Mercurial > cpython-lru_cache-weakref

annotate Python/symtable.c @ 72497:f05c2df39ea8

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fill_number() and format_string_internal() check for PyUnicode_CopyCharacters() failure
author Victor Stinner <victor.stinner@haypocalc.com>
date Wed, 28 Sep 2011 21:53:49 +0200
parents 8beaa9a37387
children bddb455439d0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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22 #define RETURN_VAL_IN_GENERATOR \
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23 "'return' with argument inside generator"
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24
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25
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26 static PySTEntryObject *
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27 ste_new(struct symtable *st, identifier name, _Py_block_ty block,
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28 void *key, int lineno, int col_offset)
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29 {
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30 PySTEntryObject *ste = NULL;
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31 PyObject *k;
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32
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33 k = PyLong_FromVoidPtr(key);
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34 if (k == NULL)
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35 goto fail;
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36 ste = PyObject_New(PySTEntryObject, &PySTEntry_Type);
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37 if (ste == NULL)
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38 goto fail;
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39 ste->ste_table = st;
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40 ste->ste_id = k;
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41
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42 ste->ste_name = name;
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43 Py_INCREF(name);
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44
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45 ste->ste_symbols = NULL;
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46 ste->ste_varnames = NULL;
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47 ste->ste_children = NULL;
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48
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49 ste->ste_symbols = PyDict_New();
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50 if (ste->ste_symbols == NULL)
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51 goto fail;
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52
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53 ste->ste_varnames = PyList_New(0);
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54 if (ste->ste_varnames == NULL)
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55 goto fail;
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56
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57 ste->ste_children = PyList_New(0);
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58 if (ste->ste_children == NULL)
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59 goto fail;
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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 PyObject_Del(ste);
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108 }
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109
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110 #define OFF(x) offsetof(PySTEntryObject, x)
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111
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112 static PyMemberDef ste_memberlist[] = {
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113 {"id", T_OBJECT, OFF(ste_id), READONLY},
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114 {"name", T_OBJECT, OFF(ste_name), READONLY},
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115 {"symbols", T_OBJECT, OFF(ste_symbols), READONLY},
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116 {"varnames", T_OBJECT, OFF(ste_varnames), READONLY},
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117 {"children", T_OBJECT, OFF(ste_children), READONLY},
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118 {"optimized",T_INT, OFF(ste_unoptimized), READONLY},
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119 {"nested", T_INT, OFF(ste_nested), READONLY},
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120 {"type", T_INT, OFF(ste_type), READONLY},
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121 {"lineno", T_INT, OFF(ste_lineno), READONLY},
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122 {NULL}
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123 };
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124
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125 PyTypeObject PySTEntry_Type = {
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126 PyVarObject_HEAD_INIT(&PyType_Type, 0)
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127 "symtable entry",
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128 sizeof(PySTEntryObject),
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129 0,
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130 (destructor)ste_dealloc, /* tp_dealloc */
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131 0, /* tp_print */
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132 0, /* tp_getattr */
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133 0, /* tp_setattr */
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134 0, /* tp_reserved */
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135 (reprfunc)ste_repr, /* tp_repr */
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136 0, /* tp_as_number */
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137 0, /* tp_as_sequence */
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138 0, /* tp_as_mapping */
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139 0, /* tp_hash */
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140 0, /* tp_call */
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141 0, /* tp_str */
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142 PyObject_GenericGetAttr, /* tp_getattro */
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143 0, /* tp_setattro */
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144 0, /* tp_as_buffer */
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145 Py_TPFLAGS_DEFAULT, /* tp_flags */
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146 0, /* tp_doc */
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147 0, /* tp_traverse */
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148 0, /* tp_clear */
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149 0, /* tp_richcompare */
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150 0, /* tp_weaklistoffset */
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151 0, /* tp_iter */
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152 0, /* tp_iternext */
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153 0, /* tp_methods */
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154 ste_memberlist, /* tp_members */
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155 0, /* tp_getset */
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156 0, /* tp_base */
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157 0, /* tp_dict */
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158 0, /* tp_descr_get */
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159 0, /* tp_descr_set */
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160 0, /* tp_dictoffset */
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161 0, /* tp_init */
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162 0, /* tp_alloc */
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163 0, /* tp_new */
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164 };
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165
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166 static int symtable_analyze(struct symtable *st);
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167 static int symtable_warn(struct symtable *st, char *msg, int lineno);
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168 static int symtable_enter_block(struct symtable *st, identifier name,
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169 _Py_block_ty block, void *ast, int lineno,
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170 int col_offset);
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171 static int symtable_exit_block(struct symtable *st, void *ast);
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172 static int symtable_visit_stmt(struct symtable *st, stmt_ty s);
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173 static int symtable_visit_expr(struct symtable *st, expr_ty s);
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174 static int symtable_visit_genexp(struct symtable *st, expr_ty s);
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175 static int symtable_visit_listcomp(struct symtable *st, expr_ty s);
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176 static int symtable_visit_setcomp(struct symtable *st, expr_ty s);
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177 static int symtable_visit_dictcomp(struct symtable *st, expr_ty s);
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178 static int symtable_visit_arguments(struct symtable *st, arguments_ty);
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179 static int symtable_visit_excepthandler(struct symtable *st, excepthandler_ty);
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180 static int symtable_visit_alias(struct symtable *st, alias_ty);
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181 static int symtable_visit_comprehension(struct symtable *st, comprehension_ty);
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182 static int symtable_visit_keyword(struct symtable *st, keyword_ty);
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183 static int symtable_visit_slice(struct symtable *st, slice_ty);
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184 static int symtable_visit_params(struct symtable *st, asdl_seq *args);
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185 static int symtable_visit_argannotations(struct symtable *st, asdl_seq *args);
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186 static int symtable_implicit_arg(struct symtable *st, int pos);
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187 static int symtable_visit_annotations(struct symtable *st, stmt_ty s);
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188 static int symtable_visit_withitem(struct symtable *st, withitem_ty item);
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189
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190
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191 static identifier top = NULL, lambda = NULL, genexpr = NULL,
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192 listcomp = NULL, setcomp = NULL, dictcomp = NULL,
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193 __class__ = NULL, __locals__ = NULL;
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194
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195 #define GET_IDENTIFIER(VAR) \
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196 ((VAR) ? (VAR) : ((VAR) = PyUnicode_InternFromString(# VAR)))
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197
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198 #define DUPLICATE_ARGUMENT \
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199 "duplicate argument '%U' in function definition"
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200
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201 static struct symtable *
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202 symtable_new(void)
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203 {
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204 struct symtable *st;
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205
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206 st = (struct symtable *)PyMem_Malloc(sizeof(struct symtable));
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207 if (st == NULL)
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208 return NULL;
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209
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210 st->st_filename = NULL;
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211 st->st_blocks = NULL;
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212
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213 if ((st->st_stack = PyList_New(0)) == NULL)
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214 goto fail;
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215 if ((st->st_blocks = PyDict_New()) == NULL)
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216 goto fail;
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217 st->st_cur = NULL;
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218 st->st_private = NULL;
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219 return st;
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220 fail:
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221 PySymtable_Free(st);
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222 return NULL;
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223 }
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224
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225 struct symtable *
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226 PySymtable_Build(mod_ty mod, const char *filename, PyFutureFeatures *future)
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227 {
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228 struct symtable *st;
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229 asdl_seq *seq;
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230 int i;
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231
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232 if (__class__ == NULL) {
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233 __class__ = PyUnicode_InternFromString("@__class__");
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234 if (__class__ == NULL)
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235 return NULL;
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236 }
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237
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238 st = symtable_new();
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239 if (st == NULL)
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240 return st;
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241 st->st_filename = filename;
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242 st->st_future = future;
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243 /* Make the initial symbol information gathering pass */
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244 if (!GET_IDENTIFIER(top) ||
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245 !symtable_enter_block(st, top, ModuleBlock, (void *)mod, 0, 0)) {
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246 PySymtable_Free(st);
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247 return NULL;
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248 }
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249
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250 st->st_top = st->st_cur;
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251 st->st_cur->ste_unoptimized = OPT_TOPLEVEL;
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252 switch (mod->kind) {
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253 case Module_kind:
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254 seq = mod->v.Module.body;
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255 for (i = 0; i < asdl_seq_LEN(seq); i++)
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256 if (!symtable_visit_stmt(st,
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257 (stmt_ty)asdl_seq_GET(seq, i)))
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258 goto error;
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259 break;
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260 case Expression_kind:
