Clang: Make clazy UI more fine-grained

...so that specific checks can be enabled/disabled.

This replaces the level radio buttons in Tools > Options > C++ > Code
Model > "Manage..." > Tab: Clazy.

Task-number: QTCREATORBUG-21120
Change-Id: If468d79d3c309b287b4105d83ac31f0b1489c71c
Reviewed-by: Ivan Donchevskii <ivan.donchevskii@qt.io>

scripts/generateClazyChecks.py

@@ -0,0 +1,131 @@
+#!/usr/bin/env python
+############################################################################
+#
+# Copyright (C) 2019 The Qt Company Ltd.
+# 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.
+#
+############################################################################
+
+import argparse
+import json
+import os
+
+def full_header_file_content(checks_initializer_as_string):
+    return '''/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** 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 <vector>
+
+namespace CppTools {
+namespace Constants {
+
+class ClazyCheckInfo
+{
+public:
+    bool isValid() const { return !name.isEmpty() && level >= -1; }
+
+    QString name;
+    int level = -1; // "Manual level"
+    QStringList topics;
+};
+using ClazyCheckInfos = std::vector<ClazyCheckInfo>;
+
+// CLANG-UPGRADE-CHECK: Run 'scripts/generateClazyChecks.py' after Clang upgrade to
+// update this header.
+static const ClazyCheckInfos CLAZY_CHECKS = {
+''' + checks_initializer_as_string + '''
+};
+
+} // namespace Constants
+} // namespace CppTools
+'''
+
+def parse_arguments():
+    parser = argparse.ArgumentParser(description='Clazy checks header file generator')
+    parser.add_argument('--clazy-checks-json-path', help='path to clazy\'s checks.json',
+        default=None, dest='checks_json_path')
+    return parser.parse_args()
+
+def quoted(text):
+   return '"%s"' % (text)
+
+def categories_as_initializer_string(check):
+    if 'categories' not in check:
+        return '{}'
+    out = ''
+    for category in check['categories']:
+        out += quoted(category) + ','
+    if out.endswith(','):
+        out = out[:-1]
+    return '{' + out + '}'
+
+def check_as_initializer_string(check):
+    return '{%s, %d, %s}' %(quoted(check['name']),
+                            check['level'],
+                            categories_as_initializer_string(check))
+
+def checks_as_initializer_string(checks):
+    out = ''
+    for check in checks:
+        out += '    ' + check_as_initializer_string(check) + ',\n'
+    if out.endswith(',\n'):
+        out = out[:-2]
+    return out
+
+def main():
+    arguments = parse_arguments()
+
+    content = file(arguments.checks_json_path).read()
+    checks = json.loads(content)['checks']
+
+    current_path = os.path.dirname(os.path.abspath(__file__))
+    header_path = os.path.abspath(os.path.join(current_path, '..', 'src',
+        'plugins', 'cpptools', 'cpptools_clazychecks.h'))
+
+    with open(header_path, 'w') as f:
+        f.write(full_header_file_content(checks_as_initializer_string(checks)))
+
+if __name__ == "__main__":
+    main()