C++: Rename ModelItemInfo to IndexInfo.

And move it into its own header and source files.

Change-Id: I37401badd819e028e1d767425759dc0ff27afe31
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

src/plugins/cpptools/indexitem.h

@@ -0,0 +1,160 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 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 CPPTOOLS_INDEXITEM_H
+#define CPPTOOLS_INDEXITEM_H
+
+#include "cpptools_global.h"
+
+#include <utils/function.h>
+
+#include <QIcon>
+#include <QSharedPointer>
+#include <QMetaType>
+
+namespace CppTools {
+
+class CPPTOOLS_EXPORT IndexItem
+{
+    Q_DISABLE_COPY(IndexItem)
+
+public:
+    enum ItemType { Enum, Class, Function, Declaration };
+
+private:
+    IndexItem(const QString &symbolName,
+                  const QString &symbolType,
+                  const QString &symbolScope,
+                  ItemType type,
+                  const QString &fileName,
+                  int line,
+                  int column,
+                  const QIcon &icon)
+        : m_symbolName(symbolName),
+          m_symbolType(symbolType),
+          m_symbolScope(symbolScope),
+          m_fileName(fileName),
+          m_icon(icon),
+          m_type(type),
+          m_line(line),
+          m_column(column)
+    {}
+
+    IndexItem(const QString &fileName, int sizeHint)
+        : m_fileName(fileName)
+        , m_type(Declaration)
+        , m_line(0)
+        , m_column(0)
+    { m_children.reserve(sizeHint); }
+
+public:
+    typedef QSharedPointer<IndexItem> Ptr;
+    static Ptr create(const QString &symbolName,
+                      const QString &symbolType,
+                      const QString &symbolScope,
+                      ItemType type,
+                      const QString &fileName,
+                      int line,
+                      int column,
+                      const QIcon &icon)
+    {
+        return Ptr(new IndexItem(
+                       symbolName, symbolType, symbolScope, type, fileName, line, column, icon));
+    }
+
+    static Ptr create(const QString &fileName, int sizeHint)
+    {
+        return Ptr(new IndexItem(fileName, sizeHint));
+    }
+
+    QString scopedSymbolName() const
+    {
+        return m_symbolScope.isEmpty()
+                ? m_symbolName
+                : m_symbolScope +  QLatin1String("::") + m_symbolName;
+    }
+
+    bool unqualifiedNameAndScope(const QString &defaultName, QString *name, QString *scope) const
+    {
+        *name = defaultName;
+        *scope = m_symbolScope;
+        const QString qualifiedName = scopedSymbolName();
+        const int colonColonPosition = qualifiedName.lastIndexOf(QLatin1String("::"));
+        if (colonColonPosition != -1) {
+            *name = qualifiedName.mid(colonColonPosition + 2);
+            *scope = qualifiedName.left(colonColonPosition);
+            return true;
+        }
+        return false;
+    }
+
+    static QString representDeclaration(const QString &name, const QString &type)
+    {
+        if (type.isEmpty())
+            return QString();
+
+        const QString padding = type.endsWith(QLatin1Char('*'))
+            ? QString()
+            : QString(QLatin1Char(' '));
+        return type + padding + name;
+    }
+
+    QString shortNativeFilePath() const;
+
+    QString symbolName() const { return m_symbolName; }
+    QString symbolType() const { return m_symbolType; }
+    QString symbolScope() const { return m_symbolScope; }
+    QString fileName() const { return m_fileName; }
+    QIcon icon() const { return m_icon; }
+    ItemType type() const { return m_type; }
+    int line() const { return m_line; }
+    int column() const { return m_column; }
+
+    void addChild(IndexItem::Ptr childItem) { m_children.append(childItem); }
+    void squeeze();
+
+    void visitAllChildren(std::function<void (const IndexItem::Ptr &)> f) const;
+
+private:
+    QString m_symbolName; // as found in the code, therefore might be qualified
+    QString m_symbolType;
+    QString m_symbolScope;
+    QString m_fileName;
+    QIcon m_icon;
+    ItemType m_type;
+    int m_line;
+    int m_column;
+    QVector<IndexItem::Ptr> m_children;
+};
+
+} // CppTools namespace
+
+Q_DECLARE_METATYPE(CppTools::IndexItem::Ptr)
+
+#endif // CPPTOOLS_INDEXITEM_H