188 lines
6.8 KiB
C
188 lines
6.8 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef jsregexp_h___
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#define jsregexp_h___
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/*
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* JS regular expression interface.
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*/
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#include <stddef.h>
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#include "jspubtd.h"
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#include "jsstr.h"
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#ifdef JS_THREADSAFE
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#include "jsdhash.h"
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#endif
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struct JSRegExpStatics {
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JSString *input; /* input string to match (perl $_, GC root) */
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JSString *pendingInput; /* pending input string to match */
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JSBool multiline; /* whether input contains newlines (perl $*) */
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uint16 parenCount; /* number of valid elements in parens[] */
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uint16 moreLength; /* number of allocated elements in moreParens */
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JSSubString parens[9]; /* last set of parens matched (perl $1, $2) */
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JSSubString *moreParens; /* null or realloc'd vector for $10, etc. */
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JSSubString lastMatch; /* last string matched (perl $&) */
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JSSubString lastParen; /* last paren matched (perl $+) */
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JSSubString leftContext; /* input to left of last match (perl $`) */
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JSSubString rightContext; /* input to right of last match (perl $') */
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};
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void
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js_RegExpStatics_clear(JSContext *cx, JSRegExpStatics *res);
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/*
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* This struct holds a bitmap representation of a class from a regexp.
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* There's a list of these referenced by the classList field in the JSRegExp
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* struct below. The initial state has startIndex set to the offset in the
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* original regexp source of the beginning of the class contents. The first
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* use of the class converts the source representation into a bitmap.
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*
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*/
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typedef struct RECharSet {
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JSPackedBool converted;
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JSPackedBool sense;
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uint16 length;
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union {
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uint8 *bits;
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struct {
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size_t startIndex;
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size_t length;
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} src;
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} u;
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} RECharSet;
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/*
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* This macro is safe because moreParens is guaranteed to be allocated and big
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* enough to hold parenCount, or else be null when parenCount is 0.
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*/
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#define REGEXP_PAREN_SUBSTRING(res, num) \
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(((jsuint)(num) < (jsuint)(res)->parenCount) \
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? ((jsuint)(num) < 9) \
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? &(res)->parens[num] \
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: &(res)->moreParens[(num) - 9] \
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: &js_EmptySubString)
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typedef struct RENode RENode;
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struct JSRegExp {
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jsrefcount nrefs; /* reference count */
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uint16 flags; /* flags, see jsapi.h's JSREG_* defines */
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uint16 cloneIndex; /* index in fp->vars or funobj->slots of
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cloned regexp object */
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size_t parenCount; /* number of parenthesized submatches */
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size_t classCount; /* count [...] bitmaps */
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RECharSet *classList; /* list of [...] bitmaps */
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JSString *source; /* locked source string, sans // */
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jsbytecode program[1]; /* regular expression bytecode */
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};
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extern JSRegExp *
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js_NewRegExp(JSContext *cx, JSTokenStream *ts,
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JSString *str, uintN flags, JSBool flat);
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extern JSRegExp *
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js_NewRegExpOpt(JSContext *cx, JSTokenStream *ts,
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JSString *str, JSString *opt, JSBool flat);
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#define HOLD_REGEXP(cx, re) JS_ATOMIC_INCREMENT(&(re)->nrefs)
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#define DROP_REGEXP(cx, re) js_DestroyRegExp(cx, re)
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extern void
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js_DestroyRegExp(JSContext *cx, JSRegExp *re);
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/*
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* Execute re on input str at *indexp, returning null in *rval on mismatch.
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* On match, return true if test is true, otherwise return an array object.
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* Update *indexp and cx->regExpStatics always on match.
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*/
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extern JSBool
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js_ExecuteRegExp(JSContext *cx, JSRegExp *re, JSString *str, size_t *indexp,
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JSBool test, jsval *rval);
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/*
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* These two add and remove GC roots, respectively, so their calls must be
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* well-ordered.
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*/
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extern JSBool
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js_InitRegExpStatics(JSContext *cx, JSRegExpStatics *res);
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extern void
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js_FreeRegExpStatics(JSContext *cx, JSRegExpStatics *res);
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#define JSVAL_IS_REGEXP(cx, v) \
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(JSVAL_IS_OBJECT(v) && JSVAL_TO_OBJECT(v) && \
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OBJ_GET_CLASS(cx, JSVAL_TO_OBJECT(v)) == &js_RegExpClass)
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extern JSClass js_RegExpClass;
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extern JSObject *
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js_InitRegExpClass(JSContext *cx, JSObject *obj);
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/*
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* Export js_regexp_toString to the decompiler.
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*/
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extern JSBool
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js_regexp_toString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
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jsval *rval);
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/*
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* Create, serialize/deserialize, or clone a RegExp object.
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*/
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extern JSObject *
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js_NewRegExpObject(JSContext *cx, JSTokenStream *ts,
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jschar *chars, size_t length, uintN flags);
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extern JSBool
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js_XDRRegExp(JSXDRState *xdr, JSObject **objp);
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extern JSObject *
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js_CloneRegExpObject(JSContext *cx, JSObject *obj, JSObject *parent);
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/*
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* Get and set the per-object (clone or clone-parent) lastIndex slot.
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*/
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extern JSBool
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js_GetLastIndex(JSContext *cx, JSObject *obj, jsdouble *lastIndex);
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extern JSBool
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js_SetLastIndex(JSContext *cx, JSObject *obj, jsdouble lastIndex);
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#endif /* jsregexp_h___ */
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