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annotate Python/symtable.c @ 81677:cd87afe18ff8

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revert #16672 for incorrect semantics
author Benjamin Peterson <benjamin@python.org>
date Wed, 23 Jan 2013 08:38:47 -0500
parents 03f92a9f0875
children 7c5c678e4164
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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a47d93ef103a Relax the rules for using 'from ... import *' and exec in the presence
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1 #include "Python.h"
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2 #include "Python-ast.h"
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3 #include "code.h"
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4 #include "symtable.h"
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5 #include "structmember.h"
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6
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7 /* error strings used for warnings */
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8 #define GLOBAL_AFTER_ASSIGN \
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9 "name '%.400s' is assigned to before global declaration"
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10
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11 #define NONLOCAL_AFTER_ASSIGN \
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12 "name '%.400s' is assigned to before nonlocal declaration"
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13
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14 #define GLOBAL_AFTER_USE \
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15 "name '%.400s' is used prior to global declaration"
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16
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17 #define NONLOCAL_AFTER_USE \
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18 "name '%.400s' is used prior to nonlocal declaration"
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19
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20 #define IMPORT_STAR_WARNING "import * only allowed at module level"
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21
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796d150e45a9 No need to export PySTEntry_New, it is only used in symtable.c
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22 static PySTEntryObject *
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23 ste_new(struct symtable *st, identifier name, _Py_block_ty block,
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24 void *key, int lineno, int col_offset)
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25 {
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26 PySTEntryObject *ste = NULL;
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27 PyObject *k = NULL;
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28
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29 k = PyLong_FromVoidPtr(key);
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30 if (k == NULL)
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31 goto fail;
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32 ste = PyObject_New(PySTEntryObject, &PySTEntry_Type);
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33 if (ste == NULL) {
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34 Py_DECREF(k);
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35 goto fail;
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36 }
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37 ste->ste_table = st;
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38 ste->ste_id = k; /* ste owns reference to k */
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39
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40 ste->ste_name = name;
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41 Py_INCREF(name);
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42
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43 ste->ste_symbols = NULL;
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44 ste->ste_varnames = NULL;
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45 ste->ste_children = NULL;
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46
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47 ste->ste_symbols = PyDict_New();
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48 if (ste->ste_symbols == NULL)
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49 goto fail;
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50
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51 ste->ste_varnames = PyList_New(0);
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52 if (ste->ste_varnames == NULL)
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53 goto fail;
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54
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55 ste->ste_children = PyList_New(0);
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56 if (ste->ste_children == NULL)
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57 goto fail;
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58
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59 ste->ste_directives = NULL;
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60
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61 ste->ste_type = block;
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62 ste->ste_unoptimized = 0;
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63 ste->ste_nested = 0;
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64 ste->ste_free = 0;
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65 ste->ste_varargs = 0;
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66 ste->ste_varkeywords = 0;
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67 ste->ste_opt_lineno = 0;
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68 ste->ste_opt_col_offset = 0;
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69 ste->ste_tmpname = 0;
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70 ste->ste_lineno = lineno;
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71 ste->ste_col_offset = col_offset;
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72
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73 if (st->st_cur != NULL &&
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74 (st->st_cur->ste_nested ||
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75 st->st_cur->ste_type == FunctionBlock))
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76 ste->ste_nested = 1;
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77 ste->ste_child_free = 0;
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78 ste->ste_generator = 0;
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79 ste->ste_returns_value = 0;
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80
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81 if (PyDict_SetItem(st->st_blocks, ste->ste_id, (PyObject *)ste) < 0)
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82 goto fail;
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83
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84 return ste;
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85 fail:
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86 Py_XDECREF(ste);
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87 return NULL;
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88 }
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89
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90 static PyObject *
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91 ste_repr(PySTEntryObject *ste)
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92 {
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93 return PyUnicode_FromFormat("<symtable entry %U(%ld), line %d>",
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94 ste->ste_name,
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95 PyLong_AS_LONG(ste->ste_id), ste->ste_lineno);
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96 }
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97
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98 static void
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99 ste_dealloc(PySTEntryObject *ste)
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100 {
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101 ste->ste_table = NULL;
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102 Py_XDECREF(ste->ste_id);
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103 Py_XDECREF(ste->ste_name);
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104 Py_XDECREF(ste->ste_symbols);
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105 Py_XDECREF(ste->ste_varnames);
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106 Py_XDECREF(ste->ste_children);
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107 Py_XDECREF(ste->ste_directives);
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108 PyObject_Del(ste);
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109 }
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110
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111 #define OFF(x) offsetof(PySTEntryObject, x)
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112
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113 static PyMemberDef ste_memberlist[] = {
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114 {"id", T_OBJECT, OFF(ste_id), READONLY},
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115 {"name", T_OBJECT, OFF(ste_name), READONLY},
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116 {"symbols", T_OBJECT, OFF(ste_symbols), READONLY},
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117 {"varnames", T_OBJECT, OFF(ste_varnames), READONLY},
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118 {"children", T_OBJECT, OFF(ste_children), READONLY},
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119 {"optimized",T_INT, OFF(ste_unoptimized), READONLY},
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120 {"nested", T_INT, OFF(ste_nested), READONLY},
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121 {"type", T_INT, OFF(ste_type), READONLY},
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122 {"lineno", T_INT, OFF(ste_lineno), READONLY},
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123 {NULL}
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124 };
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125
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126 PyTypeObject PySTEntry_Type = {
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127 PyVarObject_HEAD_INIT(&PyType_Type, 0)
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128 "symtable entry",
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129 sizeof(PySTEntryObject),
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130 0,
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131 (destructor)ste_dealloc, /* tp_dealloc */
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132 0, /* tp_print */
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133 0, /* tp_getattr */
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134 0, /* tp_setattr */
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135 0, /* tp_reserved */
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136 (reprfunc)ste_repr, /* tp_repr */
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137 0, /* tp_as_number */
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138 0, /* tp_as_sequence */
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139 0, /* tp_as_mapping */
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140 0, /* tp_hash */
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141 0, /* tp_call */
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142 0, /* tp_str */
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143 PyObject_GenericGetAttr, /* tp_getattro */
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144 0, /* tp_setattro */
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145 0, /* tp_as_buffer */
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146 Py_TPFLAGS_DEFAULT, /* tp_flags */
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147 0, /* tp_doc */
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148 0, /* tp_traverse */
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149 0, /* tp_clear */
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150 0, /* tp_richcompare */
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151 0, /* tp_weaklistoffset */
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152 0, /* tp_iter */
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153 0, /* tp_iternext */
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154 0, /* tp_methods */
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155 ste_memberlist, /* tp_members */
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156 0, /* tp_getset */
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157 0, /* tp_base */
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158 0, /* tp_dict */
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159 0, /* tp_descr_get */
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160 0, /* tp_descr_set */
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161 0, /* tp_dictoffset */
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162 0, /* tp_init */
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163 0, /* tp_alloc */
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164 0, /* tp_new */
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165 };
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166
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167 static int symtable_analyze(struct symtable *st);
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168 static int symtable_warn(struct symtable *st, char *msg, int lineno);
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169 static int symtable_enter_block(struct symtable *st, identifier name,
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170 _Py_block_ty block, void *ast, int lineno,
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171 int col_offset);
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172 static int symtable_exit_block(struct symtable *st, void *ast);
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173 static int symtable_visit_stmt(struct symtable *st, stmt_ty s);
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174 static int symtable_visit_expr(struct symtable *st, expr_ty s);
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175 static int symtable_visit_genexp(struct symtable *st, expr_ty s);
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176 static int symtable_visit_listcomp(struct symtable *st, expr_ty s);
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177 static int symtable_visit_setcomp(struct symtable *st, expr_ty s);
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178 static int symtable_visit_dictcomp(struct symtable *st, expr_ty s);
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179 static int symtable_visit_arguments(struct symtable *st, arguments_ty);
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180 static int symtable_visit_excepthandler(struct symtable *st, excepthandler_ty);
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181 static int symtable_visit_alias(struct symtable *st, alias_ty);
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182 static int symtable_visit_comprehension(struct symtable *st, comprehension_ty);
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183 static int symtable_visit_keyword(struct symtable *st, keyword_ty);
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184 static int symtable_visit_slice(struct symtable *st, slice_ty);
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185 static int symtable_visit_params(struct symtable *st, asdl_seq *args);
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186 static int symtable_visit_argannotations(struct symtable *st, asdl_seq *args);
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187 static int symtable_implicit_arg(struct symtable *st, int pos);
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188 static int symtable_visit_annotations(struct symtable *st, stmt_ty s);
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189 static int symtable_visit_withitem(struct symtable *st, withitem_ty item);
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190
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191
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192 static identifier top = NULL, lambda = NULL, genexpr = NULL,
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193 listcomp = NULL, setcomp = NULL, dictcomp = NULL,
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194 __class__ = NULL, __locals__ = NULL;
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195
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196 #define GET_IDENTIFIER(VAR) \
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197 ((VAR) ? (VAR) : ((VAR) = PyUnicode_InternFromString(# VAR)))
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198
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199 #define DUPLICATE_ARGUMENT \
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200 "duplicate argument '%U' in function definition"
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201
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202 static struct symtable *
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203 symtable_new(void)
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204 {
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205 struct symtable *st;
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206
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207 st = (struct symtable *)PyMem_Malloc(sizeof(struct symtable));
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208 if (st == NULL)
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209 return NULL;
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210
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211 st->st_filename = NULL;
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212 st->st_blocks = NULL;
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213
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214 if ((st->st_stack = PyList_New(0)) == NULL)
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215 goto fail;
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216 if ((st->st_blocks = PyDict_New()) == NULL)
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217 goto fail;
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218 st->st_cur = NULL;
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219 st->st_private = NULL;
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220 return st;
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221 fail:
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222 PySymtable_Free(st);
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223 return NULL;
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224 }
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225
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226 /* When compiling the use of C stack is probably going to be a lot
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227 lighter than when executing Python code but still can overflow
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228 and causing a Python crash if not checked (e.g. eval("()"*300000)).
