Mercurial > cpython-lru_cache-weakref
annotate Python/ast.c @ 58664:993f703a61ba
Merged revisions 77484,77487,77561,77570,77593,77603,77608,77667,77702-77703,77739,77858,77887,77889 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r77484 | skip.montanaro | 2010-01-13 19:12:34 -0600 (Wed, 13 Jan 2010) | 4 lines
Update PyEval_EvalFrame to PyEval_EvalFrameEx. This looks to have been done
partially before. Also add a comment describing how this might have to work
with different versions of the interpreter.
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r77487 | ezio.melotti | 2010-01-14 05:34:10 -0600 (Thu, 14 Jan 2010) | 1 line
Fixed typo
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r77561 | georg.brandl | 2010-01-17 02:42:30 -0600 (Sun, 17 Jan 2010) | 1 line
#7699: improve datetime docs: straightforward linking to strftime/strptime section, mark classmethods as such.
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r77570 | georg.brandl | 2010-01-17 06:14:42 -0600 (Sun, 17 Jan 2010) | 1 line
Add note about usage of STRINGLIB_EMPTY.
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r77593 | georg.brandl | 2010-01-17 17:33:53 -0600 (Sun, 17 Jan 2010) | 1 line
Fix internal reference.
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r77603 | benjamin.peterson | 2010-01-18 17:07:56 -0600 (Mon, 18 Jan 2010) | 8 lines
data descriptors do not override the class dictionary if __get__ is not defined
Adjust documentation and add a test to verify this behavior.
See http://mail.python.org/pipermail/python-dev/2010-January/095637.html for
discussion.
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r77608 | gregory.p.smith | 2010-01-19 02:19:03 -0600 (Tue, 19 Jan 2010) | 6 lines
Do not compile stubs for the sha2 series hashes in the openssl hashlib
module when the openssl version is too old to support them. That
leads both compiled code bloat and to unittests attempting to test
implementations that don't exist for comparison purposes on such
platforms.
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r77667 | mark.dickinson | 2010-01-21 12:32:27 -0600 (Thu, 21 Jan 2010) | 1 line
Add two more test_strtod test values.
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r77702 | georg.brandl | 2010-01-23 02:43:31 -0600 (Sat, 23 Jan 2010) | 1 line
#7762: fix refcount annotation of PyUnicode_Tailmatch().
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r77703 | georg.brandl | 2010-01-23 02:47:54 -0600 (Sat, 23 Jan 2010) | 1 line
#7725: fix referencing issue.
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r77739 | benjamin.peterson | 2010-01-24 21:52:52 -0600 (Sun, 24 Jan 2010) | 1 line
mention from_float() in error message
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r77858 | georg.brandl | 2010-01-30 11:57:48 -0600 (Sat, 30 Jan 2010) | 1 line
#7802: fix invalid example (heh).
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r77887 | georg.brandl | 2010-01-31 12:51:49 -0600 (Sun, 31 Jan 2010) | 5 lines
Fix-up ftplib documentation:
move exception descriptions to toplevel, not inside a class
remove attribution in "versionadded"
spell and grammar check docstring of FTP_TLS
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r77889 | michael.foord | 2010-01-31 13:59:26 -0600 (Sun, 31 Jan 2010) | 1 line
Minor modification to unittest documentation.
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| author | Benjamin Peterson <benjamin@python.org> |
|---|---|
| date | Wed, 03 Feb 2010 02:35:45 +0000 |
| parents | db4dfdc74029 |
| children | cab14be0ada1 |
| rev | line source |
|---|---|
| 35742 | 1 /* |
| 2 * This file includes functions to transform a concrete syntax tree (CST) to | |
| 3 * an abstract syntax tree (AST). The main function is PyAST_FromNode(). | |
| 4 * | |
| 5 */ | |
| 6 #include "Python.h" | |
| 7 #include "Python-ast.h" | |
| 8 #include "grammar.h" | |
| 9 #include "node.h" | |
|
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10 #include "pyarena.h" |
| 35742 | 11 #include "ast.h" |
| 12 #include "token.h" | |
| 13 #include "parsetok.h" | |
| 14 #include "graminit.h" | |
| 15 | |
| 16 #include <assert.h> | |
| 17 | |
| 18 /* Data structure used internally */ | |
| 19 struct compiling { | |
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20 char *c_encoding; /* source encoding */ |
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21 PyArena *c_arena; /* arena for allocating memeory */ |
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22 const char *c_filename; /* filename */ |
| 35742 | 23 }; |
| 24 | |
| 25 static asdl_seq *seq_for_testlist(struct compiling *, const node *); | |
| 26 static expr_ty ast_for_expr(struct compiling *, const node *); | |
| 27 static stmt_ty ast_for_stmt(struct compiling *, const node *); | |
| 28 static asdl_seq *ast_for_suite(struct compiling *, const node *); | |
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29 static asdl_seq *ast_for_exprlist(struct compiling *, const node *, |
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30 expr_context_ty); |
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31 static expr_ty ast_for_testlist(struct compiling *, const node *); |
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32 static stmt_ty ast_for_classdef(struct compiling *, const node *, asdl_seq *); |
| 35742 | 33 |
| 34 /* Note different signature for ast_for_call */ | |
| 35 static expr_ty ast_for_call(struct compiling *, const node *, expr_ty); | |
| 36 | |
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37 static PyObject *parsenumber(struct compiling *, const char *); |
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38 static PyObject *parsestr(struct compiling *, const node *n, int *bytesmode); |
| 40894 | 39 static PyObject *parsestrplus(struct compiling *, const node *n, |
| 40 int *bytesmode); | |
| 35742 | 41 |
| 42 #ifndef LINENO | |
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43 #define LINENO(n) ((n)->n_lineno) |
| 35742 | 44 #endif |
| 45 | |
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46 #define COMP_GENEXP 0 |
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47 #define COMP_LISTCOMP 1 |
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48 #define COMP_SETCOMP 2 |
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49 |
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50 static identifier |
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51 new_identifier(const char* n, PyArena *arena) |
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52 { |
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53 PyObject* id = PyUnicode_DecodeUTF8(n, strlen(n), NULL); |
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54 Py_UNICODE *u; |
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55 if (!id) |
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56 return NULL; |
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57 u = PyUnicode_AS_UNICODE(id); |
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58 /* Check whether there are non-ASCII characters in the |
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59 identifier; if so, normalize to NFKC. */ |
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60 for (; *u; u++) { |
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61 if (*u >= 128) { |
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62 PyObject *m = PyImport_ImportModuleNoBlock("unicodedata"); |
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63 PyObject *id2; |
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64 if (!m) |
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65 return NULL; |
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66 id2 = PyObject_CallMethod(m, "normalize", "sO", "NFKC", id); |
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67 Py_DECREF(m); |
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68 if (!id2) |
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69 return NULL; |
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70 Py_DECREF(id); |
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71 id = id2; |
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72 break; |
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73 } |
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74 } |
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75 PyUnicode_InternInPlace(&id); |
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76 PyArena_AddPyObject(arena, id); |
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77 return id; |
| 35742 | 78 } |
| 79 | |
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80 #define NEW_IDENTIFIER(n) new_identifier(STR(n), c->c_arena) |
| 35742 | 81 |
| 82 /* This routine provides an invalid object for the syntax error. | |
| 83 The outermost routine must unpack this error and create the | |
| 84 proper object. We do this so that we don't have to pass | |
| 85 the filename to everything function. | |
| 86 | |
| 87 XXX Maybe we should just pass the filename... | |
| 88 */ | |
| 89 | |
| 90 static int | |
| 91 ast_error(const node *n, const char *errstr) | |
| 92 { | |
| 93 PyObject *u = Py_BuildValue("zi", errstr, LINENO(n)); | |
| 94 if (!u) | |
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95 return 0; |
| 35742 | 96 PyErr_SetObject(PyExc_SyntaxError, u); |
| 97 Py_DECREF(u); | |
| 98 return 0; | |
| 99 } | |
| 100 | |
| 101 static void | |
| 102 ast_error_finish(const char *filename) | |
| 103 { | |
| 104 PyObject *type, *value, *tback, *errstr, *loc, *tmp; | |
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105 long lineno; |
| 35742 | 106 |
| 107 assert(PyErr_Occurred()); | |
| 108 if (!PyErr_ExceptionMatches(PyExc_SyntaxError)) | |
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109 return; |
| 35742 | 110 |
| 111 PyErr_Fetch(&type, &value, &tback); | |
| 112 errstr = PyTuple_GetItem(value, 0); | |
| 113 if (!errstr) | |
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114 return; |
| 35742 | 115 Py_INCREF(errstr); |
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116 lineno = PyLong_AsLong(PyTuple_GetItem(value, 1)); |
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117 if (lineno == -1) { |
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118 Py_DECREF(errstr); |
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119 return; |
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120 } |
| 35742 | 121 Py_DECREF(value); |
| 122 | |
| 123 loc = PyErr_ProgramText(filename, lineno); | |
| 124 if (!loc) { | |
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125 Py_INCREF(Py_None); |
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126 loc = Py_None; |
| 35742 | 127 } |
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128 tmp = Py_BuildValue("(zlOO)", filename, lineno, Py_None, loc); |
| 35742 | 129 Py_DECREF(loc); |
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130 if (!tmp) { |
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131 Py_DECREF(errstr); |
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132 return; |
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133 } |
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134 value = PyTuple_Pack(2, errstr, tmp); |
| 35742 | 135 Py_DECREF(errstr); |
| 136 Py_DECREF(tmp); | |
| 137 if (!value) | |
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138 return; |
| 35742 | 139 PyErr_Restore(type, value, tback); |
| 140 } | |
| 141 | |
| 142 /* num_stmts() returns number of contained statements. | |
| 143 | |
| 144 Use this routine to determine how big a sequence is needed for | |
| 145 the statements in a parse tree. Its raison d'etre is this bit of | |
| 146 grammar: | |
| 147 | |
| 148 stmt: simple_stmt | compound_stmt | |
| 149 simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE | |
| 150 | |
| 151 A simple_stmt can contain multiple small_stmt elements joined | |
| 152 by semicolons. If the arg is a simple_stmt, the number of | |
| 153 small_stmt elements is returned. | |
| 154 */ | |
| 155 | |
| 156 static int | |
| 157 num_stmts(const node *n) | |
| 158 { | |
| 159 int i, l; | |
| 160 node *ch; | |
| 161 | |
| 162 switch (TYPE(n)) { | |
| 163 case single_input: | |
| 164 if (TYPE(CHILD(n, 0)) == NEWLINE) | |
| 165 return 0; | |
| 166 else | |
| 167 return num_stmts(CHILD(n, 0)); | |
| 168 case file_input: | |
| 169 l = 0; | |
| 170 for (i = 0; i < NCH(n); i++) { | |
| 171 ch = CHILD(n, i); | |
| 172 if (TYPE(ch) == stmt) | |
| 173 l += num_stmts(ch); | |
| 174 } | |
| 175 return l; | |
| 176 case stmt: | |
| 177 return num_stmts(CHILD(n, 0)); | |
| 178 case compound_stmt: | |
| 179 return 1; | |
| 180 case simple_stmt: | |
| 181 return NCH(n) / 2; /* Divide by 2 to remove count of semi-colons */ | |
| 182 case suite: | |
| 183 if (NCH(n) == 1) | |
| 184 return num_stmts(CHILD(n, 0)); | |
| 185 else { | |
| 186 l = 0; | |
| 187 for (i = 2; i < (NCH(n) - 1); i++) | |
| 188 l += num_stmts(CHILD(n, i)); | |
| 189 return l; | |
| 190 } | |
| 191 default: { | |
| 192 char buf[128]; | |
| 193 | |
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194 sprintf(buf, "Non-statement found: %d %d", |
| 35742 | 195 TYPE(n), NCH(n)); |
| 196 Py_FatalError(buf); | |
| 197 } | |
| 198 } | |
| 199 assert(0); | |
| 200 return 0; | |
| 201 } | |
| 202 | |
| 203 /* Transform the CST rooted at node * to the appropriate AST | |
| 204 */ | |
| 205 | |
| 206 mod_ty | |
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207 PyAST_FromNode(const node *n, PyCompilerFlags *flags, const char *filename, |
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208 PyArena *arena) |
| 35742 | 209 { |
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210 int i, j, k, num; |
| 35742 | 211 asdl_seq *stmts = NULL; |
| 212 stmt_ty s; | |
| 213 node *ch; | |
| 214 struct compiling c; | |
| 215 | |
| 216 if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { | |
|
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217 c.c_encoding = "utf-8"; |
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218 if (TYPE(n) == encoding_decl) { |
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219 #if 0 |
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220 ast_error(n, "encoding declaration in Unicode string"); |
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221 goto error; |
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222 #endif |
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223 n = CHILD(n, 0); |
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224 } |
| 35742 | 225 } else if (TYPE(n) == encoding_decl) { |
| 226 c.c_encoding = STR(n); | |
| 227 n = CHILD(n, 0); | |
| 228 } else { | |
| 42403 | 229 /* PEP 3120 */ |
| 230 c.c_encoding = "utf-8"; | |
| 35742 | 231 } |
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232 c.c_arena = arena; |
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233 c.c_filename = filename; |
| 35742 | 234 |
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235 k = 0; |
| 35742 | 236 switch (TYPE(n)) { |
| 237 case file_input: | |
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238 stmts = asdl_seq_new(num_stmts(n), arena); |
| 35742 | 239 if (!stmts) |
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240 return NULL; |
| 35742 | 241 for (i = 0; i < NCH(n) - 1; i++) { |
| 242 ch = CHILD(n, i); | |
| 243 if (TYPE(ch) == NEWLINE) | |
| 244 continue; | |
| 245 REQ(ch, stmt); | |
| 246 num = num_stmts(ch); | |
| 247 if (num == 1) { | |
| 248 s = ast_for_stmt(&c, ch); | |
| 249 if (!s) | |
| 250 goto error; | |
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251 asdl_seq_SET(stmts, k++, s); |
| 35742 | 252 } |
| 253 else { | |
| 254 ch = CHILD(ch, 0); | |
| 255 REQ(ch, simple_stmt); | |
| 256 for (j = 0; j < num; j++) { | |
| 257 s = ast_for_stmt(&c, CHILD(ch, j * 2)); | |
| 258 if (!s) | |
| 259 goto error; | |
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260 asdl_seq_SET(stmts, k++, s); |
| 35742 | 261 } |
| 262 } | |
| 263 } | |
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264 return Module(stmts, arena); |
| 35742 | 265 case eval_input: { |
| 266 expr_ty testlist_ast; | |
| 267 | |
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268 /* XXX Why not comp_for here? */ |
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269 testlist_ast = ast_for_testlist(&c, CHILD(n, 0)); |
| 35742 | 270 if (!testlist_ast) |
| 271 goto error; | |
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272 return Expression(testlist_ast, arena); |
| 35742 | 273 } |
| 274 case single_input: | |
| 275 if (TYPE(CHILD(n, 0)) == NEWLINE) { | |
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276 stmts = asdl_seq_new(1, arena); |
| 35742 | 277 if (!stmts) |
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278 goto error; |
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279 asdl_seq_SET(stmts, 0, Pass(n->n_lineno, n->n_col_offset, |
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280 arena)); |
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281 if (!asdl_seq_GET(stmts, 0)) |
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282 goto error; |
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283 return Interactive(stmts, arena); |
| 35742 | 284 } |
| 285 else { | |
| 286 n = CHILD(n, 0); | |
| 287 num = num_stmts(n); | |
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288 stmts = asdl_seq_new(num, arena); |
| 35742 | 289 if (!stmts) |
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290 goto error; |
| 35742 | 291 if (num == 1) { |
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292 s = ast_for_stmt(&c, n); |
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293 if (!s) |
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294 goto error; |
| 35742 | 295 asdl_seq_SET(stmts, 0, s); |
| 296 } | |
| 297 else { | |
| 298 /* Only a simple_stmt can contain multiple statements. */ | |
| 299 REQ(n, simple_stmt); | |
| 300 for (i = 0; i < NCH(n); i += 2) { | |
| 301 if (TYPE(CHILD(n, i)) == NEWLINE) | |
| 302 break; | |
| 303 s = ast_for_stmt(&c, CHILD(n, i)); | |
| 304 if (!s) | |
| 305 goto error; | |
| 306 asdl_seq_SET(stmts, i / 2, s); | |
| 307 } | |
| 308 } | |
| 309 | |
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310 return Interactive(stmts, arena); |
| 35742 | 311 } |
| 312 default: | |
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313 PyErr_Format(PyExc_SystemError, |
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314 "invalid node %d for PyAST_FromNode", TYPE(n)); |
| 35742 | 315 goto error; |
| 316 } | |
| 317 error: | |
| 318 ast_error_finish(filename); | |
| 319 return NULL; | |
| 320 } | |
| 321 | |
| 322 /* Return the AST repr. of the operator represented as syntax (|, ^, etc.) | |
| 323 */ | |
| 324 | |
| 325 static operator_ty | |
| 326 get_operator(const node *n) | |
| 327 { | |
| 328 switch (TYPE(n)) { | |
| 329 case VBAR: | |
| 330 return BitOr; | |
| 331 case CIRCUMFLEX: | |
| 332 return BitXor; | |
| 333 case AMPER: | |
| 334 return BitAnd; | |
| 335 case LEFTSHIFT: | |
| 336 return LShift; | |
| 337 case RIGHTSHIFT: | |
| 338 return RShift; | |
| 339 case PLUS: | |
| 340 return Add; | |
| 341 case MINUS: | |
| 342 return Sub; | |
| 343 case STAR: | |
| 344 return Mult; | |
| 345 case SLASH: | |
| 346 return Div; | |
| 347 case DOUBLESLASH: | |
| 348 return FloorDiv; | |
| 349 case PERCENT: | |
| 350 return Mod; | |
| 351 default: | |
|
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352 return (operator_ty)0; |
| 35742 | 353 } |
| 354 } | |
| 355 | |
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356 static const char* FORBIDDEN[] = { |
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357 "None", |
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358 "True", |
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359 "False", |
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360 NULL, |
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361 }; |
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362 |
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363 static int |
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364 forbidden_name(identifier name, const node *n, int full_checks) |
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365 { |
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366 assert(PyUnicode_Check(name)); |
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367 if (PyUnicode_CompareWithASCIIString(name, "__debug__") == 0) { |
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368 ast_error(n, "assignment to keyword"); |
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369 return 1; |
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370 } |
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371 if (full_checks) { |
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372 const char **p; |
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373 for (p = FORBIDDEN; *p; p++) { |
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374 if (PyUnicode_CompareWithASCIIString(name, *p) == 0) { |
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375 ast_error(n, "assignment to keyword"); |
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376 return 1; |
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377 } |
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378 } |
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379 } |
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380 return 0; |
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381 } |
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382 |
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383 /* Set the context ctx for expr_ty e, recursively traversing e. |
| 35742 | 384 |
| 385 Only sets context for expr kinds that "can appear in assignment context" | |
| 386 (according to ../Parser/Python.asdl). For other expr kinds, it sets | |
| 387 an appropriate syntax error and returns false. | |
| 388 */ | |
| 389 | |
| 390 static int | |
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391 set_context(struct compiling *c, expr_ty e, expr_context_ty ctx, const node *n) |
| 35742 | 392 { |
| 393 asdl_seq *s = NULL; | |
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394 /* If a particular expression type can't be used for assign / delete, |
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395 set expr_name to its name and an error message will be generated. |
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396 */ |
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397 const char* expr_name = NULL; |
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398 |
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399 /* The ast defines augmented store and load contexts, but the |
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400 implementation here doesn't actually use them. The code may be |
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401 a little more complex than necessary as a result. It also means |
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402 that expressions in an augmented assignment have a Store context. |
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403 Consider restructuring so that augmented assignment uses |
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404 set_context(), too. |
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405 */ |
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406 assert(ctx != AugStore && ctx != AugLoad); |
| 35742 | 407 |
| 408 switch (e->kind) { | |
| 409 case Attribute_kind: | |
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410 e->v.Attribute.ctx = ctx; |
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411 if (ctx == Store && forbidden_name(e->v.Attribute.attr, n, 1)) |
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412 return 0; |
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413 break; |
| 35742 | 414 case Subscript_kind: |
|
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415 e->v.Subscript.ctx = ctx; |
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417 case Starred_kind: |
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418 e->v.Starred.ctx = ctx; |
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419 if (!set_context(c, e->v.Starred.value, ctx, n)) |
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420 return 0; |
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423 if (ctx == Store) { |
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424 if (forbidden_name(e->v.Name.id, n, 1)) |
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425 return 0; /* forbidden_name() calls ast_error() */ |
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426 } |
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427 e->v.Name.ctx = ctx; |
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430 e->v.List.ctx = ctx; |
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431 s = e->v.List.elts; |
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434 if (asdl_seq_LEN(e->v.Tuple.elts)) { |
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435 e->v.Tuple.ctx = ctx; |
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436 s = e->v.Tuple.elts; |
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437 } |
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438 else { |
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439 expr_name = "()"; |
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440 } |
