mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-23 04:09:40 +00:00
100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
/*
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* Copyright (C) 2013, 2016 Apple Inc. All rights reserved.
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* Copyright (C) 2018 Igalia S.L.
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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 "JSWeakValue.h"
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#include "JSCInlines.h"
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namespace JSC {
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JSWeakValue::~JSWeakValue()
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{
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clear();
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}
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void JSWeakValue::clear()
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{
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switch (m_tag) {
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case WeakTypeTag::NotSet:
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return;
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case WeakTypeTag::Primitive:
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m_value.primitive = JSValue();
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return;
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case WeakTypeTag::Object:
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m_value.object.clear();
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return;
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case WeakTypeTag::String:
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m_value.string.clear();
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return;
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}
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RELEASE_ASSERT_NOT_REACHED();
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}
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bool JSWeakValue::isClear() const
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{
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switch (m_tag) {
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case WeakTypeTag::NotSet:
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return true;
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case WeakTypeTag::Primitive:
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return !m_value.primitive;
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case WeakTypeTag::Object:
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return !m_value.object;
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case WeakTypeTag::String:
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return !m_value.string;
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}
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RELEASE_ASSERT_NOT_REACHED();
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}
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void JSWeakValue::setPrimitive(JSValue primitive)
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{
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ASSERT(!isSet());
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ASSERT(!m_value.primitive);
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ASSERT(primitive.isPrimitive());
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m_tag = WeakTypeTag::Primitive;
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m_value.primitive = primitive;
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}
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void JSWeakValue::setObject(JSObject* object, WeakHandleOwner& owner, void* context)
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{
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ASSERT(!isSet());
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ASSERT(!m_value.object);
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m_tag = WeakTypeTag::Object;
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Weak<JSObject> weak(object, &owner, context);
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m_value.object.swap(weak);
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}
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void JSWeakValue::setString(JSString* string, WeakHandleOwner& owner, void* context)
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{
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ASSERT(!isSet());
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ASSERT(!m_value.string);
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m_tag = WeakTypeTag::String;
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Weak<JSString> weak(string, &owner, context);
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m_value.string.swap(weak);
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}
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} // namespace JSC
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