->c_arena); |
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1561 if (!tmp_result) |
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1562 return NULL; |
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1563 result = tmp_result; |
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1564 } |
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1565 return result; |
| 35742 | 1566 } |
| 1567 | |
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1568 static expr_ty |
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1569 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
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1570 { |
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1571 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
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1572 subscriptlist: subscript (',' subscript)* [','] |
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1573 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
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1574 */ |
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1575 REQ(n, trailer); |
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1576 if (TYPE(CHILD(n, 0)) == LPAR) { |
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1577 if (NCH(n) == 2) |
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1578 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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1579 n->n_col_offset, c->c_arena); |
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1580 else |
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1581 return ast_for_call(c, CHILD(n, 1), left_expr); |
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1582 } |
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1583 else if (TYPE(CHILD(n, 0)) == DOT ) { |
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1584 return Attribute(left_expr, NEW_IDENTIFIER(CHILD(n, 1)), Load, |
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1585 LINENO(n), n->n_col_offset, c->c_arena); |
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1586 } |
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1587 else { |
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1588 REQ(CHILD(n, 0), LSQB); |
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1589 REQ(CHILD(n, 2), RSQB); |
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1590 n = CHILD(n, 1); |
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1591 if (NCH(n) == 1) { |
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1592 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
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1593 if (!slc) |
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1594 return NULL; |
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1595 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
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1596 c->c_arena); |
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1597 } |
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1598 else { |
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1599 /* The grammar is ambiguous here. The ambiguity is resolved |
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1600 by treating the sequence as a tuple literal if there are |
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1601 no slice features. |
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1602 */ |
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1603 int j; |
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1604 slice_ty slc; |
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1605 expr_ty e; |
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1606 int simple = 1; |
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1607 asdl_seq *slices, *elts; |
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1608 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
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1609 if (!slices) |
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1610 return NULL; |
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1611 for (j = 0; j < NCH(n); j += 2) { |
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1612 slc = ast_for_slice(c, CHILD(n, j)); |
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1613 if (!slc) |
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1614 return NULL; |
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1615 if (slc->kind != Index_kind) |
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1616 simple = 0; |
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1617 asdl_seq_SET(slices, j / 2, slc); |
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1618 } |
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1619 if (!simple) { |
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1620 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
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1621 Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1622 } |
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1623 /* extract Index values and put them in a Tuple */ |
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1624 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
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1625 if (!elts) |
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1626 return NULL; |
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1627 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
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1628 slc = (slice_ty)asdl_seq_GET(slices, j); |
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1629 assert(slc->kind == Index_kind && slc->v.Index.value); |
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1630 asdl_seq_SET(elts, j, slc->v.Index.value); |
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1631 } |
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1632 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1633 if (!e) |
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1634 return NULL; |
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1635 return Subscript(left_expr, Index(e, c->c_arena), |
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1636 Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1637 } |
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1638 } |
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1639 } |
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1640 |
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1641 static expr_ty |
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1642 ast_for_factor(struct compiling *c, const node *n) |
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1643 { |
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1644 node *pfactor, *ppower, *patom, *pnum; |
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1645 expr_ty expression; |
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1646 |
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1647 /* If the unary - operator is applied to a constant, don't generate |
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1648 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
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1649 constant. The peephole optimizer already does something like |
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1650 this but it doesn't handle the case where the constant is |
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1651 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
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1652 PyLongObject. |
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1653 */ |
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1654 if (TYPE(CHILD(n, 0)) == MINUS |
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1655 && NCH(n) == 2 |
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1656 && TYPE((pfactor = CHILD(n, 1))) == factor |
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|
1657 && NCH(pfactor) == 1 |
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|
1658 && TYPE((ppower = CHILD(pfactor, 0))) == power |
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|
1659 && NCH(ppower) == 1 |
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|
1660 && TYPE((patom = CHILD(ppower, 0))) == atom |
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1661 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
|
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1662 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
|
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|
1663 if (s == NULL) |
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|
1664 return NULL; |
|
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|
1665 s[0] = '-'; |
|
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|
1666 strcpy(s + 1, STR(pnum)); |
|
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|
1667 PyObject_FREE(STR(pnum)); |
|
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|
1668 STR(pnum) = s; |
|
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|
1669 return ast_for_atom(c, patom); |
|
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|
1670 } |
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|
1671 |
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|
1672 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
1673 if (!expression) |
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|
1674 return NULL; |
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|
1675 |
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|
1676 switch (TYPE(CHILD(n, 0))) { |
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|
1677 case PLUS: |
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1678 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
|
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|
1679 c->c_arena); |
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|
1680 case MINUS: |
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1681 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
|
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1682 c->c_arena); |
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1683 case TILDE: |
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1684 return UnaryOp(Invert, expression, LINENO(n), |
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1685 n->n_col_offset, c->c_arena); |
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1686 } |
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1687 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
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1688 TYPE(CHILD(n, 0))); |
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1689 return NULL; |
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1690 } |
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1691 |
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|
1692 static expr_ty |
|
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1693 ast_for_power(struct compiling *c, const node *n) |
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1694 { |
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1695 /* power: atom trailer* ('**' factor)* |
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1696 */ |
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1697 int i; |
|
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1698 expr_ty e, tmp; |
|
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1699 REQ(n, power); |
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1700 e = ast_for_atom(c, CHILD(n, 0)); |
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1701 if (!e) |
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1702 return NULL; |
|
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1703 if (NCH(n) == 1) |
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1704 return e; |
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1705 for (i = 1; i < NCH(n); i++) { |
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1706 node *ch = CHILD(n, i); |
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1707 if (TYPE(ch) != trailer) |
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1708 break; |
|
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1709 tmp = ast_for_trailer(c, ch, e); |
|
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1710 if (!tmp) |
|
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1711 return NULL; |
|
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1712 tmp->lineno = e->lineno; |
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1713 tmp->col_offset = e->col_offset; |
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1714 e = tmp; |
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1715 } |
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1716 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
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1717 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
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1718 if (!f) |
|
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1719 return NULL; |
|
36786
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|
1720 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1721 if (!tmp) |
|
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|
1722 return NULL; |
|
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|
1723 e = tmp; |
|
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|
1724 } |
|
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|
1725 return e; |
|
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|
1726 } |
|
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|
1727 |
|
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|
1728 static expr_ty |
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1729 ast_for_starred(struct compiling *c, const node *n) |
|
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1730 { |
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1731 expr_ty tmp; |
|
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|
1732 REQ(n, star_expr); |
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1733 |
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1734 tmp = ast_for_expr(c, CHILD(n, 1)); |
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|
1735 if (!tmp) |
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|
1736 return NULL; |
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|
1737 |
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|
1738 /* The Load context is changed later. */ |
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|
1739 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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|
1740 } |
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|
1741 |
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|
1742 |
| 35742 | 1743 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1744 */ | |
| 1745 | |
| 1746 static expr_ty | |
| 1747 ast_for_expr(struct compiling *c, const node *n) | |
| 1748 { | |
| 1749 /* handle the full range of simple expressions | |
|
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|
1750 test: or_test ['if' or_test 'else' test] | lambdef |
|
41464
060c79f6d919
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Nick Coghlan <ncoghlan@gmail.com>
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diff
changeset
|
1751 test_nocond: or_test | lambdef_nocond |
|
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|
1752 or_test: and_test ('or' and_test)* |
| 35742 | 1753 and_test: not_test ('and' not_test)* |
| 1754 not_test: 'not' not_test | comparison | |
| 1755 comparison: expr (comp_op expr)* | |
| 1756 expr: xor_expr ('|' xor_expr)* | |
| 1757 xor_expr: and_expr ('^' and_expr)* | |
| 1758 and_expr: shift_expr ('&' shift_expr)* | |
| 1759 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1760 arith_expr: term (('+'|'-') term)* | |
| 1761 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1762 factor: ('+'|'-'|'~') factor | power | |
| 1763 power: atom trailer* ('**' factor)* | |
| 1764 */ | |
| 1765 | |
| 1766 asdl_seq *seq; | |
| 1767 int i; | |
| 1768 | |
| 1769 loop: | |
| 1770 switch (TYPE(n)) { | |
| 1771 case test: | |
|
41464
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|
1772 case test_nocond: |
|
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|
1773 if (TYPE(CHILD(n, 0)) == lambdef || |
|
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|
1774 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1775 return ast_for_lambdef(c, CHILD(n, 0)); |
|
36666
