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Diffstat (limited to 'src/scripttools/debugging/qscriptxmlparser.cpp')
| -rw-r--r-- | src/scripttools/debugging/qscriptxmlparser.cpp | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/src/scripttools/debugging/qscriptxmlparser.cpp b/src/scripttools/debugging/qscriptxmlparser.cpp new file mode 100644 index 0000000..1082759 --- /dev/null +++ b/src/scripttools/debugging/qscriptxmlparser.cpp @@ -0,0 +1,176 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 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 "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 |