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261 if (!symtable_visit_expr(st, mod->v.Expression.body))
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262 goto error;
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263 break;
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264 case Interactive_kind:
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265 seq = mod->v.Interactive.body;
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266 for (i = 0; i < asdl_seq_LEN(seq); i++)
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267 if (!symtable_visit_stmt(st,
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268 (stmt_ty)asdl_seq_GET(seq, i)))
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269 goto error;
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270 break;
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271 case Suite_kind:
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272 PyErr_SetString(PyExc_RuntimeError,
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273 "this compiler does not handle Suites");
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274 goto error;
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275 }
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276 if (!symtable_exit_block(st, (void *)mod)) {
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277 PySymtable_Free(st);
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278 return NULL;
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279 }
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280 /* Make the second symbol analysis pass */
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281 if (symtable_analyze(st))
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282 return st;
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283 PySymtable_Free(st);
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284 return NULL;
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285 error:
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286 (void) symtable_exit_block(st, (void *)mod);
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287 PySymtable_Free(st);
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288 return NULL;
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289 }
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290
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291 void
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292 PySymtable_Free(struct symtable *st)
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293 {
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294 Py_XDECREF(st->st_blocks);
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295 Py_XDECREF(st->st_stack);
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296 PyMem_Free((void *)st);
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297 }
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298
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299 PySTEntryObject *
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300 PySymtable_Lookup(struct symtable *st, void *key)
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301 {
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302 PyObject *k, *v;
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303
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304 k = PyLong_FromVoidPtr(key);
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305 if (k == NULL)
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306 return NULL;
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307 v = PyDict_GetItem(st->st_blocks, k);
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308 if (v) {
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309 assert(PySTEntry_Check(v));
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310 Py_INCREF(v);
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311 }
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312 else {
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313 PyErr_SetString(PyExc_KeyError,
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314 "unknown symbol table entry");
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315 }
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316
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317 Py_DECREF(k);
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318 return (PySTEntryObject *)v;
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319 }
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320
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321 int
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322 PyST_GetScope(PySTEntryObject *ste, PyObject *name)
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323 {
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324 PyObject *v = PyDict_GetItem(ste->ste_symbols, name);
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325 if (!v)
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326 return 0;
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327 assert(PyLong_Check(v));
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328 return (PyLong_AS_LONG(v) >> SCOPE_OFFSET) & SCOPE_MASK;
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329 }
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330
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331
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332 /* Analyze raw symbol information to determine scope of each name.
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333
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334 The next several functions are helpers for symtable_analyze(),
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335 which determines whether a name is local, global, or free. In addition,
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336 it determines which local variables are cell variables; they provide
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337 bindings that are used for free variables in enclosed blocks.
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338
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339 There are also two kinds of global variables, implicit and explicit. An
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340 explicit global is declared with the global statement. An implicit
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341 global is a free variable for which the compiler has found no binding
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342 in an enclosing function scope. The implicit global is either a global
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343 or a builtin. Python's module and class blocks use the xxx_NAME opcodes
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344 to handle these names to implement slightly odd semantics. In such a
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345 block, the name is treated as global until it is assigned to; then it
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346 is treated as a local.
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347
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348 The symbol table requires two passes to determine the scope of each name.
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349 The first pass collects raw facts from the AST via the symtable_visit_*
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350 functions: the name is a parameter here, the name is used but not defined
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351 here, etc. The second pass analyzes these facts during a pass over the
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352 PySTEntryObjects created during pass 1.
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353
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354 When a function is entered during the second pass, the parent passes
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355 the set of all name bindings visible to its children. These bindings
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356 are used to determine if non-local variables are free or implicit globals.
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357 Names which are explicitly declared nonlocal must exist in this set of
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358 visible names - if they do not, a syntax error is raised. After doing
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359 the local analysis, it analyzes each of its child blocks using an
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360 updated set of name bindings.
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361
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362 The children update the free variable set. If a local variable is added to
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363 the free variable set by the child, the variable is marked as a cell. The
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364 function object being defined must provide runtime storage for the variable
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365 that may outlive the function's frame. Cell variables are removed from the
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366 free set before the analyze function returns to its parent.
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367
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368 During analysis, the names are:
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369 symbols: dict mapping from symbol names to flag values (including offset scope values)
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370 scopes: dict mapping from symbol names to scope values (no offset)
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371 local: set of all symbol names local to the current scope
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372 bound: set of all symbol names local to a containing function scope
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373 free: set of all symbol names referenced but not bound in child scopes
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374 global: set of all symbol names explicitly declared as global
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375 */
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376
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377 #define SET_SCOPE(DICT, NAME, I) { \
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378 PyObject *o = PyLong_FromLong(I); \
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379 if (!o) \
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380 return 0; \
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381 if (PyDict_SetItem((DICT), (NAME), o) < 0) { \
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382 Py_DECREF(o); \
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383 return 0; \
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384 } \
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385 Py_DECREF(o); \
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386 }
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387
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388 /* Decide on scope of name, given flags.
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389
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390 The namespace dictionaries may be modified to record information
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391 about the new name. For example, a new global will add an entry to
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392 global. A name that was global can be changed to local.
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393 */
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394
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395 static int
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396 analyze_name(PySTEntryObject *ste, PyObject *scopes, PyObject *name, long flags,
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397 PyObject *bound, PyObject *local, PyObject *free,
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398 PyObject *global)
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399 {
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400 if (flags & DEF_GLOBAL) {
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401 if (flags & DEF_PARAM) {
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402 PyErr_Format(PyExc_SyntaxError,
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403 "name '%U' is parameter and global",
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404 name);
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405 PyErr_SyntaxLocationEx(ste->ste_table->st_filename,
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406 ste->ste_lineno, ste->ste_col_offset);
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407
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408 return 0;
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409 }
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410 if (flags & DEF_NONLOCAL) {
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411 PyErr_Format(PyExc_SyntaxError,
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412 "name '%U' is nonlocal and global",
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413 name);
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414 return 0;
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415 }
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416 SET_SCOPE(scopes, name, GLOBAL_EXPLICIT);
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417 if (PySet_Add(global, name) < 0)
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418 return 0;
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419 if (bound && (PySet_Discard(bound, name) < 0))
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420 return 0;
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421 return 1;
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422 }
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423 if (flags & DEF_NONLOCAL) {
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424 if (flags & DEF_PARAM) {
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425 PyErr_Format(PyExc_SyntaxError,
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426 "name '%U' is parameter and nonlocal",
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427 name);
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428 return 0;
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429 }
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430 if (!bound) {
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431 PyErr_Format(PyExc_SyntaxError,
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432 "nonlocal declaration not allowed at module level");
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433 return 0;
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434 }
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435 if (!PySet_Contains(bound, name)) {
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436 PyErr_Format(PyExc_SyntaxError,
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437 "no binding for nonlocal '%U' found",
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438 name);
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439
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440 return 0;
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441 }
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442 SET_SCOPE(scopes, name, FREE);
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443 ste->ste_free = 1;
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444 return PySet_Add(free, name) >= 0;
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445 }
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446 if (flags & DEF_BOUND) {
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447 SET_SCOPE(scopes, name, LOCAL);
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448 if (PySet_Add(local, name) < 0)
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449 return 0;
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450 if (PySet_Discard(global, name) < 0)
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451 return 0;
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452 return 1;
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453 }
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454 /* If an enclosing block has a binding for this name, it
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455 is a free variable rather than a global variable.