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|
1776 else if (NCH(n) > 1) |
|
6165927431d6
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|
1777 return ast_for_ifexpr(c, n); |
|
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|
1778 /* Fallthrough */ |
|
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|
1779 case or_test: |
| 35742 | 1780 case and_test: |
| 1781 if (NCH(n) == 1) { | |
| 1782 n = CHILD(n, 0); | |
| 1783 goto loop; | |
| 1784 } | |
|
36065
ea083efdc96c
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changeset
|
1785 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1786 if (!seq) |
| 1787 return NULL; | |
| 1788 for (i = 0; i < NCH(n); i += 2) { | |
| 1789 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1790 if (!e) | |
| 1791 return NULL; | |
| 1792 asdl_seq_SET(seq, i / 2, e); | |
| 1793 } | |
| 1794 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
|
37879
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
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1795 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
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1796 c->c_arena); |
|
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1797 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
|
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1798 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1799 case not_test: |
| 1800 if (NCH(n) == 1) { | |
| 1801 n = CHILD(n, 0); | |
| 1802 goto loop; | |
| 1803 } | |
| 1804 else { | |
| 1805 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1806 if (!expression) | |
| 1807 return NULL; | |
| 1808 | |
|
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1809 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
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1810 c->c_arena); |
| 35742 | 1811 } |
| 1812 case comparison: | |
| 1813 if (NCH(n) == 1) { | |
| 1814 n = CHILD(n, 0); | |
| 1815 goto loop; | |
| 1816 } | |
| 1817 else { | |
| 1818 expr_ty expression; | |
|
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1819 asdl_int_seq *ops; |
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1820 asdl_seq *cmps; |
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1821 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1822 if (!ops) |
| 1823 return NULL; | |
|
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1824 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1825 if (!cmps) { |
| 1826 return NULL; | |
| 1827 } | |
| 1828 for (i = 1; i < NCH(n); i += 2) { | |
|
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1829 cmpop_ty newoperator; |
| 35742 | 1830 |
|
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1831 newoperator = ast_for_comp_op(c, CHILD(n, i)); |
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1832 if (!newoperator) { |
| 35742 | 1833 return NULL; |
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1834 } |
| 35742 | 1835 |
| 1836 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
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1837 if (!expression) { |
| 35742 | 1838 return NULL; |
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1839 } |
| 35742 | 1840 |
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1841 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1842 asdl_seq_SET(cmps, i / 2, expression); |
| 1843 } | |
| 1844 expression = ast_for_expr(c, CHILD(n, 0)); | |
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1845 if (!expression) { |
| 35742 | 1846 return NULL; |
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1847 } |
| 35742 | 1848 |
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1849 return Compare(expression, ops, cmps, LINENO(n), |
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1850 n->n_col_offset, c->c_arena); |
| 35742 | 1851 } |
| 1852 break; | |
| 1853 | |
|
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1854 case star_expr: |
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1855 if (TYPE(CHILD(n, 0)) == STAR) { |
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1856 return ast_for_starred(c, n); |
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1857 } |
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1858 /* Fallthrough */ |
| 35742 | 1859 /* The next five cases all handle BinOps. The main body of code |
| 1860 is the same in each case, but the switch turned inside out to | |
| 1861 reuse the code for each type of operator. | |
| 1862 */ | |
| 1863 case expr: | |
| 1864 case xor_expr: | |
| 1865 case and_expr: | |
| 1866 case shift_expr: | |
| 1867 case arith_expr: | |
| 1868 case term: | |
| 1869 if (NCH(n) == 1) { | |
| 1870 n = CHILD(n, 0); | |
| 1871 goto loop; | |
| 1872 } | |
| 1873 return ast_for_binop(c, n); | |
| 1874 case yield_expr: { | |
|
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1875 expr_ty exp = NULL; |
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1876 if (NCH(n) == 2) { |
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1877 exp = ast_for_testlist(c, CHILD(n, 1)); |
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1878 if (!exp) |
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1879 return NULL; |
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1880 } |
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1881 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
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1882 } |
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1883 case factor: |
| 35742 | 1884 if (NCH(n) == 1) { |
| 1885 n = CHILD(n, 0); | |
| 1886 goto loop; | |
| 1887 } | |
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1888 return ast_for_factor(c, n); |
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1889 case power: |
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1890 return ast_for_power(c, n); |
| 35742 | 1891 default: |
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1892 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1893 return NULL; |
| 1894 } | |
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1895 /* should never get here unless if error is set */ |
| 35742 | 1896 return NULL; |
| 1897 } | |
| 1898 | |
| 1899 static expr_ty | |
| 1900 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1901 { | |
| 1902 /* | |
| 1903 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1904 | '**' test) | |
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1905 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1906 */ |
| 1907 | |
| 1908 int i, nargs, nkeywords, ngens; | |
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1909 asdl_seq *args; |
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1910 asdl_seq *keywords; |
| 35742 | 1911 expr_ty vararg = NULL, kwarg = NULL; |
| 1912 | |
| 1913 REQ(n, arglist); | |
| 1914 | |
| 1915 nargs = 0; | |
| 1916 nkeywords = 0; | |
| 1917 ngens = 0; | |
| 1918 for (i = 0; i < NCH(n); i++) { | |
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1919 node *ch = CHILD(n, i); |
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1920 if (TYPE(ch) == argument) { |
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1921 if (NCH(ch) == 1) |
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1922 nargs++; |
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1923 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1924 ngens++; |
| 35742 | 1925 else |
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1926 nkeywords++; |
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1927 } |
| 35742 | 1928 } |
| 1929 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
|
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1930 ast_error(n, "Generator expression must be parenthesized " |
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1931 "if not sole argument"); |
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1932 return NULL; |
| 35742 | 1933 } |
| 1934 | |
| 1935 if (nargs + nkeywords + ngens > 255) { | |
| 1936 ast_error(n, "more than 255 arguments"); | |
| 1937 return NULL; | |
| 1938 } | |
| 1939 | |
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1940 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1941 if (!args) |
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1942 return NULL; |
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1943 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1944 if (!keywords) |
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1945 return NULL; |
| 35742 | 1946 nargs = 0; |
| 1947 nkeywords = 0; | |
| 1948 for (i = 0; i < NCH(n); i++) { | |
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1949 node *ch = CHILD(n, i); |
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1950 if (TYPE(ch) == argument) { |
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1951 expr_ty e; |
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1952 if (NCH(ch) == 1) { |
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1953 if (nkeywords) { |
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1954 ast_error(CHILD(ch, 0), |
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1955 "non-keyword arg after keyword arg"); |
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1956 return NULL; |
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1957 } |
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1958 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1959 if (!e) |
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1960 return NULL; |
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1961 asdl_seq_SET(args, nargs++, e); |
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1962 } |
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1963 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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1964 e = ast_for_genexp(c, ch); |
| 35742 | 1965 if (!e) |
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1966 return NULL; |
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1967 asdl_seq_SET(args, nargs++, e); |
| 35742 | 1968 } |
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1969 else { |
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1970 keyword_ty kw; |
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1971 identifier key; |
| 35742 | 1972 |
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1973 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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1974 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1975 if (!e) |
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1976 return NULL; |
| 35742 | 1977 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1978 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 1979 * SF bug 132313 points out that complaining about a keyword | |
| 1980 * then is very confusing. | |
| 1981 */ | |
| 1982 if (e->kind == Lambda_kind) { | |
| 1983 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
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1984 return NULL; |
| 35742 | 1985 } else if (e->kind != Name_kind) { |
| 1986 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
|
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1987 return NULL; |
|
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1988 } else if (forbidden_name(e, ch)) { |
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1989 return NULL; |
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1990 } |
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1991 key = e->v.Name.id; |
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1992 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 1993 if (!e) |
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1994 return NULL; |
|
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1995 kw = keyword(key, e, c->c_arena); |
| 35742 | 1996 if (!kw) |
|
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1997 return NULL; |
|
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1998 asdl_seq_SET(keywords, nkeywords++, kw); |
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1999 } |
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2000 } |
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2001 else if (TYPE(ch) == STAR) { |
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2002 vararg = ast_for_expr(c, CHILD(n, i+1)); |
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2003 if (!vararg) |
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2004 return NULL; |
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2005 i++; |
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2006 } |
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2007 else if (TYPE(ch) == DOUBLESTAR) { |
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2008 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
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2009 if (!kwarg) |
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2010 return NULL; |
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2011 i++; |
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2012 } |
| 35742 | 2013 } |
| 2014 | |
|
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2015 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 2016 } |
| 2017 | |
| 2018 static expr_ty | |
|
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2019 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 2020 { |
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2021 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
|
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2022 /* testlist: test (',' test)* [','] */ |
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2023 /* testlist1: test (',' test)* */ |
| 35742 | 2024 assert(NCH(n) > 0); |
|
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2025 if (TYPE(n) == testlist_comp) { |
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2026 if (NCH(n) > 1) |
|
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2027 assert(TYPE(CHILD(n, 1)) != comp_for); |
|
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2028 } |
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2029 else { |
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2030 assert(TYPE(n) == testlist || |
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2031 TYPE(n) == testlist1); |
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2032 } |
| 35742 | 2033 if (NCH(n) == 1) |
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2034 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 2035 else { |
| 2036 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 2037 if (!tmp) | |
| 2038 return NULL; | |
|
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2039 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2040 } |
|
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2041 } |
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|
2042 |
| 35742 | 2043 static stmt_ty |
| 2044 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2045 { | |
| 2046 REQ(n, expr_stmt); | |
| 2047 /* expr_stmt: testlist (augassign (yield_expr|testlist) | |
| 2048 | ('=' (yield_expr|testlist))*) | |
| 2049 testlist: test (',' test)* [','] | |
| 2050 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | |
|
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2051 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2052 test: ... here starts the operator precendence dance |
| 2053 */ | |
| 2054 | |
| 2055 if (NCH(n) == 1) { | |
|
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2056 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2057 if (!e) |
| 2058 return NULL; | |
| 2059 | |
|
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2060 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2061 } |
| 2062 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2063 expr_ty expr1, expr2; | |
|
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2064 operator_ty newoperator; |
|
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2065 node *ch = CHILD(n, 0); |
| 35742 | 2066 |
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2067 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2068 if (!expr1) |
| 2069 return NULL; | |
|
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2070 /* TODO(nas): Remove duplicated error checks (set_context does it) */ |
|
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2071 switch (expr1->kind) { |
|
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2072 case GeneratorExp_kind: |
|
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|
2073 ast_error(ch, "augmented assignment to generator " |
|
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Improved handling of syntax errors.