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442 case Lambda_kind: |
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443 expr_name = "lambda"; |
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444 break; |
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446 expr_name = "function call"; |
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448 case BoolOp_kind: |
| 35742 | 449 case BinOp_kind: |
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450 case UnaryOp_kind: |
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451 expr_name = "operator"; |
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452 break; |
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454 expr_name = "generator expression"; |
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456 case Yield_kind: |
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457 expr_name = "yield expression"; |
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458 break; |
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459 case ListComp_kind: |
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460 expr_name = "list comprehension"; |
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461 break; |
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462 case SetComp_kind: |
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463 expr_name = "set comprehension"; |
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464 break; |
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465 case DictComp_kind: |
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466 expr_name = "dict comprehension"; |
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468 case Dict_kind: |
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469 case Set_kind: |
| 35742 | 470 case Num_kind: |
| 471 case Str_kind: | |
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472 expr_name = "literal"; |
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473 break; |
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474 case Ellipsis_kind: |
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475 expr_name = "Ellipsis"; |
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476 break; |
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477 case Compare_kind: |
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478 expr_name = "comparison"; |
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479 break; |
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480 case IfExp_kind: |
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481 expr_name = "conditional expression"; |
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482 break; |
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483 default: |
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484 PyErr_Format(PyExc_SystemError, |
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485 "unexpected expression in assignment %d (line %d)", |
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486 e->kind, e->lineno); |
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487 return 0; |
| 35742 | 488 } |
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489 /* Check for error string set by switch */ |
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490 if (expr_name) { |
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491 char buf[300]; |
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492 PyOS_snprintf(buf, sizeof(buf), |
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493 "can't %s %s", |
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494 ctx == Store ? "assign to" : "delete", |
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495 expr_name); |
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496 return ast_error(n, buf); |
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497 } |
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498 |
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500 context for all the contained elements. |
| 35742 | 501 */ |
| 502 if (s) { | |
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503 int i; |
| 35742 | 504 |
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505 for (i = 0; i < asdl_seq_LEN(s); i++) { |
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506 if (!set_context(c, (expr_ty)asdl_seq_GET(s, i), ctx, n)) |
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507 return 0; |
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508 } |
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| 510 return 1; | |
| 511 } | |
| 512 | |
| 513 static operator_ty | |
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514 ast_for_augassign(struct compiling *c, const node *n) |
| 35742 | 515 { |
| 516 REQ(n, augassign); | |
| 517 n = CHILD(n, 0); | |
| 518 switch (STR(n)[0]) { | |
| 519 case '+': | |
| 520 return Add; | |
| 521 case '-': | |
| 522 return Sub; | |
| 523 case '/': | |
| 524 if (STR(n)[1] == '/') | |
| 525 return FloorDiv; | |
| 526 else | |
| 527 return Div; | |
| 528 case '%': | |
| 529 return Mod; | |
| 530 case '<': | |
| 531 return LShift; | |
| 532 case '>': | |
| 533 return RShift; | |
| 534 case '&': | |
| 535 return BitAnd; | |
| 536 case '^': | |
| 537 return BitXor; | |
| 538 case '|': | |
| 539 return BitOr; | |
| 540 case '*': | |
| 541 if (STR(n)[1] == '*') | |
| 542 return Pow; | |
| 543 else | |
| 544 return Mult; | |
| 545 default: | |
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546 PyErr_Format(PyExc_SystemError, "invalid augassign: %s", STR(n)); |
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547 return (operator_ty)0; |
| 35742 | 548 } |
| 549 } | |
| 550 | |
| 551 static cmpop_ty | |
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552 ast_for_comp_op(struct compiling *c, const node *n) |
| 35742 | 553 { |
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554 /* comp_op: '<'|'>'|'=='|'>='|'<='|'!='|'in'|'not' 'in'|'is' |
| 35742 | 555 |'is' 'not' |
| 556 */ | |
| 557 REQ(n, comp_op); | |
| 558 if (NCH(n) == 1) { | |
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559 n = CHILD(n, 0); |
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560 switch (TYPE(n)) { |
| 35742 | 561 case LESS: |
| 562 return Lt; | |
| 563 case GREATER: | |
| 564 return Gt; | |
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565 case EQEQUAL: /* == */ |
| 35742 | 566 return Eq; |
| 567 case LESSEQUAL: | |
| 568 return LtE; | |
| 569 case GREATEREQUAL: | |
| 570 return GtE; | |
| 571 case NOTEQUAL: | |
| 572 return NotEq; | |
| 573 case NAME: | |
| 574 if (strcmp(STR(n), "in") == 0) | |
| 575 return In; | |
| 576 if (strcmp(STR(n), "is") == 0) | |
| 577 return Is; | |
| 578 default: | |
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579 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s", |
| 35742 | 580 STR(n)); |
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581 return (cmpop_ty)0; |
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582 } |
| 35742 | 583 } |
| 584 else if (NCH(n) == 2) { | |
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585 /* handle "not in" and "is not" */ |
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586 switch (TYPE(CHILD(n, 0))) { |
| 35742 | 587 case NAME: |
| 588 if (strcmp(STR(CHILD(n, 1)), "in") == 0) | |
| 589 return NotIn; | |
| 590 if (strcmp(STR(CHILD(n, 0)), "is") == 0) | |
| 591 return IsNot; | |
| 592 default: | |
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593 PyErr_Format(PyExc_SystemError, "invalid comp_op: %s %s", |
| 35742 | 594 STR(CHILD(n, 0)), STR(CHILD(n, 1))); |
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595 return (cmpop_ty)0; |
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596 } |
| 35742 | 597 } |
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598 PyErr_Format(PyExc_SystemError, "invalid comp_op: has %d children", |
| 35742 | 599 NCH(n)); |
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600 return (cmpop_ty)0; |
| 35742 | 601 } |
| 602 | |
| 603 static asdl_seq * | |
| 604 seq_for_testlist(struct compiling *c, const node *n) | |
| 605 { | |
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606 /* testlist: test (',' test)* [','] |
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607 testlist_star_expr: test|star_expr (',' test|star_expr)* [','] |
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608 */ |
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609 asdl_seq *seq; |
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610 expr_ty expression; |
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611 int i; |
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612 assert(TYPE(n) == testlist || TYPE(n) == testlist_star_expr || TYPE(n) == testlist_comp); |
| 35742 | 613 |
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614 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 615 if (!seq) |
| 616 return NULL; | |
| 617 | |
| 618 for (i = 0; i < NCH(n); i += 2) { | |
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619 const node *ch = CHILD(n, i); |
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620 assert(TYPE(ch) == test || TYPE(ch) == test_nocond || TYPE(ch) == star_expr); |
| 35742 | 621 |
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622 expression = ast_for_expr(c, ch); |
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623 if (!expression) |
| 35742 | 624 return NULL; |
| 625 | |
| 626 assert(i / 2 < seq->size); | |
| 627 asdl_seq_SET(seq, i / 2, expression); | |
| 628 } | |
| 629 return seq; | |
| 630 } | |
| 631 | |
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632 static arg_ty |
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633 compiler_arg(struct compiling *c, const node *n) |
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634 { |
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635 identifier name; |
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636 expr_ty annotation = NULL; |
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637 node *ch; |
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638 |
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639 assert(TYPE(n) == tfpdef || TYPE(n) == vfpdef); |
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640 ch = CHILD(n, 0); |
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641 name = NEW_IDENTIFIER(ch); |
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642 if (!name) |
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643 return NULL; |
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644 if (forbidden_name(name, ch, 0)) |
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645 return NULL; |
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646 |
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647 if (NCH(n) == 3 && TYPE(CHILD(n, 1)) == COLON) { |
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648 annotation = ast_for_expr(c, CHILD(n, 2)); |
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649 if (!annotation) |
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650 return NULL; |
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651 } |
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652 |
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653 return arg(name, annotation, c->c_arena); |
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654 #if 0 |
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655 result = Tuple(args, Store, LINENO(n), n->n_col_offset, c->c_arena); |
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656 if (!set_context(c, result, Store, n)) |
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657 return NULL; |
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658 return result; |
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659 #endif |
| 35742 | 660 } |
| 661 | |
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662 /* returns -1 if failed to handle keyword only arguments |
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663 returns new position to keep processing if successful |
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664 (',' tfpdef ['=' test])* |
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665 ^^^ |
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666 start pointing here |
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667 */ |
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668 static int |
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669 handle_keywordonly_args(struct compiling *c, const node *n, int start, |
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670 asdl_seq *kwonlyargs, asdl_seq *kwdefaults) |
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671 { |
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672 PyObject *argname; |
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673 node *ch; |
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674 expr_ty expression, annotation; |
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675 arg_ty arg; |
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676 int i = start; |
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677 int j = 0; /* index for kwdefaults and kwonlyargs */ |
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678 |
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679 if (kwonlyargs == NULL) { |
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680 ast_error(CHILD(n, start), "named arguments must follow bare *"); |
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681 return -1; |
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682 } |
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683 assert(kwdefaults != NULL); |
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684 while (i < NCH(n)) { |
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685 ch = CHILD(n, i); |
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686 switch (TYPE(ch)) { |
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687 case vfpdef: |
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688 case tfpdef: |
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689 if (i + 1 < NCH(n) && TYPE(CHILD(n, i + 1)) == EQUAL) { |
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690 expression = ast_for_expr(c, CHILD(n, i + 2)); |
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691 asdl_seq_SET(kwdefaults, j, expression); |
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692 i += 2; /* '=' and test */ |
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693 } |
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diff
changeset
|
694 else { /* setting NULL if no default value exists */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
695 asdl_seq_SET(kwdefaults, j, NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
696 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
697 if (NCH(ch) == 3) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
698 /* ch is NAME ':' test */ |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
699 annotation = ast_for_expr(c, CHILD(ch, 2)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
700 if (!annotation) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
701 ast_error(ch, "expected expression"); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
702 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
703 } |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
704 } |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
705 else { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
706 annotation = NULL; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
707 } |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
708 ch = CHILD(ch, 0); |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
709 argname = NEW_IDENTIFIER(ch); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
710 if (!argname) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
711 goto error; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
712 if (forbidden_name(argname, ch, 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
713 goto error; |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
714 arg = arg(argname, annotation, c->c_arena); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
715 if (!arg) |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
716 goto error; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
717 asdl_seq_SET(kwonlyargs, j++, arg); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
718 i += 2; /* the name and the comma */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
719 break; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
720 case DOUBLESTAR: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
721 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
722 default: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
723 ast_error(ch, "unexpected node"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
724 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
725 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
726 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
727 return i; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
728 error: |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
729 return -1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
730 } |
| 35742 | 731 |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
732 /* Create AST for argument list. */ |
| 35742 | 733 |
| 734 static arguments_ty | |
| 735 ast_for_arguments(struct compiling *c, const node *n) | |
| 736 { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
737 /* This function handles both typedargslist (function definition) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
738 and varargslist (lambda definition). |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
739 |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
740 parameters: '(' [typedargslist] ')' |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
741 typedargslist: ((tfpdef ['=' test] ',')* |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
742 ('*' [tfpdef] (',' tfpdef ['=' test])* [',' '**' tfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
743 | '**' tfpdef) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
744 | tfpdef ['=' test] (',' tfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
745 tfpdef: NAME [':' test] |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
746 varargslist: ((vfpdef ['=' test] ',')* |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
747 ('*' [vfpdef] (',' vfpdef ['=' test])* [',' '**' vfpdef] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
748 | '**' vfpdef) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
749 | vfpdef ['=' test] (',' vfpdef ['=' test])* [',']) |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
750 vfpdef: NAME |
| 35742 | 751 */ |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
752 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
|
753 int nposdefaults = 0, found_default = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
754 asdl_seq *posargs, *posdefaults, *kwonlyargs, *kwdefaults; |
| 35742 | 755 identifier vararg = NULL, kwarg = NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
756 arg_ty arg; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
757 expr_ty varargannotation = NULL, kwargannotation = NULL; |
| 35742 | 758 node *ch; |
| 759 | |
| 760 if (TYPE(n) == parameters) { | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
761 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
|
762 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
|
763 NULL, c->c_arena); |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
764 n = CHILD(n, 1); |
| 35742 | 765 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
766 assert(TYPE(n) == typedargslist || TYPE(n) == varargslist); |
| 35742 | 767 |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
768 /* First count the number of positional args & defaults. The |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
769 variable i is the loop index for this for loop and the next. |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
770 The next loop picks up where the first leaves off. |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
771 */ |
| 35742 | 772 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
|
773 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
774 if (TYPE(ch) == STAR) { |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
775 /* skip star */ |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
776 i++; |
|
48515
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
777 if (i < NCH(n) && /* skip argument following star */ |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
778 (TYPE(CHILD(n, i)) == tfpdef || |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
779 TYPE(CHILD(n, i)) == vfpdef)) { |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
780 i++; |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
781 } |
|
dbc2b7ad0c22
Fix uninitialized memory read for cases like def(f, *): pass
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
48397
diff
changeset
|
782 break; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
783 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
784 if (TYPE(ch) == DOUBLESTAR) break; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
785 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
|
786 if (TYPE(ch) == EQUAL) nposdefaults++; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
787 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
788 /* count the number of keyword only args & |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
789 defaults for keyword only args */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
790 for ( ; i < NCH(n); ++i) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
791 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
792 if (TYPE(ch) == DOUBLESTAR) break; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
793 if (TYPE(ch) == tfpdef || TYPE(ch) == vfpdef) nkwonlyargs++; |
| 35742 | 794 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
795 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
|
796 if (!posargs && nposargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
797 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
798 kwonlyargs = (nkwonlyargs ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
799 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
|
800 if (!kwonlyargs && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
801 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
802 posdefaults = (nposdefaults ? |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
803 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
|
804 if (!posdefaults && nposdefaults) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
805 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
806 /* 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
|
807 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
|
808 - 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
|
809 kwdefaults = (nkwonlyargs ? |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
810 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
|
811 if (!kwdefaults && nkwonlyargs) |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
812 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
813 |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
814 if (nposargs + nkwonlyargs > 255) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
815 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
|
816 return NULL; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
817 } |
| 35742 | 818 |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
819 /* tfpdef: NAME [':' test] |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
820 vfpdef: NAME |
| 35742 | 821 */ |
| 822 i = 0; | |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
823 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
|
824 k = 0; /* index for args */ |
| 35742 | 825 while (i < NCH(n)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
826 ch = CHILD(n, i); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
827 switch (TYPE(ch)) { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
828 case tfpdef: |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
829 case vfpdef: |
| 35742 | 830 /* XXX Need to worry about checking if TYPE(CHILD(n, i+1)) is |
| 831 anything other than EQUAL or a comma? */ | |
| 832 /* XXX Should NCH(n) check be made a separate check? */ | |
| 833 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
|
834 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
|
835 if (!expression) |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
836 goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
837 assert(posdefaults != NULL); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
838 asdl_seq_SET(posdefaults, j++, expression); |
| 35742 | 839 i += 2; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
840 found_default = 1; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
841 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
842 else if (found_default) { |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
843 ast_error(n, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
844 "non-default argument follows default argument"); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
845 goto error; |
| 35742 | 846 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
847 arg = compiler_arg(c, ch); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