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456 Note that having a non-NULL bound implies that the block
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457 is nested.
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458 */
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459 if (bound && PySet_Contains(bound, name)) {
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460 SET_SCOPE(scopes, name, FREE);
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461 ste->ste_free = 1;
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462 return PySet_Add(free, name) >= 0;
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463 }
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464 /* If a parent has a global statement, then call it global
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465 explicit? It could also be global implicit.
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466 */
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467 if (global && PySet_Contains(global, name)) {
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468 SET_SCOPE(scopes, name, GLOBAL_IMPLICIT);
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469 return 1;
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470 }
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471 if (ste->ste_nested)
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472 ste->ste_free = 1;
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473 SET_SCOPE(scopes, name, GLOBAL_IMPLICIT);
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474 return 1;
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475 }
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476
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477 #undef SET_SCOPE
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478
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479 /* If a name is defined in free and also in locals, then this block
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480 provides the binding for the free variable. The name should be
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481 marked CELL in this block and removed from the free list.
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482
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483 Note that the current block's free variables are included in free.
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484 That's safe because no name can be free and local in the same scope.
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485
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486 The 'restricted' argument may be set to a string to restrict the analysis
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487 to the one variable whose name equals that string (e.g. "__class__").
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488 */
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489
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490 static int
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491 analyze_cells(PyObject *scopes, PyObject *free, const char *restricted)
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492 {
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493 PyObject *name, *v, *v_cell;
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494 int success = 0;
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495 Py_ssize_t pos = 0;
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496
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497 v_cell = PyLong_FromLong(CELL);
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498 if (!v_cell)
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499 return 0;
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500 while (PyDict_Next(scopes, &pos, &name, &v)) {
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501 long scope;
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502 assert(PyLong_Check(v));
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503 scope = PyLong_AS_LONG(v);
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504 if (scope != LOCAL)
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505 continue;
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506 if (!PySet_Contains(free, name))
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507 continue;
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508 if (restricted != NULL &&
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509 PyUnicode_CompareWithASCIIString(name, restricted))
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510 continue;
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511 /* Replace LOCAL with CELL for this name, and remove
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512 from free. It is safe to replace the value of name
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513 in the dict, because it will not cause a resize.
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514 */
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515 if (PyDict_SetItem(scopes, name, v_cell) < 0)
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516 goto error;
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517 if (PySet_Discard(free, name) < 0)
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518 goto error;
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519 }
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520 success = 1;
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521 error:
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522 Py_DECREF(v_cell);
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523 return success;
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524 }
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525
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526 /* Check for illegal statements in unoptimized namespaces */
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527 static int
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528 check_unoptimized(const PySTEntryObject* ste) {
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529 const char* trailer;
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530
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531 if (ste->ste_type != FunctionBlock || !ste->ste_unoptimized
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532 || !(ste->ste_free || ste->ste_child_free))
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533 return 1;
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534
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535 trailer = (ste->ste_child_free ?
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536 "contains a nested function with free variables" :
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537 "is a nested function");
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538
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539 switch (ste->ste_unoptimized) {
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540 case OPT_TOPLEVEL: /* import * at top-level is fine */
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541 return 1;
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542 case OPT_IMPORT_STAR:
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543 PyErr_Format(PyExc_SyntaxError,
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544 "import * is not allowed in function '%U' because it %s",
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545 ste->ste_name, trailer);
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546 break;
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547 }
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548
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549 PyErr_SyntaxLocationEx(ste->ste_table->st_filename, ste->ste_opt_lineno,
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550 ste->ste_opt_col_offset);
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551 return 0;
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552 }
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553
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554 /* Enter the final scope information into the ste_symbols dict.
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555 *
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556 * All arguments are dicts. Modifies symbols, others are read-only.
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557 */
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558 static int
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559 update_symbols(PyObject *symbols, PyObject *scopes,
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diff changeset
560 PyObject *bound, PyObject *free, int classflag)
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561 {
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562 PyObject *name = NULL, *itr = NULL;
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563 PyObject *v = NULL, *v_scope = NULL, *v_new = NULL, *v_free = NULL;
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564 Py_ssize_t pos = 0;
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565
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566 /* Update scope information for all symbols in this scope */
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567 while (PyDict_Next(symbols, &pos, &name, &v)) {
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568 long scope, flags;
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569 assert(PyLong_Check(v));
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570 flags = PyLong_AS_LONG(v);
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571 v_scope = PyDict_GetItem(scopes, name);
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572 assert(v_scope && PyLong_Check(v_scope));
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573 scope = PyLong_AS_LONG(v_scope);
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574 flags |= (scope << SCOPE_OFFSET);
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575 v_new = PyLong_FromLong(flags);
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576 if (!v_new)
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577 return 0;
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578 if (PyDict_SetItem(symbols, name, v_new) < 0) {
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579 Py_DECREF(v_new);
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580 return 0;
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581 }
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582 Py_DECREF(v_new);
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583 }
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584
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585 /* Record not yet resolved free variables from children (if any) */
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586 v_free = PyLong_FromLong(FREE << SCOPE_OFFSET);
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587 if (!v_free)
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588 return 0;
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589
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590 itr = PyObject_GetIter(free);
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591 if (!itr)
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592 goto error;
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593
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594 while ((name = PyIter_Next(itr))) {
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595 v = PyDict_GetItem(symbols, name);
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596
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597 /* Handle symbol that already exists in this scope */
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598 if (v) {
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599 /* Handle a free variable in a method of
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600 the class that has the same name as a local
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601 or global in the class scope.
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602 */
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603 if (classflag &&
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604 PyLong_AS_LONG(v) & (DEF_BOUND | DEF_GLOBAL)) {
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605 long flags = PyLong_AS_LONG(v) | DEF_FREE_CLASS;
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606 v_new = PyLong_FromLong(flags);
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607 if (!v_new) {
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608 goto error;
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609 }
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610 if (PyDict_SetItem(symbols, name, v_new) < 0) {
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611 Py_DECREF(v_new);
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612 goto error;
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613 }
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614 Py_DECREF(v_new);
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615 }
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616 /* It's a cell, or already free in this scope */
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617 Py_DECREF(name);
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618 continue;
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619 }
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620 /* Handle global symbol */
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621 if (!PySet_Contains(bound, name)) {
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622 Py_DECREF(name);
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623 continue; /* it's a global */
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624 }
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625 /* Propagate new free symbol up the lexical stack */
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626 if (PyDict_SetItem(symbols, name, v_free) < 0) {
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627 goto error;
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628 }
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629 Py_DECREF(name);
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630 }
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631 Py_DECREF(itr);
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632 Py_DECREF(v_free);
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633 return 1;
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634 error:
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635 Py_XDECREF(v_free);
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636 Py_XDECREF(itr);
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637 Py_XDECREF(name);
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638 return 0;
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639 }
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640
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641 /* Make final symbol table decisions for block of ste.
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642
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643 Arguments:
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644 ste -- current symtable entry (input/output)
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645 bound -- set of variables bound in enclosing scopes (input). bound
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646 is NULL for module blocks.
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647 free -- set of free variables in enclosed scopes (output)
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648 globals -- set of declared global variables in enclosing scopes (input)
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649
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650 The implementation uses two mutually recursive functions,
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651 analyze_block() and analyze_child_block(). analyze_block() is
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diff changeset
652 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
653 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
654 used to evaluated nested blocks.
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
655
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
656 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
657 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
658 propagate back to a parent block.
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
659 */
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
660
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
661 static int
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
662 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
663 PyObject *global, PyObject* child_free);
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
664
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
665 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
666 analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
667 PyObject *global)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
668 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
669 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
670 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
671 PyObject *temp;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
672 int i, success = 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
673 Py_ssize_t pos = 0;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
674
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
675 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
676 if (!local)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
677 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
678 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
679 if (!scopes)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
680 goto error;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
681
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
682 /* Allocate new global and bound variable dictionaries. These
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
683 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
684 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
685 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
686 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
687 after names are analyzed.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
688 */
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
689
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
690 /* 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
691 can write reasonable helper functions?