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|
2074 "expression not possible"); |
|
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|
2075 return NULL; |
|
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|
2076 case Yield_kind: |
|
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|
2077 ast_error(ch, "augmented assignment to yield " |
|
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|
2078 "expression not possible"); |
|
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|
2079 return NULL; |
|
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|
2080 case Name_kind: { |
|
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2081 if (forbidden_name(expr1, ch)) |
|
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|
2082 return NULL; |
|
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|
2083 break; |
|
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|
2084 } |
|
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|
2085 case Attribute_kind: |
|
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|
2086 case Subscript_kind: |
|
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|
2087 break; |
|
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|
2088 default: |
|
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|
2089 ast_error(ch, "illegal expression for augmented " |
|
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|
2090 "assignment"); |
|
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|
2091 return NULL; |
| 35742 | 2092 } |
|
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2093 if(!set_context(c, expr1, Store, ch)) |
|
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2094 return NULL; |
| 35742 | 2095 |
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2096 ch = CHILD(n, 2); |
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2097 if (TYPE(ch) == testlist) |
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2098 expr2 = ast_for_testlist(c, ch); |
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|
2099 else |
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2100 expr2 = ast_for_expr(c, ch); |
|
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|
2101 if (!expr2) |
| 35742 | 2102 return NULL; |
| 2103 | |
|
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|
2104 newoperator = ast_for_augassign(c, CHILD(n, 1)); |
|
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2105 if (!newoperator) |
| 35742 | 2106 return NULL; |
| 2107 | |
|
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|
2108 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2109 } |
| 2110 else { | |
|
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|
2111 int i; |
|
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|
2112 asdl_seq *targets; |
|
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|
2113 node *value; |
| 35742 | 2114 expr_ty expression; |
| 2115 | |
|
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|
2116 /* a normal assignment */ |
|
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|
2117 REQ(CHILD(n, 1), EQUAL); |
|
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|
2118 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
|
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|
2119 if (!targets) |
|
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|
2120 return NULL; |
|
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|
2121 for (i = 0; i < NCH(n) - 2; i += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2122 expr_ty e; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2123 node *ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2124 if (TYPE(ch) == yield_expr) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2125 ast_error(ch, "assignment to yield expression not possible"); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2126 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2127 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2128 e = ast_for_testlist(c, ch); |
| 35742 | 2129 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2130 /* set context to assign */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2131 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2132 return NULL; |
| 35742 | 2133 |
|
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
|
2134 if (!set_context(c, e, Store, CHILD(n, i))) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2135 return NULL; |
| 35742 | 2136 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2137 asdl_seq_SET(targets, i / 2, e); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2138 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2139 value = CHILD(n, NCH(n) - 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2140 if (TYPE(value) == testlist) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2141 expression = ast_for_testlist(c, value); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2142 else |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2143 expression = ast_for_expr(c, value); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2144 if (!expression) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2145 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2146 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2147 } |
| 2148 } | |
| 2149 | |
| 2150 static asdl_seq * | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2151 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2152 { |
| 2153 asdl_seq *seq; | |
| 2154 int i; | |
| 2155 expr_ty e; | |
| 2156 | |
| 2157 REQ(n, exprlist); | |
| 2158 | |
|
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
|
2159 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2160 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2161 return NULL; |
| 35742 | 2162 for (i = 0; i < NCH(n); i += 2) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2163 e = ast_for_expr(c, CHILD(n, i)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2164 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2165 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2166 asdl_seq_SET(seq, i / 2, e); |
|
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
|
2167 if (context && !set_context(c, e, context, CHILD(n, i))) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2168 return NULL; |
| 35742 | 2169 } |
| 2170 return seq; | |
| 2171 } | |
| 2172 | |
| 2173 static stmt_ty | |
| 2174 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2175 { | |
| 2176 asdl_seq *expr_list; | |
| 2177 | |
| 2178 /* del_stmt: 'del' exprlist */ | |
| 2179 REQ(n, del_stmt); | |
| 2180 | |
| 2181 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2182 if (!expr_list) | |
| 2183 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2184 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2185 } |
| 2186 | |
| 2187 static stmt_ty | |
| 2188 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2189 { | |
| 2190 /* | |
| 2191 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2192 | yield_stmt | |
| 2193 break_stmt: 'break' | |
| 2194 continue_stmt: 'continue' | |
| 2195 return_stmt: 'return' [testlist] | |
| 2196 yield_stmt: yield_expr | |
| 2197 yield_expr: 'yield' testlist | |
| 2198 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2199 */ | |
| 2200 node *ch; | |
| 2201 | |
| 2202 REQ(n, flow_stmt); | |
| 2203 ch = CHILD(n, 0); | |
| 2204 switch (TYPE(ch)) { | |
| 2205 case break_stmt: | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2206 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2207 case continue_stmt: |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2208 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2209 case yield_stmt: { /* will reduce to yield_expr */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2210 expr_ty exp = ast_for_expr(c, CHILD(ch, 0)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2211 if (!exp) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2212 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2213 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2214 } |
| 2215 case return_stmt: | |
| 2216 if (NCH(ch) == 1) | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2217 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2218 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2219 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2220 if (!expression) |
| 2221 return NULL; | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2222 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2223 } |
| 2224 case raise_stmt: | |
| 2225 if (NCH(ch) == 1) | |
|
43102
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2226 return Raise(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2227 else if (NCH(ch) >= 2) { |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2228 expr_ty cause = NULL; |
| 35742 | 2229 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); |
| 2230 if (!expression) | |
| 2231 return NULL; | |
|
43102
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2232 if (NCH(ch) == 4) { |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2233 cause = ast_for_expr(c, CHILD(ch, 3)); |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2234 if (!cause) |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2235 return NULL; |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2236 } |
|
981ecc526703
Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2237 return Raise(expression, cause, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2238 } |
| 2239 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2240 PyErr_Format(PyExc_SystemError, |
| 35742 | 2241 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2242 return NULL; | |
| 2243 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2244 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2245 PyErr_SetString(PyExc_SystemError, "unhandled flow statement"); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2246 return NULL; |
| 35742 | 2247 } |
| 2248 | |
| 2249 static alias_ty | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2250 alias_for_import_name(struct compiling *c, const node *n) |
| 35742 | 2251 { |
| 2252 /* | |
|
36742
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
36718
diff
changeset
|
2253 import_as_name: NAME ['as' NAME] |
|
658f8ff2a442
Make 'as' an actual keyword when with's future statement is used. Not
Thomas Wouters <thomas@python.org>
parents:
36718
diff
changeset
|
2254 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2255 dotted_name: NAME ('.' NAME)* |
| 2256 */ | |
|
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
|
2257 PyObject *str; |
|
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2258 |
| 35742 | 2259 loop: |
| 2260 switch (TYPE(n)) { | |
| 2261 case import_as_name: | |
|
39442
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2262 str = NULL; |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2263 if (NCH(n) == 3) { |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2264 str = NEW_IDENTIFIER(CHILD(n, 2)); |
|
654c380cf8b9
Merged revisions 46753-51188 via svnmerge from
Thomas Wouters <thomas@python.org>
parents:
38453
diff
changeset
|
2265 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2266 return alias(NEW_IDENTIFIER(CHILD(n, 0)), str, c->c_arena); |
| 35742 | 2267 case dotted_as_name: |
| 2268 if (NCH(n) == 1) { | |
| 2269 n = CHILD(n, 0); | |
| 2270 goto loop; | |
| 2271 } | |
| 2272 else { | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2273 alias_ty a = alias_for_import_name(c, CHILD(n, 0)); |
|
39610
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2274 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2275 return NULL; |
| 35742 | 2276 assert(!a->asname); |
| 2277 a->asname = NEW_IDENTIFIER(CHILD(n, 2)); | |
| 2278 return a; | |
| 2279 } | |
| 2280 break; | |
| 2281 case dotted_name: | |
| 2282 if (NCH(n) == 1) | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2283 return alias(NEW_IDENTIFIER(CHILD(n, 0)), NULL, c->c_arena); |
| 35742 | 2284 else { |
| 2285 /* 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
|
2286 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2287 size_t len; |
| 35742 | 2288 char *s; |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2289 PyObject *uni; |
| 35742 | 2290 |
| 2291 len = 0; | |
| 2292 for (i = 0; i < NCH(n); i += 2) | |
| 2293 /* length of string plus one for the dot */ | |
| 2294 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2295 len--; /* the last name doesn't have a dot */ | |
| 2296 str = PyString_FromStringAndSize(NULL, len); | |
| 2297 if (!str) | |
| 2298 return NULL; | |
| 2299 s = PyString_AS_STRING(str); | |
| 2300 if (!s) | |
| 2301 return NULL; | |
| 2302 for (i = 0; i < NCH(n); i += 2) { | |
