Mercurial > cpython-lru_cache-weakref

annotate Python/symtable.c @ 85803:c3df31cbcd0a 3.3

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don't scale compiler stack frames if the recursion limit is huge (closes #19098)
author Benjamin Peterson <benjamin@python.org>
date Thu, 26 Sep 2013 22:17:45 -0400
parents 86783c4fd528
children 9a7ec433bf59
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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50
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51 ste->ste_varnames = PyList_New(0);
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52 if (ste->ste_varnames == NULL)
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53 goto fail;
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54
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55 ste->ste_children = PyList_New(0);
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56 if (ste->ste_children == NULL)
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57 goto fail;
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58
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59 ste->ste_type = block;
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60 ste->ste_unoptimized = 0;
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61 ste->ste_nested = 0;
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62 ste->ste_free = 0;
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63 ste->ste_varargs = 0;
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64 ste->ste_varkeywords = 0;
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65 ste->ste_opt_lineno = 0;
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66 ste->ste_opt_col_offset = 0;
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67 ste->ste_tmpname = 0;
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68 ste->ste_lineno = lineno;
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69 ste->ste_col_offset = col_offset;
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70
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71 if (st->st_cur != NULL &&
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72 (st->st_cur->ste_nested ||
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73 st->st_cur->ste_type == FunctionBlock))
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74 ste->ste_nested = 1;
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75 ste->ste_child_free = 0;
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76 ste->ste_generator = 0;
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77 ste->ste_returns_value = 0;
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78
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79 if (PyDict_SetItem(st->st_blocks, ste->ste_id, (PyObject *)ste) < 0)
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80 goto fail;
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81
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82 return ste;
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83 fail:
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84 Py_XDECREF(ste);
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85 return NULL;
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86 }
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87
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88 static PyObject *
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89 ste_repr(PySTEntryObject *ste)
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90 {
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91 return PyUnicode_FromFormat("<symtable entry %U(%ld), line %d>",
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92 ste->ste_name,
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93 PyLong_AS_LONG(ste->ste_id), ste->ste_lineno);
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94 }
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95
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96 static void
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97 ste_dealloc(PySTEntryObject *ste)
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98 {
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99 ste->ste_table = NULL;
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100 Py_XDECREF(ste->ste_id);
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101 Py_XDECREF(ste->ste_name);
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102 Py_XDECREF(ste->ste_symbols);
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103 Py_XDECREF(ste->ste_varnames);
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104 Py_XDECREF(ste->ste_children);
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105 PyObject_Del(ste);
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106 }
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107
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108 #define OFF(x) offsetof(PySTEntryObject, x)
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109
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110 static PyMemberDef ste_memberlist[] = {
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111 {"id", T_OBJECT, OFF(ste_id), READONLY},
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112 {"name", T_OBJECT, OFF(ste_name), READONLY},
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113 {"symbols", T_OBJECT, OFF(ste_symbols), READONLY},
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114 {"varnames", T_OBJECT, OFF(ste_varnames), READONLY},
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115 {"children", T_OBJECT, OFF(ste_children), READONLY},
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116 {"optimized",T_INT, OFF(ste_unoptimized), READONLY},
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117 {"nested", T_INT, OFF(ste_nested), READONLY},
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118 {"type", T_INT, OFF(ste_type), READONLY},
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119 {"lineno", T_INT, OFF(ste_lineno), READONLY},
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120 {NULL}
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121 };
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122
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123 PyTypeObject PySTEntry_Type = {
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124 PyVarObject_HEAD_INIT(&PyType_Type, 0)
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125 "symtable entry",
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126 sizeof(PySTEntryObject),
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127 0,
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128 (destructor)ste_dealloc, /* tp_dealloc */
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129 0, /* tp_print */
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130 0, /* tp_getattr */
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131 0, /* tp_setattr */
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132 0, /* tp_reserved */
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133 (reprfunc)ste_repr, /* tp_repr */
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134 0, /* tp_as_number */
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135 0, /* tp_as_sequence */
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136 0, /* tp_as_mapping */
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137 0, /* tp_hash */
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138 0, /* tp_call */
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139 0, /* tp_str */
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140 PyObject_GenericGetAttr, /* tp_getattro */
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141 0, /* tp_setattro */
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142 0, /* tp_as_buffer */
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143 Py_TPFLAGS_DEFAULT, /* tp_flags */
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144 0, /* tp_doc */
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145 0, /* tp_traverse */
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146 0, /* tp_clear */
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147 0, /* tp_richcompare */
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148 0, /* tp_weaklistoffset */
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149 0, /* tp_iter */
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150 0, /* tp_iternext */
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151 0, /* tp_methods */
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152 ste_memberlist, /* tp_members */
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153 0, /* tp_getset */
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154 0, /* tp_base */
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155 0, /* tp_dict */
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156 0, /* tp_descr_get */
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157 0, /* tp_descr_set */
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158 0, /* tp_dictoffset */
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159 0, /* tp_init */
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160 0, /* tp_alloc */
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161 0, /* tp_new */
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162 };
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163
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164 static int symtable_analyze(struct symtable *st);
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165 static int symtable_warn(struct symtable *st, char *msg, int lineno);
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166 static int symtable_enter_block(struct symtable *st, identifier name,
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167 _Py_block_ty block, void *ast, int lineno,
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168 int col_offset);
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169 static int symtable_exit_block(struct symtable *st, void *ast);
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170 static int symtable_visit_stmt(struct symtable *st, stmt_ty s);
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171 static int symtable_visit_expr(struct symtable *st, expr_ty s);
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172 static int symtable_visit_genexp(struct symtable *st, expr_ty s);
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173 static int symtable_visit_listcomp(struct symtable *st, expr_ty s);
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174 static int symtable_visit_setcomp(struct symtable *st, expr_ty s);
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175 static int symtable_visit_dictcomp(struct symtable *st, expr_ty s);
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176 static int symtable_visit_arguments(struct symtable *st, arguments_ty);
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177 static int symtable_visit_excepthandler(struct symtable *st, excepthandler_ty);
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178 static int symtable_visit_alias(struct symtable *st, alias_ty);
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179 static int symtable_visit_comprehension(struct symtable *st, comprehension_ty);
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180 static int symtable_visit_keyword(struct symtable *st, keyword_ty);
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181 static int symtable_visit_slice(struct symtable *st, slice_ty);
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182 static int symtable_visit_params(struct symtable *st, asdl_seq *args);
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183 static int symtable_visit_argannotations(struct symtable *st, asdl_seq *args);
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184 static int symtable_implicit_arg(struct symtable *st, int pos);
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185 static int symtable_visit_annotations(struct symtable *st, stmt_ty s);
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186 static int symtable_visit_withitem(struct symtable *st, withitem_ty item);
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187
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188
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189 static identifier top = NULL, lambda = NULL, genexpr = NULL,
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190 listcomp = NULL, setcomp = NULL, dictcomp = NULL,
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191 __class__ = NULL, __locals__ = NULL;
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192
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193 #define GET_IDENTIFIER(VAR) \
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194 ((VAR) ? (VAR) : ((VAR) = PyUnicode_InternFromString(# VAR)))
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195
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196 #define DUPLICATE_ARGUMENT \
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197 "duplicate argument '%U' in function definition"
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198
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199 static struct symtable *
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200 symtable_new(void)
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201 {
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202 struct symtable *st;
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203
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204 st = (struct symtable *)PyMem_Malloc(sizeof(struct symtable));
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205 if (st == NULL)
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206 return NULL;
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207
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208 st->st_filename = NULL;
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209 st->st_blocks = NULL;
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210
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211 if ((st->st_stack = PyList_New(0)) == NULL)
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212 goto fail;
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213 if ((st->st_blocks = PyDict_New()) == NULL)
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214 goto fail;
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215 st->st_cur = NULL;
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216 st->st_private = NULL;
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217 return st;
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218 fail:
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219 PySymtable_Free(st);
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220 return NULL;
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221 }
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222
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223 /* When compiling the use of C stack is probably going to be a lot
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224 lighter than when executing Python code but still can overflow
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225 and causing a Python crash if not checked (e.g. eval("()"*300000)).
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226 Using the current recursion limit for the compiler seems too
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227 restrictive (it caused at least one test to fail) so a factor is
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228 used to allow deeper recursion when compiling an expression.
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229
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230 Using a scaling factor means this should automatically adjust when
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231 the recursion limit is adjusted for small or large C stack allocations.
