Clang: Add clang query pane

We now support highlighting for an example text and for the query.

Change-Id: I88c415ff871cf3e4c2d4fc83d60a8555bf0ce08a
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/clangrefactoring/clangqueryhighlighter.cpp

@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 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.
+**
+****************************************************************************/
+
+#include "clangqueryhighlighter.h"
+
+#include <texteditor/fontsettings.h>
+#include <texteditor/texteditorconstants.h>
+#include <texteditor/texteditorsettings.h>
+
+#include <QTextBlock>
+
+namespace ClangRefactoring {
+
+ClangQueryHighlighter::ClangQueryHighlighter()
+    : m_marker(*this)
+{
+#ifndef UNIT_TESTS
+    TextEditor::FontSettings fontSettings =  TextEditor::TextEditorSettings::fontSettings();
+
+    m_marker.setTextFormats(fontSettings.toTextCharFormat(TextEditor::C_ERROR),
+                            fontSettings.toTextCharFormat(TextEditor::C_ERROR_CONTEXT));
+#endif
+
+    setNoAutomaticHighlighting(true);
+}
+
+void ClangQueryHighlighter::setDiagnostics(
+        const ClangBackEnd::DynamicASTMatcherDiagnosticContainers &diagnostics)
+{
+    using Messages = ClangBackEnd::DynamicASTMatcherDiagnosticMessageContainers;
+    using Contexts = ClangBackEnd::DynamicASTMatcherDiagnosticContextContainers;
+
+    Messages messages;
+    Contexts contexts;
+
+    for (const ClangBackEnd::DynamicASTMatcherDiagnosticContainer &diagnostic : diagnostics) {
+        Messages newMessages = diagnostic.messages();
+        Contexts newContexts = diagnostic.contexts();
+        std::copy(newMessages.begin(), newMessages.end(), std::back_inserter(messages));
+        std::copy(newContexts.begin(), newContexts.end(), std::back_inserter(contexts));
+    }
+
+    m_marker.setMessagesAndContexts(std::move(messages), std::move(contexts));
+
+    rehighlight();
+}
+
+bool ClangQueryHighlighter::hasDiagnostics() const
+{
+    return m_marker.hasMessagesOrContexts();
+}
+
+void ClangQueryHighlighter::highlightBlock(const QString &text)
+{
+    int currentLineNumber = currentBlock().blockNumber() + 1;
+    m_marker.highlightBlock(uint(currentLineNumber), text);
+}
+
+} // namespace ClangRefactoring