| 2303 char *sch = STR(CHILD(n, i)); | |
| 2304 strcpy(s, STR(CHILD(n, i))); | |
| 2305 s += strlen(sch); | |
| 2306 *s++ = '.'; | |
| 2307 } | |
| 2308 --s; | |
| 2309 *s = '\0'; | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2310 uni = PyUnicode_DecodeUTF8(PyString_AS_STRING(str), |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2311 PyString_GET_SIZE(str), |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2312 NULL); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2313 Py_DECREF(str); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2314 if (!uni) |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2315 return NULL; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2316 str = uni; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2317 PyUnicode_InternInPlace(&str); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2318 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2319 return alias(str, NULL, c->c_arena); |
| 35742 | 2320 } |
| 2321 break; | |
| 2322 case STAR: | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2323 str = PyUnicode_InternFromString("*"); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2324 PyArena_AddPyObject(c->c_arena, str); |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2325 return alias(str, NULL, c->c_arena); |
| 35742 | 2326 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2327 PyErr_Format(PyExc_SystemError, |
| 35742 | 2328 "unexpected import name: %d", TYPE(n)); |
| 2329 return NULL; | |
| 2330 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2331 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2332 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2333 return NULL; |
| 2334 } | |
| 2335 | |
| 2336 static stmt_ty | |
| 2337 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2338 { | |
| 2339 /* | |
| 2340 import_stmt: import_name | import_from | |
| 2341 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
|
2342 import_from: 'from' (('.' | '...')* dotted_name | ('.' | '...')+) |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2343 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2344 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2345 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2346 int col_offset; |
| 35742 | 2347 int i; |
| 2348 asdl_seq *aliases; | |
| 2349 | |
| 2350 REQ(n, import_stmt); | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2351 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2352 col_offset = n->n_col_offset; |
| 35742 | 2353 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2354 if (TYPE(n) == import_name) { |
| 35742 | 2355 n = CHILD(n, 1); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2356 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2357 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
|
2358 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2359 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2360 for (i = 0; i < NCH(n); i += 2) { |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2361 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i)); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2362 if (!import_alias) |
| 35742 | 2363 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2364 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2365 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2366 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2367 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2368 else if (TYPE(n) == import_from) { |
| 35742 | 2369 int n_children; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2370 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2371 alias_ty mod = NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2372 identifier modname; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2373 |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2374 /* 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
|
2375 optional module name */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2376 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
|
2377 if (TYPE(CHILD(n, idx)) == dotted_name) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2378 mod = alias_for_import_name(c, CHILD(n, idx)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2379 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2380 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2381 } 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
|
2382 /* 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
|
2383 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2384 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2385 } 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
|
2386 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2387 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2388 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2389 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2390 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
|
2391 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2392 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2393 /* from ... import * */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2394 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2395 n_children = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2396 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2397 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2398 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2399 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2400 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2401 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2402 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2403 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2404 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2405 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2406 if (n_children % 2 == 0) { |
| 35742 | 2407 ast_error(n, "trailing comma not allowed without" |
| 2408 " surrounding parentheses"); | |
| 2409 return NULL; | |
| 2410 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2411 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2412 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2413 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
|
2414 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2415 } |
| 35742 | 2416 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2417 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
|
2418 if (!aliases) |
| 35742 | 2419 return NULL; |
| 2420 | |
| 2421 /* 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
|
2422 if (TYPE(n) == STAR) { |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
2423 alias_ty import_alias = alias_for_import_name(c, n); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2424 if (!import_alias) |
| 35742 | 2425 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2426 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2427 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2428 else { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2429 for (i = 0; i < NCH(n); i += 2) { |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2430 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i)); |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2431 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2432 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2433 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
|
2434 } |
| 35742 | 2435 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2436 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2437 modname = mod->name; |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2438 else |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2439 modname = new_identifier("", c->c_arena); |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2440 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
|
2441 c->c_arena); |
| 35742 | 2442 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2443 PyErr_Format(PyExc_SystemError, |
| 35742 | 2444 "unknown import statement: starts with command '%s'", |
| 2445 STR(CHILD(n, 0))); | |
| 2446 return NULL; | |
| 2447 } | |
| 2448 | |
| 2449 static stmt_ty | |
| 2450 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2451 { | |
| 2452 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2453 identifier name; | |
| 2454 asdl_seq *s; | |
| 2455 int i; | |
| 2456 | |
| 2457 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
|
2458 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2459 if (!s) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2460 return NULL; |
| 35742 | 2461 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
|
2462 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
|
2463 if (!name) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2464 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2465 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2466 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2467 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2468 } |
| 2469 | |
| 2470 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2471 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
|
2472 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2473 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2474 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2475 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2476 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2477 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2478 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2479 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
|
2480 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2481 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2482 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2483 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2484 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2485 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2486 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2487 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2488 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
|
2489 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2490 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2491 static stmt_ty |
| 35742 | 2492 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2493 { | |
| 2494 /* assert_stmt: 'assert' test [',' test] */ | |
| 2495 REQ(n, assert_stmt); | |
| 2496 if (NCH(n) == 2) { | |
| 2497 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2498 if (!expression) | |
| 2499 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2500 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2501 } |
| 2502 else if (NCH(n) == 4) { | |
| 2503 expr_ty expr1, expr2; | |
| 2504 | |
| 2505 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2506 if (!expr1) | |
| 2507 return NULL; | |
| 2508 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2509 if (!expr2) | |
| 2510 return NULL; | |
| 2511 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2512 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2513 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2514 PyErr_Format(PyExc_SystemError, |
| 35742 | 2515 "improper number of parts to 'assert' statement: %d", |
| 2516 NCH(n)); | |
| 2517 return NULL; | |
| 2518 } | |
| 2519 | |
| 2520 static asdl_seq * | |
| 2521 ast_for_suite(struct compiling *c, const node *n) | |
| 2522 { | |
| 2523 /* 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
|
2524 asdl_seq *seq; |
| 35742 | 2525 stmt_ty s; |
| 2526 int i, total, num, end, pos = 0; | |
| 2527 node *ch; | |
| 2528 | |
| 2529 REQ(n, suite); | |
| 2530 | |
| 2531 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
|
2532 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2533 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2534 return NULL; |
| 35742 | 2535 if (TYPE(CHILD(n, 0)) == simple_stmt) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2536 n = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2537 /* simple_stmt always ends with a NEWLINE, |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2538 and may have a trailing SEMI |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2539 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2540 end = NCH(n) - 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2541 if (TYPE(CHILD(n, end - 1)) == SEMI) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2542 end--; |
