Add experimental clang code-model plug-in.

Previously known as the wip/clang branch.

Contributors (in alphabetical order):
- Christian Kamm <christian.d.kamm@nokia.com>
- Erik Verbruggen <erik.verbruggen@digia.com>
- Leandro Melo <leandro.melo@nokia.com>
- Peter Kuemmel <syntheticpp@gmx.net>
- Sergey Shambir <sergey.shambir.auto@gmail.com>

Change-Id: I4c3ff600a19b6732641c1d5ef28236bf2cc17737
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/clangcodemodel/clangcompletion.h

@@ -0,0 +1,144 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** 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 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 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, 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 CPPEDITOR_INTERNAL_CLANGCOMPLETION_H
+#define CPPEDITOR_INTERNAL_CLANGCOMPLETION_H
+
+#include "clangcompleter.h"
+
+#include <cplusplus/Icons.h>
+
+#include <cpptools/cppcompletionassistprovider.h>
+
+#include <texteditor/codeassist/basicproposalitem.h>
+#include <texteditor/codeassist/completionassistprovider.h>
+#include <texteditor/codeassist/defaultassistinterface.h>
+#include <texteditor/codeassist/iassistprocessor.h>
+
+#include <QStringList>
+#include <QTextCursor>
+
+namespace ClangCodeModel {
+
+namespace Internal {
+class ClangAssistProposalModel;
+
+class ClangCompletionAssistProvider : public CppTools::CppCompletionAssistProvider
+{
+public:
+    ClangCompletionAssistProvider();
+
+    virtual TextEditor::IAssistProcessor *createProcessor() const;
+    virtual TextEditor::IAssistInterface *createAssistInterface(
+            ProjectExplorer::Project *project, TextEditor::BaseTextEditor *editor,
+            QTextDocument *document, int position, TextEditor::AssistReason reason) const;
+
+private:
+    ClangCodeModel::ClangCompleter::Ptr m_clangCompletionWrapper;
+};
+
+} // namespace Internal
+
+class CLANG_EXPORT ClangCompletionAssistInterface: public TextEditor::DefaultAssistInterface
+{
+public:
+    ClangCompletionAssistInterface(ClangCodeModel::ClangCompleter::Ptr clangWrapper,
+                                   QTextDocument *document,
+                                   int position,
+                                   const QString &fileName,
+                                   TextEditor::AssistReason reason,
+                                   const QStringList &options,
+                                   const QStringList &includePaths,
+                                   const QStringList &frameworkPaths,
+                                   const Internal::PchInfo::Ptr &pchInfo);
+
+    ClangCodeModel::ClangCompleter::Ptr clangWrapper() const
+    { return m_clangWrapper; }
+
+    const ClangCodeModel::Internal::UnsavedFiles &unsavedFiles() const
+    { return m_unsavedFiles; }
+
+    bool objcEnabled() const;
+
+    const QStringList &options() const
+    { return m_options; }
+
+    const QStringList &includePaths() const
+    { return m_includePaths; }
+
+    const QStringList &frameworkPaths() const
+    { return m_frameworkPaths; }
+
+private:
+    ClangCodeModel::ClangCompleter::Ptr m_clangWrapper;
+    ClangCodeModel::Internal::UnsavedFiles m_unsavedFiles;
+    QStringList m_options, m_includePaths, m_frameworkPaths;
+    Internal::PchInfo::Ptr m_savedPchPointer;
+};
+
+class CLANG_EXPORT ClangCompletionAssistProcessor : public TextEditor::IAssistProcessor
+{
+public:
+    ClangCompletionAssistProcessor();
+    virtual ~ClangCompletionAssistProcessor();
+
+    virtual TextEditor::IAssistProposal *perform(const TextEditor::IAssistInterface *interface);
+
+private:
+    int startCompletionHelper();
+    int startOfOperator(int pos, unsigned *kind, bool wantFunctionCall) const;
+    int findStartOfName(int pos = -1) const;
+    bool accepts() const;
+    TextEditor::IAssistProposal *createContentProposal();
+
+    int startCompletionInternal(const QString fileName,
+                                unsigned line, unsigned column,
+                                int endOfExpression);
+
+    bool completeInclude(const QTextCursor &cursor);
+    void completeIncludePath(const QString &realPath, const QStringList &suffixes);
+    void completePreprocessor();
+    void addCompletionItem(const QString &text,
+                           const QIcon &icon = QIcon(),
+                           int order = 0,
+                           const QVariant &data = QVariant());
+
+private:
+    int m_startPosition;
+    QScopedPointer<const ClangCompletionAssistInterface> m_interface;
+    QList<TextEditor::BasicProposalItem *> m_completions;
+    CPlusPlus::Icons m_icons;
+    QStringList m_preprocessorCompletions;
+    QScopedPointer<Internal::ClangAssistProposalModel> m_model;
+    TextEditor::IAssistProposal *m_hintProposal;
+};
+
+} // namespace Clang
+
+#endif // CPPEDITOR_INTERNAL_CLANGCOMPLETION_H