mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2025-04-09 02:10:43 +00:00
98 lines
4.5 KiB
C++
98 lines
4.5 KiB
C++
/*
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* Copyright (C) 2012-2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "RegExpMatchesArray.h"
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namespace JSC {
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JSArray* createEmptyRegExpMatchesArray(JSGlobalObject* globalObject, JSString* input, RegExp* regExp)
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{
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VM& vm = globalObject->vm();
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JSArray* array;
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// FIXME: This should handle array allocation errors gracefully.
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// https://bugs.webkit.org/show_bug.cgi?id=155144
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GCDeferralContext deferralContext(vm.heap);
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ObjectInitializationScope scope(vm);
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if (UNLIKELY(globalObject->isHavingABadTime())) {
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array = JSArray::tryCreateUninitializedRestricted(scope, &deferralContext, globalObject->regExpMatchesArrayStructure(), regExp->numSubpatterns() + 1);
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// FIXME: we should probably throw an out of memory error here, but
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// when making this change we should check that all clients of this
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// function will correctly handle an exception being thrown from here.
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// https://bugs.webkit.org/show_bug.cgi?id=169786
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RELEASE_ASSERT(array);
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array->initializeIndexWithoutBarrier(scope, 0, jsEmptyString(vm));
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if (unsigned numSubpatterns = regExp->numSubpatterns()) {
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for (unsigned i = 1; i <= numSubpatterns; ++i)
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array->initializeIndexWithoutBarrier(scope, i, jsUndefined());
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}
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} else {
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array = tryCreateUninitializedRegExpMatchesArray(scope, &deferralContext, globalObject->regExpMatchesArrayStructure(), regExp->numSubpatterns() + 1);
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RELEASE_ASSERT(array);
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array->initializeIndexWithoutBarrier(scope, 0, jsEmptyString(vm), ArrayWithContiguous);
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if (unsigned numSubpatterns = regExp->numSubpatterns()) {
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for (unsigned i = 1; i <= numSubpatterns; ++i)
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array->initializeIndexWithoutBarrier(scope, i, jsUndefined(), ArrayWithContiguous);
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}
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}
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array->putDirectWithoutBarrier(RegExpMatchesArrayIndexPropertyOffset, jsNumber(-1));
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array->putDirectWithoutBarrier(RegExpMatchesArrayInputPropertyOffset, input);
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array->putDirectWithoutBarrier(RegExpMatchesArrayGroupsPropertyOffset, jsUndefined());
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return array;
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}
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static Structure* createStructureImpl(VM& vm, JSGlobalObject* globalObject, IndexingType indexingType)
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{
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Structure* structure = globalObject->arrayStructureForIndexingTypeDuringAllocation(indexingType);
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PropertyOffset offset;
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structure = Structure::addPropertyTransition(vm, structure, vm.propertyNames->index, 0, offset);
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ASSERT(offset == RegExpMatchesArrayIndexPropertyOffset);
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structure = Structure::addPropertyTransition(vm, structure, vm.propertyNames->input, 0, offset);
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ASSERT(offset == RegExpMatchesArrayInputPropertyOffset);
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structure = Structure::addPropertyTransition(vm, structure, vm.propertyNames->groups, 0, offset);
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ASSERT(offset == RegExpMatchesArrayGroupsPropertyOffset);
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return structure;
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}
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Structure* createRegExpMatchesArrayStructure(VM& vm, JSGlobalObject* globalObject)
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{
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return createStructureImpl(vm, globalObject, ArrayWithContiguous);
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}
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Structure* createRegExpMatchesArraySlowPutStructure(VM& vm, JSGlobalObject* globalObject)
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{
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return createStructureImpl(vm, globalObject, ArrayWithSlowPutArrayStorage);
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}
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} // namespace JSC
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