Mercurial > cpython-lru_cache-weakref

annotate Python/symtable.c @ 81711:e52df05b496a

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Drop support for Windows 2000; allow any XP API (but not Vista+). Drop SDK version configuration for Tk compilation, to not bind it to W2k anymore. Binding it to XP would conflict with Tk's own binding of tkMenu to W2k.
author Martin v. Löwis <martin@v.loewis.de>
date Fri, 25 Jan 2013 14:06:18 +0100
parents 03f92a9f0875
children 7c5c678e4164
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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796d150e45a9 No need to export PySTEntry_New, it is only used in symtable.c
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22 static PySTEntryObject *
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23 ste_new(struct symtable *st, identifier name, _Py_block_ty block,
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24 void *key, int lineno, int col_offset)
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25 {
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26 PySTEntryObject *ste = NULL;
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27 PyObject *k = NULL;
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28
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29 k = PyLong_FromVoidPtr(key);
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30 if (k == NULL)
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31 goto fail;
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32 ste = PyObject_New(PySTEntryObject, &PySTEntry_Type);
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33 if (ste == NULL) {
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34 Py_DECREF(k);
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35 goto fail;
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36 }
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37 ste->ste_table = st;
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38 ste->ste_id = k; /* ste owns reference to k */
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39
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40 ste->ste_name = name;
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41 Py_INCREF(name);
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42
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43 ste->ste_symbols = NULL;
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44 ste->ste_varnames = NULL;
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45 ste->ste_children = NULL;
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46
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47 ste->ste_symbols = PyDict_New();
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48 if (ste->ste_symbols == NULL)
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49 goto fail;
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51 ste->ste_varnames = PyList_New(0);
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52 if (ste->ste_varnames == NULL)
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53 goto fail;
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54
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55 ste->ste_children = PyList_New(0);
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56 if (ste->ste_children == NULL)
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57 goto fail;
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58
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59 ste->ste_directives = NULL;
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60
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61 ste->ste_type = block;
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62 ste->ste_unoptimized = 0;
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63 ste->ste_nested = 0;
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64 ste->ste_free = 0;
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65 ste->ste_varargs = 0;
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66 ste->ste_varkeywords = 0;
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67 ste->ste_opt_lineno = 0;
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68 ste->ste_opt_col_offset = 0;
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69 ste->ste_tmpname = 0;
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70 ste->ste_lineno = lineno;
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71 ste->ste_col_offset = col_offset;
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72
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73 if (st->st_cur != NULL &&
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74 (st->st_cur->ste_nested ||
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75 st->st_cur->ste_type == FunctionBlock))
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76 ste->ste_nested = 1;
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77 ste->ste_child_free = 0;
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78 ste->ste_generator = 0;
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79 ste->ste_returns_value = 0;
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80
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81 if (PyDict_SetItem(st->st_blocks, ste->ste_id, (PyObject *)ste) < 0)
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82 goto fail;
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83
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84 return ste;
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85 fail:
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86 Py_XDECREF(ste);
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87 return NULL;
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88 }
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89
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90 static PyObject *
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91 ste_repr(PySTEntryObject *ste)
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92 {
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93 return PyUnicode_FromFormat("<symtable entry %U(%ld), line %d>",
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94 ste->ste_name,
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95 PyLong_AS_LONG(ste->ste_id), ste->ste_lineno);
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96 }
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97
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98 static void
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99 ste_dealloc(PySTEntryObject *ste)
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100 {
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101 ste->ste_table = NULL;
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102 Py_XDECREF(ste->ste_id);
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103 Py_XDECREF(ste->ste_name);
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104 Py_XDECREF(ste->ste_symbols);
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105 Py_XDECREF(ste->ste_varnames);
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106 Py_XDECREF(ste->ste_children);
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107 Py_XDECREF(ste->ste_directives);
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108 PyObject_Del(ste);
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109 }
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110
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111 #define OFF(x) offsetof(PySTEntryObject, x)
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112
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113 static PyMemberDef ste_memberlist[] = {
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114 {"id", T_OBJECT, OFF(ste_id), READONLY},
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115 {"name", T_OBJECT, OFF(ste_name), READONLY},
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116 {"symbols", T_OBJECT, OFF(ste_symbols), READONLY},
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117 {"varnames", T_OBJECT, OFF(ste_varnames), READONLY},
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118 {"children", T_OBJECT, OFF(ste_children), READONLY},
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119 {"optimized",T_INT, OFF(ste_unoptimized), READONLY},
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120 {"nested", T_INT, OFF(ste_nested), READONLY},
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121 {"type", T_INT, OFF(ste_type), READONLY},
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122 {"lineno", T_INT, OFF(ste_lineno), READONLY},
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123 {NULL}
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124 };
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125
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126 PyTypeObject PySTEntry_Type = {
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127 PyVarObject_HEAD_INIT(&PyType_Type, 0)
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128 "symtable entry",
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129 sizeof(PySTEntryObject),
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130 0,
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131 (destructor)ste_dealloc, /* tp_dealloc */
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132 0, /* tp_print */
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133 0, /* tp_getattr */
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134 0, /* tp_setattr */
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135 0, /* tp_reserved */
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136 (reprfunc)ste_repr, /* tp_repr */
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137 0, /* tp_as_number */
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138 0, /* tp_as_sequence */
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139 0, /* tp_as_mapping */
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140 0, /* tp_hash */
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141 0, /* tp_call */
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142 0, /* tp_str */
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143 PyObject_GenericGetAttr, /* tp_getattro */
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144 0, /* tp_setattro */
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145 0, /* tp_as_buffer */
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146 Py_TPFLAGS_DEFAULT, /* tp_flags */
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147 0, /* tp_doc */
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148 0, /* tp_traverse */
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149 0, /* tp_clear */
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150 0, /* tp_richcompare */
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151 0, /* tp_weaklistoffset */
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152 0, /* tp_iter */
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153 0, /* tp_iternext */
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154 0, /* tp_methods */
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155 ste_memberlist, /* tp_members */
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156 0, /* tp_getset */
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157 0, /* tp_base */
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158 0, /* tp_dict */
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159 0, /* tp_descr_get */
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160 0, /* tp_descr_set */
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161 0, /* tp_dictoffset */
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162 0, /* tp_init */
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163 0, /* tp_alloc */
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164 0, /* tp_new */
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165 };
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166
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167 static int symtable_analyze(struct symtable *st);
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168 static int symtable_warn(struct symtable *st, char *msg, int lineno);
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169 static int symtable_enter_block(struct symtable *st, identifier name,
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170 _Py_block_ty block, void *ast, int lineno,
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171 int col_offset);
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172 static int symtable_exit_block(struct symtable *st, void *ast);
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173 static int symtable_visit_stmt(struct symtable *st, stmt_ty s);
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174 static int symtable_visit_expr(struct symtable *st, expr_ty s);
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175 static int symtable_visit_genexp(struct symtable *st, expr_ty s);
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176 static int symtable_visit_listcomp(struct symtable *st, expr_ty s);
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177 static int symtable_visit_setcomp(struct symtable *st, expr_ty s);
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178 static int symtable_visit_dictcomp(struct symtable *st, expr_ty s);
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179 static int symtable_visit_arguments(struct symtable *st, arguments_ty);
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180 static int symtable_visit_excepthandler(struct symtable *st, excepthandler_ty);
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181 static int symtable_visit_alias(struct symtable *st, alias_ty);
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182 static int symtable_visit_comprehension(struct symtable *st, comprehension_ty);
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183 static int symtable_visit_keyword(struct symtable *st, keyword_ty);
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184 static int symtable_visit_slice(struct symtable *st, slice_ty);
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185 static int symtable_visit_params(struct symtable *st, asdl_seq *args);
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186 static int symtable_visit_argannotations(struct symtable *st, asdl_seq *args);
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187 static int symtable_implicit_arg(struct symtable *st, int pos);
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188 static int symtable_visit_annotations(struct symtable *st, stmt_ty s);
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189 static int symtable_visit_withitem(struct symtable *st, withitem_ty item);
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190
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191
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192 static identifier top = NULL, lambda = NULL, genexpr = NULL,
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193 listcomp = NULL, setcomp = NULL, dictcomp = NULL,
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194 __class__ = NULL, __locals__ = NULL;
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195
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196 #define GET_IDENTIFIER(VAR) \
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197 ((VAR) ? (VAR) : ((VAR) = PyUnicode_InternFromString(# VAR)))
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198
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199 #define DUPLICATE_ARGUMENT \
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200 "duplicate argument '%U' in function definition"
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201
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202 static struct symtable *
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203 symtable_new(void)
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204 {
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205 struct symtable *st;
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206
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207 st = (struct symtable *)PyMem_Malloc(sizeof(struct symtable));
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208 if (st == NULL)
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209 return NULL;
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210
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211 st->st_filename = NULL;
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212 st->st_blocks = NULL;
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213
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214 if ((st->st_stack = PyList_New(0)) == NULL)
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215 goto fail;
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216 if ((st->st_blocks = PyDict_New()) == NULL)
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217 goto fail;
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218 st->st_cur = NULL;
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219 st->st_private = NULL;
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220 return st;
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221 fail:
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222 PySymtable_Free(st);
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223 return NULL;
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224 }
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225
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226 /* When compiling the use of C stack is probably going to be a lot
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227 lighter than when executing Python code but still can overflow
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228 and causing a Python crash if not checked (e.g. eval("()"*300000)).
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229 Using the current recursion limit for the compiler seems too
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230 restrictive (it caused at least one test to fail) so a factor is
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231 used to allow deeper recursion when compiling an expression.
