CMake: Make all readers use isReadyNow() signal

The tealeafreader used to not ever use this signal and used
the isReady() method to short-circuit the whole mechanism.

Change-Id: I2f7caedeedf977c70a5d7807e3a92775757a6fef
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/cmakeprojectmanager/builddirmanager.cpp

@@ -107,8 +107,11 @@ void BuildDirManager::emitErrorOccured(const QString &message) const
 void BuildDirManager::updateReaderType(const BuildDirParameters &p,
                                        std::function<void()> todo)
 {
-    if (!m_reader || !m_reader->isCompatible(p)) {
+    if (!m_reader || !m_reader->isCompatible(p))
         m_reader = BuildDirReader::createReader(p);
+
+    QTC_ASSERT(m_reader, return);
+
     connect(m_reader.get(), &BuildDirReader::configurationStarted,
             this, &BuildDirManager::parsingStarted);
     connect(m_reader.get(), &BuildDirReader::dataAvailable,
@@ -116,15 +119,9 @@ void BuildDirManager::updateReaderType(const BuildDirParameters &p,
     connect(m_reader.get(), &BuildDirReader::errorOccured,
             this, &BuildDirManager::emitErrorOccured);
     connect(m_reader.get(), &BuildDirReader::dirty, this, &BuildDirManager::becameDirty);
-    }
+    connect(m_reader.get(), &BuildDirReader::isReadyNow, this, todo);
-    QTC_ASSERT(m_reader, return);
 
     m_reader->setParameters(p);
-
-    if (m_reader->isReady())
-        todo();
-    else
-        connect(m_reader.get(), &BuildDirReader::isReadyNow, this, todo);
 }
 
 bool BuildDirManager::hasConfigChanged()

src/plugins/cmakeprojectmanager/builddirreader.cpp

@@ -48,10 +48,5 @@ std::unique_ptr<BuildDirReader> BuildDirReader::createReader(const BuildDirParam
     return std::make_unique<TeaLeafReader>();
 }
 
-void BuildDirReader::setParameters(const BuildDirParameters &p)
-{
-    m_parameters = p;
-}
-
 } // namespace Internal
 } // namespace CMakeProjectManager

src/plugins/cmakeprojectmanager/builddirreader.h

@@ -53,14 +53,13 @@ class BuildDirReader : public QObject
 
 public:
     static std::unique_ptr<BuildDirReader> createReader(const BuildDirParameters &p);
-    virtual void setParameters(const BuildDirParameters &p);
+    virtual void setParameters(const BuildDirParameters &p) = 0;
 
     virtual bool isCompatible(const BuildDirParameters &p) = 0;
     virtual void resetData() = 0;
     virtual void parse(bool forceConfiguration) = 0;
     virtual void stop() = 0;
 
-    virtual bool isReady() const { return true; }
     virtual bool isParsing() const = 0;
 
     virtual QList<CMakeBuildTarget> takeBuildTargets() = 0;

src/plugins/cmakeprojectmanager/servermodereader.cpp

@@ -101,7 +101,7 @@ void ServerModeReader::setParameters(const BuildDirParameters &p)
     CMakeTool *cmake = p.cmakeTool();
     QTC_ASSERT(cmake, return);
 
-    BuildDirReader::setParameters(p);
+    m_parameters = p;
     if (!m_cmakeServer) {
         m_cmakeServer.reset(new ServerMode(p.environment,
                                            p.sourceDirectory, p.workDirectory,
@@ -213,11 +213,6 @@ void ServerModeReader::stop()
     m_parser.flush();
 }
 
-bool ServerModeReader::isReady() const
-{
-    return m_cmakeServer->isConnected();
-}
-
 bool ServerModeReader::isParsing() const
 {
     return static_cast<bool>(m_future);

src/plugins/cmakeprojectmanager/servermodereader.h

@@ -53,7 +53,6 @@ public:
     void parse(bool forceConfiguration) final;
     void stop() final;
 
-    bool isReady() const final;
     bool isParsing() const final;
 
     QList<CMakeBuildTarget> takeBuildTargets() final;

src/plugins/cmakeprojectmanager/tealeafreader.cpp

@@ -152,6 +152,12 @@ TeaLeafReader::~TeaLeafReader()
     resetData();
 }
 
+void TeaLeafReader::setParameters(const BuildDirParameters &p)
+{
+    m_parameters = p;
+    emit isReadyNow();
+}
+
 bool TeaLeafReader::isCompatible(const BuildDirParameters &p)
 {
     if (!p.cmakeTool())

src/plugins/cmakeprojectmanager/tealeafreader.h

@@ -46,6 +46,8 @@ public:
     TeaLeafReader();
     ~TeaLeafReader() final;
 
+    void setParameters(const BuildDirParameters &p) final;
+
     bool isCompatible(const BuildDirParameters &p) final;
     void resetData() final;
     void parse(bool forceConfiguration) final;