848 if (!arg) |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
849 goto error; |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
850 asdl_seq_SET(posargs, k++, arg); |
| 35742 | 851 i += 2; /* the name and the comma */ |
| 852 break; | |
| 853 case STAR: | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
854 if (i+1 >= NCH(n)) { |
|
44246
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
855 ast_error(CHILD(n, i), |
|
aac33ee1a8fc
Issue #1573, second attempt:
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents:
44237
diff
changeset
|
856 "named arguments must follow bare *"); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
857 goto error; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
858 } |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
859 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
|
860 if (TYPE(ch) == COMMA) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
861 int res = 0; |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
862 i += 2; /* now follows keyword only arguments */ |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
863 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
864 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
865 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
866 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
|
867 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
868 else { |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
869 vararg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
49844
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
870 if (!vararg) |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
871 return NULL; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
872 if (forbidden_name(vararg, CHILD(ch, 0), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
873 return NULL; |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
874 if (NCH(ch) > 1) { |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
875 /* 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
|
876 varargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
877 } |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
878 i += 3; |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
879 if (i < NCH(n) && (TYPE(CHILD(n, i)) == tfpdef |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
880 || TYPE(CHILD(n, i)) == vfpdef)) { |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
881 int res = 0; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
882 res = handle_keywordonly_args(c, n, i, |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
883 kwonlyargs, kwdefaults); |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
884 if (res == -1) goto error; |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
885 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
|
886 } |
|
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
887 } |
| 35742 | 888 break; |
| 889 case DOUBLESTAR: | |
|
41717
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
890 ch = CHILD(n, i+1); /* tfpdef */ |
|
9ad84070b22d
Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41716
diff
changeset
|
891 assert(TYPE(ch) == tfpdef || TYPE(ch) == vfpdef); |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
892 kwarg = NEW_IDENTIFIER(CHILD(ch, 0)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
893 if (NCH(ch) > 1) { |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
894 /* there is an annotation on the kwarg */ |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
895 kwargannotation = ast_for_expr(c, CHILD(ch, 2)); |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
896 } |
|
49844
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
897 if (!kwarg) |
|
40b7277e665f
Merged revisions 67373 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
49797
diff
changeset
|
898 goto error; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
899 if (forbidden_name(kwarg, CHILD(ch, 0), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
900 goto error; |
| 35742 | 901 i += 3; |
| 902 break; | |
| 903 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
904 PyErr_Format(PyExc_SystemError, |
| 35742 | 905 "unexpected node in varargslist: %d @ %d", |
| 906 TYPE(ch), i); | |
| 907 goto error; | |
|
40215
1cce0526d9b0
Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents:
39783
diff
changeset
|
908 } |
| 35742 | 909 } |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
910 return arguments(posargs, vararg, varargannotation, kwonlyargs, kwarg, |
|
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
911 kwargannotation, posdefaults, kwdefaults, c->c_arena); |
| 35742 | 912 error: |
|
35873
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
913 Py_XDECREF(vararg); |
|
76ed7fdc9d85
Fix a whole bunch of potential memory leaks (and some real ones too)
Neal Norwitz <nnorwitz@gmail.com>
parents:
35870
diff
changeset
|
914 Py_XDECREF(kwarg); |
| 35742 | 915 return NULL; |
| 916 } | |
| 917 | |
| 918 static expr_ty | |
| 919 ast_for_dotted_name(struct compiling *c, const node *n) | |
| 920 { | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
921 expr_ty e; |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
922 identifier id; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
923 int lineno, col_offset; |
| 35742 | 924 int i; |
| 925 | |
| 926 REQ(n, dotted_name); | |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
927 |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
928 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
929 col_offset = n->n_col_offset; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
930 |
| 35742 | 931 id = NEW_IDENTIFIER(CHILD(n, 0)); |
| 932 if (!id) | |
|
36065
ea083efdc96c
Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
Neal Norwitz <nnorwitz@gmail.com>
parents:
36001
diff
changeset
|
933 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
934 e = Name(id, Load, lineno, col_offset, c->c_arena); |
| 35742 | 935 if (!e) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
936 return NULL; |
| 35742 | 937 |
| 938 for (i = 2; i < NCH(n); i+=2) { | |
| 939 id = NEW_IDENTIFIER(CHILD(n, i)); | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
940 if (!id) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
941 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
942 e = Attribute(e, id, Load, lineno, col_offset, c->c_arena); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
943 if (!e) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
944 return NULL; |
| 35742 | 945 } |
| 946 | |
| 947 return e; | |
| 948 } | |
| 949 | |
| 950 static expr_ty | |
| 951 ast_for_decorator(struct compiling *c, const node *n) | |
| 952 { | |
| 953 /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ | |
| 954 expr_ty d = NULL; | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
955 expr_ty name_expr; |
| 35742 | 956 |
| 957 REQ(n, decorator); | |
|
36418
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
958 REQ(CHILD(n, 0), AT); |
|
a625e8876407
Improved handling of syntax errors.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36242
diff
changeset
|
959 REQ(RCHILD(n, -1), NEWLINE); |
| 35742 | 960 |
| 961 name_expr = ast_for_dotted_name(c, CHILD(n, 1)); | |
| 962 if (!name_expr) | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
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963 return NULL; |
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964 |
| 35742 | 965 if (NCH(n) == 3) { /* No arguments */ |
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966 d = name_expr; |
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967 name_expr = NULL; |
| 35742 | 968 } |
| 969 else if (NCH(n) == 5) { /* Call with no arguments */ | |
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970 d = Call(name_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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971 n->n_col_offset, c->c_arena); |
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972 if (!d) |
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973 return NULL; |
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974 name_expr = NULL; |
| 35742 | 975 } |
| 976 else { | |
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977 d = ast_for_call(c, CHILD(n, 3), name_expr); |
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978 if (!d) |
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979 return NULL; |
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980 name_expr = NULL; |
| 35742 | 981 } |
| 982 | |
| 983 return d; | |
| 984 } | |
| 985 | |
| 986 static asdl_seq* | |
| 987 ast_for_decorators(struct compiling *c, const node *n) | |
| 988 { | |
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989 asdl_seq* decorator_seq; |
|
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990 expr_ty d; |
| 35742 | 991 int i; |
| 992 | |
| 993 REQ(n, decorators); | |
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994 decorator_seq = asdl_seq_new(NCH(n), c->c_arena); |
| 35742 | 995 if (!decorator_seq) |
| 996 return NULL; | |
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997 |
| 35742 | 998 for (i = 0; i < NCH(n); i++) { |
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999 d = ast_for_decorator(c, CHILD(n, i)); |
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1000 if (!d) |
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1001 return NULL; |
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1002 asdl_seq_SET(decorator_seq, i, d); |
| 35742 | 1003 } |
| 1004 return decorator_seq; | |
| 1005 } | |
| 1006 | |
| 1007 static stmt_ty | |
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1008 ast_for_funcdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 1009 { |
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1010 /* funcdef: 'def' NAME parameters ['->' test] ':' suite */ |
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1011 identifier name; |
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1012 arguments_ty args; |
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1013 asdl_seq *body; |
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1014 expr_ty returns = NULL; |
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1015 int name_i = 1; |
| 35742 | 1016 |
| 1017 REQ(n, funcdef); | |
| 1018 | |
| 1019 name = NEW_IDENTIFIER(CHILD(n, name_i)); | |
| 1020 if (!name) | |
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1021 return NULL; |
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1022 if (forbidden_name(name, CHILD(n, name_i), 0)) |
|
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1023 return NULL; |
| 35742 | 1024 args = ast_for_arguments(c, CHILD(n, name_i + 1)); |
| 1025 if (!args) | |
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1026 return NULL; |
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1027 if (TYPE(CHILD(n, name_i+2)) == RARROW) { |
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1028 returns = ast_for_expr(c, CHILD(n, name_i + 3)); |
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1029 if (!returns) |
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1030 return NULL; |
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1031 name_i += 2; |
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1032 } |
| 35742 | 1033 body = ast_for_suite(c, CHILD(n, name_i + 3)); |
| 1034 if (!body) | |
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1035 return NULL; |
| 35742 | 1036 |
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1037 return FunctionDef(name, args, body, decorator_seq, returns, LINENO(n), |
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1038 n->n_col_offset, c->c_arena); |
| 35742 | 1039 } |
| 1040 | |
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1041 static stmt_ty |
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1042 ast_for_decorated(struct compiling *c, const node *n) |
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1043 { |
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1044 /* decorated: decorators (classdef | funcdef) */ |
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1045 stmt_ty thing = NULL; |
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1046 asdl_seq *decorator_seq = NULL; |
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1047 |
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1048 REQ(n, decorated); |
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1049 |
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1050 decorator_seq = ast_for_decorators(c, CHILD(n, 0)); |
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1051 if (!decorator_seq) |
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1052 return NULL; |
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1053 |
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1054 assert(TYPE(CHILD(n, 1)) == funcdef || |
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1055 TYPE(CHILD(n, 1)) == classdef); |
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1056 |
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1057 if (TYPE(CHILD(n, 1)) == funcdef) { |
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1058 thing = ast_for_funcdef(c, CHILD(n, 1), decorator_seq); |
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1059 } else if (TYPE(CHILD(n, 1)) == classdef) { |
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1060 thing = ast_for_classdef(c, CHILD(n, 1), decorator_seq); |
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1061 } |
|
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1062 /* we count the decorators in when talking about the class' or |
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1063 * function's line number */ |
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1064 if (thing) { |
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1065 thing->lineno = LINENO(n); |
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1066 thing->col_offset = n->n_col_offset; |
|
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1067 } |
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1068 return thing; |
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1069 } |
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1070 |
| 35742 | 1071 static expr_ty |
| 1072 ast_for_lambdef(struct compiling *c, const node *n) | |
| 1073 { | |
|
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1074 /* lambdef: 'lambda' [varargslist] ':' test |
|
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1075 lambdef_nocond: 'lambda' [varargslist] ':' test_nocond */ |
| 35742 | 1076 arguments_ty args; |
| 1077 expr_ty expression; | |
| 1078 | |
| 1079 if (NCH(n) == 3) { | |
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1080 args = arguments(NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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1081 NULL, c->c_arena); |
| 35742 | 1082 if (!args) |
| 1083 return NULL; | |
| 1084 expression = ast_for_expr(c, CHILD(n, 2)); | |
|
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1085 if (!expression) |
| 35742 | 1086 return NULL; |
| 1087 } | |
| 1088 else { | |
| 1089 args = ast_for_arguments(c, CHILD(n, 1)); | |
| 1090 if (!args) | |
| 1091 return NULL; | |
| 1092 expression = ast_for_expr(c, CHILD(n, 3)); | |
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1093 if (!expression) |
| 35742 | 1094 return NULL; |
| 1095 } | |
| 1096 | |
|
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1097 return Lambda(args, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1098 } |
| 1099 | |
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1100 static expr_ty |
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1101 ast_for_ifexpr(struct compiling *c, const node *n) |
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1102 { |
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1103 /* test: or_test 'if' or_test 'else' test */ |
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1104 expr_ty expression, body, orelse; |
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1105 |
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1106 assert(NCH(n) == 5); |
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1107 body = ast_for_expr(c, CHILD(n, 0)); |
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1108 if (!body) |
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1109 return NULL; |
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1110 expression = ast_for_expr(c, CHILD(n, 2)); |
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1111 if (!expression) |
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1112 return NULL; |
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1113 orelse = ast_for_expr(c, CHILD(n, 4)); |
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1114 if (!orelse) |
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1115 return NULL; |
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1116 return IfExp(expression, body, orelse, LINENO(n), n->n_col_offset, |
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1117 c->c_arena); |
|
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|
1118 } |
|
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1119 |
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1120 /* |
|
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1121 Count the number of 'for' loops in a comprehension. |
| 35742 | 1122 |
|
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|
1123 Helper for ast_for_comprehension(). |
| 35742 | 1124 */ |
| 1125 | |
| 1126 static int | |
|
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1127 count_comp_fors(struct compiling *c, const node *n) |
| 35742 | 1128 { |
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1129 int n_fors = 0; |
| 35742 | 1130 |
|
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1131 count_comp_for: |
|
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1132 n_fors++; |
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1133 REQ(n, comp_for); |
|
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1134 if (NCH(n) == 5) |
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1135 n = CHILD(n, 4); |
|
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1136 else |
|
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1137 return n_fors; |
|
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|
1138 count_comp_iter: |
|
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1139 REQ(n, comp_iter); |
|
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1140 n = CHILD(n, 0); |
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1141 if (TYPE(n) == comp_for) |
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1142 goto count_comp_for; |
|
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1143 else if (TYPE(n) == comp_if) { |
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1144 if (NCH(n) == 3) { |
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1145 n = CHILD(n, 2); |
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1146 goto count_comp_iter; |
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1147 } |
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1148 else |
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1149 return n_fors; |
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1150 } |
|
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1151 |
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1152 /* Should never be reached */ |
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1153 PyErr_SetString(PyExc_SystemError, |
|
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1154 "logic error in count_comp_fors"); |
|
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1155 return -1; |
| 35742 | 1156 } |
| 1157 | |
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1158 /* Count the number of 'if' statements in a comprehension. |
| 35742 | 1159 |
|
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1160 Helper for ast_for_comprehension(). |
| 35742 | 1161 */ |
| 1162 | |
| 1163 static int | |
|
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1164 count_comp_ifs(struct compiling *c, const node *n) |
| 35742 | 1165 { |
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1166 int n_ifs = 0; |
| 35742 | 1167 |
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1168 while (1) { |
|
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1169 REQ(n, comp_iter); |
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1170 if (TYPE(CHILD(n, 0)) == comp_for) |
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1171 return n_ifs; |
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1172 n = CHILD(n, 0); |
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1173 REQ(n, comp_if); |
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1174 n_ifs++; |
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1175 if (NCH(n) == 2) |
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1176 return n_ifs; |
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1177 n = CHILD(n, 2); |
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1178 } |
| 35742 | 1179 } |
| 1180 | |
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1181 static asdl_seq * |
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1182 ast_for_comprehension(struct compiling *c, const node *n) |
| 35742 | 1183 { |
| 1184 int i, n_fors; | |
|
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1185 asdl_seq *comps; |
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1186 |
|
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1187 n_fors = count_comp_fors(c, n); |
| 35742 | 1188 if (n_fors == -1) |
| 1189 return NULL; | |
|
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1190 |
|
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1191 comps = asdl_seq_new(n_fors, c->c_arena); |
|
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1192 if (!comps) |
| 35742 | 1193 return NULL; |
|
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1194 |
| 35742 | 1195 for (i = 0; i < n_fors; i++) { |
|
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|
1196 comprehension_ty comp; |
| 35742 | 1197 asdl_seq *t; |
|
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|
1198 expr_ty expression, first; |
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1199 node *for_ch; |
| 35742 | 1200 |
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1201 REQ(n, comp_for); |
| 35742 | 1202 |
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1203 for_ch = CHILD(n, 1); |
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1204 t = ast_for_exprlist(c, for_ch, Store); |
|
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1205 if (!t) |
| 35742 | 1206 return NULL; |
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1207 expression = ast_for_expr(c, CHILD(n, 3)); |
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1208 if (!expression) |
| 35742 | 1209 return NULL; |
|
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1210 |
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1211 /* Check the # of children rather than the length of t, since |
|
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1212 (x for x, in ...) has 1 element in t, but still requires a Tuple. */ |
|
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1213 first = (expr_ty)asdl_seq_GET(t, 0); |
|
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1214 if (NCH(for_ch) == 1) |
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1215 comp = comprehension(first, expression, NULL, c->c_arena); |
| 35742 | 1216 else |
|
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1217 comp = comprehension(Tuple(t, Store, first->lineno, first->col_offset, |
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1218 c->c_arena), |
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1219 expression, NULL, c->c_arena); |
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1220 if (!comp) |
| 35742 | 1221 return NULL; |
|
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1222 |
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1223 if (NCH(n) == 5) { |
| 35742 | 1224 int j, n_ifs; |
| 1225 asdl_seq *ifs; | |
| 1226 | |
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1227 n = CHILD(n, 4); |
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1228 n_ifs = count_comp_ifs(c, n); |
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1229 if (n_ifs == -1) |
| 35742 | 1230 return NULL; |
|
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1231 |
|
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|
1232 ifs = asdl_seq_new(n_ifs, c->c_arena); |
|
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|
1233 if (!ifs) |
| 35742 | 1234 return NULL; |
|
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|
1235 |
| 35742 | 1236 for (j = 0; j < n_ifs; j++) { |
|
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|
1237 REQ(n, comp_iter); |
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1238 n = CHILD(n, 0); |
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1239 REQ(n, comp_if); |
| 35742 | 1240 |
|
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1241 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
1242 if (!expression) |
|
35798
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Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
1243 return NULL; |
|
36718
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Remove asdl_seq_APPEND() and simplify asdl seq implementation.
