blob: 97a89daf8c26312747f81168f591633af259a2dd [file] [log] [blame]
/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2008-2017 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 "JSDestructibleObject.h"
#include "RuntimeType.h"
#include "StackFrame.h"
namespace JSC {
class ErrorInstance : public JSDestructibleObject {
public:
typedef JSDestructibleObject Base;
const static unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | OverridesGetPropertyNames;
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(ExecState* exec, VM& vm, Structure* structure, const String& message, SourceAppender appender = nullptr, RuntimeType type = TypeNothing, bool useCurrentFrame = true)
{
ErrorInstance* instance = new (NotNull, allocateCell<ErrorInstance>(vm.heap)) ErrorInstance(vm, structure);
instance->m_sourceAppender = appender;
instance->m_runtimeTypeForCause = type;
instance->finishCreation(exec, vm, message, useCurrentFrame);
return instance;
}
static ErrorInstance* create(ExecState*, Structure*, JSValue message, SourceAppender = nullptr, RuntimeType = TypeNothing, 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; }
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(ExecState*);
Vector<StackFrame>* stackTrace() { return m_stackTrace.get(); }
bool materializeErrorInfoIfNeeded(VM&);
bool materializeErrorInfoIfNeeded(VM&, PropertyName);
template<typename CellType, SubspaceAccess mode>
static IsoSubspace* subspaceFor(VM& vm)
{
return vm.errorInstanceSpace<mode>();
}
void finalizeUnconditionally(VM&);
protected:
explicit ErrorInstance(VM&, Structure*);
void finishCreation(ExecState*, VM&, const String&, bool useCurrentFrame = true);
static void destroy(JSCell*);
static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
static void getOwnNonIndexPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
static void getStructurePropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
static bool defineOwnProperty(JSObject*, ExecState*, PropertyName, const PropertyDescriptor&, bool shouldThrow);
static bool put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
static bool deleteProperty(JSCell*, ExecState*, PropertyName);
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 };
bool m_stackOverflowError { false };
bool m_outOfMemoryError { false };
bool m_errorInfoMaterialized { false };
bool m_nativeGetterTypeError { false };
};
} // namespace JSC