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232
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233 Using a scaling factor means this should automatically adjust when
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234 the recursion limit is adjusted for small or large C stack allocations.
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235 */
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236 #define COMPILER_STACK_FRAME_SCALE 3
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237
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238 struct symtable *
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239 PySymtable_Build(mod_ty mod, const char *filename, PyFutureFeatures *future)
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240 {
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241 struct symtable *st = symtable_new();
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242 asdl_seq *seq;
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243 int i;
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244 PyThreadState *tstate;
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245
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246 if (st == NULL)
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247 return st;
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248 st->st_filename = filename;
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249 st->st_future = future;
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250
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251 /* Setup recursion depth check counters */
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252 tstate = PyThreadState_GET();
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253 if (!tstate) {
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254 PySymtable_Free(st);
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255 return NULL;
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256 }
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257 st->recursion_depth = tstate->recursion_depth * COMPILER_STACK_FRAME_SCALE;
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258 st->recursion_limit = Py_GetRecursionLimit() * COMPILER_STACK_FRAME_SCALE;
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259
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260 /* Make the initial symbol information gathering pass */
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261 if (!GET_IDENTIFIER(top) ||
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262 !symtable_enter_block(st, top, ModuleBlock, (void *)mod, 0, 0)) {
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263 PySymtable_Free(st);
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264 return NULL;
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265 }
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266
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267 st->st_top = st->st_cur;
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268 st->st_cur->ste_unoptimized = OPT_TOPLEVEL;
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269 switch (mod->kind) {
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270 case Module_kind:
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271 seq = mod->v.Module.body;
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272 for (i = 0; i < asdl_seq_LEN(seq); i++)
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273 if (!symtable_visit_stmt(st,
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274 (stmt_ty)asdl_seq_GET(seq, i)))
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275 goto error;
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276 break;
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277 case Expression_kind:
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278 if (!symtable_visit_expr(st, mod->v.Expression.body))
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279 goto error;
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280 break;
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281 case Interactive_kind:
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282 seq = mod->v.Interactive.body;
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283 for (i = 0; i < asdl_seq_LEN(seq); i++)
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284 if (!symtable_visit_stmt(st,
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285 (stmt_ty)asdl_seq_GET(seq, i)))
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286 goto error;
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287 break;
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288 case Suite_kind:
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289 PyErr_SetString(PyExc_RuntimeError,
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290 "this compiler does not handle Suites");
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291 goto error;
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292 }
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293 if (!symtable_exit_block(st, (void *)mod)) {
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294 PySymtable_Free(st);
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295 return NULL;
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296 }
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297 /* Make the second symbol analysis pass */
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298 if (symtable_analyze(st))
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299 return st;
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300 PySymtable_Free(st);
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301 return NULL;
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302 error:
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303 (void) symtable_exit_block(st, (void *)mod);
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304 PySymtable_Free(st);
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305 return NULL;
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306 }
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307
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308 void
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309 PySymtable_Free(struct symtable *st)
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310 {
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311 Py_XDECREF(st->st_blocks);
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312 Py_XDECREF(st->st_stack);
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313 PyMem_Free((void *)st);
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314 }
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315
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316 PySTEntryObject *
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317 PySymtable_Lookup(struct symtable *st, void *key)
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318 {
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319 PyObject *k, *v;
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320
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321 k = PyLong_FromVoidPtr(key);
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322 if (k == NULL)
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323 return NULL;
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324 v = PyDict_GetItem(st->st_blocks, k);
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325 if (v) {
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326 assert(PySTEntry_Check(v));
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327 Py_INCREF(v);
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328 }
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329 else {
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330 PyErr_SetString(PyExc_KeyError,
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331 "unknown symbol table entry");
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332 }
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333
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334 Py_DECREF(k);
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335 return (PySTEntryObject *)v;
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336 }
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337
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338 int
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339 PyST_GetScope(PySTEntryObject *ste, PyObject *name)
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340 {
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341 PyObject *v = PyDict_GetItem(ste->ste_symbols, name);
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342 if (!v)
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343 return 0;
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344 assert(PyLong_Check(v));
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345 return (PyLong_AS_LONG(v) >> SCOPE_OFFSET) & SCOPE_MASK;
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346 }
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347
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348 static int
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349 error_at_directive(PySTEntryObject *ste, PyObject *name)
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350 {
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351 Py_ssize_t i;
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352 PyObject *data;
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353 assert(ste->ste_directives);
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354 for (i = 0; ; i++) {
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355 data = PyList_GET_ITEM(ste->ste_directives, i);
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356 assert(PyTuple_CheckExact(data));
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357 if (PyTuple_GET_ITEM(data, 0) == name)
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358 break;
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359 }
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360 PyErr_SyntaxLocationEx(ste->ste_table->st_filename,
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361 PyLong_AsLong(PyTuple_GET_ITEM(data, 1)),
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362 PyLong_AsLong(PyTuple_GET_ITEM(data, 2)));
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363 return 0;
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364 }
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365
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366
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367 /* Analyze raw symbol information to determine scope of each name.
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368
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369 The next several functions are helpers for symtable_analyze(),
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370 which determines whether a name is local, global, or free. In addition,
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371 it determines which local variables are cell variables; they provide
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372 bindings that are used for free variables in enclosed blocks.
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373
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374 There are also two kinds of global variables, implicit and explicit. An
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375 explicit global is declared with the global statement. An implicit
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376 global is a free variable for which the compiler has found no binding
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377 in an enclosing function scope. The implicit global is either a global
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378 or a builtin. Python's module and class blocks use the xxx_NAME opcodes
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379 to handle these names to implement slightly odd semantics. In such a
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380 block, the name is treated as global until it is assigned to; then it
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381 is treated as a local.
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382
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383 The symbol table requires two passes to determine the scope of each name.
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384 The first pass collects raw facts from the AST via the symtable_visit_*
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385 functions: the name is a parameter here, the name is used but not defined
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386 here, etc. The second pass analyzes these facts during a pass over the
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387 PySTEntryObjects created during pass 1.
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388
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389 When a function is entered during the second pass, the parent passes
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390 the set of all name bindings visible to its children. These bindings
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391 are used to determine if non-local variables are free or implicit globals.
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392 Names which are explicitly declared nonlocal must exist in this set of
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393 visible names - if they do not, a syntax error is raised. After doing
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394 the local analysis, it analyzes each of its child blocks using an
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395 updated set of name bindings.
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396
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397 The children update the free variable set. If a local variable is added to
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398 the free variable set by the child, the variable is marked as a cell. The
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399 function object being defined must provide runtime storage for the variable
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400 that may outlive the function's frame. Cell variables are removed from the
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401 free set before the analyze function returns to its parent.
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402
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403 During analysis, the names are:
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404 symbols: dict mapping from symbol names to flag values (including offset scope values)
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405 scopes: dict mapping from symbol names to scope values (no offset)
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406 local: set of all symbol names local to the current scope
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407 bound: set of all symbol names local to a containing function scope
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408 free: set of all symbol names referenced but not bound in child scopes
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409 global: set of all symbol names explicitly declared as global
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410 */
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411
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412 #define SET_SCOPE(DICT, NAME, I) { \
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413 PyObject *o = PyLong_FromLong(I); \
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414 if (!o) \
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415 return 0; \
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416 if (PyDict_SetItem((DICT), (NAME), o) < 0) { \
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417 Py_DECREF(o); \
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418 return 0; \
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419 } \
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420 Py_DECREF(o); \
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421 }
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422
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423 /* Decide on scope of name, given flags.
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424
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425 The namespace dictionaries may be modified to record information
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426 about the new name. For example, a new global will add an entry to
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427 global. A name that was global can be changed to local.
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428 */
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429
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430 static int
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431 analyze_name(PySTEntryObject *ste, PyObject *scopes, PyObject *name, long flags,
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432 PyObject *bound, PyObject *local, PyObject *free,
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433 PyObject *global)
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434 {
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435 if (flags & DEF_GLOBAL) {
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436 if (flags & DEF_PARAM) {
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437 PyErr_Format(PyExc_SyntaxError,
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438 "name '%U' is parameter and global",
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439 name);
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440 return error_at_directive(ste, name);
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441 }
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442 if (flags & DEF_NONLOCAL) {
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443 PyErr_Format(PyExc_SyntaxError,
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444 "name '%U' is nonlocal and global",
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445 name);
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446 return error_at_directive(ste, name);
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447 }
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448 SET_SCOPE(scopes, name, GLOBAL_EXPLICIT);
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449 if (PySet_Add(global, name) < 0)
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450 return 0;
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451 if (bound && (PySet_Discard(bound, name) < 0))
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452 return 0;
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453 return 1;
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454 }
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455 if (flags & DEF_NONLOCAL) {
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456 if (flags & DEF_PARAM) {
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457 PyErr_Format(PyExc_SyntaxError,
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458 "name '%U' is parameter and nonlocal",
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459 name);
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460 return error_at_directive(ste, name);
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461 }
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462 if (!bound) {
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463 PyErr_Format(PyExc_SyntaxError,
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464 "nonlocal declaration not allowed at module level");
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465 return error_at_directive(ste, name);
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466 }
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467 if (!PySet_Contains(bound, name)) {
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468 PyErr_Format(PyExc_SyntaxError,
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469 "no binding for nonlocal '%U' found",
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470 name);
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471
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472 return error_at_directive(ste, name);
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473 }
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474 SET_SCOPE(scopes, name, FREE);
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475 ste->ste_free = 1;
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476 return PySet_Add(free, name) >= 0;
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477 }
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478 if (flags & DEF_BOUND) {
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479 SET_SCOPE(scopes, name, LOCAL);
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480 if (PySet_Add(local, name) < 0)
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481 return 0;
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482 if (PySet_Discard(global, name) < 0)
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483 return 0;
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484 return 1;
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485 }
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486 /* If an enclosing block has a binding for this name, it
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487 is a free variable rather than a global variable.