| 35742 | 2543 /* loop by 2 to skip semi-colons */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2544 for (i = 0; i < end; i += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2545 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2546 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2547 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2548 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2549 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2550 } |
| 35742 | 2551 } |
| 2552 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2553 for (i = 2; i < (NCH(n) - 1); i++) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2554 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2555 REQ(ch, stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2556 num = num_stmts(ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2557 if (num == 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2558 /* small_stmt or compound_stmt with only one child */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2559 s = ast_for_stmt(c, ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2560 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2561 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2562 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2563 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2564 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2565 int j; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2566 ch = CHILD(ch, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2567 REQ(ch, simple_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2568 for (j = 0; j < NCH(ch); j += 2) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2569 /* statement terminates with a semi-colon ';' */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2570 if (NCH(CHILD(ch, j)) == 0) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2571 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2572 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2573 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2574 s = ast_for_stmt(c, CHILD(ch, j)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2575 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2576 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2577 asdl_seq_SET(seq, pos++, s); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2578 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2579 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2580 } |
| 35742 | 2581 } |
| 2582 assert(pos == seq->size); | |
| 2583 return seq; | |
| 2584 } | |
| 2585 | |
| 2586 static stmt_ty | |
| 2587 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2588 { | |
| 2589 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2590 ['else' ':' suite] | |
| 2591 */ | |
| 2592 char *s; | |
| 2593 | |
| 2594 REQ(n, if_stmt); | |
| 2595 | |
| 2596 if (NCH(n) == 4) { | |
| 2597 expr_ty expression; | |
| 2598 asdl_seq *suite_seq; | |
| 2599 | |
| 2600 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2601 if (!expression) | |
| 2602 return NULL; | |
| 2603 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
|
2604 if (!suite_seq) |
| 35742 | 2605 return NULL; |
| 2606 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2607 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
2608 c->c_arena); |
| 35742 | 2609 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2610 |
| 35742 | 2611 s = STR(CHILD(n, 4)); |
| 2612 /* s[2], the third character in the string, will be | |
| 2613 's' for el_s_e, or | |
| 2614 'i' for el_i_f | |
| 2615 */ | |
| 2616 if (s[2] == 's') { | |
| 2617 expr_ty expression; | |
| 2618 asdl_seq *seq1, *seq2; | |
| 2619 | |
| 2620 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2621 if (!expression) | |
| 2622 return NULL; | |
| 2623 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
|
2624 if (!seq1) |
| 35742 | 2625 return NULL; |
| 2626 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
|
2627 if (!seq2) |
| 35742 | 2628 return NULL; |
| 2629 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2630 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
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parents:
41509
diff
changeset
|
2631 c->c_arena); |
| 35742 | 2632 } |
| 2633 else if (s[2] == 'i') { | |
|
40450
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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40215
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changeset
|
2634 int i, n_elif, has_else = 0; |
|
41554
06145fbc7ab9
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parents:
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diff
changeset
|
2635 expr_ty expression; |
|
06145fbc7ab9
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parents:
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diff
changeset
|
2636 asdl_seq *suite_seq; |
|
40450
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2637 asdl_seq *orelse = NULL; |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
2638 n_elif = NCH(n) - 4; |
| 35742 | 2639 /* must reference the child n_elif+1 since 'else' token is third, |
| 2640 not fourth, child from the end. */ | |
|
40450
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parents:
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diff
changeset
|
2641 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
2642 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
2643 has_else = 1; |
|
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Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2644 n_elif -= 3; |
|
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parents:
40215
diff
changeset
|
2645 } |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
2646 n_elif /= 4; |
| 35742 | 2647 |
|
40450
cc992d75d5b3
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parents:
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diff
changeset
|
2648 if (has_else) { |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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parents:
41509
diff
changeset
|
2649 asdl_seq *suite_seq2; |
| 35742 | 2650 |
|
40450
cc992d75d5b3
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parents:
40215
diff
changeset
|
2651 orelse = asdl_seq_new(1, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2652 if (!orelse) |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
2653 return NULL; |
| 35742 | 2654 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
36072
de16a85c3b4c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2655 if (!expression) |
| 35742 | 2656 return NULL; |
|
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|
2657 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
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|
2658 if (!suite_seq) |
|
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Neal Norwitz <nnorwitz@gmail.com>
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|
2659 return NULL; |
|
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|
2660 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
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|
2661 if (!suite_seq2) |
| 35742 | 2662 return NULL; |
| 2663 | |
|
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|
2664 asdl_seq_SET(orelse, 0, |
|
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|
2665 If(expression, suite_seq, suite_seq2, |
|
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|
2666 LINENO(CHILD(n, NCH(n) - 6)), |
|
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|
2667 CHILD(n, NCH(n) - 6)->n_col_offset, |
|
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|
2668 c->c_arena)); |
|
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|
2669 /* the just-created orelse handled the last elif */ |
|
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|
2670 n_elif--; |
|
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|
2671 } |
| 35742 | 2672 |
|
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|
2673 for (i = 0; i < n_elif; i++) { |
|
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|
2674 int off = 5 + (n_elif - i - 1) * 4; |
|
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|
2675 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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|
2676 if (!newobj) |
|
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|
2677 return NULL; |
| 35742 | 2678 expression = ast_for_expr(c, CHILD(n, off)); |
|
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Neal Norwitz <nnorwitz@gmail.com>
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|
2679 if (!expression) |
| 35742 | 2680 return NULL; |
| 2681 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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|
2682 if (!suite_seq) |
| 35742 | 2683 return NULL; |
| 2684 | |
|
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|
2685 asdl_seq_SET(newobj, 0, |
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2686 If(expression, suite_seq, orelse, |
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|
2687 LINENO(CHILD(n, off)), |
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|
2688 CHILD(n, off)->n_col_offset, c->c_arena)); |
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2689 orelse = newobj; |
|
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2690 } |
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|
2691 expression = ast_for_expr(c, CHILD(n, 1)); |
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|
2692 if (!expression) |
|
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|
2693 return NULL; |
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|
2694 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
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|
2695 if (!suite_seq) |
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|
2696 return NULL; |
|
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|
2697 return If(expression, suite_seq, orelse, |
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|
2698 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2699 } |
|
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|
2700 |
|
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|
2701 PyErr_Format(PyExc_SystemError, |
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Cleanup a bit and make things more consistent.
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|
2702 "unexpected token in 'if' statement: %s", s); |
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|
2703 return NULL; |
| 35742 | 2704 } |
| 2705 | |
| 2706 static stmt_ty | |
| 2707 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2708 { | |
| 2709 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2710 REQ(n, while_stmt); | |
| 2711 | |
| 2712 if (NCH(n) == 4) { | |
| 2713 expr_ty expression; | |
| 2714 asdl_seq *suite_seq; | |
| 2715 | |
| 2716 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2717 if (!expression) | |
| 2718 return NULL; | |
| 2719 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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|
2720 if (!suite_seq) |
| 35742 | 2721 return NULL; |
|
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|
2722 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2723 } |
| 2724 else if (NCH(n) == 7) { | |
| 2725 expr_ty expression; | |
| 2726 asdl_seq *seq1, *seq2; | |
| 2727 | |
| 2728 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2729 if (!expression) | |
| 2730 return NULL; | |
| 2731 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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parents:
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|
2732 if (!seq1) |
| 35742 | 2733 return NULL; |
| 2734 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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parents:
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|
2735 if (!seq2) |
| 35742 | 2736 return NULL; |
| 2737 | |
|
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|
2738 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2739 } |
|
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Cleanup a bit and make things more consistent.
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parents:
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|
2740 |
|
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Cleanup a bit and make things more consistent.
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changeset
|
2741 PyErr_Format(PyExc_SystemError, |
|
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Cleanup a bit and make things more consistent.
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parents:
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|
2742 "wrong number of tokens for 'while' statement: %d", |
|
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Cleanup a bit and make things more consistent.
