CppTools: Move ProjectPart in its own header file

Also extracting inline HeaderPath class and change projects list in vector
because the size is  larger than a pointer.

Change-Id: I885fdff3fe9bccc877634d1615249755f5b674fd
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

34 files changed, 532 insertions, 372 deletions

diff --git a/src/plugins/clangcodemodel/clangcompletionassistinterface.cpp b/src/plugins/clangcodemodel/clangcompletionassistinterface.cpp
index f549cd8e4d..761cf4cd35 100644
--- a/src/plugins/clangcodemodel/clangcompletionassistinterface.cpp
+++ b/src/plugins/clangcodemodel/clangcompletionassistinterface.cpp
@@ -41,7 +41,7 @@ ClangCompletionAssistInterface::ClangCompletionAssistInterface(
         int position,
         const QString &fileName,
         TextEditor::AssistReason reason,
-        const CppTools::ProjectPart::HeaderPaths &headerPaths,
+        const CppTools::ProjectPartHeaderPaths &headerPaths,
         const CPlusPlus::LanguageFeatures &features)
     : AssistInterface(textEditorWidget->document(), position, fileName, reason)
     , m_ipcCommunicator(ipcCommunicator)
@@ -56,7 +56,7 @@ bool ClangCompletionAssistInterface::objcEnabled() const
     return true; // TODO:
 }
 
-const CppTools::ProjectPart::HeaderPaths &ClangCompletionAssistInterface::headerPaths() const
+const CppTools::ProjectPartHeaderPaths &ClangCompletionAssistInterface::headerPaths() const
 {
     return m_headerPaths;
 }
@@ -66,7 +66,7 @@ CPlusPlus::LanguageFeatures ClangCompletionAssistInterface::languageFeatures() c
     return m_languageFeatures;
 }
 
-void ClangCompletionAssistInterface::setHeaderPaths(const CppTools::ProjectPart::HeaderPaths &headerPaths)
+void ClangCompletionAssistInterface::setHeaderPaths(const CppTools::ProjectPartHeaderPaths &headerPaths)
 {
     m_headerPaths = headerPaths;
 }
diff --git a/src/plugins/clangcodemodel/clangcompletionassistinterface.h b/src/plugins/clangcodemodel/clangcompletionassistinterface.h
index 7be7f1431a..4bac467417 100644
--- a/src/plugins/clangcodemodel/clangcompletionassistinterface.h
+++ b/src/plugins/clangcodemodel/clangcompletionassistinterface.h
@@ -47,21 +47,21 @@ public:
                                    int position,
                                    const QString &fileName,
                                    TextEditor::AssistReason reason,
-                                   const CppTools::ProjectPart::HeaderPaths &headerPaths,
+                                   const CppTools::ProjectPartHeaderPaths &headerPaths,
                                    const CPlusPlus::LanguageFeatures &features);
 
     IpcCommunicator &ipcCommunicator() const;
     bool objcEnabled() const;
-    const CppTools::ProjectPart::HeaderPaths &headerPaths() const;
+    const CppTools::ProjectPartHeaderPaths &headerPaths() const;
     CPlusPlus::LanguageFeatures languageFeatures() const;
     const TextEditor::TextEditorWidget *textEditorWidget() const;
 
-    void setHeaderPaths(const CppTools::ProjectPart::HeaderPaths &headerPaths); // For tests
+    void setHeaderPaths(const CppTools::ProjectPartHeaderPaths &headerPaths); // For tests
 
 private:
     IpcCommunicator &m_ipcCommunicator;
     QStringList m_options;
-    CppTools::ProjectPart::HeaderPaths m_headerPaths;
+    CppTools::ProjectPartHeaderPaths m_headerPaths;
     CPlusPlus::LanguageFeatures m_languageFeatures;
     const TextEditor::TextEditorWidget *m_textEditorWidget;
 };
diff --git a/src/plugins/clangcodemodel/clangcompletionassistprocessor.cpp b/src/plugins/clangcodemodel/clangcompletionassistprocessor.cpp
index ded48db494..284e9fe3d7 100644
--- a/src/plugins/clangcodemodel/clangcompletionassistprocessor.cpp
+++ b/src/plugins/clangcodemodel/clangcompletionassistprocessor.cpp
@@ -565,9 +565,9 @@ bool ClangCompletionAssistProcessor::completeInclude(const QTextCursor &cursor)
     }
 
     // Make completion for all relevant includes
-    CppTools::ProjectPart::HeaderPaths headerPaths = m_interface->headerPaths();
-    const CppTools::ProjectPart::HeaderPath currentFilePath(QFileInfo(m_interface->fileName()).path(),
-                                                            CppTools::ProjectPart::HeaderPath::IncludePath);
+    CppTools::ProjectPartHeaderPaths headerPaths = m_interface->headerPaths();
+    const CppTools::ProjectPartHeaderPath currentFilePath(QFileInfo(m_interface->fileName()).path(),
+                                                          CppTools::ProjectPartHeaderPath::IncludePath);
     if (!headerPaths.contains(currentFilePath))
         headerPaths.append(currentFilePath);
 
@@ -575,7 +575,7 @@ bool ClangCompletionAssistProcessor::completeInclude(const QTextCursor &cursor)
     const ::Utils::MimeType mimeType = mdb.mimeTypeForName(QLatin1String("text/x-c++hdr"));
     const QStringList suffixes = mimeType.suffixes();
 
-    foreach (const CppTools::ProjectPart::HeaderPath &headerPath, headerPaths) {
+    foreach (const CppTools::ProjectPartHeaderPath &headerPath, headerPaths) {
         QString realPath = headerPath.path;
         if (!directoryPrefix.isEmpty()) {
             realPath += QLatin1Char('/');
diff --git a/src/plugins/clangcodemodel/test/clangcodecompletion_test.cpp b/src/plugins/clangcodemodel/test/clangcodecompletion_test.cpp
index 0f003c2e1e..7301607cad 100644
--- a/src/plugins/clangcodemodel/test/clangcodecompletion_test.cpp
+++ b/src/plugins/clangcodemodel/test/clangcodecompletion_test.cpp
@@ -432,13 +432,13 @@ public:
     QString senderLog;
 };
 
-const CppTools::ProjectPart::HeaderPaths toHeaderPaths(const QStringList &paths)
+const CppTools::ProjectPartHeaderPaths toHeaderPaths(const QStringList &paths)
 {
     using namespace CppTools;
 
-    ProjectPart::HeaderPaths result;
+    ProjectPartHeaderPaths result;
     foreach (const QString &path, paths)
-        result << ProjectPart::HeaderPath(path, ProjectPart::HeaderPath::IncludePath);
+        result << ProjectPartHeaderPath(path, ProjectPartHeaderPath::IncludePath);
     return result;
 }
 
diff --git a/src/plugins/cppeditor/cppquickfix_test.cpp b/src/plugins/cppeditor/cppquickfix_test.cpp
index c914f2a48b..d9d524e460 100644
--- a/src/plugins/cppeditor/cppquickfix_test.cpp
+++ b/src/plugins/cppeditor/cppquickfix_test.cpp
@@ -109,7 +109,7 @@ QList<QuickFixTestDocument::Ptr> singleDocument(const QByteArray &original,
 }
 
 BaseQuickFixTestCase::BaseQuickFixTestCase(const QList<QuickFixTestDocument::Ptr> &testDocuments,
-                                           const ProjectPart::HeaderPaths &headerPaths)
+                                           const ProjectPartHeaderPaths &headerPaths)
     : m_testDocuments(testDocuments)
     , m_cppCodeStylePreferences(0)
     , m_restoreHeaderPaths(false)
@@ -229,7 +229,7 @@ static QString &removeTrailingWhitespace(QString &input)
 
 QuickFixOperationTest::QuickFixOperationTest(const QList<QuickFixTestDocument::Ptr> &testDocuments,
                                              CppQuickFixFactory *factory,
-                                             const ProjectPart::HeaderPaths &headerPaths,
+                                             const ProjectPartHeaderPaths &headerPaths,
                                              int operationIndex,
                                              const QByteArray &expectedFailMessage)
     : BaseQuickFixTestCase(testDocuments, headerPaths)
@@ -272,15 +272,15 @@ void QuickFixOperationTest::run(const QList<QuickFixTestDocument::Ptr> &testDocu
                                 const QString &headerPath,
                                 int operationIndex)
 {
-    ProjectPart::HeaderPaths headerPaths;
-    headerPaths += ProjectPart::HeaderPath(headerPath, ProjectPart::HeaderPath::IncludePath);
+    ProjectPartHeaderPaths headerPaths;
+    headerPaths += ProjectPartHeaderPath(headerPath, ProjectPartHeaderPath::IncludePath);
     QuickFixOperationTest(testDocuments, factory, headerPaths, operationIndex);
 }
 
 QuickFixOfferedOperationsTest::QuickFixOfferedOperationsTest(
         const QList<QuickFixTestDocument::Ptr> &testDocuments,
         CppQuickFixFactory *factory,
-        const ProjectPart::HeaderPaths &headerPaths,
+        const ProjectPartHeaderPaths &headerPaths,
         const QStringList &expectedOperations)
     : BaseQuickFixTestCase(testDocuments, headerPaths)
 {
@@ -1857,7 +1857,7 @@ void CppEditorPlugin::test_quickfix_GenerateGetterSetter_onlyGetter()
     testDocuments << QuickFixTestDocument::create("file.cpp", original, expected);
 