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488 Note that having a non-NULL bound implies that the block
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489 is nested.
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490 */
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491 if (bound && PySet_Contains(bound, name)) {
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492 SET_SCOPE(scopes, name, FREE);
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493 ste->ste_free = 1;
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494 return PySet_Add(free, name) >= 0;
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495 }
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496 /* If a parent has a global statement, then call it global
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497 explicit? It could also be global implicit.
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498 */
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499 if (global && PySet_Contains(global, name)) {
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500 SET_SCOPE(scopes, name, GLOBAL_IMPLICIT);
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501 return 1;
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502 }
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503 if (ste->ste_nested)
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504 ste->ste_free = 1;
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505 SET_SCOPE(scopes, name, GLOBAL_IMPLICIT);
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506 return 1;
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507 }
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508
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509 #undef SET_SCOPE
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510
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511 /* If a name is defined in free and also in locals, then this block
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512 provides the binding for the free variable. The name should be
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513 marked CELL in this block and removed from the free list.
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514
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parents: 32121
diff changeset
515 Note that the current block's free variables are included in free.
1c4d192f1568 Merge ast-branch to head
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diff changeset
516 That's safe because no name can be free and local in the same scope.
42084
229c28cb9afb Merged revisions 55817-55961 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42045
diff changeset
517
43708
c34720777cb6 Bug #1356: Avoid using the C99 keyword 'restrict'.
Martin v. Löwis <martin@v.loewis.de>
parents: 43102
diff changeset
518 The 'restricted' argument may be set to a string to restrict the analysis
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Guido van Rossum <guido@python.org>
parents: 42045
diff changeset
519 to the one variable whose name equals that string (e.g. "__class__").
35742
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diff changeset
520 */
1c4d192f1568 Merge ast-branch to head
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521
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diff changeset
522 static int
43708
c34720777cb6 Bug #1356: Avoid using the C99 keyword 'restrict'.
Martin v. Löwis <martin@v.loewis.de>
parents: 43102
diff changeset
523 analyze_cells(PyObject *scopes, PyObject *free, const char *restricted)
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
524 {
61467
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525 PyObject *name, *v, *v_cell;
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diff changeset
526 int success = 0;
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diff changeset
527 Py_ssize_t pos = 0;
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1c4d192f1568 Merge ast-branch to head
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528
61467
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diff changeset
529 v_cell = PyLong_FromLong(CELL);
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diff changeset
530 if (!v_cell)
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parents: 57378
diff changeset
531 return 0;
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diff changeset
532 while (PyDict_Next(scopes, &pos, &name, &v)) {
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
533 long scope;
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parents: 57378
diff changeset
534 assert(PyLong_Check(v));
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535 scope = PyLong_AS_LONG(v);
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536 if (scope != LOCAL)
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parents: 57378
diff changeset
537 continue;
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538 if (!PySet_Contains(free, name))
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539 continue;
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540 if (restricted != NULL &&
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diff changeset
541 PyUnicode_CompareWithASCIIString(name, restricted))
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542 continue;
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parents: 57378
diff changeset
543 /* Replace LOCAL with CELL for this name, and remove
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544 from free. It is safe to replace the value of name
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diff changeset
545 in the dict, because it will not cause a resize.
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546 */
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diff changeset
547 if (PyDict_SetItem(scopes, name, v_cell) < 0)
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diff changeset
548 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
549 if (PySet_Discard(free, name) < 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
550 goto error;
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parents: 57378
diff changeset
551 }
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552 success = 1;
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
553 error:
61467
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diff changeset
554 Py_DECREF(v_cell);
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diff changeset
555 return success;
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
556 }
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
557
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
558 /* Check for illegal statements in unoptimized namespaces */
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
559 static int
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
560 check_unoptimized(const PySTEntryObject* ste) {
61467
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561 const char* trailer;
35742
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562
61467
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diff changeset
563 if (ste->ste_type != FunctionBlock || !ste->ste_unoptimized
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
564 || !(ste->ste_free || ste->ste_child_free))
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diff changeset
565 return 1;
35742
1c4d192f1568 Merge ast-branch to head
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566
61467
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diff changeset
567 trailer = (ste->ste_child_free ?
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
568 "contains a nested function with free variables" :
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
569 "is a nested function");
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
570
61467
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diff changeset
571 switch (ste->ste_unoptimized) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
572 case OPT_TOPLEVEL: /* import * at top-level is fine */
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diff changeset
573 return 1;
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diff changeset
574 case OPT_IMPORT_STAR:
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diff changeset
575 PyErr_Format(PyExc_SyntaxError,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
576 "import * is not allowed in function '%U' because it %s",
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
577 ste->ste_name, trailer);
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diff changeset
578 break;
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diff changeset
579 }
35742
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diff changeset
580
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
581 PyErr_SyntaxLocationEx(ste->ste_table->st_filename, ste->ste_opt_lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
582 ste->ste_opt_col_offset);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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583 return 0;
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584 }
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diff changeset
585
61467
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diff changeset
586 /* Enter the final scope information into the ste_symbols dict.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
587 *
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diff changeset
588 * All arguments are dicts. Modifies symbols, others are read-only.
1c4d192f1568 Merge ast-branch to head
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diff changeset
589 */
1c4d192f1568 Merge ast-branch to head
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diff changeset
590 static int
61467
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diff changeset
591 update_symbols(PyObject *symbols, PyObject *scopes,
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36739
diff changeset
592 PyObject *bound, PyObject *free, int classflag)
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
593 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
594 PyObject *name = NULL, *itr = NULL;
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diff changeset
595 PyObject *v = NULL, *v_scope = NULL, *v_new = NULL, *v_free = NULL;
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diff changeset
596 Py_ssize_t pos = 0;
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diff changeset
597
61467
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diff changeset
598 /* Update scope information for all symbols in this scope */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
599 while (PyDict_Next(symbols, &pos, &name, &v)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
600 long scope, flags;
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diff changeset
601 assert(PyLong_Check(v));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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602 flags = PyLong_AS_LONG(v);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
603 v_scope = PyDict_GetItem(scopes, name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
604 assert(v_scope && PyLong_Check(v_scope));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
605 scope = PyLong_AS_LONG(v_scope);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
606 flags |= (scope << SCOPE_OFFSET);
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parents: 57378
diff changeset
607 v_new = PyLong_FromLong(flags);
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diff changeset
608 if (!v_new)
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diff changeset
609 return 0;
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parents: 57378
diff changeset
610 if (PyDict_SetItem(symbols, name, v_new) < 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
611 Py_DECREF(v_new);
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diff changeset
612 return 0;
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diff changeset
613 }
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614 Py_DECREF(v_new);
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diff changeset
615 }
35742
1c4d192f1568 Merge ast-branch to head
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616
61467
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diff changeset
617 /* Record not yet resolved free variables from children (if any) */
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618 v_free = PyLong_FromLong(FREE << SCOPE_OFFSET);
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diff changeset
619 if (!v_free)
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diff changeset
620 return 0;
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621
61467
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diff changeset
622 itr = PyObject_GetIter(free);
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diff changeset
623 if (!itr)
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624 goto error;
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625
61467
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diff changeset
626 while ((name = PyIter_Next(itr))) {
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diff changeset
627 v = PyDict_GetItem(symbols, name);
41464
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
628
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
629 /* Handle symbol that already exists in this scope */
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diff changeset
630 if (v) {
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diff changeset
631 /* Handle a free variable in a method of
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diff changeset
632 the class that has the same name as a local
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diff changeset
633 or global in the class scope.
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diff changeset
634 */
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diff changeset
635 if (classflag &&
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diff changeset
636 PyLong_AS_LONG(v) & (DEF_BOUND | DEF_GLOBAL)) {
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diff changeset
637 long flags = PyLong_AS_LONG(v) | DEF_FREE_CLASS;
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diff changeset
638 v_new = PyLong_FromLong(flags);
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diff changeset
639 if (!v_new) {
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diff changeset
640 goto error;
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parents: 57378
diff changeset
641 }
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diff changeset
642 if (PyDict_SetItem(symbols, name, v_new) < 0) {
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diff changeset
643 Py_DECREF(v_new);
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diff changeset
644 goto error;
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diff changeset
645 }
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diff changeset
646 Py_DECREF(v_new);
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diff changeset
647 }
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diff changeset
648 /* It's a cell, or already free in this scope */
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diff changeset
649 Py_DECREF(name);
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parents: 57378
diff changeset
650 continue;
35742
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Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
651 }
61467
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diff changeset
652 /* Handle global symbol */
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parents: 57378
diff changeset
653 if (!PySet_Contains(bound, name)) {
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parents: 57378
diff changeset
654 Py_DECREF(name);
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parents: 57378
diff changeset
655 continue; /* it's a global */
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parents: 57378
diff changeset
656 }
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diff changeset
657 /* Propagate new free symbol up the lexical stack */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
658 if (PyDict_SetItem(symbols, name, v_free) < 0) {
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
659 goto error;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
660 }
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parents: 57378
diff changeset
661 Py_DECREF(name);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
662 }
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parents: 57378
diff changeset
663 Py_DECREF(itr);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
664 Py_DECREF(v_free);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
665 return 1;
41464
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
666 error:
61467
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diff changeset
667 Py_XDECREF(v_free);
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parents: 57378
diff changeset
668 Py_XDECREF(itr);
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parents: 57378
diff changeset
669 Py_XDECREF(name);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
670 return 0;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
671 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
672
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
673 /* Make final symbol table decisions for block of ste.
