Clang: Extract and rename backend classes

IpcCommunicator -> BackendCommunicator
IpcSender -> BackendSender
IpcReceiver -> BackendReceiver

Change-Id: I110ebe8d185db7ff47d2d5de9b786262520926d0
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/clangcodemodel/clangbackendreceiver.h

@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#pragma once
+
+#include <cpptools/cppcursorinfo.h>
+#include <cpptools/cppsymbolinfo.h>
+
+#include <clangsupport/clangcodemodelclientinterface.h>
+
+#include <QFuture>
+#include <QPointer>
+#include <QTextDocument>
+
+namespace TextEditor { class TextEditorWidget; }
+
+namespace ClangCodeModel {
+namespace Internal {
+
+class ClangCompletionAssistProcessor;
+
+class BackendReceiver : public ClangBackEnd::ClangCodeModelClientInterface
+{
+public:
+    BackendReceiver();
+    ~BackendReceiver() override;
+
+    using AliveHandler = std::function<void ()>;
+    void setAliveHandler(const AliveHandler &handler);
+
+    void addExpectedCodeCompletedMessage(quint64 ticket, ClangCompletionAssistProcessor *processor);
+    void deleteProcessorsOfEditorWidget(TextEditor::TextEditorWidget *textEditorWidget);
+
+    QFuture<CppTools::CursorInfo>
+    addExpectedReferencesMessage(quint64 ticket,
+                                 QTextDocument *textDocument,
+                                 const CppTools::SemanticInfo::LocalUseMap &localUses);
+    QFuture<CppTools::SymbolInfo> addExpectedRequestFollowSymbolMessage(quint64 ticket);
+    bool isExpectingCodeCompletedMessage() const;
+
+    void reset();
+
+private:
+    void alive() override;
+    void echo(const ClangBackEnd::EchoMessage &message) override;
+    void codeCompleted(const ClangBackEnd::CodeCompletedMessage &message) override;
+
+    void documentAnnotationsChanged(const ClangBackEnd::DocumentAnnotationsChangedMessage &message) override;
+    void references(const ClangBackEnd::ReferencesMessage &message) override;
+    void followSymbol(const ClangBackEnd::FollowSymbolMessage &message) override;
+
+private:
+    AliveHandler m_aliveHandler;
+    QHash<quint64, ClangCompletionAssistProcessor *> m_assistProcessorsTable;
+
+    struct ReferencesEntry {
+        ReferencesEntry() = default;
+        ReferencesEntry(QFutureInterface<CppTools::CursorInfo> futureInterface,
+                        QTextDocument *textDocument,
+                        const CppTools::SemanticInfo::LocalUseMap &localUses)
+            : futureInterface(futureInterface)
+            , textDocument(textDocument)
+            , localUses(localUses) {}
+        QFutureInterface<CppTools::CursorInfo> futureInterface;
+        QPointer<QTextDocument> textDocument;
+        CppTools::SemanticInfo::LocalUseMap localUses;
+    };
+    QHash<quint64, ReferencesEntry> m_referencesTable;
+
+    QHash<quint64, QFutureInterface<CppTools::SymbolInfo>> m_followTable;
+};
+
+} // namespace Internal
+} // namespace ClangCodeModel