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
692 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
693 newglobal = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
694 if (!newglobal)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
695 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
696 newfree = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
697 if (!newfree)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
698 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
699 newbound = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
700 if (!newbound)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
701 goto error;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
702
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
703 /* 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
704 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
705 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
706 this one.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
707 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
708 if (ste->ste_type == ClassBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
709 /* Pass down known globals */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
710 temp = PyNumber_InPlaceOr(newglobal, global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
711 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
712 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
713 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
714 /* Pass down previously bound symbols */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
715 if (bound) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
716 temp = PyNumber_InPlaceOr(newbound, bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
717 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
718 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
719 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
720 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
721 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
722
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
723 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
724 long flags = PyLong_AS_LONG(v);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
725 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
726 bound, local, free, global))
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 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
729
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
730 /* 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
731 if (ste->ste_type != ClassBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
732 /* Add function locals to bound set */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
733 if (ste->ste_type == FunctionBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
734 temp = PyNumber_InPlaceOr(newbound, local);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
735 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
736 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
737 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
738 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
739 /* Pass down previously bound symbols */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
740 if (bound) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
741 temp = PyNumber_InPlaceOr(newbound, bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
742 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
743 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
744 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
745 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
746 /* Pass down known globals */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
747 temp = PyNumber_InPlaceOr(newglobal, global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
748 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
749 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
750 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
751 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
752 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
753 /* Special-case __class__ */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
754 assert(PySet_Contains(local, __class__) == 1);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
755 if (PySet_Add(newbound, __class__) < 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
756 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
757 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
758
69231
b6fe63c914e4 Issue #9904: fix and clarify some comments + fix indentation in symtable code
Eli Bendersky <eliben@gmail.com>
parents: 68257
diff changeset
759 /* 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
760
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
761 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
762 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
763 be collected in allfree.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
764 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
765 allfree = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
766 if (!allfree)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
767 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
768 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
769 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
770 PySTEntryObject* entry;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
771 assert(c && PySTEntry_Check(c));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
772 entry = (PySTEntryObject*)c;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
773 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
774 allfree))
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 /* 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
777 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
778 ste->ste_child_free = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
779 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
780
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
781 temp = PyNumber_InPlaceOr(newfree, allfree);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
782 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
783 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
784 Py_DECREF(temp);
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
785
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
786 /* 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
787 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
788 NULL))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
789 goto error;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
790 else if (ste->ste_type == ClassBlock && !analyze_cells(scopes, newfree,
70889
2d62ee4e7d98 use a invalid name for the __class__ closure for super() (closes #12370)
Benjamin Peterson <benjamin@python.org>
parents: 70499
diff changeset
791 "@__class__"))
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
792 goto error;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
793 /* Records the results of the analysis in the symbol table entry */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
794 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
795 ste->ste_type == ClassBlock))
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
796 goto error;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
797 if (!check_unoptimized(ste))
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
798 goto error;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
799
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
800 temp = PyNumber_InPlaceOr(free, newfree);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
801 if (!temp)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
802 goto error;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
803 Py_DECREF(temp);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
804 success = 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
805 error:
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
806 Py_XDECREF(scopes);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
807 Py_XDECREF(local);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
808 Py_XDECREF(newbound);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
809 Py_XDECREF(newglobal);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
810 Py_XDECREF(newfree);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
811 Py_XDECREF(allfree);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
812 if (!success)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
813 assert(PyErr_Occurred());
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
814 return success;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
815 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
816
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
817 static int
61467
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parents: 57378
diff changeset
818 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
819 PyObject *global, PyObject* child_free)
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
820 {
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
821 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
822 PyObject *temp;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
823
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
824 /* 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
825
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
826 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
827 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
828 dictionaries.
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
829
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
830 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
831 temp_bound = PySet_New(bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
832 if (!temp_bound)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
833 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
834 temp_free = PySet_New(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
835 if (!temp_free)
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 temp_global = PySet_New(global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
838 if (!temp_global)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
839 goto error;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
840
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
841 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
842 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
843 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
844 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
845 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
846 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
847 Py_DECREF(temp_bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
848 Py_DECREF(temp_free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
849 Py_DECREF(temp_global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
850 return 1;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
851 error:
61467
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parents: 57378
diff changeset
852 Py_XDECREF(temp_bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
853 Py_XDECREF(temp_free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
854 Py_XDECREF(temp_global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
855 return 0;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
856 }
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
857
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
858 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
859 symtable_analyze(struct symtable *st)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
860 {
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
861 PyObject *free, *global;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
862 int r;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
863
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
864 free = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
865 if (!free)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
866 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
867 global = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
868 if (!global) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
869 Py_DECREF(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
870 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
871 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
872 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
873 Py_DECREF(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
874 Py_DECREF(global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
875 return r;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
876 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
877
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
878
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
879 static int
36089
4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations.
Neal Norwitz <nnorwitz@gmail.com>
parents: 35939
diff changeset
880 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
881 {
61467
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parents: 57378
diff changeset
882 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
883 lineno, NULL, NULL) < 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
884 if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
885 PyErr_SetString(PyExc_SyntaxError, msg);
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
886 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
887 st->st_cur->ste_col_offset);
61467
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parents: 57378
diff changeset
888 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
889 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
890 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
891 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
892 }
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
893
48725
40c07a61e1c2 Merged revisions 65715,65724,65726,65732,65736-65739,65775 via svnmerge from
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parents: 48660
diff changeset
894 /* 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
895 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
896 in symtable_exit_block().
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
897 */
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
898
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
899 static int
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
900 symtable_exit_block(struct symtable *st, void *ast)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
901 {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
902 Py_ssize_t size;
35742
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parents: 32121
diff changeset
903
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
904 st->st_cur = NULL;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
905 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
906 if (size) {
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
907 if (PyList_SetSlice(st->st_stack, size - 1, size, NULL) < 0)
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
908 return 0;
71129
6b3872a11299 fix possibily uninitialized memory usage (closes #12474)
Benjamin Peterson <benjamin@python.org>
parents: 71087
diff changeset
909 if (--size)
6b3872a11299 fix possibily uninitialized memory usage (closes #12474)
Benjamin Peterson <benjamin@python.org>
parents: 71087
diff changeset
910 st->st_cur = (PySTEntryObject *)PyList_GET_ITEM(st->st_stack, size - 1);
61467
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parents: 57378
diff changeset
911 }
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
912 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
913 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
914
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
915 static int
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
916 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
917 void *ast, int lineno, int col_offset)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
918 {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
919 PySTEntryObject *prev = NULL, *ste;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
920
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
921 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
922 if (ste == NULL)
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
923 return 0;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
924 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
925 Py_DECREF(ste);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
926 return 0;
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
927 }
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
928 prev = st->st_cur;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
929 /* 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
930 Py_DECREF(ste);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
931 st->st_cur = ste;
65393
3618d9d7902d Merged revisions 85562 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 61467
diff changeset
932 if (block == ModuleBlock)
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
933 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
934 if (prev) {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
935 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
936 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
937 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
938 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
939 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
940 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
941
36231
d3f4c467e439 Fix icc warnings: conversion from "long" to "int" may lose significant bits
Neal Norwitz <nnorwitz@gmail.com>
parents: 36226
diff changeset
942 static long
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
943 symtable_lookup(struct symtable *st, PyObject *name)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
944 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
945 PyObject *o;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
946 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
947 if (!mangled)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
948 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
949 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
950 Py_DECREF(mangled);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
951 if (!o)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
952 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
953 return PyLong_AsLong(o);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
954 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
955
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
956 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
957 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
958 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
959 PyObject *o;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
960 PyObject *dict;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
961 long val;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
962 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
963
40965
30e5cb3a55ac Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 40898
diff changeset
964
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
965 if (!mangled)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
966 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
967 dict = 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 ((o = PyDict_GetItem(dict, mangled))) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
969 val = PyLong_AS_LONG(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
970 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
971 /* 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
972 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
973 PyErr_SyntaxLocationEx(st->st_filename,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
974 st->st_cur->ste_lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
975 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
976 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
977 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
978 val |= flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
979 } else
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
980 val = flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
981 o = PyLong_FromLong(val);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
982 if (o == NULL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
983 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
984 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
985 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
986 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
987 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
988 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
989
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
990 if (flag & DEF_PARAM) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
991 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
992 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
993 } else if (flag & DEF_GLOBAL) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
994 /* 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
995 perhaps only DEF_FREE_GLOBAL */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
996 val = flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
997 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
998 val |= PyLong_AS_LONG(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
999 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1000 o = PyLong_FromLong(val);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1001 if (o == NULL)
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1002 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1003 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
1004 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1005 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1006 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1007 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1008 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1009 Py_DECREF(mangled);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1010 return 1;
35779
19d796bd740f Fix private name mangling. The symtable also must do mangles so that
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents: 35766
diff changeset
1011
19d796bd740f Fix private name mangling. The symtable also must do mangles so that
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents: 35766
diff changeset
1012 error:
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1013 Py_DECREF(mangled);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1014 return 0;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1015 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1016
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1017 /* VISIT, VISIT_SEQ and VIST_SEQ_TAIL take an ASDL type as their second argument.