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diff
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|
2743 NCH(n)); |
|
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Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2744 return NULL; |
| 35742 | 2745 } |
| 2746 | |
| 2747 static stmt_ty | |
| 2748 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2749 { | |
|
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|
2750 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2751 expr_ty expression; |
| 2752 expr_ty target; | |
|
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|
2753 const node *node_target; |
| 35742 | 2754 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2755 REQ(n, for_stmt); | |
| 2756 | |
| 2757 if (NCH(n) == 9) { | |
|
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|
2758 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2759 if (!seq) |
| 2760 return NULL; | |
| 2761 } | |
| 2762 | |
|
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|
2763 node_target = CHILD(n, 1); |
|
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|
2764 _target = ast_for_exprlist(c, node_target, Store); |
|
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Cleanup a bit and make things more consistent.
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|
2765 if (!_target) |
| 35742 | 2766 return NULL; |
|
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|
2767 /* Check the # of children rather than the length of _target, since |
|
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|
2768 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2769 if (NCH(node_target) == 1) |
|
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|
2770 target = (expr_ty)asdl_seq_GET(_target, 0); |
| 35742 | 2771 else |
|
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|
2772 target = Tuple(_target, Store, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2773 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2774 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
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parents:
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diff
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|
2775 if (!expression) |
| 35742 | 2776 return NULL; |
| 2777 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
2778 if (!suite_seq) |
| 35742 | 2779 return NULL; |
| 2780 | |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2781 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
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parents:
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changeset
|
2782 c->c_arena); |
| 35742 | 2783 } |
| 2784 | |
| 2785 static excepthandler_ty | |
| 2786 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2787 { | |
|
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|
2788 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2789 REQ(exc, except_clause); |
| 2790 REQ(body, suite); | |
| 2791 | |
| 2792 if (NCH(exc) == 1) { | |
| 2793 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2794 if (!suite_seq) | |
| 2795 return NULL; | |
| 2796 | |
|
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|
2797 return ExceptHandler(NULL, NULL, suite_seq, LINENO(exc), |
|
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changeset
|
2798 exc->n_col_offset, c->c_arena); |
| 35742 | 2799 } |
| 2800 else if (NCH(exc) == 2) { | |
| 2801 expr_ty expression; | |
| 2802 asdl_seq *suite_seq; | |
| 2803 | |
| 2804 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2805 if (!expression) | |
| 2806 return NULL; | |
| 2807 suite_seq = ast_for_suite(c, body); | |
|
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diff
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|
2808 if (!suite_seq) |
| 35742 | 2809 return NULL; |
| 2810 | |
|
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|
2811 return ExceptHandler(expression, NULL, suite_seq, LINENO(exc), |
|
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Thomas Wouters <thomas@python.org>
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changeset
|
2812 exc->n_col_offset, c->c_arena); |
| 35742 | 2813 } |
| 2814 else if (NCH(exc) == 4) { | |
| 2815 asdl_seq *suite_seq; | |
| 2816 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
|
2817 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
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|
2818 if (!e) |
| 35742 | 2819 return NULL; |
|
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|
2820 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
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diff
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|
2821 if (!expression) |
|
de16a85c3b4c
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diff
changeset
|
2822 return NULL; |
| 35742 | 2823 suite_seq = ast_for_suite(c, body); |
|
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diff
changeset
|
2824 if (!suite_seq) |
| 35742 | 2825 return NULL; |
| 2826 | |
|
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|
2827 return ExceptHandler(expression, e, suite_seq, LINENO(exc), |
|
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2828 exc->n_col_offset, c->c_arena); |
| 35742 | 2829 } |
|
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|
2830 |
|
de16a85c3b4c
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diff
changeset
|
2831 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
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changeset
|
2832 "wrong number of children for 'except' clause: %d", |
|
de16a85c3b4c
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diff
changeset
|
2833 NCH(exc)); |
|
de16a85c3b4c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2834 return NULL; |
| 35742 | 2835 } |
| 2836 | |
| 2837 static stmt_ty | |
| 2838 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2839 { | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2840 const int nch = NCH(n); |
|
719ba02d2e2c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2841 int n_except = (nch - 3)/3; |
|
719ba02d2e2c
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parents:
36065
diff
changeset
|
2842 asdl_seq *body, *orelse = NULL, *finally = NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2843 |
| 35742 | 2844 REQ(n, try_stmt); |
| 2845 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2846 body = ast_for_suite(c, CHILD(n, 2)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2847 if (body == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2848 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2849 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2850 if (TYPE(CHILD(n, nch - 3)) == NAME) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2851 if (strcmp(STR(CHILD(n, nch - 3)), "finally") == 0) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2852 if (nch >= 9 && TYPE(CHILD(n, nch - 6)) == NAME) { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2853 /* 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
|
2854 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
|
2855 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
|
2856 orelse = ast_for_suite(c, CHILD(n, nch - 4)); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2857 if (orelse == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2858 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2859 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2860 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2861 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2862 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
|
2863 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
|
2864 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2865 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2866 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2867 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2868 /* 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
|
2869 otherwise it would have a type of except_clause */ |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2870 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
|
2871 if (orelse == NULL) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2872 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2873 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2874 } |
| 35742 | 2875 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2876 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
|
2877 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2878 return NULL; |
| 2879 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2880 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2881 if (n_except > 0) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2882 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2883 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
|
2884 /* 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
|
2885 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
|
2886 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
|
2887 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2888 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2889 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
|
2890 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
|
2891 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
|
2892 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2893 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2894 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
|
2895 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2896 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2897 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
|
2898 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
|
2899 if (!finally) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2900 return except_st; |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2901 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2902 /* 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
|
2903 TryFinally to emulate try ... except ... finally */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2904 body = asdl_seq_new(1, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2905 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2906 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2907 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
|
2908 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2909 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2910 /* 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
|
2911 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
|
2912 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2913 } |
| 2914 | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2915 static expr_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2916 ast_for_with_var(struct compiling *c, const node *n) |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2917 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2918 REQ(n, with_var); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2919 return ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2920 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2921 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2922 /* with_stmt: 'with' test [ with_var ] ':' suite */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2923 static stmt_ty |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2924 ast_for_with_stmt(struct compiling *c, const node *n) |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2925 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2926 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2927 int suite_index = 3; /* skip 'with', test, and ':' */ |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2928 asdl_seq *suite_seq; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2929 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2930 assert(TYPE(n) == with_stmt); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2931 context_expr = ast_for_expr(c, CHILD(n, 1)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2932 if (TYPE(CHILD(n, 2)) == with_var) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2933 optional_vars = ast_for_with_var(c, CHILD(n, 2)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2934 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2935 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2936 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2937 } |
|
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
|
2938 if (!set_context(c, optional_vars, Store, n)) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2939 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2940 } |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2941 suite_index = 4; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2942 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2943 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2944 suite_seq = ast_for_suite(c, CHILD(n, suite_index)); |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2945 if (!suite_seq) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2946 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2947 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2948 return With(context_expr, optional_vars, suite_seq, LINENO(n), |
|
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cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2949 n->n_col_offset, c->c_arena); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2950 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2951 |
| 35742 | 2952 static stmt_ty |
|
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parents:
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|
2953 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 2954 { |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2955 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2956 asdl_seq *s; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2957 expr_ty call, dummy; |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2958 |
| 35742 | 2959 REQ(n, classdef); |
| 2960 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2961 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 2962 s = ast_for_suite(c, CHILD(n, 3)); |
| 2963 if (!s) | |
| 2964 return NULL; | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2965 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
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|
