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/test/completiontesthelper.cpp

@@ -0,0 +1,148 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#ifdef WITH_TESTS
+
+#include "completiontesthelper.h"
+#include "../clangcompletion.h"
+#include "../clangcompleter.h"
+#include "../clangcodemodelplugin.h"
+
+#include <cpptools/cppcompletionassist.h>
+
+#include <texteditor/basetextdocument.h>
+#include <texteditor/plaintexteditor.h>
+#include <texteditor/codeassist/iassistproposal.h>
+#include <texteditor/codeassist/iassistproposalmodel.h>
+#include <texteditor/codeassist/basicproposalitemlistmodel.h>
+
+#include <utils/fileutils.h>
+#include <utils/changeset.h>
+
+#include <QDir>
+#include <QtTest>
+
+using namespace ClangCodeModel;
+using namespace ClangCodeModel::Internal;
+using namespace TextEditor;
+using namespace CPlusPlus;
+using namespace CppTools::Internal;
+
+namespace ClangCodeModel {
+namespace Internal {
+
+CompletionTestHelper::CompletionTestHelper(QObject *parent) :
+    QObject(parent),
+    m_completer(new ClangCompleter()),
+    m_position(m_line),
+    m_line(0),
+    m_column(0)
+{
+    m_clangOptions << QLatin1String("-std=c++0x")
+                   << QLatin1String("-ObjC++");
+}
+
+CompletionTestHelper::~CompletionTestHelper()
+{
+}
+
+void CompletionTestHelper::operator <<(const QString &fileName)
+{
+    QResource res(QLatin1String(":/unittests/ClangCodeModel/") + fileName);
+    m_sourceCode = QByteArray(reinterpret_cast<const char*>(res.data()), res.size());
+    findCompletionPos();
+
+    QString path = QDir::tempPath() + QLatin1String("/file.h");
+    ::Utils::FileSaver srcSaver(path);
+    srcSaver.write(m_sourceCode);
+    srcSaver.finalize();
+
+    m_completer->setFileName(path);
+    m_completer->setOptions(m_clangOptions);
+}
+
+QStringList CompletionTestHelper::codeCompleteTexts()
+{
+    QList<CodeCompletionResult> results =
+            m_completer->codeCompleteAt(m_line, m_column, m_unsavedFiles);
+
+    QStringList completions;
+    foreach (const CodeCompletionResult& ccr, results)
+         completions << ccr.text();
+    return completions;
+}
+
+QList<CodeCompletionResult> CompletionTestHelper::codeComplete()
+{
+    return m_completer->codeCompleteAt(m_line, m_column, m_unsavedFiles);
+}
+
+int CompletionTestHelper::position() const
+{
+    return m_position;
+}
+
+const QByteArray &CompletionTestHelper::source() const
+{
+    return m_sourceCode;
+}
+
+void CompletionTestHelper::addOption(const QString &option)
+{
+    m_clangOptions << option;
+}
+
+void CompletionTestHelper::findCompletionPos()
+{
+    m_position = m_sourceCode.indexOf("<<<<");
+    QVERIFY(m_position != -1);
+    m_sourceCode[m_position] = ' ';
+    m_sourceCode[m_position + 1] = ' ';
+    m_sourceCode[m_position + 2] = ' ';
+    m_sourceCode[m_position + 3] = ' ';
+
+    // substring from 0 to '@' position
+    QByteArray substr(m_sourceCode.data(), m_position);
+
+    m_line = 1;
+    m_column = 1;
+    for (int i = 0; i < substr.size(); ++i) {
+        if (substr[i] == '\n') {
+            ++m_line;
+            m_column = 1;
+        } else {
+            ++m_column;
+        }
+    }
+}
+
+} // namespace Internal
+} // namespace ClangCodeModel
+
+#endif