Clang: Add job queue for each document

...in preparation for follow-up changes. This will enable e.g. a timer
per document.

This does not change any behavior yet.

Change-Id: Ic1dc06de602373c666d47ce7a95ab99e56d389d5
Reviewed-by: David Schulz <david.schulz@qt.io>

src/tools/clangbackend/ipcsource/clangdocumentprocessor.h

@@ -0,0 +1,65 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** 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 General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** 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-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "clangjobrequest.h"
+#include "clangjobs.h"
+
+#include <memory>
+
+namespace ClangBackEnd {
+
+class ClangCodeModelClientInterface;
+class Document;
+class Documents;
+class DocumentProcessorData;
+class JobRequest;
+class ProjectParts;
+class UnsavedFiles;
+
+class DocumentProcessor
+{
+public:
+    DocumentProcessor(const Document &document,
+                      Documents &documents,
+                      UnsavedFiles &unsavedFiles,
+                      ProjectParts &projects,
+                      ClangCodeModelClientInterface &client);
+
+    void addJob(const JobRequest &jobRequest);
+    JobRequests process();
+
+    Document document() const;
+
+public: // for tests
+    QList<Jobs::RunningJob> runningJobs() const;
+    int queueSize() const;
+
+private:
+    std::shared_ptr<DocumentProcessorData> d;
+};
+
+} // namespace ClangBackEnd