/**************************************************************************** | |
** | |
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
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** Contact: Nokia Corporation (qt-info@nokia.com) | |
** | |
** This file is part of the QtSCriptTools module of the Qt Toolkit. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
** 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 | |
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** file. Please review the following information to ensure the GNU Lesser | |
** General Public License version 2.1 requirements will be met: | |
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** | |
** 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. | |
** | |
** 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: | |
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** Other Usage | |
** Alternatively, this file may be used in accordance with the terms and | |
** conditions contained in a signed written agreement between you and Nokia. | |
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** $QT_END_LICENSE$ | |
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****************************************************************************/ | |
#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 |