     GenerateGetterSetter factory;
-    QuickFixOperationTest(testDocuments, &factory, ProjectPart::HeaderPaths(), 1);
+    QuickFixOperationTest(testDocuments, &factory, ProjectPartHeaderPaths(), 1);
 }
 
 /// Checks: Only generate setter
@@ -1894,7 +1894,7 @@ void CppEditorPlugin::test_quickfix_GenerateGetterSetter_onlySetter()
     testDocuments << QuickFixTestDocument::create("file.cpp", original, expected);
 
     GenerateGetterSetter factory;
-    QuickFixOperationTest(testDocuments, &factory, ProjectPart::HeaderPaths(), 2);
+    QuickFixOperationTest(testDocuments, &factory, ProjectPartHeaderPaths(), 2);
 }
 
 /// Checks: Offer a "generate getter" quick fix if there is a setter
@@ -2015,7 +2015,7 @@ void CppEditorPlugin::test_quickfix_InsertDefFromDecl_afterClass()
     testDocuments << QuickFixTestDocument::create("file.cpp", original, expected);
 
     InsertDefFromDecl factory;
-    QuickFixOperationTest(testDocuments, &factory, ProjectPart::HeaderPaths(), 1);
+    QuickFixOperationTest(testDocuments, &factory, ProjectPartHeaderPaths(), 1);
 }
 
 /// Check from header file: If there is a source file, insert the definition in the source file.
@@ -2201,7 +2201,7 @@ void CppEditorPlugin::test_quickfix_InsertDefFromDecl_insideClass()
         "};";
 
     InsertDefFromDecl factory;
-    QuickFixOperationTest(singleDocument(original, expected), &factory, ProjectPart::HeaderPaths(),
+    QuickFixOperationTest(singleDocument(original, expected), &factory, ProjectPartHeaderPaths(),
                           1);
 }
 
@@ -2215,7 +2215,7 @@ void CppEditorPlugin::test_quickfix_InsertDefFromDecl_notTriggeringWhenDefinitio
             "void Foo::bar() {}\n";
 
     InsertDefFromDecl factory;
-    QuickFixOperationTest(singleDocument(original, ""), &factory, ProjectPart::HeaderPaths(), 1);
+    QuickFixOperationTest(singleDocument(original, ""), &factory, ProjectPartHeaderPaths(), 1);
 }
 
 /// Find right implementation file.
@@ -2629,7 +2629,7 @@ void insertToSectionDeclFromDef(const QByteArray &section, int sectionIndex)
     testDocuments << QuickFixTestDocument::create("file.cpp", original, expected);
 
     InsertDeclFromDef factory;
-    QuickFixOperationTest(testDocuments, &factory, ProjectPart::HeaderPaths(), sectionIndex);
+    QuickFixOperationTest(testDocuments, &factory, ProjectPartHeaderPaths(), sectionIndex);
 }
 
 /// Check from source file: Insert in header file.
@@ -3391,9 +3391,9 @@ void CppEditorPlugin::test_quickfix_AddIncludeForUndefinedIdentifier_noDoubleQtH
     original = expected = "@QDir dir;\n";
     testDocuments << QuickFixTestDocument::create(base + "/fileWantsToUseQDir.cpp", original, expected);
 
-    ProjectPart::HeaderPaths headerPaths;
-    headerPaths += ProjectPart::HeaderPath(TestIncludePaths::globalQtCoreIncludePath(),
-                                           ProjectPart::HeaderPath::IncludePath);
+    ProjectPartHeaderPaths headerPaths;
+    headerPaths += ProjectPartHeaderPath(TestIncludePaths::globalQtCoreIncludePath(),
+                                         ProjectPartHeaderPath::IncludePath);
 
     AddIncludeForUndefinedIdentifier factory;
     const QStringList expectedOperations = QStringList() << QLatin1String("Add #include <QDir>");
@@ -3561,7 +3561,7 @@ void CppEditorPlugin::test_quickfix_MoveFuncDefOutside_MemberFuncOutside2()
     testDocuments << QuickFixTestDocument::create("file.cpp", original, expected);
 
     MoveFuncDefOutside factory;
-    QuickFixOperationTest(testDocuments, &factory, ProjectPart::HeaderPaths(), 1);
+    QuickFixOperationTest(testDocuments, &factory, ProjectPartHeaderPaths(), 1);
 }
 
 /// Check: Move definition from header to cpp (with namespace).
@@ -3868,7 +3868,7 @@ void CppEditorPlugin::test_quickfix_MoveFuncDefOutside_afterClass()
     testDocuments << QuickFixTestDocument::create("file.cpp", original, expected);
 
     MoveFuncDefOutside factory;
-    QuickFixOperationTest(testDocuments, &factory, ProjectPart::HeaderPaths(), 1);
+    QuickFixOperationTest(testDocuments, &factory, ProjectPartHeaderPaths(), 1);
 }
 
 /// Check if whitespace is respected for operator functions
@@ -3943,7 +3943,7 @@ void CppEditorPlugin::test_quickfix_MoveFuncDefOutside_macroUses()
 
     MoveFuncDefOutside factory;
     QuickFixOperationTest(singleDocument(original, expected), &factory,
-                     ProjectPart::HeaderPaths(), 0, "QTCREATORBUG-12314");
+                          ProjectPartHeaderPaths(), 0, "QTCREATORBUG-12314");
 }
 
 /// Check: revert test_quickfix_MoveFuncDefOutside_MemberFuncToCpp()
@@ -4277,7 +4277,7 @@ void CppEditorPlugin::test_quickfix_MoveFuncDefToDecl_macroUses()
 
     MoveFuncDefToDecl factory;
     QuickFixOperationTest(singleDocument(original, expected), &factory,
-                     ProjectPart::HeaderPaths(), 0, "QTCREATORBUG-12314");
+                          ProjectPartHeaderPaths(), 0, "QTCREATORBUG-12314");
 }
 
 void CppEditorPlugin::test_quickfix_MoveFuncDefToDecl_override()
diff --git a/src/plugins/cppeditor/cppquickfix_test.h b/src/plugins/cppeditor/cppquickfix_test.h
index 14c3d415d0..24bf540836 100644
--- a/src/plugins/cppeditor/cppquickfix_test.h
+++ b/src/plugins/cppeditor/cppquickfix_test.h
@@ -81,8 +81,8 @@ public:
     /// Exactly one QuickFixTestDocument must contain the cursor position marker '@'
     /// or "@{start}" and "@{end}"
     BaseQuickFixTestCase(const QList<QuickFixTestDocument::Ptr> &testDocuments,
-                         const CppTools::ProjectPart::HeaderPaths &headerPaths
-                            = CppTools::ProjectPart::HeaderPaths());
+                         const CppTools::ProjectPartHeaderPaths &headerPaths
+                            = CppTools::ProjectPartHeaderPaths());
 
     ~BaseQuickFixTestCase();
 
@@ -96,7 +96,7 @@ private:
     CppTools::CppCodeStylePreferences *m_cppCodeStylePreferences;
     QByteArray m_cppCodeStylePreferencesOriginalDelegateId;
 
-    CppTools::ProjectPart::HeaderPaths m_headerPathsToRestore;
+    CppTools::ProjectPartHeaderPaths m_headerPathsToRestore;
     bool m_restoreHeaderPaths;
 };
 
@@ -106,8 +106,8 @@ class QuickFixOperationTest : public BaseQuickFixTestCase
 public:
     QuickFixOperationTest(const QList<QuickFixTestDocument::Ptr> &testDocuments,
                           CppQuickFixFactory *factory,
-                          const CppTools::ProjectPart::HeaderPaths &headerPaths
-                            = CppTools::ProjectPart::HeaderPaths(),
+                          const CppTools::ProjectPartHeaderPaths &headerPaths
+                            = CppTools::ProjectPartHeaderPaths(),
                           int operationIndex = 0,
                           const QByteArray &expectedFailMessage = QByteArray());
 
@@ -123,8 +123,8 @@ class QuickFixOfferedOperationsTest : public BaseQuickFixTestCase
 public:
     QuickFixOfferedOperationsTest(const QList<QuickFixTestDocument::Ptr> &testDocuments,
                                   CppQuickFixFactory *factory,
-                                  const CppTools::ProjectPart::HeaderPaths &headerPaths
-                                    = CppTools::ProjectPart::HeaderPaths(),
+                                  const CppTools::ProjectPartHeaderPaths &headerPaths
+                                    = CppTools::ProjectPartHeaderPaths(),
                                   const QStringList &expectedOperations = QStringList());
 };
 
diff --git a/src/plugins/cppeditor/cppquickfixes.cpp b/src/plugins/cppeditor/cppquickfixes.cpp
index 7e23cddadf..6d85729613 100644
--- a/src/plugins/cppeditor/cppquickfixes.cpp
+++ b/src/plugins/cppeditor/cppquickfixes.cpp
@@ -1751,7 +1751,7 @@ namespace {
 
 QString findShortestInclude(const QString currentDocumentFilePath,
                             const QString candidateFilePath,
-                            const ProjectPart::HeaderPaths &headerPaths)
+                            const ProjectPartHeaderPaths &headerPaths)
 {
     QString result;
 
