Import JSC-based Qt Script from Kent's tree.

1 files changed, 0 insertions, 553 deletions

diff --git a/src/script/qscriptcontextinfo.cpp b/src/script/qscriptcontextinfo.cpp
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index 260d19f..0000000
--- a/src/script/qscriptcontextinfo.cpp
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-/****************************************************************************
-**
-** 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 "qscriptcontextinfo.h"
-
-#ifndef QT_NO_SCRIPT
-
-#include "qscriptcontextinfo_p.h"
-#include "qscriptengine_p.h"
-#include "qscriptcontext_p.h"
-#include "qscriptvalueimpl_p.h"
-#include "qscriptmember_p.h"
-#include "qscriptobject_p.h"
-#include <QtCore/qdatastream.h>
-
-QT_BEGIN_NAMESPACE
-
-/*!
-  \since 4.4
-  \class QScriptContextInfo
-
-  \brief The QScriptContextInfo class provides additional information about a QScriptContext.
-
-  \ingroup script
-  \mainclass
-
-  QScriptContextInfo is typically used for debugging purposes. It can
-  provide information about the code being executed, such as the type
-  of the called function, and the original source code location of the
-  current statement.
-
-  If the called function is executing Qt Script code, you can obtain
-  the script location with the functions fileName(), lineNumber() and
-  columnNumber().
-
-  You can obtain the starting line number and ending line number of a
-  Qt Script function definition with functionStartLineNumber() and
-  functionEndLineNumber(), respectively.
-
-  For Qt Script functions and Qt methods (e.g. slots), you can call
-  functionParameterNames() to get the names of the formal parameters of the
-  function.
-
-  For Qt methods and Qt property accessors, you can obtain the index
-  of the underlying QMetaMethod or QMetaProperty by calling
-  functionMetaIndex().
-
-  \sa QScriptContext, QScriptEngineAgent
-*/
-
-/*!
-    \enum QScriptContextInfo::FunctionType
-
-    This enum specifies the type of function being called.
-
-    \value ScriptFunction The function is a Qt Script function, i.e. it was defined through a call to QScriptEngine::evaluate().
-    \value QtFunction The function is a Qt function (a signal, slot or method).
-    \value QtPropertyFunction The function is a Qt property getter or setter.
-    \value NativeFunction The function is a built-in Qt Script function, or it was defined through a call to QScriptEngine::newFunction().
-*/
-
-/*!
-  \internal
-*/
-QScriptContextInfoPrivate::QScriptContextInfoPrivate()
-    : q_ptr(0)
-{
-    ref = 0;
-    functionType = QScriptContextInfo::NativeFunction;
-    functionMetaIndex = -1;
-    functionStartLineNumber = -1;
-    functionEndLineNumber = -1;
-    scriptId = -1;
-    lineNumber = -1;
-    columnNumber = -1;
-}
-
-/*!