52528
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Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
674
35742
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diff changeset
675 Arguments:
1c4d192f1568 Merge ast-branch to head
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diff changeset
676 ste -- current symtable entry (input/output)
52528
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Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
677 bound -- set of variables bound in enclosing scopes (input). bound
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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diff changeset
678 is NULL for module blocks.
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
679 free -- set of free variables in enclosed scopes (output)
1c4d192f1568 Merge ast-branch to head
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diff changeset
680 globals -- set of declared global variables in enclosing scopes (input)
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
681
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
682 The implementation uses two mutually recursive functions,
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
683 analyze_block() and analyze_child_block(). analyze_block() is
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
684 responsible for analyzing the individual names defined in a block.
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
685 analyze_child_block() prepares temporary namespace dictionaries
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
686 used to evaluated nested blocks.
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
687
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
688 The two functions exist because a child block should see the name
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
689 bindings of its enclosing blocks, but those bindings should not
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
690 propagate back to a parent block.
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
691 */
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
692
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
693 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
694 analyze_child_block(PySTEntryObject *entry, PyObject *bound, PyObject *free,
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
695 PyObject *global, PyObject* child_free);
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
696
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
697 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
698 analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
699 PyObject *global)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
700 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
701 PyObject *name, *v, *local = NULL, *scopes = NULL, *newbound = NULL;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
702 PyObject *newglobal = NULL, *newfree = NULL, *allfree = NULL;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
703 PyObject *temp;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
704 int i, success = 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
705 Py_ssize_t pos = 0;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
706
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
707 local = PySet_New(NULL); /* collect new names bound in block */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
708 if (!local)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
709 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
710 scopes = PyDict_New(); /* collect scopes defined for each name */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
711 if (!scopes)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
712 goto error;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
713
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
714 /* Allocate new global and bound variable dictionaries. These
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
715 dictionaries hold the names visible in nested blocks. For
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
716 ClassBlocks, the bound and global names are initialized
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
717 before analyzing names, because class bindings aren't
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
718 visible in methods. For other blocks, they are initialized
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
719 after names are analyzed.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
720 */
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
721
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
722 /* TODO(jhylton): Package these dicts in a struct so that we
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
723 can write reasonable helper functions?
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
724 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
725 newglobal = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
726 if (!newglobal)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
727 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
728 newfree = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
729 if (!newfree)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
730 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
731 newbound = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
732 if (!newbound)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
733 goto error;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
734
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
735 /* Class namespace has no effect on names visible in
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
736 nested functions, so populate the global and bound
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
737 sets to be passed to child blocks before analyzing
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
738 this one.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
739 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
740 if (ste->ste_type == ClassBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
741 /* Pass down known globals */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
742 temp = PyNumber_InPlaceOr(newglobal, global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
743 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
744 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
745 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
746 /* Pass down previously bound symbols */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
747 if (bound) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
748 temp = PyNumber_InPlaceOr(newbound, bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
749 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
750 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
751 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
752 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
753 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
754
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
755 while (PyDict_Next(ste->ste_symbols, &pos, &name, &v)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
756 long flags = PyLong_AS_LONG(v);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
757 if (!analyze_name(ste, scopes, name, flags,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
758 bound, local, free, global))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
759 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
760 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
761
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
762 /* Populate global and bound sets to be passed to children. */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
763 if (ste->ste_type != ClassBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
764 /* Add function locals to bound set */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
765 if (ste->ste_type == FunctionBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
766 temp = PyNumber_InPlaceOr(newbound, local);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
767 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
768 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
769 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
770 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
771 /* Pass down previously bound symbols */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
772 if (bound) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
773 temp = PyNumber_InPlaceOr(newbound, bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
774 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
775 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
776 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
777 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
778 /* Pass down known globals */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
779 temp = PyNumber_InPlaceOr(newglobal, global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
780 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
781 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
782 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
783 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
784 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
785 /* Special-case __class__ */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
786 if (!GET_IDENTIFIER(__class__))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
787 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
788 assert(PySet_Contains(local, __class__) == 1);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
789 if (PySet_Add(newbound, __class__) < 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
790 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
791 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
792
69231
b6fe63c914e4 Issue #9904: fix and clarify some comments + fix indentation in symtable code
Eli Bendersky <eliben@gmail.com>
parents: 68257
diff changeset
793 /* Recursively call analyze_child_block() on each child block.
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
794
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
795 newbound, newglobal now contain the names visible in
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
796 nested blocks. The free variables in the children will
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
797 be collected in allfree.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
798 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
799 allfree = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
800 if (!allfree)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
801 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
802 for (i = 0; i < PyList_GET_SIZE(ste->ste_children); ++i) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
803 PyObject *c = PyList_GET_ITEM(ste->ste_children, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
804 PySTEntryObject* entry;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
805 assert(c && PySTEntry_Check(c));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
806 entry = (PySTEntryObject*)c;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
807 if (!analyze_child_block(entry, newbound, newfree, newglobal,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
808 allfree))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
809 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
810 /* Check if any children have free variables */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
811 if (entry->ste_free || entry->ste_child_free)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
812 ste->ste_child_free = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
813 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
814
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
815 temp = PyNumber_InPlaceOr(newfree, allfree);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
816 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
817 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
818 Py_DECREF(temp);
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
819
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
820 /* Check if any local variables must be converted to cell variables */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
821 if (ste->ste_type == FunctionBlock && !analyze_cells(scopes, newfree,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
822 NULL))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
823 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
824 else if (ste->ste_type == ClassBlock && !analyze_cells(scopes, newfree,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
825 "__class__"))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
826 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
827 /* Records the results of the analysis in the symbol table entry */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
828 if (!update_symbols(ste->ste_symbols, scopes, bound, newfree,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
829 ste->ste_type == ClassBlock))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
830 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
831 if (!check_unoptimized(ste))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
832 goto error;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
833
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
834 temp = PyNumber_InPlaceOr(free, newfree);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
835 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
836 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
837 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
838 success = 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
839 error:
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
840 Py_XDECREF(scopes);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
841 Py_XDECREF(local);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
842 Py_XDECREF(newbound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
843 Py_XDECREF(newglobal);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
844 Py_XDECREF(newfree);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
845 Py_XDECREF(allfree);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
846 if (!success)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
847 assert(PyErr_Occurred());
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
848 return success;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
849 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
850
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
851 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
852 analyze_child_block(PySTEntryObject *entry, PyObject *bound, PyObject *free,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
853 PyObject *global, PyObject* child_free)
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
854 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
855 PyObject *temp_bound = NULL, *temp_global = NULL, *temp_free = NULL;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
856 PyObject *temp;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
857
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
858 /* Copy the bound and global dictionaries.
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
859
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
860 These dictionary are used by all blocks enclosed by the
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
861 current block. The analyze_block() call modifies these
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
862 dictionaries.
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
863
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
864 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
865 temp_bound = PySet_New(bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
866 if (!temp_bound)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
867 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
868 temp_free = PySet_New(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
869 if (!temp_free)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
870 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
871 temp_global = PySet_New(global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
872 if (!temp_global)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
873 goto error;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
874
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
875 if (!analyze_block(entry, temp_bound, temp_free, temp_global))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
876 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
877 temp = PyNumber_InPlaceOr(child_free, temp_free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
878 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
879 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
880 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
881 Py_DECREF(temp_bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
882 Py_DECREF(temp_free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
883 Py_DECREF(temp_global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
884 return 1;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
885 error:
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
886 Py_XDECREF(temp_bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
887 Py_XDECREF(temp_free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
888 Py_XDECREF(temp_global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
889 return 0;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
890 }
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
891
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
892 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
893 symtable_analyze(struct symtable *st)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
894 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
895 PyObject *free, *global;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
896 int r;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
897
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
898 free = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
899 if (!free)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
900 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
901 global = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
902 if (!global) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
903 Py_DECREF(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
904 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
905 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
906 r = analyze_block(st->st_top, NULL, free, global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
907 Py_DECREF(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
908 Py_DECREF(global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
909 return r;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
910 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
911
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
912
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
913 static int
36089
4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations.
Neal Norwitz <nnorwitz@gmail.com>
parents: 35939
diff changeset
914 symtable_warn(struct symtable *st, char *msg, int lineno)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
915 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
916 if (PyErr_WarnExplicit(PyExc_SyntaxWarning, msg, st->st_filename,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
917 lineno, NULL, NULL) < 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
918 if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
919 PyErr_SetString(PyExc_SyntaxError, msg);
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
920 PyErr_SyntaxLocationEx(st->st_filename, st->st_cur->ste_lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
921 st->st_cur->ste_col_offset);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
922 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
923 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
924 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
925 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
926 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
927
48725
40c07a61e1c2 Merged revisions 65715,65724,65726,65732,65736-65739,65775 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 48660
diff changeset
928 /* symtable_enter_block() gets a reference via ste_new.
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
929 This reference is released when the block is exited, via the DECREF
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
930 in symtable_exit_block().