@@ -1760,7 +1760,7 @@ QString findShortestInclude(const QString currentDocumentFilePath,
     if (fileInfo.path() == QFileInfo(currentDocumentFilePath).path()) {
         result = QLatin1Char('"') + fileInfo.fileName() + QLatin1Char('"');
     } else {
-        foreach (const ProjectPart::HeaderPath &headerPath, headerPaths) {
+        foreach (const ProjectPartHeaderPath &headerPath, headerPaths) {
             if (!candidateFilePath.startsWith(headerPath.path))
                 continue;
             QString relativePath = candidateFilePath.mid(headerPath.path.size());
@@ -1775,12 +1775,12 @@ QString findShortestInclude(const QString currentDocumentFilePath,
 }
 
 QString findQtIncludeWithSameName(const QString &className,
-                                  const ProjectPart::HeaderPaths &headerPaths)
+                                  const ProjectPartHeaderPaths &headerPaths)
 {
     QString result;
 
     // Check for a header file with the same name in the Qt include paths
-    foreach (const ProjectPart::HeaderPath &headerPath, headerPaths) {
+    foreach (const ProjectPartHeaderPath &headerPath, headerPaths) {
         if (!headerPath.path.contains(QLatin1String("/Qt"))) // "QtCore", "QtGui" etc...
             continue;
 
@@ -1795,9 +1795,9 @@ QString findQtIncludeWithSameName(const QString &className,
     return result;
 }
 
-ProjectPart::HeaderPaths relevantHeaderPaths(const QString &filePath)
+ProjectPartHeaderPaths relevantHeaderPaths(const QString &filePath)
 {
-    ProjectPart::HeaderPaths headerPaths;
+    ProjectPartHeaderPaths headerPaths;
 
     CppModelManager *modelManager = CppModelManager::instance();
     const QList<ProjectPart::Ptr> projectParts = modelManager->projectPart(filePath);
@@ -1924,7 +1924,7 @@ void AddIncludeForUndefinedIdentifier::match(const CppQuickFixInterface &interfa
         return;
 
     const QString currentDocumentFilePath = interface.semanticInfo().doc->fileName();
-    const ProjectPart::HeaderPaths headerPaths = relevantHeaderPaths(currentDocumentFilePath);
+    const ProjectPartHeaderPaths headerPaths = relevantHeaderPaths(currentDocumentFilePath);
     bool qtHeaderFileIncludeOffered = false;
 
     // Find an include file through the locator
diff --git a/src/plugins/cpptools/builtineditordocumentparser.cpp b/src/plugins/cpptools/builtineditordocumentparser.cpp
index 8d02d7c01f..46ffec38c3 100644
--- a/src/plugins/cpptools/builtineditordocumentparser.cpp
+++ b/src/plugins/cpptools/builtineditordocumentparser.cpp
@@ -76,7 +76,7 @@ void BuiltinEditorDocumentParser::updateHelper(const WorkingCopy &theWorkingCopy
 
     CppModelManager *modelManager = CppModelManager::instance();
     QByteArray configFile = modelManager->codeModelConfiguration();
-    ProjectPart::HeaderPaths headerPaths;
+    ProjectPartHeaderPaths headerPaths;
     QStringList precompiledHeaders;
     QString projectConfigFile;
     LanguageFeatures features = LanguageFeatures::defaultFeatures();
@@ -238,7 +238,7 @@ Snapshot BuiltinEditorDocumentParser::snapshot() const
     return extraState().snapshot;
 }
 
-ProjectPart::HeaderPaths BuiltinEditorDocumentParser::headerPaths() const
+ProjectPartHeaderPaths BuiltinEditorDocumentParser::headerPaths() const
 {
     return extraState().headerPaths;
 }
diff --git a/src/plugins/cpptools/builtineditordocumentparser.h b/src/plugins/cpptools/builtineditordocumentparser.h
index 93f3c2bad6..15eaef5407 100644
--- a/src/plugins/cpptools/builtineditordocumentparser.h
+++ b/src/plugins/cpptools/builtineditordocumentparser.h
@@ -52,7 +52,7 @@ public:
 
     CPlusPlus::Document::Ptr document() const;
     CPlusPlus::Snapshot snapshot() const;
-    ProjectPart::HeaderPaths headerPaths() const;
+    ProjectPartHeaderPaths headerPaths() const;
 
     void releaseResources();
 
@@ -72,7 +72,7 @@ private:
     struct ExtraState {
         QByteArray configFile;
 
-        ProjectPart::HeaderPaths headerPaths;
+        ProjectPartHeaderPaths headerPaths;
         QString projectConfigFile;
         QStringList precompiledHeaders;
 
diff --git a/src/plugins/cpptools/builtinindexingsupport.cpp b/src/plugins/cpptools/builtinindexingsupport.cpp
index a5713b6da8..78946f94d4 100644
--- a/src/plugins/cpptools/builtinindexingsupport.cpp
+++ b/src/plugins/cpptools/builtinindexingsupport.cpp
@@ -61,7 +61,7 @@ namespace {
 class ParseParams
 {
 public:
-    ProjectPart::HeaderPaths headerPaths;
+    ProjectPartHeaderPaths headerPaths;
     WorkingCopy workingCopy;
     QSet<QString> sourceFiles;
 };
@@ -203,7 +203,7 @@ void index(QFutureInterface<void> &future, const ParseParams params)
     bool processingHeaders = false;
 
     CppModelManager *cmm = CppModelManager::instance();
-    const ProjectPart::HeaderPaths fallbackHeaderPaths = cmm->headerPaths();
+    const ProjectPartHeaderPaths fallbackHeaderPaths = cmm->headerPaths();
     const CPlusPlus::LanguageFeatures defaultFeatures =
             CPlusPlus::LanguageFeatures::defaultFeatures();
     for (int i = 0; i < files.size(); ++i) {
@@ -229,7 +229,7 @@ void index(QFutureInterface<void> &future, const ParseParams params)
             processingHeaders = true;
         }
 
-        ProjectPart::HeaderPaths headerPaths = parts.isEmpty()
+        ProjectPartHeaderPaths headerPaths = parts.isEmpty()
                 ? fallbackHeaderPaths
                 : parts.first()->headerPaths;
         sourceProcessor->setHeaderPaths(headerPaths);
diff --git a/src/plugins/cpptools/cppcodemodelinspectordumper.cpp b/src/plugins/cpptools/cppcodemodelinspectordumper.cpp
index 1285c40da3..2282907120 100644
--- a/src/plugins/cpptools/cppcodemodelinspectordumper.cpp
+++ b/src/plugins/cpptools/cppcodemodelinspectordumper.cpp
@@ -143,7 +143,7 @@ QString Utils::toString(ProjectPart::QtVersion qtVersion)
     return QString();
 }
 
-QString Utils::toString(const QList<ProjectFile> &projectFiles)
+QString Utils::toString(const QVector<ProjectFile> &projectFiles)
 {
     QStringList filesList;
     foreach (const ProjectFile &projectFile, projectFiles)
@@ -411,10 +411,10 @@ QString Utils::pathListToString(const QStringList &pathList)
     return result.join(QLatin1Char('\n'));
 }
 
-QString Utils::pathListToString(const ProjectPart::HeaderPaths &pathList)
+QString Utils::pathListToString(const ProjectPartHeaderPaths &pathList)
 {
     QStringList result;
-    foreach (const ProjectPart::HeaderPath &path, pathList) {
+    foreach (const ProjectPartHeaderPath &path, pathList) {
         result << QString(QLatin1String("%1 (%2 path)")).arg(
                       QDir::toNativeSeparators(path.path),
                       path.isFrameworkPath() ? QLatin1String("framework") : QLatin1String("include")
@@ -523,9 +523,9 @@ void Dumper::dumpProjectInfos( const QList<ProjectInfo> &projectInfos)
 
             if (!part->headerPaths.isEmpty()) {
                 m_out << i3 << "Header Paths:{{{4\n";
-                foreach (const ProjectPart::HeaderPath &headerPath, part->headerPaths)
+                foreach (const ProjectPartHeaderPath &headerPath, part->headerPaths)
                     m_out << i4 << headerPath.path
-                          << (headerPath.type == ProjectPart::HeaderPath::IncludePath
+                          << (headerPath.type == ProjectPartHeaderPath::IncludePath
                               ? "(include path)"
                               : "(framework path)")
                           << "\n";
@@ -590,7 +590,7 @@ void Dumper::dumpWorkingCopy(const WorkingCopy &workingCopy)
     }
 }
 