2966 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2967 } |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2968 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2969 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
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cc992d75d5b3
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parents:
40215
diff
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|
2970 s = ast_for_suite(c, CHILD(n,5)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2971 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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|
2972 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2973 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), NULL, NULL, NULL, NULL, s, |
|
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|
2974 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2975 } |
| 2976 | |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2977 /* class NAME '(' arglist ')' ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2978 /* build up a fake Call node so we can extract its pieces */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2979 dummy = Name(NEW_IDENTIFIER(CHILD(n, 1)), Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2980 call = ast_for_call(c, CHILD(n, 3), dummy); |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2981 if (!call) |
| 35742 | 2982 return NULL; |
| 2983 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
|
2984 if (!s) |
| 35742 | 2985 return NULL; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2986 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2987 return ClassDef(NEW_IDENTIFIER(CHILD(n, 1)), |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2988 call->v.Call.args, call->v.Call.keywords, |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
2989 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
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changeset
|
2990 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2991 } |
| 2992 | |
| 2993 static stmt_ty | |
| 2994 ast_for_stmt(struct compiling *c, const node *n) | |
| 2995 { | |
| 2996 if (TYPE(n) == stmt) { | |
|
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parents:
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changeset
|
2997 assert(NCH(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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|
2998 n = CHILD(n, 0); |
| 35742 | 2999 } |
| 3000 if (TYPE(n) == simple_stmt) { | |
|
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|
3001 assert(num_stmts(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
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changeset
|
3002 n = CHILD(n, 0); |
| 35742 | 3003 } |
| 3004 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
3005 REQ(n, small_stmt); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
3006 n = CHILD(n, 0); |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3007 /* small_stmt: expr_stmt | del_stmt | pass_stmt | flow_stmt |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3008 | import_stmt | global_stmt | nonlocal_stmt | assert_stmt |
|
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|
3009 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
3010 switch (TYPE(n)) { |
| 35742 | 3011 case expr_stmt: |
| 3012 return ast_for_expr_stmt(c, n); | |
| 3013 case del_stmt: | |
| 3014 return ast_for_del_stmt(c, n); | |
| 3015 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
|
3016 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3017 case flow_stmt: |
| 3018 return ast_for_flow_stmt(c, n); | |
| 3019 case import_stmt: | |
| 3020 return ast_for_import_stmt(c, n); | |
| 3021 case global_stmt: | |
| 3022 return ast_for_global_stmt(c, n); | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3023 case nonlocal_stmt: |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3024 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3025 case assert_stmt: |
| 3026 return ast_for_assert_stmt(c, n); | |
| 3027 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3028 PyErr_Format(PyExc_SystemError, |
| 35742 | 3029 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3030 TYPE(n), NCH(n)); | |
| 3031 return NULL; | |
| 3032 } | |
| 3033 } | |
| 3034 else { | |
| 3035 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
41824
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changeset
|
3036 | funcdef | classdef | decorated |
|
40450
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
3037 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3038 node *ch = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
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changeset
|
3039 REQ(n, compound_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3040 switch (TYPE(ch)) { |
| 35742 | 3041 case if_stmt: |
| 3042 return ast_for_if_stmt(c, ch); | |
| 3043 case while_stmt: | |
| 3044 return ast_for_while_stmt(c, ch); | |
| 3045 case for_stmt: | |
| 3046 return ast_for_for_stmt(c, ch); | |
| 3047 case try_stmt: | |
| 3048 return ast_for_try_stmt(c, ch); | |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3049 case with_stmt: |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3050 return ast_for_with_stmt(c, ch); |
| 35742 | 3051 case funcdef: |
|
41824
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changeset
|
3052 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3053 case classdef: |
|
41824
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changeset
|
3054 return ast_for_classdef(c, ch, NULL); |
|
24b60622b944
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parents:
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changeset
|
3055 case decorated: |
|
24b60622b944
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parents:
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changeset
|
3056 return ast_for_decorated(c, ch); |
| 35742 | 3057 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3058 PyErr_Format(PyExc_SystemError, |
| 35742 | 3059 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3060 TYPE(n), NCH(n)); | |
| 3061 return NULL; | |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
3062 } |
| 35742 | 3063 } |
| 3064 } | |
| 3065 | |
| 3066 static PyObject * | |
|
46664
031dfe455585
Merged revisions 62425-62429,62434-62436,62441,62444,62446-62448,62450-62455,62463,62465-62466,62469,62474,62476-62478,62480,62485,62492,62497-62498,62500,62507,62513-62514,62516,62521,62531,62535,62545-62546,62548-62551,62553-62559,62569,62574,62577,62593,62595,62604-62606,62608,62616,62626-62627,62636,62638,62644-62645,62647-62648,62651-62653,62656,62661,62663,62680,62686-62687,62696,62699-62703,62711 via svnmerge from
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|
3067 parsenumber(struct compiling *c, const char *s) |
| 35742 | 3068 { |
|
41554
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|
3069 const char *end; |
|
06145fbc7ab9
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|
3070 long x; |
|
06145fbc7ab9
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changeset
|
3071 double dx; |
| 35742 | 3072 #ifndef WITHOUT_COMPLEX |
|
46664
031dfe455585
Merged revisions 62425-62429,62434-62436,62441,62444,62446-62448,62450-62455,62463,62465-62466,62469,62474,62476-62478,62480,62485,62492,62497-62498,62500,62507,62513-62514,62516,62521,62531,62535,62545-62546,62548-62551,62553-62559,62569,62574,62577,62593,62595,62604-62606,62608,62616,62626-62627,62636,62638,62644-62645,62647-62648,62651-62653,62656,62661,62663,62680,62686-62687,62696,62699-62703,62711 via svnmerge from
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|
3073 Py_complex compl; |
|
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|
3074 int imflag; |
| 35742 | 3075 #endif |
| 3076 | |
|
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|
3077 errno = 0; |
|
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changeset
|
3078 end = s + strlen(s) - 1; |
| 35742 | 3079 #ifndef WITHOUT_COMPLEX |
|
41554
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changeset
|
3080 imflag = *end == 'j' || *end == 'J'; |
| 35742 | 3081 #endif |
|
41554
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changeset
|
3082 if (s[0] == '0') { |
|
06145fbc7ab9
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changeset
|
3083 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
06145fbc7ab9
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|
3084 if (x < 0 && errno == 0) { |
|
06145fbc7ab9
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|
3085 return PyLong_FromString((char *)s, |
|
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|
3086 (char **)0, |
|
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|
3087 0); |
|
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|
3088 } |
|
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|
3089 } |
|
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|
3090 else |
|
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changeset
|
3091 x = PyOS_strtol((char *)s, (char **)&end, 0); |
|
06145fbc7ab9
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|
3092 if (*end == '\0') { |
|
06145fbc7ab9
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|
3093 if (errno != 0) |
|
06145fbc7ab9
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changeset
|
3094 return PyLong_FromString((char *)s, (char **)0, 0); |
|
44099
f324631462a2
Cleanup: Replaced most PyInt_ aliases with PyLong_ and disabled the aliases in intobject.h
Christian Heimes <christian@cheimes.de>
parents:
44025
diff
changeset
|
3095 return PyLong_FromLong(x); |
|
41554
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|
3096 } |
|
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changeset
|
3097 /* XXX Huge floats may silently fail */ |
| 35742 | 3098 #ifndef WITHOUT_COMPLEX |
|
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|
3099 if (imflag) { |
|
46664
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|
3100 compl.real = 0.; |
|
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3101 PyFPE_START_PROTECT("atof", return 0) |
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3102 compl.imag = PyOS_ascii_atof(s); |
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3103 PyFPE_END_PROTECT(c) |
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3104 return PyComplex_FromCComplex(compl); |
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3105 } |
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3106 else |
| 35742 | 3107 #endif |
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3108 { |
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3109 PyFPE_START_PROTECT("atof", return 0) |
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3110 dx = PyOS_ascii_atof(s); |
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3111 PyFPE_END_PROTECT(dx) |
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3112 return PyFloat_FromDouble(dx); |
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3113 } |
| 35742 | 3114 } |
| 3115 | |
| 3116 static PyObject * | |
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3117 decode_utf8(struct compiling *c, const char **sPtr, const char *end, char* encoding) |
| 35742 | 3118 { |
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3119 PyObject *u, *v; |
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3120 char *s, *t; |
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3121 t = s = (char *)*sPtr; |
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3122 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
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3123 while (s < end && (*s & 0x80)) s++; |
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3124 *sPtr = s; |
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3125 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
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3126 if (u == NULL) |
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3127 return NULL; |
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3128 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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3129 Py_DECREF(u); |
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3130 return v; |
| 35742 | 3131 } |
| 3132 | |
| 3133 static PyObject * | |
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3134 decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, const char *encoding) |
| 35742 | 3135 { |
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3136 PyObject *v, *u; |
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3137 char *buf; |
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3138 char *p; |
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3139 const char *end; |
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3140 |
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3141 if (encoding == NULL) { |
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3142 buf = (char *)s; |
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3143 u = NULL; |
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3144 } else if (strcmp(encoding, "iso-8859-1") == 0) { |
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3145 buf = (char *)s; |
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3146 u = NULL; |
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3147 } else { |
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3148 /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ |
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3149 u = PyString_FromStringAndSize((char *)NULL, len * 4); |
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3150 if (u == NULL) |
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3151 return NULL; |
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3152 p = buf = PyString_AsString(u); |
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3153 end = s + len; |
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3154 while (s < end) { |
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3155 if (*s == '\\') { |
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3156 *p++ = *s++; |
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3157 if (*s & 0x80) { |
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3158 strcpy(p, "u005c"); |
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3159 p += 5; |
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3160 } |
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3161 } |
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3162 if (*s & 0x80) { /* XXX inefficient */ |
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3163 PyObject *w; |