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
931 */
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
932
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
933 static int
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
934 symtable_exit_block(struct symtable *st, void *ast)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
935 {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
936 Py_ssize_t size;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
937
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
938 st->st_cur = NULL;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
939 size = PyList_GET_SIZE(st->st_stack);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
940 if (size) {
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
941 if (PyList_SetSlice(st->st_stack, size - 1, size, NULL) < 0)
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
942 return 0;
71129
6b3872a11299 fix possibily uninitialized memory usage (closes #12474)
Benjamin Peterson <benjamin@python.org>
parents: 71087
diff changeset
943 if (--size)
6b3872a11299 fix possibily uninitialized memory usage (closes #12474)
Benjamin Peterson <benjamin@python.org>
parents: 71087
diff changeset
944 st->st_cur = (PySTEntryObject *)PyList_GET_ITEM(st->st_stack, size - 1);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
945 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
946 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
947 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
948
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
949 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
950 symtable_enter_block(struct symtable *st, identifier name, _Py_block_ty block,
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
951 void *ast, int lineno, int col_offset)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
952 {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
953 PySTEntryObject *prev = NULL, *ste;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
954
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
955 ste = ste_new(st, name, block, ast, lineno, col_offset);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
956 if (ste == NULL)
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
957 return 0;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
958 if (PyList_Append(st->st_stack, (PyObject *)ste) < 0) {
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
959 Py_DECREF(ste);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
960 return 0;
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
961 }
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
962 prev = st->st_cur;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
963 /* The entry is owned by the stack. Borrow it for st_cur. */
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
964 Py_DECREF(ste);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
965 st->st_cur = ste;
65393
3618d9d7902d Merged revisions 85562 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 61467
diff changeset
966 if (block == ModuleBlock)
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
967 st->st_global = st->st_cur->ste_symbols;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
968 if (prev) {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
969 if (PyList_Append(prev->ste_children, (PyObject *)ste) < 0) {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
970 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
971 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
972 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
973 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
974 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
975
36231
d3f4c467e439 Fix icc warnings: conversion from "long" to "int" may lose significant bits
Neal Norwitz <nnorwitz@gmail.com>
parents: 36226
diff changeset
976 static long
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
977 symtable_lookup(struct symtable *st, PyObject *name)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
978 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
979 PyObject *o;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
980 PyObject *mangled = _Py_Mangle(st->st_private, name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
981 if (!mangled)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
982 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
983 o = PyDict_GetItem(st->st_cur->ste_symbols, mangled);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
984 Py_DECREF(mangled);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
985 if (!o)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
986 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
987 return PyLong_AsLong(o);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
988 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
989
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
990 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
991 symtable_add_def(struct symtable *st, PyObject *name, int flag)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
992 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
993 PyObject *o;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
994 PyObject *dict;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
995 long val;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
996 PyObject *mangled = _Py_Mangle(st->st_private, name);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
997
40965
30e5cb3a55ac Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 40898
diff changeset
998
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
999 if (!mangled)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1000 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1001 dict = st->st_cur->ste_symbols;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1002 if ((o = PyDict_GetItem(dict, mangled))) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1003 val = PyLong_AS_LONG(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1004 if ((flag & DEF_PARAM) && (val & DEF_PARAM)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1005 /* Is it better to use 'mangled' or 'name' here? */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1006 PyErr_Format(PyExc_SyntaxError, DUPLICATE_ARGUMENT, name);
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1007 PyErr_SyntaxLocationEx(st->st_filename,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1008 st->st_cur->ste_lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1009 st->st_cur->ste_col_offset);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1010 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1011 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1012 val |= flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1013 } else
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1014 val = flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1015 o = PyLong_FromLong(val);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1016 if (o == NULL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1017 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1018 if (PyDict_SetItem(dict, mangled, o) < 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1019 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1020 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1021 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1022 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1023
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1024 if (flag & DEF_PARAM) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1025 if (PyList_Append(st->st_cur->ste_varnames, mangled) < 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1026 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1027 } else if (flag & DEF_GLOBAL) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1028 /* XXX need to update DEF_GLOBAL for other flags too;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1029 perhaps only DEF_FREE_GLOBAL */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1030 val = flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1031 if ((o = PyDict_GetItem(st->st_global, mangled))) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1032 val |= PyLong_AS_LONG(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1033 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1034 o = PyLong_FromLong(val);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1035 if (o == NULL)
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1036 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1037 if (PyDict_SetItem(st->st_global, mangled, o) < 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1038 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1039 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1040 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1041 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1042 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1043 Py_DECREF(mangled);
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1044 return 1;
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1045
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1046 error:
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1047 Py_DECREF(mangled);
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1048 return 0;
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1049 }
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1050
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1051 /* VISIT, VISIT_SEQ and VIST_SEQ_TAIL take an ASDL type as their second argument.
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1052 They use the ASDL name to synthesize the name of the C type and the visit
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1053 function.
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1054
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1055 VISIT_SEQ_TAIL permits the start of an ASDL sequence to be skipped, which is
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1056 useful if the first node in the sequence requires special treatment.
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1057
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1058 VISIT_QUIT macro returns the specified value exiting from the function but
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1059 first adjusts current recursion counter depth.
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1060 */
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1061
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1062 #define VISIT_QUIT(ST, X) \
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1063 return --(ST)->recursion_depth,(X)
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1064
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1065 #define VISIT(ST, TYPE, V) \
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1066 if (!symtable_visit_ ## TYPE((ST), (V))) \
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1067 VISIT_QUIT((ST), 0);
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1068
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1069 #define VISIT_SEQ(ST, TYPE, SEQ) { \
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1070 int i; \
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1071 asdl_seq *seq = (SEQ); /* avoid variable capture */ \
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1072 for (i = 0; i < asdl_seq_LEN(seq); i++) { \
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1073 TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, i); \
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1074 if (!symtable_visit_ ## TYPE((ST), elt)) \
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1075 VISIT_QUIT((ST), 0); \
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1076 } \
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1077 }
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1078
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1079 #define VISIT_SEQ_TAIL(ST, TYPE, SEQ, START) { \
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1080 int i; \
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1081 asdl_seq *seq = (SEQ); /* avoid variable capture */ \
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1082 for (i = (START); i < asdl_seq_LEN(seq); i++) { \
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1083 TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, i); \
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1084 if (!symtable_visit_ ## TYPE((ST), elt)) \
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1085 VISIT_QUIT((ST), 0); \
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1086 } \
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1087 }
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1088
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1089 #define VISIT_KWONLYDEFAULTS(ST, KW_DEFAULTS) { \
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1090 int i = 0; \
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1091 asdl_seq *seq = (KW_DEFAULTS); /* avoid variable capture */ \
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1092 for (i = 0; i < asdl_seq_LEN(seq); i++) { \
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1093 expr_ty elt = (expr_ty)asdl_seq_GET(seq, i); \
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1094 if (!elt) continue; /* can be NULL */ \
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1095 if (!symtable_visit_expr((ST), elt)) \
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1096 VISIT_QUIT((ST), 0); \
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1097 } \
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1098 }
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1099
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1100 static int
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1101 symtable_new_tmpname(struct symtable *st)
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1102 {
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1103 char tmpname[256];
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1104 identifier tmp;
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1105
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1106 PyOS_snprintf(tmpname, sizeof(tmpname), "_[%d]",
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1107 ++st->st_cur->ste_tmpname);
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1108 tmp = PyUnicode_InternFromString(tmpname);
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1109 if (!tmp)
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1110 return 0;
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1111 if (!symtable_add_def(st, tmp, DEF_LOCAL))
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1112 return 0;
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1113 Py_DECREF(tmp);
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1114 return 1;
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1115 }
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1116
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1117
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1118 static int
80147
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1119 symtable_record_directive(struct symtable *st, identifier name, stmt_ty s)
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1120 {
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1121 PyObject *data;
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1122 int res;
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1123 if (!st->st_cur->ste_directives) {
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1124 st->st_cur->ste_directives = PyList_New(0);
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1125 if (!st->st_cur->ste_directives)
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1126 return 0;
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1127 }
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1128 data = Py_BuildValue("(Oii)", name, s->lineno, s->col_offset);
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1129 if (!data)
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1130 return 0;
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1131 res = PyList_Append(st->st_cur->ste_directives, data);
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1132 Py_DECREF(data);
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1133 return res == 0;
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1134 }
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1135
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1136
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1137 static int
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1138 symtable_visit_stmt(struct symtable *st, stmt_ty s)
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1139 {
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1140 if (++st->recursion_depth > st->recursion_limit) {
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1141 PyErr_SetString(PyExc_RuntimeError,
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1142 "maximum recursion depth exceeded during compilation");
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1143 VISIT_QUIT(st, 0);
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1144 }
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1145 switch (s->kind) {
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1146 case FunctionDef_kind:
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1147 if (!symtable_add_def(st, s->v.FunctionDef.name, DEF_LOCAL))
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1148 VISIT_QUIT(st, 0);
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1149 if (s->v.FunctionDef.args->defaults)
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1150 VISIT_SEQ(st, expr, s->v.FunctionDef.args->defaults);
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1151 if (s->v.FunctionDef.args->kw_defaults)
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1152 VISIT_KWONLYDEFAULTS(st,
