Add command for showing a tree of build graph nodes.

This is helpful for getting an overview of the parent-child
relationships.

Change-Id: I097921fc77e36ca3f34e548aa6132ef8e1cd9295
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/src/lib/corelib/buildgraph/nodetreedumper.h b/src/lib/corelib/buildgraph/nodetreedumper.h
new file mode 100644
index 000000000..c60087bfe
--- /dev/null
+++ b/src/lib/corelib/buildgraph/nodetreedumper.h
@@ -0,0 +1,73 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Build Suite.
+**
+** 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://www.qt.io/licensing.  For further information
+** use the contact form at http://www.qt.io/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.
+**
+****************************************************************************/
+#ifndef QBS_NODETREEDUMPER_H
+#define QBS_NODETREEDUMPER_H
+
+#include "artifactset.h"
+#include "buildgraphvisitor.h"
+#include <language/forward_decls.h>
+
+#include <QList>
+
+QT_BEGIN_NAMESPACE
+class QIODevice;
+QT_END_NAMESPACE
+
+namespace qbs {
+namespace Internal {
+
+class NodeTreeDumper : public BuildGraphVisitor
+{
+public:
+    NodeTreeDumper(QIODevice &outDevice);
+
+    void start(const QList<ResolvedProductPtr> &products);
+
+private:
+    bool visit(Artifact *artifact) Q_DECL_OVERRIDE;
+    void endVisit(Artifact *artifact) Q_DECL_OVERRIDE;
+    bool visit(RuleNode *rule) Q_DECL_OVERRIDE;
+    void endVisit(RuleNode *rule) Q_DECL_OVERRIDE;
+
+    void doEndVisit();
+    void indent();
+    void unindent();
+    QByteArray indentation() const;
+
+    QIODevice &m_outDevice;
+    ResolvedProductPtr m_currentProduct;
+    ArtifactSet m_visited;
+    unsigned int m_indentation;
+};
+
+} // namespace Internal
+} // namespace qbs
+
+#endif // Include guard.