cpython-lru_cache-weakref: Python/symtable.c annotate

annotate Python/symtable.c @ 36226:bb6fa4a31f15 legacy-trunk

Fix icc warnings: shadowing local variable (i) and complex is set but not used, so remove

author	Neal Norwitz <nnorwitz@gmail.com>
date	Sat, 07 Jan 2006 21:24:54 +0000
parents	4aa01879a8f5
children	d3f4c467e439

rev	line source
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	1 #include "Python.h"
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	2 #include "Python-ast.h"
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	3 #include "code.h"
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	4 #include "symtable.h"
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	5 #include "structmember.h"
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	6
36089 4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations. Neal Norwitz <nnorwitz@gmail.com> parents: 35939 diff changeset	7 /* error strings used for warnings */
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	8 #define GLOBAL_AFTER_ASSIGN \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	9 "name '%.400s' is assigned to before global declaration"
21325 8a26bb369f53 Add a comment explaining the st_symbols cache. Jeremy Hylton <jeremy@alum.mit.edu> parents: 21314 diff changeset	10
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	11 #define GLOBAL_AFTER_USE \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	12 "name '%.400s' is used prior to global declaration"
21325 8a26bb369f53 Add a comment explaining the st_symbols cache. Jeremy Hylton <jeremy@alum.mit.edu> parents: 21314 diff changeset	13
36089 4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations. Neal Norwitz <nnorwitz@gmail.com> parents: 35939 diff changeset	14 #define IMPORT_STAR_WARNING "import * only allowed at module level"
4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations. Neal Norwitz <nnorwitz@gmail.com> parents: 35939 diff changeset	15
4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations. Neal Norwitz <nnorwitz@gmail.com> parents: 35939 diff changeset	16
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	17 PySTEntryObject *
35793 914ec0afa51c Do not pollute name block_ty, prefix with _Py_ Neal Norwitz <nnorwitz@gmail.com> parents: 35780 diff changeset	18 PySTEntry_New(struct symtable *st, identifier name, _Py_block_ty block,
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	19 void *key, int lineno)
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	20 {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	21 PySTEntryObject *ste = NULL;
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	22 PyObject *k;
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	23
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	24 k = PyLong_FromVoidPtr(key);
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	25 if (k == NULL)
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	26 goto fail;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	27 ste = (PySTEntryObject *)PyObject_New(PySTEntryObject,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	28 &PySTEntry_Type);
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	29 ste->ste_table = st;
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	30 ste->ste_id = k;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	31 ste->ste_tmpname = 0;
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	32
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	33 ste->ste_name = name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	34 Py_INCREF(name);
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	35
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	36 ste->ste_symbols = NULL;
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	37 ste->ste_varnames = NULL;
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	38 ste->ste_children = NULL;
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	39
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	40 ste->ste_symbols = PyDict_New();
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	41 if (ste->ste_symbols == NULL)
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	42 goto fail;
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	43
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	44 ste->ste_varnames = PyList_New(0);
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	45 if (ste->ste_varnames == NULL)
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	46 goto fail;
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	47
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	48 ste->ste_children = PyList_New(0);
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	49 if (ste->ste_children == NULL)
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	50 goto fail;
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	51
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	52 ste->ste_type = block;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	53 ste->ste_unoptimized = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	54 ste->ste_nested = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	55 ste->ste_free = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	56 ste->ste_varargs = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	57 ste->ste_varkeywords = 0;
21179 485422900ef0 SF bug #488687 reported by Neal Norwitz Jeremy Hylton <jeremy@alum.mit.edu> parents: 21090 diff changeset	58 ste->ste_opt_lineno = 0;
29226 3aaf24b949df Backport fix for SF bug 734869 and sundry compiler cleanups. Jeremy Hylton <jeremy@alum.mit.edu> parents: 21325 diff changeset	59 ste->ste_tmpname = 0;
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	60 ste->ste_lineno = lineno;
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	61
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	62 if (st->st_cur != NULL &&
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	63 (st->st_cur->ste_nested \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	64 st->st_cur->ste_type == FunctionBlock))
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	65 ste->ste_nested = 1;
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	66 ste->ste_child_free = 0;
18148 7bc473b2c654 Merging the gen-branch into the main line, at Guido's direction. Yay! Tim Peters <tim.peters@gmail.com> parents: 16799 diff changeset	67 ste->ste_generator = 0;
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	68
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	69 if (PyDict_SetItem(st->st_symbols, ste->ste_id, (PyObject *)ste) < 0)
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	70 goto fail;
16753 51977af230fa Fix for bug 133489: compiler leaks memory Jeremy Hylton <jeremy@alum.mit.edu> parents: 16539 diff changeset	71
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	72 return ste;
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	73 fail:
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	74 Py_XDECREF(ste);
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	75 return NULL;
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	76 }
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	77
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	78 static PyObject *
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	79 ste_repr(PySTEntryObject *ste)
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	80 {
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	81 char buf[256];
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	82
21090 5e25c669741c ste_repr(): Conversion of sprintf() to PyOS_snprintf() for buffer Barry Warsaw <barry@python.org> parents: 20012 diff changeset	83 PyOS_snprintf(buf, sizeof(buf),
5e25c669741c ste_repr(): Conversion of sprintf() to PyOS_snprintf() for buffer Barry Warsaw <barry@python.org> parents: 20012 diff changeset	84 "<symtable entry %.100s(%ld), line %d>",
5e25c669741c ste_repr(): Conversion of sprintf() to PyOS_snprintf() for buffer Barry Warsaw <barry@python.org> parents: 20012 diff changeset	85 PyString_AS_STRING(ste->ste_name),
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	86 PyInt_AS_LONG(ste->ste_id), ste->ste_lineno);
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	87 return PyString_FromString(buf);
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	88 }
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	89
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	90 static void
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	91 ste_dealloc(PySTEntryObject *ste)
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	92 {
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	93 ste->ste_table = NULL;
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	94 Py_XDECREF(ste->ste_id);
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	95 Py_XDECREF(ste->ste_name);
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	96 Py_XDECREF(ste->ste_symbols);
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	97 Py_XDECREF(ste->ste_varnames);
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	98 Py_XDECREF(ste->ste_children);
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	99 PyObject_Del(ste);
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	100 }
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	101
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	102 #define OFF(x) offsetof(PySTEntryObject, x)
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	103
20012 3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	104 static PyMemberDef ste_memberlist[] = {
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	105 {"id", T_OBJECT, OFF(ste_id), READONLY},
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	106 {"name", T_OBJECT, OFF(ste_name), READONLY},
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	107 {"symbols", T_OBJECT, OFF(ste_symbols), READONLY},
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	108 {"varnames", T_OBJECT, OFF(ste_varnames), READONLY},
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	109 {"children", T_OBJECT, OFF(ste_children), READONLY},
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	110 {"type", T_INT, OFF(ste_type), READONLY},
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	111 {"lineno", T_INT, OFF(ste_lineno), READONLY},
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	112 {NULL}
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	113 };
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	114
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	115 PyTypeObject PySTEntry_Type = {
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	116 PyObject_HEAD_INIT(&PyType_Type)
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	117 0,
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	118 "symtable entry",
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	119 sizeof(PySTEntryObject),
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	120 0,
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	121 (destructor)ste_dealloc, /* tp_dealloc */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	122 0, /* tp_print */
20012 3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	123 0, /* tp_getattr */
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	124 0, /* tp_setattr */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	125 0, /* tp_compare */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	126 (reprfunc)ste_repr, /* tp_repr */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	127 0, /* tp_as_number */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	128 0, /* tp_as_sequence */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	129 0, /* tp_as_mapping */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	130 0, /* tp_hash */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	131 0, /* tp_call */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	132 0, /* tp_str */
20012 3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	133 PyObject_GenericGetAttr, /* tp_getattro */
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	134 0, /* tp_setattro */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	135 0, /* tp_as_buffer */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	136 Py_TPFLAGS_DEFAULT, /* tp_flags */
a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	137 0, /* tp_doc */
20012 3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	138 0, /* tp_traverse */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	139 0, /* tp_clear */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	140 0, /* tp_richcompare */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	141 0, /* tp_weaklistoffset */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	142 0, /* tp_iter */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	143 0, /* tp_iternext */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	144 0, /* tp_methods */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	145 ste_memberlist, /* tp_members */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	146 0, /* tp_getset */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	147 0, /* tp_base */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	148 0, /* tp_dict */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	149 0, /* tp_descr_get */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	150 0, /* tp_descr_set */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	151 0, /* tp_dictoffset */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	152 0, /* tp_init */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	153 0, /* tp_alloc */
