/* 
 * 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.
 *
 * RCS: @(#) Id
 */

#ifndef _TCLREGEXP
#define _TCLREGEXP

#include "regexTcl.h"

#ifdef BUILD_tcl
# undef TCL_STORAGE_CLASS
# define TCL_STORAGE_CLASS DLLEXPORT
#endif

/*
 * 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. */
    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). */
    int refCount;               /* Count of number of references to this
                                 * compiled regexp. */
} TclRegexp;

#endif /* _TCLREGEXP */