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1153 s->v.FunctionDef.args->kw_defaults);
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1154 if (!symtable_visit_annotations(st, s))
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1155 VISIT_QUIT(st, 0);
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1156 if (s->v.FunctionDef.decorator_list)
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1157 VISIT_SEQ(st, expr, s->v.FunctionDef.decorator_list);
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1158 if (!symtable_enter_block(st, s->v.FunctionDef.name,
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1159 FunctionBlock, (void *)s, s->lineno,
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1160 s->col_offset))
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1161 VISIT_QUIT(st, 0);
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1162 VISIT(st, arguments, s->v.FunctionDef.args);
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1163 VISIT_SEQ(st, stmt, s->v.FunctionDef.body);
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1164 if (!symtable_exit_block(st, s))
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1165 VISIT_QUIT(st, 0);
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1166 break;
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1167 case ClassDef_kind: {
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diff changeset
1168 PyObject *tmp;
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diff changeset
1169 if (!symtable_add_def(st, s->v.ClassDef.name, DEF_LOCAL))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1170 VISIT_QUIT(st, 0);
61467
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diff changeset
1171 VISIT_SEQ(st, expr, s->v.ClassDef.bases);
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diff changeset
1172 VISIT_SEQ(st, keyword, s->v.ClassDef.keywords);
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diff changeset
1173 if (s->v.ClassDef.starargs)
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1174 VISIT(st, expr, s->v.ClassDef.starargs);
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diff changeset
1175 if (s->v.ClassDef.kwargs)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1176 VISIT(st, expr, s->v.ClassDef.kwargs);
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diff changeset
1177 if (s->v.ClassDef.decorator_list)
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diff changeset
1178 VISIT_SEQ(st, expr, s->v.ClassDef.decorator_list);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1179 if (!symtable_enter_block(st, s->v.ClassDef.name, ClassBlock,
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1180 (void *)s, s->lineno, s->col_offset))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1181 VISIT_QUIT(st, 0);
61467
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diff changeset
1182 if (!GET_IDENTIFIER(__class__) ||
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diff changeset
1183 !symtable_add_def(st, __class__, DEF_LOCAL) ||
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diff changeset
1184 !GET_IDENTIFIER(__locals__) ||
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diff changeset
1185 !symtable_add_def(st, __locals__, DEF_PARAM)) {
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1186 symtable_exit_block(st, s);
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1187 VISIT_QUIT(st, 0);
61467
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diff changeset
1188 }
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diff changeset
1189 tmp = st->st_private;
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diff changeset
1190 st->st_private = s->v.ClassDef.name;
71082
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1191 VISIT_SEQ(st, stmt, s->v.ClassDef.body);
61467
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diff changeset
1192 st->st_private = tmp;
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diff changeset
1193 if (!symtable_exit_block(st, s))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1194 VISIT_QUIT(st, 0);
61467
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diff changeset
1195 break;
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diff changeset
1196 }
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diff changeset
1197 case Return_kind:
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diff changeset
1198 if (s->v.Return.value) {
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parents: 57378
diff changeset
1199 VISIT(st, expr, s->v.Return.value);
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parents: 57378
diff changeset
1200 st->st_cur->ste_returns_value = 1;
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parents: 57378
diff changeset
1201 }
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diff changeset
1202 break;
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parents: 57378
diff changeset
1203 case Delete_kind:
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parents: 57378
diff changeset
1204 VISIT_SEQ(st, expr, s->v.Delete.targets);
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diff changeset
1205 break;
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parents: 57378
diff changeset
1206 case Assign_kind:
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parents: 57378
diff changeset
1207 VISIT_SEQ(st, expr, s->v.Assign.targets);
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parents: 57378
diff changeset
1208 VISIT(st, expr, s->v.Assign.value);
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diff changeset
1209 break;
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diff changeset
1210 case AugAssign_kind:
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parents: 57378
diff changeset
1211 VISIT(st, expr, s->v.AugAssign.target);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1212 VISIT(st, expr, s->v.AugAssign.value);
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parents: 57378
diff changeset
1213 break;
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parents: 57378
diff changeset
1214 case For_kind:
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parents: 57378
diff changeset
1215 VISIT(st, expr, s->v.For.target);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1216 VISIT(st, expr, s->v.For.iter);
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parents: 57378
diff changeset
1217 VISIT_SEQ(st, stmt, s->v.For.body);
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parents: 57378
diff changeset
1218 if (s->v.For.orelse)
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diff changeset
1219 VISIT_SEQ(st, stmt, s->v.For.orelse);
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diff changeset
1220 break;
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diff changeset
1221 case While_kind:
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parents: 57378
diff changeset
1222 VISIT(st, expr, s->v.While.test);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1223 VISIT_SEQ(st, stmt, s->v.While.body);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1224 if (s->v.While.orelse)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1225 VISIT_SEQ(st, stmt, s->v.While.orelse);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1226 break;
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parents: 57378
diff changeset
1227 case If_kind:
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diff changeset
1228 /* XXX if 0: and lookup_yield() hacks */
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parents: 57378
diff changeset
1229 VISIT(st, expr, s->v.If.test);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1230 VISIT_SEQ(st, stmt, s->v.If.body);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1231 if (s->v.If.orelse)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1232 VISIT_SEQ(st, stmt, s->v.If.orelse);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1233 break;
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parents: 57378
diff changeset
1234 case Raise_kind:
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1235 if (s->v.Raise.exc) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1236 VISIT(st, expr, s->v.Raise.exc);
69231
b6fe63c914e4 Issue #9904: fix and clarify some comments + fix indentation in symtable code
Eli Bendersky <eliben@gmail.com>
parents: 68257
diff changeset
1237 if (s->v.Raise.cause) {
b6fe63c914e4 Issue #9904: fix and clarify some comments + fix indentation in symtable code
Eli Bendersky <eliben@gmail.com>
parents: 68257
diff changeset
1238 VISIT(st, expr, s->v.Raise.cause);
b6fe63c914e4 Issue #9904: fix and clarify some comments + fix indentation in symtable code
Eli Bendersky <eliben@gmail.com>
parents: 68257
diff changeset
1239 }
61467
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diff changeset
1240 }
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1241 break;
70499
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1242 case Try_kind:
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1243 VISIT_SEQ(st, stmt, s->v.Try.body);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1244 VISIT_SEQ(st, stmt, s->v.Try.orelse);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1245 VISIT_SEQ(st, excepthandler, s->v.Try.handlers);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1246 VISIT_SEQ(st, stmt, s->v.Try.finalbody);
61467
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diff changeset
1247 break;
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parents: 57378
diff changeset
1248 case Assert_kind:
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parents: 57378
diff changeset
1249 VISIT(st, expr, s->v.Assert.test);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1250 if (s->v.Assert.msg)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1251 VISIT(st, expr, s->v.Assert.msg);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1252 break;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1253 case Import_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1254 VISIT_SEQ(st, alias, s->v.Import.names);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1255 /* XXX Don't have the lineno available inside
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1256 visit_alias */
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1257 if (st->st_cur->ste_unoptimized && !st->st_cur->ste_opt_lineno) {
61467
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parents: 57378
diff changeset
1258 st->st_cur->ste_opt_lineno = s->lineno;
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1259 st->st_cur->ste_opt_col_offset = s->col_offset;
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1260 }
61467
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diff changeset
1261 break;
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parents: 57378
diff changeset
1262 case ImportFrom_kind:
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diff changeset
1263 VISIT_SEQ(st, alias, s->v.ImportFrom.names);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1264 /* XXX Don't have the lineno available inside
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parents: 57378
diff changeset
1265 visit_alias */
64861
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Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1266 if (st->st_cur->ste_unoptimized && !st->st_cur->ste_opt_lineno) {
61467
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parents: 57378
diff changeset
1267 st->st_cur->ste_opt_lineno = s->lineno;
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1268 st->st_cur->ste_opt_col_offset = s->col_offset;
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1269 }
61467
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diff changeset
1270 break;
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parents: 57378
diff changeset
1271 case Global_kind: {
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diff changeset
1272 int i;
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parents: 57378
diff changeset
1273 asdl_seq *seq = s->v.Global.names;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1274 for (i = 0; i < asdl_seq_LEN(seq); i++) {
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parents: 57378
diff changeset
1275 identifier name = (identifier)asdl_seq_GET(seq, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1276 long cur = symtable_lookup(st, name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1277 if (cur < 0)
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1278 VISIT_QUIT(st, 0);
61467
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parents: 57378
diff changeset
1279 if (cur & (DEF_LOCAL | USE)) {
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parents: 57378
diff changeset
1280 char buf[256];
80141
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1281 char *c_name = _PyUnicode_AsString(name);
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1282 if (!c_name)
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1283 return 0;
61467
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diff changeset
1284 if (cur & DEF_LOCAL)
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parents: 57378
diff changeset
1285 PyOS_snprintf(buf, sizeof(buf),
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parents: 57378
diff changeset
1286 GLOBAL_AFTER_ASSIGN,
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diff changeset
1287 c_name);
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diff changeset
1288 else
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diff changeset
1289 PyOS_snprintf(buf, sizeof(buf),
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diff changeset
1290 GLOBAL_AFTER_USE,
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diff changeset
1291 c_name);
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diff changeset
1292 if (!symtable_warn(st, buf, s->lineno))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1293 VISIT_QUIT(st, 0);
61467
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diff changeset
1294 }
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parents: 57378
diff changeset
1295 if (!symtable_add_def(st, name, DEF_GLOBAL))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1296 VISIT_QUIT(st, 0);
80147
fbfaef0a9c00 point errors related to nonlocals and globals to the statement declaring them (closes #10189)
Benjamin Peterson <benjamin@python.org>
parents: 80141
diff changeset
1297 if (!symtable_record_directive(st, name, s))
80240
bd1db93d76e1 Issue #5765: Merge from 3.3
Nick Coghlan <ncoghlan@gmail.com>
parents: 80147 80239
diff changeset
1298 VISIT_QUIT(st, 0);
61467
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diff changeset
1299 }
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parents: 57378
diff changeset
1300 break;
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parents: 57378
diff changeset
1301 }
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parents: 57378
diff changeset
1302 case Nonlocal_kind: {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1303 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1304 asdl_seq *seq = s->v.Nonlocal.names;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1305 for (i = 0; i < asdl_seq_LEN(seq); i++) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1306 identifier name = (identifier)asdl_seq_GET(seq, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1307 long cur = symtable_lookup(st, name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1308 if (cur < 0)
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1309 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1310 if (cur & (DEF_LOCAL | USE)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1311 char buf[256];
80141
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1312 char *c_name = _PyUnicode_AsString(name);
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1313 if (!c_name)
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1314 return 0;
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1315 if (cur & DEF_LOCAL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1316 PyOS_snprintf(buf, sizeof(buf),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1317 NONLOCAL_AFTER_ASSIGN,
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parents: 57378
diff changeset
1318 c_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1319 else
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1320 PyOS_snprintf(buf, sizeof(buf),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1321 NONLOCAL_AFTER_USE,
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parents: 57378
diff changeset
1322 c_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1323 if (!symtable_warn(st, buf, s->lineno))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1324 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1325 }
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1326 if (!symtable_add_def(st, name, DEF_NONLOCAL))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1327 VISIT_QUIT(st, 0);
80147
fbfaef0a9c00 point errors related to nonlocals and globals to the statement declaring them (closes #10189)
Benjamin Peterson <benjamin@python.org>
parents: 80141
diff changeset
1328 if (!symtable_record_directive(st, name, s))
80240
bd1db93d76e1 Issue #5765: Merge from 3.3
Nick Coghlan <ncoghlan@gmail.com>
parents: 80147 80239
diff changeset
1329 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1330 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1331 break;
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parents: 57378
diff changeset
1332 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1333 case Expr_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1334 VISIT(st, expr, s->v.Expr.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1335 break;
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parents: 57378
diff changeset
1336 case Pass_kind:
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parents: 57378
diff changeset
1337 case Break_kind:
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parents: 57378
diff changeset
