Cppcheck: Add cppcheck static analysis tool

Automatically checks currently opened documents and displays results via text marks/annotations.

CppcheckTrigger detects when to check files or clear results.
CppcheckTextMarkManager stores/clears text marks with checks' results.
CppcheckTool generates run arguments and parses output.
CppcheckRunner runs cppcheck binary.
CppcheckOptions configures CppcheckTool.

Task-number: QTCREATORBUG-20418
Change-Id: I8eafeac7af6137d2c9061ae75d4a56c85b3b5a2d
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>
Reviewed-by: Marco Bubke <marco.bubke@qt.io>

src/plugins/cppcheck/cppchecktool.h

@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 Sergey Morozov
+** Contact: https://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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include <cppcheck/cppcheckoptions.h>
+
+#include <QFuture>
+#include <QPointer>
+#include <QRegularExpression>
+
+#include <memory>
+
+namespace Utils {
+class FileName;
+using FileNameList = QList<FileName>;
+}
+
+namespace CppTools {
+class ProjectPart;
+}
+
+namespace ProjectExplorer {
+class Project;
+}
+
+namespace Cppcheck {
+namespace Internal {
+
+class Diagnostic;
+class CppcheckRunner;
+class CppcheckTextMarkManager;
+class CppcheckOptions;
+
+class CppcheckTool final : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit CppcheckTool(CppcheckTextMarkManager &marks);
+    ~CppcheckTool() override;
+
+    void updateOptions(const CppcheckOptions &options);
+    void setProject(ProjectExplorer::Project *project);
+    void check(const Utils::FileNameList &files);
+    void stop(const Utils::FileNameList &files);
+
+    void startParsing();
+    void parseOutputLine(const QString &line);
+    void parseErrorLine(const QString &line);
+    void finishParsing();
+
+    const CppcheckOptions &options() const;
+
+private:
+    void updateArguments();
+    void addToQueue(const Utils::FileNameList &files, CppTools::ProjectPart &part);
+    QStringList additionalArguments(const CppTools::ProjectPart &part) const;
+
+    CppcheckTextMarkManager &m_marks;
+    CppcheckOptions m_options;
+    QPointer<ProjectExplorer::Project> m_project;
+    std::unique_ptr<CppcheckRunner> m_runner;
+    std::unique_ptr<QFutureInterface<void>> m_progress;
+    QHash<QString, QString> m_cachedAdditionalArguments;
+    QVector<QRegExp> m_filters;
+    QRegularExpression m_progressRegexp;
+    QRegularExpression m_messageRegexp;
+};
+
+} // namespace Internal
+} // namespace Cppcheck