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#endif
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#endif
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#ifdef TRE_USE_SYSTEM_WCTYPE
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#ifdef TRE_USE_SYSTEM_WCTYPE
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/* Use system provided iswctype() and wctype(). */
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/* Use system provided iswctype() and wctype(). */
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typedef wctype_t tre_ctype_t;
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typedef wctype_t tre_ctype_t;
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#define tre_isctype iswctype
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#define tre_isctype(c, type) iswctype(c, type)
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#define tre_ctype   wctype
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#define tre_ctype(s)   wctype(s)
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#else /* !TRE_USE_SYSTEM_WCTYPE */
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#else /* !TRE_USE_SYSTEM_WCTYPE */
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/* Define our own versions of iswctype() and wctype(). */
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/* Define our own versions of iswctype() and wctype(). */
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typedef int (*tre_ctype_t)(tre_cint_t);
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typedef int (*tre_ctype_t)(tre_cint_t);
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#define tre_isctype(c, type) ( (type)(c) )
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#define tre_isctype(c, type) ( (type)(c) )
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tre_ctype_t tre_ctype(const char *name);
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tre_ctype_t tre_ctype(const char *name);
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   the terminator is a transition with NULL `state'. */
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   the terminator is a transition with NULL `state'. */
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typedef struct tnfa_transition tre_tnfa_transition_t;
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typedef struct tnfa_transition tre_tnfa_transition_t;
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struct tnfa_transition {
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struct tnfa_transition {
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  /* Range of accepted characters. */
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  /* Range of accepted characters. */
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#if 0 /* [i_a] must be able to carry the full span of all [Unicode] character codes *PLUS* these 'specials': TAG, PARAMETER, BACKREF, ASSERTION and EMPTY */
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  tre_cint_t code_min;
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  tre_cint_t code_min;
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  tre_cint_t code_max;
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  tre_cint_t code_max;
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#else
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  int code_min;
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  int code_max;
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#endif
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  /* Pointer to the destination state. */
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  /* Pointer to the destination state. */
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  tre_tnfa_transition_t *state;
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  tre_tnfa_transition_t *state;
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  /* ID number of the destination state. */
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  /* ID number of the destination state. */
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  int state_id;
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  int state_id;
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  /* -1 terminated array of tags (or NULL). */
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  /* -1 terminated array of tags (or NULL). */
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  /* Assertion bitmap. */
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  /* Assertion bitmap. */
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  int assertions;
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  int assertions;
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  /* Assertion parameters. */
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  /* Assertion parameters. */
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  union {
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  union {
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    /* Character class assertion. */
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    /* Character class assertion. */
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    tre_ctype_t class;
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    tre_ctype_t classt;
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    /* Back reference assertion. */
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    /* Back reference assertion. */
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    int backref;
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    int backref;
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  } u;
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  } u;
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  /* Negative character class assertions. */
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  /* Negative character class assertions. */
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  tre_ctype_t *neg_classes;
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  tre_ctype_t *neg_classes;