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/*
* Copyright (C) 2015-2022 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.
*/
#pragma once
#include "JSDestructibleObject.h"
#include "StackFrame.h"
#include <wtf/Vector.h>
namespace JSC {
class Exception final : public JSCell {
public:
using Base = JSCell;
static constexpr unsigned StructureFlags = Base::StructureFlags | StructureIsImmortal;
static constexpr DestructionMode needsDestruction = NeedsDestruction;
template<typename CellType, SubspaceAccess mode>
static GCClient::IsoSubspace* subspaceFor(VM& vm)
{
return &vm.exceptionSpace();
}
enum StackCaptureAction {
CaptureStack,
DoNotCaptureStack
};
JS_EXPORT_PRIVATE static Exception* create(VM&, JSValue thrownValue, StackCaptureAction = CaptureStack);
static Structure* createStructure(VM&, JSGlobalObject*, JSValue prototype);
DECLARE_VISIT_CHILDREN;
DECLARE_EXPORT_INFO;
static constexpr ptrdiff_t valueOffset()
{
return OBJECT_OFFSETOF(Exception, m_value);
}
JSValue value() const { return m_value.get(); }
const Vector<StackFrame>& stack() const { return m_stack; }
bool didNotifyInspectorOfThrow() const { return m_didNotifyInspectorOfThrow; }
void setDidNotifyInspectorOfThrow() { m_didNotifyInspectorOfThrow = true; }
#if ENABLE(WEBASSEMBLY)
void wrapValueForJSTag(JSGlobalObject*);
#endif
~Exception();
private:
Exception(VM&, JSValue thrownValue);
void finishCreation(VM&, StackCaptureAction);
static void destroy(JSCell*);
WriteBarrier<Unknown> m_value;
Vector<StackFrame> m_stack;
bool m_didNotifyInspectorOfThrow { false };
friend class LLIntOffsetsExtractor;
};
} // namespace JSC
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