To-do plugin added.

Change-Id: Ideaf91b2f9ce3d9252ca40b7224a2ab4238341f1
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

src/plugins/todo/todoitemsscanner.cpp

@@ -0,0 +1,76 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2012 Dmitry Savchenko.
+** Copyright (c) 2010 Vasiliy Sorokin.
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+**
+** GNU Lesser General Public License Usage
+**
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** Other Usage
+**
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**************************************************************************/
+
+#include "todoitemsscanner.h"
+#include "lineparser.h"
+
+#include <projectexplorer/projectexplorer.h>
+#include <projectexplorer/project.h>
+
+namespace Todo {
+namespace Internal {
+
+TodoItemsScanner::TodoItemsScanner(const KeywordList &keywordList, QObject *parent) :
+    QObject(parent)
+{
+    setKeywordList(keywordList);
+}
+
+void TodoItemsScanner::setKeywordList(const KeywordList &keywordList)
+{
+    m_keywordList = keywordList;
+    keywordListChanged();
+}
+
+// Descendants can override and make a request for full rescan here if needed
+void TodoItemsScanner::keywordListChanged()
+{
+}
+
+// Descendants can use this to process comment lines
+void TodoItemsScanner::processCommentLine(const QString &fileName, const QString &comment,
+    unsigned lineNumber, QList<TodoItem> &outItemList)
+{
+    LineParser parser(m_keywordList);
+    QList<TodoItem> newItemList = parser.parse(comment);
+
+    for (int i = 0; i < newItemList.count(); ++i) {
+        newItemList[i].line = lineNumber;
+        newItemList[i].file = fileName;
+    }
+
+    outItemList << newItemList;
+}
+
+}
+}