-void Dumper::dumpMergedEntities(const ProjectPart::HeaderPaths &mergedHeaderPaths,
+void Dumper::dumpMergedEntities(const ProjectPartHeaderPaths &mergedHeaderPaths,
                                 const QByteArray &mergedMacros)
 {
     m_out << "Merged Entities{{{1\n";
@@ -598,7 +598,7 @@ void Dumper::dumpMergedEntities(const ProjectPart::HeaderPaths &mergedHeaderPath
     const QByteArray i3 = indent(3);
 
     m_out << i2 << "Merged Header Paths{{{2\n";
-    foreach (const ProjectPart::HeaderPath &hp, mergedHeaderPaths)
+    foreach (const ProjectPartHeaderPath &hp, mergedHeaderPaths)
         m_out << i3 << hp.path
               << (hp.isFrameworkPath() ? " (framework path)" : " (include path)")
               << "\n";
diff --git a/src/plugins/cpptools/cppcodemodelinspectordumper.h b/src/plugins/cpptools/cppcodemodelinspectordumper.h
index 5257a404a9..79b342a512 100644
--- a/src/plugins/cpptools/cppcodemodelinspectordumper.h
+++ b/src/plugins/cpptools/cppcodemodelinspectordumper.h
@@ -54,13 +54,13 @@ struct CPPTOOLS_EXPORT Utils
     static QString toString(CppTools::ProjectPart::LanguageVersion languageVersion);
     static QString toString(CppTools::ProjectPart::LanguageExtensions languageExtension);
     static QString toString(CppTools::ProjectPart::QtVersion qtVersion);
-    static QString toString(const QList<CppTools::ProjectFile> &projectFiles);
+    static QString toString(const QVector<CppTools::ProjectFile> &projectFiles);
     static QString toString(CppTools::ProjectFile::Kind kind);
     static QString toString(CPlusPlus::Kind kind);
     static QString partsForFile(const QString &fileName);
     static QString unresolvedFileNameWithDelimiters(const CPlusPlus::Document::Include &include);
     static QString pathListToString(const QStringList &pathList);
-    static QString pathListToString(const ProjectPart::HeaderPaths &pathList);
+    static QString pathListToString(const ProjectPartHeaderPaths &pathList);
     static QList<CPlusPlus::Document::Ptr> snapshotToList(const CPlusPlus::Snapshot &snapshot);
 };
 
@@ -76,7 +76,7 @@ public:
                       const QString &title,
                       bool isGlobalSnapshot = false);
     void dumpWorkingCopy(const CppTools::WorkingCopy &workingCopy);
-    void dumpMergedEntities(const ProjectPart::HeaderPaths &mergedHeaderPaths,
+    void dumpMergedEntities(const ProjectPartHeaderPaths &mergedHeaderPaths,
                             const QByteArray &mergedMacros);
 
 private:
diff --git a/src/plugins/cpptools/cppcompletion_test.cpp b/src/plugins/cpptools/cppcompletion_test.cpp
index 7deb309f58..4ffc55b4f3 100644
--- a/src/plugins/cpptools/cppcompletion_test.cpp
+++ b/src/plugins/cpptools/cppcompletion_test.cpp
@@ -113,7 +113,7 @@ public:
             = new CppCompletionAssistInterface(m_editorWidget->textDocument()->filePath().toString(),
                                                m_textDocument, m_position,
                                                ExplicitlyInvoked, m_snapshot,
-                                               ProjectPart::HeaderPaths(),
+                                               ProjectPartHeaderPaths(),
                                                languageFeatures);
         InternalCppCompletionAssistProcessor processor;
 
diff --git a/src/plugins/cpptools/cppcompletionassist.cpp b/src/plugins/cpptools/cppcompletionassist.cpp
index 21f9f8f4fd..8570e0c356 100644
--- a/src/plugins/cpptools/cppcompletionassist.cpp
+++ b/src/plugins/cpptools/cppcompletionassist.cpp
@@ -1339,16 +1339,16 @@ bool InternalCppCompletionAssistProcessor::completeInclude(const QTextCursor &cu
     }
 
     // Make completion for all relevant includes
-    ProjectPart::HeaderPaths headerPaths = m_interface->headerPaths();
-    const ProjectPart::HeaderPath currentFilePath(QFileInfo(m_interface->fileName()).path(),
-                                                   ProjectPart::HeaderPath::IncludePath);
+    ProjectPartHeaderPaths headerPaths = m_interface->headerPaths();
+    const ProjectPartHeaderPath currentFilePath(QFileInfo(m_interface->fileName()).path(),
+                                                ProjectPartHeaderPath::IncludePath);
     if (!headerPaths.contains(currentFilePath))
         headerPaths.append(currentFilePath);
 
     Utils::MimeDatabase mdb;
     const QStringList suffixes = mdb.mimeTypeForName(QLatin1String("text/x-c++hdr")).suffixes();
 
-    foreach (const ProjectPart::HeaderPath &headerPath, headerPaths) {
+    foreach (const ProjectPartHeaderPath &headerPath, headerPaths) {
         QString realPath = headerPath.path;
         if (!directoryPrefix.isEmpty()) {
             realPath += QLatin1Char('/');
diff --git a/src/plugins/cpptools/cppcompletionassist.h b/src/plugins/cpptools/cppcompletionassist.h
index 30f8809081..a88ce4d42a 100644
--- a/src/plugins/cpptools/cppcompletionassist.h
+++ b/src/plugins/cpptools/cppcompletionassist.h
@@ -189,7 +189,7 @@ public:
                                  int position,
                                  TextEditor::AssistReason reason,
                                  const CPlusPlus::Snapshot &snapshot,
-                                 const ProjectPart::HeaderPaths &headerPaths,
+                                 const ProjectPartHeaderPaths &headerPaths,
                                  const CPlusPlus::LanguageFeatures &features)
         : TextEditor::AssistInterface(textDocument, position, filePath, reason)
         , m_gotCppSpecifics(true)
@@ -199,7 +199,7 @@ public:
     {}
 
     const CPlusPlus::Snapshot &snapshot() const { getCppSpecifics(); return m_snapshot; }
-    const ProjectPart::HeaderPaths &headerPaths() const
+    const ProjectPartHeaderPaths &headerPaths() const
     { getCppSpecifics(); return m_headerPaths; }
     CPlusPlus::LanguageFeatures languageFeatures() const
     { getCppSpecifics(); return m_languageFeatures; }
@@ -211,7 +211,7 @@ private:
     mutable bool m_gotCppSpecifics;
     WorkingCopy m_workingCopy;
     mutable CPlusPlus::Snapshot m_snapshot;
-    mutable ProjectPart::HeaderPaths m_headerPaths;
+    mutable ProjectPartHeaderPaths m_headerPaths;
     mutable CPlusPlus::LanguageFeatures m_languageFeatures;
 };
 
diff --git a/src/plugins/cpptools/cppmodelmanager.cpp b/src/plugins/cpptools/cppmodelmanager.cpp
index c6c92719de..127437cb2f 100644
--- a/src/plugins/cpptools/cppmodelmanager.cpp
+++ b/src/plugins/cpptools/cppmodelmanager.cpp
@@ -142,7 +142,7 @@ public:
     // The members below are cached/(re)calculated from the projects and/or their project parts
     bool m_dirty;
     QStringList m_projectFiles;
-    ProjectPart::HeaderPaths m_headerPaths;
+    ProjectPartHeaderPaths m_headerPaths;
     QByteArray m_definedMacros;
 
     // Editor integration
@@ -412,16 +412,16 @@ QStringList CppModelManager::internalProjectFiles() const
     return files;
 }
 
-ProjectPart::HeaderPaths CppModelManager::internalHeaderPaths() const
+ProjectPartHeaderPaths CppModelManager::internalHeaderPaths() const
 {
-    ProjectPart::HeaderPaths headerPaths;
+    ProjectPartHeaderPaths headerPaths;
     QMapIterator<ProjectExplorer::Project *, ProjectInfo> it(d->m_projectToProjectsInfo);
     while (it.hasNext()) {
         it.next();
         const ProjectInfo pinfo = it.value();
         foreach (const ProjectPart::Ptr &part, pinfo.projectParts()) {
-            foreach (const ProjectPart::HeaderPath &path, part->headerPaths) {
-                const ProjectPart::HeaderPath hp(QDir::cleanPath(path.path), path.type);
+            foreach (const ProjectPartHeaderPath &path, part->headerPaths) {
+                const ProjectPartHeaderPath hp(QDir::cleanPath(path.path), path.type);
                 if (!headerPaths.contains(hp))
                     headerPaths += hp;
             }
@@ -1168,7 +1168,7 @@ QStringList CppModelManager::projectFiles()
     return d->m_projectFiles;
 }
 
-ProjectPart::HeaderPaths CppModelManager::headerPaths()
+ProjectPartHeaderPaths CppModelManager::headerPaths()
 {
     QMutexLocker locker(&d->m_projectMutex);
     ensureUpdated();
@@ -1176,7 +1176,7 @@ ProjectPart::HeaderPaths CppModelManager::headerPaths()
     return d->m_headerPaths;
 }
 
-void CppModelManager::setHeaderPaths(const ProjectPart::HeaderPaths &headerPaths)
+void CppModelManager::setHeaderPaths(const ProjectPartHeaderPaths &headerPaths)
 {
     QMutexLocker locker(&d->m_projectMutex);
     d->m_headerPaths = headerPaths;
diff --git a/src/plugins/cpptools/cppmodelmanager.h b/src/plugins/cpptools/cppmodelmanager.h
index 2fbab066b2..84bf1c869f 100644
--- a/src/plugins/cpptools/cppmodelmanager.h
+++ b/src/plugins/cpptools/cppmodelmanager.h
@@ -154,10 +154,10 @@ public:
 
     QStringList projectFiles();
 
-    ProjectPart::HeaderPaths headerPaths();
+    ProjectPartHeaderPaths headerPaths();
 
     // Use this *only* for auto tests
-    void setHeaderPaths(const ProjectPart::HeaderPaths &headerPaths);
+    void setHeaderPaths(const ProjectPartHeaderPaths &headerPaths);
 
     QByteArray definedMacros();
 