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|
1244 asdl_seq_SET(ifs, j, expression); |
|
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1245 if (NCH(n) == 3) |
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1246 n = CHILD(n, 2); |
| 35742 | 1247 } |
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1248 /* on exit, must guarantee that n is a comp_for */ |
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1249 if (TYPE(n) == comp_iter) |
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1250 n = CHILD(n, 0); |
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1251 comp->ifs = ifs; |
| 35742 | 1252 } |
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1253 asdl_seq_SET(comps, i, comp); |
| 35742 | 1254 } |
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1255 return comps; |
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1256 } |
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1257 |
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1258 static expr_ty |
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1259 ast_for_itercomp(struct compiling *c, const node *n, int type) |
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1260 { |
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1261 /* testlist_comp: test ( comp_for | (',' test)* [','] ) |
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1262 argument: [test '='] test [comp_for] # Really [keyword '='] test */ |
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1263 expr_ty elt; |
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1264 asdl_seq *comps; |
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1265 |
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1266 assert(NCH(n) > 1); |
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1267 |
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1268 elt = ast_for_expr(c, CHILD(n, 0)); |
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1269 if (!elt) |
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1270 return NULL; |
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1271 |
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1272 comps = ast_for_comprehension(c, CHILD(n, 1)); |
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1273 if (!comps) |
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1274 return NULL; |
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1275 |
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1276 if (type == COMP_GENEXP) |
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1277 return GeneratorExp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1278 else if (type == COMP_LISTCOMP) |
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1279 return ListComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1280 else if (type == COMP_SETCOMP) |
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1281 return SetComp(elt, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1282 else |
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1283 /* Should never happen */ |
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1284 return NULL; |
| 35742 | 1285 } |
| 1286 | |
| 1287 static expr_ty | |
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1288 ast_for_dictcomp(struct compiling *c, const node *n) |
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1289 { |
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1290 expr_ty key, value; |
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1291 asdl_seq *comps; |
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1292 |
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1293 assert(NCH(n) > 3); |
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1294 REQ(CHILD(n, 1), COLON); |
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1295 |
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1296 key = ast_for_expr(c, CHILD(n, 0)); |
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1297 if (!key) |
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1298 return NULL; |
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1299 value = ast_for_expr(c, CHILD(n, 2)); |
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1300 if (!value) |
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1301 return NULL; |
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1302 |
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1303 comps = ast_for_comprehension(c, CHILD(n, 3)); |
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1304 if (!comps) |
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1305 return NULL; |
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1306 |
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1307 return DictComp(key, value, comps, LINENO(n), n->n_col_offset, c->c_arena); |
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1308 } |
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1309 |
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1310 static expr_ty |
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1311 ast_for_genexp(struct compiling *c, const node *n) |
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1312 { |
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1313 assert(TYPE(n) == (testlist_comp) || TYPE(n) == (argument)); |
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1314 return ast_for_itercomp(c, n, COMP_GENEXP); |
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1315 } |
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1316 |
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1317 static expr_ty |
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1318 ast_for_listcomp(struct compiling *c, const node *n) |
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1319 { |
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1320 assert(TYPE(n) == (testlist_comp)); |
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1321 return ast_for_itercomp(c, n, COMP_LISTCOMP); |
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1322 } |
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1323 |
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1324 static expr_ty |
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1325 ast_for_setcomp(struct compiling *c, const node *n) |
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1326 { |
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1327 assert(TYPE(n) == (dictorsetmaker)); |
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1328 return ast_for_itercomp(c, n, COMP_SETCOMP); |
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1329 } |
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1330 |
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1331 |
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1332 static expr_ty |
| 35742 | 1333 ast_for_atom(struct compiling *c, const node *n) |
| 1334 { | |
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1335 /* atom: '(' [yield_expr|testlist_comp] ')' | '[' [testlist_comp] ']' |
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1336 | '{' [dictmaker|testlist_comp] '}' | NAME | NUMBER | STRING+ |
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1337 | '...' | 'None' | 'True' | 'False' |
| 35742 | 1338 */ |
| 1339 node *ch = CHILD(n, 0); | |
| 40894 | 1340 int bytesmode = 0; |
| 35742 | 1341 |
| 1342 switch (TYPE(ch)) { | |
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1343 case NAME: { |
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1344 /* All names start in Load context, but may later be |
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1345 changed. */ |
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1346 PyObject *name = NEW_IDENTIFIER(ch); |
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1347 if (!name) |
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1348 return NULL; |
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1349 return Name(name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1350 } |
| 35742 | 1351 case STRING: { |
| 40894 | 1352 PyObject *str = parsestrplus(c, n, &bytesmode); |
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1353 if (!str) { |
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1354 if (PyErr_ExceptionMatches(PyExc_UnicodeError)) { |
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1355 PyObject *type, *value, *tback, *errstr; |
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1356 PyErr_Fetch(&type, &value, &tback); |
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1357 errstr = PyObject_Str(value); |
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1358 if (errstr) { |
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1359 char *s = ""; |
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1360 char buf[128]; |
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1361 s = _PyUnicode_AsString(errstr); |
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1362 PyOS_snprintf(buf, sizeof(buf), "(unicode error) %s", s); |
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1363 ast_error(n, buf); |
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1364 Py_DECREF(errstr); |
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1365 } else { |
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1366 ast_error(n, "(unicode error) unknown error"); |
|
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1367 } |
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|
1368 Py_DECREF(type); |
|
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|
1369 Py_DECREF(value); |
|
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|
1370 Py_XDECREF(tback); |
|
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|
1371 } |
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1372 return NULL; |
|
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|
1373 } |
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|
1374 PyArena_AddPyObject(c->c_arena, str); |
| 40894 | 1375 if (bytesmode) |
| 1376 return Bytes(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 1377 else | |
| 1378 return Str(str, LINENO(n), n->n_col_offset, c->c_arena); | |
| 35742 | 1379 } |
| 1380 case NUMBER: { | |
|
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1381 PyObject *pynum = parsenumber(c, STR(ch)); |
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1382 if (!pynum) |
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1383 return NULL; |
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1384 |
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1385 PyArena_AddPyObject(c->c_arena, pynum); |
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1386 return Num(pynum, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1387 } |
|
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1388 case ELLIPSIS: /* Ellipsis */ |
|
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1389 return Ellipsis(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1390 case LPAR: /* some parenthesized expressions */ |
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1391 ch = CHILD(n, 1); |
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1392 |
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1393 if (TYPE(ch) == RPAR) |
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1394 return Tuple(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1395 |
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1396 if (TYPE(ch) == yield_expr) |
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1397 return ast_for_expr(c, ch); |
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1398 |
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1399 /* testlist_comp: test ( comp_for | (',' test)* [','] ) */ |
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1400 if ((NCH(ch) > 1) && (TYPE(CHILD(ch, 1)) == comp_for)) |
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1401 return ast_for_genexp(c, ch); |
|
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1402 |
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1403 return ast_for_testlist(c, ch); |
| 35742 | 1404 case LSQB: /* list (or list comprehension) */ |
|
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1405 ch = CHILD(n, 1); |
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1406 |
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1407 if (TYPE(ch) == RSQB) |
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1408 return List(NULL, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1409 |
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|
1410 REQ(ch, testlist_comp); |
|
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1411 if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
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1412 asdl_seq *elts = seq_for_testlist(c, ch); |
|
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|
1413 if (!elts) |
|
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|
1414 return NULL; |
|
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parents:
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|
1415 |
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|
1416 return List(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1417 } |
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|
1418 else |
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|
1419 return ast_for_listcomp(c, ch); |
| 35742 | 1420 case LBRACE: { |
|
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1421 /* dictorsetmaker: test ':' test (',' test ':' test)* [','] | |
|
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1422 * test (gen_for | (',' test)* [',']) */ |
|
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|
1423 int i, size; |
|
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|
1424 asdl_seq *keys, *values; |
|
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1425 |
|
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|
1426 ch = CHILD(n, 1); |
|
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1427 if (TYPE(ch) == RBRACE) { |
|
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|
1428 /* it's an empty dict */ |
|
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|
1429 return Dict(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1430 } else if (NCH(ch) == 1 || TYPE(CHILD(ch, 1)) == COMMA) { |
|
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|
1431 /* it's a simple set */ |
|
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a5e410639e24
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|
1432 asdl_seq *elts; |
|
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|
1433 size = (NCH(ch) + 1) / 2; /* +1 in case no trailing comma */ |
|
41482
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parents:
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|
1434 elts = asdl_seq_new(size, c->c_arena); |
|
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|
1435 if (!elts) |
|
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|
1436 return NULL; |
|
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diff
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|
1437 for (i = 0; i < NCH(ch); i += 2) { |
|
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parents:
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changeset
|
1438 expr_ty expression; |
|
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|
1439 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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|
1440 if (!expression) |
|
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|
1441 return NULL; |
|
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|
1442 asdl_seq_SET(elts, i / 2, expression); |
|
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|
1443 } |
|
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diff
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|
1444 return Set(elts, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1445 } else if (TYPE(CHILD(ch, 1)) == comp_for) { |
|
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|
1446 /* it's a set comprehension */ |
|
060c79f6d919
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|
1447 return ast_for_setcomp(c, ch); |
|
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|
1448 } else if (NCH(ch) > 3 && TYPE(CHILD(ch, 3)) == comp_for) { |
|
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|
1449 return ast_for_dictcomp(c, ch); |
|
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|
1450 } else { |
|
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|
1451 /* it's a dict */ |
|
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|
1452 size = (NCH(ch) + 1) / 4; /* +1 in case no trailing comma */ |
|
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diff
changeset
|
1453 keys = asdl_seq_new(size, c->c_arena); |
|
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|
1454 if (!keys) |
|
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diff
changeset
|
1455 return NULL; |
|
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|
1456 |
|
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diff
changeset
|
1457 values = asdl_seq_new(size, c->c_arena); |
|
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changeset
|
1458 if (!values) |
|
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diff
changeset
|
1459 return NULL; |
|
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diff
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|
1460 |
|
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diff
changeset
|
1461 for (i = 0; i < NCH(ch); i += 4) { |
|
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changeset
|
1462 expr_ty expression; |
|
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|
1463 |
|
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diff
changeset
|
1464 expression = ast_for_expr(c, CHILD(ch, i)); |
|
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|
1465 if (!expression) |
|
d0b83c4630c0
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diff
changeset
|
1466 return NULL; |
|
36065
ea083efdc96c
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|
1467 |
|
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diff
changeset
|
1468 asdl_seq_SET(keys, i / 4, expression); |
|
35873
76ed7fdc9d85
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35870
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changeset
|
1469 |
|
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diff
changeset
|
1470 expression = ast_for_expr(c, CHILD(ch, i + 2)); |
|
d0b83c4630c0
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|
1471 if (!expression) |
|
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|
1472 return NULL; |
|
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diff
changeset
|
1473 |
|
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39678
diff
changeset
|
1474 asdl_seq_SET(values, i / 4, expression); |
|
d0b83c4630c0
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diff
changeset
|
1475 } |
|
d0b83c4630c0
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39678
diff
changeset
|
1476 return Dict(keys, values, LINENO(n), n->n_col_offset, c->c_arena); |
|
d0b83c4630c0
SF patch 1547796 by Georg Brandl -- set literals.
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diff
changeset
|
1477 } |
| 35742 | 1478 } |
| 1479 default: | |
|
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|
1480 PyErr_Format(PyExc_SystemError, "unhandled atom %d", TYPE(ch)); |
|
cc992d75d5b3
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diff
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|
1481 return NULL; |
| 35742 | 1482 } |
| 1483 } | |
| 1484 | |
| 1485 static slice_ty | |
| 1486 ast_for_slice(struct compiling *c, const node *n) | |
| 1487 { | |
| 1488 node *ch; | |
| 1489 expr_ty lower = NULL, upper = NULL, step = NULL; | |
| 1490 | |
| 1491 REQ(n, subscript); | |
| 1492 | |
| 1493 /* | |
|
39783
7a0ad110e91e
Patch #1550786: ellipsis literal.
Georg Brandl <georg@python.org>
parents:
39782
diff
changeset
|
1494 subscript: test | [test] ':' [test] [sliceop] |
| 35742 | 1495 sliceop: ':' [test] |
| 1496 */ | |
| 1497 ch = CHILD(n, 0); | |
| 1498 if (NCH(n) == 1 && TYPE(ch) == test) { | |
| 1499 /* 'step' variable hold no significance in terms of being used over | |
| 1500 other vars */ | |
| 1501 step = ast_for_expr(c, ch); | |
| 1502 if (!step) | |
| 1503 return NULL; | |
| 1504 | |
|
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Four months of trunk changes (including a few releases...)
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|
1505 return Index(step, c->c_arena); |
| 35742 | 1506 } |
| 1507 | |
| 1508 if (TYPE(ch) == test) { | |
|
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diff
changeset
|
1509 lower = ast_for_expr(c, ch); |
| 35742 | 1510 if (!lower) |
| 1511 return NULL; | |
| 1512 } | |
| 1513 | |
| 1514 /* If there's an upper bound it's in the second or third position. */ | |
| 1515 if (TYPE(ch) == COLON) { | |
|
40450
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diff
changeset
|
1516 if (NCH(n) > 1) { |
|
cc992d75d5b3
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diff
changeset
|
1517 node *n2 = CHILD(n, 1); |
| 35742 | 1518 |
|
40450
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40215
diff
changeset
|
1519 if (TYPE(n2) == test) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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diff
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|
1520 upper = ast_for_expr(c, n2); |
| 35742 | 1521 if (!upper) |
| 1522 return NULL; | |
| 1523 } | |
|
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diff
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|
1524 } |
| 35742 | 1525 } else if (NCH(n) > 2) { |
|
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Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
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changeset
|
1526 node *n2 = CHILD(n, 2); |
| 35742 | 1527 |
|
40450
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|
1528 if (TYPE(n2) == test) { |
|
cc992d75d5b3
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diff
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|
1529 upper = ast_for_expr(c, n2); |
| 35742 | 1530 if (!upper) |
| 1531 return NULL; | |
| 1532 } | |
| 1533 } | |
| 1534 | |
| 1535 ch = CHILD(n, NCH(n) - 1); | |
| 1536 if (TYPE(ch) == sliceop) { | |
|
54918
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Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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|
1537 if (NCH(ch) != 1) { |
|
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|
1538 ch = CHILD(ch, 1); |
|
f731859e9b3b
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|
1539 if (TYPE(ch) == test) { |
|
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Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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|
1540 step = ast_for_expr(c, ch); |
|
f731859e9b3b
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|
1541 if (!step) |
|
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|
1542 return NULL; |
|
f731859e9b3b
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changeset
|
1543 } |
| 35742 | 1544 } |
| 1545 } | |
| 1546 | |
|
36065
ea083efdc96c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
1547 return Slice(lower, upper, step, c->c_arena); |
| 35742 | 1548 } |
| 1549 | |
| 1550 static expr_ty | |
| 1551 ast_for_binop(struct compiling *c, const node *n) | |
| 1552 { | |
|
41554
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|
1553 /* Must account for a sequence of expressions. |
|
06145fbc7ab9
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|
1554 How should A op B op C by represented? |
|
06145fbc7ab9
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|
1555 BinOp(BinOp(A, op, B), op, C). |
|
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|
1556 */ |
| 35742 | 1557 |
|
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|
1558 int i, nops; |
|
06145fbc7ab9
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|
1559 expr_ty expr1, expr2, result; |
|
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|
1560 operator_ty newoperator; |
|
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|
1561 |
|
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|
1562 expr1 = ast_for_expr(c, CHILD(n, 0)); |
|
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|
1563 if (!expr1) |
|
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|
1564 return NULL; |
| 35742 | 1565 |
|
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|
1566 expr2 = ast_for_expr(c, CHILD(n, 2)); |
|
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|
1567 if (!expr2) |
|
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|
1568 return NULL; |
|
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|
1569 |
|
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|
1570 newoperator = get_operator(CHILD(n, 1)); |
|
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|
1571 if (!newoperator) |
|
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|
1572 return NULL; |
| 35742 | 1573 |
|
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|
1574 result = BinOp(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, |
|
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|
1575 c->c_arena); |
|
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|
1576 if (!result) |
|
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|
1577 return NULL; |
| 35742 | 1578 |
|
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|
1579 nops = (NCH(n) - 1) / 2; |
|
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|
1580 for (i = 1; i < nops; i++) { |
|
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|
1581 expr_ty tmp_result, tmp; |
|
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|
1582 const node* next_oper = CHILD(n, i * 2 + 1); |
|
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|
1583 |
|
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|
1584 newoperator = get_operator(next_oper); |
|
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|
1585 if (!newoperator) |
| 35742 | 1586 return NULL; |
| 1587 | |
|
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|
1588 tmp = ast_for_expr(c, CHILD(n, i * 2 + 2)); |
|
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|
1589 if (!tmp) |
| 35742 | 1590 return NULL; |
| 1591 | |
|
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1592 tmp_result = BinOp(result, newoperator, tmp, |
|
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|
1593 LINENO(next_oper), next_oper->n_col_offset, |
|
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1594 c->c_arena); |
|
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1595 if (!tmp_result) |
|
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1596 return NULL; |
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1597 result = tmp_result; |
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1598 } |
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|
1599 return result; |
| 35742 | 1600 } |
| 1601 | |
|
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|
1602 static expr_ty |
|
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|
1603 ast_for_trailer(struct compiling *c, const node *n, expr_ty left_expr) |
|
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1604 { |
|
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|
1605 /* trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME |
|
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|
1606 subscriptlist: subscript (',' subscript)* [','] |
|
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|
1607 subscript: '.' '.' '.' | test | [test] ':' [test] [sliceop] |
|
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1608 */ |
|
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|
1609 REQ(n, trailer); |
|
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|
1610 if (TYPE(CHILD(n, 0)) == LPAR) { |
|
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|
1611 if (NCH(n) == 2) |
|
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1612 return Call(left_expr, NULL, NULL, NULL, NULL, LINENO(n), |
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1613 n->n_col_offset, c->c_arena); |
|
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1614 else |
|
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1615 return ast_for_call(c, CHILD(n, 1), left_expr); |
|
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1616 } |
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1617 else if (TYPE(CHILD(n, 0)) == DOT ) { |
|
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1618 PyObject *attr_id = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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1619 if (!attr_id) |
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1620 return NULL; |
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1621 return Attribute(left_expr, attr_id, Load, |
|
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1622 LINENO(n), n->n_col_offset, c->c_arena); |
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1623 } |
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1624 else { |
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1625 REQ(CHILD(n, 0), LSQB); |
|
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1626 REQ(CHILD(n, 2), RSQB); |
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|
1627 n = CHILD(n, 1); |
|
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|
1628 if (NCH(n) == 1) { |
|
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|
1629 slice_ty slc = ast_for_slice(c, CHILD(n, 0)); |
|
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|
1630 if (!slc) |
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|
1631 return NULL; |
|
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|
1632 return Subscript(left_expr, slc, Load, LINENO(n), n->n_col_offset, |
|
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|
1633 c->c_arena); |
|
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|
1634 } |
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|
1635 else { |
|
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|
1636 /* The grammar is ambiguous here. The ambiguity is resolved |
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|
1637 by treating the sequence as a tuple literal if there are |
|
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|
1638 no slice features. |
|
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|
1639 */ |
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|
1640 int j; |
|
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|
1641 slice_ty slc; |
|
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|
1642 expr_ty e; |
|
40941
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|
1643 int simple = 1; |
|
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1644 asdl_seq *slices, *elts; |
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|
1645 slices = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
|
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1646 if (!slices) |
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1647 return NULL; |
|
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|
1648 for (j = 0; j < NCH(n); j += 2) { |
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|
1649 slc = ast_for_slice(c, CHILD(n, j)); |
|
36065
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|
1650 if (!slc) |
|
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1651 return NULL; |
|
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1652 if (slc->kind != Index_kind) |
|
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|
1653 simple = 0; |
|
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1654 asdl_seq_SET(slices, j / 2, slc); |
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1655 } |
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1656 if (!simple) { |
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|
1657 return Subscript(left_expr, ExtSlice(slices, c->c_arena), |
|
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|
1658 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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1659 } |
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|
1660 /* extract Index values and put them in a Tuple */ |
|
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|
1661 elts = asdl_seq_new(asdl_seq_LEN(slices), c->c_arena); |
|
36877
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SF #1444030: Fix several potential defects found by Coverity.