3faabf54b8b8 Add optional docstrings to member descriptors. For backwards Guido van Rossum <guido@python.org> parents: 18148 diff changeset	154 0, /* tp_new */
16539 a47d93ef103a Relax the rules for using 'from ... import ' and exec in the presence Jeremy Hylton <jeremy@alum.mit.edu>* parents: diff changeset	155 };
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	156
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	157 static int symtable_analyze(struct symtable *st);
36089 4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations. Neal Norwitz <nnorwitz@gmail.com> parents: 35939 diff changeset	158 static int symtable_warn(struct symtable st, char msg, int lineno);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	159 static int symtable_enter_block(struct symtable *st, identifier name,
35793 914ec0afa51c Do not pollute name block_ty, prefix with _Py_ Neal Norwitz <nnorwitz@gmail.com> parents: 35780 diff changeset	160 _Py_block_ty block, void *ast, int lineno);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	161 static int symtable_exit_block(struct symtable st, void ast);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	162 static int symtable_visit_stmt(struct symtable *st, stmt_ty s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	163 static int symtable_visit_expr(struct symtable *st, expr_ty s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	164 static int symtable_visit_genexp(struct symtable *st, expr_ty s);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	165 static int symtable_visit_arguments(struct symtable *st, arguments_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	166 static int symtable_visit_excepthandler(struct symtable *st, excepthandler_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	167 static int symtable_visit_alias(struct symtable *st, alias_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	168 static int symtable_visit_comprehension(struct symtable *st, comprehension_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	169 static int symtable_visit_keyword(struct symtable *st, keyword_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	170 static int symtable_visit_slice(struct symtable *st, slice_ty);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	171 static int symtable_visit_params(struct symtable st, asdl_seq args, int top);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	172 static int symtable_visit_params_nested(struct symtable st, asdl_seq args);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	173 static int symtable_implicit_arg(struct symtable *st, int pos);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	174
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	175
35880 0d1e2e73c3ec Bring handling of genexpr in line with other anonymous scope names Nick Coghlan <ncoghlan@gmail.com> parents: 35863 diff changeset	176 static identifier top = NULL, lambda = NULL, genexpr = NULL;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	177
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	178 #define GET_IDENTIFIER(VAR) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	179 ((VAR) ? (VAR) : ((VAR) = PyString_InternFromString(# VAR)))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	180
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	181 #define DUPLICATE_ARGUMENT \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	182 "duplicate argument '%s' in function definition"
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	183
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	184 static struct symtable *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	185 symtable_new(void)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	186 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	187 struct symtable *st;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	188
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	189 st = (struct symtable *)PyMem_Malloc(sizeof(struct symtable));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	190 if (st == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	191 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	192
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	193 st->st_filename = NULL;
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	194 st->st_symbols = NULL;
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	195
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	196 if ((st->st_stack = PyList_New(0)) == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	197 goto fail;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	198 if ((st->st_symbols = PyDict_New()) == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	199 goto fail;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	200 st->st_cur = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	201 st->st_tmpname = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	202 st->st_private = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	203 return st;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	204 fail:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	205 PySymtable_Free(st);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	206 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	207 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	208
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	209 struct symtable *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	210 PySymtable_Build(mod_ty mod, const char filename, PyFutureFeatures future)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	211 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	212 struct symtable *st = symtable_new();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	213 asdl_seq *seq;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	214 int i;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	215
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	216 if (st == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	217 return st;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	218 st->st_filename = filename;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	219 st->st_future = future;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	220 symtable_enter_block(st, GET_IDENTIFIER(top), ModuleBlock,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	221 (void *)mod, 0);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	222 st->st_top = st->st_cur;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	223 st->st_cur->ste_unoptimized = OPT_TOPLEVEL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	224 /* Any other top-level initialization? */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	225 switch (mod->kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	226 case Module_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	227 seq = mod->v.Module.body;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	228 for (i = 0; i < asdl_seq_LEN(seq); i++)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	229 if (!symtable_visit_stmt(st, asdl_seq_GET(seq, i)))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	230 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	231 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	232 case Expression_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	233 if (!symtable_visit_expr(st, mod->v.Expression.body))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	234 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	235 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	236 case Interactive_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	237 seq = mod->v.Interactive.body;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	238 for (i = 0; i < asdl_seq_LEN(seq); i++)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	239 if (!symtable_visit_stmt(st, asdl_seq_GET(seq, i)))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	240 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	241 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	242 case Suite_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	243 PyErr_SetString(PyExc_RuntimeError,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	244 "this compiler does not handle Suites");
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	245 goto error;
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	246 }
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	247 if (!symtable_exit_block(st, (void *)mod)) {
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	248 PySymtable_Free(st);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	249 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	250 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	251 if (symtable_analyze(st))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	252 return st;
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	253 PySymtable_Free(st);
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	254 return NULL;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	255 error:
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	256 (void) symtable_exit_block(st, (void *)mod);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	257 PySymtable_Free(st);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	258 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	259 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	260
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	261 void
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	262 PySymtable_Free(struct symtable *st)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	263 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	264 Py_XDECREF(st->st_symbols);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	265 Py_XDECREF(st->st_stack);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	266 PyMem_Free((void *)st);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	267 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	268
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	269 PySTEntryObject *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	270 PySymtable_Lookup(struct symtable st, void key)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	271 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	272 PyObject k, v;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	273
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	274 k = PyLong_FromVoidPtr(key);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	275 if (k == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	276 return NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	277 v = PyDict_GetItem(st->st_symbols, k);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	278 if (v) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	279 assert(PySTEntry_Check(v));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	280 Py_INCREF(v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	281 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	282 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	283 PyErr_SetString(PyExc_KeyError,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	284 "unknown symbol table entry");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	285 }
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	286
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	287 Py_DECREF(k);
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	288 return (PySTEntryObject *)v;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	289 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	290
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	291 int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	292 PyST_GetScope(PySTEntryObject ste, PyObject name)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	293 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	294 PyObject *v = PyDict_GetItem(ste->ste_symbols, name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	295 if (!v)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	296 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	297 assert(PyInt_Check(v));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	298 return (PyInt_AS_LONG(v) >> SCOPE_OFF) & SCOPE_MASK;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	299 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	300
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	301
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	302 /* Analyze raw symbol information to determine scope of each name.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	303
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	304 The next several functions are helpers for PySymtable_Analyze(),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	305 which determines whether a name is local, global, or free. In addition,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	306 it determines which local variables are cell variables; they provide
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	307 bindings that are used for free variables in enclosed blocks.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	308
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	309 There are also two kinds of free variables, implicit and explicit. An
