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/*
* Copyright (c) 1998, 1999 Henry Spencer. All rights reserved.
*
* Development of this software was funded, in part, by Cray Research Inc.,
* UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
* Corporation, none of whom are responsible for the results. The author
* thanks all of them.
*
* Redistribution and use in source and binary forms - with or without
* modification - are permitted for any purpose, provided that redistributions
* in source form retain this entire copyright notice and indicate the origin
* and nature of any modifications.
*
* I'd appreciate being given credit for this package in the documentation of
* software which uses it, but that is not a requirement.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Headers if any.
*/
#include "regex.h"
/*
* Overrides for regguts.h definitions, if any.
*/
#define FUNCPTR(name, args) (*name)args
#define MALLOC(n) VS(attemptckalloc(n))
#define FREE(p) ckfree(VS(p))
#define REALLOC(p,n) VS(attemptckrealloc(VS(p),n))
/*
* Do not insert extras between the "begin" and "end" lines - this chunk is
* automatically extracted to be fitted into regex.h.
*/
/* --- begin --- */
/* Ensure certain things don't sneak in from system headers. */
#ifdef __REG_WIDE_T
#undef __REG_WIDE_T
#endif
#ifdef __REG_WIDE_COMPILE
#undef __REG_WIDE_COMPILE
#endif
#ifdef __REG_WIDE_EXEC
#undef __REG_WIDE_EXEC
#endif
#ifdef __REG_REGOFF_T
#undef __REG_REGOFF_T
#endif
#ifdef __REG_NOFRONT
#undef __REG_NOFRONT
#endif
#ifdef __REG_NOCHAR
#undef __REG_NOCHAR
#endif
/* Interface types */
#define __REG_WIDE_T Tcl_UniChar
#define __REG_REGOFF_T long /* Not really right, but good enough... */
/* Names and declarations */
#define __REG_WIDE_COMPILE TclReComp
#define __REG_WIDE_EXEC TclReExec
#define __REG_NOFRONT /* Don't want regcomp() and regexec() */
#define __REG_NOCHAR /* Or the char versions */
#define regfree TclReFree
#define regerror TclReError
/* --- end --- */
/*
* Internal character type and related.
*/
typedef Tcl_UniChar chr; /* The type itself. */
typedef int pchr; /* What it promotes to. */
typedef unsigned uchr; /* Unsigned type that will hold a chr. */
typedef int celt; /* Type to hold chr, or NOCELT */
#define NOCELT (-1) /* Celt value which is not valid chr */
#define CHR(c) (UCHAR(c)) /* Turn char literal into chr literal */
#define DIGITVAL(c) ((c)-'0') /* Turn chr digit into its value */
#if TCL_UTF_MAX > 4
#define CHRBITS 32 /* Bits in a chr; must not use sizeof */
#define CHR_MIN 0x00000000 /* Smallest and largest chr; the value */
#define CHR_MAX 0xFFFFFFFF /* CHR_MAX-CHR_MIN+1 should fit in uchr */
#else
#define CHRBITS 16 /* Bits in a chr; must not use sizeof */
#define CHR_MIN 0x0000 /* Smallest and largest chr; the value */
#define CHR_MAX 0xFFFF /* CHR_MAX-CHR_MIN+1 should fit in uchr */
#endif
/*
* Functions operating on chr.
*/
#define iscalnum(x) Tcl_UniCharIsAlnum(x)
#define iscalpha(x) Tcl_UniCharIsAlpha(x)
#define iscdigit(x) Tcl_UniCharIsDigit(x)
#define iscspace(x) Tcl_UniCharIsSpace(x)
/*
* Name the external functions.
*/
#define compile TclReComp
#define exec TclReExec
/*
& Enable/disable debugging code (by whether REG_DEBUG is defined or not).
*/
#if 0 /* No debug unless requested by makefile. */
#define REG_DEBUG /* */
#endif
/*
* Method of allocating a local workspace. We used a thread-specific data
* space to store this because the regular expression engine is never
* reentered from the same thread; it doesn't make any callbacks.
*/
#if 1
#define AllocVars(vPtr) \
static Tcl_ThreadDataKey varsKey; \
struct vars *vPtr = (struct vars *) \
Tcl_GetThreadData(&varsKey, sizeof(struct vars))
#else
/*
* This strategy for allocating workspace is "more proper" in some sense, but
* quite a bit slower. Using TSD (as above) leads to code that is quite a bit
* faster in practice (measured!)
*/
#define AllocVars(vPtr) \
struct vars *vPtr = (struct vars *) MALLOC(sizeof(struct vars))
#define FreeVars(vPtr) \
FREE(vPtr)
#endif
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/
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