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|
1662 if (!elts) |
|
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|
1663 return NULL; |
|
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|
1664 for (j = 0; j < asdl_seq_LEN(slices); ++j) { |
|
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|
1665 slc = (slice_ty)asdl_seq_GET(slices, j); |
|
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|
1666 assert(slc->kind == Index_kind && slc->v.Index.value); |
|
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|
1667 asdl_seq_SET(elts, j, slc->v.Index.value); |
|
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|
1668 } |
|
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|
1669 e = Tuple(elts, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1670 if (!e) |
|
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|
1671 return NULL; |
|
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|
1672 return Subscript(left_expr, Index(e, c->c_arena), |
|
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|
1673 Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1674 } |
|
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|
1675 } |
|
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|
1676 } |
|
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|
1677 |
|
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|
1678 static expr_ty |
|
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1679 ast_for_factor(struct compiling *c, const node *n) |
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1680 { |
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|
1681 node *pfactor, *ppower, *patom, *pnum; |
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|
1682 expr_ty expression; |
|
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1683 |
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1684 /* If the unary - operator is applied to a constant, don't generate |
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1685 a UNARY_NEGATIVE opcode. Just store the approriate value as a |
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1686 constant. The peephole optimizer already does something like |
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1687 this but it doesn't handle the case where the constant is |
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1688 (sys.maxint - 1). In that case, we want a PyIntObject, not a |
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1689 PyLongObject. |
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1690 */ |
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1691 if (TYPE(CHILD(n, 0)) == MINUS |
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1692 && NCH(n) == 2 |
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1693 && TYPE((pfactor = CHILD(n, 1))) == factor |
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|
1694 && NCH(pfactor) == 1 |
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1695 && TYPE((ppower = CHILD(pfactor, 0))) == power |
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1696 && NCH(ppower) == 1 |
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1697 && TYPE((patom = CHILD(ppower, 0))) == atom |
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1698 && TYPE((pnum = CHILD(patom, 0))) == NUMBER) { |
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1699 char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
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1700 if (s == NULL) |
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1701 return NULL; |
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1702 s[0] = '-'; |
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1703 strcpy(s + 1, STR(pnum)); |
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1704 PyObject_FREE(STR(pnum)); |
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1705 STR(pnum) = s; |
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1706 return ast_for_atom(c, patom); |
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1707 } |
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1708 |
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1709 expression = ast_for_expr(c, CHILD(n, 1)); |
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1710 if (!expression) |
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1711 return NULL; |
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1712 |
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1713 switch (TYPE(CHILD(n, 0))) { |
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1714 case PLUS: |
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1715 return UnaryOp(UAdd, expression, LINENO(n), n->n_col_offset, |
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1716 c->c_arena); |
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1717 case MINUS: |
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1718 return UnaryOp(USub, expression, LINENO(n), n->n_col_offset, |
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1719 c->c_arena); |
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1720 case TILDE: |
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1721 return UnaryOp(Invert, expression, LINENO(n), |
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1722 n->n_col_offset, c->c_arena); |
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1723 } |
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1724 PyErr_Format(PyExc_SystemError, "unhandled factor: %d", |
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1725 TYPE(CHILD(n, 0))); |
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1726 return NULL; |
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1727 } |
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1728 |
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1729 static expr_ty |
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1730 ast_for_power(struct compiling *c, const node *n) |
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1731 { |
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1732 /* power: atom trailer* ('**' factor)* |
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1733 */ |
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1734 int i; |
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1735 expr_ty e, tmp; |
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1736 REQ(n, power); |
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1737 e = ast_for_atom(c, CHILD(n, 0)); |
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1738 if (!e) |
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1739 return NULL; |
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1740 if (NCH(n) == 1) |
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1741 return e; |
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|
1742 for (i = 1; i < NCH(n); i++) { |
|
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|
1743 node *ch = CHILD(n, i); |
|
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|
1744 if (TYPE(ch) != trailer) |
|
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diff
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|
1745 break; |
|
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|
1746 tmp = ast_for_trailer(c, ch, e); |
|
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|
1747 if (!tmp) |
|
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|
1748 return NULL; |
|
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|
1749 tmp->lineno = e->lineno; |
|
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|
1750 tmp->col_offset = e->col_offset; |
|
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|
1751 e = tmp; |
|
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|
1752 } |
|
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diff
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|
1753 if (TYPE(CHILD(n, NCH(n) - 1)) == factor) { |
|
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|
1754 expr_ty f = ast_for_expr(c, CHILD(n, NCH(n) - 1)); |
|
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|
1755 if (!f) |
|
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Neil Schemenauer <nascheme@enme.ucalgary.ca>
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|
1756 return NULL; |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
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|
1757 tmp = BinOp(e, Pow, f, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1758 if (!tmp) |
|
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|
1759 return NULL; |
|
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|
1760 e = tmp; |
|
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|
1761 } |
|
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|
1762 return e; |
|
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|
1763 } |
|
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|
1764 |
|
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|
1765 static expr_ty |
|
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1766 ast_for_starred(struct compiling *c, const node *n) |
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1767 { |
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1768 expr_ty tmp; |
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1769 REQ(n, star_expr); |
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1770 |
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1771 tmp = ast_for_expr(c, CHILD(n, 1)); |
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1772 if (!tmp) |
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1773 return NULL; |
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1774 |
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1775 /* The Load context is changed later. */ |
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1776 return Starred(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
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1777 } |
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1778 |
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|
1779 |
| 35742 | 1780 /* Do not name a variable 'expr'! Will cause a compile error. |
| 1781 */ | |
| 1782 | |
| 1783 static expr_ty | |
| 1784 ast_for_expr(struct compiling *c, const node *n) | |
| 1785 { | |
| 1786 /* handle the full range of simple expressions | |
|
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|
1787 test: or_test ['if' or_test 'else' test] | lambdef |
|
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|
1788 test_nocond: or_test | lambdef_nocond |
|
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1789 or_test: and_test ('or' and_test)* |
| 35742 | 1790 and_test: not_test ('and' not_test)* |
| 1791 not_test: 'not' not_test | comparison | |
| 1792 comparison: expr (comp_op expr)* | |
| 1793 expr: xor_expr ('|' xor_expr)* | |
| 1794 xor_expr: and_expr ('^' and_expr)* | |
| 1795 and_expr: shift_expr ('&' shift_expr)* | |
| 1796 shift_expr: arith_expr (('<<'|'>>') arith_expr)* | |
| 1797 arith_expr: term (('+'|'-') term)* | |
| 1798 term: factor (('*'|'/'|'%'|'//') factor)* | |
| 1799 factor: ('+'|'-'|'~') factor | power | |
| 1800 power: atom trailer* ('**' factor)* | |
| 1801 */ | |
| 1802 | |
| 1803 asdl_seq *seq; | |
| 1804 int i; | |
| 1805 | |
| 1806 loop: | |
| 1807 switch (TYPE(n)) { | |
| 1808 case test: | |
|
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1809 case test_nocond: |
|
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1810 if (TYPE(CHILD(n, 0)) == lambdef || |
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1811 TYPE(CHILD(n, 0)) == lambdef_nocond) |
| 35742 | 1812 return ast_for_lambdef(c, CHILD(n, 0)); |
|
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1813 else if (NCH(n) > 1) |
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1814 return ast_for_ifexpr(c, n); |
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1815 /* Fallthrough */ |
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1816 case or_test: |
| 35742 | 1817 case and_test: |
| 1818 if (NCH(n) == 1) { | |
| 1819 n = CHILD(n, 0); | |
| 1820 goto loop; | |
| 1821 } | |
|
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|
1822 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 1823 if (!seq) |
| 1824 return NULL; | |
| 1825 for (i = 0; i < NCH(n); i += 2) { | |
| 1826 expr_ty e = ast_for_expr(c, CHILD(n, i)); | |
| 1827 if (!e) | |
| 1828 return NULL; | |
| 1829 asdl_seq_SET(seq, i / 2, e); | |
| 1830 } | |
| 1831 if (!strcmp(STR(CHILD(n, 1)), "and")) | |
|
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1832 return BoolOp(And, seq, LINENO(n), n->n_col_offset, |
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1833 c->c_arena); |
|
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1834 assert(!strcmp(STR(CHILD(n, 1)), "or")); |
|
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1835 return BoolOp(Or, seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 1836 case not_test: |
| 1837 if (NCH(n) == 1) { | |
| 1838 n = CHILD(n, 0); | |
| 1839 goto loop; | |
| 1840 } | |
| 1841 else { | |
| 1842 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 1843 if (!expression) | |
| 1844 return NULL; | |
| 1845 | |
|
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1846 return UnaryOp(Not, expression, LINENO(n), n->n_col_offset, |
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|
1847 c->c_arena); |
| 35742 | 1848 } |
| 1849 case comparison: | |
| 1850 if (NCH(n) == 1) { | |
| 1851 n = CHILD(n, 0); | |
| 1852 goto loop; | |
| 1853 } | |
| 1854 else { | |
| 1855 expr_ty expression; | |
|
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1856 asdl_int_seq *ops; |
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1857 asdl_seq *cmps; |
|
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|
1858 ops = asdl_int_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1859 if (!ops) |
| 1860 return NULL; | |
|
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|
1861 cmps = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 1862 if (!cmps) { |
| 1863 return NULL; | |
| 1864 } | |
| 1865 for (i = 1; i < NCH(n); i += 2) { | |
|
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|
1866 cmpop_ty newoperator; |
| 35742 | 1867 |
|
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|
1868 newoperator = ast_for_comp_op(c, CHILD(n, i)); |
|
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1869 if (!newoperator) { |
| 35742 | 1870 return NULL; |
|
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1871 } |
| 35742 | 1872 |
| 1873 expression = ast_for_expr(c, CHILD(n, i + 1)); | |
|
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1874 if (!expression) { |
| 35742 | 1875 return NULL; |
|
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|
1876 } |
| 35742 | 1877 |
|
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|
1878 asdl_seq_SET(ops, i / 2, newoperator); |
| 35742 | 1879 asdl_seq_SET(cmps, i / 2, expression); |
| 1880 } | |
| 1881 expression = ast_for_expr(c, CHILD(n, 0)); | |
|
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|
1882 if (!expression) { |
| 35742 | 1883 return NULL; |
|
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|
1884 } |
| 35742 | 1885 |
|
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|
1886 return Compare(expression, ops, cmps, LINENO(n), |
|
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|
1887 n->n_col_offset, c->c_arena); |
| 35742 | 1888 } |
| 1889 break; | |
| 1890 | |
|
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|
1891 case star_expr: |
|
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|
1892 return ast_for_starred(c, n); |
| 35742 | 1893 /* The next five cases all handle BinOps. The main body of code |
| 1894 is the same in each case, but the switch turned inside out to | |
| 1895 reuse the code for each type of operator. | |
| 1896 */ | |
| 1897 case expr: | |
| 1898 case xor_expr: | |
| 1899 case and_expr: | |
| 1900 case shift_expr: | |
| 1901 case arith_expr: | |
| 1902 case term: | |
| 1903 if (NCH(n) == 1) { | |
| 1904 n = CHILD(n, 0); | |
| 1905 goto loop; | |
| 1906 } | |
| 1907 return ast_for_binop(c, n); | |
| 1908 case yield_expr: { | |
|
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|
1909 expr_ty exp = NULL; |
|
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1910 if (NCH(n) == 2) { |
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1911 exp = ast_for_testlist(c, CHILD(n, 1)); |
|
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1912 if (!exp) |
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1913 return NULL; |
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1914 } |
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1915 return Yield(exp, LINENO(n), n->n_col_offset, c->c_arena); |
|
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|
1916 } |
|
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|
1917 case factor: |
| 35742 | 1918 if (NCH(n) == 1) { |
| 1919 n = CHILD(n, 0); | |
| 1920 goto loop; | |
| 1921 } | |
|
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1922 return ast_for_factor(c, n); |
|
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1923 case power: |
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1924 return ast_for_power(c, n); |
| 35742 | 1925 default: |
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1926 PyErr_Format(PyExc_SystemError, "unhandled expr: %d", TYPE(n)); |
| 35742 | 1927 return NULL; |
| 1928 } | |
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1929 /* should never get here unless if error is set */ |
| 35742 | 1930 return NULL; |
| 1931 } | |
| 1932 | |
| 1933 static expr_ty | |
| 1934 ast_for_call(struct compiling *c, const node *n, expr_ty func) | |
| 1935 { | |
| 1936 /* | |
| 1937 arglist: (argument ',')* (argument [',']| '*' test [',' '**' test] | |
| 1938 | '**' test) | |
|
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1939 argument: [test '='] test [comp_for] # Really [keyword '='] test |
| 35742 | 1940 */ |
| 1941 | |
| 1942 int i, nargs, nkeywords, ngens; | |
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1943 asdl_seq *args; |
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1944 asdl_seq *keywords; |
| 35742 | 1945 expr_ty vararg = NULL, kwarg = NULL; |
| 1946 | |
| 1947 REQ(n, arglist); | |
| 1948 | |
| 1949 nargs = 0; | |
| 1950 nkeywords = 0; | |
| 1951 ngens = 0; | |
| 1952 for (i = 0; i < NCH(n); i++) { | |
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1953 node *ch = CHILD(n, i); |
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1954 if (TYPE(ch) == argument) { |
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1955 if (NCH(ch) == 1) |
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1956 nargs++; |
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1957 else if (TYPE(CHILD(ch, 1)) == comp_for) |
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1958 ngens++; |
| 35742 | 1959 else |
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1960 nkeywords++; |
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1961 } |
| 35742 | 1962 } |
| 1963 if (ngens > 1 || (ngens && (nargs || nkeywords))) { | |
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1964 ast_error(n, "Generator expression must be parenthesized " |
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1965 "if not sole argument"); |
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1966 return NULL; |
| 35742 | 1967 } |
| 1968 | |
| 1969 if (nargs + nkeywords + ngens > 255) { | |
| 1970 ast_error(n, "more than 255 arguments"); | |
| 1971 return NULL; | |
| 1972 } | |
| 1973 | |
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1974 args = asdl_seq_new(nargs + ngens, c->c_arena); |
| 35742 | 1975 if (!args) |
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1976 return NULL; |
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1977 keywords = asdl_seq_new(nkeywords, c->c_arena); |
| 35742 | 1978 if (!keywords) |
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1979 return NULL; |
| 35742 | 1980 nargs = 0; |
| 1981 nkeywords = 0; | |
| 1982 for (i = 0; i < NCH(n); i++) { | |
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1983 node *ch = CHILD(n, i); |
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1984 if (TYPE(ch) == argument) { |
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1985 expr_ty e; |
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1986 if (NCH(ch) == 1) { |
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1987 if (nkeywords) { |
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1988 ast_error(CHILD(ch, 0), |
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1989 "non-keyword arg after keyword arg"); |
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1990 return NULL; |
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1991 } |
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1992 if (vararg) { |
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1993 ast_error(CHILD(ch, 0), |
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1994 "only named arguments may follow *expression"); |
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1995 return NULL; |
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1996 } |
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1997 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 1998 if (!e) |
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1999 return NULL; |
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2000 asdl_seq_SET(args, nargs++, e); |
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2001 } |
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2002 else if (TYPE(CHILD(ch, 1)) == comp_for) { |
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2003 e = ast_for_genexp(c, ch); |
| 35742 | 2004 if (!e) |
|
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2005 return NULL; |
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2006 asdl_seq_SET(args, nargs++, e); |
| 35742 | 2007 } |
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2008 else { |
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2009 keyword_ty kw; |
|
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2010 identifier key, tmp; |
|
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2011 int k; |
| 35742 | 2012 |
|
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2013 /* CHILD(ch, 0) is test, but must be an identifier? */ |
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2014 e = ast_for_expr(c, CHILD(ch, 0)); |
| 35742 | 2015 if (!e) |
|
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2016 return NULL; |
| 35742 | 2017 /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 2018 * LHS test = lambda x: x[0], and RHS test = 3. | |
| 2019 * SF bug 132313 points out that complaining about a keyword | |
| 2020 * then is very confusing. | |
| 2021 */ | |
| 2022 if (e->kind == Lambda_kind) { | |
| 2023 ast_error(CHILD(ch, 0), "lambda cannot contain assignment"); | |
|
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2024 return NULL; |
| 35742 | 2025 } else if (e->kind != Name_kind) { |
| 2026 ast_error(CHILD(ch, 0), "keyword can't be an expression"); | |
|
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2027 return NULL; |
|
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2028 } else if (forbidden_name(e->v.Name.id, ch, 1)) { |
|
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2029 return NULL; |
|
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2030 } |
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2031 key = e->v.Name.id; |
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2032 for (k = 0; k < nkeywords; k++) { |
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2033 tmp = ((keyword_ty)asdl_seq_GET(keywords, k))->arg; |
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2034 if (!PyUnicode_Compare(tmp, key)) { |
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2035 ast_error(CHILD(ch, 0), "keyword argument repeated"); |
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2036 return NULL; |
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2037 } |
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2038 } |
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2039 e = ast_for_expr(c, CHILD(ch, 2)); |
| 35742 | 2040 if (!e) |
|
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2041 return NULL; |
|
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2042 kw = keyword(key, e, c->c_arena); |
| 35742 | 2043 if (!kw) |
|
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2044 return NULL; |
|
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2045 asdl_seq_SET(keywords, nkeywords++, kw); |
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2046 } |
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2047 } |
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2048 else if (TYPE(ch) == STAR) { |
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2049 vararg = ast_for_expr(c, CHILD(n, i+1)); |
|
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2050 if (!vararg) |
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2051 return NULL; |
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2052 i++; |
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2053 } |
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2054 else if (TYPE(ch) == DOUBLESTAR) { |
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2055 kwarg = ast_for_expr(c, CHILD(n, i+1)); |
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2056 if (!kwarg) |
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2057 return NULL; |
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2058 i++; |
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2059 } |
| 35742 | 2060 } |
| 2061 | |
|
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2062 return Call(func, args, keywords, vararg, kwarg, func->lineno, func->col_offset, c->c_arena); |
| 35742 | 2063 } |
| 2064 | |
| 2065 static expr_ty | |
|
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2066 ast_for_testlist(struct compiling *c, const node* n) |
| 35742 | 2067 { |
|
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2068 /* testlist_comp: test (comp_for | (',' test)* [',']) */ |
|
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2069 /* testlist: test (',' test)* [','] */ |
| 35742 | 2070 assert(NCH(n) > 0); |
|
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2071 if (TYPE(n) == testlist_comp) { |
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2072 if (NCH(n) > 1) |
|
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2073 assert(TYPE(CHILD(n, 1)) != comp_for); |
|
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2074 } |
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2075 else { |
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2076 assert(TYPE(n) == testlist || |
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2077 TYPE(n) == testlist_star_expr); |
|
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2078 } |
| 35742 | 2079 if (NCH(n) == 1) |
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2080 return ast_for_expr(c, CHILD(n, 0)); |
| 35742 | 2081 else { |
| 2082 asdl_seq *tmp = seq_for_testlist(c, n); | |
| 2083 if (!tmp) | |
| 2084 return NULL; | |
|
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2085 return Tuple(tmp, Load, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2086 } |
|
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2087 } |
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|
2088 |
| 35742 | 2089 static stmt_ty |
| 2090 ast_for_expr_stmt(struct compiling *c, const node *n) | |
| 2091 { | |
| 2092 REQ(n, expr_stmt); | |
|
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2093 /* expr_stmt: testlist_star_expr (augassign (yield_expr|testlist) |
| 35742 | 2094 | ('=' (yield_expr|testlist))*) |
|
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2095 testlist_star_expr: (test|star_expr) (',' test|star_expr)* [','] |
| 35742 | 2096 augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' |
|
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2097 | '<<=' | '>>=' | '**=' | '//=' |
| 35742 | 2098 test: ... here starts the operator precendence dance |
| 2099 */ | |
| 2100 | |
| 2101 if (NCH(n) == 1) { | |
|
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2102 expr_ty e = ast_for_testlist(c, CHILD(n, 0)); |
| 35742 | 2103 if (!e) |
| 2104 return NULL; | |
| 2105 | |
|
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2106 return Expr(e, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2107 } |
| 2108 else if (TYPE(CHILD(n, 1)) == augassign) { | |
| 2109 expr_ty expr1, expr2; | |
|
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2110 operator_ty newoperator; |
|
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2111 node *ch = CHILD(n, 0); |
| 35742 | 2112 |
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2113 expr1 = ast_for_testlist(c, ch); |
| 35742 | 2114 if (!expr1) |
| 2115 return NULL; | |
|
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2116 if(!set_context(c, expr1, Store, ch)) |
|
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2117 return NULL; |
|
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2118 /* set_context checks that most expressions are not the left side. |
|
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2119 Augmented assignments can only have a name, a subscript, or an |
|
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2120 attribute on the left, though, so we have to explicitly check for |
|
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2121 those. */ |
|
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2122 switch (expr1->kind) { |
|
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2123 case Name_kind: |
|
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2124 case Attribute_kind: |
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2125 case Subscript_kind: |
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2126 break; |
|
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2127 default: |
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2128 ast_error(ch, "illegal expression for augmented assignment"); |
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2129 return NULL; |
|
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|
2130 } |
| 35742 | 2131 |
|
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|
2132 ch = CHILD(n, 2); |
|
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2133 if (TYPE(ch) == testlist) |
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2134 expr2 = ast_for_testlist(c, ch); |
|
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2135 else |
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|
2136 expr2 = ast_for_expr(c, ch); |
|
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|
2137 if (!expr2) |
| 35742 | 2138 return NULL; |
| 2139 | |
|
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2140 newoperator = ast_for_augassign(c, CHILD(n, 1)); |
|
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2141 if (!newoperator) |
| 35742 | 2142 return NULL; |
| 2143 | |
|
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2144 return AugAssign(expr1, newoperator, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2145 } |
| 2146 else { | |
|
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2147 int i; |
|
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2148 asdl_seq *targets; |
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2149 node *value; |
| 35742 | 2150 expr_ty expression; |
| 2151 | |
|
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2152 /* a normal assignment */ |
|
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2153 REQ(CHILD(n, 1), EQUAL); |
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2154 targets = asdl_seq_new(NCH(n) / 2, c->c_arena); |
|
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2155 if (!targets) |
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2156 return NULL; |
|
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2157 for (i = 0; i < NCH(n) - 2; i += 2) { |
|
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2158 expr_ty e; |
|
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2159 node *ch = CHILD(n, i); |
|
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2160 if (TYPE(ch) == yield_expr) { |
|
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|
2161 ast_error(ch, "assignment to yield expression not possible"); |
|
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2162 return NULL; |
|
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2163 } |
|
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2164 e = ast_for_testlist(c, ch); |
| 35742 | 2165 |
|
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2166 /* set context to assign */ |