-  \internal
-*/
-QScriptContextInfoPrivate::QScriptContextInfoPrivate(const QScriptContext *context)
-    : q_ptr(0)
-{
-    Q_ASSERT(context);
-    ref = 0;
-    functionType = QScriptContextInfo::NativeFunction;
-    functionMetaIndex = -1;
-    functionStartLineNumber = -1;
-    functionEndLineNumber = -1;
-
-    const QScriptContextPrivate *ctx_p = QScriptContextPrivate::get(context);
-#ifndef Q_SCRIPT_NO_EVENT_NOTIFY
-    scriptId = ctx_p->scriptId();
-#endif
-    fileName = ctx_p->fileName();
-    lineNumber = ctx_p->currentLine;
-    columnNumber = ctx_p->currentColumn;
-
-    QScriptValueImpl callee = ctx_p->engine()->toImpl(context->callee());
-    QScriptFunction *fun = callee.toFunction();
-    if (fun) {
-        functionName = fun->functionName();
-        functionStartLineNumber = fun->startLineNumber();
-        functionEndLineNumber = fun->endLineNumber();
-
-        switch (fun->type()) {
-        case QScriptFunction::Unknown:
-            functionType = QScriptContextInfo::NativeFunction;
-            break;
-
-        case QScriptFunction::Script:
-            functionType = QScriptContextInfo::ScriptFunction;
-            for (int i = 0; i < fun->formals.count(); ++i)
-                parameterNames.append(fun->formals.at(i)->s);
-            break;
-
-        case QScriptFunction::C:
-            functionType = QScriptContextInfo::NativeFunction;
-            break;
-
-        case QScriptFunction::C2:
-            functionType = QScriptContextInfo::NativeFunction;
-            break;
-
-        case QScriptFunction::C3:
-            functionType = QScriptContextInfo::NativeFunction;
-            break;
-
-        case QScriptFunction::Qt: {
-            functionType = QScriptContextInfo::QtFunction;
-            functionMetaIndex = ctx_p->calleeMetaIndex;
-
-#ifndef QT_NO_QOBJECT
-            const QMetaObject *meta;
-            meta = static_cast<QScript::QtFunction*>(fun)->metaObject();
-            if (meta) {
-                QMetaMethod method = meta->method(functionMetaIndex);
-                QList<QByteArray> formals = method.parameterNames();
-                for (int i = 0; i < formals.count(); ++i)
-                    parameterNames.append(QLatin1String(formals.at(i)));
-            }
-#endif
-        }   break;
-
-        case QScriptFunction::QtProperty:
-            functionType = QScriptContextInfo::QtPropertyFunction;
-            functionMetaIndex = ctx_p->calleeMetaIndex;
-            break;
-        }
-    }
-}
-
-/*!
-  \internal
-*/
-QScriptContextInfoPrivate::~QScriptContextInfoPrivate()
-{
-}
-
-/*!
-  Constructs a new QScriptContextInfo from the given \a context.
-
-  The relevant information is extracted from the \a context at
-  construction time; i.e. if you continue script execution in the \a
-  context, the new state of the context will not be reflected in a
-  previously created QScriptContextInfo.
-*/
-QScriptContextInfo::QScriptContextInfo(const QScriptContext *context)
-{
-    if (context) {
-        d_ptr = new QScriptContextInfoPrivate(context);
-        d_ptr->q_ptr = this;
-        d_ptr->ref.ref();
-    } else {
-        d_ptr = 0;
-    }
-}
-
-/*!
-  Constructs a new QScriptContextInfo from the \a other info.
-*/
-QScriptContextInfo::QScriptContextInfo(const QScriptContextInfo &other)
-    : d_ptr(other.d_ptr)
-{
-    if (d_ptr)
-        d_ptr->ref.ref();
-}
-
-/*!
-  Constructs a null QScriptContextInfo.
-
-  \sa isNull()
-*/
-QScriptContextInfo::QScriptContextInfo()
-    : d_ptr(0)
-{
-}
-
-/*!
-  Destroys the QScriptContextInfo.
-*/
-QScriptContextInfo::~QScriptContextInfo()
-{
-    if (d_ptr && !d_ptr->ref.deref()) {
-        delete d_ptr;
-        d_ptr = 0;
-    }
-}
-
-/*!
-  Assigns the \a other info to this QScriptContextInfo,
-  and returns a reference to this QScriptContextInfo.
-*/
-QScriptContextInfo &QScriptContextInfo::operator=(const QScriptContextInfo &other)
-{
-    if (d_ptr == other.d_ptr)
-        return *this;
-    if (d_ptr && !d_ptr->ref.deref()) {
-        delete d_ptr;
-        d_ptr = 0;
-    }
-    d_ptr = other.d_ptr;
-    if (d_ptr)
-        d_ptr->ref.ref();
-    return *this;
-}
-
-/*!
-  Returns the ID of the script where the code being executed was
-  defined, or -1 if the ID is not available (i.e. a native function is
-  being executed).
-
-  \sa QScriptEngineAgent::scriptLoad()
-*/
-qint64 QScriptContextInfo::scriptId() const
-{
-    Q_D(const QScriptContextInfo);
-    if (!d)
-        return -1;
-    return d->scriptId;
-}
-
-/*!
