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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef PatternistSDK_DebugExpressionFactory_H
#define PatternistSDK_DebugExpressionFactory_H
#include "Global.h"
#include <private/qexpressionfactory_p.h>
#include <private/qfunctionfactory_p.h>
QT_BEGIN_NAMESPACE
namespace QPatternistSDK
{
class ASTItem;
/**
* @short Is a QPatternist::ExpressionFactory, with the
* difference that it provides the hooks for building from a tree of
* debug data from the compiled expression.
*
* This tree can be retrieved via astTree(). The astTree() function
* returns the AST built the last time createExpression() was called.
*
* @ingroup PatternistSDK
* @author Frans Englich <frans.englich@nokia.com>
*/
class Q_PATTERNISTSDK_EXPORT DebugExpressionFactory : public QPatternist::ExpressionFactory
{
public:
DebugExpressionFactory() : m_ast(0)
{
}
typedef QExplicitlySharedDataPointer<DebugExpressionFactory> Ptr;
/**
* Identical to ExpressionFactory::createExpression() with the difference
* that it builds an ASTItem tree which can be accessed via astTree().
*/
virtual QPatternist::Expression::Ptr createExpression(QIODevice *const expr,
const QPatternist::StaticContext::Ptr &context,
const QXmlQuery::QueryLanguage lang,
const QPatternist::SequenceType::Ptr &requiredType,
const QUrl &queryURI,
const QXmlName &initialTemplateName);
/**
* @returns an ASTItem tree built for the last created expression,
* via createExpression().
*/
virtual ASTItem *astTree() const;
/**
* @returns a list containing string representations of all available
* functions in Patternist. Each QString in the returned QStringList
* is a function synopsis for human consumption.
*/
static QStringList availableFunctionSignatures();
protected:
/**
* Performs the ASTItem tree building.
*/
virtual void processTreePass(const QPatternist::Expression::Ptr &tree,
const CompilationStage stage);
void processTemplateRule(const QPatternist::Expression::Ptr &body,
const QPatternist::TemplatePattern::Ptr &pattern,
const QXmlName &mode,
const TemplateCompilationStage stage);
void processNamedTemplate(const QXmlName &name,
const QPatternist::Expression::Ptr &body,
const TemplateCompilationStage stage);
private:
static ASTItem *buildASTTree(const QPatternist::Expression::Ptr &expr,
ASTItem *const parent,
const QPatternist::SequenceType::Ptr &reqType);
ASTItem *m_ast;
};
}
QT_END_NAMESPACE
#endif
// vim: et:ts=4:sw=4:sts=4
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