1338 case Continue_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1339 /* nothing to do here */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1340 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1341 case With_kind:
70438
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1342 VISIT_SEQ(st, withitem, s->v.With.items);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1343 VISIT_SEQ(st, stmt, s->v.With.body);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1344 break;
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diff changeset
1345 }
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1346 VISIT_QUIT(st, 1);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1347 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1348
61467
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1349 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1350 symtable_visit_expr(struct symtable *st, expr_ty e)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1351 {
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1352 if (++st->recursion_depth > st->recursion_limit) {
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1353 PyErr_SetString(PyExc_RuntimeError,
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1354 "maximum recursion depth exceeded during compilation");
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1355 VISIT_QUIT(st, 0);
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1356 }
61467
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diff changeset
1357 switch (e->kind) {
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parents: 57378
diff changeset
1358 case BoolOp_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1359 VISIT_SEQ(st, expr, e->v.BoolOp.values);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1360 break;
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diff changeset
1361 case BinOp_kind:
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parents: 57378
diff changeset
1362 VISIT(st, expr, e->v.BinOp.left);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1363 VISIT(st, expr, e->v.BinOp.right);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1364 break;
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parents: 57378
diff changeset
1365 case UnaryOp_kind:
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parents: 57378
diff changeset
1366 VISIT(st, expr, e->v.UnaryOp.operand);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1367 break;
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diff changeset
1368 case Lambda_kind: {
61466
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diff changeset
1369 if (!GET_IDENTIFIER(lambda))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1370 VISIT_QUIT(st, 0);
61467
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diff changeset
1371 if (e->v.Lambda.args->defaults)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1372 VISIT_SEQ(st, expr, e->v.Lambda.args->defaults);
73366
1e0e821d2626 Issue #13343: Fix a SystemError when a lambda expression uses a global
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 70919
diff changeset
1373 if (e->v.Lambda.args->kw_defaults)
1e0e821d2626 Issue #13343: Fix a SystemError when a lambda expression uses a global
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 70919
diff changeset
1374 VISIT_KWONLYDEFAULTS(st,
1e0e821d2626 Issue #13343: Fix a SystemError when a lambda expression uses a global
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 70919
diff changeset
1375 e->v.Lambda.args->kw_defaults);
61467
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diff changeset
1376 if (!symtable_enter_block(st, lambda,
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1377 FunctionBlock, (void *)e, e->lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1378 e->col_offset))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1379 VISIT_QUIT(st, 0);
71082
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1380 VISIT(st, arguments, e->v.Lambda.args);
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1381 VISIT(st, expr, e->v.Lambda.body);
61467
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diff changeset
1382 if (!symtable_exit_block(st, (void *)e))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1383 VISIT_QUIT(st, 0);
61467
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diff changeset
1384 break;
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diff changeset
1385 }
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diff changeset
1386 case IfExp_kind:
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diff changeset
1387 VISIT(st, expr, e->v.IfExp.test);
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diff changeset
1388 VISIT(st, expr, e->v.IfExp.body);
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diff changeset
1389 VISIT(st, expr, e->v.IfExp.orelse);
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diff changeset
1390 break;
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diff changeset
1391 case Dict_kind:
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diff changeset
1392 VISIT_SEQ(st, expr, e->v.Dict.keys);
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diff changeset
1393 VISIT_SEQ(st, expr, e->v.Dict.values);
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diff changeset
1394 break;
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diff changeset
1395 case Set_kind:
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diff changeset
1396 VISIT_SEQ(st, expr, e->v.Set.elts);
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diff changeset
1397 break;
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diff changeset
1398 case GeneratorExp_kind:
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diff changeset
1399 if (!symtable_visit_genexp(st, e))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1400 VISIT_QUIT(st, 0);
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diff changeset
1401 break;
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diff changeset
1402 case ListComp_kind:
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diff changeset
1403 if (!symtable_visit_listcomp(st, e))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1404 VISIT_QUIT(st, 0);
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diff changeset
1405 break;
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diff changeset
1406 case SetComp_kind:
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diff changeset
1407 if (!symtable_visit_setcomp(st, e))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1408 VISIT_QUIT(st, 0);
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diff changeset
1409 break;
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diff changeset
1410 case DictComp_kind:
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diff changeset
1411 if (!symtable_visit_dictcomp(st, e))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1412 VISIT_QUIT(st, 0);
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diff changeset
1413 break;
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diff changeset
1414 case Yield_kind:
80589
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1415 if (e->v.Yield.value)
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1416 VISIT(st, expr, e->v.Yield.value);
61467
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diff changeset
1417 st->st_cur->ste_generator = 1;
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diff changeset
1418 break;
80589
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1419 case YieldFrom_kind:
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1420 VISIT(st, expr, e->v.YieldFrom.value);
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1421 st->st_cur->ste_generator = 1;
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1422 break;
61467
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1423 case Compare_kind:
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parents: 57378
diff changeset
1424 VISIT(st, expr, e->v.Compare.left);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1425 VISIT_SEQ(st, expr, e->v.Compare.comparators);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1426 break;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1427 case Call_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1428 VISIT(st, expr, e->v.Call.func);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1429 VISIT_SEQ(st, expr, e->v.Call.args);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1430 VISIT_SEQ(st, keyword, e->v.Call.keywords);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1431 if (e->v.Call.starargs)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1432 VISIT(st, expr, e->v.Call.starargs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1433 if (e->v.Call.kwargs)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1434 VISIT(st, expr, e->v.Call.kwargs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1435 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1436 case Num_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1437 case Str_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1438 case Bytes_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1439 case Ellipsis_kind:
80738
03f92a9f0875 create NameConstant AST class for None, True, and False literals (closes #16619)
Benjamin Peterson <benjamin@python.org>
parents: 80590
diff changeset
1440 case NameConstant_kind:
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1441 /* Nothing to do here. */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1442 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1443 /* The following exprs can be assignment targets. */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1444 case Attribute_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1445 VISIT(st, expr, e->v.Attribute.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1446 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1447 case Subscript_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1448 VISIT(st, expr, e->v.Subscript.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1449 VISIT(st, slice, e->v.Subscript.slice);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1450 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1451 case Starred_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1452 VISIT(st, expr, e->v.Starred.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1453 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1454 case Name_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1455 if (!symtable_add_def(st, e->v.Name.id,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1456 e->v.Name.ctx == Load ? USE : DEF_LOCAL))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1457 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1458 /* Special-case super: it counts as a use of __class__ */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1459 if (e->v.Name.ctx == Load &&
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1460 st->st_cur->ste_type == FunctionBlock &&
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1461 !PyUnicode_CompareWithASCIIString(e->v.Name.id, "super")) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1462 if (!GET_IDENTIFIER(__class__) ||
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1463 !symtable_add_def(st, __class__, USE))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1464 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1465 }
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parents: 57378
diff changeset
1466 break;
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1467 /* child nodes of List and Tuple will have expr_context set */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1468 case List_kind:
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parents: 57378
diff changeset
1469 VISIT_SEQ(st, expr, e->v.List.elts);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1470 break;
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parents: 57378
diff changeset
1471 case Tuple_kind:
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parents: 57378
diff changeset
1472 VISIT_SEQ(st, expr, e->v.Tuple.elts);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1473 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1474 }
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1475 VISIT_QUIT(st, 1);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1476 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1477
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1478 static int
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1479 symtable_implicit_arg(struct symtable *st, int pos)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1480 {
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1481 PyObject *id = PyUnicode_FromFormat(".%d", pos);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1482 if (id == NULL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1483 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1484 if (!symtable_add_def(st, id, DEF_PARAM)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1485 Py_DECREF(id);
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parents: 57378
diff changeset
1486 return 0;
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parents: 57378
diff changeset
1487 }
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parents: 57378
diff changeset
1488 Py_DECREF(id);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1489 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1490 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1491
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1492 static int
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1493 symtable_visit_params(struct symtable *st, asdl_seq *args)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1494 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1495 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1496
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1497 if (!args)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1498 return -1;
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1499
61467
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1500 for (i = 0; i < asdl_seq_LEN(args); i++) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1501 arg_ty arg = (arg_ty)asdl_seq_GET(args, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1502 if (!symtable_add_def(st, arg->arg, DEF_PARAM))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1503 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1504 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1505
61467
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diff changeset
1506 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1507 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1508
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1509 static int
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1510 symtable_visit_argannotations(struct symtable *st, asdl_seq *args)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1511 {
61467
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parents: 57378
diff changeset
1512 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1513
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1514 if (!args)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1515 return -1;
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1516
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1517 for (i = 0; i < asdl_seq_LEN(args); i++) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1518 arg_ty arg = (arg_ty)asdl_seq_GET(args, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1519 if (arg->annotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1520 VISIT(st, expr, arg->annotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1521 }
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1522
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1523 return 1;
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1524 }
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1525
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1526 static int
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1527 symtable_visit_annotations(struct symtable *st, stmt_ty s)
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1528 {
61467
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diff changeset
1529 arguments_ty a = s->v.FunctionDef.args;
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parents: 57378
diff changeset
1530
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1531 if (a->args && !symtable_visit_argannotations(st, a->args))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1532 return 0;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1533 if (a->varargannotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1534 VISIT(st, expr, a->varargannotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1535 if (a->kwargannotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1536 VISIT(st, expr, a->kwargannotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1537 if (a->kwonlyargs && !symtable_visit_argannotations(st, a->kwonlyargs))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1538 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1539 if (s->v.FunctionDef.returns)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1540 VISIT(st, expr, s->v.FunctionDef.returns);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1541 return 1;
35742
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parents: 32121
diff changeset
1542 }
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1543
61467
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diff changeset
1544 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1545 symtable_visit_arguments(struct symtable *st, arguments_ty a)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1546 {
61467
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parents: 57378
diff changeset
1547 /* skip default arguments inside function block
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1548 XXX should ast be different?