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1018 They use the ASDL name to synthesize the name of the C type and the visit
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1019 function.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1020
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1021 VISIT_SEQ_TAIL permits the start of an ASDL sequence to be skipped, which is
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1022 useful if the first node in the sequence requires special treatment.
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1023 */
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1024
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1025 #define VISIT(ST, TYPE, V) \
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1026 if (!symtable_visit_ ## TYPE((ST), (V))) \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1027 return 0;
35863
79f2ce320192 Fix a lot of memory and ref leaks in error paths.
Neal Norwitz <nnorwitz@gmail.com>
parents: 35793
diff changeset
1028
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1029 #define VISIT_SEQ(ST, TYPE, SEQ) { \
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1030 int i; \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1031 asdl_seq *seq = (SEQ); /* avoid variable capture */ \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1032 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
1033 TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, i); \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1034 if (!symtable_visit_ ## TYPE((ST), elt)) \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1035 return 0; \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1036 } \
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1037 }
35863
79f2ce320192 Fix a lot of memory and ref leaks in error paths.
Neal Norwitz <nnorwitz@gmail.com>
parents: 35793
diff changeset
1038
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1039 #define VISIT_SEQ_TAIL(ST, TYPE, SEQ, START) { \
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1040 int i; \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1041 asdl_seq *seq = (SEQ); /* avoid variable capture */ \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1042 for (i = (START); i < asdl_seq_LEN(seq); i++) { \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1043 TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, i); \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1044 if (!symtable_visit_ ## TYPE((ST), elt)) \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1045 return 0; \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1046 } \
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1047 }
35863
79f2ce320192 Fix a lot of memory and ref leaks in error paths.
Neal Norwitz <nnorwitz@gmail.com>
parents: 35793
diff changeset
1048
40215
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents: 39783
diff changeset
1049 #define VISIT_KWONLYDEFAULTS(ST, KW_DEFAULTS) { \
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diff changeset
1050 int i = 0; \
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parents: 57378
diff changeset
1051 asdl_seq *seq = (KW_DEFAULTS); /* avoid variable capture */ \
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diff changeset
1052 for (i = 0; i < asdl_seq_LEN(seq); i++) { \
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diff changeset
1053 expr_ty elt = (expr_ty)asdl_seq_GET(seq, i); \
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diff changeset
1054 if (!elt) continue; /* can be NULL */ \
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diff changeset
1055 if (!symtable_visit_expr((ST), elt)) \
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diff changeset
1056 return 0; \
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1057 } \
40215
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents: 39783
diff changeset
1058 }
1cce0526d9b0 Jiwon Seo's PEP 3102 implementation.
Guido van Rossum <guido@python.org>
parents: 39783
diff changeset
1059
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1060 static int
36695
b6d2f6fd3e11 PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents: 36666
diff changeset
1061 symtable_new_tmpname(struct symtable *st)
b6d2f6fd3e11 PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents: 36666
diff changeset
1062 {
61467
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diff changeset
1063 char tmpname[256];
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1064 identifier tmp;
36695
b6d2f6fd3e11 PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents: 36666
diff changeset
1065
61467
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diff changeset
1066 PyOS_snprintf(tmpname, sizeof(tmpname), "_[%d]",
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parents: 57378
diff changeset
1067 ++st->st_cur->ste_tmpname);
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diff changeset
1068 tmp = PyUnicode_InternFromString(tmpname);
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diff changeset
1069 if (!tmp)
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diff changeset
1070 return 0;
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diff changeset
1071 if (!symtable_add_def(st, tmp, DEF_LOCAL))
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diff changeset
1072 return 0;
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diff changeset
1073 Py_DECREF(tmp);
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diff changeset
1074 return 1;
36695
b6d2f6fd3e11 PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents: 36666
diff changeset
1075 }
b6d2f6fd3e11 PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents: 36666
diff changeset
1076
40215
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Guido van Rossum <guido@python.org>
parents: 39783
diff changeset
1077
36695
b6d2f6fd3e11 PEP 343 -- the with-statement.
Guido van Rossum <guido@python.org>
parents: 36666
diff changeset
1078 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1079 symtable_visit_stmt(struct symtable *st, stmt_ty s)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1080 {
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diff changeset
1081 switch (s->kind) {
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1082 case FunctionDef_kind:
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1083 if (!symtable_add_def(st, s->v.FunctionDef.name, DEF_LOCAL))
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diff changeset
1084 return 0;
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1085 if (s->v.FunctionDef.args->defaults)
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diff changeset
1086 VISIT_SEQ(st, expr, s->v.FunctionDef.args->defaults);
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diff changeset
1087 if (s->v.FunctionDef.args->kw_defaults)
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diff changeset
1088 VISIT_KWONLYDEFAULTS(st,
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diff changeset
1089 s->v.FunctionDef.args->kw_defaults);
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diff changeset
1090 if (!symtable_visit_annotations(st, s))
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diff changeset
1091 return 0;
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1092 if (s->v.FunctionDef.decorator_list)
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diff changeset
1093 VISIT_SEQ(st, expr, s->v.FunctionDef.decorator_list);
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diff changeset
1094 if (!symtable_enter_block(st, s->v.FunctionDef.name,
64861
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Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1095 FunctionBlock, (void *)s, s->lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1096 s->col_offset))
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diff changeset
1097 return 0;
71082
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
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parents: 70920
diff changeset
1098 VISIT(st, arguments, s->v.FunctionDef.args);
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1099 VISIT_SEQ(st, stmt, s->v.FunctionDef.body);
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1100 if (!symtable_exit_block(st, s))
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1101 return 0;
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1102 break;
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1103 case ClassDef_kind: {
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1104 PyObject *tmp;
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1105 if (!symtable_add_def(st, s->v.ClassDef.name, DEF_LOCAL))
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1106 return 0;
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1107 VISIT_SEQ(st, expr, s->v.ClassDef.bases);
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diff changeset
1108 VISIT_SEQ(st, keyword, s->v.ClassDef.keywords);
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diff changeset
1109 if (s->v.ClassDef.starargs)
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diff changeset
1110 VISIT(st, expr, s->v.ClassDef.starargs);
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diff changeset
1111 if (s->v.ClassDef.kwargs)
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diff changeset
1112 VISIT(st, expr, s->v.ClassDef.kwargs);
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diff changeset
1113 if (s->v.ClassDef.decorator_list)
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diff changeset
1114 VISIT_SEQ(st, expr, s->v.ClassDef.decorator_list);
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diff changeset
1115 if (!symtable_enter_block(st, s->v.ClassDef.name, ClassBlock,
64861
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parents: 63114
diff changeset
1116 (void *)s, s->lineno, s->col_offset))
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1117 return 0;
70889
2d62ee4e7d98 use a invalid name for the __class__ closure for super() (closes #12370)
Benjamin Peterson <benjamin@python.org>
parents: 70499
diff changeset
1118 if (!symtable_add_def(st, __class__, DEF_LOCAL) ||
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1119 !GET_IDENTIFIER(__locals__) ||
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1120 !symtable_add_def(st, __locals__, DEF_PARAM)) {
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diff changeset
1121 symtable_exit_block(st, s);
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diff changeset
1122 return 0;
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1123 }
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1124 tmp = st->st_private;
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diff changeset
1125 st->st_private = s->v.ClassDef.name;
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Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1126 VISIT_SEQ(st, stmt, s->v.ClassDef.body);
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diff changeset
1127 st->st_private = tmp;
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1128 if (!symtable_exit_block(st, s))
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1129 return 0;
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diff changeset
1130 break;
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1131 }
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diff changeset
1132 case Return_kind:
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1133 if (s->v.Return.value) {
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diff changeset
1134 VISIT(st, expr, s->v.Return.value);
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diff changeset
1135 st->st_cur->ste_returns_value = 1;
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diff changeset
1136 if (st->st_cur->ste_generator) {
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diff changeset
1137 PyErr_SetString(PyExc_SyntaxError,
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diff changeset
1138 RETURN_VAL_IN_GENERATOR);
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diff changeset
1139 PyErr_SyntaxLocationEx(st->st_filename,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1140 s->lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1141 s->col_offset);
61467
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1142 return 0;
43102
981ecc526703 Issue #1066: implement PEP 3109, 2/3 of PEP 3134.
