Merge CppTools into CppEditor

There was no proper separation of responsibilities between these
plugins. In particular, CppTools had lots of editor-related
functionality, so it's not clear why it was separated out in the first
place.
In fact, for a lot of code, it seemed quite arbitrary where it was put
(just one example: switchHeaderSource() was in CppTools, wheras
switchDeclarationDefinition() was in CppEditor).
Merging the plugins will enable us to get rid of various convoluted
pseudo-abstractions that were only introduced to keep up the artificial
separation.

Change-Id: Iafc3bce625b4794f6d4aa03df6cddc7f2d26716a
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/cppeditor/baseeditordocumentprocessor.h

@@ -0,0 +1,132 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 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 "baseeditordocumentparser.h"
+#include "cppcursorinfo.h"
+#include "cppsymbolinfo.h"
+#include "cppsemanticinfo.h"
+#include "cppeditor_global.h"
+
+#include <coreplugin/helpitem.h>
+#include <texteditor/codeassist/assistinterface.h>
+#include <texteditor/quickfix.h>
+#include <texteditor/texteditor.h>
+#include <texteditor/textdocument.h>
+
+#include <cplusplus/CppDocument.h>
+
+#include <QTextEdit>
+
+#include <QVariant>
+
+#include <functional>
+
+namespace TextEditor { class TextDocument; }
+
+namespace CppEditor {
+
+// For clang code model only, move?
+struct CPPEDITOR_EXPORT ToolTipInfo {
+    QString text;
+    QString briefComment;
+
+    QStringList qDocIdCandidates;
+    QString qDocMark;
+    Core::HelpItem::Category qDocCategory;
+    QVariant value;
+
+    QString sizeInBytes;
+};
+
+class CPPEDITOR_EXPORT BaseEditorDocumentProcessor : public QObject
+{
+    Q_OBJECT
+
+public:
+    BaseEditorDocumentProcessor(QTextDocument *textDocument, const QString &filePath);
+    ~BaseEditorDocumentProcessor() override;
+
+    void run(bool projectsUpdated = false);
+    virtual void semanticRehighlight() = 0;
+    virtual void recalculateSemanticInfoDetached(bool force) = 0;
+    virtual SemanticInfo recalculateSemanticInfo() = 0;
+    virtual CPlusPlus::Snapshot snapshot() = 0;
+    virtual BaseEditorDocumentParser::Ptr parser() = 0;
+    virtual bool isParserRunning() const = 0;
+
+    virtual TextEditor::QuickFixOperations
+    extraRefactoringOperations(const TextEditor::AssistInterface &assistInterface);
+
+    virtual void invalidateDiagnostics();
+
+    virtual void editorDocumentTimerRestarted();
+
+    virtual void setParserConfig(const BaseEditorDocumentParser::Configuration &config);
+
+    virtual QFuture<CursorInfo> cursorInfo(const CursorInfoParams &params) = 0;
+    virtual QFuture<CursorInfo> requestLocalReferences(const QTextCursor &cursor) = 0;
+    virtual QFuture<SymbolInfo> requestFollowSymbol(int line, int column) = 0;
+    virtual QFuture<ToolTipInfo> toolTipInfo(const QByteArray &codecName, int line, int column);
+
+    QString filePath() const { return m_filePath; }
+
+public:
+    using HeaderErrorDiagnosticWidgetCreator = std::function<QWidget*()>;
+
+signals:
+    // Signal interface to implement
+    void projectPartInfoUpdated(const ProjectPartInfo &projectPartInfo);
+
+    void codeWarningsUpdated(unsigned revision,
+                             const QList<QTextEdit::ExtraSelection> &selections,
+                             const HeaderErrorDiagnosticWidgetCreator &creator,
+                             const TextEditor::RefactorMarkers &refactorMarkers);
+
+    void ifdefedOutBlocksUpdated(unsigned revision,
+                                 const QList<TextEditor::BlockRange> &ifdefedOutBlocks);
+
+    void cppDocumentUpdated(const CPlusPlus::Document::Ptr document);    // TODO: Remove me
+    void semanticInfoUpdated(const SemanticInfo semanticInfo); // TODO: Remove me
+
+protected:
+    static void runParser(QFutureInterface<void> &future,
+                          BaseEditorDocumentParser::Ptr parser,
+                          BaseEditorDocumentParser::UpdateParams updateParams);
+
+    // Convenience
+    unsigned revision() const { return static_cast<unsigned>(m_textDocument->revision()); }
+    QTextDocument *textDocument() const { return m_textDocument; }
+
+private:
+    virtual void runImpl(const BaseEditorDocumentParser::UpdateParams &updateParams) = 0;
+
+private:
+    QString m_filePath;
+    QTextDocument *m_textDocument;
+};
+
+} // namespace CppEditor