-  Returns the name of the file where the code being executed was
-  defined, if available; otherwise returns an empty string.
-
-  For Qt Script code, this function returns the fileName argument
-  that was passed to QScriptEngine::evaluate().
-
-  \sa lineNumber(), functionName()
-*/
-QString QScriptContextInfo::fileName() const
-{
-    Q_D(const QScriptContextInfo);
-    if (!d)
-        return QString();
-    return d->fileName;
-}
-
-/*!
-  Returns the line number corresponding to the statement being
-  executed, or -1 if the line number is not available.
-
-  The line number is only available if Qt Script code is being
-  executed.
-
-  \sa columnNumber(), fileName()
-*/
-int QScriptContextInfo::lineNumber() const
-{
-    Q_D(const QScriptContextInfo);
-    if (!d)
-        return -1;
-    return d->lineNumber;
-}
-
-/*!
-  Returns the column number corresponding to the statement being
-  executed, or -1 if the column number is not available.
-
-  The column number is only available if Qt Script code is being
-  executed.
-
-  \sa lineNumber(), fileName()
-*/
-int QScriptContextInfo::columnNumber() const
-{
-    Q_D(const QScriptContextInfo);
-    if (!d)
-        return -1;
-    return d->columnNumber;
-}
-
-/*!
-  Returns the name of the called function, or an empty string if
-  the name is not available.
-
-  For script functions of type QtPropertyFunction, this function
-  always returns the name of the property; you can use
-  QScriptContext::argumentCount() to differentiate between reads and
-  writes.
-
-  \sa fileName(), functionType()
-*/
-QString QScriptContextInfo::functionName() const
-{
-    Q_D(const QScriptContextInfo);
-    if (!d)
-        return QString();
-    return d->functionName;
-}
-
-/*!
-  Returns the type of the called function.
-
-  \sa functionName(), QScriptContext::callee()
-*/
-QScriptContextInfo::FunctionType QScriptContextInfo::functionType() const
-{
-    Q_D(const QScriptContextInfo);
-    if (!d)
-        return NativeFunction;
-    return d->functionType;
-}
-
-/*!
-  Returns the line number where the definition of the called function
-  starts, or -1 if the line number is not available.
-
-  The starting line number is only available if the functionType() is
-  ScriptFunction.
-
-  \sa functionEndLineNumber(), fileName()
-*/
-int QScriptContextInfo::functionStartLineNumber() const
-{
-    Q_D(const QScriptContextInfo);
-    if (!d)
-        return -1;
-    return d->functionStartLineNumber;
-}
-
-/*!
-  Returns the line number where the definition of the called function
-  ends, or -1 if the line number is not available.
-
-  The ending line number is only available if the functionType() is
-  ScriptFunction.
-
-  \sa functionStartLineNumber()
-*/
-int QScriptContextInfo::functionEndLineNumber() const
-{
-    Q_D(const QScriptContextInfo);
-    if (!d)
-        return -1;
-    return d->functionEndLineNumber;
-}
-
-/*!
-  Returns the names of the formal parameters of the called function,
-  or an empty QStringList if the parameter names are not available.
-
-  \sa QScriptContext::argument()
-*/
-QStringList QScriptContextInfo::functionParameterNames() const
-{
-    Q_D(const QScriptContextInfo);
-    if (!d)
-        return QStringList();
-    return d->parameterNames;
-}
-
-/*!
-  Returns the meta index of the called function, or -1 if the meta
-  index is not available.
-
-  The meta index is only available if the functionType() is QtFunction
-  or QtPropertyFunction. For QtFunction, the meta index can be passed
-  to QMetaObject::method() to obtain the corresponding method
-  definition; for QtPropertyFunction, the meta index can be passed to
-  QMetaObject::property() to obtain the corresponding property
-  definition.
-
-  \sa QScriptContext::thisObject()
-*/
-int QScriptContextInfo::functionMetaIndex() const
-{
-    Q_D(const QScriptContextInfo);
-    if (!d)
-        return -1;
-    return d->functionMetaIndex;
-}
-
-/*!