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1549 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1550 if (a->args && !symtable_visit_params(st, a->args))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1551 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1552 if (a->kwonlyargs && !symtable_visit_params(st, a->kwonlyargs))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1553 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1554 if (a->vararg) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1555 if (!symtable_add_def(st, a->vararg, DEF_PARAM))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1556 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1557 st->st_cur->ste_varargs = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1558 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1559 if (a->kwarg) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1560 if (!symtable_add_def(st, a->kwarg, DEF_PARAM))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1561 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1562 st->st_cur->ste_varkeywords = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1563 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1564 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1565 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1566
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1567
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1568 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1569 symtable_visit_excepthandler(struct symtable *st, excepthandler_ty eh)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1570 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1571 if (eh->v.ExceptHandler.type)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1572 VISIT(st, expr, eh->v.ExceptHandler.type);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1573 if (eh->v.ExceptHandler.name)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1574 if (!symtable_add_def(st, eh->v.ExceptHandler.name, DEF_LOCAL))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1575 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1576 VISIT_SEQ(st, stmt, eh->v.ExceptHandler.body);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1577 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1578 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1579
70438
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1580 static int
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1581 symtable_visit_withitem(struct symtable *st, withitem_ty item)
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1582 {
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1583 VISIT(st, expr, item->context_expr);
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1584 if (item->optional_vars) {
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1585 VISIT(st, expr, item->optional_vars);
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1586 }
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1587 return 1;
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1588 }
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1589
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1590
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1591 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1592 symtable_visit_alias(struct symtable *st, alias_ty a)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1593 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1594 /* Compute store_name, the name actually bound by the import
62260
44dc98502ac3 Merged revisions 81906 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 61466
diff changeset
1595 operation. It is different than a->name when a->name is a
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1596 dotted package name (e.g. spam.eggs)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1597 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1598 PyObject *store_name;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1599 PyObject *name = (a->asname == NULL) ? a->name : a->asname;
72475
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1600 Py_ssize_t dot = PyUnicode_FindChar(name, '.', 0,
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1601 PyUnicode_GET_LENGTH(name), 1);
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1602 if (dot != -1) {
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1603 store_name = PyUnicode_Substring(name, 0, dot);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1604 if (!store_name)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1605 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1606 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1607 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1608 store_name = name;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1609 Py_INCREF(store_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1610 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1611 if (PyUnicode_CompareWithASCIIString(name, "*")) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1612 int r = symtable_add_def(st, store_name, DEF_IMPORT);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1613 Py_DECREF(store_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1614 return r;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1615 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1616 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1617 if (st->st_cur->ste_type != ModuleBlock) {
70919
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1618 int lineno = st->st_cur->ste_lineno;
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1619 int col_offset = st->st_cur->ste_col_offset;
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1620 PyErr_SetString(PyExc_SyntaxError, IMPORT_STAR_WARNING);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1621 PyErr_SyntaxLocationEx(st->st_filename, lineno, col_offset);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1622 Py_DECREF(store_name);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1623 return 0;
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1624 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1625 st->st_cur->ste_unoptimized |= OPT_IMPORT_STAR;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1626 Py_DECREF(store_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1627 return 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1628 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1629 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1630
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1631
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1632 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1633 symtable_visit_comprehension(struct symtable *st, comprehension_ty lc)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1634 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1635 VISIT(st, expr, lc->target);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1636 VISIT(st, expr, lc->iter);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1637 VISIT_SEQ(st, expr, lc->ifs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1638 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1639 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1640
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1641
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1642 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1643 symtable_visit_keyword(struct symtable *st, keyword_ty k)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1644 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1645 VISIT(st, expr, k->value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1646 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1647 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1648
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1649
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1650 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1651 symtable_visit_slice(struct symtable *st, slice_ty s)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1652 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1653 switch (s->kind) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1654 case Slice_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1655 if (s->v.Slice.lower)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1656 VISIT(st, expr, s->v.Slice.lower)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1657 if (s->v.Slice.upper)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1658 VISIT(st, expr, s->v.Slice.upper)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1659 if (s->v.Slice.step)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1660 VISIT(st, expr, s->v.Slice.step)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1661 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1662 case ExtSlice_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1663 VISIT_SEQ(st, slice, s->v.ExtSlice.dims)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1664 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1665 case Index_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1666 VISIT(st, expr, s->v.Index.value)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1667 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1668 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1669 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1670 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1671
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1672 static int
41464
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
1673 symtable_handle_comprehension(struct symtable *st, expr_ty e,
42193
090588a17490 Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42084
diff changeset
1674 identifier scope_name, asdl_seq *generators,
090588a17490 Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42084
diff changeset
1675 expr_ty elt, expr_ty value)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1676 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1677 int is_generator = (e->kind == GeneratorExp_kind);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1678 int needs_tmp = !is_generator;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1679 comprehension_ty outermost = ((comprehension_ty)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1680 asdl_seq_GET(generators, 0));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1681 /* Outermost iterator is evaluated in current scope */
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1682 VISIT(st, expr, outermost->iter);
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1683 /* Create comprehension scope for the rest */
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1684 if (!scope_name ||
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1685 !symtable_enter_block(st, scope_name, FunctionBlock, (void *)e,
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1686 e->lineno, e->col_offset)) {
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1687 return 0;
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1688 }
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1689 st->st_cur->ste_generator = is_generator;
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1690 /* Outermost iter is received as an argument */
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1691 if (!symtable_implicit_arg(st, 0)) {
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1692 symtable_exit_block(st, (void *)e);
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1693 return 0;
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1694 }
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1695 /* Allocate temporary name if needed */
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1696 if (needs_tmp && !symtable_new_tmpname(st)) {
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1697 symtable_exit_block(st, (void *)e);
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1698 return 0;
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1699 }
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1700 VISIT(st, expr, outermost->target);
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1701 VISIT_SEQ(st, expr, outermost->ifs);
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1702 VISIT_SEQ_TAIL(st, comprehension, generators, 1);
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1703 if (value)
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1704 VISIT(st, expr, value);
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1705 VISIT(st, expr, elt);
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1706 return symtable_exit_block(st, (void *)e);
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1707 }
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1708
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1709 static int
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1710 symtable_visit_genexp(struct symtable *st, expr_ty e)
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1711 {
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1712 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(genexpr),
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1713 e->v.GeneratorExp.generators,
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1714 e->v.GeneratorExp.elt, NULL);
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1715 }
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1716
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1717 static int
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1718 symtable_visit_listcomp(struct symtable *st, expr_ty e)
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1719 {
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1720 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(listcomp),
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1721 e->v.ListComp.generators,
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1722 e->v.ListComp.elt, NULL);
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1723 }
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1724
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1725 static int
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1726 symtable_visit_setcomp(struct symtable *st, expr_ty e)
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1727 {
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1728 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(setcomp),
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1729 e->v.SetComp.generators,
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1730 e->v.SetComp.elt, NULL);
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1731 }
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1732
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1733 static int
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1734 symtable_visit_dictcomp(struct symtable *st, expr_ty e)
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1735 {
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1736 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(dictcomp),
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1737 e->v.DictComp.generators,
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1738 e->v.DictComp.key,
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1739 e->v.DictComp.value);
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1740 }