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	310 explicit global is declared with the global statement. An implicit
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	311 global is a free variable for which the compiler has found no binding
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	312 in an enclosing function scope. The implicit global is either a global
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	313 or a builtin. Python's module and class blocks use the xxx_NAME opcodes
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	314 to handle these names to implement slightly odd semantics. In such a
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	315 block, the name is treated as global until it is assigned to; then it
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	316 is treated as a local.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	317
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	318 The symbol table requires two passes to determine the scope of each name.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	319 The first pass collects raw facts from the AST: the name is a parameter
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	320 here, the name is used by not defined here, etc. The second pass analyzes
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	321 these facts during a pass over the PySTEntryObjects created during pass 1.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	322
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	323 When a function is entered during the second pass, the parent passes
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	324 the set of all name bindings visible to its children. These bindings
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	325 are used to determine if the variable is free or an implicit global.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	326 After doing the local analysis, it analyzes each of its child blocks
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	327 using an updated set of name bindings.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	328
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	329 The children update the free variable set. If a local variable is free
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	330 in a child, the variable is marked as a cell. The current function must
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	331 provide runtime storage for the variable that may outlive the function's
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	332 frame. Cell variables are removed from the free set before the analyze
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	333 function returns to its parent.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	334
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	335 The sets of bound and free variables are implemented as dictionaries
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	336 mapping strings to None.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	337 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	338
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	339 #define SET_SCOPE(DICT, NAME, I) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	340 PyObject *o = PyInt_FromLong(I); \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	341 if (!o) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	342 return 0; \
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	343 if (PyDict_SetItem((DICT), (NAME), o) < 0) { \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	344 Py_DECREF(o); \
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	345 return 0; \
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	346 } \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	347 Py_DECREF(o); \
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	348 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	349
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	350 /* Decide on scope of name, given flags.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	351
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	352 The dicts passed in as arguments are modified as necessary.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	353 ste is passed so that flags can be updated.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	354 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	355
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	356 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	357 analyze_name(PySTEntryObject ste, PyObject dict, PyObject *name, int flags,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	358 PyObject bound, PyObject local, PyObject *free,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	359 PyObject *global)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	360 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	361 if (flags & DEF_GLOBAL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	362 if (flags & DEF_PARAM) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	363 PyErr_Format(PyExc_SyntaxError,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	364 "name '%s' is local and global",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	365 PyString_AS_STRING(name));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	366 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	367 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	368 SET_SCOPE(dict, name, GLOBAL_EXPLICIT);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	369 if (PyDict_SetItem(global, name, Py_None) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	370 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	371 if (bound && PyDict_GetItem(bound, name)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	372 if (PyDict_DelItem(bound, name) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	373 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	374 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	375 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	376 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	377 if (flags & DEF_BOUND) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	378 SET_SCOPE(dict, name, LOCAL);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	379 if (PyDict_SetItem(local, name, Py_None) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	380 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	381 if (PyDict_GetItem(global, name)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	382 if (PyDict_DelItem(global, name) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	383 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	384 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	385 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	386 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	387 /* If an enclosing block has a binding for this name, it
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	388 is a free variable rather than a global variable.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	389 Note that having a non-NULL bound implies that the block
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	390 is nested.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	391 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	392 if (bound && PyDict_GetItem(bound, name)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	393 SET_SCOPE(dict, name, FREE);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	394 ste->ste_free = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	395 if (PyDict_SetItem(free, name, Py_None) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	396 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	397 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	398 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	399 /* If a parent has a global statement, then call it global
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	400 explicit? It could also be global implicit.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	401 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	402 else if (global && PyDict_GetItem(global, name)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	403 SET_SCOPE(dict, name, GLOBAL_EXPLICIT);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	404 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	405 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	406 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	407 if (ste->ste_nested)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	408 ste->ste_free = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	409 SET_SCOPE(dict, name, GLOBAL_IMPLICIT);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	410 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	411 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	412 return 0; /* Can't get here */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	413 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	414
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	415 #undef SET_SCOPE
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	416
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	417 /* If a name is defined in free and also in locals, then this block
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	418 provides the binding for the free variable. The name should be
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	419 marked CELL in this block and removed from the free list.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	420
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	421 Note that the current block's free variables are included in free.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	422 That's safe because no name can be free and local in the same scope.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	423 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	424
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	425 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	426 analyze_cells(PyObject scope, PyObject free)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	427 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	428 PyObject name, v, *w;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	429 int flags, pos = 0, success = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	430
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	431 w = PyInt_FromLong(CELL);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	432 if (!w)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	433 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	434 while (PyDict_Next(scope, &pos, &name, &v)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	435 assert(PyInt_Check(v));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	436 flags = PyInt_AS_LONG(v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	437 if (flags != LOCAL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	438 continue;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	439 if (!PyDict_GetItem(free, name))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	440 continue;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	441 /* Replace LOCAL with CELL for this name, and remove
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	442 from free. It is safe to replace the value of name
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	443 in the dict, because it will not cause a resize.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	444 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	445 if (PyDict_SetItem(scope, name, w) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	446 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	447 if (!PyDict_DelItem(free, name) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	448 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	449 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	450 success = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	451 error:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	452 Py_DECREF(w);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	453 return success;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	454 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	455
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	456 /* Check for illegal statements in unoptimized namespaces */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	457 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	458 check_unoptimized(const PySTEntryObject* ste) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	459 char buf[300];
35759 d91ed7107fd2 ANSI-C-ify the placement of local var declarations. Armin Rigo <arigo@tunes.org> parents: 35742 diff changeset	460 const char* trailer;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	461
35780 72cb041ccde3 Fix check_unoptimized() function. The only optimized namespaces are Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35779 diff changeset	462 if (ste->ste_type != FunctionBlock \|\| !ste->ste_unoptimized
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	463 \|\| !(ste->ste_free \|\| ste->ste_child_free))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	464 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	465
35759 d91ed7107fd2 ANSI-C-ify the placement of local var declarations. Armin Rigo <arigo@tunes.org> parents: 35742 diff changeset	466 trailer = (ste->ste_child_free ?