@@ -217,7 +217,7 @@ private:
 
     void ensureUpdated();
     QStringList internalProjectFiles() const;
-    ProjectPart::HeaderPaths internalHeaderPaths() const;
+    ProjectPartHeaderPaths internalHeaderPaths() const;
     QByteArray internalDefinedMacros() const;
 
     void dumpModelManagerConfiguration(const QString &logFileId);
diff --git a/src/plugins/cpptools/cppmodelmanager_test.cpp b/src/plugins/cpptools/cppmodelmanager_test.cpp
index acbfb0ba90..e07b7b8c84 100644
--- a/src/plugins/cpptools/cppmodelmanager_test.cpp
+++ b/src/plugins/cpptools/cppmodelmanager_test.cpp
@@ -61,7 +61,7 @@ using namespace ProjectExplorer;
 
 typedef CPlusPlus::Document Document;
 
-Q_DECLARE_METATYPE(QList<ProjectFile>)
+Q_DECLARE_METATYPE(QVector<ProjectFile>)
 
 namespace {
 
@@ -189,21 +189,20 @@ void CppToolsPlugin::test_modelmanager_paths_are_clean()
     Project *project = helper.createProject(_("test_modelmanager_paths_are_clean"));
     ProjectInfo pi = ProjectInfo(project);
 
-    typedef ProjectPart::HeaderPath HeaderPath;
+    typedef ProjectPartHeaderPath HeaderPath;
 
     ProjectPart::Ptr part(new ProjectPart);
     part->languageVersion = ProjectPart::CXX14;
     part->qtVersion = ProjectPart::Qt5;
     part->projectDefines = QByteArray("#define OH_BEHAVE -1\n");
-    part->headerPaths = QList<HeaderPath>()
-            << HeaderPath(testDataDir.includeDir(false), HeaderPath::IncludePath)
-            << HeaderPath(testDataDir.frameworksDir(false), HeaderPath::FrameworkPath);
+    part->headerPaths = { HeaderPath(testDataDir.includeDir(false), HeaderPath::IncludePath),
+                          HeaderPath(testDataDir.frameworksDir(false), HeaderPath::FrameworkPath) };
     pi.appendProjectPart(part);
     pi.finish();
 
     mm->updateProjectInfo(pi);
 
-    QList<HeaderPath> headerPaths = mm->headerPaths();
+    ProjectPartHeaderPaths headerPaths = mm->headerPaths();
     QCOMPARE(headerPaths.size(), 2);
     QVERIFY(headerPaths.contains(HeaderPath(testDataDir.includeDir(), HeaderPath::IncludePath)));
     QVERIFY(headerPaths.contains(HeaderPath(testDataDir.frameworksDir(),
@@ -224,15 +223,14 @@ void CppToolsPlugin::test_modelmanager_framework_headers()
     Project *project = helper.createProject(_("test_modelmanager_framework_headers"));
     ProjectInfo pi = ProjectInfo(project);
 
-    typedef ProjectPart::HeaderPath HeaderPath;
+    typedef ProjectPartHeaderPath HeaderPath;
 
     ProjectPart::Ptr part(new ProjectPart);
     part->languageVersion = ProjectPart::CXX14;
     part->qtVersion = ProjectPart::Qt5;
     part->projectDefines = QByteArray("#define OH_BEHAVE -1\n");
-    part->headerPaths = QList<HeaderPath>()
-            << HeaderPath(testDataDir.includeDir(false), HeaderPath::IncludePath)
-            << HeaderPath(testDataDir.frameworksDir(false), HeaderPath::FrameworkPath);
+    part->headerPaths = { HeaderPath(testDataDir.includeDir(false), HeaderPath::IncludePath),
+                          HeaderPath(testDataDir.frameworksDir(false), HeaderPath::FrameworkPath) };
     const QString &source = testDataDir.fileFromSourcesDir(
         _("test_modelmanager_framework_headers.cpp"));
     part->files << ProjectFile(source, ProjectFile::CXXSource);
@@ -276,14 +274,13 @@ void CppToolsPlugin::test_modelmanager_refresh_also_includes_of_project_files()
                 _("test_modelmanager_refresh_also_includes_of_project_files"));
     ProjectInfo pi = ProjectInfo(project);
 
-    typedef ProjectPart::HeaderPath HeaderPath;
+    typedef ProjectPartHeaderPath HeaderPath;
 
     ProjectPart::Ptr part(new ProjectPart);
     part->languageVersion = ProjectPart::CXX14;
     part->qtVersion = ProjectPart::Qt5;
     part->projectDefines = QByteArray("#define OH_BEHAVE -1\n");
-    part->headerPaths = QList<HeaderPath>()
-            << HeaderPath(testDataDir.includeDir(false), HeaderPath::IncludePath);
+    part->headerPaths = { HeaderPath(testDataDir.includeDir(false), HeaderPath::IncludePath) };
     part->files.append(ProjectFile(testCpp, ProjectFile::CXXSource));
     pi.appendProjectPart(part);
     pi.finish();
@@ -788,7 +785,7 @@ void CppToolsPlugin::test_modelmanager_defines_per_project()
 
     Project *project = helper.createProject(_("test_modelmanager_defines_per_project"));
 
-    typedef ProjectPart::HeaderPath HeaderPath;
+    typedef ProjectPartHeaderPath HeaderPath;
 
     ProjectPart::Ptr part1(new ProjectPart);
     part1->projectFile = QLatin1String("project1.projectfile");
@@ -797,8 +794,7 @@ void CppToolsPlugin::test_modelmanager_defines_per_project()
     part1->languageVersion = ProjectPart::CXX11;
     part1->qtVersion = ProjectPart::NoQt;
     part1->projectDefines = QByteArray("#define SUB1\n");
-    part1->headerPaths = QList<HeaderPath>()
-            << HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath);
+    part1->headerPaths = { HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath) };
 
     ProjectPart::Ptr part2(new ProjectPart);
     part2->projectFile = QLatin1String("project1.projectfile");
@@ -807,8 +803,7 @@ void CppToolsPlugin::test_modelmanager_defines_per_project()
     part2->languageVersion = ProjectPart::CXX11;
     part2->qtVersion = ProjectPart::NoQt;
     part2->projectDefines = QByteArray("#define SUB2\n");
-    part2->headerPaths = QList<HeaderPath>()
-            << HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath);
+    part2->headerPaths = { HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath) };
 
     ProjectInfo pi = ProjectInfo(project);
     pi.appendProjectPart(part1);
@@ -859,7 +854,7 @@ void CppToolsPlugin::test_modelmanager_precompiled_headers()
 
     Project *project = helper.createProject(_("test_modelmanager_defines_per_project_pch"));
 
-    typedef ProjectPart::HeaderPath HeaderPath;
+    typedef ProjectPartHeaderPath HeaderPath;
 
     ProjectPart::Ptr part1(new ProjectPart);
     part1->projectFile = QLatin1String("project1.projectfile");
@@ -868,8 +863,7 @@ void CppToolsPlugin::test_modelmanager_precompiled_headers()
     part1->languageVersion = ProjectPart::CXX11;
     part1->qtVersion = ProjectPart::NoQt;
     part1->precompiledHeaders.append(pch1File);
-    part1->headerPaths = QList<HeaderPath>()
-            << HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath);
+    part1->headerPaths = { HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath) };
 
     ProjectPart::Ptr part2(new ProjectPart);
     part2->projectFile = QLatin1String("project2.projectfile");
@@ -878,8 +872,7 @@ void CppToolsPlugin::test_modelmanager_precompiled_headers()
     part2->languageVersion = ProjectPart::CXX11;
     part2->qtVersion = ProjectPart::NoQt;
     part2->precompiledHeaders.append(pch2File);
-    part2->headerPaths = QList<HeaderPath>()
-            << HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath);
+    part2->headerPaths = { HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath) };
 
     ProjectInfo pi = ProjectInfo(project);
     pi.appendProjectPart(part1);
@@ -947,23 +940,21 @@ void CppToolsPlugin::test_modelmanager_defines_per_editor()
 
     Project *project = helper.createProject(_("test_modelmanager_defines_per_editor"));
 
-    typedef ProjectPart::HeaderPath HeaderPath;
+    typedef ProjectPartHeaderPath HeaderPath;
 
     ProjectPart::Ptr part1(new ProjectPart);
     part1->files.append(ProjectFile(main1File, ProjectFile::CXXSource));
     part1->files.append(ProjectFile(header, ProjectFile::CXXHeader));
     part1->languageVersion = ProjectPart::CXX11;
     part1->qtVersion = ProjectPart::NoQt;
-    part1->headerPaths = QList<HeaderPath>()
-            << HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath);
+    part1->headerPaths = { HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath) };
 
     ProjectPart::Ptr part2(new ProjectPart);
     part2->files.append(ProjectFile(main2File, ProjectFile::CXXSource));
     part2->files.append(ProjectFile(header, ProjectFile::CXXHeader));
     part2->languageVersion = ProjectPart::CXX11;
     part2->qtVersion = ProjectPart::NoQt;
-    part2->headerPaths = QList<HeaderPath>()
-            << HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath);
+    part2->headerPaths = { HeaderPath(testDataDirectory.includeDir(false), HeaderPath::IncludePath) };
 
