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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:18:55 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:18:55 (GMT)
commite5fcad302d86d316390c6b0f62759a067313e8a9 (patch)
treec2afbf6f1066b6ce261f14341cf6d310e5595bc1 /src/xmlpatterns/projection
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Long live Qt 4.5!
Diffstat (limited to 'src/xmlpatterns/projection')
-rw-r--r--src/xmlpatterns/projection/projection.pri4
-rw-r--r--src/xmlpatterns/projection/qdocumentprojector.cpp214
-rw-r--r--src/xmlpatterns/projection/qdocumentprojector_p.h107
-rw-r--r--src/xmlpatterns/projection/qprojectedexpression_p.h165
4 files changed, 490 insertions, 0 deletions
diff --git a/src/xmlpatterns/projection/projection.pri b/src/xmlpatterns/projection/projection.pri
new file mode 100644
index 0000000..530041d
--- /dev/null
+++ b/src/xmlpatterns/projection/projection.pri
@@ -0,0 +1,4 @@
+SOURCES += $$PWD/qdocumentprojector.cpp
+
+HEADERS += $$PWD/qdocumentprojector_p.h \
+ $$PWD/qprojectedexpression_p.h
diff --git a/src/xmlpatterns/projection/qdocumentprojector.cpp b/src/xmlpatterns/projection/qdocumentprojector.cpp
new file mode 100644
index 0000000..fd0ef29
--- /dev/null
+++ b/src/xmlpatterns/projection/qdocumentprojector.cpp
@@ -0,0 +1,214 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtXmlPatterns 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 "qdocumentprojector_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+DocumentProjector::DocumentProjector(const ProjectedExpression::Vector &paths,
+ QAbstractXmlReceiver *const receiver) : m_paths(paths)
+ , m_pathCount(paths.count())
+ , m_action(ProjectedExpression::Move)
+ , m_nodesInProcess(0)
+ , m_receiver(receiver)
+{
+ Q_ASSERT_X(paths.count() > 0, Q_FUNC_INFO,
+ "Using DocumentProjector with no paths is an "
+ "overhead and has also undefined behavior.");
+ Q_ASSERT(m_receiver);
+}
+
+void DocumentProjector::startElement(const QXmlName name)
+{
+ Q_UNUSED(name);
+
+ switch(m_action)
+ {
+ case ProjectedExpression::KeepSubtree:
+ {
+ m_receiver->startElement(name);
+ /* Fallthrough. */
+ }
+ case ProjectedExpression::Skip:
+ {
+ ++m_nodesInProcess;
+ return;
+ }
+ default:
+ {
+ Q_ASSERT_X(m_action == ProjectedExpression::Move, Q_FUNC_INFO,
+ "We're not supposed to receive Keep here, because "
+ "endElement() should always end that state.");
+
+ for(int i = 0; i < m_pathCount; ++i)
+ {
+ m_action = m_paths.at(i)->actionForElement(name, m_paths[i]);
+
+ switch(m_action)
+ {
+ case ProjectedExpression::Keep:
+ {
+ m_action = ProjectedExpression::Keep;
+ continue;
+ }
+ case ProjectedExpression::KeepSubtree:
+ {
+ /* Ok, at least one path wanted this node. Pass it on,
+ * and exit. */
+ m_receiver->startElement(name);
+ ++m_nodesInProcess;
+ return;
+ }
+ case ProjectedExpression::Skip:
+ {
+ /* This particular path doesn't need it, but
+ * some other path might, so continue looping. */
+ continue;
+ }
+ case ProjectedExpression::Move:
+ Q_ASSERT_X(false, Q_FUNC_INFO, "The action functions can never return Move.");
+ }
+ }
+
+ ++m_nodesInProcess;
+
+ if(m_action == ProjectedExpression::Keep)
+ m_receiver->startElement(name);
+ else
+ {
+ Q_ASSERT(m_action == ProjectedExpression::Skip);
+ }
+ }
+ }
+}
+
+void DocumentProjector::endElement()
+{
+ if(m_action == ProjectedExpression::Keep)
+ {
+ Q_ASSERT(m_nodesInProcess == 1);
+
+ m_receiver->endElement();
+
+ /* We have now kept the single node, and now wants to skip
+ * all its children. */
+ m_action = ProjectedExpression::Skip;
+ m_nodesInProcess = 0;
+ }
+ else if(m_action == ProjectedExpression::KeepSubtree)
+ {
+ m_receiver->endElement();
+ --m_nodesInProcess;
+
+ if(m_nodesInProcess == 0)
+ {
+ /* We have now skipped all the children, let's do
+ * a new path analysis. */
+ m_action = ProjectedExpression::Move;
+ }
+ }
+ else
+ {
+ Q_ASSERT_X(m_action == ProjectedExpression::Skip, Q_FUNC_INFO,
+ "We're not supposed to be in a Move action here.");
+ /* We skip calling m_receiver's endElement() here since we're
+ * skipping. */
+ Q_ASSERT(m_nodesInProcess > 0);
+ --m_nodesInProcess;
+
+ if(m_nodesInProcess == 0)
+ {
+ /* Ok, we've skipped them all, let's do something
+ * new -- let's Move on to the next path! */
+ m_action = ProjectedExpression::Move;
+ }
+ }
+}
+
+void DocumentProjector::attribute(const QXmlName name,
+ const QString &value)
+{
+ Q_UNUSED(name);
+ Q_UNUSED(value);
+}
+
+void DocumentProjector::namespaceBinding(const QXmlName nb)
+{
+ Q_UNUSED(nb);
+}
+
+void DocumentProjector::comment(const QString &value)
+{
+ Q_ASSERT_X(!value.contains(QLatin1String("--")), Q_FUNC_INFO,