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229 Using the current recursion limit for the compiler seems too
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230 restrictive (it caused at least one test to fail) so a factor is
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231 used to allow deeper recursion when compiling an expression.
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232
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233 Using a scaling factor means this should automatically adjust when
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234 the recursion limit is adjusted for small or large C stack allocations.
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235 */
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236 #define COMPILER_STACK_FRAME_SCALE 3
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237
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238 struct symtable *
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239 PySymtable_Build(mod_ty mod, const char *filename, PyFutureFeatures *future)
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240 {
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241 struct symtable *st = symtable_new();
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242 asdl_seq *seq;
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243 int i;
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244 PyThreadState *tstate;
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245
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246 if (st == NULL)
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247 return st;
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248 st->st_filename = filename;
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249 st->st_future = future;
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250
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251 /* Setup recursion depth check counters */
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252 tstate = PyThreadState_GET();
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253 if (!tstate) {
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254 PySymtable_Free(st);
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255 return NULL;
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256 }
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257 st->recursion_depth = tstate->recursion_depth * COMPILER_STACK_FRAME_SCALE;
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258 st->recursion_limit = Py_GetRecursionLimit() * COMPILER_STACK_FRAME_SCALE;
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259
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260 /* Make the initial symbol information gathering pass */
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261 if (!GET_IDENTIFIER(top) ||
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262 !symtable_enter_block(st, top, ModuleBlock, (void *)mod, 0, 0)) {
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263 PySymtable_Free(st);
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264 return NULL;
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265 }
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266
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267 st->st_top = st->st_cur;
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268 st->st_cur->ste_unoptimized = OPT_TOPLEVEL;
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269 switch (mod->kind) {
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270 case Module_kind:
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271 seq = mod->v.Module.body;
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272 for (i = 0; i < asdl_seq_LEN(seq); i++)
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273 if (!symtable_visit_stmt(st,
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274 (stmt_ty)asdl_seq_GET(seq, i)))
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275 goto error;
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276 break;
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277 case Expression_kind:
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278 if (!symtable_visit_expr(st, mod->v.Expression.body))
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279 goto error;
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280 break;
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281 case Interactive_kind:
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282 seq = mod->v.Interactive.body;
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283 for (i = 0; i < asdl_seq_LEN(seq); i++)
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284 if (!symtable_visit_stmt(st,
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285 (stmt_ty)asdl_seq_GET(seq, i)))
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286 goto error;
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287 break;
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288 case Suite_kind:
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289 PyErr_SetString(PyExc_RuntimeError,
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290 "this compiler does not handle Suites");
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291 goto error;
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292 }
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293 if (!symtable_exit_block(st, (void *)mod)) {
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294 PySymtable_Free(st);
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295 return NULL;
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296 }
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297 /* Make the second symbol analysis pass */
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298 if (symtable_analyze(st))
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299 return st;
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300 PySymtable_Free(st);
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301 return NULL;
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302 error:
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303 (void) symtable_exit_block(st, (void *)mod);
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304 PySymtable_Free(st);
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305 return NULL;
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306 }
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307
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308 void
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309 PySymtable_Free(struct symtable *st)
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310 {
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311 Py_XDECREF(st->st_blocks);
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312 Py_XDECREF(st->st_stack);
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313 PyMem_Free((void *)st);
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314 }
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315
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316 PySTEntryObject *
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317 PySymtable_Lookup(struct symtable *st, void *key)
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318 {
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319 PyObject *k, *v;
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320
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321 k = PyLong_FromVoidPtr(key);
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322 if (k == NULL)
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323 return NULL;
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324 v = PyDict_GetItem(st->st_blocks, k);
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325 if (v) {
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326 assert(PySTEntry_Check(v));
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327 Py_INCREF(v);
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328 }
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329 else {
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330 PyErr_SetString(PyExc_KeyError,
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331 "unknown symbol table entry");
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332 }
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333
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334 Py_DECREF(k);
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335 return (PySTEntryObject *)v;
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336 }
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337
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338 int
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339 PyST_GetScope(PySTEntryObject *ste, PyObject *name)
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340 {
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341 PyObject *v = PyDict_GetItem(ste->ste_symbols, name);
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342 if (!v)
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343 return 0;
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344 assert(PyLong_Check(v));
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345 return (PyLong_AS_LONG(v) >> SCOPE_OFFSET) & SCOPE_MASK;
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346 }
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347
80147
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348 static int
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349 error_at_directive(PySTEntryObject *ste, PyObject *name)
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350 {
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351 Py_ssize_t i;
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352 PyObject *data;
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353 assert(ste->ste_directives);
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354 for (i = 0; ; i++) {
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355 data = PyList_GET_ITEM(ste->ste_directives, i);
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356 assert(PyTuple_CheckExact(data));
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357 if (PyTuple_GET_ITEM(data, 0) == name)
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358 break;
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359 }
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360 PyErr_SyntaxLocationEx(ste->ste_table->st_filename,
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361 PyLong_AsLong(PyTuple_GET_ITEM(data, 1)),
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362 PyLong_AsLong(PyTuple_GET_ITEM(data, 2)));
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363 return 0;
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364 }
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365
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366
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367 /* Analyze raw symbol information to determine scope of each name.
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368
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369 The next several functions are helpers for symtable_analyze(),
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370 which determines whether a name is local, global, or free. In addition,
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371 it determines which local variables are cell variables; they provide
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372 bindings that are used for free variables in enclosed blocks.
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373
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374 There are also two kinds of global variables, implicit and explicit. An
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375 explicit global is declared with the global statement. An implicit
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376 global is a free variable for which the compiler has found no binding
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377 in an enclosing function scope. The implicit global is either a global
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378 or a builtin. Python's module and class blocks use the xxx_NAME opcodes
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379 to handle these names to implement slightly odd semantics. In such a
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380 block, the name is treated as global until it is assigned to; then it
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381 is treated as a local.
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382
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383 The symbol table requires two passes to determine the scope of each name.
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384 The first pass collects raw facts from the AST via the symtable_visit_*
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385 functions: the name is a parameter here, the name is used but not defined
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386 here, etc. The second pass analyzes these facts during a pass over the
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387 PySTEntryObjects created during pass 1.
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388
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389 When a function is entered during the second pass, the parent passes
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390 the set of all name bindings visible to its children. These bindings
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391 are used to determine if non-local variables are free or implicit globals.
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392 Names which are explicitly declared nonlocal must exist in this set of
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393 visible names - if they do not, a syntax error is raised. After doing
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394 the local analysis, it analyzes each of its child blocks using an
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395 updated set of name bindings.
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396
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397 The children update the free variable set. If a local variable is added to
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398 the free variable set by the child, the variable is marked as a cell. The
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399 function object being defined must provide runtime storage for the variable
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400 that may outlive the function's frame. Cell variables are removed from the
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401 free set before the analyze function returns to its parent.
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402
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403 During analysis, the names are:
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404 symbols: dict mapping from symbol names to flag values (including offset scope values)
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405 scopes: dict mapping from symbol names to scope values (no offset)
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406 local: set of all symbol names local to the current scope
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407 bound: set of all symbol names local to a containing function scope
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408 free: set of all symbol names referenced but not bound in child scopes
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409 global: set of all symbol names explicitly declared as global
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410 */
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411
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412 #define SET_SCOPE(DICT, NAME, I) { \
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413 PyObject *o = PyLong_FromLong(I); \
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414 if (!o) \
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415 return 0; \
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416 if (PyDict_SetItem((DICT), (NAME), o) < 0) { \
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417 Py_DECREF(o); \
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418 return 0; \
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419 } \
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420 Py_DECREF(o); \
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421 }
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422
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423 /* Decide on scope of name, given flags.
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424
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425 The namespace dictionaries may be modified to record information
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426 about the new name. For example, a new global will add an entry to
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427 global. A name that was global can be changed to local.
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428 */
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429
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430 static int
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431 analyze_name(PySTEntryObject *ste, PyObject *scopes, PyObject *name, long flags,
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432 PyObject *bound, PyObject *local, PyObject *free,
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433 PyObject *global)
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434 {
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435 if (flags & DEF_GLOBAL) {
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436 if (flags & DEF_PARAM) {
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437 PyErr_Format(PyExc_SyntaxError,
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438 "name '%U' is parameter and global",
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439 name);
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440 return error_at_directive(ste, name);
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441 }
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442 if (flags & DEF_NONLOCAL) {
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443 PyErr_Format(PyExc_SyntaxError,
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444 "name '%U' is nonlocal and global",
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445 name);
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446 return error_at_directive(ste, name);
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447 }
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448 SET_SCOPE(scopes, name, GLOBAL_EXPLICIT);
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449 if (PySet_Add(global, name) < 0)
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450 return 0;
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451 if (bound && (PySet_Discard(bound, name) < 0))
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452 return 0;
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453 return 1;
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454 }
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455 if (flags & DEF_NONLOCAL) {
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456 if (flags & DEF_PARAM) {
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457 PyErr_Format(PyExc_SyntaxError,
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458 "name '%U' is parameter and nonlocal",
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459 name);
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460 return error_at_directive(ste, name);
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461 }
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462 if (!bound) {
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463 PyErr_Format(PyExc_SyntaxError,
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464 "nonlocal declaration not allowed at module level");
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465 return error_at_directive(ste, name);
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466 }
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467 if (!PySet_Contains(bound, name)) {
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468 PyErr_Format(PyExc_SyntaxError,
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469 "no binding for nonlocal '%U' found",
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470 name);
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471
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472 return error_at_directive(ste, name);
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473 }
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474 SET_SCOPE(scopes, name, FREE);
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475 ste->ste_free = 1;
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476 return PySet_Add(free, name) >= 0;
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477 }
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478 if (flags & DEF_BOUND) {
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479 SET_SCOPE(scopes, name, LOCAL);
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480 if (PySet_Add(local, name) < 0)
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481 return 0;
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482 if (PySet_Discard(global, name) < 0)
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483 return 0;
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484 return 1;
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485 }
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486 /* If an enclosing block has a binding for this name, it
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487 is a free variable rather than a global variable.