|
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2167 if (!e) |
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2168 return NULL; |
| 35742 | 2169 |
|
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2170 if (!set_context(c, e, Store, CHILD(n, i))) |
|
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2171 return NULL; |
| 35742 | 2172 |
|
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|
2173 asdl_seq_SET(targets, i / 2, e); |
|
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2174 } |
|
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|
2175 value = CHILD(n, NCH(n) - 1); |
|
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2176 if (TYPE(value) == testlist_star_expr) |
|
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|
2177 expression = ast_for_testlist(c, value); |
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2178 else |
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|
2179 expression = ast_for_expr(c, value); |
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2180 if (!expression) |
|
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|
2181 return NULL; |
|
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|
2182 return Assign(targets, expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2183 } |
| 2184 } | |
| 2185 | |
|
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2186 |
| 35742 | 2187 static asdl_seq * |
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|
2188 ast_for_exprlist(struct compiling *c, const node *n, expr_context_ty context) |
| 35742 | 2189 { |
| 2190 asdl_seq *seq; | |
| 2191 int i; | |
| 2192 expr_ty e; | |
| 2193 | |
| 2194 REQ(n, exprlist); | |
| 2195 | |
|
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|
2196 seq = asdl_seq_new((NCH(n) + 1) / 2, c->c_arena); |
| 35742 | 2197 if (!seq) |
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2198 return NULL; |
| 35742 | 2199 for (i = 0; i < NCH(n); i += 2) { |
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2200 e = ast_for_expr(c, CHILD(n, i)); |
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2201 if (!e) |
|
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2202 return NULL; |
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|
2203 asdl_seq_SET(seq, i / 2, e); |
|
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2204 if (context && !set_context(c, e, context, CHILD(n, i))) |
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2205 return NULL; |
| 35742 | 2206 } |
| 2207 return seq; | |
| 2208 } | |
| 2209 | |
| 2210 static stmt_ty | |
| 2211 ast_for_del_stmt(struct compiling *c, const node *n) | |
| 2212 { | |
| 2213 asdl_seq *expr_list; | |
| 2214 | |
| 2215 /* del_stmt: 'del' exprlist */ | |
| 2216 REQ(n, del_stmt); | |
| 2217 | |
| 2218 expr_list = ast_for_exprlist(c, CHILD(n, 1), Del); | |
| 2219 if (!expr_list) | |
| 2220 return NULL; | |
|
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|
2221 return Delete(expr_list, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2222 } |
| 2223 | |
| 2224 static stmt_ty | |
| 2225 ast_for_flow_stmt(struct compiling *c, const node *n) | |
| 2226 { | |
| 2227 /* | |
| 2228 flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | |
| 2229 | yield_stmt | |
| 2230 break_stmt: 'break' | |
| 2231 continue_stmt: 'continue' | |
| 2232 return_stmt: 'return' [testlist] | |
| 2233 yield_stmt: yield_expr | |
| 2234 yield_expr: 'yield' testlist | |
| 2235 raise_stmt: 'raise' [test [',' test [',' test]]] | |
| 2236 */ | |
| 2237 node *ch; | |
| 2238 | |
| 2239 REQ(n, flow_stmt); | |
| 2240 ch = CHILD(n, 0); | |
| 2241 switch (TYPE(ch)) { | |
| 2242 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
|
2243 return Break(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2244 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
|
2245 return Continue(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2246 case yield_stmt: { /* will reduce to yield_expr */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2247 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
|
2248 if (!exp) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
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|
2249 return NULL; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2250 return Expr(exp, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2251 } |
| 2252 case return_stmt: | |
| 2253 if (NCH(ch) == 1) | |
|
36786
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Martin v. Löwis <martin@v.loewis.de>
parents:
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diff
changeset
|
2254 return Return(NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2255 else { |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2256 expr_ty expression = ast_for_testlist(c, CHILD(ch, 1)); |
| 35742 | 2257 if (!expression) |
| 2258 return NULL; | |
|
36786
57322cb2ca11
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Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2259 return Return(expression, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2260 } |
| 2261 case raise_stmt: | |
| 2262 if (NCH(ch) == 1) | |
|
43102
981ecc526703
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Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2263 return Raise(NULL, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
|
981ecc526703
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Collin Winter <collinw@gmail.com>
parents:
42597
diff
changeset
|
2264 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
|
2265 expr_ty cause = NULL; |
| 35742 | 2266 expr_ty expression = ast_for_expr(c, CHILD(ch, 1)); |
| 2267 if (!expression) | |
| 2268 return NULL; | |
|
43102
981ecc526703
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diff
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|
2269 if (NCH(ch) == 4) { |
|
981ecc526703
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parents:
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diff
changeset
|
2270 cause = ast_for_expr(c, CHILD(ch, 3)); |
|
981ecc526703
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|
2271 if (!cause) |
|
981ecc526703
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diff
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|
2272 return NULL; |
|
981ecc526703
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diff
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|
2273 } |
|
981ecc526703
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diff
changeset
|
2274 return Raise(expression, cause, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2275 } |
| 2276 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2277 PyErr_Format(PyExc_SystemError, |
| 35742 | 2278 "unexpected flow_stmt: %d", TYPE(ch)); |
| 2279 return NULL; | |
| 2280 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2281 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2282 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
|
2283 return NULL; |
| 35742 | 2284 } |
| 2285 | |
| 2286 static alias_ty | |
|
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|
2287 alias_for_import_name(struct compiling *c, const node *n, int store) |
| 35742 | 2288 { |
| 2289 /* | |
|
36742
658f8ff2a442
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Thomas Wouters <thomas@python.org>
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|
2290 import_as_name: NAME ['as' NAME] |
|
658f8ff2a442
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|
2291 dotted_as_name: dotted_name ['as' NAME] |
| 35742 | 2292 dotted_name: NAME ('.' NAME)* |
| 2293 */ | |
|
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|
2294 identifier str, name; |
|
36065
ea083efdc96c
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parents:
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|
2295 |
| 35742 | 2296 loop: |
| 2297 switch (TYPE(n)) { | |
|
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|
2298 case import_as_name: { |
|
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|
2299 node *name_node = CHILD(n, 0); |
|
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|
2300 str = NULL; |
|
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|
2301 name = NEW_IDENTIFIER(name_node); |
|
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|
2302 if (!name) |
|
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|
2303 return NULL; |
|
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|
2304 if (NCH(n) == 3) { |
|
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|
2305 node *str_node = CHILD(n, 2); |
|
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|
2306 str = NEW_IDENTIFIER(str_node); |
|
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|
2307 if (!str) |
|
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|
2308 return NULL; |
|
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|
2309 if (store && forbidden_name(str, str_node, 0)) |
|
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|
2310 return NULL; |
|
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|
2311 } |
|
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2312 else { |
|
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Benjamin Peterson <benjamin@python.org>
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|
2313 if (forbidden_name(name, name_node, 0)) |
|
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|
2314 return NULL; |
|
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|
2315 } |
|
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|
2316 return alias(name, str, c->c_arena); |
|
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|
2317 } |
| 35742 | 2318 case dotted_as_name: |
| 2319 if (NCH(n) == 1) { | |
| 2320 n = CHILD(n, 0); | |
| 2321 goto loop; | |
| 2322 } | |
| 2323 else { | |
|
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|
2324 node *asname_node = CHILD(n, 2); |
|
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
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|
2325 alias_ty a = alias_for_import_name(c, CHILD(n, 0), 0); |
|
39610
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
changeset
|
2326 if (!a) |
|
3674f20ac781
Merge current trunk into p3yk. This includes the PyNumber_Index API change,
Thomas Wouters <thomas@python.org>
parents:
39442
diff
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|
2327 return NULL; |
| 35742 | 2328 assert(!a->asname); |
|
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|
2329 a->asname = NEW_IDENTIFIER(asname_node); |
|
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|
2330 if (!a->asname) |
|
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|
2331 return NULL; |
|
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Benjamin Peterson <benjamin@python.org>
parents:
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|
2332 if (forbidden_name(a->asname, asname_node, 0)) |
|
54918
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|
2333 return NULL; |
| 35742 | 2334 return a; |
| 2335 } | |
| 2336 break; | |
| 2337 case dotted_name: | |
|
49844
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|
2338 if (NCH(n) == 1) { |
|
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|
2339 node *name_node = CHILD(n, 0); |
|
0704f15b4682
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|
2340 name = NEW_IDENTIFIER(name_node); |
|
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|
2341 if (!name) |
|
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|
2342 return NULL; |
|
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|
2343 if (store && forbidden_name(name, name_node, 0)) |
|
54918
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|
2344 return NULL; |
|
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|
2345 return alias(name, NULL, c->c_arena); |
|
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|
2346 } |
| 35742 | 2347 else { |
| 2348 /* 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
|
2349 int i; |
|
36241
557e9b6ee7e1
alias_for_import_name(): Dueling compiler warnings ;-)
Tim Peters <tim.peters@gmail.com>
parents:
36231
diff
changeset
|
2350 size_t len; |
| 35742 | 2351 char *s; |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2352 PyObject *uni; |
| 35742 | 2353 |
| 2354 len = 0; | |
| 2355 for (i = 0; i < NCH(n); i += 2) | |
| 2356 /* length of string plus one for the dot */ | |
| 2357 len += strlen(STR(CHILD(n, i))) + 1; | |
| 2358 len--; /* the last name doesn't have a dot */ | |
|
47301
23ab586c427a
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diff
changeset
|
2359 str = PyBytes_FromStringAndSize(NULL, len); |
| 35742 | 2360 if (!str) |
| 2361 return NULL; | |
|
47301
23ab586c427a
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Christian Heimes <christian@cheimes.de>
parents:
46664
diff
changeset
|
2362 s = PyBytes_AS_STRING(str); |
| 35742 | 2363 if (!s) |
| 2364 return NULL; | |
| 2365 for (i = 0; i < NCH(n); i += 2) { | |
| 2366 char *sch = STR(CHILD(n, i)); | |
| 2367 strcpy(s, STR(CHILD(n, i))); | |
| 2368 s += strlen(sch); | |
| 2369 *s++ = '.'; | |
| 2370 } | |
| 2371 --s; | |
| 2372 *s = '\0'; | |
|
47301
23ab586c427a
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Christian Heimes <christian@cheimes.de>
parents:
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diff
changeset
|
2373 uni = PyUnicode_DecodeUTF8(PyBytes_AS_STRING(str), |
|
23ab586c427a
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parents:
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diff
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|
2374 PyBytes_GET_SIZE(str), |
|
42013
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|
2375 NULL); |
|
cd125fe83051
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|
2376 Py_DECREF(str); |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2377 if (!uni) |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2378 return NULL; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2379 str = uni; |
|
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2380 PyUnicode_InternInPlace(&str); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2381 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
|
2382 return alias(str, NULL, c->c_arena); |
| 35742 | 2383 } |
| 2384 break; | |
| 2385 case STAR: | |
|
42013
cd125fe83051
Make identifiers str (not str8) objects throughout.
Martin v. Löwis <martin@v.loewis.de>
parents:
41969
diff
changeset
|
2386 str = PyUnicode_InternFromString("*"); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2387 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
|
2388 return alias(str, NULL, c->c_arena); |
| 35742 | 2389 default: |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2390 PyErr_Format(PyExc_SystemError, |
| 35742 | 2391 "unexpected import name: %d", TYPE(n)); |
| 2392 return NULL; | |
| 2393 } | |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2394 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2395 PyErr_SetString(PyExc_SystemError, "unhandled import name condition"); |
| 35742 | 2396 return NULL; |
| 2397 } | |
| 2398 | |
| 2399 static stmt_ty | |
| 2400 ast_for_import_stmt(struct compiling *c, const node *n) | |
| 2401 { | |
| 2402 /* | |
| 2403 import_stmt: import_name | import_from | |
| 2404 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
|
2405 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
|
2406 'import' ('*' | '(' import_as_names ')' | import_as_names) |
| 35742 | 2407 */ |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2408 int lineno; |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2409 int col_offset; |
| 35742 | 2410 int i; |
| 2411 asdl_seq *aliases; | |
| 2412 | |
| 2413 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
|
2414 lineno = LINENO(n); |
|
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2415 col_offset = n->n_col_offset; |
| 35742 | 2416 n = CHILD(n, 0); |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2417 if (TYPE(n) == import_name) { |
| 35742 | 2418 n = CHILD(n, 1); |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2419 REQ(n, dotted_as_names); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2420 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
|
2421 if (!aliases) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2422 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2423 for (i = 0; i < NCH(n); i += 2) { |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2424 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2425 if (!import_alias) |
| 35742 | 2426 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2427 asdl_seq_SET(aliases, i / 2, import_alias); |
| 35742 | 2428 } |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2429 return Import(aliases, lineno, col_offset, c->c_arena); |
| 35742 | 2430 } |
|
36682
52cbc447e1c9
And some more cleanup.
Thomas Wouters <thomas@python.org>
parents:
36681
diff
changeset
|
2431 else if (TYPE(n) == import_from) { |
| 35742 | 2432 int n_children; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2433 int idx, ndots = 0; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2434 alias_ty mod = NULL; |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2435 identifier modname = NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2436 |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2437 /* 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
|
2438 optional module name */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2439 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
|
2440 if (TYPE(CHILD(n, idx)) == dotted_name) { |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2441 mod = alias_for_import_name(c, CHILD(n, idx), 0); |
|
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2442 if (!mod) |
|
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2443 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2444 idx++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2445 break; |
|
41235
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2446 } 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
|
2447 /* 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
|
2448 ndots += 3; |
|
6c8c33a43a15
"from ... import x" should not be a syntax error... make
Georg Brandl <georg@python.org>
parents:
41230
diff
changeset
|
2449 continue; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2450 } 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
|
2451 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2452 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2453 ndots++; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2454 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2455 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
|
2456 switch (TYPE(CHILD(n, idx))) { |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2457 case STAR: |
|
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2458 /* from ... import * */ |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2459 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2460 n_children = 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2461 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2462 case LPAR: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2463 /* from ... import (x, y, z) */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2464 n = CHILD(n, idx + 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2465 n_children = NCH(n); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2466 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2467 case import_as_names: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2468 /* from ... import x, y, z */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2469 n = CHILD(n, idx); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2470 n_children = NCH(n); |
|
36681
e9f0db429f2b
Clean up from-import handling.
Thomas Wouters <thomas@python.org>
parents:
36679
diff
changeset
|
2471 if (n_children % 2 == 0) { |
| 35742 | 2472 ast_error(n, "trailing comma not allowed without" |
| 2473 " surrounding parentheses"); | |
| 2474 return NULL; | |
| 2475 } | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2476 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2477 default: |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2478 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
|
2479 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2480 } |
| 35742 | 2481 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2482 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
|
2483 if (!aliases) |
| 35742 | 2484 return NULL; |
| 2485 | |
| 2486 /* 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
|
2487 if (TYPE(n) == STAR) { |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2488 alias_ty import_alias = alias_for_import_name(c, n, 1); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2489 if (!import_alias) |
| 35742 | 2490 return NULL; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2491 asdl_seq_SET(aliases, 0, import_alias); |
| 35742 | 2492 } |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2493 else { |
|
40450
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2494 for (i = 0; i < NCH(n); i += 2) { |
|
54918
0704f15b4682
Merged revisions 73376,73393,73398,73400,73404-73405,73409,73419-73421,73432,73457,73460,73485-73486,73488-73489,73501-73502,73513-73514 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents:
54703
diff
changeset
|
2495 alias_ty import_alias = alias_for_import_name(c, CHILD(n, i), 1); |
|
36718
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2496 if (!import_alias) |
|
45e6f901902c
Remove asdl_seq_APPEND() and simplify asdl seq implementation.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
36712
diff
changeset
|
2497 return NULL; |
|
40450
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Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
2498 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
|
2499 } |
| 35742 | 2500 } |
|
36712
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2501 if (mod != NULL) |
|
5c36c222e7ca
SF patch #1438387, PEP 328: relative and absolute imports.
Thomas Wouters <thomas@python.org>
parents:
36695
diff
changeset
|
2502 modname = mod->name; |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2503 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
|
2504 c->c_arena); |
| 35742 | 2505 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2506 PyErr_Format(PyExc_SystemError, |
| 35742 | 2507 "unknown import statement: starts with command '%s'", |
| 2508 STR(CHILD(n, 0))); | |
| 2509 return NULL; | |
| 2510 } | |
| 2511 | |
| 2512 static stmt_ty | |
| 2513 ast_for_global_stmt(struct compiling *c, const node *n) | |
| 2514 { | |
| 2515 /* global_stmt: 'global' NAME (',' NAME)* */ | |
| 2516 identifier name; | |
| 2517 asdl_seq *s; | |
| 2518 int i; | |
| 2519 | |
| 2520 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
|
2521 s = asdl_seq_new(NCH(n) / 2, c->c_arena); |
| 35742 | 2522 if (!s) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2523 return NULL; |
| 35742 | 2524 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
|
2525 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
|
2526 if (!name) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2527 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2528 asdl_seq_SET(s, i / 2, name); |
| 35742 | 2529 } |
|
36786
57322cb2ca11
Patch #1440601: Add col_offset attribute to AST nodes.
Martin v. Löwis <martin@v.loewis.de>
parents:
36780
diff
changeset
|
2530 return Global(s, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2531 } |
| 2532 | |
| 2533 static stmt_ty | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2534 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
|
2535 { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2536 /* nonlocal_stmt: 'nonlocal' NAME (',' NAME)* */ |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2537 identifier name; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2538 asdl_seq *s; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2539 int i; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2540 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2541 REQ(n, nonlocal_stmt); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2542 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
|
2543 if (!s) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2544 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2545 for (i = 1; i < NCH(n); i += 2) { |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2546 name = NEW_IDENTIFIER(CHILD(n, i)); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2547 if (!name) |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2548 return NULL; |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2549 asdl_seq_SET(s, i / 2, name); |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2550 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2551 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
|
2552 } |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2553 |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
2554 static stmt_ty |
| 35742 | 2555 ast_for_assert_stmt(struct compiling *c, const node *n) |
| 2556 { | |
| 2557 /* assert_stmt: 'assert' test [',' test] */ | |
| 2558 REQ(n, assert_stmt); | |
| 2559 if (NCH(n) == 2) { | |
| 2560 expr_ty expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2561 if (!expression) | |
| 2562 return NULL; | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2563 return Assert(expression, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2564 } |
| 2565 else if (NCH(n) == 4) { | |
| 2566 expr_ty expr1, expr2; | |
| 2567 | |
| 2568 expr1 = ast_for_expr(c, CHILD(n, 1)); | |
| 2569 if (!expr1) | |
| 2570 return NULL; | |
| 2571 expr2 = ast_for_expr(c, CHILD(n, 3)); | |
| 2572 if (!expr2) | |
| 2573 return NULL; | |
| 2574 | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2575 return Assert(expr1, expr2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2576 } |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
2577 PyErr_Format(PyExc_SystemError, |
| 35742 | 2578 "improper number of parts to 'assert' statement: %d", |
| 2579 NCH(n)); | |
| 2580 return NULL; | |
| 2581 } | |
| 2582 | |
| 2583 static asdl_seq * | |
| 2584 ast_for_suite(struct compiling *c, const node *n) | |
| 2585 { | |
| 2586 /* 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
|
2587 asdl_seq *seq; |
| 35742 | 2588 stmt_ty s; |
| 2589 int i, total, num, end, pos = 0; | |
| 2590 node *ch; | |
| 2591 | |
| 2592 REQ(n, suite); | |
| 2593 | |
| 2594 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
|
2595 seq = asdl_seq_new(total, c->c_arena); |
| 35742 | 2596 if (!seq) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2597 return NULL; |
| 35742 | 2598 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
|
2599 n = CHILD(n, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2600 /* 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
|
2601 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
|
2602 */ |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2603 end = NCH(n) - 1; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2604 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
|
2605 end--; |
| 35742 | 2606 /* 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
|
2607 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
|
2608 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2609 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
|
2610 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2611 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2612 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
|
2613 } |
| 35742 | 2614 } |
| 2615 else { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2616 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
|
2617 ch = CHILD(n, i); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2618 REQ(ch, stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2619 num = num_stmts(ch); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2620 if (num == 1) { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2621 /* 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
|
2622 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
|
2623 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2624 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2625 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
|
2626 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2627 else { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2628 int j; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2629 ch = CHILD(ch, 0); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2630 REQ(ch, simple_stmt); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2631 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
|
2632 /* 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
|
2633 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
|
2634 assert((j + 1) == NCH(ch)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2635 break; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2636 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2637 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
|
2638 if (!s) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2639 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2640 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
|
2641 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2642 } |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2643 } |
| 35742 | 2644 } |
| 2645 assert(pos == seq->size); | |
| 2646 return seq; | |
| 2647 } | |
| 2648 | |
| 2649 static stmt_ty | |
| 2650 ast_for_if_stmt(struct compiling *c, const node *n) | |
| 2651 { | |
| 2652 /* if_stmt: 'if' test ':' suite ('elif' test ':' suite)* | |
| 2653 ['else' ':' suite] | |
| 2654 */ | |
| 2655 char *s; | |
| 2656 | |
| 2657 REQ(n, if_stmt); | |
| 2658 | |
| 2659 if (NCH(n) == 4) { | |
| 2660 expr_ty expression; | |
| 2661 asdl_seq *suite_seq; | |
| 2662 | |
| 2663 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2664 if (!expression) | |
| 2665 return NULL; | |
| 2666 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
|
2667 if (!suite_seq) |
| 35742 | 2668 return NULL; |
| 2669 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2670 return If(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2671 c->c_arena); |
| 35742 | 2672 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2673 |
| 35742 | 2674 s = STR(CHILD(n, 4)); |
| 2675 /* s[2], the third character in the string, will be | |
| 2676 's' for el_s_e, or | |
| 2677 'i' for el_i_f | |
| 2678 */ | |
| 2679 if (s[2] == 's') { | |
| 2680 expr_ty expression; | |
| 2681 asdl_seq *seq1, *seq2; | |
| 2682 | |
| 2683 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2684 if (!expression) | |
| 2685 return NULL; | |
| 2686 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
|
2687 if (!seq1) |
| 35742 | 2688 return NULL; |
| 2689 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
|
2690 if (!seq2) |
| 35742 | 2691 return NULL; |
| 2692 | |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2693 return If(expression, seq1, seq2, LINENO(n), n->n_col_offset, |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2694 c->c_arena); |
| 35742 | 2695 } |
| 2696 else if (s[2] == 'i') { | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2697 int i, n_elif, has_else = 0; |
|
41554
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2698 expr_ty expression; |
|
06145fbc7ab9
Merged revisions 53952-54987 via svnmerge from
Guido van Rossum <guido@python.org>
parents:
41509
diff
changeset
|
2699 asdl_seq *suite_seq; |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2700 asdl_seq *orelse = NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2701 n_elif = NCH(n) - 4; |
| 35742 | 2702 /* must reference the child n_elif+1 since 'else' token is third, |
| 2703 not fourth, child from the end. */ | |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2704 if (TYPE(CHILD(n, (n_elif + 1))) == NAME |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2705 && STR(CHILD(n, (n_elif + 1)))[2] == 's') { |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2706 has_else = 1; |
|
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|
2707 n_elif -= 3; |
|
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|
2708 } |
|
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|
2709 n_elif /= 4; |
| 35742 | 2710 |
|
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|
2711 if (has_else) { |
|
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|
2712 asdl_seq *suite_seq2; |
| 35742 | 2713 |
|
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|
2714 orelse = asdl_seq_new(1, c->c_arena); |
|
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Four months of trunk changes (including a few releases...)