-  Returns true if this QScriptContextInfo is null, i.e. does not
-  contain any information.
-*/
-bool QScriptContextInfo::isNull() const
-{
-    Q_D(const QScriptContextInfo);
-    return (d == 0);
-}
-
-/*!
-  Returns true if this QScriptContextInfo is equal to the \a other
-  info, otherwise returns false.
-*/
-bool QScriptContextInfo::operator==(const QScriptContextInfo &other) const
-{
-    Q_D(const QScriptContextInfo);
-    const QScriptContextInfoPrivate *od = other.d_func();
-    if (d == od)
-        return true;
-    if (!d || !od)
-        return false;
-    return ((d->scriptId == od->scriptId)
-            && (d->lineNumber == od->lineNumber)
-            && (d->columnNumber == od->columnNumber)
-            && (d->fileName == od->fileName)
-            && (d->functionName == od->functionName)
-            && (d->functionType == od->functionType)
-            && (d->functionStartLineNumber == od->functionStartLineNumber)
-            && (d->functionEndLineNumber == od->functionEndLineNumber)
-            && (d->functionMetaIndex == od->functionMetaIndex)
-            && (d->parameterNames == od->parameterNames));
-}
-
-/*!
-  Returns true if this QScriptContextInfo is not equal to the \a other
-  info, otherwise returns false.
-*/
-bool QScriptContextInfo::operator!=(const QScriptContextInfo &other) const
-{
-    return !(*this == other);
-}
-
-#ifndef QT_NO_DATASTREAM
-/*!
-  \fn QDataStream &operator<<(QDataStream &stream, const QScriptContextInfo &info)
-  \since 4.4
-  \relates QScriptContextInfo
-
-  Writes the given \a info to the specified \a stream.
-*/
-QDataStream &operator<<(QDataStream &out, const QScriptContextInfo &info)
-{
-    out << info.scriptId();
-    out << (qint32)info.lineNumber();
-    out << (qint32)info.columnNumber();
-
-    out << (quint32)info.functionType();
-    out << (qint32)info.functionStartLineNumber();
-    out << (qint32)info.functionEndLineNumber();
-    out << (qint32)info.functionMetaIndex();
-
-    out << info.fileName();
-    out << info.functionName();
-    out << info.functionParameterNames();
-
-    return out;
-}
-
-/*!
-  \fn QDataStream &operator>>(QDataStream &stream, QScriptContextInfo &info)
-  \since 4.4
-  \relates QScriptContextInfo
-
-  Reads a QScriptContextInfo from the specified \a stream into the
-  given \a info.
-*/
-Q_SCRIPT_EXPORT QDataStream &operator>>(QDataStream &in, QScriptContextInfo &info)
-{
-    if (!info.d_ptr) {
-        info.d_ptr = new QScriptContextInfoPrivate();
-        info.d_ptr->ref.ref();
-    }
-
-    in >> info.d_ptr->scriptId;
-
-    qint32 line;
-    in >> line;
-    info.d_ptr->lineNumber = line;
-
-    qint32 column;
-    in >> column;
-    info.d_ptr->columnNumber = column;
-
-    quint32 ftype;
-    in >> ftype;
-    info.d_ptr->functionType = QScriptContextInfo::FunctionType(ftype);
-
-    qint32 startLine;
-    in >> startLine;
-    info.d_ptr->functionStartLineNumber = startLine;
-
-    qint32 endLine;
-    in >> endLine;
-    info.d_ptr->functionEndLineNumber = endLine;
-
-    qint32 metaIndex;
-    in >> metaIndex;
-    info.d_ptr->functionMetaIndex = metaIndex;
-
-    in >> info.d_ptr->fileName;
-    in >> info.d_ptr->functionName;
-    in >> info.d_ptr->parameterNames;
-
-    return in;
-}
-#endif
-
-QT_END_NAMESPACE
-
-#endif // QT_NO_SCRIPT