Mercurial > cpython-lru_cache-weakref

annotate Parser/parser.h @ 87690:66c1c9f32567 default tip

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents ca5f2f960617
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #ifndef Py_PARSER_H
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2 #define Py_PARSER_H
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3 #ifdef __cplusplus
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4 extern "C" {
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5 #endif
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6
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7
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8 /* Parser interface */
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9
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10 #define MAXSTACK 1500
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12 typedef struct {
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13 int s_state; /* State in current DFA */
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14 dfa *s_dfa; /* Current DFA */
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15 struct _node *s_parent; /* Where to add next node */
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16 } stackentry;
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18 typedef struct {
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19 stackentry *s_top; /* Top entry */
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20 stackentry s_base[MAXSTACK];/* Array of stack entries */
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21 /* NB The stack grows down */
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22 } stack;
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24 typedef struct {
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25 stack p_stack; /* Stack of parser states */
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26 grammar *p_grammar; /* Grammar to use */
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27 node *p_tree; /* Top of parse tree */
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28 #ifdef PY_PARSER_REQUIRES_FUTURE_KEYWORD
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29 unsigned long p_flags; /* see co_flags in Include/code.h */
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30 #endif
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31 } parser_state;
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33 parser_state *PyParser_New(grammar *g, int start);
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34 void PyParser_Delete(parser_state *ps);
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35 int PyParser_AddToken(parser_state *ps, int type, char *str, int lineno, int col_offset,
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36 int *expected_ret);
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37 void PyGrammar_AddAccelerators(grammar *g);
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38
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39 #ifdef __cplusplus
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40 }
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41 #endif
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42 #endif /* !Py_PARSER_H */