error.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 *  Copyright (C) 1999-2001 Harri Porten ([e-mail])
 *  Copyright (C) 2001 Peter Kelly ([e-mail])
 *  Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
 *  Copyright (C) 2007 Eric Seidel ([e-mail])
 *
 *  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.
 *
 */

#include "config.h"
#include "Error.h"

#include "ConstructData.h"
#include "ErrorConstructor.h"
#include "JSGlobalObject.h"
#include "JSObject.h"
#include "JSString.h"
#include "NativeErrorConstructor.h"

namespace JSC {

const char* expressionBeginOffsetPropertyName = "expressionBeginOffset";
const char* expressionCaretOffsetPropertyName = "expressionCaretOffset";
const char* expressionEndOffsetPropertyName = "expressionEndOffset";

JSObject* Error::create(ExecState* exec, ErrorType type, const UString& message, int lineNumber, intptr_t sourceID, const UString& sourceURL)
{
    JSObject* constructor;
    const char* name;
    switch (type) {
        case EvalError:
            constructor = exec->lexicalGlobalObject()->evalErrorConstructor();
            name = "Evaluation error";
            break;
        case RangeError:
            constructor = exec->lexicalGlobalObject()->rangeErrorConstructor();
            name = "Range error";
            break;
        case ReferenceError:
            constructor = exec->lexicalGlobalObject()->referenceErrorConstructor();
            name = "Reference error";
            break;
        case SyntaxError:
            constructor = exec->lexicalGlobalObject()->syntaxErrorConstructor();
            name = "Syntax error";
            break;
        case TypeError:
            constructor = exec->lexicalGlobalObject()->typeErrorConstructor();
            name = "Type error";
            break;
        case URIError:
            constructor = exec->lexicalGlobalObject()->URIErrorConstructor();
            name = "URI error";
            break;
        default:
            constructor = exec->lexicalGlobalObject()->errorConstructor();
            name = "Error";
            break;
    }

    ArgList args;
    if (message.isEmpty())
        args.append(jsString(exec, name));
    else
        args.append(jsString(exec, message));
    ConstructData constructData;
    ConstructType constructType = constructor->getConstructData(constructData);
    JSObject* error = construct(exec, constructor, constructType, constructData, args);

    if (lineNumber != -1)
        error->putWithAttributes(exec, Identifier(exec, "line"), jsNumber(exec, lineNumber), ReadOnly | DontDelete);
    if (sourceID != -1)
        error->putWithAttributes(exec, Identifier(exec, "sourceId"), jsNumber(exec, sourceID), ReadOnly | DontDelete);
    if (!sourceURL.isNull())
        error->putWithAttributes(exec, Identifier(exec, "sourceURL"), jsString(exec, sourceURL), ReadOnly | DontDelete);

    return error;
}

JSObject* Error::create(ExecState* exec, ErrorType type, const char* message)
{
    return create(exec, type, message, -1, -1, NULL);
}

JSObject* throwError(ExecState* exec, ErrorType type)
{
    JSObject* error = Error::create(exec, type, UString(), -1, -1, NULL);
    exec->setException(error);
    return error;
}

JSObject* throwError(ExecState* exec, ErrorType type, const UString& message)
{
    JSObject* error = Error::create(exec, type, message, -1, -1, NULL);
    exec->setException(error);
    return error;
}

JSObject* throwError(ExecState* exec, ErrorType type, const char* message)
{
    JSObject* error = Error::create(exec, type, message, -1, -1, NULL);
    exec->setException(error);
    return error;
}

JSObject* throwError(ExecState* exec, ErrorType type, const UString& message, int line, intptr_t sourceID, const UString& sourceURL)
{
    JSObject* error = Error::create(exec, type, message, line, sourceID, sourceURL);
    exec->setException(error);
    return error;
}

} // namespace JSC