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	467 "contains a nested function with free variables" :
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	468 "is a nested function");
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	469
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	470 switch (ste->ste_unoptimized) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	471 case OPT_TOPLEVEL: /* exec / import * at top-level is fine */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	472 case OPT_EXEC: /* qualified exec is fine */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	473 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	474 case OPT_IMPORT_STAR:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	475 PyOS_snprintf(buf, sizeof(buf),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	476 "import * is not allowed in function '%.100s' "
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	477 "because it is %s",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	478 PyString_AS_STRING(ste->ste_name), trailer);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	479 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	480 case OPT_BARE_EXEC:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	481 PyOS_snprintf(buf, sizeof(buf),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	482 "unqualified exec is not allowed in function "
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	483 "'%.100s' it %s",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	484 PyString_AS_STRING(ste->ste_name), trailer);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	485 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	486 default:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	487 PyOS_snprintf(buf, sizeof(buf),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	488 "function '%.100s' uses import * and bare exec, "
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	489 "which are illegal because it %s",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	490 PyString_AS_STRING(ste->ste_name), trailer);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	491 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	492 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	493
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	494 PyErr_SetString(PyExc_SyntaxError, buf);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	495 PyErr_SyntaxLocation(ste->ste_table->st_filename,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	496 ste->ste_opt_lineno);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	497 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	498 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	499
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	500 /* Enter the final scope information into the st_symbols dict.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	501 *
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	502 * All arguments are dicts. Modifies symbols, others are read-only.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	503 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	504 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	505 update_symbols(PyObject symbols, PyObject scope,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	506 PyObject bound, PyObject free, int class)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	507 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	508 PyObject name, v, u, w, *free_value = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	509 int i, flags, pos = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	510
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	511 while (PyDict_Next(symbols, &pos, &name, &v)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	512 assert(PyInt_Check(v));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	513 flags = PyInt_AS_LONG(v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	514 w = PyDict_GetItem(scope, name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	515 assert(w && PyInt_Check(w));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	516 i = PyInt_AS_LONG(w);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	517 flags \|= (i << SCOPE_OFF);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	518 u = PyInt_FromLong(flags);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	519 if (PyDict_SetItem(symbols, name, u) < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	520 Py_DECREF(u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	521 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	522 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	523 Py_DECREF(u);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	524 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	525
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	526 free_value = PyInt_FromLong(FREE << SCOPE_OFF);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	527 if (!free_value)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	528 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	529
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	530 /* add a free variable when it's only use is for creating a closure */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	531 pos = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	532 while (PyDict_Next(free, &pos, &name, &v)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	533 PyObject *o = PyDict_GetItem(symbols, name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	534
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	535 if (o) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	536 /* It could be a free variable in a method of
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	537 the class that has the same name as a local
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	538 or global in the class scope.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	539 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	540 if (class &&
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	541 PyInt_AS_LONG(o) & (DEF_BOUND \| DEF_GLOBAL)) {
36226 bb6fa4a31f15 Fix icc warnings: shadowing local variable (i) and complex is set but not used, so remove Neal Norwitz <nnorwitz@gmail.com> parents: 36089 diff changeset	542 i = PyInt_AS_LONG(o) \| DEF_FREE_CLASS;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	543 o = PyInt_FromLong(i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	544 if (!o) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	545 Py_DECREF(free_value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	546 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	547 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	548 if (PyDict_SetItem(symbols, name, o) < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	549 Py_DECREF(o);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	550 Py_DECREF(free_value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	551 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	552 }
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	553 Py_DECREF(o);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	554 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	555 /* else it's not free, probably a cell */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	556 continue;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	557 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	558 if (!PyDict_GetItem(bound, name))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	559 continue; /* it's a global */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	560
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	561 if (PyDict_SetItem(symbols, name, free_value) < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	562 Py_DECREF(free_value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	563 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	564 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	565 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	566 Py_DECREF(free_value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	567 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	568 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	569
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	570 /* Make final symbol table decisions for block of ste.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	571 Arguments:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	572 ste -- current symtable entry (input/output)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	573 bound -- set of variables bound in enclosing scopes (input)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	574 free -- set of free variables in enclosed scopes (output)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	575 globals -- set of declared global variables in enclosing scopes (input)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	576 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	577
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	578 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	579 analyze_block(PySTEntryObject ste, PyObject bound, PyObject *free,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	580 PyObject *global)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	581 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	582 PyObject name, v, local = NULL, scope = NULL, *newbound = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	583 PyObject newglobal = NULL, newfree = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	584 int i, flags, pos = 0, success = 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	585
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	586 local = PyDict_New();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	587 if (!local)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	588 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	589 scope = PyDict_New();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	590 if (!scope)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	591 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	592 newglobal = PyDict_New();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	593 if (!newglobal)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	594 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	595 newfree = PyDict_New();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	596 if (!newfree)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	597 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	598 newbound = PyDict_New();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	599 if (!newbound)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	600 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	601
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	602 if (ste->ste_type == ClassBlock) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	603 /* make a copy of globals before calling analyze_name(),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	604 because global statements in the class have no effect
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	605 on nested functions.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	606 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	607 if (PyDict_Update(newglobal, global) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	608 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	609 if (bound)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	610 if (PyDict_Update(newbound, bound) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	611 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	612 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	613
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	614 assert(PySTEntry_Check(ste));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	615 assert(PyDict_Check(ste->ste_symbols));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	616 while (PyDict_Next(ste->ste_symbols, &pos, &name, &v)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	617 flags = PyInt_AS_LONG(v);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	618 if (!analyze_name(ste, scope, name, flags, bound, local, free,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	619 global))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	620 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	621 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	622
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	623 if (ste->ste_type != ClassBlock) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	624 if (ste->ste_type == FunctionBlock) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	625 if (PyDict_Update(newbound, local) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	626 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	627 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	628 if (bound) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	629 if (PyDict_Update(newbound, bound) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	630 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	631 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	632 if (PyDict_Update(newglobal, global) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	633 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	634 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	635
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	636 /* Recursively call analyze_block() on each child block */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	637 for (i = 0; i < PyList_GET_SIZE(ste->ste_children); ++i) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	638 PyObject *c = PyList_GET_ITEM(ste->ste_children, i);
35759 d91ed7107fd2 ANSI-C-ify the placement of local var declarations. Armin Rigo <arigo@tunes.org> parents: 35742 diff changeset	639 PySTEntryObject* entry;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	640 assert(c && PySTEntry_Check(c));
35759 d91ed7107fd2 ANSI-C-ify the placement of local var declarations. Armin Rigo <arigo@tunes.org> parents: 35742 diff changeset	641 entry = (PySTEntryObject*)c;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	642 if (!analyze_block(entry, newbound, newfree, newglobal))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	643 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	644 if (entry->ste_free \|\| entry->ste_child_free)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	645 ste->ste_child_free = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	646 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	647
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	648 if (ste->ste_type == FunctionBlock && !analyze_cells(scope, newfree))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	649 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	650 if (!update_symbols(ste->ste_symbols, scope, bound, newfree,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	651 ste->ste_type == ClassBlock))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	652 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	653 if (!check_unoptimized(ste))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	654 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	655
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	656 if (PyDict_Update(free, newfree) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	657 goto error;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	658 success = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	659 error:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	660 Py_XDECREF(local);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	661 Py_XDECREF(scope);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	662 Py_XDECREF(newbound);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	663 Py_XDECREF(newglobal);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	664 Py_XDECREF(newfree);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	665 if (!success)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	666 assert(PyErr_Occurred());
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	667 return success;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	668 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	669
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	670 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	671 symtable_analyze(struct symtable *st)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	672 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	673 PyObject free, global;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	674 int r;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	675
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	676 free = PyDict_New();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	677 if (!free)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	678 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	679 global = PyDict_New();
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	680 if (!global) {
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	681 Py_DECREF(free);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	682 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	683 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	684 r = analyze_block(st->st_top, NULL, free, global);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	685 Py_DECREF(free);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	686 Py_DECREF(global);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	687 return r;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	688 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	689
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	690
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	691 static int
36089 4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations. Neal Norwitz <nnorwitz@gmail.com> parents: 35939 diff changeset	692 symtable_warn(struct symtable st, char msg, int lineno)
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	693 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	694 if (PyErr_WarnExplicit(PyExc_SyntaxWarning, msg, st->st_filename,
36089 4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations. Neal Norwitz <nnorwitz@gmail.com> parents: 35939 diff changeset	695 lineno, NULL, NULL) < 0) {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	696 if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	697 PyErr_SetString(PyExc_SyntaxError, msg);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	698 PyErr_SyntaxLocation(st->st_filename,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	699 st->st_cur->ste_lineno);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	700 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	701 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	702 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	703 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	704 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	705
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	706 /* symtable_enter_block() gets a reference via PySTEntry_New().
