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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtSCriptTools 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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qscriptxmlparser_p.h"
#include <QtCore/qstringlist.h>
#include <QtCore/qxmlstream.h>
#include <QtCore/qdebug.h>
QT_BEGIN_NAMESPACE
static void tokenUntil(QXmlStreamReader &reader, QXmlStreamReader::TokenType target,
QList<int> &lineNumbers)
{
int level = 0;
while (!reader.atEnd()) {
QXmlStreamReader::TokenType t = reader.readNext();
if ((t == target) && (level == 0))
return;
if (t == QXmlStreamReader::StartElement) {
++level;
QString line = reader.attributes().value(QLatin1String("line")).toString();
if (!line.isEmpty())
lineNumbers.append(line.toInt());
} else if (t == QXmlStreamReader::EndElement) {
--level;
}
}
// Q_ASSERT_X(false, "QScriptXmlParser", "premature end of file");
}
QScriptXmlParser::Result QScriptXmlParser::parse(const QString &xml)
{
QMap<QString, int> functionsInfo;
QList<int> lineNumbers;
QXmlStreamReader reader(xml);
reader.readNext(); // StartDocument
reader.readNext(); // <program>
reader.readNext(); // <source-elements>
while (reader.readNext() == QXmlStreamReader::StartElement) {
// qDebug() << reader.name().toString();
int line = reader.attributes().value(QLatin1String("line")).toString().toInt();
lineNumbers.append(line);
if (reader.name() == QLatin1String("function-declaration")) {
// extract the line number, name and formal parameters
reader.readNext(); // <name>
reader.readNext(); // Characters
QString name = reader.text().toString();
reader.readNext(); // </name>
reader.readNext(); // <formal-parameter-list>
QStringList formalParameters;
while (reader.readNext() == QXmlStreamReader::StartElement) {
reader.readNext(); // Characters
formalParameters.append(reader.text().toString());
reader.readNext(); // </identifier>
}
reader.readNext(); // <function-body>
tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
QString signature;
signature.append(name);
signature.append(QLatin1Char('('));
for (int i = 0; i < formalParameters.size(); ++i) {
if (i > 0)
signature.append(QLatin1String(", "));
signature.append(formalParameters.at(i));
}
signature.append(QLatin1Char(')'));
functionsInfo.insert(signature, line);
} else if (reader.name() == QLatin1String("expression-statement")) {
reader.readNext();
if ((reader.name() == QLatin1String("binary-expression"))
&& reader.attributes().value(QLatin1String("op")) == QLatin1String("=")) {
// try to match a statement of the form Foo.prototype.bar = function() { ... }
// this can be generalized...
QString first, second, third;
reader.readNext(); // LHS
if (reader.name() == QLatin1String("field-member-expression")) {
reader.readNext();
if (reader.name() == QLatin1String("field-member-expression")) {
reader.readNext();
if (reader.name() == QLatin1String("identifier")) {
reader.readNext();
first = reader.text().toString();
}
tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
reader.readNext();
if (reader.name() == QLatin1String("identifier")) {
reader.readNext();
second = reader.text().toString();
}
tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
} else if (reader.name() == QLatin1String("identifier")) {
reader.readNext();
first = reader.text().toString();
}
tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
reader.readNext();
if (reader.name() == QLatin1String("identifier")) {
reader.readNext();
if (second.isEmpty())
second = reader.text().toString();
else
third = reader.text().toString();
}
tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
}
tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
reader.readNext(); // RHS
if (reader.name() == QLatin1String("function-expression")) {
if (!first.isEmpty()) {
QString signature = first;
if (!second.isEmpty()) {
signature.append(QLatin1Char('.'));
signature.append(second);
if (!third.isEmpty()) {
signature.append(QLatin1Char('.'));
signature.append(third);
}
}
signature.append(QLatin1String("()"));
functionsInfo.insert(signature, line);
}
}
tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
}
tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
}
tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
}
reader.readNext(); // </source-elements>
reader.readNext(); // </program>
reader.readNext(); // EndDocument
Q_ASSERT(reader.atEnd());
return Result(functionsInfo, lineNumbers.toSet());
}
QT_END_NAMESPACE
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