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488 Note that having a non-NULL bound implies that the block
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489 is nested.
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490 */
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491 if (bound && PySet_Contains(bound, name)) {
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492 SET_SCOPE(scopes, name, FREE);
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493 ste->ste_free = 1;
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494 return PySet_Add(free, name) >= 0;
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495 }
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496 /* If a parent has a global statement, then call it global
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497 explicit? It could also be global implicit.
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498 */
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499 if (global && PySet_Contains(global, name)) {
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500 SET_SCOPE(scopes, name, GLOBAL_IMPLICIT);
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501 return 1;
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502 }
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503 if (ste->ste_nested)
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504 ste->ste_free = 1;
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505 SET_SCOPE(scopes, name, GLOBAL_IMPLICIT);
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506 return 1;
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507 }
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508
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509 #undef SET_SCOPE
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510
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511 /* If a name is defined in free and also in locals, then this block
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512 provides the binding for the free variable. The name should be
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513 marked CELL in this block and removed from the free list.
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514
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diff changeset
515 Note that the current block's free variables are included in free.
1c4d192f1568 Merge ast-branch to head
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diff changeset
516 That's safe because no name can be free and local in the same scope.
42084
229c28cb9afb Merged revisions 55817-55961 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42045
diff changeset
517
43708
c34720777cb6 Bug #1356: Avoid using the C99 keyword 'restrict'.
Martin v. Löwis <martin@v.loewis.de>
parents: 43102
diff changeset
518 The 'restricted' argument may be set to a string to restrict the analysis
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Guido van Rossum <guido@python.org>
parents: 42045
diff changeset
519 to the one variable whose name equals that string (e.g. "__class__").
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
520 */
1c4d192f1568 Merge ast-branch to head
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diff changeset
521
1c4d192f1568 Merge ast-branch to head
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diff changeset
522 static int
43708
c34720777cb6 Bug #1356: Avoid using the C99 keyword 'restrict'.
Martin v. Löwis <martin@v.loewis.de>
parents: 43102
diff changeset
523 analyze_cells(PyObject *scopes, PyObject *free, const char *restricted)
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
524 {
61467
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525 PyObject *name, *v, *v_cell;
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diff changeset
526 int success = 0;
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diff changeset
527 Py_ssize_t pos = 0;
35742
1c4d192f1568 Merge ast-branch to head
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528
61467
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diff changeset
529 v_cell = PyLong_FromLong(CELL);
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diff changeset
530 if (!v_cell)
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parents: 57378
diff changeset
531 return 0;
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diff changeset
532 while (PyDict_Next(scopes, &pos, &name, &v)) {
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
533 long scope;
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parents: 57378
diff changeset
534 assert(PyLong_Check(v));
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535 scope = PyLong_AS_LONG(v);
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536 if (scope != LOCAL)
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parents: 57378
diff changeset
537 continue;
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538 if (!PySet_Contains(free, name))
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539 continue;
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540 if (restricted != NULL &&
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diff changeset
541 PyUnicode_CompareWithASCIIString(name, restricted))
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542 continue;
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parents: 57378
diff changeset
543 /* Replace LOCAL with CELL for this name, and remove
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diff changeset
544 from free. It is safe to replace the value of name
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diff changeset
545 in the dict, because it will not cause a resize.
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546 */
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diff changeset
547 if (PyDict_SetItem(scopes, name, v_cell) < 0)
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diff changeset
548 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
549 if (PySet_Discard(free, name) < 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
550 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
551 }
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552 success = 1;
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
553 error:
61467
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diff changeset
554 Py_DECREF(v_cell);
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diff changeset
555 return success;
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
556 }
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
557
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
558 /* Check for illegal statements in unoptimized namespaces */
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
559 static int
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
560 check_unoptimized(const PySTEntryObject* ste) {
61467
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diff changeset
561 const char* trailer;
35742
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562
61467
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diff changeset
563 if (ste->ste_type != FunctionBlock || !ste->ste_unoptimized
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
564 || !(ste->ste_free || ste->ste_child_free))
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diff changeset
565 return 1;
35742
1c4d192f1568 Merge ast-branch to head
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566
61467
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diff changeset
567 trailer = (ste->ste_child_free ?
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
568 "contains a nested function with free variables" :
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
569 "is a nested function");
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
570
61467
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diff changeset
571 switch (ste->ste_unoptimized) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
572 case OPT_TOPLEVEL: /* import * at top-level is fine */
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diff changeset
573 return 1;
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diff changeset
574 case OPT_IMPORT_STAR:
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diff changeset
575 PyErr_Format(PyExc_SyntaxError,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
576 "import * is not allowed in function '%U' because it %s",
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
577 ste->ste_name, trailer);
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diff changeset
578 break;
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diff changeset
579 }
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
580
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
581 PyErr_SyntaxLocationEx(ste->ste_table->st_filename, ste->ste_opt_lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
582 ste->ste_opt_col_offset);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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583 return 0;
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1c4d192f1568 Merge ast-branch to head
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584 }
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diff changeset
585
61467
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diff changeset
586 /* Enter the final scope information into the ste_symbols dict.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
587 *
35742
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diff changeset
588 * All arguments are dicts. Modifies symbols, others are read-only.
1c4d192f1568 Merge ast-branch to head
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diff changeset
589 */
1c4d192f1568 Merge ast-branch to head
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diff changeset
590 static int
61467
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diff changeset
591 update_symbols(PyObject *symbols, PyObject *scopes,
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36739
diff changeset
592 PyObject *bound, PyObject *free, int classflag)
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
593 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
594 PyObject *name = NULL, *itr = NULL;
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diff changeset
595 PyObject *v = NULL, *v_scope = NULL, *v_new = NULL, *v_free = NULL;
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diff changeset
596 Py_ssize_t pos = 0;
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diff changeset
597
61467
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diff changeset
598 /* Update scope information for all symbols in this scope */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
599 while (PyDict_Next(symbols, &pos, &name, &v)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
600 long scope, flags;
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diff changeset
601 assert(PyLong_Check(v));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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602 flags = PyLong_AS_LONG(v);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
603 v_scope = PyDict_GetItem(scopes, name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
604 assert(v_scope && PyLong_Check(v_scope));
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diff changeset
605 scope = PyLong_AS_LONG(v_scope);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
606 flags |= (scope << SCOPE_OFFSET);
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diff changeset
607 v_new = PyLong_FromLong(flags);
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diff changeset
608 if (!v_new)
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diff changeset
609 return 0;
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parents: 57378
diff changeset
610 if (PyDict_SetItem(symbols, name, v_new) < 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
611 Py_DECREF(v_new);
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diff changeset
612 return 0;
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diff changeset
613 }
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614 Py_DECREF(v_new);
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diff changeset
615 }
35742
1c4d192f1568 Merge ast-branch to head
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616
61467
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diff changeset
617 /* Record not yet resolved free variables from children (if any) */
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618 v_free = PyLong_FromLong(FREE << SCOPE_OFFSET);
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diff changeset
619 if (!v_free)
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diff changeset
620 return 0;
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diff changeset
621
61467
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622 itr = PyObject_GetIter(free);
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diff changeset
623 if (!itr)
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624 goto error;
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625
61467
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diff changeset
626 while ((name = PyIter_Next(itr))) {
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diff changeset
627 v = PyDict_GetItem(symbols, name);
41464
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
628
61467
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diff changeset
629 /* Handle symbol that already exists in this scope */
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diff changeset
630 if (v) {
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diff changeset
631 /* Handle a free variable in a method of
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diff changeset
632 the class that has the same name as a local
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diff changeset
633 or global in the class scope.