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	707 This reference is released when the block is exited, via the DECREF
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	708 in symtable_exit_block().
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	709 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	710
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	711 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	712 symtable_exit_block(struct symtable st, void ast)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	713 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	714 int end;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	715
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	716 Py_DECREF(st->st_cur);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	717 end = PyList_GET_SIZE(st->st_stack) - 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	718 if (end >= 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	719 st->st_cur = (PySTEntryObject *)PyList_GET_ITEM(st->st_stack,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	720 end);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	721 Py_INCREF(st->st_cur);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	722 if (PySequence_DelItem(st->st_stack, end) < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	723 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	724 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	725 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	726 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	727
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	728 static int
35793 914ec0afa51c Do not pollute name block_ty, prefix with _Py_ Neal Norwitz <nnorwitz@gmail.com> parents: 35780 diff changeset	729 symtable_enter_block(struct symtable *st, identifier name, _Py_block_ty block,
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	730 void *ast, int lineno)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	731 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	732 PySTEntryObject *prev = NULL;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	733
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	734 if (st->st_cur) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	735 prev = st->st_cur;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	736 if (PyList_Append(st->st_stack, (PyObject *)st->st_cur) < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	737 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	738 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	739 Py_DECREF(st->st_cur);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	740 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	741 st->st_cur = PySTEntry_New(st, name, block, ast, lineno);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	742 if (name == GET_IDENTIFIER(top))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	743 st->st_global = st->st_cur->ste_symbols;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	744 if (prev) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	745 if (PyList_Append(prev->ste_children,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	746 (PyObject *)st->st_cur) < 0) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	747 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	748 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	749 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	750 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	751 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	752
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	753 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	754 symtable_lookup(struct symtable st, PyObject name)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	755 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	756 PyObject *o;
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	757 PyObject *mangled = _Py_Mangle(st->st_private, name);
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	758 if (!mangled)
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	759 return 0;
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	760 o = PyDict_GetItem(st->st_cur->ste_symbols, mangled);
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	761 Py_DECREF(mangled);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	762 if (!o)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	763 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	764 return PyInt_AsLong(o);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	765 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	766
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	767 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	768 symtable_add_def(struct symtable st, PyObject name, int flag)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	769 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	770 PyObject *o;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	771 PyObject *dict;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	772 int val;
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	773 PyObject *mangled = _Py_Mangle(st->st_private, name);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	774
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	775 if (!mangled)
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	776 return 0;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	777 dict = st->st_cur->ste_symbols;
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	778 if ((o = PyDict_GetItem(dict, mangled))) {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	779 val = PyInt_AS_LONG(o);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	780 if ((flag & DEF_PARAM) && (val & DEF_PARAM)) {
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	781 /* Is it better to use 'mangled' or 'name' here? */
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	782 PyErr_Format(PyExc_SyntaxError, DUPLICATE_ARGUMENT,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	783 PyString_AsString(name));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	784 PyErr_SyntaxLocation(st->st_filename,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	785 st->st_cur->ste_lineno);
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	786 goto error;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	787 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	788 val \|= flag;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	789 } else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	790 val = flag;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	791 o = PyInt_FromLong(val);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	792 if (o == NULL)
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	793 goto error;
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	794 if (PyDict_SetItem(dict, mangled, o) < 0) {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	795 Py_DECREF(o);
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	796 goto error;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	797 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	798 Py_DECREF(o);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	799
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	800 if (flag & DEF_PARAM) {
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	801 if (PyList_Append(st->st_cur->ste_varnames, mangled) < 0)
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	802 goto error;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	803 } else if (flag & DEF_GLOBAL) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	804 /* XXX need to update DEF_GLOBAL for other flags too;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	805 perhaps only DEF_FREE_GLOBAL */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	806 val = flag;
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	807 if ((o = PyDict_GetItem(st->st_global, mangled))) {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	808 val \|= PyInt_AS_LONG(o);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	809 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	810 o = PyInt_FromLong(val);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	811 if (o == NULL)
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	812 goto error;
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	813 if (PyDict_SetItem(st->st_global, mangled, o) < 0) {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	814 Py_DECREF(o);
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	815 goto error;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	816 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	817 Py_DECREF(o);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	818 }
35893 825655bfdf20 Last batch of ref leaks in new AST code. Neal Norwitz <nnorwitz@gmail.com> parents: 35880 diff changeset	819 Py_DECREF(mangled);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	820 return 1;
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	821
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	822 error:
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	823 Py_DECREF(mangled);
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	824 return 0;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	825 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	826
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	827 /* VISIT, VISIT_SEQ and VIST_SEQ_TAIL take an ASDL type as their second argument.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	828 They use the ASDL name to synthesize the name of the C type and the visit
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	829 function.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	830
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	831 VISIT_SEQ_TAIL permits the start of an ASDL sequence to be skipped, which is
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	832 useful if the first node in the sequence requires special treatment.