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232 */
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233 #define COMPILER_STACK_FRAME_SCALE 3
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234
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235 struct symtable *
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236 PySymtable_Build(mod_ty mod, const char *filename, PyFutureFeatures *future)
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237 {
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238 struct symtable *st = symtable_new();
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239 asdl_seq *seq;
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240 int i;
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241 PyThreadState *tstate;
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242 int recursion_limit = Py_GetRecursionLimit();
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243
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244 if (st == NULL)
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245 return st;
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246 st->st_filename = filename;
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247 st->st_future = future;
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248
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249 /* Setup recursion depth check counters */
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250 tstate = PyThreadState_GET();
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251 if (!tstate) {
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252 PySymtable_Free(st);
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253 return NULL;
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254 }
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255 /* Be careful here to prevent overflow. */
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256 st->recursion_depth = (tstate->recursion_depth < INT_MAX / COMPILER_STACK_FRAME_SCALE) ?
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257 tstate->recursion_depth * COMPILER_STACK_FRAME_SCALE : tstate->recursion_depth;
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258 st->recursion_limit = (recursion_limit < INT_MAX / COMPILER_STACK_FRAME_SCALE) ?
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259 recursion_limit * COMPILER_STACK_FRAME_SCALE : recursion_limit;
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260
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261 /* Make the initial symbol information gathering pass */
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262 if (!GET_IDENTIFIER(top) ||
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263 !symtable_enter_block(st, top, ModuleBlock, (void *)mod, 0, 0)) {
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264 PySymtable_Free(st);
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265 return NULL;
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266 }
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267
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268 st->st_top = st->st_cur;
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269 st->st_cur->ste_unoptimized = OPT_TOPLEVEL;
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270 switch (mod->kind) {
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271 case Module_kind:
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272 seq = mod->v.Module.body;
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273 for (i = 0; i < asdl_seq_LEN(seq); i++)
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274 if (!symtable_visit_stmt(st,
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275 (stmt_ty)asdl_seq_GET(seq, i)))
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276 goto error;
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277 break;
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278 case Expression_kind:
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279 if (!symtable_visit_expr(st, mod->v.Expression.body))
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280 goto error;
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281 break;
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282 case Interactive_kind:
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283 seq = mod->v.Interactive.body;
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284 for (i = 0; i < asdl_seq_LEN(seq); i++)
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285 if (!symtable_visit_stmt(st,
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286 (stmt_ty)asdl_seq_GET(seq, i)))
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287 goto error;
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288 break;
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289 case Suite_kind:
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290 PyErr_SetString(PyExc_RuntimeError,
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291 "this compiler does not handle Suites");
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292 goto error;
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293 }
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294 if (!symtable_exit_block(st, (void *)mod)) {
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295 PySymtable_Free(st);
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296 return NULL;
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297 }
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298 /* Make the second symbol analysis pass */
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299 if (symtable_analyze(st))
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300 return st;
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301 PySymtable_Free(st);
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302 return NULL;
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303 error:
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304 (void) symtable_exit_block(st, (void *)mod);
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305 PySymtable_Free(st);
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306 return NULL;
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307 }
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308
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309 void
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310 PySymtable_Free(struct symtable *st)
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311 {
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312 Py_XDECREF(st->st_blocks);
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313 Py_XDECREF(st->st_stack);
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314 PyMem_Free((void *)st);
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315 }
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316
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317 PySTEntryObject *
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318 PySymtable_Lookup(struct symtable *st, void *key)
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319 {
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320 PyObject *k, *v;
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321
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322 k = PyLong_FromVoidPtr(key);
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323 if (k == NULL)
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324 return NULL;
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325 v = PyDict_GetItem(st->st_blocks, k);
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326 if (v) {
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327 assert(PySTEntry_Check(v));
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328 Py_INCREF(v);
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329 }
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330 else {
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331 PyErr_SetString(PyExc_KeyError,
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332 "unknown symbol table entry");
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333 }
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334
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335 Py_DECREF(k);
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336 return (PySTEntryObject *)v;
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337 }
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338
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339 int
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340 PyST_GetScope(PySTEntryObject *ste, PyObject *name)
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341 {
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342 PyObject *v = PyDict_GetItem(ste->ste_symbols, name);
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343 if (!v)
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344 return 0;
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345 assert(PyLong_Check(v));
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346 return (PyLong_AS_LONG(v) >> SCOPE_OFFSET) & SCOPE_MASK;
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347 }
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348
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349
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350 /* Analyze raw symbol information to determine scope of each name.
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351
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352 The next several functions are helpers for symtable_analyze(),
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353 which determines whether a name is local, global, or free. In addition,
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354 it determines which local variables are cell variables; they provide
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355 bindings that are used for free variables in enclosed blocks.
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356
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357 There are also two kinds of global variables, implicit and explicit. An
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358 explicit global is declared with the global statement. An implicit
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359 global is a free variable for which the compiler has found no binding
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360 in an enclosing function scope. The implicit global is either a global
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361 or a builtin. Python's module and class blocks use the xxx_NAME opcodes
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362 to handle these names to implement slightly odd semantics. In such a
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363 block, the name is treated as global until it is assigned to; then it
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364 is treated as a local.
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365
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366 The symbol table requires two passes to determine the scope of each name.
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367 The first pass collects raw facts from the AST via the symtable_visit_*
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368 functions: the name is a parameter here, the name is used but not defined
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369 here, etc. The second pass analyzes these facts during a pass over the
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370 PySTEntryObjects created during pass 1.
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371
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372 When a function is entered during the second pass, the parent passes
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373 the set of all name bindings visible to its children. These bindings
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374 are used to determine if non-local variables are free or implicit globals.
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375 Names which are explicitly declared nonlocal must exist in this set of
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376 visible names - if they do not, a syntax error is raised. After doing
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377 the local analysis, it analyzes each of its child blocks using an
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378 updated set of name bindings.
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379
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380 The children update the free variable set. If a local variable is added to
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381 the free variable set by the child, the variable is marked as a cell. The
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382 function object being defined must provide runtime storage for the variable
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383 that may outlive the function's frame. Cell variables are removed from the
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384 free set before the analyze function returns to its parent.
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385
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386 During analysis, the names are:
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387 symbols: dict mapping from symbol names to flag values (including offset scope values)
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388 scopes: dict mapping from symbol names to scope values (no offset)
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389 local: set of all symbol names local to the current scope
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390 bound: set of all symbol names local to a containing function scope
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391 free: set of all symbol names referenced but not bound in child scopes
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392 global: set of all symbol names explicitly declared as global
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393 */
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394
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395 #define SET_SCOPE(DICT, NAME, I) { \
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396 PyObject *o = PyLong_FromLong(I); \
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397 if (!o) \
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398 return 0; \
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399 if (PyDict_SetItem((DICT), (NAME), o) < 0) { \
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400 Py_DECREF(o); \
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401 return 0; \
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402 } \
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403 Py_DECREF(o); \
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404 }
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405
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406 /* Decide on scope of name, given flags.
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407
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408 The namespace dictionaries may be modified to record information
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409 about the new name. For example, a new global will add an entry to
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410 global. A name that was global can be changed to local.
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411 */
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412
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413 static int
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414 analyze_name(PySTEntryObject *ste, PyObject *scopes, PyObject *name, long flags,
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415 PyObject *bound, PyObject *local, PyObject *free,
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416 PyObject *global)
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417 {
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418 if (flags & DEF_GLOBAL) {
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419 if (flags & DEF_PARAM) {
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420 PyErr_Format(PyExc_SyntaxError,
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421 "name '%U' is parameter and global",
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422 name);
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423 PyErr_SyntaxLocationEx(ste->ste_table->st_filename,
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424 ste->ste_lineno, ste->ste_col_offset);
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425
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426 return 0;
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427 }
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428 if (flags & DEF_NONLOCAL) {
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429 PyErr_Format(PyExc_SyntaxError,
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430 "name '%U' is nonlocal and global",
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431 name);
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432 return 0;
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433 }
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434 SET_SCOPE(scopes, name, GLOBAL_EXPLICIT);
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435 if (PySet_Add(global, name) < 0)
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436 return 0;
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437 if (bound && (PySet_Discard(bound, name) < 0))
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438 return 0;
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439 return 1;
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440 }
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441 if (flags & DEF_NONLOCAL) {
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442 if (flags & DEF_PARAM) {
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443 PyErr_Format(PyExc_SyntaxError,
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444 "name '%U' is parameter and nonlocal",
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445 name);
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446 return 0;
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447 }
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448 if (!bound) {
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449 PyErr_Format(PyExc_SyntaxError,
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450 "nonlocal declaration not allowed at module level");
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451 return 0;
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452 }
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453 if (!PySet_Contains(bound, name)) {
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454 PyErr_Format(PyExc_SyntaxError,
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455 "no binding for nonlocal '%U' found",
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456 name);
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457
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458 return 0;
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459 }
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460 SET_SCOPE(scopes, name, FREE);
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461 ste->ste_free = 1;
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462 return PySet_Add(free, name) >= 0;
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463 }
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464 if (flags & DEF_BOUND) {
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465 SET_SCOPE(scopes, name, LOCAL);
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466 if (PySet_Add(local, name) < 0)
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467 return 0;
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468 if (PySet_Discard(global, name) < 0)
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469 return 0;
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470 return 1;
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471 }
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472 /* If an enclosing block has a binding for this name, it
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473 is a free variable rather than a global variable.
