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/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2008-2020 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#pragma once
#include "ErrorType.h"
#include "JSObject.h"
#include "RuntimeType.h"
#include "StackFrame.h"
namespace JSC {
class ErrorInstance : public JSNonFinalObject {
public:
using Base = JSNonFinalObject;
static constexpr unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | OverridesGetOwnSpecialPropertyNames | OverridesPut;
static constexpr bool needsDestruction = true;
static void destroy(JSCell* cell)
{
static_cast<ErrorInstance*>(cell)->ErrorInstance::~ErrorInstance();
}
template<typename CellType, SubspaceAccess mode>
static IsoSubspace* subspaceFor(VM& vm)
{
return vm.errorInstanceSpace<mode>();
}
enum SourceTextWhereErrorOccurred { FoundExactSource, FoundApproximateSource };
typedef String (*SourceAppender) (const String& originalMessage, const String& sourceText, RuntimeType, SourceTextWhereErrorOccurred);
DECLARE_EXPORT_INFO;
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(ErrorInstanceType, StructureFlags), info());
}
static ErrorInstance* create(JSGlobalObject* globalObject, VM& vm, Structure* structure, const String& message, JSValue cause, SourceAppender appender = nullptr, RuntimeType type = TypeNothing, ErrorType errorType = ErrorType::Error, bool useCurrentFrame = true)
{
ErrorInstance* instance = new (NotNull, allocateCell<ErrorInstance>(vm.heap)) ErrorInstance(vm, structure, errorType);
instance->finishCreation(vm, globalObject, message, cause, appender, type, useCurrentFrame);
return instance;
}
static ErrorInstance* create(JSGlobalObject*, Structure*, JSValue message, JSValue options, SourceAppender = nullptr, RuntimeType = TypeNothing, ErrorType = ErrorType::Error, bool useCurrentFrame = true);
bool hasSourceAppender() const { return !!m_sourceAppender; }
SourceAppender sourceAppender() const { return m_sourceAppender; }
void setSourceAppender(SourceAppender appender) { m_sourceAppender = appender; }
void clearSourceAppender() { m_sourceAppender = nullptr; }
void setRuntimeTypeForCause(RuntimeType type) { m_runtimeTypeForCause = type; }
RuntimeType runtimeTypeForCause() const { return m_runtimeTypeForCause; }
void clearRuntimeTypeForCause() { m_runtimeTypeForCause = TypeNothing; }
ErrorType errorType() const { return m_errorType; }
void setStackOverflowError() { m_stackOverflowError = true; }
bool isStackOverflowError() const { return m_stackOverflowError; }
void setOutOfMemoryError() { m_outOfMemoryError = true; }
bool isOutOfMemoryError() const { return m_outOfMemoryError; }
void setNativeGetterTypeError() { m_nativeGetterTypeError = true; }
bool isNativeGetterTypeError() const { return m_nativeGetterTypeError; }
JS_EXPORT_PRIVATE String sanitizedToString(JSGlobalObject*);
JS_EXPORT_PRIVATE String sanitizedMessageString(JSGlobalObject*);
JS_EXPORT_PRIVATE String sanitizedNameString(JSGlobalObject*);
Vector<StackFrame>* stackTrace() { return m_stackTrace.get(); }
bool materializeErrorInfoIfNeeded(VM&);
bool materializeErrorInfoIfNeeded(VM&, PropertyName);
void finalizeUnconditionally(VM&);
protected:
explicit ErrorInstance(VM&, Structure*, ErrorType);
void finishCreation(VM&, JSGlobalObject*, const String& message, JSValue cause, SourceAppender = nullptr, RuntimeType = TypeNothing, bool useCurrentFrame = true);
static bool getOwnPropertySlot(JSObject*, JSGlobalObject*, PropertyName, PropertySlot&);
static void getOwnSpecialPropertyNames(JSObject*, JSGlobalObject*, PropertyNameArray&, DontEnumPropertiesMode);
static bool defineOwnProperty(JSObject*, JSGlobalObject*, PropertyName, const PropertyDescriptor&, bool shouldThrow);
static bool put(JSCell*, JSGlobalObject*, PropertyName, JSValue, PutPropertySlot&);
static bool deleteProperty(JSCell*, JSGlobalObject*, PropertyName, DeletePropertySlot&);
void computeErrorInfo(VM&);
SourceAppender m_sourceAppender { nullptr };
std::unique_ptr<Vector<StackFrame>> m_stackTrace;
unsigned m_line;
unsigned m_column;
String m_sourceURL;
String m_stackString;
RuntimeType m_runtimeTypeForCause { TypeNothing };
ErrorType m_errorType { ErrorType::Error };
bool m_stackOverflowError : 1;
bool m_outOfMemoryError : 1;
bool m_errorInfoMaterialized : 1;
bool m_nativeGetterTypeError : 1;
};
} // namespace JSC
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