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/*
* Copyright (C) 2012-2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. OR
* CONTRIBUTORS 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.
*/
#include "config.h"
#include "RegExpMatchesArray.h"
namespace JSC {
JSArray* createEmptyRegExpMatchesArray(JSGlobalObject* globalObject, JSString* input, RegExp* regExp)
{
VM& vm = globalObject->vm();
JSArray* array;
// FIXME: This should handle array allocation errors gracefully.
// https://bugs.webkit.org/show_bug.cgi?id=155144
GCDeferralContext deferralContext(vm.heap);
if (UNLIKELY(globalObject->isHavingABadTime())) {
ObjectInitializationScope scope(vm);
array = JSArray::tryCreateUninitializedRestricted(scope, &deferralContext, globalObject->regExpMatchesArrayStructure(), regExp->numSubpatterns() + 1);
// FIXME: we should probably throw an out of memory error here, but
// when making this change we should check that all clients of this
// function will correctly handle an exception being thrown from here.
// https://bugs.webkit.org/show_bug.cgi?id=169786
RELEASE_ASSERT(array);
array->initializeIndexWithoutBarrier(scope, 0, jsEmptyString(&vm));
if (unsigned numSubpatterns = regExp->numSubpatterns()) {
for (unsigned i = 1; i <= numSubpatterns; ++i)
array->initializeIndexWithoutBarrier(scope, i, jsUndefined());
}
} else {
ObjectInitializationScope scope(vm);
array = tryCreateUninitializedRegExpMatchesArray(scope, &deferralContext, globalObject->regExpMatchesArrayStructure(), regExp->numSubpatterns() + 1);
RELEASE_ASSERT(array);
array->initializeIndexWithoutBarrier(scope, 0, jsEmptyString(&vm), ArrayWithContiguous);
if (unsigned numSubpatterns = regExp->numSubpatterns()) {
for (unsigned i = 1; i <= numSubpatterns; ++i)
array->initializeIndexWithoutBarrier(scope, i, jsUndefined(), ArrayWithContiguous);
}
}
array->putDirectWithoutBarrier(RegExpMatchesArrayIndexPropertyOffset, jsNumber(-1));
array->putDirectWithoutBarrier(RegExpMatchesArrayInputPropertyOffset, input);
return array;
}
enum class ShouldCreateGroups { No, Yes };
static Structure* createStructureImpl(VM& vm, JSGlobalObject* globalObject, IndexingType indexingType, ShouldCreateGroups shouldCreateGroups = ShouldCreateGroups::No)
{
Structure* structure = globalObject->arrayStructureForIndexingTypeDuringAllocation(indexingType);
PropertyOffset offset;
structure = Structure::addPropertyTransition(vm, structure, vm.propertyNames->index, 0, offset);
ASSERT(offset == RegExpMatchesArrayIndexPropertyOffset);
structure = Structure::addPropertyTransition(vm, structure, vm.propertyNames->input, 0, offset);
ASSERT(offset == RegExpMatchesArrayInputPropertyOffset);
switch (shouldCreateGroups) {
case ShouldCreateGroups::Yes:
structure = Structure::addPropertyTransition(vm, structure, vm.propertyNames->groups, 0, offset);
ASSERT(offset == RegExpMatchesArrayGroupsPropertyOffset);
break;
case ShouldCreateGroups::No:
break;
}
return structure;
}
Structure* createRegExpMatchesArrayStructure(VM& vm, JSGlobalObject* globalObject)
{
return createStructureImpl(vm, globalObject, ArrayWithContiguous);
}
Structure* createRegExpMatchesArraySlowPutStructure(VM& vm, JSGlobalObject* globalObject)
{
return createStructureImpl(vm, globalObject, ArrayWithSlowPutArrayStorage);
}
Structure* createRegExpMatchesArrayWithGroupsStructure(VM& vm, JSGlobalObject* globalObject)
{
return createStructureImpl(vm, globalObject, ArrayWithContiguous, ShouldCreateGroups::Yes);
}
Structure* createRegExpMatchesArrayWithGroupsSlowPutStructure(VM& vm, JSGlobalObject* globalObject)
{
return createStructureImpl(vm, globalObject, ArrayWithSlowPutArrayStorage, ShouldCreateGroups::Yes);
}
} // namespace JSC