Error.h   [plain text]

/*
 *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
 *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
 *  Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this library; see the file COPYING.LIB.  If not, write to
 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301, USA.
 *
 */

#ifndef Error_h
#define Error_h

#include "ErrorInstance.h"
#include "InternalFunction.h"
#include "Interpreter.h"
#include "JSObject.h"
#include <stdint.h>


namespace JSC {

class ExecState;
class VM;
class JSGlobalObject;
class JSObject;
class SourceCode;
class Structure;

// ExecState wrappers.
JSObject* createError(ExecState*, const String&, ErrorInstance::SourceAppender);
JSObject* createEvalError(ExecState*, const String&, ErrorInstance::SourceAppender);
JSObject* createRangeError(ExecState*, const String&, ErrorInstance::SourceAppender);
JSObject* createReferenceError(ExecState*, const String&, ErrorInstance::SourceAppender);
JSObject* createSyntaxError(ExecState*, const String&, ErrorInstance::SourceAppender);
JSObject* createTypeError(ExecState*, const String&, ErrorInstance::SourceAppender, RuntimeType);
JSObject* createNotEnoughArgumentsError(ExecState*, ErrorInstance::SourceAppender);
JSObject* createURIError(ExecState*, const String&, ErrorInstance::SourceAppender);


JS_EXPORT_PRIVATE JSObject* createError(ExecState*, const String&);
JS_EXPORT_PRIVATE JSObject* createEvalError(ExecState*, const String&);
JS_EXPORT_PRIVATE JSObject* createRangeError(ExecState*, const String&);
JS_EXPORT_PRIVATE JSObject* createReferenceError(ExecState*, const String&);
JS_EXPORT_PRIVATE JSObject* createSyntaxError(ExecState*, const String&);
JS_EXPORT_PRIVATE JSObject* createTypeError(ExecState*);
JS_EXPORT_PRIVATE JSObject* createTypeError(ExecState*, const String&);
JS_EXPORT_PRIVATE JSObject* createNotEnoughArgumentsError(ExecState*);
JS_EXPORT_PRIVATE JSObject* createURIError(ExecState*, const String&);
JS_EXPORT_PRIVATE JSObject* createOutOfMemoryError(ExecState*);


bool addErrorInfoAndGetBytecodeOffset(ExecState*, VM&, JSObject*, bool, CallFrame*&, unsigned* = nullptr);

bool hasErrorInfo(ExecState*, JSObject* error);
JS_EXPORT_PRIVATE void addErrorInfo(ExecState*, JSObject*, bool); 
JSObject* addErrorInfo(ExecState*, JSObject* error, int line, const SourceCode&);

// Methods to throw Errors.

// Convenience wrappers, create an throw an exception with a default message.
JS_EXPORT_PRIVATE JSObject* throwConstructorCannotBeCalledAsFunctionTypeError(ExecState*, const char* constructorName);
JS_EXPORT_PRIVATE JSObject* throwTypeError(ExecState*);
JS_EXPORT_PRIVATE JSObject* throwTypeError(ExecState*, ASCIILiteral errorMessage);
JS_EXPORT_PRIVATE JSObject* throwTypeError(ExecState*, const String& errorMessage);
JS_EXPORT_PRIVATE JSObject* throwSyntaxError(ExecState*);
JS_EXPORT_PRIVATE JSObject* throwSyntaxError(ExecState*, const String& errorMessage);
inline JSObject* throwRangeError(ExecState* state, const String& errorMessage) { return state->vm().throwException(state, createRangeError(state, errorMessage)); }

// Convenience wrappers, wrap result as an EncodedJSValue.
inline void throwVMError(ExecState* exec, Exception* exception) { exec->vm().throwException(exec, exception); }
inline EncodedJSValue throwVMError(ExecState* exec, JSValue error) { return JSValue::encode(exec->vm().throwException(exec, error)); }
inline EncodedJSValue throwVMTypeError(ExecState* exec) { return JSValue::encode(throwTypeError(exec)); }
inline EncodedJSValue throwVMTypeError(ExecState* exec, ASCIILiteral errorMessage) { return JSValue::encode(throwTypeError(exec, errorMessage)); }
inline EncodedJSValue throwVMTypeError(ExecState* exec, const String& errorMessage) { return JSValue::encode(throwTypeError(exec, errorMessage)); }
inline EncodedJSValue throwVMRangeError(ExecState* state, const String& errorMessage) { return JSValue::encode(throwRangeError(state, errorMessage)); }

class StrictModeTypeErrorFunction : public InternalFunction {
private:
    StrictModeTypeErrorFunction(VM& vm, Structure* structure, const String& message)
        : InternalFunction(vm, structure)
        , m_message(message)
    {
    }

    static void destroy(JSCell*);

public:
    typedef InternalFunction Base;

    static StrictModeTypeErrorFunction* create(VM& vm, Structure* structure, const String& message)
    {
        StrictModeTypeErrorFunction* function = new (NotNull, allocateCell<StrictModeTypeErrorFunction>(vm.heap)) StrictModeTypeErrorFunction(vm, structure, message);
        function->finishCreation(vm, String());
        return function;
    }

    static EncodedJSValue JSC_HOST_CALL constructThrowTypeError(ExecState* exec)
    {
        throwTypeError(exec, static_cast<StrictModeTypeErrorFunction*>(exec->callee())->m_message);
        return JSValue::encode(jsNull());
    }

    static ConstructType getConstructData(JSCell*, ConstructData& constructData)
    {
        constructData.native.function = constructThrowTypeError;
        return ConstructType::Host;
    }

    static EncodedJSValue JSC_HOST_CALL callThrowTypeError(ExecState* exec)
    {
        throwTypeError(exec, static_cast<StrictModeTypeErrorFunction*>(exec->callee())->m_message);
        return JSValue::encode(jsNull());
    }

    static CallType getCallData(JSCell*, CallData& callData)
    {
        callData.native.function = callThrowTypeError;
        return CallType::Host;
    }

    DECLARE_INFO;

    static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype) 
    { 
        return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info()); 
    }

private:
    String m_message;
};

} // namespace JSC

#endif // Error_h