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	833 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	834
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	835 #define VISIT(ST, TYPE, V) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	836 if (!symtable_visit_ ## TYPE((ST), (V))) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	837 return 0;
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	838
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	839 #define VISIT_IN_BLOCK(ST, TYPE, V, S) \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	840 if (!symtable_visit_ ## TYPE((ST), (V))) { \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	841 symtable_exit_block((ST), (S)); \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	842 return 0; \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	843 }
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	844
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	845 #define VISIT_SEQ(ST, TYPE, SEQ) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	846 int i; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	847 asdl_seq seq = (SEQ); / avoid variable capture */ \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	848 for (i = 0; i < asdl_seq_LEN(seq); i++) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	849 TYPE ## _ty elt = asdl_seq_GET(seq, i); \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	850 if (!symtable_visit_ ## TYPE((ST), elt)) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	851 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	852 } \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	853 }
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	854
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	855 #define VISIT_SEQ_IN_BLOCK(ST, TYPE, SEQ, S) { \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	856 int i; \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	857 asdl_seq seq = (SEQ); / avoid variable capture */ \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	858 for (i = 0; i < asdl_seq_LEN(seq); i++) { \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	859 TYPE ## _ty elt = asdl_seq_GET(seq, i); \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	860 if (!symtable_visit_ ## TYPE((ST), elt)) { \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	861 symtable_exit_block((ST), (S)); \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	862 return 0; \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	863 } \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	864 } \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	865 }
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	866
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	867 #define VISIT_SEQ_TAIL(ST, TYPE, SEQ, START) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	868 int i; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	869 asdl_seq seq = (SEQ); / avoid variable capture */ \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	870 for (i = (START); i < asdl_seq_LEN(seq); i++) { \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	871 TYPE ## _ty elt = asdl_seq_GET(seq, i); \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	872 if (!symtable_visit_ ## TYPE((ST), elt)) \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	873 return 0; \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	874 } \
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	875 }
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	876
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	877 #define VISIT_SEQ_TAIL_IN_BLOCK(ST, TYPE, SEQ, START, S) { \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	878 int i; \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	879 asdl_seq seq = (SEQ); / avoid variable capture */ \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	880 for (i = (START); i < asdl_seq_LEN(seq); i++) { \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	881 TYPE ## _ty elt = asdl_seq_GET(seq, i); \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	882 if (!symtable_visit_ ## TYPE((ST), elt)) { \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	883 symtable_exit_block((ST), (S)); \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	884 return 0; \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	885 } \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	886 } \
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	887 }
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	888
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	889 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	890 symtable_visit_stmt(struct symtable *st, stmt_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	891 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	892 switch (s->kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	893 case FunctionDef_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	894 if (!symtable_add_def(st, s->v.FunctionDef.name, DEF_LOCAL))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	895 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	896 if (s->v.FunctionDef.args->defaults)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	897 VISIT_SEQ(st, expr, s->v.FunctionDef.args->defaults);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	898 if (s->v.FunctionDef.decorators)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	899 VISIT_SEQ(st, expr, s->v.FunctionDef.decorators);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	900 if (!symtable_enter_block(st, s->v.FunctionDef.name,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	901 FunctionBlock, (void *)s, s->lineno))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	902 return 0;
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	903 VISIT_IN_BLOCK(st, arguments, s->v.FunctionDef.args, s);
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	904 VISIT_SEQ_IN_BLOCK(st, stmt, s->v.FunctionDef.body, s);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	905 if (!symtable_exit_block(st, s))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	906 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	907 break;
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	908 case ClassDef_kind: {
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	909 PyObject *tmp;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	910 if (!symtable_add_def(st, s->v.ClassDef.name, DEF_LOCAL))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	911 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	912 VISIT_SEQ(st, expr, s->v.ClassDef.bases);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	913 if (!symtable_enter_block(st, s->v.ClassDef.name, ClassBlock,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	914 (void *)s, s->lineno))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	915 return 0;
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	916 tmp = st->st_private;
19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	917 st->st_private = s->v.ClassDef.name;
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	918 VISIT_SEQ_IN_BLOCK(st, stmt, s->v.ClassDef.body, s);
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	919 st->st_private = tmp;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	920 if (!symtable_exit_block(st, s))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	921 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	922 break;
35779 19d796bd740f Fix private name mangling. The symtable also must do mangles so that Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 35766 diff changeset	923 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	924 case Return_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	925 if (s->v.Return.value)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	926 VISIT(st, expr, s->v.Return.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	927 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	928 case Delete_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	929 VISIT_SEQ(st, expr, s->v.Delete.targets);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	930 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	931 case Assign_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	932 VISIT_SEQ(st, expr, s->v.Assign.targets);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	933 VISIT(st, expr, s->v.Assign.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	934 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	935 case AugAssign_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	936 VISIT(st, expr, s->v.AugAssign.target);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	937 VISIT(st, expr, s->v.AugAssign.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	938 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	939 case Print_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	940 if (s->v.Print.dest)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	941 VISIT(st, expr, s->v.Print.dest);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	942 VISIT_SEQ(st, expr, s->v.Print.values);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	943 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	944 case For_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	945 VISIT(st, expr, s->v.For.target);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	946 VISIT(st, expr, s->v.For.iter);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	947 VISIT_SEQ(st, stmt, s->v.For.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	948 if (s->v.For.orelse)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	949 VISIT_SEQ(st, stmt, s->v.For.orelse);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	950 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	951 case While_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	952 VISIT(st, expr, s->v.While.test);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	953 VISIT_SEQ(st, stmt, s->v.While.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	954 if (s->v.While.orelse)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	955 VISIT_SEQ(st, stmt, s->v.While.orelse);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	956 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	957 case If_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	958 /* XXX if 0: and lookup_yield() hacks */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	959 VISIT(st, expr, s->v.If.test);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	960 VISIT_SEQ(st, stmt, s->v.If.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	961 if (s->v.If.orelse)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	962 VISIT_SEQ(st, stmt, s->v.If.orelse);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	963 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	964 case Raise_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	965 if (s->v.Raise.type) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	966 VISIT(st, expr, s->v.Raise.type);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	967 if (s->v.Raise.inst) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	968 VISIT(st, expr, s->v.Raise.inst);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	969 if (s->v.Raise.tback)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	970 VISIT(st, expr, s->v.Raise.tback);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	971 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	972 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	973 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	974 case TryExcept_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	975 VISIT_SEQ(st, stmt, s->v.TryExcept.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	976 VISIT_SEQ(st, stmt, s->v.TryExcept.orelse);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	977 VISIT_SEQ(st, excepthandler, s->v.TryExcept.handlers);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	978 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	979 case TryFinally_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	980 VISIT_SEQ(st, stmt, s->v.TryFinally.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	981 VISIT_SEQ(st, stmt, s->v.TryFinally.finalbody);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	982 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	983 case Assert_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	984 VISIT(st, expr, s->v.Assert.test);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	985 if (s->v.Assert.msg)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	986 VISIT(st, expr, s->v.Assert.msg);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	987 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	988 case Import_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	989 VISIT_SEQ(st, alias, s->v.Import.names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	990 /* XXX Don't have the lineno available inside
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	991 visit_alias */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	992 if (st->st_cur->ste_unoptimized && !st->st_cur->ste_opt_lineno)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	993 st->st_cur->ste_opt_lineno = s->lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	994 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	995 case ImportFrom_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	996 VISIT_SEQ(st, alias, s->v.ImportFrom.names);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	997 /* XXX Don't have the lineno available inside
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	998 visit_alias */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	999 if (st->st_cur->ste_unoptimized && !st->st_cur->ste_opt_lineno)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1000 st->st_cur->ste_opt_lineno = s->lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1001 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1002 case Exec_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1003 VISIT(st, expr, s->v.Exec.body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1004 if (!st->st_cur->ste_opt_lineno)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1005 st->st_cur->ste_opt_lineno = s->lineno;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1006 if (s->v.Exec.globals) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1007 st->st_cur->ste_unoptimized \|= OPT_EXEC;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1008 VISIT(st, expr, s->v.Exec.globals);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1009 if (s->v.Exec.locals)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1010 VISIT(st, expr, s->v.Exec.locals);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1011 } else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1012 st->st_cur->ste_unoptimized \|= OPT_BARE_EXEC;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1013 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1014 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1015 case Global_kind: {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1016 int i;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1017 asdl_seq *seq = s->v.Global.names;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1018 for (i = 0; i < asdl_seq_LEN(seq); i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1019 identifier name = asdl_seq_GET(seq, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1020 char *c_name = PyString_AS_STRING(name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1021 int cur = symtable_lookup(st, name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1022 if (cur < 0)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1023 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1024 if (cur & (DEF_LOCAL \| USE)) {
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	1025 char buf[256];
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1026 if (cur & DEF_LOCAL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1027 PyOS_snprintf(buf, sizeof(buf),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1028 GLOBAL_AFTER_ASSIGN,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1029 c_name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1030 else
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1031 PyOS_snprintf(buf, sizeof(buf),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1032 GLOBAL_AFTER_USE,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1033 c_name);
36089 4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations. Neal Norwitz <nnorwitz@gmail.com> parents: 35939 diff changeset	1034 if (!symtable_warn(st, buf, s->lineno))
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1035 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1036 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1037 if (!symtable_add_def(st, name, DEF_GLOBAL))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1038 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1039 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1040 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1041 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1042 case Expr_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1043 VISIT(st, expr, s->v.Expr.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1044 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1045 case Pass_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1046 case Break_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1047 case Continue_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1048 /* nothing to do here */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1049 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1050 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1051 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1052 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1053
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1054 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1055 symtable_visit_expr(struct symtable *st, expr_ty e)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1056 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1057 switch (e->kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1058 case BoolOp_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1059 VISIT_SEQ(st, expr, e->v.BoolOp.values);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1060 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1061 case BinOp_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1062 VISIT(st, expr, e->v.BinOp.left);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1063 VISIT(st, expr, e->v.BinOp.right);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1064 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1065 case UnaryOp_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1066 VISIT(st, expr, e->v.UnaryOp.operand);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1067 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1068 case Lambda_kind: {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1069 if (!symtable_add_def(st, GET_IDENTIFIER(lambda), DEF_LOCAL))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1070 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1071 if (e->v.Lambda.args->defaults)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1072 VISIT_SEQ(st, expr, e->v.Lambda.args->defaults);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1073 /* XXX how to get line numbers for expressions */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1074 if (!symtable_enter_block(st, GET_IDENTIFIER(lambda),
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1075 FunctionBlock, (void *)e, 0))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1076 return 0;
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	1077 VISIT_IN_BLOCK(st, arguments, e->v.Lambda.args, (void*)e);
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	1078 VISIT_IN_BLOCK(st, expr, e->v.Lambda.body, (void*)e);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1079 if (!symtable_exit_block(st, (void *)e))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1080 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1081 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1082 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1083 case Dict_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1084 VISIT_SEQ(st, expr, e->v.Dict.keys);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1085 VISIT_SEQ(st, expr, e->v.Dict.values);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1086 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1087 case ListComp_kind: {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1088 char tmpname[256];
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1089 identifier tmp;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1090
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1091 PyOS_snprintf(tmpname, sizeof(tmpname), "_[%d]",
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1092 ++st->st_cur->ste_tmpname);
35893 825655bfdf20 Last batch of ref leaks in new AST code. Neal Norwitz <nnorwitz@gmail.com> parents: 35880 diff changeset	1093 tmp = PyString_InternFromString(tmpname);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1094 if (!symtable_add_def(st, tmp, DEF_LOCAL))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1095 return 0;
35893 825655bfdf20 Last batch of ref leaks in new AST code. Neal Norwitz <nnorwitz@gmail.com> parents: 35880 diff changeset	1096 Py_DECREF(tmp);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1097 VISIT(st, expr, e->v.ListComp.elt);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1098 VISIT_SEQ(st, comprehension, e->v.ListComp.generators);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1099 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1100 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1101 case GeneratorExp_kind: {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1102 if (!symtable_visit_genexp(st, e)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1103 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1104 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1105 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1106 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1107 case Yield_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1108 if (e->v.Yield.value)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1109 VISIT(st, expr, e->v.Yield.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1110 st->st_cur->ste_generator = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1111 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1112 case Compare_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1113 VISIT(st, expr, e->v.Compare.left);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1114 VISIT_SEQ(st, expr, e->v.Compare.comparators);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1115 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1116 case Call_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1117 VISIT(st, expr, e->v.Call.func);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1118 VISIT_SEQ(st, expr, e->v.Call.args);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1119 VISIT_SEQ(st, keyword, e->v.Call.keywords);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1120 if (e->v.Call.starargs)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1121 VISIT(st, expr, e->v.Call.starargs);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1122 if (e->v.Call.kwargs)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1123 VISIT(st, expr, e->v.Call.kwargs);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1124 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1125 case Repr_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1126 VISIT(st, expr, e->v.Repr.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1127 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1128 case Num_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1129 case Str_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1130 /* Nothing to do here. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1131 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1132 /* The following exprs can be assignment targets. */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1133 case Attribute_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1134 VISIT(st, expr, e->v.Attribute.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1135 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1136 case Subscript_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1137 VISIT(st, expr, e->v.Subscript.value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1138 VISIT(st, slice, e->v.Subscript.slice);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1139 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1140 case Name_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1141 if (!symtable_add_def(st, e->v.Name.id,
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1142 e->v.Name.ctx == Load ? USE : DEF_LOCAL))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1143 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1144 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1145 /* child nodes of List and Tuple will have expr_context set */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1146 case List_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1147 VISIT_SEQ(st, expr, e->v.List.elts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1148 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1149 case Tuple_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1150 VISIT_SEQ(st, expr, e->v.Tuple.elts);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1151 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1152 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1153 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1154 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1155
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1156 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1157 symtable_implicit_arg(struct symtable *st, int pos)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1158 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1159 PyObject *id = PyString_FromFormat(".%d", pos);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1160 if (id == NULL)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1161 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1162 if (!symtable_add_def(st, id, DEF_PARAM)) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1163 Py_DECREF(id);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1164 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1165 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1166 Py_DECREF(id);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1167 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1168 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1169
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1170 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1171 symtable_visit_params(struct symtable st, asdl_seq args, int toplevel)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1172 {
36226 bb6fa4a31f15 Fix icc warnings: shadowing local variable (i) and complex is set but not used, so remove Neal Norwitz <nnorwitz@gmail.com> parents: 36089 diff changeset	1173 int i;
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1174
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1175 /* go through all the toplevel arguments first */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1176 for (i = 0; i < asdl_seq_LEN(args); i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1177 expr_ty arg = asdl_seq_GET(args, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1178 if (arg->kind == Name_kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1179 assert(arg->v.Name.ctx == Param \|\|
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1180 (arg->v.Name.ctx == Store && !toplevel));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1181 if (!symtable_add_def(st, arg->v.Name.id, DEF_PARAM))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1182 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1183 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1184 else if (arg->kind == Tuple_kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1185 assert(arg->v.Tuple.ctx == Store);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1186 if (toplevel) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1187 if (!symtable_implicit_arg(st, i))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1188 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1189 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1190 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1191 else {
35893 825655bfdf20 Last batch of ref leaks in new AST code. Neal Norwitz <nnorwitz@gmail.com> parents: 35880 diff changeset	1192 PyErr_SetString(PyExc_SyntaxError,
825655bfdf20 Last batch of ref leaks in new AST code. Neal Norwitz <nnorwitz@gmail.com> parents: 35880 diff changeset	1193 "invalid expression in parameter list");
825655bfdf20 Last batch of ref leaks in new AST code. Neal Norwitz <nnorwitz@gmail.com> parents: 35880 diff changeset	1194 PyErr_SyntaxLocation(st->st_filename,
825655bfdf20 Last batch of ref leaks in new AST code. Neal Norwitz <nnorwitz@gmail.com> parents: 35880 diff changeset	1195 st->st_cur->ste_lineno);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1196 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1197 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1198 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1199
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1200 if (!toplevel) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1201 if (!symtable_visit_params_nested(st, args))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1202 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1203 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1204
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1205 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1206 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1207
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1208 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1209 symtable_visit_params_nested(struct symtable st, asdl_seq args)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1210 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1211 int i;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1212 for (i = 0; i < asdl_seq_LEN(args); i++) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1213 expr_ty arg = asdl_seq_GET(args, i);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1214 if (arg->kind == Tuple_kind &&
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1215 !symtable_visit_params(st, arg->v.Tuple.elts, 0))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1216 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1217 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1218
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1219 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1220 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1221
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1222 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1223 symtable_visit_arguments(struct symtable *st, arguments_ty a)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1224 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1225 /* skip default arguments inside function block
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1226 XXX should ast be different?