Collin Winter <collinw@gmail.com>
parents: 42801
diff changeset
1143 }
61467
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1144 }
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1145 break;
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1146 case Delete_kind:
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diff changeset
1147 VISIT_SEQ(st, expr, s->v.Delete.targets);
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diff changeset
1148 break;
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diff changeset
1149 case Assign_kind:
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1150 VISIT_SEQ(st, expr, s->v.Assign.targets);
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diff changeset
1151 VISIT(st, expr, s->v.Assign.value);
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diff changeset
1152 break;
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diff changeset
1153 case AugAssign_kind:
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diff changeset
1154 VISIT(st, expr, s->v.AugAssign.target);
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diff changeset
1155 VISIT(st, expr, s->v.AugAssign.value);
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1156 break;
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diff changeset
1157 case For_kind:
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diff changeset
1158 VISIT(st, expr, s->v.For.target);
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diff changeset
1159 VISIT(st, expr, s->v.For.iter);
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diff changeset
1160 VISIT_SEQ(st, stmt, s->v.For.body);
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diff changeset
1161 if (s->v.For.orelse)
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diff changeset
1162 VISIT_SEQ(st, stmt, s->v.For.orelse);
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diff changeset
1163 break;
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1164 case While_kind:
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1165 VISIT(st, expr, s->v.While.test);
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diff changeset
1166 VISIT_SEQ(st, stmt, s->v.While.body);
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diff changeset
1167 if (s->v.While.orelse)
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diff changeset
1168 VISIT_SEQ(st, stmt, s->v.While.orelse);
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1169 break;
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1170 case If_kind:
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1171 /* XXX if 0: and lookup_yield() hacks */
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diff changeset
1172 VISIT(st, expr, s->v.If.test);
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diff changeset
1173 VISIT_SEQ(st, stmt, s->v.If.body);
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1174 if (s->v.If.orelse)
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diff changeset
1175 VISIT_SEQ(st, stmt, s->v.If.orelse);
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diff changeset
1176 break;
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diff changeset
1177 case Raise_kind:
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diff changeset
1178 if (s->v.Raise.exc) {
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parents: 57378
diff changeset
1179 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
1180 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
1181 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
1182 }
61467
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diff changeset
1183 }
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diff changeset
1184 break;
70499
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1185 case Try_kind:
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1186 VISIT_SEQ(st, stmt, s->v.Try.body);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1187 VISIT_SEQ(st, stmt, s->v.Try.orelse);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1188 VISIT_SEQ(st, excepthandler, s->v.Try.handlers);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1189 VISIT_SEQ(st, stmt, s->v.Try.finalbody);
61467
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diff changeset
1190 break;
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parents: 57378
diff changeset
1191 case Assert_kind:
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parents: 57378
diff changeset
1192 VISIT(st, expr, s->v.Assert.test);
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parents: 57378
diff changeset
1193 if (s->v.Assert.msg)
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diff changeset
1194 VISIT(st, expr, s->v.Assert.msg);
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diff changeset
1195 break;
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diff changeset
1196 case Import_kind:
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diff changeset
1197 VISIT_SEQ(st, alias, s->v.Import.names);
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parents: 57378
diff changeset
1198 /* XXX Don't have the lineno available inside
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diff changeset
1199 visit_alias */
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1200 if (st->st_cur->ste_unoptimized && !st->st_cur->ste_opt_lineno) {
61467
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diff changeset
1201 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
1202 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
1203 }
61467
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diff changeset
1204 break;
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diff changeset
1205 case ImportFrom_kind:
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diff changeset
1206 VISIT_SEQ(st, alias, s->v.ImportFrom.names);
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diff changeset
1207 /* XXX Don't have the lineno available inside
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diff changeset
1208 visit_alias */
64861
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Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1209 if (st->st_cur->ste_unoptimized && !st->st_cur->ste_opt_lineno) {
61467
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parents: 57378
diff changeset
1210 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
1211 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
1212 }
61467
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diff changeset
1213 break;
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parents: 57378
diff changeset
1214 case Global_kind: {
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parents: 57378
diff changeset
1215 int i;
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parents: 57378
diff changeset
1216 asdl_seq *seq = s->v.Global.names;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1217 for (i = 0; i < asdl_seq_LEN(seq); i++) {
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parents: 57378
diff changeset
1218 identifier name = (identifier)asdl_seq_GET(seq, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1219 char *c_name = _PyUnicode_AsString(name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1220 long cur = symtable_lookup(st, name);
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diff changeset
1221 if (cur < 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1222 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1223 if (cur & (DEF_LOCAL | USE)) {
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diff changeset
1224 char buf[256];
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1225 if (cur & DEF_LOCAL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1226 PyOS_snprintf(buf, sizeof(buf),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1227 GLOBAL_AFTER_ASSIGN,
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diff changeset
1228 c_name);
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diff changeset
1229 else
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diff changeset
1230 PyOS_snprintf(buf, sizeof(buf),
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diff changeset
1231 GLOBAL_AFTER_USE,
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diff changeset
1232 c_name);
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diff changeset
1233 if (!symtable_warn(st, buf, s->lineno))
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diff changeset
1234 return 0;
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diff changeset
1235 }
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diff changeset
1236 if (!symtable_add_def(st, name, DEF_GLOBAL))
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diff changeset
1237 return 0;
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diff changeset
1238 }
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diff changeset
1239 break;
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diff changeset
1240 }
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diff changeset
1241 case Nonlocal_kind: {
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diff changeset
1242 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1243 asdl_seq *seq = s->v.Nonlocal.names;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1244 for (i = 0; i < asdl_seq_LEN(seq); i++) {
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diff changeset
1245 identifier name = (identifier)asdl_seq_GET(seq, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1246 char *c_name = _PyUnicode_AsString(name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1247 long cur = symtable_lookup(st, name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1248 if (cur < 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1249 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1250 if (cur & (DEF_LOCAL | USE)) {
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diff changeset
1251 char buf[256];
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diff changeset
1252 if (cur & DEF_LOCAL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1253 PyOS_snprintf(buf, sizeof(buf),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1254 NONLOCAL_AFTER_ASSIGN,
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parents: 57378
diff changeset
1255 c_name);
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diff changeset
1256 else
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1257 PyOS_snprintf(buf, sizeof(buf),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1258 NONLOCAL_AFTER_USE,
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diff changeset
1259 c_name);
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diff changeset
1260 if (!symtable_warn(st, buf, s->lineno))
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diff changeset
1261 return 0;
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diff changeset
1262 }
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diff changeset
1263 if (!symtable_add_def(st, name, DEF_NONLOCAL))
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diff changeset
1264 return 0;
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diff changeset
1265 }
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diff changeset
1266 break;
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diff changeset
1267 }
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diff changeset
1268 case Expr_kind:
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diff changeset
1269 VISIT(st, expr, s->v.Expr.value);
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diff changeset
1270 break;
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diff changeset
1271 case Pass_kind:
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diff changeset
1272 case Break_kind:
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diff changeset
1273 case Continue_kind:
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diff changeset
1274 /* nothing to do here */
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1275 break;
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diff changeset
1276 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
1277 VISIT_SEQ(st, withitem, s->v.With.items);
61467
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diff changeset
1278 VISIT_SEQ(st, stmt, s->v.With.body);
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diff changeset
1279 break;
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diff changeset
1280 }
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diff changeset
1281 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1282 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1283
61467
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diff changeset
1284 static int
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1285 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
1286 {
61467
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diff changeset
1287 switch (e->kind) {
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diff changeset
1288 case BoolOp_kind:
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diff changeset
1289 VISIT_SEQ(st, expr, e->v.BoolOp.values);
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diff changeset
1290 break;
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diff changeset
1291 case BinOp_kind:
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diff changeset
1292 VISIT(st, expr, e->v.BinOp.left);
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diff changeset
1293 VISIT(st, expr, e->v.BinOp.right);
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diff changeset
1294 break;
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diff changeset
1295 case UnaryOp_kind:
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diff changeset
1296 VISIT(st, expr, e->v.UnaryOp.operand);
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diff changeset
1297 break;
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diff changeset
1298 case Lambda_kind: {
61466
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1299 if (!GET_IDENTIFIER(lambda))
61467
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1300 return 0;
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1301 if (e->v.Lambda.args->defaults)
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diff changeset
1302 VISIT_SEQ(st, expr, e->v.Lambda.args->defaults);
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diff changeset
1303 if (!symtable_enter_block(st, lambda,
64861
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diff changeset
1304 FunctionBlock, (void *)e, e->lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1305 e->col_offset))