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474 Note that having a non-NULL bound implies that the block
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475 is nested.
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476 */
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477 if (bound && PySet_Contains(bound, name)) {
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478 SET_SCOPE(scopes, name, FREE);
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479 ste->ste_free = 1;
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480 return PySet_Add(free, name) >= 0;
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481 }
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482 /* If a parent has a global statement, then call it global
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483 explicit? It could also be global implicit.
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484 */
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485 if (global && PySet_Contains(global, name)) {
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486 SET_SCOPE(scopes, name, GLOBAL_IMPLICIT);
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487 return 1;
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488 }
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489 if (ste->ste_nested)
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490 ste->ste_free = 1;
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491 SET_SCOPE(scopes, name, GLOBAL_IMPLICIT);
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492 return 1;
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493 }
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494
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495 #undef SET_SCOPE
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496
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497 /* If a name is defined in free and also in locals, then this block
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498 provides the binding for the free variable. The name should be
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499 marked CELL in this block and removed from the free list.
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500
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501 Note that the current block's free variables are included in free.
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502 That's safe because no name can be free and local in the same scope.
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503
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504 The 'restricted' argument may be set to a string to restrict the analysis
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505 to the one variable whose name equals that string (e.g. "__class__").
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506 */
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507
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508 static int
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509 analyze_cells(PyObject *scopes, PyObject *free, const char *restricted)
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510 {
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511 PyObject *name, *v, *v_cell;
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512 int success = 0;
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513 Py_ssize_t pos = 0;
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514
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515 v_cell = PyLong_FromLong(CELL);
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516 if (!v_cell)
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517 return 0;
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Antoine Pitrou <solipsis@pitrou.net>
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518 while (PyDict_Next(scopes, &pos, &name, &v)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
519 long scope;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
520 assert(PyLong_Check(v));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
521 scope = PyLong_AS_LONG(v);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
522 if (scope != LOCAL)
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parents: 57378
diff changeset
523 continue;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
524 if (!PySet_Contains(free, name))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
525 continue;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
526 if (restricted != NULL &&
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
527 PyUnicode_CompareWithASCIIString(name, restricted))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
528 continue;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
529 /* Replace LOCAL with CELL for this name, and remove
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
530 from free. It is safe to replace the value of name
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parents: 57378
diff changeset
531 in the dict, because it will not cause a resize.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
532 */
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parents: 57378
diff changeset
533 if (PyDict_SetItem(scopes, name, v_cell) < 0)
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parents: 57378
diff changeset
534 goto error;
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parents: 57378
diff changeset
535 if (PySet_Discard(free, name) < 0)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
536 goto error;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
537 }
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parents: 57378
diff changeset
538 success = 1;
35742
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parents: 32121
diff changeset
539 error:
61467
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parents: 57378
diff changeset
540 Py_DECREF(v_cell);
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parents: 57378
diff changeset
541 return success;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
542 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
543
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
544 /* Check for illegal statements in unoptimized namespaces */
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
545 static int
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
546 check_unoptimized(const PySTEntryObject* ste) {
61467
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547 const char* trailer;
35742
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Jeremy Hylton <jeremy@alum.mit.edu>
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548
61467
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diff changeset
549 if (ste->ste_type != FunctionBlock || !ste->ste_unoptimized
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
550 || !(ste->ste_free || ste->ste_child_free))
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diff changeset
551 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
552
61467
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diff changeset
553 trailer = (ste->ste_child_free ?
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diff changeset
554 "contains a nested function with free variables" :
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
555 "is a nested function");
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
556
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
557 switch (ste->ste_unoptimized) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
558 case OPT_TOPLEVEL: /* import * at top-level is fine */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
559 return 1;
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parents: 57378
diff changeset
560 case OPT_IMPORT_STAR:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
561 PyErr_Format(PyExc_SyntaxError,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
562 "import * is not allowed in function '%U' because it %s",
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
563 ste->ste_name, trailer);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
564 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
565 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
566
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
567 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
568 ste->ste_opt_col_offset);
61467
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diff changeset
569 return 0;
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
570 }
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
571
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
572 /* Enter the final scope information into the ste_symbols dict.
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diff changeset
573 *
35742
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parents: 32121
diff changeset
574 * All arguments are dicts. Modifies symbols, others are read-only.
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
575 */
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
576 static int
61467
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diff changeset
577 update_symbols(PyObject *symbols, PyObject *scopes,
37615
19d99b31555c Make symtable.c safe for C++ compilers. Changed macros in the same way as
Anthony Baxter <anthonybaxter@gmail.com>
parents: 36739
diff changeset
578 PyObject *bound, PyObject *free, int classflag)
35742
1c4d192f1568 Merge ast-branch to head
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diff changeset
579 {
61467
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580 PyObject *name = NULL, *itr = NULL;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
581 PyObject *v = NULL, *v_scope = NULL, *v_new = NULL, *v_free = NULL;
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parents: 57378
diff changeset
582 Py_ssize_t pos = 0;
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
583
61467
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diff changeset
584 /* Update scope information for all symbols in this scope */
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diff changeset
585 while (PyDict_Next(symbols, &pos, &name, &v)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
586 long scope, flags;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
587 assert(PyLong_Check(v));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
588 flags = PyLong_AS_LONG(v);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
589 v_scope = PyDict_GetItem(scopes, name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
590 assert(v_scope && PyLong_Check(v_scope));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
591 scope = PyLong_AS_LONG(v_scope);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
592 flags |= (scope << SCOPE_OFFSET);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
593 v_new = PyLong_FromLong(flags);
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diff changeset
594 if (!v_new)
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parents: 57378
diff changeset
595 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
596 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
597 Py_DECREF(v_new);
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diff changeset
598 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
599 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
600 Py_DECREF(v_new);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
601 }
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
602
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
603 /* Record not yet resolved free variables from children (if any) */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
604 v_free = PyLong_FromLong(FREE << SCOPE_OFFSET);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
605 if (!v_free)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
606 return 0;
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
607
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
608 itr = PyObject_GetIter(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
609 if (!itr)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
610 goto error;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
611
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
612 while ((name = PyIter_Next(itr))) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
613 v = PyDict_GetItem(symbols, name);
41464
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
614
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
615 /* Handle symbol that already exists in this scope */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
616 if (v) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
617 /* Handle a free variable in a method of
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
618 the class that has the same name as a local
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
619 or global in the class scope.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
620 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
621 if (classflag &&
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
622 PyLong_AS_LONG(v) & (DEF_BOUND | DEF_GLOBAL)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
623 long flags = PyLong_AS_LONG(v) | DEF_FREE_CLASS;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
624 v_new = PyLong_FromLong(flags);
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diff changeset
625 if (!v_new) {
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
626 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
627 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
628 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
629 Py_DECREF(v_new);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
630 goto error;
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parents: 57378
diff changeset
631 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
632 Py_DECREF(v_new);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
633 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
634 /* It's a cell, or already free in this scope */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
635 Py_DECREF(name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
636 continue;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
637 }
61467
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diff changeset
638 /* Handle global symbol */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
639 if (!PySet_Contains(bound, name)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
640 Py_DECREF(name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
641 continue; /* it's a global */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
642 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
643 /* Propagate new free symbol up the lexical stack */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
644 if (PyDict_SetItem(symbols, name, v_free) < 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
645 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
646 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
647 Py_DECREF(name);
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parents: 57378
diff changeset
648 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
649 Py_DECREF(itr);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
650 Py_DECREF(v_free);
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diff changeset
651 return 1;
41464
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
652 error:
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
653 Py_XDECREF(v_free);
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parents: 57378
diff changeset
654 Py_XDECREF(itr);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
655 Py_XDECREF(name);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
656 return 0;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
657 }
35742
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Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
658
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
659 /* 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
660
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
661 Arguments:
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
662 ste -- current symtable entry (input/output)
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
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diff changeset
663 bound -- set of variables bound in enclosing scopes (input). bound
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
664 is NULL for module blocks.