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diff changeset
634 */
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diff changeset
635 if (classflag &&
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diff changeset
636 PyLong_AS_LONG(v) & (DEF_BOUND | DEF_GLOBAL)) {
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diff changeset
637 long flags = PyLong_AS_LONG(v) | DEF_FREE_CLASS;
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diff changeset
638 v_new = PyLong_FromLong(flags);
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diff changeset
639 if (!v_new) {
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diff changeset
640 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
641 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
642 if (PyDict_SetItem(symbols, name, v_new) < 0) {
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diff changeset
643 Py_DECREF(v_new);
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diff changeset
644 goto error;
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parents: 57378
diff changeset
645 }
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diff changeset
646 Py_DECREF(v_new);
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diff changeset
647 }
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648 /* It's a cell, or already free in this scope */
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diff changeset
649 Py_DECREF(name);
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diff changeset
650 continue;
35742
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Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
651 }
61467
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diff changeset
652 /* Handle global symbol */
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diff changeset
653 if (!PySet_Contains(bound, name)) {
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parents: 57378
diff changeset
654 Py_DECREF(name);
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parents: 57378
diff changeset
655 continue; /* it's a global */
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parents: 57378
diff changeset
656 }
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diff changeset
657 /* Propagate new free symbol up the lexical stack */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
658 if (PyDict_SetItem(symbols, name, v_free) < 0) {
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
659 goto error;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
660 }
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parents: 57378
diff changeset
661 Py_DECREF(name);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
662 }
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parents: 57378
diff changeset
663 Py_DECREF(itr);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
664 Py_DECREF(v_free);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
665 return 1;
41464
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
666 error:
61467
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diff changeset
667 Py_XDECREF(v_free);
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parents: 57378
diff changeset
668 Py_XDECREF(itr);
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parents: 57378
diff changeset
669 Py_XDECREF(name);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
670 return 0;
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
671 }
35742
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Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
672
1c4d192f1568 Merge ast-branch to head
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diff changeset
673 /* Make final symbol table decisions for block of ste.
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
674
35742
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diff changeset
675 Arguments:
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
676 ste -- current symtable entry (input/output)
52528
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Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
677 bound -- set of variables bound in enclosing scopes (input). bound
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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diff changeset
678 is NULL for module blocks.
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
679 free -- set of free variables in enclosed scopes (output)
1c4d192f1568 Merge ast-branch to head
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diff changeset
680 globals -- set of declared global variables in enclosing scopes (input)
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
681
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
682 The implementation uses two mutually recursive functions,
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
683 analyze_block() and analyze_child_block(). analyze_block() is
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
684 responsible for analyzing the individual names defined in a block.
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
685 analyze_child_block() prepares temporary namespace dictionaries
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
686 used to evaluated nested blocks.
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
687
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
688 The two functions exist because a child block should see the name
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
689 bindings of its enclosing blocks, but those bindings should not
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
690 propagate back to a parent block.
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
691 */
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
692
1c4d192f1568 Merge ast-branch to head
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diff changeset
693 static int
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
694 analyze_child_block(PySTEntryObject *entry, PyObject *bound, PyObject *free,
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
695 PyObject *global, PyObject* child_free);
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
696
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
697 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
698 analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
699 PyObject *global)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
700 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
701 PyObject *name, *v, *local = NULL, *scopes = NULL, *newbound = NULL;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
702 PyObject *newglobal = NULL, *newfree = NULL, *allfree = NULL;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
703 PyObject *temp;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
704 int i, success = 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
705 Py_ssize_t pos = 0;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
706
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
707 local = PySet_New(NULL); /* collect new names bound in block */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
708 if (!local)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
709 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
710 scopes = PyDict_New(); /* collect scopes defined for each name */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
711 if (!scopes)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
712 goto error;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
713
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
714 /* Allocate new global and bound variable dictionaries. These
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
715 dictionaries hold the names visible in nested blocks. For
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
716 ClassBlocks, the bound and global names are initialized
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
717 before analyzing names, because class bindings aren't
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
718 visible in methods. For other blocks, they are initialized
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
719 after names are analyzed.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
720 */
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
721
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
722 /* TODO(jhylton): Package these dicts in a struct so that we
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
723 can write reasonable helper functions?
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
724 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
725 newglobal = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
726 if (!newglobal)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
727 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
728 newfree = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
729 if (!newfree)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
730 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
731 newbound = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
732 if (!newbound)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
733 goto error;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
734
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
735 /* Class namespace has no effect on names visible in
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
736 nested functions, so populate the global and bound
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
737 sets to be passed to child blocks before analyzing
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
738 this one.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
739 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
740 if (ste->ste_type == ClassBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
741 /* Pass down known globals */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
742 temp = PyNumber_InPlaceOr(newglobal, global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
743 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
744 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
745 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
746 /* Pass down previously bound symbols */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
747 if (bound) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
748 temp = PyNumber_InPlaceOr(newbound, bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
749 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
750 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
751 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
752 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
753 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
754
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
755 while (PyDict_Next(ste->ste_symbols, &pos, &name, &v)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
756 long flags = PyLong_AS_LONG(v);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
757 if (!analyze_name(ste, scopes, name, flags,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
758 bound, local, free, global))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
759 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
760 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
761
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
762 /* Populate global and bound sets to be passed to children. */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
763 if (ste->ste_type != ClassBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
764 /* Add function locals to bound set */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
765 if (ste->ste_type == FunctionBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
766 temp = PyNumber_InPlaceOr(newbound, local);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
767 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
768 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
769 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
770 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
771 /* Pass down previously bound symbols */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
772 if (bound) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
773 temp = PyNumber_InPlaceOr(newbound, bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
774 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
775 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
776 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
777 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
778 /* Pass down known globals */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
779 temp = PyNumber_InPlaceOr(newglobal, global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
780 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
781 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
782 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
783 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
784 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
785 /* Special-case __class__ */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
786 if (!GET_IDENTIFIER(__class__))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
787 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
788 assert(PySet_Contains(local, __class__) == 1);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
789 if (PySet_Add(newbound, __class__) < 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
790 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
791 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
792
69231
b6fe63c914e4 Issue #9904: fix and clarify some comments + fix indentation in symtable code
Eli Bendersky <eliben@gmail.com>
parents: 68257
diff changeset
793 /* Recursively call analyze_child_block() on each child block.
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
794
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
795 newbound, newglobal now contain the names visible in
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
796 nested blocks. The free variables in the children will
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
797 be collected in allfree.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
798 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
799 allfree = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
800 if (!allfree)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
801 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
802 for (i = 0; i < PyList_GET_SIZE(ste->ste_children); ++i) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
803 PyObject *c = PyList_GET_ITEM(ste->ste_children, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
804 PySTEntryObject* entry;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
805 assert(c && PySTEntry_Check(c));
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
806 entry = (PySTEntryObject*)c;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
807 if (!analyze_child_block(entry, newbound, newfree, newglobal,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
808 allfree))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
809 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
810 /* Check if any children have free variables */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
811 if (entry->ste_free || entry->ste_child_free)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
812 ste->ste_child_free = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
813 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
814
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
815 temp = PyNumber_InPlaceOr(newfree, allfree);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
816 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
817 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
818 Py_DECREF(temp);
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
819
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
820 /* Check if any local variables must be converted to cell variables */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
821 if (ste->ste_type == FunctionBlock && !analyze_cells(scopes, newfree,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
822 NULL))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
823 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
824 else if (ste->ste_type == ClassBlock && !analyze_cells(scopes, newfree,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
825 "__class__"))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
826 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
827 /* Records the results of the analysis in the symbol table entry */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
828 if (!update_symbols(ste->ste_symbols, scopes, bound, newfree,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
829 ste->ste_type == ClassBlock))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
830 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
831 if (!check_unoptimized(ste))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
832 goto error;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
833
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
834 temp = PyNumber_InPlaceOr(free, newfree);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
835 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
836 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
837 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
838 success = 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
839 error:
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
840 Py_XDECREF(scopes);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
841 Py_XDECREF(local);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
842 Py_XDECREF(newbound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
843 Py_XDECREF(newglobal);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
844 Py_XDECREF(newfree);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
845 Py_XDECREF(allfree);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
846 if (!success)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
847 assert(PyErr_Occurred());
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
848 return success;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
849 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
850
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
851 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
852 analyze_child_block(PySTEntryObject *entry, PyObject *bound, PyObject *free,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
853 PyObject *global, PyObject* child_free)
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
854 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
855 PyObject *temp_bound = NULL, *temp_global = NULL, *temp_free = NULL;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
856 PyObject *temp;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
857
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
858 /* Copy the bound and global dictionaries.
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
859
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
860 These dictionary are used by all blocks enclosed by the
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
861 current block. The analyze_block() call modifies these
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
862 dictionaries.
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
863
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
864 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
865 temp_bound = PySet_New(bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
866 if (!temp_bound)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
867 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
868 temp_free = PySet_New(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
869 if (!temp_free)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
870 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
871 temp_global = PySet_New(global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
872 if (!temp_global)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
873 goto error;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
874
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
875 if (!analyze_block(entry, temp_bound, temp_free, temp_global))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
876 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
877 temp = PyNumber_InPlaceOr(child_free, temp_free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
878 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
879 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
880 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
881 Py_DECREF(temp_bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
882 Py_DECREF(temp_free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
883 Py_DECREF(temp_global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
884 return 1;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
885 error:
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
886 Py_XDECREF(temp_bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
887 Py_XDECREF(temp_free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
888 Py_XDECREF(temp_global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
889 return 0;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
890 }
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
891
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
892 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
893 symtable_analyze(struct symtable *st)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
894 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
895 PyObject *free, *global;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
896 int r;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
897
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
898 free = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
899 if (!free)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
900 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
901 global = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
902 if (!global) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
903 Py_DECREF(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
904 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
905 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
906 r = analyze_block(st->st_top, NULL, free, global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
907 Py_DECREF(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
908 Py_DECREF(global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
909 return r;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
910 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
911
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
912
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
913 static int
36089
4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations.
