JavaScriptCore/runtime/Error.cpp

/*
 *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
 *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
 *  Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
 *  Copyright (C) 2007 Eric Seidel (eric@webkit.org)
 *
 *  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 "JSFunction.h"
#include "JSGlobalObject.h"
#include "JSObject.h"
#include "JSString.h"
#include "NativeErrorConstructor.h"
#include "SourceCode.h"

namespace JSC {

static const char* linePropertyName = "line";
static const char* sourceIdPropertyName = "sourceId";
static const char* sourceURLPropertyName = "sourceURL";
static const char* expressionBeginOffsetPropertyName = "expressionBeginOffset";
static const char* expressionCaretOffsetPropertyName = "expressionCaretOffset";
static const char* expressionEndOffsetPropertyName = "expressionEndOffset";

JSObject* createError(JSGlobalObject* globalObject, const UString& message)
{
    ASSERT(!message.isEmpty());
    return ErrorInstance::create(globalObject->globalData(), globalObject->errorStructure(), message);
}

JSObject* createEvalError(JSGlobalObject* globalObject, const UString& message)
{
    ASSERT(!message.isEmpty());
    return ErrorInstance::create(globalObject->globalData(), globalObject->evalErrorConstructor()->errorStructure(), message);
}

JSObject* createRangeError(JSGlobalObject* globalObject, const UString& message)
{
    ASSERT(!message.isEmpty());
    return ErrorInstance::create(globalObject->globalData(), globalObject->rangeErrorConstructor()->errorStructure(), message);
}

JSObject* createReferenceError(JSGlobalObject* globalObject, const UString& message)
{
    ASSERT(!message.isEmpty());
    return ErrorInstance::create(globalObject->globalData(), globalObject->referenceErrorConstructor()->errorStructure(), message);
}

JSObject* createSyntaxError(JSGlobalObject* globalObject, const UString& message)
{
    ASSERT(!message.isEmpty());
    return ErrorInstance::create(globalObject->globalData(), globalObject->syntaxErrorConstructor()->errorStructure(), message);
}

JSObject* createTypeError(JSGlobalObject* globalObject, const UString& message)
{
    ASSERT(!message.isEmpty());
    return ErrorInstance::create(globalObject->globalData(), globalObject->typeErrorConstructor()->errorStructure(), message);
}

JSObject* createURIError(JSGlobalObject* globalObject, const UString& message)
{
    ASSERT(!message.isEmpty());
    return ErrorInstance::create(globalObject->globalData(), globalObject->URIErrorConstructor()->errorStructure(), message);
}

JSObject* createError(ExecState* exec, const UString& message)
{
    return createError(exec->lexicalGlobalObject(), message);
}

JSObject* createEvalError(ExecState* exec, const UString& message)
{
    return createEvalError(exec->lexicalGlobalObject(), message);
}

JSObject* createRangeError(ExecState* exec, const UString& message)
{
    return createRangeError(exec->lexicalGlobalObject(), message);
}

JSObject* createReferenceError(ExecState* exec, const UString& message)
{
    return createReferenceError(exec->lexicalGlobalObject(), message);
}

JSObject* createSyntaxError(ExecState* exec, const UString& message)
{
    return createSyntaxError(exec->lexicalGlobalObject(), message);
}

JSObject* createTypeError(ExecState* exec, const UString& message)
{
    return createTypeError(exec->lexicalGlobalObject(), message);
}

JSObject* createURIError(ExecState* exec, const UString& message)
{
    return createURIError(exec->lexicalGlobalObject(), message);
}

static void addErrorSourceInfo(JSGlobalData* globalData, JSObject* error, int line, const SourceCode& source)
{
    intptr_t sourceID = source.provider()->asID();
    const UString& sourceURL = source.provider()->url();

    if (line != -1)
        error->putWithAttributes(globalData, Identifier(globalData, linePropertyName), jsNumber(globalData, line), ReadOnly | DontDelete);
    if (sourceID != -1)
        error->putWithAttributes(globalData, Identifier(globalData, sourceIdPropertyName), jsNumber(globalData, (double)sourceID), ReadOnly | DontDelete);
    if (!sourceURL.isNull())
        error->putWithAttributes(globalData, Identifier(globalData, sourceURLPropertyName), jsString(globalData, sourceURL), ReadOnly | DontDelete);
}

static void addErrorDivotInfo(JSGlobalData* globalData, JSObject* error, int divotPoint, int startOffset, int endOffset, bool withCaret)
{
    error->putWithAttributes(globalData, Identifier(globalData, expressionBeginOffsetPropertyName), jsNumber(globalData, divotPoint - startOffset), ReadOnly | DontDelete);
    error->putWithAttributes(globalData, Identifier(globalData, expressionEndOffsetPropertyName), jsNumber(globalData, divotPoint + endOffset), ReadOnly | DontDelete);
    if (withCaret)
        error->putWithAttributes(globalData, Identifier(globalData, expressionCaretOffsetPropertyName), jsNumber(globalData, divotPoint), ReadOnly | DontDelete);
}

JSObject* addErrorInfo(JSGlobalData* globalData, JSObject* error, int line, const SourceCode& source)
{
    addErrorSourceInfo(globalData, error, line, source);
    return error;
}

JSObject* addErrorInfo(JSGlobalData* globalData, JSObject* error, int line, const SourceCode& source, int divotPoint, int startOffset, int endOffset, bool withCaret)
{
    addErrorSourceInfo(globalData, error, line, source);
    addErrorDivotInfo(globalData, error, divotPoint, startOffset, endOffset, withCaret);
    return error;
}

JSObject* addErrorInfo(ExecState* exec, JSObject* error, int line, const SourceCode& source)
{
    return addErrorInfo(&exec->globalData(), error, line, source);
}

JSObject* addErrorInfo(ExecState* exec, JSObject* error, int line, const SourceCode& source, int divotPoint, int startOffset, int endOffset, bool withCaret)
{
    return addErrorInfo(&exec->globalData(), error, line, source, divotPoint, startOffset, endOffset, withCaret);
}

bool hasErrorInfo(ExecState* exec, JSObject* error)
{
    return error->hasProperty(exec, Identifier(exec, linePropertyName))
        || error->hasProperty(exec, Identifier(exec, sourceIdPropertyName))
        || error->hasProperty(exec, Identifier(exec, sourceURLPropertyName))
        || error->hasProperty(exec, Identifier(exec, expressionBeginOffsetPropertyName))
        || error->hasProperty(exec, Identifier(exec, expressionCaretOffsetPropertyName))
        || error->hasProperty(exec, Identifier(exec, expressionEndOffsetPropertyName));
}

JSValue throwError(ExecState* exec, JSValue error)
{
    exec->globalData().exception = error;
    return error;
}

JSObject* throwError(ExecState* exec, JSObject* error)
{
    exec->globalData().exception = error;
    return error;
}

JSObject* throwTypeError(ExecState* exec)
{
    return throwError(exec, createTypeError(exec, "Type error"));
}

JSObject* throwSyntaxError(ExecState* exec)
{
    return throwError(exec, createSyntaxError(exec, "Syntax error"));
}

} // namespace JSC