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
665 free -- set of free variables in enclosed scopes (output)
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
666 globals -- set of declared global variables in enclosing scopes (input)
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
667
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
668 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
669 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
670 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
671 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
672 used to evaluated nested blocks.
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
673
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
674 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
675 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
676 propagate back to a parent block.
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
677 */
1c4d192f1568 Merge ast-branch to head
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diff changeset
678
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
679 static int
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
680 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
681 PyObject *global, PyObject* child_free);
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
682
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
683 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
684 analyze_block(PySTEntryObject *ste, PyObject *bound, PyObject *free,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
685 PyObject *global)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
686 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
687 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
688 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
689 PyObject *temp;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
690 int i, success = 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
691 Py_ssize_t pos = 0;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
692
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
693 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
694 if (!local)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
695 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
696 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
697 if (!scopes)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
698 goto error;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
699
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
700 /* 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
701 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
702 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
703 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
704 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
705 after names are analyzed.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
706 */
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
707
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
708 /* 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
709 can write reasonable helper functions?
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
710 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
711 newglobal = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
712 if (!newglobal)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
713 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
714 newfree = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
715 if (!newfree)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
716 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
717 newbound = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
718 if (!newbound)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
719 goto error;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
720
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
721 /* 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
722 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
723 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
724 this one.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
725 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
726 if (ste->ste_type == ClassBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
727 /* Pass down known globals */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
728 temp = PyNumber_InPlaceOr(newglobal, global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
729 if (!temp)
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 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
732 /* Pass down previously bound symbols */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
733 if (bound) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
734 temp = PyNumber_InPlaceOr(newbound, bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
735 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
736 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
737 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
738 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
739 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
740
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
741 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
742 long flags = PyLong_AS_LONG(v);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
743 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
744 bound, local, free, global))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
745 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
746 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
747
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
748 /* 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
749 if (ste->ste_type != ClassBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
750 /* Add function locals to bound set */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
751 if (ste->ste_type == FunctionBlock) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
752 temp = PyNumber_InPlaceOr(newbound, local);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
753 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
754 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
755 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
756 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
757 /* Pass down previously bound symbols */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
758 if (bound) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
759 temp = PyNumber_InPlaceOr(newbound, bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
760 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
761 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
762 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
763 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
764 /* Pass down known globals */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
765 temp = PyNumber_InPlaceOr(newglobal, global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
766 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
767 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
768 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
769 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
770 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
771 /* Special-case __class__ */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
772 if (!GET_IDENTIFIER(__class__))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
773 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
774 assert(PySet_Contains(local, __class__) == 1);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
775 if (PySet_Add(newbound, __class__) < 0)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
776 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
777 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
778
69231
b6fe63c914e4 Issue #9904: fix and clarify some comments + fix indentation in symtable code
Eli Bendersky <eliben@gmail.com>
parents: 68257
diff changeset
779 /* 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
780
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
781 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
782 nested blocks. The free variables in the children will
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diff changeset
783 be collected in allfree.
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parents: 57378
diff changeset
784 */
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diff changeset
785 allfree = PySet_New(NULL);
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parents: 57378
diff changeset
786 if (!allfree)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
787 goto error;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
788 for (i = 0; i < PyList_GET_SIZE(ste->ste_children); ++i) {
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parents: 57378
diff changeset
789 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
790 PySTEntryObject* entry;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
791 assert(c && PySTEntry_Check(c));
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diff changeset
792 entry = (PySTEntryObject*)c;
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diff changeset
793 if (!analyze_child_block(entry, newbound, newfree, newglobal,
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parents: 57378
diff changeset
794 allfree))
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
795 goto error;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
796 /* Check if any children have free variables */
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parents: 57378
diff changeset
797 if (entry->ste_free || entry->ste_child_free)
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parents: 57378
diff changeset
798 ste->ste_child_free = 1;
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parents: 57378
diff changeset
799 }
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
800
61467
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diff changeset
801 temp = PyNumber_InPlaceOr(newfree, allfree);
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parents: 57378
diff changeset
802 if (!temp)
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parents: 57378
diff changeset
803 goto error;
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parents: 57378
diff changeset
804 Py_DECREF(temp);
52528
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parents: 51959
diff changeset
805
61467
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parents: 57378
diff changeset
806 /* Check if any local variables must be converted to cell variables */
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parents: 57378
diff changeset
807 if (ste->ste_type == FunctionBlock && !analyze_cells(scopes, newfree,
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
808 NULL))
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
809 goto error;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
810 else if (ste->ste_type == ClassBlock && !analyze_cells(scopes, newfree,
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
811 "__class__"))
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parents: 57378
diff changeset
812 goto error;
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parents: 57378
diff changeset
813 /* Records the results of the analysis in the symbol table entry */
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
814 if (!update_symbols(ste->ste_symbols, scopes, bound, newfree,
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parents: 57378
diff changeset
815 ste->ste_type == ClassBlock))
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
816 goto error;
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parents: 57378
diff changeset
817 if (!check_unoptimized(ste))
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
818 goto error;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
819
61467
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diff changeset
820 temp = PyNumber_InPlaceOr(free, newfree);
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diff changeset
821 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
822 goto error;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
823 Py_DECREF(temp);
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parents: 57378
diff changeset
824 success = 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
825 error:
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
826 Py_XDECREF(scopes);
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parents: 57378
diff changeset
827 Py_XDECREF(local);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
828 Py_XDECREF(newbound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
829 Py_XDECREF(newglobal);
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parents: 57378
diff changeset
830 Py_XDECREF(newfree);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
831 Py_XDECREF(allfree);
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parents: 57378
diff changeset
832 if (!success)
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parents: 57378
diff changeset
833 assert(PyErr_Occurred());
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parents: 57378
diff changeset
834 return success;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
835 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
836
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
837 static int
61467
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parents: 57378
diff changeset
838 analyze_child_block(PySTEntryObject *entry, PyObject *bound, PyObject *free,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
839 PyObject *global, PyObject* child_free)
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
840 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
841 PyObject *temp_bound = NULL, *temp_global = NULL, *temp_free = NULL;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
842 PyObject *temp;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
843
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
844 /* 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
845
61467
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diff changeset
846 These dictionary are used by all blocks enclosed by the
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
847 current block. The analyze_block() call modifies these
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
848 dictionaries.
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
849
61467
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diff changeset
850 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
851 temp_bound = PySet_New(bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
852 if (!temp_bound)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
853 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
854 temp_free = PySet_New(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
855 if (!temp_free)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
856 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
857 temp_global = PySet_New(global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
858 if (!temp_global)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
859 goto error;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
860
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
861 if (!analyze_block(entry, temp_bound, temp_free, temp_global))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
862 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
863 temp = PyNumber_InPlaceOr(child_free, temp_free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
864 if (!temp)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
865 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
866 Py_DECREF(temp);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
867 Py_DECREF(temp_bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
868 Py_DECREF(temp_free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
869 Py_DECREF(temp_global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
870 return 1;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
871 error:
61467
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parents: 57378
diff changeset
872 Py_XDECREF(temp_bound);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
873 Py_XDECREF(temp_free);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
874 Py_XDECREF(temp_global);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
875 return 0;
52528
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
876 }
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 51959
diff changeset
877
2b436310fc8b Merged revisions 70801,70809 via svnmerge from
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parents: 51959
diff changeset
878 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
879 symtable_analyze(struct symtable *st)
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
880 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
881 PyObject *free, *global;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
882 int r;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
883
61467
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parents: 57378
diff changeset
884 free = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
885 if (!free)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
886 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
887 global = PySet_New(NULL);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
888 if (!global) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
889 Py_DECREF(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
890 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
891 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
892 r = analyze_block(st->st_top, NULL, free, global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
893 Py_DECREF(free);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
894 Py_DECREF(global);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
895 return r;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
896 }
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
897
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
898
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
899 static int
36089
4aa01879a8f5 Bug #889500, fix line number on SyntaxWarning for global declarations.
Neal Norwitz <nnorwitz@gmail.com>
parents: 35939
diff changeset
900 symtable_warn(struct symtable *st, char *msg, int lineno)
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
901 {
61467
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diff changeset
902 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
903 lineno, NULL, NULL) < 0) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
904 if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
905 PyErr_SetString(PyExc_SyntaxError, msg);
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
906 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
907 st->st_cur->ste_col_offset);
61467
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parents: 57378
diff changeset
908 }
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parents: 57378
diff changeset
909 return 0;
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parents: 57378
diff changeset
910 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
911 return 1;
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
912 }
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
913
48725
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parents: 48660
diff changeset
914 /* 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
915 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
916 in symtable_exit_block().
