Implement change tracking for the product.dependencies array

We added change tracking for the elements of the array in 898d09d479,
but the array itself was not covered.

Change-Id: I7d4083e8bf77f52e1f4a3b5da85ba13cf52fe750
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

1 files changed, 74 insertions, 0 deletions

diff --git a/src/lib/corelib/buildgraph/requesteddependencies.h b/src/lib/corelib/buildgraph/requesteddependencies.h
new file mode 100644
index 000000000..d1df4b636
--- /dev/null
+++ b/src/lib/corelib/buildgraph/requesteddependencies.h
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qbs.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QBS_REQUESTEDDEPENDENCIES_H
+#define QBS_REQUESTEDDEPENDENCIES_H
+
+#include <language/forward_decls.h>
+#include <tools/set.h>
+
+#include <QString>
+
+#include <unordered_map>
+
+namespace qbs {
+namespace Internal {
+class PersistentPool;
+
+class RequestedDependencies
+{
+public:
+    RequestedDependencies() = default;
+    RequestedDependencies(const Set<const ResolvedProduct *> &products) { set(products); }
+    void set(const Set<const ResolvedProduct *> &products);
+    void add(const Set<const ResolvedProduct *> &products);
+    void clear() { m_depsPerProduct.clear(); }
+    bool isUpToDate(const TopLevelProject *project) const;
+
+    void load(PersistentPool &pool);
+    void store(PersistentPool &pool) const;
+private:
+    struct QStringHash { std::size_t operator()(const QString &s) const { return qHash(s); } };
+    std::unordered_map<QString, Set<QString>, QStringHash> m_depsPerProduct;
+};
+
+} // namespace Internal
+} // namespace qbs
+
+#endif // Include guard