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1227 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1228 if (a->args && !symtable_visit_params(st, a->args, 1))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1229 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1230 if (a->vararg) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1231 if (!symtable_add_def(st, a->vararg, DEF_PARAM))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1232 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1233 st->st_cur->ste_varargs = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1234 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1235 if (a->kwarg) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1236 if (!symtable_add_def(st, a->kwarg, DEF_PARAM))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1237 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1238 st->st_cur->ste_varkeywords = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1239 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1240 if (a->args && !symtable_visit_params_nested(st, a->args))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1241 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1242 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1243 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1244
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1245
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1246 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1247 symtable_visit_excepthandler(struct symtable *st, excepthandler_ty eh)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1248 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1249 if (eh->type)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1250 VISIT(st, expr, eh->type);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1251 if (eh->name)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1252 VISIT(st, expr, eh->name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1253 VISIT_SEQ(st, stmt, eh->body);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1254 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1255 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1256
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1257
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1258 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1259 symtable_visit_alias(struct symtable *st, alias_ty a)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1260 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1261 /* Compute store_name, the name actually bound by the import
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1262 operation. It is diferent than a->name when a->name is a
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1263 dotted package name (e.g. spam.eggs)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1264 */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1265 PyObject *store_name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1266 PyObject *name = (a->asname == NULL) ? a->name : a->asname;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1267 const char *base = PyString_AS_STRING(name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1268 char *dot = strchr(base, '.');
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1269 if (dot)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1270 store_name = PyString_FromStringAndSize(base, dot - base);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1271 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1272 store_name = name;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1273 Py_INCREF(store_name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1274 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1275 if (strcmp(PyString_AS_STRING(name), "*")) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1276 int r = symtable_add_def(st, store_name, DEF_IMPORT);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1277 Py_DECREF(store_name);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1278 return r;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1279 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1280 else {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1281 if (st->st_cur->ste_type != ModuleBlock) {
36089 4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations. Neal Norwitz <nnorwitz@gmail.com> parents: 35939 diff changeset	1282 int lineno = st->st_cur->ste_lineno;
4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations. Neal Norwitz <nnorwitz@gmail.com> parents: 35939 diff changeset	1283 if (!symtable_warn(st, IMPORT_STAR_WARNING, lineno)) {
35939 79374eb6db51 Fix a few more ref leaks. Backport candidate Neal Norwitz <nnorwitz@gmail.com> parents: 35893 diff changeset	1284 Py_DECREF(store_name);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1285 return 0;
35939 79374eb6db51 Fix a few more ref leaks. Backport candidate Neal Norwitz <nnorwitz@gmail.com> parents: 35893 diff changeset	1286 }
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1287 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1288 st->st_cur->ste_unoptimized \|= OPT_IMPORT_STAR;
35893 825655bfdf20 Last batch of ref leaks in new AST code. Neal Norwitz <nnorwitz@gmail.com> parents: 35880 diff changeset	1289 Py_DECREF(store_name);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1290 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1291 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1292 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1293
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1294
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1295 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1296 symtable_visit_comprehension(struct symtable *st, comprehension_ty lc)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1297 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1298 VISIT(st, expr, lc->target);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1299 VISIT(st, expr, lc->iter);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1300 VISIT_SEQ(st, expr, lc->ifs);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1301 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1302 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1303
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1304
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1305 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1306 symtable_visit_keyword(struct symtable *st, keyword_ty k)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1307 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1308 VISIT(st, expr, k->value);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1309 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1310 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1311
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1312
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1313 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1314 symtable_visit_slice(struct symtable *st, slice_ty s)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1315 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1316 switch (s->kind) {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1317 case Slice_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1318 if (s->v.Slice.lower)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1319 VISIT(st, expr, s->v.Slice.lower)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1320 if (s->v.Slice.upper)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1321 VISIT(st, expr, s->v.Slice.upper)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1322 if (s->v.Slice.step)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1323 VISIT(st, expr, s->v.Slice.step)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1324 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1325 case ExtSlice_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1326 VISIT_SEQ(st, slice, s->v.ExtSlice.dims)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1327 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1328 case Index_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1329 VISIT(st, expr, s->v.Index.value)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1330 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1331 case Ellipsis_kind:
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1332 break;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1333 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1334 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1335 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1336
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1337 static int
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1338 symtable_visit_genexp(struct symtable *st, expr_ty e)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1339 {
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1340 comprehension_ty outermost = ((comprehension_ty)
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1341 (asdl_seq_GET(e->v.GeneratorExp.generators, 0)));
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1342 /* Outermost iterator is evaluated in current scope */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1343 VISIT(st, expr, outermost->iter);
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1344 /* Create generator scope for the rest */
35880 0d1e2e73c3ec Bring handling of genexpr in line with other anonymous scope names Nick Coghlan <ncoghlan@gmail.com> parents: 35863 diff changeset	1345 if (!symtable_enter_block(st, GET_IDENTIFIER(genexpr),
0d1e2e73c3ec Bring handling of genexpr in line with other anonymous scope names Nick Coghlan <ncoghlan@gmail.com> parents: 35863 diff changeset	1346 FunctionBlock, (void *)e, 0)) {
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1347 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1348 }
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1349 st->st_cur->ste_generator = 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1350 /* Outermost iter is received as an argument */
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1351 if (!symtable_implicit_arg(st, 0)) {
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	1352 symtable_exit_block(st, (void *)e);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1353 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1354 }
35863 79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	1355 VISIT_IN_BLOCK(st, expr, outermost->target, (void*)e);
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	1356 VISIT_SEQ_IN_BLOCK(st, expr, outermost->ifs, (void*)e);
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	1357 VISIT_SEQ_TAIL_IN_BLOCK(st, comprehension,
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	1358 e->v.GeneratorExp.generators, 1, (void*)e);
79f2ce320192 Fix a lot of memory and ref leaks in error paths. Neal Norwitz <nnorwitz@gmail.com> parents: 35793 diff changeset	1359 VISIT_IN_BLOCK(st, expr, e->v.GeneratorExp.elt, (void*)e);
35742 1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1360 if (!symtable_exit_block(st, (void *)e))
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1361 return 0;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1362 return 1;
1c4d192f1568 Merge ast-branch to head Jeremy Hylton <jeremy@alum.mit.edu> parents: 32121 diff changeset	1363 }

Mercurial > cpython-lru_cache-weakref

annotate Python/symtable.c @ 36226:bb6fa4a31f15 legacy-trunk