+ "Invalid input; it's the caller's responsibility to ensure the input is correct.");
+ Q_UNUSED(value);
+}
+
+void DocumentProjector::characters(const QString &value)
+{
+ Q_UNUSED(value);
+}
+
+void DocumentProjector::processingInstruction(const QXmlName name,
+ const QString &value)
+{
+ Q_ASSERT_X(!value.contains(QLatin1String("?>")), Q_FUNC_INFO,
+ "Invalid input; it's the caller's responsibility to ensure the input is correct.");
+ Q_UNUSED(name);
+ Q_UNUSED(value);
+}
+
+void DocumentProjector::item(const Item &outputItem)
+{
+ Q_UNUSED(outputItem);
+}
+
+void DocumentProjector::startDocument()
+{
+}
+
+void DocumentProjector::endDocument()
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/xmlpatterns/projection/qdocumentprojector_p.h b/src/xmlpatterns/projection/qdocumentprojector_p.h
new file mode 100644
index 0000000..39e74e4
--- /dev/null
+++ b/src/xmlpatterns/projection/qdocumentprojector_p.h
@@ -0,0 +1,107 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtXmlPatterns 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#ifndef Patternist_DocumentProjector_H
+#define Patternist_DocumentProjector_H
+
+#include "qprojectedexpression_p.h"
+#include "qabstractxmlreceiver.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+namespace QPatternist
+{
+ /**
+ * @short
+ *
+ * @author Frans Englich <fenglich@trolltech.com>
+ */
+ class DocumentProjector : public QAbstractXmlReceiver
+ {
+ public:
+ DocumentProjector(const ProjectedExpression::Vector &paths,
+ QAbstractXmlReceiver *const receiver);
+
+ virtual void namespaceBinding(const QXmlName nb);
+
+ virtual void characters(const QString &value);
+ virtual void comment(const QString &value);
+
+ virtual void startElement(const QXmlName name);
+
+ virtual void endElement();
+
+ virtual void attribute(const QXmlName name,
+ const QString &value);
+
+ virtual void processingInstruction(const QXmlName name,
+ const QString &value);
+
+ virtual void item(const Item &item);
+
+ virtual void startDocument();
+ virtual void endDocument();
+
+ ProjectedExpression::Vector m_paths;
+ const int m_pathCount;
+ ProjectedExpression::Action m_action;
+ int m_nodesInProcess;
+ QAbstractXmlReceiver *const m_receiver;
+ };
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif
diff --git a/src/xmlpatterns/projection/qprojectedexpression_p.h b/src/xmlpatterns/projection/qprojectedexpression_p.h
new file mode 100644
index 0000000..8f54902
--- /dev/null
+++ b/src/xmlpatterns/projection/qprojectedexpression_p.h
@@ -0,0 +1,165 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtXmlPatterns 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#ifndef Patternist_ProjectedExpression_H
+#define Patternist_ProjectedExpression_H
+
+#include "qitem_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+namespace QPatternist
+{
+ class ProjectedExpression
+ {
+ public:
+ typedef ProjectedExpression * Ptr;
+ typedef QVector<ProjectedExpression::Ptr> Vector;
+ virtual ~ProjectedExpression()
+ {
+ }
+
+ enum Action
+ {
+ Move = 0,
+ Skip = 1,
+ Keep = 2,
+ KeepSubtree = 4 | Keep
+ };
+
+ virtual Action actionForElement(const QXmlName name,
+ ProjectedExpression::Ptr &next) const
+ {
+ Q_UNUSED(name);
+ Q_UNUSED(next);
+ return Skip;
+ }
+
+ };
+
+ class ProjectedNodeTest
+ {
+ public:
+ typedef ProjectedNodeTest * Ptr;
+ virtual ~ProjectedNodeTest()
+ {
+ }
+
+ virtual bool isMatch(const QXmlNodeModelIndex::NodeKind kind) const
+ {
+ Q_UNUSED(kind);
+ return false;
+ }
+ };
+
+ class ProjectedStep : public ProjectedExpression
+ {
+ public:
+ ProjectedStep(const ProjectedNodeTest::Ptr test,
+ const QXmlNodeModelIndex::Axis axis) : m_test(test),
+ m_axis(axis)
+ {
+ Q_ASSERT(m_test);
+ }
+
+ virtual Action actionForElement(const QXmlName name,
+ ProjectedExpression::Ptr &next) const
+ {
+ Q_UNUSED(name);
+ Q_UNUSED(next);
+ // TODO
+ return Skip;
+ }
+
+ private:
+ const ProjectedNodeTest::Ptr m_test;
+ const QXmlNodeModelIndex::Axis m_axis;
+ };
+
+ class ProjectedPath : public ProjectedExpression
+ {
+ public:
+ ProjectedPath(const ProjectedExpression::Ptr left,
+ const ProjectedExpression::Ptr right) : m_left(left),
+ m_right(right)
+ {
+ Q_ASSERT(m_left);
+ Q_ASSERT(m_right);
+ }
+
+ virtual Action actionForElement(const QXmlName name,
+ ProjectedExpression::Ptr &next) const
+ {
+ ProjectedExpression::Ptr &candidateNext = next;
+ const Action a = m_left->actionForElement(name, candidateNext);
+
+ if(a != Skip)
+ {
+ /* The test accepted it, so let's replace us with the new step. */
+ next = candidateNext;
+ }
+
+ return a;
+ }
+
+ private:
+ const ProjectedExpression::Ptr m_left;
+ const ProjectedExpression::Ptr m_right;
+ };
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif