/* | |
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org) | |
* Copyright (C) 2003, 2007, 2008 Apple Inc. All Rights Reserved. | |
* | |
* This library is free software; you can redistribute it and/or | |
* modify it under the terms of the GNU Lesser General Public | |
* License as published by the Free Software Foundation; either | |
* version 2 of the License, or (at your option) any later version. | |
* | |
* This library is distributed in the hope that it will be useful, | |
* but WITHOUT ANY WARRANTY; without even the implied warranty of | |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
* Lesser General Public License for more details. | |
* | |
* You should have received a copy of the GNU Lesser General Public | |
* License along with this library; if not, write to the Free Software | |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
* | |
*/ | |
#ifndef RegExpConstructor_h | |
#define RegExpConstructor_h | |
#include "InternalFunction.h" | |
#include "RegExp.h" | |
#include <wtf/OwnPtr.h> | |
namespace JSC { | |
class RegExp; | |
class RegExpPrototype; | |
struct RegExpConstructorPrivate; | |
struct RegExpConstructorPrivate : FastAllocBase { | |
// Global search cache / settings | |
RegExpConstructorPrivate() | |
: lastNumSubPatterns(0) | |
, multiline(false) | |
, lastOvectorIndex(0) | |
{ | |
} | |
const Vector<int, 32>& lastOvector() const { return ovector[lastOvectorIndex]; } | |
Vector<int, 32>& lastOvector() { return ovector[lastOvectorIndex]; } | |
Vector<int, 32>& tempOvector() { return ovector[lastOvectorIndex ? 0 : 1]; } | |
void changeLastOvector() { lastOvectorIndex = lastOvectorIndex ? 0 : 1; } | |
UString input; | |
UString lastInput; | |
Vector<int, 32> ovector[2]; | |
unsigned lastNumSubPatterns : 30; | |
bool multiline : 1; | |
unsigned lastOvectorIndex : 1; | |
}; | |
class RegExpConstructor : public InternalFunction { | |
public: | |
RegExpConstructor(ExecState*, NonNullPassRefPtr<Structure>, RegExpPrototype*); | |
static PassRefPtr<Structure> createStructure(JSValue prototype) | |
{ | |
return Structure::create(prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount); | |
} | |
virtual void put(ExecState*, const Identifier& propertyName, JSValue, PutPropertySlot&); | |
virtual bool getOwnPropertySlot(ExecState*, const Identifier& propertyName, PropertySlot&); | |
virtual bool getOwnPropertyDescriptor(ExecState*, const Identifier&, PropertyDescriptor&); | |
static const ClassInfo info; | |
void performMatch(RegExp*, const UString&, int startOffset, int& position, int& length, int** ovector = 0); | |
JSObject* arrayOfMatches(ExecState*) const; | |
void setInput(const UString&); | |
const UString& input() const; | |
void setMultiline(bool); | |
bool multiline() const; | |
JSValue getBackref(ExecState*, unsigned) const; | |
JSValue getLastParen(ExecState*) const; | |
JSValue getLeftContext(ExecState*) const; | |
JSValue getRightContext(ExecState*) const; | |
protected: | |
static const unsigned StructureFlags = OverridesGetOwnPropertySlot | ImplementsHasInstance | InternalFunction::StructureFlags; | |
private: | |
virtual ConstructType getConstructData(ConstructData&); | |
virtual CallType getCallData(CallData&); | |
virtual const ClassInfo* classInfo() const { return &info; } | |
OwnPtr<RegExpConstructorPrivate> d; | |
}; | |
RegExpConstructor* asRegExpConstructor(JSValue); | |
JSObject* constructRegExp(ExecState*, const ArgList&); | |
inline RegExpConstructor* asRegExpConstructor(JSValue value) | |
{ | |
ASSERT(asObject(value)->inherits(&RegExpConstructor::info)); | |
return static_cast<RegExpConstructor*>(asObject(value)); | |
} | |
/* | |
To facilitate result caching, exec(), test(), match(), search(), and replace() dipatch regular | |
expression matching through the performMatch function. We use cached results to calculate, | |
e.g., RegExp.lastMatch and RegExp.leftParen. | |
*/ | |
inline void RegExpConstructor::performMatch(RegExp* r, const UString& s, int startOffset, int& position, int& length, int** ovector) | |
{ | |
position = r->match(s, startOffset, &d->tempOvector()); | |
if (ovector) | |
*ovector = d->tempOvector().data(); | |
if (position != -1) { | |
ASSERT(!d->tempOvector().isEmpty()); | |
length = d->tempOvector()[1] - d->tempOvector()[0]; | |
d->input = s; | |
d->lastInput = s; | |
d->changeLastOvector(); | |
d->lastNumSubPatterns = r->numSubpatterns(); | |
} | |
} | |
} // namespace JSC | |
#endif // RegExpConstructor_h |