     ProjectInfo pi = ProjectInfo(project);
     pi.appendProjectPart(part1);
diff --git a/src/plugins/cpptools/cppprojectfile.cpp b/src/plugins/cpptools/cppprojectfile.cpp
index eceea5f350..bc49892784 100644
--- a/src/plugins/cpptools/cppprojectfile.cpp
+++ b/src/plugins/cpptools/cppprojectfile.cpp
@@ -125,7 +125,7 @@ QDebug operator<<(QDebug stream, const CppTools::ProjectFile &cxxFile)
 
 namespace Internal {
 
-ProjectFileAdder::ProjectFileAdder(QList<ProjectFile> &files)
+ProjectFileAdder::ProjectFileAdder(QVector<ProjectFile> &files)
     : m_files(files)
 {
     addMapping(CppTools::Constants::C_SOURCE_MIMETYPE, ProjectFile::CSource);
diff --git a/src/plugins/cpptools/cppprojectfile.h b/src/plugins/cpptools/cppprojectfile.h
index bfc7d87b70..2ba48b710f 100644
--- a/src/plugins/cpptools/cppprojectfile.h
+++ b/src/plugins/cpptools/cppprojectfile.h
@@ -75,7 +75,7 @@ namespace Internal {
 class ProjectFileAdder
 {
 public:
-    ProjectFileAdder(QList<ProjectFile> &files);
+    ProjectFileAdder(QVector<ProjectFile> &files);
     ~ProjectFileAdder();
 
     bool maybeAdd(const QString &path);
@@ -84,7 +84,7 @@ private:
 
     void addMapping(const char *mimeName, ProjectFile::Kind kind);
 
-    QList<ProjectFile> &m_files;
+    QVector<ProjectFile> &m_files;
     QHash<QString, ProjectFile::Kind> m_mimeNameMapping;
 };
 
diff --git a/src/plugins/cpptools/cppprojects.cpp b/src/plugins/cpptools/cppprojects.cpp
index ba2b14ba0f..317baa6d68 100644
--- a/src/plugins/cpptools/cppprojects.cpp
+++ b/src/plugins/cpptools/cppprojects.cpp
@@ -49,131 +49,7 @@ using namespace CppTools;
 using namespace CppTools::Internal;
 using namespace ProjectExplorer;
 
-ProjectPart::ProjectPart()
-    : project(0)
-    , languageVersion(CXX14)
-    , languageExtensions(NoExtensions)
-    , qtVersion(UnknownQt)
-    , warningFlags(ToolChain::WarningsDefault)
-    , selectedForBuilding(true)
-{
-}
-
-static ProjectPart::HeaderPath toProjectPartHeaderPath(const ProjectExplorer::HeaderPath &headerPath)
-{
-    const ProjectPart::HeaderPath::Type headerPathType =
-        headerPath.kind() == ProjectExplorer::HeaderPath::FrameworkHeaderPath
-            ? ProjectPart::HeaderPath::FrameworkPath
-            : ProjectPart::HeaderPath::IncludePath;
-
-    return ProjectPart::HeaderPath(headerPath.path(), headerPathType);
-}
-
-/*!
-    \brief Retrieves info from concrete compiler using it's flags.
-
-    \param tc Either nullptr or toolchain for project's active target.
-    \param cxxflags C++ or Objective-C++ flags.
-    \param cflags C or ObjectiveC flags if possible, \a cxxflags otherwise.
-*/
-void ProjectPart::evaluateToolchain(const ToolChain *tc,
-                                    const QStringList &commandLineFlags,
-                                    const Utils::FileName &sysRoot)
-{
-    if (!tc)
-        return;
-
-    using namespace ProjectExplorer;
-    ToolChain::CompilerFlags flags = tc->compilerFlags(commandLineFlags);
-
-    if (flags & ToolChain::StandardC11)
-        languageVersion = C11;
-    else if (flags & ToolChain::StandardC99)
-        languageVersion = C99;
-    else if (flags & ToolChain::StandardCxx17)
-        languageVersion = CXX17;
-    else if (flags & ToolChain::StandardCxx14)
-        languageVersion = CXX14;
-    else if (flags & ToolChain::StandardCxx11)
-        languageVersion = CXX11;
-    else if (flags & ToolChain::StandardCxx98)
-        languageVersion = CXX98;
-    else
-        languageVersion = CXX11;
-
-    if (flags & ToolChain::BorlandExtensions)
-        languageExtensions |= BorlandExtensions;
-    if (flags & ToolChain::GnuExtensions)
-        languageExtensions |= GnuExtensions;
-    if (flags & ToolChain::MicrosoftExtensions)
-        languageExtensions |= MicrosoftExtensions;
-    if (flags & ToolChain::OpenMP)
-        languageExtensions |= OpenMPExtensions;
-    if (flags & ToolChain::ObjectiveC)
-        languageExtensions |= ObjectiveCExtensions;
-
-    warningFlags = tc->warningFlags(commandLineFlags);
-
-    const QList<ProjectExplorer::HeaderPath> headers = tc->systemHeaderPaths(commandLineFlags, sysRoot);
-    foreach (const ProjectExplorer::HeaderPath &header, headers) {
-        const HeaderPath headerPath = toProjectPartHeaderPath(header);
-        if (!headerPaths.contains(headerPath))
-            headerPaths << headerPath;
-    }
-
-    toolchainDefines = tc->predefinedMacros(commandLineFlags);
-    toolchainType = tc->typeId();
-    updateLanguageFeatures();
-}
-
-void ProjectPart::updateLanguageFeatures()
-{
-    const bool hasQt = qtVersion != NoQt;
-    languageFeatures.cxx11Enabled = languageVersion >= CXX11;
-    languageFeatures.qtEnabled = hasQt;
-    languageFeatures.qtMocRunEnabled = hasQt;
-    if (!hasQt) {
-        languageFeatures.qtKeywordsEnabled = false;
-    } else {
-        const QByteArray noKeywordsMacro = "#define QT_NO_KEYWORDS";
-        const int noKeywordsIndex = projectDefines.indexOf(noKeywordsMacro);
-        if (noKeywordsIndex == -1) {
-            languageFeatures.qtKeywordsEnabled = true;
-        } else {
-            const char nextChar = projectDefines.at(noKeywordsIndex + noKeywordsMacro.length());
-            // Detect "#define QT_NO_KEYWORDS" and "#define QT_NO_KEYWORDS 1", but exclude
-            // "#define QT_NO_KEYWORDS_FOO"
-            languageFeatures.qtKeywordsEnabled = nextChar != '\n' && nextChar != ' ';
-        }
-    }
-}
-
-ProjectPart::Ptr ProjectPart::copy() const
-{
-    return Ptr(new ProjectPart(*this));
-}
 
-QString ProjectPart::id() const
-{
-    QString projectPartId = QDir::fromNativeSeparators(projectFile);
-    if (!displayName.isEmpty())
-        projectPartId.append(QLatin1Char(' ') + displayName);
-    return projectPartId;
-}
-
-QByteArray ProjectPart::readProjectConfigFile(const ProjectPart::Ptr &part)
-{
-    QByteArray result;
-
-    QFile f(part->projectConfigFile);
-    if (f.open(QIODevice::ReadOnly)) {
-        QTextStream is(&f);
-        result = is.readAll().toUtf8();
-        f.close();
-    }
-
-    return result;
-}
 
 ProjectInfo::ProjectInfo()
 {}
@@ -235,7 +111,7 @@ void ProjectInfo::appendProjectPart(const ProjectPart::Ptr &part)
 
 void ProjectInfo::finish()
 {
-    typedef ProjectPart::HeaderPath HeaderPath;
+    typedef ProjectPartHeaderPath HeaderPath;
 
     QSet<HeaderPath> incs;
     foreach (const ProjectPart::Ptr &part, m_projectParts) {
@@ -263,7 +139,7 @@ void ProjectInfo::finish()
     }
 }
 
-const ProjectPart::HeaderPaths ProjectInfo::headerPaths() const
+const ProjectPartHeaderPaths ProjectInfo::headerPaths() const
 {
     return m_headerPaths;
 }
@@ -392,7 +268,7 @@ void ProjectPartBuilder::setDefines(const QByteArray &defines)
     m_templatePart->projectDefines = defines;
 }
 
-void ProjectPartBuilder::setHeaderPaths(const ProjectPart::HeaderPaths &headerPaths)
+void ProjectPartBuilder::setHeaderPaths(const ProjectPartHeaderPaths &headerPaths)
 {
     m_templatePart->headerPaths = headerPaths;
 }
@@ -402,7 +278,7 @@ void ProjectPartBuilder::setIncludePaths(const QStringList &includePaths)
     m_templatePart->headerPaths.clear();
 
     foreach (const QString &includeFile, includePaths) {
-        ProjectPart::HeaderPath hp(includeFile, ProjectPart::HeaderPath::IncludePath);
+        ProjectPartHeaderPath hp(includeFile, ProjectPartHeaderPath::IncludePath);
 
         // The simple project managers are utterly ignorant of frameworks on OSX, and won't report
         // framework paths. The work-around is to check if the include path ends in ".framework",
@@ -410,8 +286,8 @@ void ProjectPartBuilder::setIncludePaths(const QStringList &includePaths)
         if (includeFile.endsWith(QLatin1String(".framework"))) {
             const int slashIdx = includeFile.lastIndexOf(QLatin1Char('/'));
             if (slashIdx != -1) {
-                hp = ProjectPart::HeaderPath(includeFile.left(slashIdx),
-                                             ProjectPart::HeaderPath::FrameworkPath);
+                hp = ProjectPartHeaderPath(includeFile.left(slashIdx),
+                                           ProjectPartHeaderPath::FrameworkPath);
             }
         }
 