Neal Norwitz <nnorwitz@gmail.com>
parents: 35939
diff changeset
914 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
915 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
916 if (PyErr_WarnExplicit(PyExc_SyntaxWarning, msg, st->st_filename,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
917 lineno, NULL, NULL) < 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
918 if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
919 PyErr_SetString(PyExc_SyntaxError, msg);
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
920 PyErr_SyntaxLocationEx(st->st_filename, st->st_cur->ste_lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
921 st->st_cur->ste_col_offset);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
922 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
923 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
924 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
925 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
926 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
927
48725
40c07a61e1c2 Merged revisions 65715,65724,65726,65732,65736-65739,65775 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 48660
diff changeset
928 /* symtable_enter_block() gets a reference via ste_new.
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
929 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
930 in symtable_exit_block().
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
931 */
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
932
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
933 static int
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
934 symtable_exit_block(struct symtable *st, void *ast)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
935 {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
936 Py_ssize_t size;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
937
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
938 st->st_cur = NULL;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
939 size = PyList_GET_SIZE(st->st_stack);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
940 if (size) {
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
941 if (PyList_SetSlice(st->st_stack, size - 1, size, NULL) < 0)
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
942 return 0;
71129
6b3872a11299 fix possibily uninitialized memory usage (closes #12474)
Benjamin Peterson <benjamin@python.org>
parents: 71087
diff changeset
943 if (--size)
6b3872a11299 fix possibily uninitialized memory usage (closes #12474)
Benjamin Peterson <benjamin@python.org>
parents: 71087
diff changeset
944 st->st_cur = (PySTEntryObject *)PyList_GET_ITEM(st->st_stack, size - 1);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
945 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
946 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
947 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
948
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
949 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
950 symtable_enter_block(struct symtable *st, identifier name, _Py_block_ty block,
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
951 void *ast, int lineno, int col_offset)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
952 {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
953 PySTEntryObject *prev = NULL, *ste;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
954
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
955 ste = ste_new(st, name, block, ast, lineno, col_offset);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
956 if (ste == NULL)
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
957 return 0;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
958 if (PyList_Append(st->st_stack, (PyObject *)ste) < 0) {
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
959 Py_DECREF(ste);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
960 return 0;
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
961 }
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
962 prev = st->st_cur;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
963 /* The entry is owned by the stack. Borrow it for st_cur. */
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
964 Py_DECREF(ste);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
965 st->st_cur = ste;
65393
3618d9d7902d Merged revisions 85562 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 61467
diff changeset
966 if (block == ModuleBlock)
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
967 st->st_global = st->st_cur->ste_symbols;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
968 if (prev) {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
969 if (PyList_Append(prev->ste_children, (PyObject *)ste) < 0) {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
970 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
971 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
972 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
973 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
974 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
975
36231
d3f4c467e439 Fix icc warnings: conversion from "long" to "int" may lose significant bits
Neal Norwitz <nnorwitz@gmail.com>
parents: 36226
diff changeset
976 static long
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
977 symtable_lookup(struct symtable *st, PyObject *name)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
978 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
979 PyObject *o;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
980 PyObject *mangled = _Py_Mangle(st->st_private, name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
981 if (!mangled)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
982 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
983 o = PyDict_GetItem(st->st_cur->ste_symbols, mangled);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
984 Py_DECREF(mangled);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
985 if (!o)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
986 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
987 return PyLong_AsLong(o);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
988 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
989
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
990 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
991 symtable_add_def(struct symtable *st, PyObject *name, int flag)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
992 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
993 PyObject *o;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
994 PyObject *dict;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
995 long val;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
996 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
997
40965
30e5cb3a55ac Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 40898
diff changeset
998
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
999 if (!mangled)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1000 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1001 dict = st->st_cur->ste_symbols;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1002 if ((o = PyDict_GetItem(dict, mangled))) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1003 val = PyLong_AS_LONG(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1004 if ((flag & DEF_PARAM) && (val & DEF_PARAM)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1005 /* Is it better to use 'mangled' or 'name' here? */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1006 PyErr_Format(PyExc_SyntaxError, DUPLICATE_ARGUMENT, name);
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1007 PyErr_SyntaxLocationEx(st->st_filename,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1008 st->st_cur->ste_lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1009 st->st_cur->ste_col_offset);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1010 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1011 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1012 val |= flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1013 } else
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1014 val = flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1015 o = PyLong_FromLong(val);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1016 if (o == NULL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1017 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1018 if (PyDict_SetItem(dict, mangled, o) < 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1019 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1020 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1021 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1022 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1023
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1024 if (flag & DEF_PARAM) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1025 if (PyList_Append(st->st_cur->ste_varnames, mangled) < 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1026 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1027 } else if (flag & DEF_GLOBAL) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1028 /* XXX need to update DEF_GLOBAL for other flags too;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1029 perhaps only DEF_FREE_GLOBAL */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1030 val = flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1031 if ((o = PyDict_GetItem(st->st_global, mangled))) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1032 val |= PyLong_AS_LONG(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1033 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1034 o = PyLong_FromLong(val);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1035 if (o == NULL)
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1036 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1037 if (PyDict_SetItem(st->st_global, mangled, o) < 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1038 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1039 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1040 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1041 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1042 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1043 Py_DECREF(mangled);
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1044 return 1;
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1045
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1046 error:
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1047 Py_DECREF(mangled);
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1048 return 0;
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1049 }
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1050
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1051 /* VISIT, VISIT_SEQ and VIST_SEQ_TAIL take an ASDL type as their second argument.
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1052 They use the ASDL name to synthesize the name of the C type and the visit
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1053 function.
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1054
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1055 VISIT_SEQ_TAIL permits the start of an ASDL sequence to be skipped, which is
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1056 useful if the first node in the sequence requires special treatment.
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1057
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1058 VISIT_QUIT macro returns the specified value exiting from the function but
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1059 first adjusts current recursion counter depth.
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1060 */
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1061
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1062 #define VISIT_QUIT(ST, X) \
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1063 return --(ST)->recursion_depth,(X)
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1064
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1065 #define VISIT(ST, TYPE, V) \
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1066 if (!symtable_visit_ ## TYPE((ST), (V))) \
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1067 VISIT_QUIT((ST), 0);
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1068
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1069 #define VISIT_SEQ(ST, TYPE, SEQ) { \
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1070 int i; \
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1071 asdl_seq *seq = (SEQ); /* avoid variable capture */ \
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1072 for (i = 0; i < asdl_seq_LEN(seq); i++) { \
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1073 TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, i); \
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1074 if (!symtable_visit_ ## TYPE((ST), elt)) \
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1075 VISIT_QUIT((ST), 0); \
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1076 } \
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1077 }
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1078
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1079 #define VISIT_SEQ_TAIL(ST, TYPE, SEQ, START) { \
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1080 int i; \
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1081 asdl_seq *seq = (SEQ); /* avoid variable capture */ \
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1082 for (i = (START); i < asdl_seq_LEN(seq); i++) { \
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1083 TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, i); \
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1084 if (!symtable_visit_ ## TYPE((ST), elt)) \
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1085 VISIT_QUIT((ST), 0); \
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1086 } \
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1087 }
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1088
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1089 #define VISIT_KWONLYDEFAULTS(ST, KW_DEFAULTS) { \
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1090 int i = 0; \
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1091 asdl_seq *seq = (KW_DEFAULTS); /* avoid variable capture */ \
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1092 for (i = 0; i < asdl_seq_LEN(seq); i++) { \
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1093 expr_ty elt = (expr_ty)asdl_seq_GET(seq, i); \
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1094 if (!elt) continue; /* can be NULL */ \
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1095 if (!symtable_visit_expr((ST), elt)) \
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1096 VISIT_QUIT((ST), 0); \
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1097 } \
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1098 }
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1099
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1100 static int
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1101 symtable_new_tmpname(struct symtable *st)
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1102 {
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1103 char tmpname[256];
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1104 identifier tmp;
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1105
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1106 PyOS_snprintf(tmpname, sizeof(tmpname), "_[%d]",
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1107 ++st->st_cur->ste_tmpname);
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1108 tmp = PyUnicode_InternFromString(tmpname);
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1109 if (!tmp)
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1110 return 0;
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1111 if (!symtable_add_def(st, tmp, DEF_LOCAL))
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1112 return 0;
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1113 Py_DECREF(tmp);
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1114 return 1;
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1115 }
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1116
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1117
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1118 static int
80147
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1119 symtable_record_directive(struct symtable *st, identifier name, stmt_ty s)
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1120 {
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1121 PyObject *data;
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1122 int res;
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1123 if (!st->st_cur->ste_directives) {
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1124 st->st_cur->ste_directives = PyList_New(0);
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1125 if (!st->st_cur->ste_directives)
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1126 return 0;
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1127 }
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1128 data = Py_BuildValue("(Oii)", name, s->lineno, s->col_offset);
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1129 if (!data)
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1130 return 0;
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1131 res = PyList_Append(st->st_cur->ste_directives, data);
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1132 Py_DECREF(data);
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1133 return res == 0;
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1134 }
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1135
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1136
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1137 static int
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1138 symtable_visit_stmt(struct symtable *st, stmt_ty s)
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1139 {
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1140 if (++st->recursion_depth > st->recursion_limit) {
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1141 PyErr_SetString(PyExc_RuntimeError,
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1142 "maximum recursion depth exceeded during compilation");