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
917 */
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
918
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
919 static int
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
920 symtable_exit_block(struct symtable *st, void *ast)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
921 {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
922 Py_ssize_t size;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
923
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
924 st->st_cur = NULL;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
925 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
926 if (size) {
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
927 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
928 return 0;
71129
6b3872a11299 fix possibily uninitialized memory usage (closes #12474)
Benjamin Peterson <benjamin@python.org>
parents: 71087
diff changeset
929 if (--size)
6b3872a11299 fix possibily uninitialized memory usage (closes #12474)
Benjamin Peterson <benjamin@python.org>
parents: 71087
diff changeset
930 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
931 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
932 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
933 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
934
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
935 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
936 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
937 void *ast, int lineno, int col_offset)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
938 {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
939 PySTEntryObject *prev = NULL, *ste;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
940
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
941 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
942 if (ste == NULL)
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
943 return 0;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
944 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
945 Py_DECREF(ste);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
946 return 0;
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
947 }
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
948 prev = st->st_cur;
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
949 /* 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
950 Py_DECREF(ste);
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
951 st->st_cur = ste;
65393
3618d9d7902d Merged revisions 85562 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 61467
diff changeset
952 if (block == ModuleBlock)
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
953 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
954 if (prev) {
71087
151142c0c5b1 store the current scope on the stack right away
Benjamin Peterson <benjamin@python.org>
parents: 71082
diff changeset
955 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
956 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
957 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
958 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
959 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
960 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
961
36231
d3f4c467e439 Fix icc warnings: conversion from "long" to "int" may lose significant bits
Neal Norwitz <nnorwitz@gmail.com>
parents: 36226
diff changeset
962 static long
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
963 symtable_lookup(struct symtable *st, PyObject *name)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
964 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
965 PyObject *o;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
966 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
967 if (!mangled)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
968 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
969 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
970 Py_DECREF(mangled);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
971 if (!o)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
972 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
973 return PyLong_AsLong(o);
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
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
976 static int
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
977 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
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 *dict;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
981 long val;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
982 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
983
40965
30e5cb3a55ac Provisional implementation of PEP 3104.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 40898
diff changeset
984
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
985 if (!mangled)
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 dict = st->st_cur->ste_symbols;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
988 if ((o = PyDict_GetItem(dict, mangled))) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
989 val = PyLong_AS_LONG(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
990 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
991 /* 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
992 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
993 PyErr_SyntaxLocationEx(st->st_filename,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
994 st->st_cur->ste_lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
995 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
996 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
997 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
998 val |= flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
999 } else
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1000 val = flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1001 o = PyLong_FromLong(val);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1002 if (o == NULL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1003 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1004 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
1005 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1006 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1007 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1008 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1009
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1010 if (flag & DEF_PARAM) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1011 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
1012 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1013 } else if (flag & DEF_GLOBAL) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1014 /* 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
1015 perhaps only DEF_FREE_GLOBAL */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1016 val = flag;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1017 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
1018 val |= PyLong_AS_LONG(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1019 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1020 o = PyLong_FromLong(val);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1021 if (o == NULL)
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1022 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1023 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
1024 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1025 goto error;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1026 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1027 Py_DECREF(o);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1028 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1029 Py_DECREF(mangled);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1030 return 1;
35779
19d796bd740f Fix private name mangling. The symtable also must do mangles so that
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents: 35766
diff changeset
1031
19d796bd740f Fix private name mangling. The symtable also must do mangles so that
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents: 35766
diff changeset
1032 error:
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1033 Py_DECREF(mangled);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1034 return 0;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1035 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1036
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1037 /* VISIT, VISIT_SEQ and VIST_SEQ_TAIL take an ASDL type as their second argument.
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1038 They use the ASDL name to synthesize the name of the C type and the visit
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1039 function.
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1040
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1041 VISIT_SEQ_TAIL permits the start of an ASDL sequence to be skipped, which is
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1042 useful if the first node in the sequence requires special treatment.
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1043
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1044 VISIT_QUIT macro returns the specified value exiting from the function but
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1045 first adjusts current recursion counter depth.
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1046 */
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1047
80239
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1048 #define VISIT_QUIT(ST, X) \
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1049 return --(ST)->recursion_depth,(X)
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1050
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1051 #define VISIT(ST, TYPE, V) \
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1052 if (!symtable_visit_ ## TYPE((ST), (V))) \
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1053 VISIT_QUIT((ST), 0);
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1054
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1055 #define VISIT_SEQ(ST, TYPE, SEQ) { \
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1056 int i; \
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1057 asdl_seq *seq = (SEQ); /* avoid variable capture */ \
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1058 for (i = 0; i < asdl_seq_LEN(seq); i++) { \
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1059 TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, i); \
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1060 if (!symtable_visit_ ## TYPE((ST), elt)) \
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1061 VISIT_QUIT((ST), 0); \
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1062 } \
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1063 }
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1064
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1065 #define VISIT_SEQ_TAIL(ST, TYPE, SEQ, START) { \
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1066 int i; \
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1067 asdl_seq *seq = (SEQ); /* avoid variable capture */ \
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1068 for (i = (START); i < asdl_seq_LEN(seq); i++) { \
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1069 TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, i); \
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1070 if (!symtable_visit_ ## TYPE((ST), elt)) \
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1071 VISIT_QUIT((ST), 0); \
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1072 } \
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1073 }
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1074
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1075 #define VISIT_KWONLYDEFAULTS(ST, KW_DEFAULTS) { \
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1076 int i = 0; \
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1077 asdl_seq *seq = (KW_DEFAULTS); /* avoid variable capture */ \
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1078 for (i = 0; i < asdl_seq_LEN(seq); i++) { \
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1079 expr_ty elt = (expr_ty)asdl_seq_GET(seq, i); \
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1080 if (!elt) continue; /* can be NULL */ \
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1081 if (!symtable_visit_expr((ST), elt)) \
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1082 VISIT_QUIT((ST), 0); \
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1083 } \
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1084 }
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1085
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1086 static int
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1087 symtable_new_tmpname(struct symtable *st)
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1088 {
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1089 char tmpname[256];
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1090 identifier tmp;
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1091
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1092 PyOS_snprintf(tmpname, sizeof(tmpname), "_[%d]",
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1093 ++st->st_cur->ste_tmpname);
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1094 tmp = PyUnicode_InternFromString(tmpname);
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1095 if (!tmp)
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1096 return 0;
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1097 if (!symtable_add_def(st, tmp, DEF_LOCAL))
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1098 return 0;
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1099 Py_DECREF(tmp);
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1100 return 1;
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1101 }
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1102
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1103
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1104 static int
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1105 symtable_visit_stmt(struct symtable *st, stmt_ty s)
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1106 {
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1107 if (++st->recursion_depth > st->recursion_limit) {
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1108 PyErr_SetString(PyExc_RuntimeError,
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1109 "maximum recursion depth exceeded during compilation");
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1110 VISIT_QUIT(st, 0);
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1111 }
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1112 switch (s->kind) {
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1113 case FunctionDef_kind:
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1114 if (!symtable_add_def(st, s->v.FunctionDef.name, DEF_LOCAL))
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1115 VISIT_QUIT(st, 0);
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1116 if (s->v.FunctionDef.args->defaults)
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1117 VISIT_SEQ(st, expr, s->v.FunctionDef.args->defaults);
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1118 if (s->v.FunctionDef.args->kw_defaults)
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1119 VISIT_KWONLYDEFAULTS(st,
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1120 s->v.FunctionDef.args->kw_defaults);
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1121 if (!symtable_visit_annotations(st, s))
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1122 VISIT_QUIT(st, 0);
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1123 if (s->v.FunctionDef.decorator_list)
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1124 VISIT_SEQ(st, expr, s->v.FunctionDef.decorator_list);
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1125 if (!symtable_enter_block(st, s->v.FunctionDef.name,
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1126 FunctionBlock, (void *)s, s->lineno,
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1127 s->col_offset))