@@ -548,7 +424,7 @@ void CompilerOptionsBuilder::addDefine(const QByteArray &defineLine)
 
 void CompilerOptionsBuilder::addHeaderPathOptions()
 {
-    typedef ProjectPart::HeaderPath HeaderPath;
+    typedef ProjectPartHeaderPath HeaderPath;
     const QString defaultPrefix = includeOption();
 
     QStringList result;
diff --git a/src/plugins/cpptools/cppprojects.h b/src/plugins/cpptools/cppprojects.h
index 3d8ddba0be..d6257abb3f 100644
--- a/src/plugins/cpptools/cppprojects.h
+++ b/src/plugins/cpptools/cppprojects.h
@@ -34,6 +34,7 @@
 #include "cpptools_global.h"
 
 #include "cppprojectfile.h"
+#include "projectpart.h"
 
 #include <projectexplorer/toolchain.h>
 
@@ -51,99 +52,6 @@ namespace Utils { class FileName; }
 namespace CppTools {
 class ProjectFile;
 
-class CPPTOOLS_EXPORT ProjectPart
-{
-public: // Types
-    enum LanguageVersion {
-        C89,
-        C99,
-        C11,
-        CXX98,
-        CXX03,
-        CXX11,
-        CXX14,
-        CXX17
-    };
-
-    enum LanguageExtension {
-        NoExtensions         = 0,
-        GnuExtensions        = 1 << 0,
-        MicrosoftExtensions  = 1 << 1,
-        BorlandExtensions    = 1 << 2,
-        OpenMPExtensions     = 1 << 3,
-        ObjectiveCExtensions = 1 << 4,
-
-        AllExtensions = GnuExtensions | MicrosoftExtensions | BorlandExtensions | OpenMPExtensions
-                      | ObjectiveCExtensions
-    };
-    Q_DECLARE_FLAGS(LanguageExtensions, LanguageExtension)
-
-    enum QtVersion {
-        UnknownQt = -1,
-        NoQt = 0,
-        Qt4 = 1,
-        Qt5 = 2
-    };
-
-    typedef QSharedPointer<ProjectPart> Ptr;
-
-    struct HeaderPath {
-        enum Type { InvalidPath, IncludePath, FrameworkPath };
-
-    public:
-        QString path;
-        Type type;
-
-        HeaderPath(): type(InvalidPath) {}
-        HeaderPath(const QString &path, Type type): path(path), type(type) {}
-
-        bool isValid() const { return type != InvalidPath; }
-        bool isFrameworkPath() const { return type == FrameworkPath; }
-
-        bool operator==(const HeaderPath &other) const
-        { return path == other.path && type == other.type; }
-
-        bool operator!=(const HeaderPath &other) const
-        { return !(*this == other); }
-    };
-    typedef QList<HeaderPath> HeaderPaths;
-
-public: // methods
-    ProjectPart();
-
-    void evaluateToolchain(const ProjectExplorer::ToolChain *tc,
-                           const QStringList &commandLineFlags,
-                           const Utils::FileName &sysRoot);
-
-    void updateLanguageFeatures();
-    Ptr copy() const;
-
-    QString id() const;
-
-    static QByteArray readProjectConfigFile(const ProjectPart::Ptr &part);
-
-public: // fields
-    QString displayName;
-    QString projectFile;
-    ProjectExplorer::Project *project;
-    QList<ProjectFile> files;
-    QString projectConfigFile; // currently only used by the Generic Project Manager
-    QByteArray projectDefines;
-    QByteArray toolchainDefines;
-    Core::Id toolchainType;
-    QList<HeaderPath> headerPaths;
-    QStringList precompiledHeaders;
-    LanguageVersion languageVersion;
-    LanguageExtensions languageExtensions;
-    CPlusPlus::LanguageFeatures languageFeatures;
-    QtVersion qtVersion;
-    ProjectExplorer::ToolChain::WarningFlags warningFlags;
-    bool selectedForBuilding;
-};
-
-inline uint qHash(const ProjectPart::HeaderPath &key, uint seed = 0)
-{ return ((qHash(key.path) << 2) | key.type) ^ seed; }
-
 class CPPTOOLS_EXPORT ProjectInfo
 {
 public:
@@ -164,7 +72,7 @@ public:
     void appendProjectPart(const ProjectPart::Ptr &part);
     void finish();
 
-    const ProjectPart::HeaderPaths headerPaths() const;
+    const ProjectPartHeaderPaths headerPaths() const;
     const QSet<QString> sourceFiles() const;
     const QByteArray defines() const;
 
@@ -178,7 +86,7 @@ private:
     QList<ProjectPart::Ptr> m_projectParts;
     CompilerCallData m_compilerCallData;
     // The members below are (re)calculated from the project parts with finish()
-    ProjectPart::HeaderPaths m_headerPaths;
+    ProjectPartHeaderPaths m_headerPaths;
     QSet<QString> m_sourceFiles;
     QByteArray m_defines;
 };
@@ -192,7 +100,7 @@ public:
     void setCFlags(const QStringList &flags);
     void setCxxFlags(const QStringList &flags);
     void setDefines(const QByteArray &defines);
-    void setHeaderPaths(const ProjectPart::HeaderPaths &headerPaths);
+    void setHeaderPaths(const ProjectPartHeaderPaths &headerPaths);
     void setIncludePaths(const QStringList &includePaths);
     void setPreCompiledHeaders(const QStringList &pchs);
     void setProjectFile(const QString &projectFile);
diff --git a/src/plugins/cpptools/cppsourceprocessor.cpp b/src/plugins/cpptools/cppsourceprocessor.cpp
index 036435d692..df9d03d80b 100644
--- a/src/plugins/cpptools/cppsourceprocessor.cpp
+++ b/src/plugins/cpptools/cppsourceprocessor.cpp
@@ -129,15 +129,15 @@ CppSourceProcessor::~CppSourceProcessor()
 void CppSourceProcessor::setWorkingCopy(const WorkingCopy &workingCopy)
 { m_workingCopy = workingCopy; }
 
-void CppSourceProcessor::setHeaderPaths(const ProjectPart::HeaderPaths &headerPaths)
+void CppSourceProcessor::setHeaderPaths(const ProjectPartHeaderPaths &headerPaths)
 {
     m_headerPaths.clear();
 
     for (int i = 0, ei = headerPaths.size(); i < ei; ++i) {
-        const ProjectPart::HeaderPath &path = headerPaths.at(i);
+        const ProjectPartHeaderPath &path = headerPaths.at(i);
 
-        if (path.type == ProjectPart::HeaderPath::IncludePath)
-            m_headerPaths.append(ProjectPart::HeaderPath(cleanPath(path.path), path.type));
+        if (path.type == ProjectPartHeaderPath::IncludePath)
+            m_headerPaths.append(ProjectPartHeaderPath(cleanPath(path.path), path.type));
         else
             addFrameworkPath(path);
     }
@@ -155,15 +155,15 @@ void CppSourceProcessor::setLanguageFeatures(const LanguageFeatures languageFeat
 // has private frameworks in:
 //  <framework-path>/ApplicationServices.framework/Frameworks
 // if the "Frameworks" folder exists inside the top level framework.
-void CppSourceProcessor::addFrameworkPath(const ProjectPart::HeaderPath &frameworkPath)
+void CppSourceProcessor::addFrameworkPath(const ProjectPartHeaderPath &frameworkPath)
 {
     QTC_ASSERT(frameworkPath.isFrameworkPath(), return);
 
     // The algorithm below is a bit too eager, but that's because we're not getting
     // in the frameworks we're linking against. If we would have that, then we could
     // add only those private frameworks.
-    const ProjectPart::HeaderPath cleanFrameworkPath(cleanPath(frameworkPath.path),
-                                                     frameworkPath.type);
+    const ProjectPartHeaderPath cleanFrameworkPath(cleanPath(frameworkPath.path),
+                                                   frameworkPath.type);
     if (!m_headerPaths.contains(cleanFrameworkPath))
         m_headerPaths.append(cleanFrameworkPath);
 
@@ -175,8 +175,8 @@ void CppSourceProcessor::addFrameworkPath(const ProjectPart::HeaderPath &framewo
         const QFileInfo privateFrameworks(framework.absoluteFilePath(),
                                           QLatin1String("Frameworks"));
         if (privateFrameworks.exists() && privateFrameworks.isDir())
-            addFrameworkPath(ProjectPart::HeaderPath(privateFrameworks.absoluteFilePath(),
-                                                     frameworkPath.type));
+            addFrameworkPath(ProjectPartHeaderPath(privateFrameworks.absoluteFilePath(),
+                                                   frameworkPath.type));
     }
 }
 
@@ -312,7 +312,7 @@ QString CppSourceProcessor::resolveFile_helper(const QString &fileName, IncludeT
         const QString name = frameworkName + QLatin1String(".framework/Headers/")
             + fileName.mid(index + 1);
 