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1143 VISIT_QUIT(st, 0);
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1144 }
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1145 switch (s->kind) {
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1146 case FunctionDef_kind:
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1147 if (!symtable_add_def(st, s->v.FunctionDef.name, DEF_LOCAL))
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1148 VISIT_QUIT(st, 0);
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1149 if (s->v.FunctionDef.args->defaults)
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1150 VISIT_SEQ(st, expr, s->v.FunctionDef.args->defaults);
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1151 if (s->v.FunctionDef.args->kw_defaults)
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1152 VISIT_KWONLYDEFAULTS(st,
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1153 s->v.FunctionDef.args->kw_defaults);
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1154 if (!symtable_visit_annotations(st, s))
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1155 VISIT_QUIT(st, 0);
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1156 if (s->v.FunctionDef.decorator_list)
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1157 VISIT_SEQ(st, expr, s->v.FunctionDef.decorator_list);
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1158 if (!symtable_enter_block(st, s->v.FunctionDef.name,
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1159 FunctionBlock, (void *)s, s->lineno,
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1160 s->col_offset))
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1161 VISIT_QUIT(st, 0);
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1162 VISIT(st, arguments, s->v.FunctionDef.args);
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1163 VISIT_SEQ(st, stmt, s->v.FunctionDef.body);
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1164 if (!symtable_exit_block(st, s))
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1165 VISIT_QUIT(st, 0);
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1166 break;
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1167 case ClassDef_kind: {
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1168 PyObject *tmp;
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diff changeset
1169 if (!symtable_add_def(st, s->v.ClassDef.name, DEF_LOCAL))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1170 VISIT_QUIT(st, 0);
61467
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diff changeset
1171 VISIT_SEQ(st, expr, s->v.ClassDef.bases);
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diff changeset
1172 VISIT_SEQ(st, keyword, s->v.ClassDef.keywords);
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diff changeset
1173 if (s->v.ClassDef.starargs)
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diff changeset
1174 VISIT(st, expr, s->v.ClassDef.starargs);
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diff changeset
1175 if (s->v.ClassDef.kwargs)
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diff changeset
1176 VISIT(st, expr, s->v.ClassDef.kwargs);
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diff changeset
1177 if (s->v.ClassDef.decorator_list)
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diff changeset
1178 VISIT_SEQ(st, expr, s->v.ClassDef.decorator_list);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1179 if (!symtable_enter_block(st, s->v.ClassDef.name, ClassBlock,
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1180 (void *)s, s->lineno, s->col_offset))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1181 VISIT_QUIT(st, 0);
61467
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diff changeset
1182 if (!GET_IDENTIFIER(__class__) ||
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diff changeset
1183 !symtable_add_def(st, __class__, DEF_LOCAL) ||
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diff changeset
1184 !GET_IDENTIFIER(__locals__) ||
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diff changeset
1185 !symtable_add_def(st, __locals__, DEF_PARAM)) {
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parents: 57378
diff changeset
1186 symtable_exit_block(st, s);
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1187 VISIT_QUIT(st, 0);
61467
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diff changeset
1188 }
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diff changeset
1189 tmp = st->st_private;
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diff changeset
1190 st->st_private = s->v.ClassDef.name;
71082
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1191 VISIT_SEQ(st, stmt, s->v.ClassDef.body);
61467
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diff changeset
1192 st->st_private = tmp;
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diff changeset
1193 if (!symtable_exit_block(st, s))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1194 VISIT_QUIT(st, 0);
61467
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diff changeset
1195 break;
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diff changeset
1196 }
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diff changeset
1197 case Return_kind:
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diff changeset
1198 if (s->v.Return.value) {
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diff changeset
1199 VISIT(st, expr, s->v.Return.value);
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diff changeset
1200 st->st_cur->ste_returns_value = 1;
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diff changeset
1201 }
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diff changeset
1202 break;
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parents: 57378
diff changeset
1203 case Delete_kind:
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diff changeset
1204 VISIT_SEQ(st, expr, s->v.Delete.targets);
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diff changeset
1205 break;
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diff changeset
1206 case Assign_kind:
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diff changeset
1207 VISIT_SEQ(st, expr, s->v.Assign.targets);
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parents: 57378
diff changeset
1208 VISIT(st, expr, s->v.Assign.value);
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diff changeset
1209 break;
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diff changeset
1210 case AugAssign_kind:
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parents: 57378
diff changeset
1211 VISIT(st, expr, s->v.AugAssign.target);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1212 VISIT(st, expr, s->v.AugAssign.value);
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diff changeset
1213 break;
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parents: 57378
diff changeset
1214 case For_kind:
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diff changeset
1215 VISIT(st, expr, s->v.For.target);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1216 VISIT(st, expr, s->v.For.iter);
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parents: 57378
diff changeset
1217 VISIT_SEQ(st, stmt, s->v.For.body);
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parents: 57378
diff changeset
1218 if (s->v.For.orelse)
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diff changeset
1219 VISIT_SEQ(st, stmt, s->v.For.orelse);
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diff changeset
1220 break;
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diff changeset
1221 case While_kind:
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diff changeset
1222 VISIT(st, expr, s->v.While.test);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1223 VISIT_SEQ(st, stmt, s->v.While.body);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1224 if (s->v.While.orelse)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1225 VISIT_SEQ(st, stmt, s->v.While.orelse);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1226 break;
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diff changeset
1227 case If_kind:
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diff changeset
1228 /* XXX if 0: and lookup_yield() hacks */
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parents: 57378
diff changeset
1229 VISIT(st, expr, s->v.If.test);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1230 VISIT_SEQ(st, stmt, s->v.If.body);
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parents: 57378
diff changeset
1231 if (s->v.If.orelse)
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parents: 57378
diff changeset
1232 VISIT_SEQ(st, stmt, s->v.If.orelse);
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diff changeset
1233 break;
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diff changeset
1234 case Raise_kind:
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1235 if (s->v.Raise.exc) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1236 VISIT(st, expr, s->v.Raise.exc);
69231
b6fe63c914e4 Issue #9904: fix and clarify some comments + fix indentation in symtable code
Eli Bendersky <eliben@gmail.com>
parents: 68257
diff changeset
1237 if (s->v.Raise.cause) {
b6fe63c914e4 Issue #9904: fix and clarify some comments + fix indentation in symtable code
Eli Bendersky <eliben@gmail.com>
parents: 68257
diff changeset
1238 VISIT(st, expr, s->v.Raise.cause);
b6fe63c914e4 Issue #9904: fix and clarify some comments + fix indentation in symtable code
Eli Bendersky <eliben@gmail.com>
parents: 68257
diff changeset
1239 }
61467
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diff changeset
1240 }
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1241 break;
70499
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1242 case Try_kind:
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1243 VISIT_SEQ(st, stmt, s->v.Try.body);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1244 VISIT_SEQ(st, stmt, s->v.Try.orelse);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1245 VISIT_SEQ(st, excepthandler, s->v.Try.handlers);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1246 VISIT_SEQ(st, stmt, s->v.Try.finalbody);
61467
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diff changeset
1247 break;
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parents: 57378
diff changeset
1248 case Assert_kind:
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parents: 57378
diff changeset
1249 VISIT(st, expr, s->v.Assert.test);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1250 if (s->v.Assert.msg)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1251 VISIT(st, expr, s->v.Assert.msg);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1252 break;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1253 case Import_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1254 VISIT_SEQ(st, alias, s->v.Import.names);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1255 /* XXX Don't have the lineno available inside
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1256 visit_alias */
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1257 if (st->st_cur->ste_unoptimized && !st->st_cur->ste_opt_lineno) {
61467
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parents: 57378
diff changeset
1258 st->st_cur->ste_opt_lineno = s->lineno;
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1259 st->st_cur->ste_opt_col_offset = s->col_offset;
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1260 }
61467
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diff changeset
1261 break;
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diff changeset
1262 case ImportFrom_kind:
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diff changeset
1263 VISIT_SEQ(st, alias, s->v.ImportFrom.names);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1264 /* XXX Don't have the lineno available inside
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diff changeset
1265 visit_alias */
64861
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Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1266 if (st->st_cur->ste_unoptimized && !st->st_cur->ste_opt_lineno) {
61467
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parents: 57378
diff changeset
1267 st->st_cur->ste_opt_lineno = s->lineno;
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1268 st->st_cur->ste_opt_col_offset = s->col_offset;
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1269 }
61467
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diff changeset
1270 break;
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parents: 57378
diff changeset
1271 case Global_kind: {
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diff changeset
1272 int i;
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diff changeset
1273 asdl_seq *seq = s->v.Global.names;
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parents: 57378
diff changeset
1274 for (i = 0; i < asdl_seq_LEN(seq); i++) {
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parents: 57378
diff changeset
1275 identifier name = (identifier)asdl_seq_GET(seq, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1276 long cur = symtable_lookup(st, name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1277 if (cur < 0)
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1278 VISIT_QUIT(st, 0);
61467
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diff changeset
1279 if (cur & (DEF_LOCAL | USE)) {
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parents: 57378
diff changeset
1280 char buf[256];
80141
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1281 char *c_name = _PyUnicode_AsString(name);
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1282 if (!c_name)
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1283 return 0;
61467
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diff changeset
1284 if (cur & DEF_LOCAL)
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diff changeset
1285 PyOS_snprintf(buf, sizeof(buf),
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diff changeset
1286 GLOBAL_AFTER_ASSIGN,
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diff changeset
1287 c_name);
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diff changeset
1288 else
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diff changeset
1289 PyOS_snprintf(buf, sizeof(buf),
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diff changeset
1290 GLOBAL_AFTER_USE,
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diff changeset
1291 c_name);
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diff changeset
1292 if (!symtable_warn(st, buf, s->lineno))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1293 VISIT_QUIT(st, 0);
61467
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diff changeset
1294 }
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parents: 57378
diff changeset
1295 if (!symtable_add_def(st, name, DEF_GLOBAL))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1296 VISIT_QUIT(st, 0);
80147
fbfaef0a9c00 point errors related to nonlocals and globals to the statement declaring them (closes #10189)
Benjamin Peterson <benjamin@python.org>
parents: 80141
diff changeset
1297 if (!symtable_record_directive(st, name, s))
80240
bd1db93d76e1 Issue #5765: Merge from 3.3
Nick Coghlan <ncoghlan@gmail.com>
parents: 80147 80239
diff changeset
1298 VISIT_QUIT(st, 0);
61467
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diff changeset
1299 }
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diff changeset
1300 break;
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parents: 57378
diff changeset
1301 }
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parents: 57378
diff changeset
1302 case Nonlocal_kind: {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1303 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1304 asdl_seq *seq = s->v.Nonlocal.names;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1305 for (i = 0; i < asdl_seq_LEN(seq); i++) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1306 identifier name = (identifier)asdl_seq_GET(seq, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1307 long cur = symtable_lookup(st, name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1308 if (cur < 0)
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1309 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1310 if (cur & (DEF_LOCAL | USE)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1311 char buf[256];
80141
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1312 char *c_name = _PyUnicode_AsString(name);
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1313 if (!c_name)
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1314 return 0;
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1315 if (cur & DEF_LOCAL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1316 PyOS_snprintf(buf, sizeof(buf),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1317 NONLOCAL_AFTER_ASSIGN,
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parents: 57378
diff changeset
1318 c_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1319 else
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1320 PyOS_snprintf(buf, sizeof(buf),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1321 NONLOCAL_AFTER_USE,
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parents: 57378
diff changeset
1322 c_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1323 if (!symtable_warn(st, buf, s->lineno))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1324 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1325 }
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1326 if (!symtable_add_def(st, name, DEF_NONLOCAL))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1327 VISIT_QUIT(st, 0);
80147
fbfaef0a9c00 point errors related to nonlocals and globals to the statement declaring them (closes #10189)
Benjamin Peterson <benjamin@python.org>
parents: 80141
diff changeset
1328 if (!symtable_record_directive(st, name, s))
80240
bd1db93d76e1 Issue #5765: Merge from 3.3
Nick Coghlan <ncoghlan@gmail.com>
parents: 80147 80239
diff changeset
1329 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1330 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1331 break;
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parents: 57378
diff changeset