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1128 VISIT_QUIT(st, 0);
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1129 VISIT(st, arguments, s->v.FunctionDef.args);
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1130 VISIT_SEQ(st, stmt, s->v.FunctionDef.body);
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1131 if (!symtable_exit_block(st, s))
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1132 VISIT_QUIT(st, 0);
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1133 break;
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1134 case ClassDef_kind: {
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1135 PyObject *tmp;
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1136 if (!symtable_add_def(st, s->v.ClassDef.name, DEF_LOCAL))
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1137 VISIT_QUIT(st, 0);
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1138 VISIT_SEQ(st, expr, s->v.ClassDef.bases);
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1139 VISIT_SEQ(st, keyword, s->v.ClassDef.keywords);
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1140 if (s->v.ClassDef.starargs)
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1141 VISIT(st, expr, s->v.ClassDef.starargs);
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1142 if (s->v.ClassDef.kwargs)
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1143 VISIT(st, expr, s->v.ClassDef.kwargs);
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1144 if (s->v.ClassDef.decorator_list)
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1145 VISIT_SEQ(st, expr, s->v.ClassDef.decorator_list);
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1146 if (!symtable_enter_block(st, s->v.ClassDef.name, ClassBlock,
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1147 (void *)s, s->lineno, s->col_offset))
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1148 VISIT_QUIT(st, 0);
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1149 if (!GET_IDENTIFIER(__class__) ||
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1150 !symtable_add_def(st, __class__, DEF_LOCAL) ||
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1151 !GET_IDENTIFIER(__locals__) ||
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1152 !symtable_add_def(st, __locals__, DEF_PARAM)) {
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1153 symtable_exit_block(st, s);
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1154 VISIT_QUIT(st, 0);
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1155 }
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1156 tmp = st->st_private;
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1157 st->st_private = s->v.ClassDef.name;
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1158 VISIT_SEQ(st, stmt, s->v.ClassDef.body);
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1159 st->st_private = tmp;
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1160 if (!symtable_exit_block(st, s))
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1161 VISIT_QUIT(st, 0);
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1162 break;
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1163 }
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1164 case Return_kind:
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1165 if (s->v.Return.value) {
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1166 VISIT(st, expr, s->v.Return.value);
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1167 st->st_cur->ste_returns_value = 1;
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1168 }
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1169 break;
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1170 case Delete_kind:
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diff changeset
1171 VISIT_SEQ(st, expr, s->v.Delete.targets);
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diff changeset
1172 break;
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diff changeset
1173 case Assign_kind:
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diff changeset
1174 VISIT_SEQ(st, expr, s->v.Assign.targets);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1175 VISIT(st, expr, s->v.Assign.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1176 break;
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diff changeset
1177 case AugAssign_kind:
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diff changeset
1178 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
1179 VISIT(st, expr, s->v.AugAssign.value);
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parents: 57378
diff changeset
1180 break;
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parents: 57378
diff changeset
1181 case For_kind:
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parents: 57378
diff changeset
1182 VISIT(st, expr, s->v.For.target);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1183 VISIT(st, expr, s->v.For.iter);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1184 VISIT_SEQ(st, stmt, s->v.For.body);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1185 if (s->v.For.orelse)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1186 VISIT_SEQ(st, stmt, s->v.For.orelse);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1187 break;
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parents: 57378
diff changeset
1188 case While_kind:
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diff changeset
1189 VISIT(st, expr, s->v.While.test);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1190 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
1191 if (s->v.While.orelse)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1192 VISIT_SEQ(st, stmt, s->v.While.orelse);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1193 break;
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diff changeset
1194 case If_kind:
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diff changeset
1195 /* XXX if 0: and lookup_yield() hacks */
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parents: 57378
diff changeset
1196 VISIT(st, expr, s->v.If.test);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1197 VISIT_SEQ(st, stmt, s->v.If.body);
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1198 if (s->v.If.orelse)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1199 VISIT_SEQ(st, stmt, s->v.If.orelse);
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parents: 57378
diff changeset
1200 break;
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parents: 57378
diff changeset
1201 case Raise_kind:
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parents: 57378
diff changeset
1202 if (s->v.Raise.exc) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1203 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
1204 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
1205 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
1206 }
61467
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diff changeset
1207 }
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parents: 57378
diff changeset
1208 break;
70499
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1209 case Try_kind:
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1210 VISIT_SEQ(st, stmt, s->v.Try.body);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1211 VISIT_SEQ(st, stmt, s->v.Try.orelse);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1212 VISIT_SEQ(st, excepthandler, s->v.Try.handlers);
e0e663132363 unify TryExcept and TryFinally (closes #12199)
Benjamin Peterson <benjamin@python.org>
parents: 70438
diff changeset
1213 VISIT_SEQ(st, stmt, s->v.Try.finalbody);
61467
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diff changeset
1214 break;
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parents: 57378
diff changeset
1215 case Assert_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1216 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
1217 if (s->v.Assert.msg)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1218 VISIT(st, expr, s->v.Assert.msg);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1219 break;
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parents: 57378
diff changeset
1220 case Import_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1221 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
1222 /* XXX Don't have the lineno available inside
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1223 visit_alias */
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1224 if (st->st_cur->ste_unoptimized && !st->st_cur->ste_opt_lineno) {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1225 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
1226 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
1227 }
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1228 break;
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parents: 57378
diff changeset
1229 case ImportFrom_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1230 VISIT_SEQ(st, alias, s->v.ImportFrom.names);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1231 /* 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
1232 visit_alias */
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1233 if (st->st_cur->ste_unoptimized && !st->st_cur->ste_opt_lineno) {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1234 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
1235 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
1236 }
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1237 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1238 case Global_kind: {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1239 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1240 asdl_seq *seq = s->v.Global.names;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1241 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
1242 identifier name = (identifier)asdl_seq_GET(seq, i);
83803
86783c4fd528 move definition to top of block
Benjamin Peterson <benjamin@python.org>
parents: 83784
diff changeset
1243 long cur;
83784
cd9141a4f999 complain about "global __class__" in a class body (closes #17983)
Benjamin Peterson <benjamin@python.org>
parents: 80589
diff changeset
1244 if (st->st_cur->ste_type == ClassBlock &&
cd9141a4f999 complain about "global __class__" in a class body (closes #17983)
Benjamin Peterson <benjamin@python.org>
parents: 80589
diff changeset
1245 !PyUnicode_CompareWithASCIIString(name, "__class__")) {
cd9141a4f999 complain about "global __class__" in a class body (closes #17983)
Benjamin Peterson <benjamin@python.org>
parents: 80589
diff changeset
1246 PyErr_SetString(PyExc_SyntaxError, "cannot make __class__ global");
cd9141a4f999 complain about "global __class__" in a class body (closes #17983)
Benjamin Peterson <benjamin@python.org>
parents: 80589
diff changeset
1247 PyErr_SyntaxLocationEx(st->st_filename, s->lineno, s->col_offset);
cd9141a4f999 complain about "global __class__" in a class body (closes #17983)
Benjamin Peterson <benjamin@python.org>
parents: 80589
diff changeset
1248 return 0;
cd9141a4f999 complain about "global __class__" in a class body (closes #17983)
Benjamin Peterson <benjamin@python.org>
parents: 80589
diff changeset
1249 }
83803
86783c4fd528 move definition to top of block
Benjamin Peterson <benjamin@python.org>
parents: 83784
diff changeset
1250 cur = symtable_lookup(st, name);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1251 if (cur < 0)
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1252 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1253 if (cur & (DEF_LOCAL | USE)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1254 char buf[256];
80141
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1255 char *c_name = _PyUnicode_AsString(name);
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1256 if (!c_name)
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1257 return 0;
61467
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diff changeset
1258 if (cur & DEF_LOCAL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1259 PyOS_snprintf(buf, sizeof(buf),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1260 GLOBAL_AFTER_ASSIGN,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1261 c_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1262 else
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1263 PyOS_snprintf(buf, sizeof(buf),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1264 GLOBAL_AFTER_USE,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1265 c_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1266 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
1267 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1268 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1269 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
1270 VISIT_QUIT(st, 0);
61467
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parents: 57378
diff changeset
1271 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1272 break;
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parents: 57378
diff changeset
1273 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1274 case Nonlocal_kind: {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1275 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1276 asdl_seq *seq = s->v.Nonlocal.names;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1277 for (i = 0; i < asdl_seq_LEN(seq); i++) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1278 identifier name = (identifier)asdl_seq_GET(seq, i);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1279 long cur = symtable_lookup(st, name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1280 if (cur < 0)
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1281 VISIT_QUIT(st, 0);
61467
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diff changeset
1282 if (cur & (DEF_LOCAL | USE)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1283 char buf[256];
80141
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1284 char *c_name = _PyUnicode_AsString(name);
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1285 if (!c_name)
6964a9b6c1ea check return value of _PyUnicode_AsString
Benjamin Peterson <benjamin@python.org>
parents: 79010
diff changeset
1286 return 0;
61467
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diff changeset
1287 if (cur & DEF_LOCAL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1288 PyOS_snprintf(buf, sizeof(buf),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1289 NONLOCAL_AFTER_ASSIGN,
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parents: 57378
diff changeset
1290 c_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1291 else
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1292 PyOS_snprintf(buf, sizeof(buf),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1293 NONLOCAL_AFTER_USE,
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parents: 57378
diff changeset
1294 c_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1295 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
1296 VISIT_QUIT(st, 0);
61467
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diff changeset
1297 }
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diff changeset
1298 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
1299 VISIT_QUIT(st, 0);
61467
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diff changeset
1300 }
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diff changeset
1301 break;
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diff changeset
1302 }
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diff changeset
1303 case Expr_kind:
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parents: 57378
diff changeset
1304 VISIT(st, expr, s->v.Expr.value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1305 break;
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parents: 57378
diff changeset
1306 case Pass_kind:
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diff changeset
1307 case Break_kind:
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diff changeset
1308 case Continue_kind:
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parents: 57378
diff changeset
1309 /* nothing to do here */
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diff changeset
1310 break;
