Clang: Split clangcompletion.[h|cpp]

First step for refactor them.

Change-Id: If9de084e39ddf31317035ccbbc1fd57d7797d193
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/plugins/clangcodemodel/clangfunctionhintmodel.cpp

@@ -0,0 +1,109 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://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 http://www.qt.io/terms-conditions.  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, The Qt Company gives you certain additional
+** rights.  These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "clangfunctionhintmodel.h"
+
+#include "completionchunkstotextconverter.h"
+
+#include <cplusplus/SimpleLexer.h>
+
+namespace ClangCodeModel {
+namespace Internal {
+
+using namespace CPlusPlus;
+
+ClangFunctionHintModel::ClangFunctionHintModel(const CodeCompletions &functionSymbols)
+    : m_functionSymbols(functionSymbols)
+    , m_currentArg(-1)
+{
+}
+
+void ClangFunctionHintModel::reset()
+{
+}
+
+int ClangFunctionHintModel::size() const
+{
+    return m_functionSymbols.size();
+}
+
+QString ClangFunctionHintModel::text(int index) const
+{
+#if 0
+    // TODO: add the boldening to the result
+    Overview overview;
+    overview.setShowReturnTypes(true);
+    overview.setShowArgumentNames(true);
+    overview.setMarkedArgument(m_currentArg + 1);
+    Function *f = m_functionSymbols.at(index);
+
+    const QString prettyMethod = overview(f->type(), f->name());
+    const int begin = overview.markedArgumentBegin();
+    const int end = overview.markedArgumentEnd();
+
+    QString hintText;
+    hintText += prettyMethod.left(begin).toHtmlEscaped());
+    hintText += "<b>";
+    hintText += prettyMethod.mid(begin, end - begin).toHtmlEscaped());
+    hintText += "</b>";
+    hintText += prettyMethod.mid(end).toHtmlEscaped());
+    return hintText;
+#endif
+    return CompletionChunksToTextConverter::convert(m_functionSymbols.at(index).chunks());
+}
+
+int ClangFunctionHintModel::activeArgument(const QString &prefix) const
+{
+    int argnr = 0;
+    int parcount = 0;
+    SimpleLexer tokenize;
+    Tokens tokens = tokenize(prefix);
+    for (int i = 0; i < tokens.count(); ++i) {
+        const Token &tk = tokens.at(i);
+        if (tk.is(T_LPAREN))
+            ++parcount;
+        else if (tk.is(T_RPAREN))
+            --parcount;
+        else if (! parcount && tk.is(T_COMMA))
+            ++argnr;
+    }
+
+    if (parcount < 0)
+        return -1;
+
+    if (argnr != m_currentArg)
+        m_currentArg = argnr;
+
+    return argnr;
+}
+
+} // namespace Internal
+} // namespace ClangCodeModel
+