1332 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1333 case Expr_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1334 VISIT(st, expr, s->v.Expr.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1335 break;
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parents: 57378
diff changeset
1336 case Pass_kind:
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diff changeset
1337 case Break_kind:
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parents: 57378
diff changeset
1338 case Continue_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1339 /* nothing to do here */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1340 break;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1341 case With_kind:
70438
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1342 VISIT_SEQ(st, withitem, s->v.With.items);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1343 VISIT_SEQ(st, stmt, s->v.With.body);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1344 break;
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diff changeset
1345 }
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1346 VISIT_QUIT(st, 1);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1347 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1348
61467
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1349 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1350 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
1351 {
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1352 if (++st->recursion_depth > st->recursion_limit) {
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1353 PyErr_SetString(PyExc_RuntimeError,
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1354 "maximum recursion depth exceeded during compilation");
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1355 VISIT_QUIT(st, 0);
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1356 }
61467
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diff changeset
1357 switch (e->kind) {
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parents: 57378
diff changeset
1358 case BoolOp_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1359 VISIT_SEQ(st, expr, e->v.BoolOp.values);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1360 break;
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diff changeset
1361 case BinOp_kind:
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parents: 57378
diff changeset
1362 VISIT(st, expr, e->v.BinOp.left);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1363 VISIT(st, expr, e->v.BinOp.right);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1364 break;
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parents: 57378
diff changeset
1365 case UnaryOp_kind:
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parents: 57378
diff changeset
1366 VISIT(st, expr, e->v.UnaryOp.operand);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1367 break;
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diff changeset
1368 case Lambda_kind: {
61466
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diff changeset
1369 if (!GET_IDENTIFIER(lambda))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1370 VISIT_QUIT(st, 0);
61467
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diff changeset
1371 if (e->v.Lambda.args->defaults)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1372 VISIT_SEQ(st, expr, e->v.Lambda.args->defaults);
73366
1e0e821d2626 Issue #13343: Fix a SystemError when a lambda expression uses a global
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 70919
diff changeset
1373 if (e->v.Lambda.args->kw_defaults)
1e0e821d2626 Issue #13343: Fix a SystemError when a lambda expression uses a global
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 70919
diff changeset
1374 VISIT_KWONLYDEFAULTS(st,
1e0e821d2626 Issue #13343: Fix a SystemError when a lambda expression uses a global
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 70919
diff changeset
1375 e->v.Lambda.args->kw_defaults);
61467
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diff changeset
1376 if (!symtable_enter_block(st, lambda,
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1377 FunctionBlock, (void *)e, e->lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1378 e->col_offset))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1379 VISIT_QUIT(st, 0);
71082
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1380 VISIT(st, arguments, e->v.Lambda.args);
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1381 VISIT(st, expr, e->v.Lambda.body);
61467
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diff changeset
1382 if (!symtable_exit_block(st, (void *)e))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1383 VISIT_QUIT(st, 0);
61467
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diff changeset
1384 break;
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diff changeset
1385 }
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diff changeset
1386 case IfExp_kind:
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diff changeset
1387 VISIT(st, expr, e->v.IfExp.test);
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diff changeset
1388 VISIT(st, expr, e->v.IfExp.body);
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diff changeset
1389 VISIT(st, expr, e->v.IfExp.orelse);
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diff changeset
1390 break;
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diff changeset
1391 case Dict_kind:
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diff changeset
1392 VISIT_SEQ(st, expr, e->v.Dict.keys);
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diff changeset
1393 VISIT_SEQ(st, expr, e->v.Dict.values);
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diff changeset
1394 break;
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diff changeset
1395 case Set_kind:
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diff changeset
1396 VISIT_SEQ(st, expr, e->v.Set.elts);
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diff changeset
1397 break;
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diff changeset
1398 case GeneratorExp_kind:
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diff changeset
1399 if (!symtable_visit_genexp(st, e))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1400 VISIT_QUIT(st, 0);
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diff changeset
1401 break;
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diff changeset
1402 case ListComp_kind:
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diff changeset
1403 if (!symtable_visit_listcomp(st, e))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1404 VISIT_QUIT(st, 0);
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diff changeset
1405 break;
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diff changeset
1406 case SetComp_kind:
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diff changeset
1407 if (!symtable_visit_setcomp(st, e))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1408 VISIT_QUIT(st, 0);
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diff changeset
1409 break;
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diff changeset
1410 case DictComp_kind:
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diff changeset
1411 if (!symtable_visit_dictcomp(st, e))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1412 VISIT_QUIT(st, 0);
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diff changeset
1413 break;
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diff changeset
1414 case Yield_kind:
80589
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1415 if (e->v.Yield.value)
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1416 VISIT(st, expr, e->v.Yield.value);
61467
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diff changeset
1417 st->st_cur->ste_generator = 1;
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diff changeset
1418 break;
80589
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1419 case YieldFrom_kind:
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1420 VISIT(st, expr, e->v.YieldFrom.value);
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1421 st->st_cur->ste_generator = 1;
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1422 break;
61467
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1423 case Compare_kind:
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parents: 57378
diff changeset
1424 VISIT(st, expr, e->v.Compare.left);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1425 VISIT_SEQ(st, expr, e->v.Compare.comparators);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1426 break;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1427 case Call_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1428 VISIT(st, expr, e->v.Call.func);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1429 VISIT_SEQ(st, expr, e->v.Call.args);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1430 VISIT_SEQ(st, keyword, e->v.Call.keywords);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1431 if (e->v.Call.starargs)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1432 VISIT(st, expr, e->v.Call.starargs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1433 if (e->v.Call.kwargs)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1434 VISIT(st, expr, e->v.Call.kwargs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1435 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1436 case Num_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1437 case Str_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1438 case Bytes_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1439 case Ellipsis_kind:
80738
03f92a9f0875 create NameConstant AST class for None, True, and False literals (closes #16619)
Benjamin Peterson <benjamin@python.org>
parents: 80590
diff changeset
1440 case NameConstant_kind:
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1441 /* Nothing to do here. */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1442 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1443 /* The following exprs can be assignment targets. */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1444 case Attribute_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1445 VISIT(st, expr, e->v.Attribute.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1446 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1447 case Subscript_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1448 VISIT(st, expr, e->v.Subscript.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1449 VISIT(st, slice, e->v.Subscript.slice);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1450 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1451 case Starred_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1452 VISIT(st, expr, e->v.Starred.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1453 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1454 case Name_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1455 if (!symtable_add_def(st, e->v.Name.id,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1456 e->v.Name.ctx == Load ? USE : DEF_LOCAL))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1457 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1458 /* Special-case super: it counts as a use of __class__ */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1459 if (e->v.Name.ctx == Load &&
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1460 st->st_cur->ste_type == FunctionBlock &&
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1461 !PyUnicode_CompareWithASCIIString(e->v.Name.id, "super")) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1462 if (!GET_IDENTIFIER(__class__) ||
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1463 !symtable_add_def(st, __class__, USE))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1464 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1465 }
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parents: 57378
diff changeset
1466 break;
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1467 /* child nodes of List and Tuple will have expr_context set */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1468 case List_kind:
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parents: 57378
diff changeset
1469 VISIT_SEQ(st, expr, e->v.List.elts);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1470 break;
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parents: 57378
diff changeset
1471 case Tuple_kind:
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parents: 57378
diff changeset
1472 VISIT_SEQ(st, expr, e->v.Tuple.elts);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1473 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1474 }
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1475 VISIT_QUIT(st, 1);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1476 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1477
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1478 static int
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1479 symtable_implicit_arg(struct symtable *st, int pos)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1480 {
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1481 PyObject *id = PyUnicode_FromFormat(".%d", pos);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1482 if (id == NULL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1483 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1484 if (!symtable_add_def(st, id, DEF_PARAM)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1485 Py_DECREF(id);
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parents: 57378
diff changeset
1486 return 0;
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parents: 57378
diff changeset
1487 }
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parents: 57378
diff changeset
1488 Py_DECREF(id);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1489 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1490 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1491
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1492 static int
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1493 symtable_visit_params(struct symtable *st, asdl_seq *args)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1494 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1495 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1496
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1497 if (!args)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1498 return -1;
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1499
61467
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1500 for (i = 0; i < asdl_seq_LEN(args); i++) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1501 arg_ty arg = (arg_ty)asdl_seq_GET(args, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1502 if (!symtable_add_def(st, arg->arg, DEF_PARAM))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1503 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1504 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1505
61467
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diff changeset
1506 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1507 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1508
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1509 static int
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1510 symtable_visit_argannotations(struct symtable *st, asdl_seq *args)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1511 {
61467
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parents: 57378
diff changeset
1512 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1513
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1514 if (!args)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1515 return -1;
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1516
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1517 for (i = 0; i < asdl_seq_LEN(args); i++) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1518 arg_ty arg = (arg_ty)asdl_seq_GET(args, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1519 if (arg->annotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1520 VISIT(st, expr, arg->annotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1521 }
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1522
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1523 return 1;
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1524 }
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1525
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1526 static int
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1527 symtable_visit_annotations(struct symtable *st, stmt_ty s)
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1528 {
61467
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diff changeset
1529 arguments_ty a = s->v.FunctionDef.args;
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parents: 57378
diff changeset
1530
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1531 if (a->args && !symtable_visit_argannotations(st, a->args))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1532 return 0;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1533 if (a->varargannotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1534 VISIT(st, expr, a->varargannotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1535 if (a->kwargannotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1536 VISIT(st, expr, a->kwargannotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1537 if (a->kwonlyargs && !symtable_visit_argannotations(st, a->kwonlyargs))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1538 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1539 if (s->v.FunctionDef.returns)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1540 VISIT(st, expr, s->v.FunctionDef.returns);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1541 return 1;
35742
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parents: 32121
diff changeset
1542 }
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1543
61467
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diff changeset
1544 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1545 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
1546 {
61467
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parents: 57378
diff changeset
1547 /* skip default arguments inside function block
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1548 XXX should ast be different?
