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Diffstat (limited to 'src/script/qscriptecmaerror.cpp')
| -rw-r--r-- | src/script/qscriptecmaerror.cpp | 368 |
1 files changed, 368 insertions, 0 deletions
diff --git a/src/script/qscriptecmaerror.cpp b/src/script/qscriptecmaerror.cpp new file mode 100644 index 0000000000..fc39bf90a6 --- /dev/null +++ b/src/script/qscriptecmaerror.cpp @@ -0,0 +1,368 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtScript module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qscriptecmaerror_p.h" + +#ifndef QT_NO_SCRIPT + +#include "qscriptengine_p.h" +#include "qscriptvalueimpl_p.h" +#include "qscriptcontext_p.h" +#include "qscriptmember_p.h" +#include "qscriptobject_p.h" + +#include <QtCore/QtDebug> + +QT_BEGIN_NAMESPACE + +namespace QScript { namespace Ecma { + +static QString getMessage(QScriptContextPrivate *context) +{ + if (context->argumentCount() > 0) + return context->argument(0).toString(); + return QString(); +} + +static void setDebugInformation(QScriptValueImpl *error, QScriptContextPrivate *context) +{ + Q_ASSERT(context->previous); + context->previous->setDebugInformation(error); +} + +static QScriptValueImpl method_EvalError(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *) +{ + QScriptValueImpl result; + if (context->isCalledAsConstructor()) + result = context->thisObject(); + eng->errorConstructor->newEvalError(&result, getMessage(context)); + setDebugInformation(&result, context); + return result; +} + +static QScriptValueImpl method_RangeError(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *) +{ + QScriptValueImpl result; + if (context->isCalledAsConstructor()) + result = context->thisObject(); + eng->errorConstructor->newRangeError(&result, getMessage(context)); + setDebugInformation(&result, context); + return result; +} + +static QScriptValueImpl method_ReferenceError(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *) +{ + QScriptValueImpl result; + if (context->isCalledAsConstructor()) + result = context->thisObject(); + eng->errorConstructor->newReferenceError(&result, getMessage(context)); + setDebugInformation(&result, context); + return result; +} + +static QScriptValueImpl method_SyntaxError(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *) +{ + QScriptValueImpl result; + if (context->isCalledAsConstructor()) + result = context->thisObject(); + eng->errorConstructor->newSyntaxError(&result, getMessage(context)); + setDebugInformation(&result, context); + return result; +} + +static QScriptValueImpl method_TypeError(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *) +{ + QScriptValueImpl result; + if (context->isCalledAsConstructor()) + result = context->thisObject(); + eng->errorConstructor->newTypeError(&result, getMessage(context)); + setDebugInformation(&result, context); + return result; +} + +static QScriptValueImpl method_UriError(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *) +{ + QScriptValueImpl result; + if (context->isCalledAsConstructor()) + result = context->thisObject(); + eng->errorConstructor->newURIError(&result, getMessage(context)); + setDebugInformation(&result, context); + return result; +} + +Error::Error(QScriptEnginePrivate *eng): + Core(eng, QLatin1String("Error"), QScriptClassInfo::ErrorType) +{ + eng->newFunction(&ctor, this); + newErrorPrototype(&publicPrototype, QScriptValueImpl(), ctor, QLatin1String("Error")); + addPrototypeFunction(QLatin1String("backtrace"), method_backtrace, 0); + addPrototypeFunction(QLatin1String("toString"), method_toString, 0); + + // native errors + + evalErrorCtor = eng->createFunction(method_EvalError, 3, + classInfo(), QLatin1String("EvalError")); + rangeErrorCtor = eng->createFunction(method_RangeError, 3, + classInfo(), QLatin1String("RangeError")); + referenceErrorCtor = eng->createFunction(method_ReferenceError, 3, + classInfo(), QLatin1String("ReferenceError")); + syntaxErrorCtor = eng->createFunction(method_SyntaxError, 3, + classInfo(), QLatin1String("SyntaxError")); + typeErrorCtor = eng->createFunction(method_TypeError, 3, + classInfo(), QLatin1String("TypeError")); + uriErrorCtor = eng->createFunction(method_UriError, 3, + classInfo(), QLatin1String("URIError")); + + newErrorPrototype(&evalErrorPrototype, publicPrototype, + evalErrorCtor, QLatin1String("EvalError")); + newErrorPrototype(&rangeErrorPrototype, publicPrototype, + rangeErrorCtor, QLatin1String("RangeError")); + newErrorPrototype(&referenceErrorPrototype, publicPrototype, + referenceErrorCtor, QLatin1String("ReferenceError")); + newErrorPrototype(&syntaxErrorPrototype, publicPrototype, + syntaxErrorCtor, QLatin1String("SyntaxError")); + newErrorPrototype(&typeErrorPrototype, publicPrototype, + typeErrorCtor, QLatin1String("TypeError")); + newErrorPrototype(&uriErrorPrototype, publicPrototype, + uriErrorCtor, QLatin1String("URIError")); +} + +Error::~Error() +{ +} + +void Error::execute(QScriptContextPrivate *context) +{ +#ifndef Q_SCRIPT_NO_EVENT_NOTIFY + engine()->notifyFunctionEntry(context); +#endif + QString message = QString(); + + if (context->argumentCount() > 0) + message = context->argument(0).toString(); + + QScriptValueImpl result; + newError(&result, publicPrototype, message); + + setDebugInformation(&result, context); + + context->setReturnValue(result); +#ifndef Q_SCRIPT_NO_EVENT_NOTIFY + engine()->notifyFunctionExit(context); +#endif +} + +void Error::mark(QScriptEnginePrivate *eng, int generation) +{ + Core::mark(eng, generation); + + eng->markObject(evalErrorCtor, generation); + eng->markObject(rangeErrorCtor, generation); + eng->markObject(referenceErrorCtor, generation); + eng->markObject(syntaxErrorCtor, generation); + eng->markObject(typeErrorCtor, generation); + eng->markObject(uriErrorCtor, generation); + + eng->markObject(evalErrorPrototype, generation); + eng->markObject(rangeErrorPrototype, generation); + eng->markObject(referenceErrorPrototype, generation); + eng->markObject(syntaxErrorPrototype, generation); + eng->markObject(typeErrorPrototype, generation); + eng->markObject(uriErrorPrototype, generation); +} + +void Error::newError(QScriptValueImpl *result, const QString &message) +{ + newError(result, publicPrototype, message); +} + +void Error::newEvalError(QScriptValueImpl *result, const QString &message) +{ + newError(result, evalErrorPrototype, message); +} + +void Error::newRangeError(QScriptValueImpl *result, const QString &message) +{ + newError(result, rangeErrorPrototype, message); +} + +void Error::newReferenceError(QScriptValueImpl *result, const QString &message) +{ + newError(result, referenceErrorPrototype, message); +} + +void Error::newSyntaxError(QScriptValueImpl *result, const QString &message) +{ + newError(result, syntaxErrorPrototype, message); +} + +void Error::newTypeError(QScriptValueImpl *result, const QString &message) +{ + newError(result, typeErrorPrototype, message); +} + +void Error::newURIError(QScriptValueImpl *result, const QString &message) +{ + newError(result, uriErrorPrototype, message); +} + +void Error::newError(QScriptValueImpl *result, const QScriptValueImpl &proto, + const QString &message) +{ + QScriptEnginePrivate *eng_p = engine(); + + if (!result->isValid()) + eng_p->newObject(result, proto, classInfo()); + else + result->setClassInfo(classInfo()); + result->setProperty(QLatin1String("message"), QScriptValueImpl(eng_p, message)); +} + +void Error::newErrorPrototype(QScriptValueImpl *result, const QScriptValueImpl &proto, + QScriptValueImpl &ztor, const QString &name) +{ + newError(result, proto); + result->setProperty(QLatin1String("name"), QScriptValueImpl(engine(), name)); + result->setProperty(QLatin1String("constructor"), ztor, + QScriptValue::Undeletable + | QScriptValue::SkipInEnumeration); + ztor.setProperty(QLatin1String("prototype"), *result, + QScriptValue::Undeletable + | QScriptValue::ReadOnly + | QScriptValue::SkipInEnumeration); +} + +bool Error::isEvalError(const QScriptValueImpl &value) const +{ + return value.instanceOf(evalErrorPrototype); +} + +bool Error::isRangeError(const QScriptValueImpl &value) const +{ + return value.instanceOf(rangeErrorPrototype); +} + +bool Error::isReferenceError(const QScriptValueImpl &value) const +{ + return value.instanceOf(referenceErrorPrototype); +} + +bool Error::isSyntaxError(const QScriptValueImpl &value) const +{ + return value.instanceOf(syntaxErrorPrototype); +} + +bool Error::isTypeError(const QScriptValueImpl &value) const +{ + return value.instanceOf(typeErrorPrototype); +} + +bool Error::isURIError(const QScriptValueImpl &value) const +{ + return value.instanceOf(uriErrorPrototype); +} + +QStringList Error::backtrace(const QScriptValueImpl &error) +{ + QStringList result; + QScriptValueImpl stack = error.property(QLatin1String("stack")); + int frameCount = stack.property(QLatin1String("length")).toInt32(); + for (int i = 0; i < frameCount; ++i) { + QScriptValueImpl o = stack.property(i); + QScriptValueImpl frame = o.property(QLatin1String("frame")); + QString s; + QString functionName = o.property(QLatin1String("functionName")).toString(); + if (functionName.isEmpty()) { + if (i == frameCount-1) + s += QLatin1String("<global>"); + else + s += QLatin1String("<anonymous>"); + } else { + s += functionName; + } + s += QLatin1String("("); + QScriptValueImpl arguments = frame.property(QLatin1String("arguments")); + if (arguments.isObject()) { + int argCount = arguments.property(QLatin1String("length")).toInt32(); + for (int j = 0; j < argCount; ++j) { + if (j > 0) + s += QLatin1String(","); + s += arguments.property(j).toString(); + } + } + s += QLatin1String(")@") + o.property(QLatin1String("fileName")).toString() + + QLatin1String(":") + o.property(QLatin1String("lineNumber")).toString(); + result.append(s); + } + return result; +} + +QScriptValueImpl Error::method_toString(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *) +{ + QScriptValueImpl name = context->thisObject().property(QLatin1String("name"), + QScriptValue::ResolvePrototype); + QScriptValueImpl message = context->thisObject().property(QLatin1String("message"), + QScriptValue::ResolvePrototype); + QString result = QLatin1String(""); + if (name.isValid()) + result = name.toString(); + if (message.isValid()) { + QString str = message.toString(); + if (!str.isEmpty()) { + if (!result.isEmpty()) + result += QLatin1String(": "); + result += str; + } + } + return (QScriptValueImpl(eng, result)); +} + +QScriptValueImpl Error::method_backtrace(QScriptContextPrivate *context, QScriptEnginePrivate *eng, QScriptClassInfo *) +{ + QScriptValueImpl self = context->thisObject(); + return eng->arrayFromStringList(backtrace(self)); +} + +} } // namespace QSA::Ecma + +QT_END_NAMESPACE + +#endif // QT_NO_SCRIPT |