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1311 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
1312 VISIT_SEQ(st, withitem, s->v.With.items);
61467
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diff changeset
1313 VISIT_SEQ(st, stmt, s->v.With.body);
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diff changeset
1314 break;
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diff changeset
1315 }
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1316 VISIT_QUIT(st, 1);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1317 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1318
61467
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1319 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1320 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
1321 {
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1322 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
1323 PyErr_SetString(PyExc_RuntimeError,
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1324 "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
1325 VISIT_QUIT(st, 0);
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1326 }
61467
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diff changeset
1327 switch (e->kind) {
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diff changeset
1328 case BoolOp_kind:
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diff changeset
1329 VISIT_SEQ(st, expr, e->v.BoolOp.values);
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diff changeset
1330 break;
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diff changeset
1331 case BinOp_kind:
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diff changeset
1332 VISIT(st, expr, e->v.BinOp.left);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1333 VISIT(st, expr, e->v.BinOp.right);
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diff changeset
1334 break;
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diff changeset
1335 case UnaryOp_kind:
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diff changeset
1336 VISIT(st, expr, e->v.UnaryOp.operand);
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diff changeset
1337 break;
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diff changeset
1338 case Lambda_kind: {
61466
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diff changeset
1339 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
1340 VISIT_QUIT(st, 0);
61467
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diff changeset
1341 if (e->v.Lambda.args->defaults)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1342 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
1343 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
1344 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
1345 e->v.Lambda.args->kw_defaults);
61467
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diff changeset
1346 if (!symtable_enter_block(st, lambda,
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1347 FunctionBlock, (void *)e, e->lineno,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1348 e->col_offset))
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1349 VISIT_QUIT(st, 0);
71082
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1350 VISIT(st, arguments, e->v.Lambda.args);
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1351 VISIT(st, expr, e->v.Lambda.body);
61467
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diff changeset
1352 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
1353 VISIT_QUIT(st, 0);
61467
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diff changeset
1354 break;
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diff changeset
1355 }
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diff changeset
1356 case IfExp_kind:
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diff changeset
1357 VISIT(st, expr, e->v.IfExp.test);
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diff changeset
1358 VISIT(st, expr, e->v.IfExp.body);
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diff changeset
1359 VISIT(st, expr, e->v.IfExp.orelse);
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diff changeset
1360 break;
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diff changeset
1361 case Dict_kind:
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diff changeset
1362 VISIT_SEQ(st, expr, e->v.Dict.keys);
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diff changeset
1363 VISIT_SEQ(st, expr, e->v.Dict.values);
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diff changeset
1364 break;
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diff changeset
1365 case Set_kind:
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diff changeset
1366 VISIT_SEQ(st, expr, e->v.Set.elts);
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diff changeset
1367 break;
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diff changeset
1368 case GeneratorExp_kind:
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diff changeset
1369 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
1370 VISIT_QUIT(st, 0);
61467
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1371 break;
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diff changeset
1372 case ListComp_kind:
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diff changeset
1373 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
1374 VISIT_QUIT(st, 0);
61467
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diff changeset
1375 break;
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diff changeset
1376 case SetComp_kind:
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diff changeset
1377 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
1378 VISIT_QUIT(st, 0);
61467
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diff changeset
1379 break;
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diff changeset
1380 case DictComp_kind:
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diff changeset
1381 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
1382 VISIT_QUIT(st, 0);
61467
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diff changeset
1383 break;
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diff changeset
1384 case Yield_kind:
80589
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1385 if (e->v.Yield.value)
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1386 VISIT(st, expr, e->v.Yield.value);
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diff changeset
1387 st->st_cur->ste_generator = 1;
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diff changeset
1388 break;
80589
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1389 case YieldFrom_kind:
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1390 VISIT(st, expr, e->v.YieldFrom.value);
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1391 st->st_cur->ste_generator = 1;
ffb2fa900cb7 Issue #16546: make ast.YieldFrom argument mandatory.
Mark Dickinson <mdickinson@enthought.com>
parents: 80239
diff changeset
1392 break;
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diff changeset
1393 case Compare_kind:
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1394 VISIT(st, expr, e->v.Compare.left);
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diff changeset
1395 VISIT_SEQ(st, expr, e->v.Compare.comparators);
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diff changeset
1396 break;
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diff changeset
1397 case Call_kind:
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diff changeset
1398 VISIT(st, expr, e->v.Call.func);
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diff changeset
1399 VISIT_SEQ(st, expr, e->v.Call.args);
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diff changeset
1400 VISIT_SEQ(st, keyword, e->v.Call.keywords);
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1401 if (e->v.Call.starargs)
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diff changeset
1402 VISIT(st, expr, e->v.Call.starargs);
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diff changeset
1403 if (e->v.Call.kwargs)
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1404 VISIT(st, expr, e->v.Call.kwargs);
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1405 break;
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1406 case Num_kind:
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1407 case Str_kind:
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1408 case Bytes_kind:
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1409 case Ellipsis_kind:
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1410 /* Nothing to do here. */
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1411 break;
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1412 /* The following exprs can be assignment targets. */
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diff changeset
1413 case Attribute_kind:
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1414 VISIT(st, expr, e->v.Attribute.value);
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1415 break;
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1416 case Subscript_kind:
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diff changeset
1417 VISIT(st, expr, e->v.Subscript.value);
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diff changeset
1418 VISIT(st, slice, e->v.Subscript.slice);
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diff changeset
1419 break;
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diff changeset
1420 case Starred_kind:
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1421 VISIT(st, expr, e->v.Starred.value);
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diff changeset
1422 break;
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diff changeset
1423 case Name_kind:
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1424 if (!symtable_add_def(st, e->v.Name.id,
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1425 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
1426 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1427 /* 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
1428 if (e->v.Name.ctx == Load &&
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1429 st->st_cur->ste_type == FunctionBlock &&
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1430 !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
1431 if (!GET_IDENTIFIER(__class__) ||
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1432 !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
1433 VISIT_QUIT(st, 0);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1434 }
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 /* 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
1437 case List_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1438 VISIT_SEQ(st, expr, e->v.List.elts);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1439 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1440 case Tuple_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1441 VISIT_SEQ(st, expr, e->v.Tuple.elts);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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 }
80239
ab02cd145f56 Issue #5765: Apply a hard recursion limit in the compiler
Nick Coghlan <ncoghlan@gmail.com>
parents: 80141
diff changeset
1444 VISIT_QUIT(st, 1);
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1445 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1446
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1447 static int
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1448 symtable_implicit_arg(struct symtable *st, int pos)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1449 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1450 PyObject *id = PyUnicode_FromFormat(".%d", pos);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1451 if (id == NULL)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1452 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1453 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
1454 Py_DECREF(id);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1455 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1456 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1457 Py_DECREF(id);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1458 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1459 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1460
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1461 static int
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1462 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
1463 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1464 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1465
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1466 if (!args)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1467 return -1;
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1468
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1469 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
1470 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
1471 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
1472 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1473 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1474
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1475 return 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
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1478 static int
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1479 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
1480 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1481 int i;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1482
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1483 if (!args)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1484 return -1;
41717
9ad84070b22d Merged revisions 55328-55341 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 41699
diff changeset
1485
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1486 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
1487 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
1488 if (arg->annotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1489 VISIT(st, expr, arg->annotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1490 }
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1491
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1492 return 1;
40529
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1493 }
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1494
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1495 static int
54cd47788811 PEP 3107 - Function Annotations thanks to Tony Lownds
Neal Norwitz <nnorwitz@gmail.com>
parents: 40215
diff changeset
1496 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
1497 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1498 arguments_ty a = s->v.FunctionDef.args;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1499
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1500 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
1501 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1502 if (a->varargannotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1503 VISIT(st, expr, a->varargannotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1504 if (a->kwargannotation)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1505 VISIT(st, expr, a->kwargannotation);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1506 if (a->kwonlyargs && !symtable_visit_argannotations(st, a->kwonlyargs))
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1507 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1508 if (s->v.FunctionDef.returns)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1509 VISIT(st, expr, s->v.FunctionDef.returns);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1510 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1511 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1512
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1513 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1514 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
1515 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1516 /* skip default arguments inside function block
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1517 XXX should ast be different?