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1549 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1550 if (a->args && !symtable_visit_params(st, a->args))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1551 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1552 if (a->kwonlyargs && !symtable_visit_params(st, a->kwonlyargs))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1553 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1554 if (a->vararg) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1555 if (!symtable_add_def(st, a->vararg, DEF_PARAM))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1556 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1557 st->st_cur->ste_varargs = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1558 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1559 if (a->kwarg) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1560 if (!symtable_add_def(st, a->kwarg, DEF_PARAM))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1561 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1562 st->st_cur->ste_varkeywords = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1563 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1564 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1565 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1566
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1567
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1568 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1569 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
1570 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1571 if (eh->v.ExceptHandler.type)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1572 VISIT(st, expr, eh->v.ExceptHandler.type);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1573 if (eh->v.ExceptHandler.name)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1574 if (!symtable_add_def(st, eh->v.ExceptHandler.name, DEF_LOCAL))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1575 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1576 VISIT_SEQ(st, stmt, eh->v.ExceptHandler.body);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1577 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1578 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1579
70438
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1580 static int
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1581 symtable_visit_withitem(struct symtable *st, withitem_ty item)
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1582 {
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1583 VISIT(st, expr, item->context_expr);
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1584 if (item->optional_vars) {
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1585 VISIT(st, expr, item->optional_vars);
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1586 }
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1587 return 1;
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1588 }
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1589
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1590
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1591 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1592 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
1593 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1594 /* Compute store_name, the name actually bound by the import
62260
44dc98502ac3 Merged revisions 81906 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 61466
diff changeset
1595 operation. It is different than a->name when a->name is a
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1596 dotted package name (e.g. spam.eggs)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1597 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1598 PyObject *store_name;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1599 PyObject *name = (a->asname == NULL) ? a->name : a->asname;
72475
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1600 Py_ssize_t dot = PyUnicode_FindChar(name, '.', 0,
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1601 PyUnicode_GET_LENGTH(name), 1);
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1602 if (dot != -1) {
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1603 store_name = PyUnicode_Substring(name, 0, dot);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1604 if (!store_name)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1605 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1606 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1607 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1608 store_name = name;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1609 Py_INCREF(store_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1610 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1611 if (PyUnicode_CompareWithASCIIString(name, "*")) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1612 int r = symtable_add_def(st, store_name, DEF_IMPORT);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1613 Py_DECREF(store_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1614 return r;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1615 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1616 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1617 if (st->st_cur->ste_type != ModuleBlock) {
70919
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1618 int lineno = st->st_cur->ste_lineno;
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1619 int col_offset = st->st_cur->ste_col_offset;
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1620 PyErr_SetString(PyExc_SyntaxError, IMPORT_STAR_WARNING);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1621 PyErr_SyntaxLocationEx(st->st_filename, lineno, col_offset);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1622 Py_DECREF(store_name);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1623 return 0;
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1624 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1625 st->st_cur->ste_unoptimized |= OPT_IMPORT_STAR;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1626 Py_DECREF(store_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1627 return 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1628 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1629 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1630
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1631
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1632 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1633 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
1634 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1635 VISIT(st, expr, lc->target);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1636 VISIT(st, expr, lc->iter);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1637 VISIT_SEQ(st, expr, lc->ifs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1638 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1639 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1640
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1641
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1642 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1643 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
1644 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1645 VISIT(st, expr, k->value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1646 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1647 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1648
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1649
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1650 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1651 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
1652 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1653 switch (s->kind) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1654 case Slice_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1655 if (s->v.Slice.lower)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1656 VISIT(st, expr, s->v.Slice.lower)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1657 if (s->v.Slice.upper)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1658 VISIT(st, expr, s->v.Slice.upper)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1659 if (s->v.Slice.step)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1660 VISIT(st, expr, s->v.Slice.step)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1661 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1662 case ExtSlice_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1663 VISIT_SEQ(st, slice, s->v.ExtSlice.dims)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1664 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1665 case Index_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1666 VISIT(st, expr, s->v.Index.value)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1667 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1668 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1669 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1670 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1671
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1672 static int
41464
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
1673 symtable_handle_comprehension(struct symtable *st, expr_ty e,
42193
090588a17490 Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42084
diff changeset
1674 identifier scope_name, asdl_seq *generators,
090588a17490 Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42084
diff changeset
1675 expr_ty elt, expr_ty value)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1676 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1677 int is_generator = (e->kind == GeneratorExp_kind);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1678 int needs_tmp = !is_generator;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1679 comprehension_ty outermost = ((comprehension_ty)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1680 asdl_seq_GET(generators, 0));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1681 /* Outermost iterator is evaluated in current scope */
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1682 VISIT(st, expr, outermost->iter);
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1683 /* Create comprehension scope for the rest */
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1684 if (!scope_name ||
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1685 !symtable_enter_block(st, scope_name, FunctionBlock, (void *)e,
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1686 e->lineno, e->col_offset)) {
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1687 return 0;
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1688 }
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1689 st->st_cur->ste_generator = is_generator;
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1690 /* Outermost iter is received as an argument */
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1691 if (!symtable_implicit_arg(st, 0)) {
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1692 symtable_exit_block(st, (void *)e);
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1693 return 0;
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1694 }
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1695 /* Allocate temporary name if needed */
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1696 if (needs_tmp && !symtable_new_tmpname(st)) {
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1697 symtable_exit_block(st, (void *)e);
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1698 return 0;
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1699 }
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1700 VISIT(st, expr, outermost->target);
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1701 VISIT_SEQ(st, expr, outermost->ifs);
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1702 VISIT_SEQ_TAIL(st, comprehension, generators, 1);
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1703 if (value)
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1704 VISIT(st, expr, value);
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1705 VISIT(st, expr, elt);
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1706 return symtable_exit_block(st, (void *)e);
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1707 }
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1708
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1709 static int
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1710 symtable_visit_genexp(struct symtable *st, expr_ty e)
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1711 {
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1712 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(genexpr),
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1713 e->v.GeneratorExp.generators,
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1714 e->v.GeneratorExp.elt, NULL);
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1715 }
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1716
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1717 static int
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1718 symtable_visit_listcomp(struct symtable *st, expr_ty e)
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1719 {
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1720 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(listcomp),
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1721 e->v.ListComp.generators,
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1722 e->v.ListComp.elt, NULL);
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1723 }
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1724
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1725 static int
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1726 symtable_visit_setcomp(struct symtable *st, expr_ty e)
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1727 {
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1728 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(setcomp),
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1729 e->v.SetComp.generators,
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1730 e->v.SetComp.elt, NULL);
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1731 }
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1732
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1733 static int
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1734 symtable_visit_dictcomp(struct symtable *st, expr_ty e)
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1735 {
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1736 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(dictcomp),
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1737 e->v.DictComp.generators,
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1738 e->v.DictComp.key,
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1739 e->v.DictComp.value);
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1740 }