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1306 return 0;
71082
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1307 VISIT(st, arguments, e->v.Lambda.args);
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1308 VISIT(st, expr, e->v.Lambda.body);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1309 if (!symtable_exit_block(st, (void *)e))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1310 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1311 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1312 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1313 case IfExp_kind:
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parents: 57378
diff changeset
1314 VISIT(st, expr, e->v.IfExp.test);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1315 VISIT(st, expr, e->v.IfExp.body);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1316 VISIT(st, expr, e->v.IfExp.orelse);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1317 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1318 case Dict_kind:
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1319 VISIT_SEQ(st, expr, e->v.Dict.keys);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1320 VISIT_SEQ(st, expr, e->v.Dict.values);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1321 break;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1322 case Set_kind:
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1323 VISIT_SEQ(st, expr, e->v.Set.elts);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1324 break;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1325 case GeneratorExp_kind:
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1326 if (!symtable_visit_genexp(st, e))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1327 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1328 break;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1329 case ListComp_kind:
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1330 if (!symtable_visit_listcomp(st, e))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1331 return 0;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1332 break;
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parents: 57378
diff changeset
1333 case SetComp_kind:
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parents: 57378
diff changeset
1334 if (!symtable_visit_setcomp(st, e))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1335 return 0;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1336 break;
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parents: 57378
diff changeset
1337 case DictComp_kind:
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1338 if (!symtable_visit_dictcomp(st, e))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1339 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1340 break;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1341 case Yield_kind:
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1342 if (e->v.Yield.value)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1343 VISIT(st, expr, e->v.Yield.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1344 st->st_cur->ste_generator = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1345 if (st->st_cur->ste_returns_value) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1346 PyErr_SetString(PyExc_SyntaxError,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1347 RETURN_VAL_IN_GENERATOR);
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1348 PyErr_SyntaxLocationEx(st->st_filename,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1349 e->lineno, e->col_offset);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1350 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1351 }
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parents: 57378
diff changeset
1352 break;
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parents: 57378
diff changeset
1353 case Compare_kind:
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parents: 57378
diff changeset
1354 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
1355 VISIT_SEQ(st, expr, e->v.Compare.comparators);
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parents: 57378
diff changeset
1356 break;
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parents: 57378
diff changeset
1357 case Call_kind:
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parents: 57378
diff changeset
1358 VISIT(st, expr, e->v.Call.func);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1359 VISIT_SEQ(st, expr, e->v.Call.args);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1360 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
1361 if (e->v.Call.starargs)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1362 VISIT(st, expr, e->v.Call.starargs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1363 if (e->v.Call.kwargs)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1364 VISIT(st, expr, e->v.Call.kwargs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1365 break;
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parents: 57378
diff changeset
1366 case Num_kind:
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parents: 57378
diff changeset
1367 case Str_kind:
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parents: 57378
diff changeset
1368 case Bytes_kind:
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parents: 57378
diff changeset
1369 case Ellipsis_kind:
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parents: 57378
diff changeset
1370 /* Nothing to do here. */
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parents: 57378
diff changeset
1371 break;
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parents: 57378
diff changeset
1372 /* The following exprs can be assignment targets. */
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parents: 57378
diff changeset
1373 case Attribute_kind:
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parents: 57378
diff changeset
1374 VISIT(st, expr, e->v.Attribute.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1375 break;
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parents: 57378
diff changeset
1376 case Subscript_kind:
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parents: 57378
diff changeset
1377 VISIT(st, expr, e->v.Subscript.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1378 VISIT(st, slice, e->v.Subscript.slice);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1379 break;
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parents: 57378
diff changeset
1380 case Starred_kind:
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parents: 57378
diff changeset
1381 VISIT(st, expr, e->v.Starred.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1382 break;
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parents: 57378
diff changeset
1383 case Name_kind:
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parents: 57378
diff changeset
1384 if (!symtable_add_def(st, e->v.Name.id,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1385 e->v.Name.ctx == Load ? USE : DEF_LOCAL))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1386 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1387 /* Special-case super: it counts as a use of __class__ */
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parents: 57378
diff changeset
1388 if (e->v.Name.ctx == Load &&
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1389 st->st_cur->ste_type == FunctionBlock &&
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1390 !PyUnicode_CompareWithASCIIString(e->v.Name.id, "super")) {
70889
2d62ee4e7d98 use a invalid name for the __class__ closure for super() (closes #12370)
Benjamin Peterson <benjamin@python.org>
parents: 70499
diff changeset
1391 if (!symtable_add_def(st, __class__, USE))
61467
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diff changeset
1392 return 0;
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parents: 57378
diff changeset
1393 }
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parents: 57378
diff changeset
1394 break;
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parents: 57378
diff changeset
1395 /* child nodes of List and Tuple will have expr_context set */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1396 case List_kind:
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parents: 57378
diff changeset
1397 VISIT_SEQ(st, expr, e->v.List.elts);
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diff changeset
1398 break;
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diff changeset
1399 case Tuple_kind:
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diff changeset
1400 VISIT_SEQ(st, expr, e->v.Tuple.elts);
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diff changeset
1401 break;
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diff changeset
1402 }
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diff changeset
1403 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1404 }
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1405
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1406 static int
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1407 symtable_implicit_arg(struct symtable *st, int pos)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1408 {
61467
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diff changeset
1409 PyObject *id = PyUnicode_FromFormat(".%d", pos);
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parents: 57378
diff changeset
1410 if (id == NULL)
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diff changeset
1411 return 0;
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diff changeset
1412 if (!symtable_add_def(st, id, DEF_PARAM)) {
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parents: 57378
diff changeset
1413 Py_DECREF(id);
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diff changeset
1414 return 0;
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diff changeset
1415 }
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diff changeset
1416 Py_DECREF(id);
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diff changeset
1417 return 1;
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1c4d192f1568 Merge ast-branch to head
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diff changeset
1418 }
1c4d192f1568 Merge ast-branch to head
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diff changeset
1419
61467
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diff changeset
1420 static int
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1421 symtable_visit_params(struct symtable *st, asdl_seq *args)
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
1422 {
61467
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diff changeset
1423 int i;
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diff changeset
1424
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diff changeset
1425 if (!args)
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parents: 57378
diff changeset
1426 return -1;
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1427
61467
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diff changeset
1428 for (i = 0; i < asdl_seq_LEN(args); i++) {
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diff changeset
1429 arg_ty arg = (arg_ty)asdl_seq_GET(args, i);
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diff changeset
1430 if (!symtable_add_def(st, arg->arg, DEF_PARAM))
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diff changeset
1431 return 0;
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diff changeset
1432 }
35742
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diff changeset
1433
61467
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diff changeset
1434 return 1;
35742
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Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1435 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1436
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1437 static int
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1438 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
1439 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1440 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1441
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1442 if (!args)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1443 return -1;
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1444
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1445 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
1446 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
1447 if (arg->annotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1448 VISIT(st, expr, arg->annotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1449 }
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1450
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1451 return 1;
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1452 }
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1453
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1454 static int
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1455 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
1456 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1457 arguments_ty a = s->v.FunctionDef.args;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1458
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1459 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
1460 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1461 if (a->varargannotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1462 VISIT(st, expr, a->varargannotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1463 if (a->kwargannotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1464 VISIT(st, expr, a->kwargannotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1465 if (a->kwonlyargs && !symtable_visit_argannotations(st, a->kwonlyargs))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1466 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1467 if (s->v.FunctionDef.returns)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1468 VISIT(st, expr, s->v.FunctionDef.returns);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1469 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1470 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1471
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1472 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1473 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
1474 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1475 /* skip default arguments inside function block
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1476 XXX should ast be different?
