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91 lines
2.4 KiB
91 lines
2.4 KiB
/* |
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* Secret Labs' Regular Expression Engine |
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* |
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* regular expression matching engine |
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* |
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* Copyright (c) 1997-2001 by Secret Labs AB. All rights reserved. |
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* |
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* See the _sre.c file for information on usage and redistribution. |
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*/ |
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#ifndef SRE_INCLUDED |
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#define SRE_INCLUDED |
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#include "sre_constants.h" |
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/* size of a code word (must be unsigned short or larger, and |
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large enough to hold a Py_UNICODE character) */ |
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#ifdef Py_UNICODE_WIDE |
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#define SRE_CODE unsigned long |
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#else |
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#define SRE_CODE unsigned short |
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#endif |
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typedef struct { |
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PyObject_VAR_HEAD |
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int groups; /* must be first! */ |
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PyObject* groupindex; |
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PyObject* indexgroup; |
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/* compatibility */ |
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PyObject* pattern; /* pattern source (or None) */ |
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int flags; /* flags used when compiling pattern source */ |
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/* pattern code */ |
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int codesize; |
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SRE_CODE code[1]; |
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} PatternObject; |
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#define PatternObject_GetCode(o) (((PatternObject*)(o))->code) |
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typedef struct { |
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PyObject_VAR_HEAD |
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PyObject* string; /* link to the target string (must be first) */ |
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PyObject* regs; /* cached list of matching spans */ |
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PatternObject* pattern; /* link to the regex (pattern) object */ |
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int pos, endpos; /* current target slice */ |
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int lastindex; /* last index marker seen by the engine (-1 if none) */ |
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int groups; /* number of groups (start/end marks) */ |
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int mark[1]; |
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} MatchObject; |
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typedef unsigned int (*SRE_TOLOWER_HOOK)(unsigned int ch); |
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/* FIXME: <fl> shouldn't be a constant, really... */ |
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#define SRE_MARK_SIZE 200 |
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typedef struct SRE_REPEAT_T { |
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int count; |
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SRE_CODE* pattern; /* points to REPEAT operator arguments */ |
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struct SRE_REPEAT_T *prev; /* points to previous repeat context */ |
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} SRE_REPEAT; |
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typedef struct { |
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/* string pointers */ |
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void* ptr; /* current position (also end of current slice) */ |
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void* beginning; /* start of original string */ |
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void* start; /* start of current slice */ |
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void* end; /* end of original string */ |
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/* attributes for the match object */ |
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PyObject* string; |
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int pos, endpos; |
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/* character size */ |
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int charsize; |
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/* registers */ |
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int lastindex; |
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int lastmark; |
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void* mark[SRE_MARK_SIZE]; |
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/* dynamically allocated stuff */ |
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void** mark_stack; |
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int mark_stack_size; |
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int mark_stack_base; |
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SRE_REPEAT *repeat; /* current repeat context */ |
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/* hooks */ |
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SRE_TOLOWER_HOOK lower; |
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} SRE_STATE; |
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typedef struct { |
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PyObject_HEAD |
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PyObject* pattern; |
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SRE_STATE state; |
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} ScannerObject; |
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#endif
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