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/cppchecktextmark.cpp

@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#include "cppcheckconstants.h"
+#include "cppcheckdiagnostic.h"
+#include "cppchecktextmark.h"
+
+#include <utils/utilsicons.h>
+
+#include <QMap>
+
+namespace Cppcheck {
+namespace Internal {
+
+struct Visual
+{
+    Visual(Utils::Theme::Color color, TextEditor::TextMark::Priority priority,
+           const QIcon &icon)
+        : color(color),
+          priority(priority),
+          icon(icon)
+    {}
+    Utils::Theme::Color color;
+    TextEditor::TextMark::Priority priority;
+    QIcon icon;
+};
+
+static Visual getVisual(Diagnostic::Severity type)
+{
+    using Color = Utils::Theme::Color;
+    using Priority = TextEditor::TextMark::Priority;
+
+    static const QMap<Diagnostic::Severity, Visual> visuals{
+        {Diagnostic::Severity::Error, {Color::IconsErrorColor, Priority::HighPriority,
+                        Utils::Icons::CRITICAL.icon()}},
+        {Diagnostic::Severity::Warning, {Color::IconsWarningColor, Priority::NormalPriority,
+                        Utils::Icons::WARNING.icon()}},
+    };
+
+    return visuals.value(type, {Color::IconsInfoColor, Priority::LowPriority,
+                                Utils::Icons::INFO.icon()});
+}
+
+CppcheckTextMark::CppcheckTextMark (const Diagnostic &diagnostic)
+    : TextEditor::TextMark (diagnostic.fileName, diagnostic.lineNumber,
+                            Core::Id(Constants::TEXTMARK_CATEGORY_ID)),
+    m_severity(diagnostic.severity),
+    m_checkId(diagnostic.checkId),
+    m_message(diagnostic.message)
+{
+    const auto visual = getVisual(diagnostic.severity);
+    setPriority(visual.priority);
+    setColor(visual.color);
+    setIcon(visual.icon);
+    setToolTip(toolTipText(diagnostic.severityText));
+    setLineAnnotation(diagnostic.message);
+}
+
+QString CppcheckTextMark::toolTipText(const QString &severityText) const
+{
+    return QString(
+                "<table cellspacing='0' cellpadding='0' width='100%'>"
+                "  <tr>"
+                "    <td align='left'><b>Cppcheck</b></td>"
+                "    <td align='right'>&nbsp;<font color='gray'>%1: %2</font></td>"
+                "  </tr>"
+                "  <tr>"
+                "    <td colspan='2' align='left' style='padding-left:10px'>%3</td>"
+                "  </tr>"
+                "</table>").arg(m_checkId, severityText, m_message);
+}
+
+} // namespace Internal
+} // namespace Cppcheck