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1477 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1478 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
1479 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1480 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
1481 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1482 if (a->vararg) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1483 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
1484 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1485 st->st_cur->ste_varargs = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1486 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1487 if (a->kwarg) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1488 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
1489 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1490 st->st_cur->ste_varkeywords = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1491 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1492 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1493 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1494
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1495
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1496 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1497 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
1498 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1499 if (eh->v.ExceptHandler.type)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1500 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
1501 if (eh->v.ExceptHandler.name)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1502 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
1503 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1504 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
1505 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1506 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1507
70438
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1508 static int
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1509 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
1510 {
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1511 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
1512 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
1513 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
1514 }
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1515 return 1;
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1516 }
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1517
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1518
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1519 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1520 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
1521 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1522 /* 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
1523 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
1524 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
1525 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1526 PyObject *store_name;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1527 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
1528 Py_ssize_t dot = PyUnicode_FindChar(name, '.', 0,
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1529 PyUnicode_GET_LENGTH(name), 1);
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1530 if (dot != -1) {
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1531 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
1532 if (!store_name)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1533 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1534 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1535 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1536 store_name = name;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1537 Py_INCREF(store_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1538 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1539 if (PyUnicode_CompareWithASCIIString(name, "*")) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1540 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
1541 Py_DECREF(store_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1542 return r;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1543 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1544 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1545 if (st->st_cur->ste_type != ModuleBlock) {
70919
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1546 int lineno = st->st_cur->ste_lineno;
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1547 int col_offset = st->st_cur->ste_col_offset;
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1548 PyErr_SetString(PyExc_SyntaxError, IMPORT_STAR_WARNING);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1549 PyErr_SyntaxLocationEx(st->st_filename, lineno, col_offset);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1550 Py_DECREF(store_name);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1551 return 0;
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1552 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1553 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
1554 Py_DECREF(store_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1555 return 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1556 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1557 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1558
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1559
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1560 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1561 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
1562 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1563 VISIT(st, expr, lc->target);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1564 VISIT(st, expr, lc->iter);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1565 VISIT_SEQ(st, expr, lc->ifs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1566 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1567 }
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1568
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1569
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1570 static int
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1571 symtable_visit_keyword(struct symtable *st, keyword_ty k)
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1572 {
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1573 VISIT(st, expr, k->value);
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1574 return 1;
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1575 }
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1576
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1577
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1578 static int
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1579 symtable_visit_slice(struct symtable *st, slice_ty s)
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1580 {
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1581 switch (s->kind) {
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1582 case Slice_kind:
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1583 if (s->v.Slice.lower)
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1584 VISIT(st, expr, s->v.Slice.lower)
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1585 if (s->v.Slice.upper)
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1586 VISIT(st, expr, s->v.Slice.upper)
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1587 if (s->v.Slice.step)
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1588 VISIT(st, expr, s->v.Slice.step)
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1589 break;
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1590 case ExtSlice_kind:
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1591 VISIT_SEQ(st, slice, s->v.ExtSlice.dims)
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1592 break;
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1593 case Index_kind:
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1594 VISIT(st, expr, s->v.Index.value)
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1595 break;
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1596 }
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1597 return 1;
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1598 }
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1599
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1600 static int
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1601 symtable_handle_comprehension(struct symtable *st, expr_ty e,
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1602 identifier scope_name, asdl_seq *generators,
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1603 expr_ty elt, expr_ty value)
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1604 {
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1605 int is_generator = (e->kind == GeneratorExp_kind);
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1606 int needs_tmp = !is_generator;
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1607 comprehension_ty outermost = ((comprehension_ty)
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1608 asdl_seq_GET(generators, 0));
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1609 /* Outermost iterator is evaluated in current scope */
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1610 VISIT(st, expr, outermost->iter);
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1611 /* Create comprehension scope for the rest */
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1612 if (!scope_name ||
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1613 !symtable_enter_block(st, scope_name, FunctionBlock, (void *)e,
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1614 e->lineno, e->col_offset)) {
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1615 return 0;
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1616 }
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1617 st->st_cur->ste_generator = is_generator;
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1618 /* Outermost iter is received as an argument */
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1619 if (!symtable_implicit_arg(st, 0)) {
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1620 symtable_exit_block(st, (void *)e);
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1621 return 0;
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1622 }
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1623 /* Allocate temporary name if needed */
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1624 if (needs_tmp && !symtable_new_tmpname(st)) {
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1625 symtable_exit_block(st, (void *)e);
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1626 return 0;
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1627 }
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1628 VISIT(st, expr, outermost->target);
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1629 VISIT_SEQ(st, expr, outermost->ifs);
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diff changeset
1630 VISIT_SEQ_TAIL(st, comprehension, generators, 1);
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1631 if (value)
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1632 VISIT(st, expr, value);
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diff changeset
1633 VISIT(st, expr, elt);
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1634 return symtable_exit_block(st, (void *)e);
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1635 }
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1636
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1637 static int
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1638 symtable_visit_genexp(struct symtable *st, expr_ty e)
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1639 {
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1640 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(genexpr),
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1641 e->v.GeneratorExp.generators,
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1642 e->v.GeneratorExp.elt, NULL);
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1643 }
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1644
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1645 static int
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1646 symtable_visit_listcomp(struct symtable *st, expr_ty e)
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1647 {
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1648 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(listcomp),
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1649 e->v.ListComp.generators,
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1650 e->v.ListComp.elt, NULL);
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1651 }
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diff changeset
1652
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1653 static int
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1654 symtable_visit_setcomp(struct symtable *st, expr_ty e)
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diff changeset
1655 {
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1656 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(setcomp),
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1657 e->v.SetComp.generators,
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1658 e->v.SetComp.elt, NULL);
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1659 }
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diff changeset
1660
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1661 static int
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1662 symtable_visit_dictcomp(struct symtable *st, expr_ty e)
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diff changeset
1663 {
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1664 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(dictcomp),
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1665 e->v.DictComp.generators,
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1666 e->v.DictComp.key,
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1667 e->v.DictComp.value);
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1668 }