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3164 char *r; |
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3165 Py_ssize_t rn, i; |
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3166 w = decode_utf8(c, &s, end, "utf-16-be"); |
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3167 if (w == NULL) { |
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3168 Py_DECREF(u); |
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3169 return NULL; |
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3170 } |
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3171 r = PyString_AS_STRING(w); |
|
44351
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3172 rn = Py_SIZE(w); |
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3173 assert(rn % 2 == 0); |
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3174 for (i = 0; i < rn; i += 2) { |
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3175 sprintf(p, "\\u%02x%02x", |
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3176 r[i + 0] & 0xFF, |
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3177 r[i + 1] & 0xFF); |
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3178 p += 6; |
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3179 } |
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3180 Py_DECREF(w); |
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3181 } else { |
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3182 *p++ = *s++; |
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3183 } |
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3184 } |
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3185 len = p - buf; |
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3186 s = buf; |
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3187 } |
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3188 if (rawmode) |
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3189 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
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3190 else |
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3191 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
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3192 Py_XDECREF(u); |
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3193 return v; |
| 35742 | 3194 } |
| 3195 | |
| 3196 /* s is a Python string literal, including the bracketing quote characters, | |
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3197 * and r &/or b prefixes (if any), and embedded escape sequences (if any). |
| 35742 | 3198 * parsestr parses it, and returns the decoded Python string object. |
| 3199 */ | |
| 3200 static PyObject * | |
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3201 parsestr(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3202 { |
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3203 size_t len; |
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3204 const char *s = STR(n); |
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3205 int quote = Py_CHARMASK(*s); |
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3206 int rawmode = 0; |
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3207 int need_encoding; |
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3208 if (isalpha(quote)) { |
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|
3209 if (quote == 'b' || quote == 'B') { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3210 quote = *++s; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3211 *bytesmode = 1; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3212 } |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
3213 if (quote == 'r' || quote == 'R') { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3214 quote = *++s; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3215 rawmode = 1; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3216 } |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3217 } |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3218 if (quote != '\'' && quote != '\"') { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3219 PyErr_BadInternalCall(); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3220 return NULL; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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changeset
|
3221 } |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3222 s++; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3223 len = strlen(s); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3224 if (len > INT_MAX) { |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3225 PyErr_SetString(PyExc_OverflowError, |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
3226 "string to parse is too long"); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3227 return NULL; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3228 } |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3229 if (s[--len] != quote) { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3230 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3231 return NULL; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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changeset
|
3232 } |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3233 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3234 s += 2; |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3235 len -= 2; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3236 if (s[--len] != quote || s[--len] != quote) { |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3237 PyErr_BadInternalCall(); |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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|
3238 return NULL; |
| 40894 | 3239 } |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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diff
changeset
|
3240 } |
|
46306
b10292eafb07
Reverted r62128 on Guido's orders
Benjamin Peterson <benjamin@python.org>
parents:
46272
diff
changeset
|
3241 if (!*bytesmode && !rawmode) { |
|
46664
031dfe455585
Merged revisions 62425-62429,62434-62436,62441,62444,62446-62448,62450-62455,62463,62465-62466,62469,62474,62476-62478,62480,62485,62492,62497-62498,62500,62507,62513-62514,62516,62521,62531,62535,62545-62546,62548-62551,62553-62559,62569,62574,62577,62593,62595,62604-62606,62608,62616,62626-62627,62636,62638,62644-62645,62647-62648,62651-62653,62656,62661,62663,62680,62686-62687,62696,62699-62703,62711 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
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diff
changeset
|
3242 return decode_unicode(c, s, len, rawmode, c->c_encoding); |
|
41554
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3243 } |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3244 if (*bytesmode) { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3245 /* Disallow non-ascii characters (but not escapes) */ |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3246 const char *c; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
3247 for (c = s; *c; c++) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3248 if (Py_CHARMASK(*c) >= 0x80) { |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3249 ast_error(n, "bytes can only contain ASCII " |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3250 "literal characters."); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
3251 return NULL; |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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changeset
|
3252 } |
|
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changeset
|
3253 } |
|
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3254 } |
|
46120
78504d604b44
Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
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diff
changeset
|
3255 need_encoding = (!*bytesmode && c->c_encoding != NULL && |
|
78504d604b44
Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
45931
diff
changeset
|
3256 strcmp(c->c_encoding, "utf-8") != 0 && |
|
78504d604b44
Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
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changeset
|
3257 strcmp(c->c_encoding, "iso-8859-1") != 0); |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3258 if (rawmode || strchr(s, '\\') == NULL) { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3259 if (need_encoding) { |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3260 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3261 if (u == NULL || !*bytesmode) |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3262 return u; |
|
46120
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Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
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diff
changeset
|
3263 v = PyUnicode_AsEncodedString(u, c->c_encoding, NULL); |
|
41554
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Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3264 Py_DECREF(u); |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
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diff
changeset
|
3265 return v; |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3266 } else if (*bytesmode) { |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
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changeset
|
3267 return PyString_FromStringAndSize(s, len); |
|
46120
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Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
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changeset
|
3268 } else if (strcmp(c->c_encoding, "utf-8") == 0) { |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3269 return PyUnicode_FromStringAndSize(s, len); |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3270 } else { |
|
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3271 return PyUnicode_DecodeLatin1(s, len, NULL); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3272 } |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
3273 } |
|
41698
7d49038e99c9
Remove support for u"..." literals.
Guido van Rossum <guido@python.org>
parents:
41595
diff
changeset
|
3274 return PyString_DecodeEscape(s, len, NULL, 1, |
|
46120
78504d604b44
Merged revisions 61952-61953 via svnmerge from
Christian Heimes <christian@cheimes.de>
parents:
45931
diff
changeset
|
3275 need_encoding ? c->c_encoding : NULL); |
| 35742 | 3276 } |
| 3277 | |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3278 /* Build a Python string object out of a STRING+ atom. This takes care of |
| 35742 | 3279 * compile-time literal catenation, calling parsestr() on each piece, and |
| 3280 * pasting the intermediate results together. | |
| 3281 */ | |
| 3282 static PyObject * | |
| 40894 | 3283 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3284 { |
|
41554
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3285 PyObject *v; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
3286 int i; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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diff
changeset
|
3287 REQ(CHILD(n, 0), STRING); |
|
46120
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|
3288 v = parsestr(c, CHILD(n, 0), bytesmode); |
|
41554
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changeset
|
3289 if (v != NULL) { |
|
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diff
changeset
|
3290 /* String literal concatenation */ |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
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changeset
|
3291 for (i = 1; i < NCH(n); i++) { |
|
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changeset
|
3292 PyObject *s; |
|
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changeset
|
3293 int subbm = 0; |
|
46120
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Merged revisions 61952-61953 via svnmerge from
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changeset
|
3294 s = parsestr(c, CHILD(n, i), &subbm); |
|
41554
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changeset
|
3295 if (s == NULL) |
|
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diff
changeset
|
3296 goto onError; |
|
06145fbc7ab9
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Guido van Rossum <guido@python.org>
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diff
changeset
|
3297 if (*bytesmode != subbm) { |
|
43819
068655054b0d
Minimal change that disables (AFAICT) the interpolation of \u and \U inside
Guido van Rossum <guido@python.org>
parents:
43777
diff
changeset
|
3298 ast_error(n, "cannot mix bytes and nonbytes literals"); |
|
41554
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changeset
|
3299 goto onError; |
|
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changeset
|
3300 } |
|
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changeset
|
3301 if (PyString_Check(v) && PyString_Check(s)) { |
|
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Merged revisions 53952-54987 via svnmerge from
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changeset
|
3302 PyString_ConcatAndDel(&v, s); |
|
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changeset
|
3303 if (v == NULL) |
|
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changeset
|
3304 goto onError; |
|
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changeset
|
3305 } |
|
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changeset
|
3306 else { |
|
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changeset
|
3307 PyObject *temp = PyUnicode_Concat(v, s); |
|
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changeset
|
3308 Py_DECREF(s); |
|
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changeset
|
3309 Py_DECREF(v); |
|
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changeset
|
3310 v = temp; |
|
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changeset
|
3311 if (v == NULL) |
|
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changeset
|
3312 goto onError; |
|
06145fbc7ab9
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diff
changeset
|
3313 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3314 } |
|
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changeset
|
3315 } |
|
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changeset
|
3316 return v; |
| 35742 | 3317 |
|
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changeset
|
3318 onError: |
|
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changeset
|
3319 Py_XDECREF(v); |
|
06145fbc7ab9
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changeset
|
3320 return NULL; |
| 35742 | 3321 } |