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1518 */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1519 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
1520 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1521 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
1522 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1523 if (a->vararg) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1524 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
1525 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1526 st->st_cur->ste_varargs = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1527 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1528 if (a->kwarg) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1529 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
1530 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1531 st->st_cur->ste_varkeywords = 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1532 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1533 return 1;
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1534 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1535
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1536
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1537 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1538 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
1539 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1540 if (eh->v.ExceptHandler.type)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1541 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
1542 if (eh->v.ExceptHandler.name)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1543 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
1544 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1545 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
1546 return 1;
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1547 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1548
70438
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1549 static int
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1550 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
1551 {
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1552 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
1553 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
1554 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
1555 }
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1556 return 1;
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1557 }
9b11cc4e2918 reflect with statements with multiple items in the AST (closes #12106)
Benjamin Peterson <benjamin@python.org>
parents: 69231
diff changeset
1558
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1559
61467
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Antoine Pitrou <solipsis@pitrou.net>
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diff changeset
1560 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1561 symtable_visit_alias(struct symtable *st, alias_ty a)
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1562 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1563 /* 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
1564 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
1565 dotted package name (e.g. spam.eggs)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1566 */
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parents: 57378
diff changeset
1567 PyObject *store_name;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1568 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
1569 Py_ssize_t dot = PyUnicode_FindChar(name, '.', 0,
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1570 PyUnicode_GET_LENGTH(name), 1);
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1571 if (dot != -1) {
8beaa9a37387 Implement PEP 393.
Martin v. Löwis <martin@v.loewis.de>
parents: 71129
diff changeset
1572 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
1573 if (!store_name)
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1574 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1575 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1576 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1577 store_name = name;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1578 Py_INCREF(store_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1579 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1580 if (PyUnicode_CompareWithASCIIString(name, "*")) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1581 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
1582 Py_DECREF(store_name);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1583 return r;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1584 }
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parents: 57378
diff changeset
1585 else {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1586 if (st->st_cur->ste_type != ModuleBlock) {
70919
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1587 int lineno = st->st_cur->ste_lineno;
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1588 int col_offset = st->st_cur->ste_col_offset;
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1589 PyErr_SetString(PyExc_SyntaxError, IMPORT_STAR_WARNING);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1590 PyErr_SyntaxLocationEx(st->st_filename, lineno, col_offset);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1591 Py_DECREF(store_name);
275862274567 fix indentation
Benjamin Peterson <benjamin@python.org>
parents: 68257
diff changeset
1592 return 0;
61467
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Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1593 }
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parents: 57378
diff changeset
1594 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
1595 Py_DECREF(store_name);
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parents: 57378
diff changeset
1596 return 1;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1597 }
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1598 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1599
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1600
61467
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parents: 57378
diff changeset
1601 static int
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1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1602 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
1603 {
61467
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parents: 57378
diff changeset
1604 VISIT(st, expr, lc->target);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1605 VISIT(st, expr, lc->iter);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1606 VISIT_SEQ(st, expr, lc->ifs);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1607 return 1;
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1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1608 }
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1609
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1610
61467
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diff changeset
1611 static int
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1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1612 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
1613 {
61467
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parents: 57378
diff changeset
1614 VISIT(st, expr, k->value);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1615 return 1;
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1616 }
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1617
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1618
61467
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parents: 57378
diff changeset
1619 static int
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1620 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
1621 {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1622 switch (s->kind) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1623 case Slice_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1624 if (s->v.Slice.lower)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1625 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
1626 if (s->v.Slice.upper)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1627 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
1628 if (s->v.Slice.step)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1629 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
1630 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1631 case ExtSlice_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1632 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
1633 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1634 case Index_kind:
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1635 VISIT(st, expr, s->v.Index.value)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1636 break;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1637 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1638 return 1;
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1639 }
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1640
61467
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diff changeset
1641 static int
41464
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
1642 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
1643 identifier scope_name, asdl_seq *generators,
090588a17490 Merged revisions 56154-56264 via svnmerge from
Guido van Rossum <guido@python.org>
parents: 42084
diff changeset
1644 expr_ty elt, expr_ty value)
35742
1c4d192f1568 Merge ast-branch to head
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 32121
diff changeset
1645 {
61467
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parents: 57378
diff changeset
1646 int is_generator = (e->kind == GeneratorExp_kind);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1647 int needs_tmp = !is_generator;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1648 comprehension_ty outermost = ((comprehension_ty)
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1649 asdl_seq_GET(generators, 0));
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1650 /* Outermost iterator is evaluated in current scope */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1651 VISIT(st, expr, outermost->iter);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1652 /* Create comprehension scope for the rest */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1653 if (!scope_name ||
64861
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1654 !symtable_enter_block(st, scope_name, FunctionBlock, (void *)e,
861c35cef7aa add column offset to all syntax errors
Benjamin Peterson <benjamin@python.org>
parents: 63114
diff changeset
1655 e->lineno, e->col_offset)) {
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1656 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1657 }
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1658 st->st_cur->ste_generator = is_generator;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1659 /* Outermost iter is received as an argument */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1660 if (!symtable_implicit_arg(st, 0)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1661 symtable_exit_block(st, (void *)e);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1662 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1663 }
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parents: 57378
diff changeset
1664 /* Allocate temporary name if needed */
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1665 if (needs_tmp && !symtable_new_tmpname(st)) {
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1666 symtable_exit_block(st, (void *)e);
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1667 return 0;
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 57378
diff changeset
1668 }
71082
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1669 VISIT(st, expr, outermost->target);
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1670 VISIT_SEQ(st, expr, outermost->ifs);
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1671 VISIT_SEQ_TAIL(st, comprehension, generators, 1);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1672 if (value)
71082
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1673 VISIT(st, expr, value);
099c7b0f24a6 remove VISIT_*_IN_BLOCK macros
Benjamin Peterson <benjamin@python.org>
parents: 70920
diff changeset
1674 VISIT(st, expr, elt);
61467
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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diff changeset
1675 return symtable_exit_block(st, (void *)e);
35742
1c4d192f1568 Merge ast-branch to head
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parents: 32121
diff changeset
1676 }
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Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
1677
61467
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parents: 57378
diff changeset
1678 static int
41464
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Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
1679 symtable_visit_genexp(struct symtable *st, expr_ty e)
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
1680 {
61467
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diff changeset
1681 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(genexpr),
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1682 e->v.GeneratorExp.generators,
f197407bdba2 Recorded merge of revisions 81032 via svnmerge from
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parents: 57378
diff changeset
1683 e->v.GeneratorExp.elt, NULL);
41464
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
1684 }
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
1685
61467
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diff changeset
1686 static int
41464
060c79f6d919 Hide list comp variables and support set comprehensions
Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
diff changeset
1687 symtable_visit_listcomp(struct symtable *st, expr_ty e)
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1688 {
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1689 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(listcomp),
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1690 e->v.ListComp.generators,
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1691 e->v.ListComp.elt, NULL);
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1692 }
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1693
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1694 static int
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parents: 41226
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1695 symtable_visit_setcomp(struct symtable *st, expr_ty e)
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Nick Coghlan <ncoghlan@gmail.com>
parents: 41226
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1696 {
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1697 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(setcomp),
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1698 e->v.SetComp.generators,
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1699 e->v.SetComp.elt, NULL);
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1700 }
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1701
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1702 static int
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1703 symtable_visit_dictcomp(struct symtable *st, expr_ty e)
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1704 {
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1705 return symtable_handle_comprehension(st, e, GET_IDENTIFIER(dictcomp),
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1706 e->v.DictComp.generators,
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1707 e->v.DictComp.key,
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1708 e->v.DictComp.value);
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1709 }