mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2025-04-09 10:20:59 +00:00
124 lines
4.4 KiB
C++
124 lines
4.4 KiB
C++
/*
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* Copyright (C) 2012, 2016 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 "RegExpCachedResult.h"
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#include "RegExpCache.h"
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#include "RegExpMatchesArray.h"
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namespace JSC {
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void RegExpCachedResult::visitAggregate(SlotVisitor& visitor)
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{
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visitor.append(m_lastInput);
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visitor.append(m_lastRegExp);
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if (m_reified) {
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visitor.append(m_reifiedInput);
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visitor.append(m_reifiedResult);
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visitor.append(m_reifiedLeftContext);
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visitor.append(m_reifiedRightContext);
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}
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}
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JSArray* RegExpCachedResult::lastResult(JSGlobalObject* globalObject, JSObject* owner)
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{
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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if (!m_reified) {
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m_reifiedInput.set(vm, owner, m_lastInput.get());
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if (!m_lastRegExp)
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m_lastRegExp.set(vm, owner, vm.regExpCache()->ensureEmptyRegExp(vm));
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JSArray* result = nullptr;
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if (m_result)
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result = createRegExpMatchesArray(globalObject, m_lastInput.get(), m_lastRegExp.get(), m_result.start);
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else
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result = createEmptyRegExpMatchesArray(globalObject, m_lastInput.get(), m_lastRegExp.get());
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RETURN_IF_EXCEPTION(scope, nullptr);
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m_reifiedResult.setWithoutWriteBarrier(result);
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m_reifiedLeftContext.clear();
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m_reifiedRightContext.clear();
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m_reified = true;
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vm.heap.writeBarrier(owner);
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}
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return m_reifiedResult.get();
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}
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JSString* RegExpCachedResult::leftContext(JSGlobalObject* globalObject, JSObject* owner)
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{
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// Make sure we're reified.
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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lastResult(globalObject, owner);
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RETURN_IF_EXCEPTION(scope, nullptr);
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if (!m_reifiedLeftContext) {
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JSString* leftContext = jsSubstring(globalObject, m_reifiedInput.get(), 0, m_result.start);
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RETURN_IF_EXCEPTION(scope, nullptr);
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m_reifiedLeftContext.set(vm, owner, leftContext);
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}
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return m_reifiedLeftContext.get();
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}
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JSString* RegExpCachedResult::rightContext(JSGlobalObject* globalObject, JSObject* owner)
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{
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// Make sure we're reified.
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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lastResult(globalObject, owner);
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RETURN_IF_EXCEPTION(scope, nullptr);
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if (!m_reifiedRightContext) {
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unsigned length = m_reifiedInput->length();
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JSString* rightContext = jsSubstring(globalObject, m_reifiedInput.get(), m_result.end, length - m_result.end);
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RETURN_IF_EXCEPTION(scope, nullptr);
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m_reifiedRightContext.set(vm, owner, rightContext);
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}
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return m_reifiedRightContext.get();
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}
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void RegExpCachedResult::setInput(JSGlobalObject* globalObject, JSObject* owner, JSString* input)
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{
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// Make sure we're reified, otherwise m_reifiedInput will be ignored.
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VM& vm = globalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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lastResult(globalObject, owner);
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RETURN_IF_EXCEPTION(scope, void());
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leftContext(globalObject, owner);
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RETURN_IF_EXCEPTION(scope, void());
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rightContext(globalObject, owner);
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RETURN_IF_EXCEPTION(scope, void());
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ASSERT(m_reified);
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m_reifiedInput.set(vm, owner, input);
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}
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} // namespace JSC
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