Clang: Rename directory ipcsource to source

Now it's in accordance with clangrefactoringbackend/source and
clangpchmanagerbackend/source.

Change-Id: I939cfc72cffb8fcde0649f125e6efb6670d1cbc3
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/tools/clangbackend/source/clangsupportivetranslationunitinitializer.cpp

@@ -0,0 +1,134 @@
+/****************************************************************************
+**
+** 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.
+**
+****************************************************************************/
+
+#include "clangsupportivetranslationunitinitializer.h"
+
+#include "clangjobs.h"
+#include "clangtranslationunits.h"
+#include "projectpart.h"
+
+#include <utils/qtcassert.h>
+
+namespace ClangBackEnd {
+
+    // TODO: Check translation unit id?
+
+SupportiveTranslationUnitInitializer::SupportiveTranslationUnitInitializer(
+        const Document &document,
+        Jobs &jobs)
+    : m_document(document)
+    , m_jobs(jobs)
+{
+}
+
+void SupportiveTranslationUnitInitializer::setIsDocumentClosedChecker(
+        const IsDocumentClosedChecker &isDocumentClosedChecker)
+{
+    m_isDocumentClosedChecker = isDocumentClosedChecker;
+}
+
+SupportiveTranslationUnitInitializer::State SupportiveTranslationUnitInitializer::state() const
+{
+    return m_state;
+}
+
+void SupportiveTranslationUnitInitializer::startInitializing()
+{
+    QTC_CHECK(m_state == State::NotInitialized);
+    if (abortIfDocumentIsClosed())
+        return;
+
+    m_document.translationUnits().createAndAppend();
+
+    m_jobs.setJobFinishedCallback([this](const Jobs::RunningJob &runningJob) {
+        checkIfParseJobFinished(runningJob);
+    });
+    addJob(JobRequest::Type::ParseSupportiveTranslationUnit);
+    m_jobs.process();
+
+    m_state = State::WaitingForParseJob;
+}
+
+void SupportiveTranslationUnitInitializer::checkIfParseJobFinished(const Jobs::RunningJob &job)
+{
+    QTC_CHECK(m_state == State::WaitingForParseJob);
+    if (abortIfDocumentIsClosed())
+        return;
+
+    if (job.jobRequest.type == JobRequest::Type::ParseSupportiveTranslationUnit) {
+        m_jobs.setJobFinishedCallback([this](const Jobs::RunningJob &runningJob) {
+            checkIfReparseJobFinished(runningJob);
+        });
+
+        addJob(JobRequest::Type::ReparseSupportiveTranslationUnit);
+
+        m_state = State::WaitingForReparseJob;
+    }
+}
+
+void SupportiveTranslationUnitInitializer::checkIfReparseJobFinished(const Jobs::RunningJob &job)
+{
+    QTC_CHECK(m_state == State::WaitingForReparseJob);
+    if (abortIfDocumentIsClosed())
+        return;
+
+    if (job.jobRequest.type == JobRequest::Type::ReparseSupportiveTranslationUnit) {
+        if (m_document.translationUnits().areAllTranslationUnitsParsed()) {
+            m_jobs.setJobFinishedCallback(nullptr);
+            m_state = State::Initialized;
+        } else {
+            // The supportive translation unit was reparsed, but the document
+            // revision changed in the meanwhile, so try again.
+            addJob(JobRequest::Type::ReparseSupportiveTranslationUnit);
+        }
+    }
+}
+
+bool SupportiveTranslationUnitInitializer::abortIfDocumentIsClosed()
+{
+    QTC_CHECK(m_isDocumentClosedChecker);
+
+    if (m_isDocumentClosedChecker(m_document.filePath(), m_document.projectPart().id())) {
+        m_state = State::Aborted;
+        return true;
+    }
+
+    return false;
+}
+
+void SupportiveTranslationUnitInitializer::addJob(JobRequest::Type jobRequestType)
+{
+    const JobRequest jobRequest = m_jobs.createJobRequest(
+                m_document, jobRequestType, PreferredTranslationUnit::LastUninitialized);
+
+    m_jobs.add(jobRequest);
+}
+
+void SupportiveTranslationUnitInitializer::setState(const State &state)
+{
+    m_state = state;
+}
+
+} // namespace ClangBackEnd