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|
2715 if (!orelse) |
|
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Four months of trunk changes (including a few releases...)
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|
2716 return NULL; |
| 35742 | 2717 expression = ast_for_expr(c, CHILD(n, NCH(n) - 6)); |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2718 if (!expression) |
| 35742 | 2719 return NULL; |
|
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|
2720 suite_seq = ast_for_suite(c, CHILD(n, NCH(n) - 4)); |
|
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|
2721 if (!suite_seq) |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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|
2722 return NULL; |
|
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|
2723 suite_seq2 = ast_for_suite(c, CHILD(n, NCH(n) - 1)); |
|
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|
2724 if (!suite_seq2) |
| 35742 | 2725 return NULL; |
| 2726 | |
|
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|
2727 asdl_seq_SET(orelse, 0, |
|
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|
2728 If(expression, suite_seq, suite_seq2, |
|
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|
2729 LINENO(CHILD(n, NCH(n) - 6)), |
|
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|
2730 CHILD(n, NCH(n) - 6)->n_col_offset, |
|
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|
2731 c->c_arena)); |
|
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|
2732 /* the just-created orelse handled the last elif */ |
|
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|
2733 n_elif--; |
|
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|
2734 } |
| 35742 | 2735 |
|
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|
2736 for (i = 0; i < n_elif; i++) { |
|
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Four months of trunk changes (including a few releases...)
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|
2737 int off = 5 + (n_elif - i - 1) * 4; |
|
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Four months of trunk changes (including a few releases...)
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|
2738 asdl_seq *newobj = asdl_seq_new(1, c->c_arena); |
|
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|
2739 if (!newobj) |
|
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Four months of trunk changes (including a few releases...)
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|
2740 return NULL; |
| 35742 | 2741 expression = ast_for_expr(c, CHILD(n, off)); |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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|
2742 if (!expression) |
| 35742 | 2743 return NULL; |
| 2744 suite_seq = ast_for_suite(c, CHILD(n, off + 2)); | |
|
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Cleanup a bit and make things more consistent.
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parents:
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|
2745 if (!suite_seq) |
| 35742 | 2746 return NULL; |
| 2747 | |
|
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|
2748 asdl_seq_SET(newobj, 0, |
|
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|
2749 If(expression, suite_seq, orelse, |
|
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|
2750 LINENO(CHILD(n, off)), |
|
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|
2751 CHILD(n, off)->n_col_offset, c->c_arena)); |
|
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|
2752 orelse = newobj; |
|
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Four months of trunk changes (including a few releases...)
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|
2753 } |
|
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|
2754 expression = ast_for_expr(c, CHILD(n, 1)); |
|
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|
2755 if (!expression) |
|
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|
2756 return NULL; |
|
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|
2757 suite_seq = ast_for_suite(c, CHILD(n, 3)); |
|
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|
2758 if (!suite_seq) |
|
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|
2759 return NULL; |
|
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|
2760 return If(expression, suite_seq, orelse, |
|
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|
2761 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2762 } |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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|
2763 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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|
2764 PyErr_Format(PyExc_SystemError, |
|
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Cleanup a bit and make things more consistent.
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parents:
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diff
changeset
|
2765 "unexpected token in 'if' statement: %s", s); |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2766 return NULL; |
| 35742 | 2767 } |
| 2768 | |
| 2769 static stmt_ty | |
| 2770 ast_for_while_stmt(struct compiling *c, const node *n) | |
| 2771 { | |
| 2772 /* while_stmt: 'while' test ':' suite ['else' ':' suite] */ | |
| 2773 REQ(n, while_stmt); | |
| 2774 | |
| 2775 if (NCH(n) == 4) { | |
| 2776 expr_ty expression; | |
| 2777 asdl_seq *suite_seq; | |
| 2778 | |
| 2779 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2780 if (!expression) | |
| 2781 return NULL; | |
| 2782 suite_seq = ast_for_suite(c, CHILD(n, 3)); | |
|
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Cleanup a bit and make things more consistent.
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|
2783 if (!suite_seq) |
| 35742 | 2784 return NULL; |
|
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|
2785 return While(expression, suite_seq, NULL, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2786 } |
| 2787 else if (NCH(n) == 7) { | |
| 2788 expr_ty expression; | |
| 2789 asdl_seq *seq1, *seq2; | |
| 2790 | |
| 2791 expression = ast_for_expr(c, CHILD(n, 1)); | |
| 2792 if (!expression) | |
| 2793 return NULL; | |
| 2794 seq1 = ast_for_suite(c, CHILD(n, 3)); | |
|
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
2795 if (!seq1) |
| 35742 | 2796 return NULL; |
| 2797 seq2 = ast_for_suite(c, CHILD(n, 6)); | |
|
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
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|
2798 if (!seq2) |
| 35742 | 2799 return NULL; |
| 2800 | |
|
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|
2801 return While(expression, seq1, seq2, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2802 } |
|
36072
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Cleanup a bit and make things more consistent.
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parents:
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|
2803 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
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parents:
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changeset
|
2804 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2805 "wrong number of tokens for 'while' statement: %d", |
|
de16a85c3b4c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2806 NCH(n)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2807 return NULL; |
| 35742 | 2808 } |
| 2809 | |
| 2810 static stmt_ty | |
| 2811 ast_for_for_stmt(struct compiling *c, const node *n) | |
| 2812 { | |
|
36072
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Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
2813 asdl_seq *_target, *seq = NULL, *suite_seq; |
| 35742 | 2814 expr_ty expression; |
|
55912
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|
2815 expr_ty target, first; |
|
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changeset
|
2816 const node *node_target; |
| 35742 | 2817 /* for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite] */ |
| 2818 REQ(n, for_stmt); | |
| 2819 | |
| 2820 if (NCH(n) == 9) { | |
|
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|
2821 seq = ast_for_suite(c, CHILD(n, 8)); |
| 35742 | 2822 if (!seq) |
| 2823 return NULL; | |
| 2824 } | |
| 2825 | |
|
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|
2826 node_target = CHILD(n, 1); |
|
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changeset
|
2827 _target = ast_for_exprlist(c, node_target, Store); |
|
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|
2828 if (!_target) |
| 35742 | 2829 return NULL; |
|
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|
2830 /* Check the # of children rather than the length of _target, since |
|
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|
2831 for x, in ... has 1 element in _target, but still requires a Tuple. */ |
|
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|
2832 first = (expr_ty)asdl_seq_GET(_target, 0); |
|
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|
2833 if (NCH(node_target) == 1) |
|
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|
2834 target = first; |
| 35742 | 2835 else |
|
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|
2836 target = Tuple(_target, Store, first->lineno, first->col_offset, c->c_arena); |
| 35742 | 2837 |
|
35798
857f68fba275
Write a separate ast_for_testlist_gexp() function instead of overloading
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents:
35771
diff
changeset
|
2838 expression = ast_for_testlist(c, CHILD(n, 3)); |
|
36072
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2839 if (!expression) |
| 35742 | 2840 return NULL; |
| 2841 suite_seq = ast_for_suite(c, CHILD(n, 5)); | |
|
36072
de16a85c3b4c
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Neal Norwitz <nnorwitz@gmail.com>
parents:
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diff
changeset
|
2842 if (!suite_seq) |
| 35742 | 2843 return NULL; |
| 2844 | |
|
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
|
2845 return For(target, expression, suite_seq, seq, LINENO(n), n->n_col_offset, |
|
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2846 c->c_arena); |
| 35742 | 2847 } |
| 2848 | |
| 2849 static excepthandler_ty | |
| 2850 ast_for_except_clause(struct compiling *c, const node *exc, node *body) | |
| 2851 { | |
|
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changeset
|
2852 /* except_clause: 'except' [test ['as' test]] */ |
| 35742 | 2853 REQ(exc, except_clause); |
| 2854 REQ(body, suite); | |
| 2855 | |
| 2856 if (NCH(exc) == 1) { | |
| 2857 asdl_seq *suite_seq = ast_for_suite(c, body); | |
| 2858 if (!suite_seq) | |
| 2859 return NULL; | |
| 2860 | |
|
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diff
changeset
|
2861 return ExceptHandler(NULL, NULL, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
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diff
changeset
|
2862 exc->n_col_offset, c->c_arena); |
| 35742 | 2863 } |
| 2864 else if (NCH(exc) == 2) { | |
| 2865 expr_ty expression; | |
| 2866 asdl_seq *suite_seq; | |
| 2867 | |
| 2868 expression = ast_for_expr(c, CHILD(exc, 1)); | |
| 2869 if (!expression) | |
| 2870 return NULL; | |
| 2871 suite_seq = ast_for_suite(c, body); | |
|
36072
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Neal Norwitz <nnorwitz@gmail.com>
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diff
changeset
|
2872 if (!suite_seq) |
| 35742 | 2873 return NULL; |
| 2874 | |
|
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|
2875 return ExceptHandler(expression, NULL, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
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Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2876 exc->n_col_offset, c->c_arena); |
| 35742 | 2877 } |
| 2878 else if (NCH(exc) == 4) { | |
| 2879 asdl_seq *suite_seq; | |
| 2880 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
|
2881 identifier e = NEW_IDENTIFIER(CHILD(exc, 3)); |
|
40450
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|
2882 if (!e) |
| 35742 | 2883 return NULL; |
|
54954
c45e331238ae
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Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
2884 if (forbidden_name(e, CHILD(exc, 3), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
2885 return NULL; |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2886 expression = ast_for_expr(c, CHILD(exc, 1)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2887 if (!expression) |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2888 return NULL; |
| 35742 | 2889 suite_seq = ast_for_suite(c, body); |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2890 if (!suite_seq) |
| 35742 | 2891 return NULL; |
| 2892 | |
|
46231
81ee270a6eb5
Merged revisions 62047 via svnmerge from
Neal Norwitz <nnorwitz@gmail.com>
parents:
46120
diff
changeset
|
2893 return ExceptHandler(expression, e, suite_seq, LINENO(exc), |
|
37879
f731859e9b3b
Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents:
36877
diff
changeset
|
2894 exc->n_col_offset, c->c_arena); |
| 35742 | 2895 } |
|
36072
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2896 |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2897 PyErr_Format(PyExc_SystemError, |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2898 "wrong number of children for 'except' clause: %d", |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2899 NCH(exc)); |
|
de16a85c3b4c
Cleanup a bit and make things more consistent.
Neal Norwitz <nnorwitz@gmail.com>
parents:
36066
diff
changeset
|
2900 return NULL; |
| 35742 | 2901 } |
| 2902 | |
| 2903 static stmt_ty | |
| 2904 ast_for_try_stmt(struct compiling *c, const node *n) | |
| 2905 { | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2906 const int nch = NCH(n); |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2907 int n_except = (nch - 3)/3; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2908 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
|
2909 |
| 35742 | 2910 REQ(n, try_stmt); |
| 2911 | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2912 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
|
2913 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
|
2914 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2915 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2916 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
|
2917 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
|
2918 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
|
2919 /* 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
|
2920 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
|
2921 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
|
2922 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
|
2923 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
|
2924 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2925 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2926 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2927 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2928 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
|
2929 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
|
2930 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2931 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2932 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2933 else { |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2934 /* 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
|
2935 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
|
2936 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
|
2937 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
|
2938 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2939 n_except--; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2940 } |
| 35742 | 2941 } |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2942 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
|
2943 ast_error(n, "malformed 'try' statement"); |
| 35742 | 2944 return NULL; |
| 2945 } | |
|
36066
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2946 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2947 if (n_except > 0) { |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2948 int i; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2949 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
|
2950 /* 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
|
2951 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
|
2952 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
|
2953 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2954 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2955 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
|
2956 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
|
2957 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
|
2958 if (!e) |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2959 return NULL; |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2960 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
|
2961 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2962 |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2963 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
|
2964 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
|
2965 if (!finally) |
|
40450
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2966 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
|
2967 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2968 /* 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
|
2969 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
|
2970 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
|
2971 if (body == NULL) |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2972 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2973 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
|
2974 } |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2975 |
|
719ba02d2e2c
SF patch #1355913, PEP 341 - Unification of try/except and try/finally
Neal Norwitz <nnorwitz@gmail.com>
parents:
36065
diff
changeset
|
2976 /* 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
|
2977 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
|
2978 return TryFinally(body, finally, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 2979 } |
| 2980 | |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2981 /* with_item: test ['as' expr] */ |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2982 static stmt_ty |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2983 ast_for_with_item(struct compiling *c, const node *n, asdl_seq *content) |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2984 { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2985 expr_ty context_expr, optional_vars = NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2986 |
|
54338
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2987 REQ(n, with_item); |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2988 context_expr = ast_for_expr(c, CHILD(n, 0)); |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2989 if (NCH(n) == 3) { |
|
287ce30d08b5
Merged revisions 72924 via svnmerge from
Georg Brandl <georg@python.org>
parents:
53707
diff
changeset
|
2990 optional_vars = ast_for_expr(c, CHILD(n, 2)); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2991 |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2992 if (!optional_vars) { |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2993 return NULL; |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2994 } |
|
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
|
2995 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
|
2996 return NULL; |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
2997 } |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2998 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
2999 |
|
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|
3000 return With(context_expr, optional_vars, content, LINENO(n), |
|
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|
3001 n->n_col_offset, c->c_arena); |
|
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|
3002 } |
|
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|
3003 |
|
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changeset
|
3004 /* with_stmt: 'with' with_item (',' with_item)* ':' suite */ |
|
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|
3005 static stmt_ty |
|
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|
3006 ast_for_with_stmt(struct compiling *c, const node *n) |
|
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|
3007 { |
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|
3008 int i; |
|
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|
3009 stmt_ty ret; |
|
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|
3010 asdl_seq *inner; |
|
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|
3011 |
|
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|
3012 REQ(n, with_stmt); |
|
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|
3013 |
|
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|
3014 /* process the with items inside-out */ |
|
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|
3015 i = NCH(n) - 1; |
|
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|
3016 /* the suite of the innermost with item is the suite of the with stmt */ |
|
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|
3017 inner = ast_for_suite(c, CHILD(n, i)); |
|
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changeset
|
3018 if (!inner) |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3019 return NULL; |
|
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|
3020 |
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|
3021 for (;;) { |
|
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|
3022 i -= 2; |
|
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|
3023 ret = ast_for_with_item(c, CHILD(n, i), inner); |
|
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|
3024 if (!ret) |
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|
3025 return NULL; |
|
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|
3026 /* was this the last item? */ |
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|
3027 if (i == 1) |
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|
3028 break; |
|
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|
3029 /* if not, wrap the result so far in a new sequence */ |
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|
3030 inner = asdl_seq_new(1, c->c_arena); |
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|
3031 if (!inner) |
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|
3032 return NULL; |
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|
3033 asdl_seq_SET(inner, 0, ret); |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
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diff
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|
3034 } |
|
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3035 |
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|
3036 return ret; |
|
36695
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3037 } |
|
b6d2f6fd3e11
PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents:
36686
diff
changeset
|
3038 |
| 35742 | 3039 static stmt_ty |
|
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|
3040 ast_for_classdef(struct compiling *c, const node *n, asdl_seq *decorator_seq) |
| 35742 | 3041 { |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
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|
3042 /* classdef: 'class' NAME ['(' arglist ')'] ':' suite */ |
|
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|
3043 PyObject *classname; |
|
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parents:
40965
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changeset
|
3044 asdl_seq *s; |
|
49852
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3045 expr_ty call; |
|
41226
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
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changeset
|
3046 |
| 35742 | 3047 REQ(n, classdef); |
| 3048 | |
|
41226
19f7ff443718
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Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3049 if (NCH(n) == 4) { /* class NAME ':' suite */ |
| 35742 | 3050 s = ast_for_suite(c, CHILD(n, 3)); |
| 3051 if (!s) | |
| 3052 return NULL; | |
|
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|
3053 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3054 if (!classname) |
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|
3055 return NULL; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3056 if (forbidden_name(classname, CHILD(n, 3), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
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parents:
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|
3057 return NULL; |
|
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|
3058 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
|
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|
3059 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3060 } |
|
41226
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parents:
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|
3061 |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
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parents:
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changeset
|
3062 if (TYPE(CHILD(n, 3)) == RPAR) { /* class NAME '(' ')' ':' suite */ |
|
40450
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
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changeset
|
3063 s = ast_for_suite(c, CHILD(n,5)); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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|
3064 if (!s) |
|
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3065 return NULL; |
|
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|
3066 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3067 if (!classname) |
|
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|
3068 return NULL; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3069 if (forbidden_name(classname, CHILD(n, 3), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
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|
3070 return NULL; |
|
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|
3071 return ClassDef(classname, NULL, NULL, NULL, NULL, s, decorator_seq, |
|
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|
3072 LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3073 } |
| 3074 | |
|
41226
19f7ff443718
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Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3075 /* class NAME '(' arglist ')' ':' suite */ |
|
19f7ff443718
Implement PEP 3115 -- new metaclass syntax and semantics.
Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3076 /* build up a fake Call node so we can extract its pieces */ |
|
49852
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check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
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diff
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|
3077 { |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3078 PyObject *dummy_name; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
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|
3079 expr_ty dummy; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3080 dummy_name = NEW_IDENTIFIER(CHILD(n, 1)); |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3081 if (!dummy_name) |
|
30d01a5f517e
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Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3082 return NULL; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3083 dummy = Name(dummy_name, Load, LINENO(n), n->n_col_offset, c->c_arena); |
|
30d01a5f517e
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Benjamin Peterson <benjamin@python.org>
parents:
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diff
changeset
|
3084 call = ast_for_call(c, CHILD(n, 3), dummy); |
|
30d01a5f517e
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parents:
49847
diff
changeset
|
3085 if (!call) |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
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diff
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|
3086 return NULL; |
|
30d01a5f517e
check the return value of NEW_IDENTIFIER in some more places
Benjamin Peterson <benjamin@python.org>
parents:
49847
diff
changeset
|
3087 } |
| 35742 | 3088 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
|
3089 if (!s) |
| 35742 | 3090 return NULL; |
|
49844
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|
3091 classname = NEW_IDENTIFIER(CHILD(n, 1)); |
|
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|
3092 if (!classname) |
|
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|
3093 return NULL; |
|
54954
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3094 if (forbidden_name(classname, CHILD(n, 1), 0)) |
|
c45e331238ae
In most cases, the parser will protect True, False, and None from being assign to.
Benjamin Peterson <benjamin@python.org>
parents:
54918
diff
changeset
|
3095 return NULL; |
|
41226
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|
3096 |
|
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changeset
|
3097 return ClassDef(classname, call->v.Call.args, call->v.Call.keywords, |
|
41226
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Guido van Rossum <guido@python.org>
parents:
40965
diff
changeset
|
3098 call->v.Call.starargs, call->v.Call.kwargs, s, |
|
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changeset
|
3099 decorator_seq, LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3100 } |
| 3101 | |
| 3102 static stmt_ty | |
| 3103 ast_for_stmt(struct compiling *c, const node *n) | |
| 3104 { | |
| 3105 if (TYPE(n) == stmt) { | |
|
40450
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40215
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changeset
|
3106 assert(NCH(n) == 1); |
|
cc992d75d5b3
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parents:
40215
diff
changeset
|
3107 n = CHILD(n, 0); |
| 35742 | 3108 } |
| 3109 if (TYPE(n) == simple_stmt) { | |
|
40450
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Thomas Wouters <thomas@python.org>
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40215
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changeset
|
3110 assert(num_stmts(n) == 1); |
|
cc992d75d5b3
Four months of trunk changes (including a few releases...)
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parents:
40215
diff
changeset
|
3111 n = CHILD(n, 0); |
| 35742 | 3112 } |
| 3113 if (TYPE(n) == small_stmt) { | |
|
40529
54cd47788811
PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents:
40450
diff
changeset
|
3114 n = CHILD(n, 0); |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3115 /* small_stmt: expr_stmt | del_stmt | pass_stmt | flow_stmt |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
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parents:
40941
diff
changeset
|
3116 | import_stmt | global_stmt | nonlocal_stmt | assert_stmt |
|
40450
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|
3117 */ |
|
cc992d75d5b3
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Thomas Wouters <thomas@python.org>
parents:
40215
diff
changeset
|
3118 switch (TYPE(n)) { |
| 35742 | 3119 case expr_stmt: |
| 3120 return ast_for_expr_stmt(c, n); | |
| 3121 case del_stmt: | |
| 3122 return ast_for_del_stmt(c, n); | |
| 3123 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
|
3124 return Pass(LINENO(n), n->n_col_offset, c->c_arena); |
| 35742 | 3125 case flow_stmt: |
| 3126 return ast_for_flow_stmt(c, n); | |
| 3127 case import_stmt: | |
| 3128 return ast_for_import_stmt(c, n); | |
| 3129 case global_stmt: | |
| 3130 return ast_for_global_stmt(c, n); | |
|
40965
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3131 case nonlocal_stmt: |
|
30e5cb3a55ac
Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents:
40941
diff
changeset
|
3132 return ast_for_nonlocal_stmt(c, n); |
| 35742 | 3133 case assert_stmt: |
| 3134 return ast_for_assert_stmt(c, n); | |
| 3135 default: | |
|
35870
f531c05cd240
Convert all internal errors from Exception to SystemError
Neal Norwitz <nnorwitz@gmail.com>
parents:
35868
diff
changeset
|
3136 PyErr_Format(PyExc_SystemError, |
| 35742 | 3137 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3138 TYPE(n), NCH(n)); | |
| 3139 return NULL; | |
| 3140 } | |
| 3141 } | |
| 3142 else { | |
| 3143 /* compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | |
|
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3144 | funcdef | classdef | decorated |
|
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3145 */ |
|
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|
3146 node *ch = CHILD(n, 0); |
|
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|
3147 REQ(n, compound_stmt); |
|
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|
3148 switch (TYPE(ch)) { |
| 35742 | 3149 case if_stmt: |
| 3150 return ast_for_if_stmt(c, ch); | |
| 3151 case while_stmt: | |
| 3152 return ast_for_while_stmt(c, ch); | |
| 3153 case for_stmt: | |
| 3154 return ast_for_for_stmt(c, ch); | |
| 3155 case try_stmt: | |
| 3156 return ast_for_try_stmt(c, ch); | |
|
36695
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PEP 343 -- the with-statement.
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|
3157 case with_stmt: |
|
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3158 return ast_for_with_stmt(c, ch); |
| 35742 | 3159 case funcdef: |
|
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3160 return ast_for_funcdef(c, ch, NULL); |
| 35742 | 3161 case classdef: |
|
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3162 return ast_for_classdef(c, ch, NULL); |
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3163 case decorated: |
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3164 return ast_for_decorated(c, ch); |
| 35742 | 3165 default: |
|
35870
f531c05cd240
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Neal Norwitz <nnorwitz@gmail.com>
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|
3166 PyErr_Format(PyExc_SystemError, |
| 35742 | 3167 "unhandled small_stmt: TYPE=%d NCH=%d\n", |
| 3168 TYPE(n), NCH(n)); | |
| 3169 return NULL; | |
|
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3170 } |
| 35742 | 3171 } |
| 3172 } | |
| 3173 | |
| 3174 static PyObject * | |
|
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3175 parsenumber(struct compiling *c, const char *s) |
| 35742 | 3176 { |
|
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3177 const char *end; |
|
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3178 long x; |
|
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3179 double dx; |
|
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3180 Py_complex compl; |
|
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3181 int imflag; |
| 35742 | 3182 |
|
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3183 assert(s != NULL); |
|
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3184 errno = 0; |
|
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3185 end = s + strlen(s) - 1; |
|
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3186 imflag = *end == 'j' || *end == 'J'; |
|
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3187 if (s[0] == '0') { |
|
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3188 x = (long) PyOS_strtoul((char *)s, (char **)&end, 0); |
|
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3189 if (x < 0 && errno == 0) { |
|
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3190 return PyLong_FromString((char *)s, |
|
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|
3191 (char **)0, |
|
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|
3192 0); |
|
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3193 } |
|
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3194 } |
|
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3195 else |
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3196 x = PyOS_strtol((char *)s, (char **)&end, 0); |
|
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3197 if (*end == '\0') { |
|
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|
3198 if (errno != 0) |
|
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3199 return PyLong_FromString((char *)s, (char **)0, 0); |
|
44099
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Cleanup: Replaced most PyInt_ aliases with PyLong_ and disabled the aliases in intobject.h
Christian Heimes <christian@cheimes.de>
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|
3200 return PyLong_FromLong(x); |
|
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3201 } |
|
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|
3202 /* XXX Huge floats may silently fail */ |
|
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3203 if (imflag) { |
|
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|
3204 compl.real = 0.; |
|
53707
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|
3205 compl.imag = PyOS_string_to_double(s, (char **)&end, NULL); |
|
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|
3206 if (compl.imag == -1.0 && PyErr_Occurred()) |
|
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|
3207 return NULL; |
|
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|
3208 return PyComplex_FromCComplex(compl); |
|
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3209 } |
|
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3210 else |
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|
3211 { |
|
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|
3212 dx = PyOS_string_to_double(s, NULL, NULL); |
|
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|
3213 if (dx == -1.0 && PyErr_Occurred()) |
|
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|
3214 return NULL; |
|
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|
3215 return PyFloat_FromDouble(dx); |
|
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3216 } |
| 35742 | 3217 } |
| 3218 | |
| 3219 static PyObject * | |
|
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|
3220 decode_utf8(struct compiling *c, const char **sPtr, const char *end, char* encoding) |
| 35742 | 3221 { |
|
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3222 PyObject *u, *v; |
|
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|
3223 char *s, *t; |
|
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|
3224 t = s = (char *)*sPtr; |
|
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|
3225 /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
|
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|
3226 while (s < end && (*s & 0x80)) s++; |
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|
3227 *sPtr = s; |
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|
3228 u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
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|
3229 if (u == NULL) |
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|
3230 return NULL; |
|
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|
3231 v = PyUnicode_AsEncodedString(u, encoding, NULL); |
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|
3232 Py_DECREF(u); |
|
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|
3233 return v; |
| 35742 | 3234 } |
| 3235 | |
| 3236 static PyObject * | |
|
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|
3237 decode_unicode(struct compiling *c, const char *s, size_t len, int rawmode, const char *encoding) |
| 35742 | 3238 { |
|
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3239 PyObject *v, *u; |
|
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|
3240 char *buf; |
|
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|
3241 char *p; |
|
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|
3242 const char *end; |
|
43819
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|
3243 |
|
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3244 if (encoding == NULL) { |
|
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|
3245 buf = (char *)s; |
|
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|
3246 u = NULL; |
|
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|
3247 } else { |
|
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|
3248 /* check for integer overflow */ |
|
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3249 if (len > PY_SIZE_MAX / 6) |
|
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3250 return NULL; |
|
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|
3251 /* "ä" (2 bytes) may become "\U000000E4" (10 bytes), or 1:5 |
|
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|
3252 "\ä" (3 bytes) may become "\u005c\U000000E4" (16 bytes), or ~1:6 */ |
|
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3253 u = PyBytes_FromStringAndSize((char *)NULL, len * 6); |
|
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3254 if (u == NULL) |
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3255 return NULL; |
|
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3256 p = buf = PyBytes_AsString(u); |
|
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3257 end = s + len; |
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3258 while (s < end) { |
|
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3259 if (*s == '\\') { |
|
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|
3260 *p++ = *s++; |
|
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|
3261 if (*s & 0x80) { |
|
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|
3262 strcpy(p, "u005c"); |
|
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|
3263 p += 5; |
|
40450
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|
3264 } |
|
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|
3265 } |
|
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|
3266 if (*s & 0x80) { /* XXX inefficient */ |
|
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|
3267 PyObject *w; |
|
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|
3268 char *r; |
|
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|
3269 Py_ssize_t rn, i; |
|
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|
3270 w = decode_utf8(c, &s, end, "utf-32-be"); |
|
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3271 if (w == NULL) { |
|
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|
3272 Py_DECREF(u); |
|
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|
3273 return NULL; |
|
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|
3274 } |
|
47301
23ab586c427a
Renamed PyString to PyBytes
Christian Heimes <christian@cheimes.de>
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|
3275 r = PyBytes_AS_STRING(w); |
|
44351
86a2679dca46
#1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT.
Christian Heimes <christian@cheimes.de>
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|
3276 rn = Py_SIZE(w); |
|
56951
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|
3277 assert(rn % 4 == 0); |
|
db4dfdc74029
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|
3278 for (i = 0; i < rn; i += 4) { |
|
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|
3279 sprintf(p, "\\U%02x%02x%02x%02x", |
|
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|
3280 r[i + 0] & 0xFF, |
|
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|
3281 r[i + 1] & 0xFF, |
|
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|
3282 r[i + 2] & 0xFF, |
|
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|
3283 r[i + 3] & 0xFF); |
|
db4dfdc74029
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|
3284 p += 10; |
|
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3285 } |
|
56951
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|
3286 /* Should be impossible to overflow */ |
|
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|
3287 assert(p - buf <= Py_SIZE(u)); |
|
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3288 Py_DECREF(w); |
|
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3289 } else { |
|
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|
3290 *p++ = *s++; |
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|
3291 } |
|
40450
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Thomas Wouters <thomas@python.org>
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|
3292 } |
|
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|
3293 len = p - buf; |
|
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|
3294 s = buf; |
|
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|
3295 } |
|
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|
3296 if (rawmode) |
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|
3297 v = PyUnicode_DecodeRawUnicodeEscape(s, len, NULL); |
|
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3298 else |
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|
3299 v = PyUnicode_DecodeUnicodeEscape(s, len, NULL); |
|
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|
3300 Py_XDECREF(u); |
|
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|
3301 return v; |
| 35742 | 3302 } |
| 3303 | |
| 3304 /* s is a Python string literal, including the bracketing quote characters, | |
|
43777
0d462d789b18
Merging the py3k-pep3137 branch back into the py3k branch.
Guido van Rossum <guido@python.org>
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|
3305 * and r &/or b prefixes (if any), and embedded escape sequences (if any). |
| 35742 | 3306 * parsestr parses it, and returns the decoded Python string object. |
| 3307 */ | |
| 3308 static PyObject * | |
|
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|
3309 parsestr(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3310 { |
|
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|
3311 size_t len; |
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|
3312 const char *s = STR(n); |
|
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|
3313 int quote = Py_CHARMASK(*s); |
|
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|
3314 int rawmode = 0; |
|
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|
3315 int need_encoding; |
|
43777
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|
3316 if (isalpha(quote)) { |
|
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|
3317 if (quote == 'b' || quote == 'B') { |
|
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|
3318 quote = *++s; |
|
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|
3319 *bytesmode = 1; |
|
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3320 } |
|
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|
3321 if (quote == 'r' || quote == 'R') { |
|
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|
3322 quote = *++s; |
|
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|
3323 rawmode = 1; |
|
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|
3324 } |
|
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|
3325 } |
|
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|
3326 if (quote != '\'' && quote != '\"') { |
|
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|
3327 PyErr_BadInternalCall(); |
|
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|
3328 return NULL; |
|
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|
3329 } |
|
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|
3330 s++; |
|
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|
3331 len = strlen(s); |
|
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|
3332 if (len > INT_MAX) { |
|
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|
3333 PyErr_SetString(PyExc_OverflowError, |
|
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|
3334 "string to parse is too long"); |
|
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|
3335 return NULL; |
|
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|
3336 } |
|
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|
3337 if (s[--len] != quote) { |
|
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|
3338 PyErr_BadInternalCall(); |
|
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|
3339 return NULL; |
|
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|
3340 } |
|
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|
3341 if (len >= 4 && s[0] == quote && s[1] == quote) { |
|
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|
3342 s += 2; |
|
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|
3343 len -= 2; |
|
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|
3344 if (s[--len] != quote || s[--len] != quote) { |
|
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|
3345 PyErr_BadInternalCall(); |
|
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|
3346 return NULL; |
| 40894 | 3347 } |
|
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|
3348 } |
|
46306
b10292eafb07
Reverted r62128 on Guido's orders
Benjamin Peterson <benjamin@python.org>
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|
3349 if (!*bytesmode && !rawmode) { |
|
46664
031dfe455585
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|
3350 return decode_unicode(c, s, len, rawmode, c->c_encoding); |
|
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|
3351 } |
|
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|
3352 if (*bytesmode) { |
|
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|
3353 /* Disallow non-ascii characters (but not escapes) */ |
|
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|
3354 const char *c; |
|
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|
3355 for (c = s; *c; c++) { |
|
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|
3356 if (Py_CHARMASK(*c) >= 0x80) { |
|
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|
3357 ast_error(n, "bytes can only contain ASCII " |
|
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|
3358 "literal characters."); |
|
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|
3359 return NULL; |
|
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|
3360 } |
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|
3361 } |
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|
3362 } |
|
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|
3363 need_encoding = (!*bytesmode && c->c_encoding != NULL && |
|
49539
481ad3d9ffd1
Latin-1 source code was not being properly decoded when passed through
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|
3364 strcmp(c->c_encoding, "utf-8") != 0); |
|
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|
3365 if (rawmode || strchr(s, '\\') == NULL) { |
|
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|
3366 if (need_encoding) { |
|
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|
3367 PyObject *v, *u = PyUnicode_DecodeUTF8(s, len, NULL); |
|
43819
068655054b0d
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|
3368 if (u == NULL || !*bytesmode) |
|
068655054b0d
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|
3369 return u; |
|
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|
3370 v = PyUnicode_AsEncodedString(u, c->c_encoding, NULL); |
|
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|
3371 Py_DECREF(u); |
|
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|
3372 return v; |
|
43819
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Guido van Rossum <guido@python.org>
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3373 } else if (*bytesmode) { |
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3374 return PyBytes_FromStringAndSize(s, len); |
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3375 } else if (strcmp(c->c_encoding, "utf-8") == 0) { |
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3376 return PyUnicode_FromStringAndSize(s, len); |
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3377 } else { |
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3378 return PyUnicode_DecodeLatin1(s, len, NULL); |
|
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3379 } |
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3380 } |
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3381 return PyBytes_DecodeEscape(s, len, NULL, 1, |
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3382 need_encoding ? c->c_encoding : NULL); |
| 35742 | 3383 } |
| 3384 | |
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3385 /* Build a Python string object out of a STRING+ atom. This takes care of |
| 35742 | 3386 * compile-time literal catenation, calling parsestr() on each piece, and |
| 3387 * pasting the intermediate results together. | |
| 3388 */ | |
| 3389 static PyObject * | |
| 40894 | 3390 parsestrplus(struct compiling *c, const node *n, int *bytesmode) |
| 35742 | 3391 { |
|
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3392 PyObject *v; |
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3393 int i; |
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3394 REQ(CHILD(n, 0), STRING); |
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3395 v = parsestr(c, CHILD(n, 0), bytesmode); |
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3396 if (v != NULL) { |
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3397 /* String literal concatenation */ |
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3398 for (i = 1; i < NCH(n); i++) { |
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3399 PyObject *s; |
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3400 int subbm = 0; |
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3401 s = parsestr(c, CHILD(n, i), &subbm); |
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3402 if (s == NULL) |
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3403 goto onError; |
|
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3404 if (*bytesmode != subbm) { |
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3405 ast_error(n, "cannot mix bytes and nonbytes literals"); |
|
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3406 goto onError; |
|
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3407 } |
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3408 if (PyBytes_Check(v) && PyBytes_Check(s)) { |
|
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3409 PyBytes_ConcatAndDel(&v, s); |
|
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3410 if (v == NULL) |
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3411 goto onError; |
|
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3412 } |
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3413 else { |
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3414 PyObject *temp = PyUnicode_Concat(v, s); |
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3415 Py_DECREF(s); |
|
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3416 Py_DECREF(v); |
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3417 v = temp; |
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3418 if (v == NULL) |
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3419 goto onError; |
|
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3420 } |
|
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3421 } |
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3422 } |
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3423 return v; |
| 35742 | 3424 |
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3425 onError: |
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3426 Py_XDECREF(v); |
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3427 return NULL; |
| 35742 | 3428 } |