/*
 * tclRegexp.h --
 *
 *	This file contains definitions used internally by Henry Spencer's
 *	regular expression code.
 *
 * Copyright (c) 1998 by Sun Microsystems, Inc.
 * Copyright (c) 1998-1999 by Scriptics Corporation.
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#ifndef _TCLREGEXP
#define _TCLREGEXP

#include "regex.h"

/*
 * The TclRegexp structure encapsulates a compiled regex_t, the flags that
 * were used to compile it, and an array of pointers that are used to indicate
 * subexpressions after a call to Tcl_RegExpExec. Note that the string and
 * objPtr are mutually exclusive. These values are needed by Tcl_RegExpRange
 * in order to return pointers into the original string.
 */

typedef struct TclRegexp {
    int flags;			/* Regexp compile flags. */
    regex_t re;			/* Compiled re, includes number of
				 * subexpressions. */
    const char *string;		/* Last string passed to Tcl_RegExpExec. */
    Tcl_Obj *objPtr;		/* Last object passed to Tcl_RegExpExecObj. */
    Tcl_Obj *globObjPtr;	/* Glob pattern rep of RE or NULL if none. */
    regmatch_t *matches;	/* Array of indices into the Tcl_UniChar
				 * representation of the last string matched
				 * with this regexp to indicate the location
				 * of subexpressions. */
    rm_detail_t details;	/* Detailed information on match (currently
				 * used only for REG_EXPECT). */
    unsigned int refCount;	/* Count of number of references to this
				 * compiled regexp. */
} TclRegexp;

#endif /* _TCLREGEXP */

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