-        foreach (const ProjectPart::HeaderPath &headerPath, m_headerPaths) {
+        foreach (const ProjectPartHeaderPath &headerPath, m_headerPaths) {
             if (!headerPath.isFrameworkPath())
                 continue;
             const QString path = headerPath.path + name;
diff --git a/src/plugins/cpptools/cppsourceprocessor.h b/src/plugins/cpptools/cppsourceprocessor.h
index 2b4d805a54..e72ae45062 100644
--- a/src/plugins/cpptools/cppsourceprocessor.h
+++ b/src/plugins/cpptools/cppsourceprocessor.h
@@ -66,7 +66,7 @@ public:
     ~CppSourceProcessor();
 
     void setWorkingCopy(const CppTools::WorkingCopy &workingCopy);
-    void setHeaderPaths(const ProjectPart::HeaderPaths &headerPaths);
+    void setHeaderPaths(const ProjectPartHeaderPaths &headerPaths);
     void setLanguageFeatures(CPlusPlus::LanguageFeatures languageFeatures);
     void setTodo(const QSet<QString> &files);
 
@@ -80,7 +80,7 @@ public:
     void setGlobalSnapshot(const CPlusPlus::Snapshot &snapshot) { m_globalSnapshot = snapshot; }
 
 private:
-    void addFrameworkPath(const ProjectPart::HeaderPath &frameworkPath);
+    void addFrameworkPath(const ProjectPartHeaderPath &frameworkPath);
 
     CPlusPlus::Document::Ptr switchCurrentDocument(CPlusPlus::Document::Ptr doc);
 
@@ -116,7 +116,7 @@ private:
     DocumentCallback m_documentFinished;
     CPlusPlus::Environment m_env;
     CPlusPlus::Preprocessor m_preprocess;
-    ProjectPart::HeaderPaths m_headerPaths;
+    ProjectPartHeaderPaths m_headerPaths;
     CPlusPlus::LanguageFeatures m_languageFeatures;
     CppTools::WorkingCopy m_workingCopy;
     QSet<QString> m_included;
diff --git a/src/plugins/cpptools/cppsourceprocessor_test.cpp b/src/plugins/cpptools/cppsourceprocessor_test.cpp
index bdc2cf2a38..487003f8c8 100644
--- a/src/plugins/cpptools/cppsourceprocessor_test.cpp
+++ b/src/plugins/cpptools/cppsourceprocessor_test.cpp
@@ -68,9 +68,9 @@ public:
     {
         QScopedPointer<CppSourceProcessor> sourceProcessor(
                     CppModelManager::createSourceProcessor());
-        const ProjectPart::HeaderPath hp(TestIncludePaths::directoryOfTestFile(),
-                                         ProjectPart::HeaderPath::IncludePath);
-        sourceProcessor->setHeaderPaths(ProjectPart::HeaderPaths() << hp);
+        const ProjectPartHeaderPath hp(TestIncludePaths::directoryOfTestFile(),
+                                       ProjectPartHeaderPath::IncludePath);
+        sourceProcessor->setHeaderPaths(ProjectPartHeaderPaths() << hp);
         sourceProcessor->run(filePath);
 
         Document::Ptr document = m_cmm->document(filePath);
@@ -212,9 +212,9 @@ void CppToolsPlugin::test_cppsourceprocessor_includeNext()
 
     CppSourceProcessor::DocumentCallback documentCallback = [](const Document::Ptr &){};
     CppSourceProcessor sourceProcessor(Snapshot(), documentCallback);
-    ProjectPart::HeaderPaths headerPaths = ProjectPart::HeaderPaths()
-        << ProjectPart::HeaderPath(customHeaderPath, ProjectPart::HeaderPath::IncludePath)
-        << ProjectPart::HeaderPath(systemHeaderPath, ProjectPart::HeaderPath::IncludePath);
+    ProjectPartHeaderPaths headerPaths = ProjectPartHeaderPaths()
+        << ProjectPartHeaderPath(customHeaderPath, ProjectPartHeaderPath::IncludePath)
+        << ProjectPartHeaderPath(systemHeaderPath, ProjectPartHeaderPath::IncludePath);
     sourceProcessor.setHeaderPaths(headerPaths);
 
     sourceProcessor.run(mainFilePath);
diff --git a/src/plugins/cpptools/cpptools.pro b/src/plugins/cpptools/cpptools.pro
index 9004507bd8..c2bd7d89e2 100644
--- a/src/plugins/cpptools/cpptools.pro
+++ b/src/plugins/cpptools/cpptools.pro
@@ -69,7 +69,9 @@ HEADERS += \
     senddocumenttracker.h \
     cpptoolsbridge.h \
     cpptoolsbridgeinterface.h \
-    cpptoolsbridgeqtcreatorimplementation.h
+    cpptoolsbridgeqtcreatorimplementation.h \
+    projectpart.h \
+    projectpartheaderpath.h
 
 SOURCES += \
     abstracteditorsupport.cpp \
@@ -135,7 +137,8 @@ SOURCES += \
     typehierarchybuilder.cpp \
     senddocumenttracker.cpp \
     cpptoolsbridge.cpp \
-    cpptoolsbridgeqtcreatorimplementation.cpp
+    cpptoolsbridgeqtcreatorimplementation.cpp \
+    projectpart.cpp
 
 FORMS += \
     completionsettingspage.ui \
diff --git a/src/plugins/cpptools/cpptools.qbs b/src/plugins/cpptools/cpptools.qbs
index dd4a7ce1d1..f7ec8e0d14 100644
--- a/src/plugins/cpptools/cpptools.qbs
+++ b/src/plugins/cpptools/cpptools.qbs
@@ -86,6 +86,8 @@ QtcPlugin {
         "includeutils.cpp", "includeutils.h",
         "indexitem.cpp", "indexitem.h",
         "insertionpointlocator.cpp", "insertionpointlocator.h",
+        "projectpart.cpp", "projectpart.h",
+        "projectpartheaderpath.h",
         "searchsymbols.cpp", "searchsymbols.h",
         "semantichighlighter.cpp", "semantichighlighter.h",
         "senddocumenttracker.cpp", "senddocumenttracker.h",
diff --git a/src/plugins/cpptools/includeutils.cpp b/src/plugins/cpptools/includeutils.cpp
index fa4beb6786..114efb80fd 100644
--- a/src/plugins/cpptools/includeutils.cpp
+++ b/src/plugins/cpptools/includeutils.cpp
@@ -542,10 +542,10 @@ static QList<Include> includesForSource(const QString &filePath)
     CppModelManager *cmm = CppModelManager::instance();
     cmm->GC();
     QScopedPointer<CppSourceProcessor> sourceProcessor(CppModelManager::createSourceProcessor());
-    sourceProcessor->setHeaderPaths(ProjectPart::HeaderPaths()
-                                    << ProjectPart::HeaderPath(
+    sourceProcessor->setHeaderPaths(ProjectPartHeaderPaths()
+                                    << ProjectPartHeaderPath(
                                         TestIncludePaths::globalIncludePath(),
-                                        ProjectPart::HeaderPath::IncludePath));
+                                        ProjectPartHeaderPath::IncludePath));
     sourceProcessor->run(filePath);
 
     Document::Ptr document = cmm->document(filePath);
diff --git a/src/plugins/cpptools/projectpart.cpp b/src/plugins/cpptools/projectpart.cpp
new file mode 100644
index 0000000000..bd7a1138b7
--- /dev/null
+++ b/src/plugins/cpptools/projectpart.cpp
@@ -0,0 +1,165 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://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 http://www.qt.io/terms-conditions.  For further information
+** use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, The Qt Company gives you certain additional
+** rights.  These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+#include "projectpart.h"
+
+#include <projectexplorer/headerpath.h>
+
+#include <QDir>
+#include <QTextStream>
+
+namespace CppTools {
+
+ProjectPart::ProjectPart()
+    : project(0)
+    , languageVersion(CXX14)
+    , languageExtensions(NoExtensions)
+    , qtVersion(UnknownQt)
+    , warningFlags(ProjectExplorer::ToolChain::WarningsDefault)
+    , selectedForBuilding(true)
+{
+}
+
+static ProjectPartHeaderPath toProjectPartHeaderPath(const ProjectExplorer::HeaderPath &headerPath)
+{
+    const ProjectPartHeaderPath::Type headerPathType =
+        headerPath.kind() == ProjectExplorer::HeaderPath::FrameworkHeaderPath
+            ? ProjectPartHeaderPath::FrameworkPath
+            : ProjectPartHeaderPath::IncludePath;
+
+    return ProjectPartHeaderPath(headerPath.path(), headerPathType);
+}
+
+/*!
+    \brief Retrieves info from concrete compiler using it's flags.
+
+    \param tc Either nullptr or toolchain for project's active target.
+    \param cxxflags C++ or Objective-C++ flags.
+    \param cflags C or ObjectiveC flags if possible, \a cxxflags otherwise.
+*/
+void ProjectPart::evaluateToolchain(const ProjectExplorer::ToolChain *tc,
+                                    const QStringList &commandLineFlags,
+                                    const Utils::FileName &sysRoot)
+{
+    if (!tc)
+        return;
+
+    using namespace ProjectExplorer;
+    ToolChain::CompilerFlags flags = tc->compilerFlags(commandLineFlags);
+
+    if (flags & ToolChain::StandardC11)
+        languageVersion = C11;
+    else if (flags & ToolChain::StandardC99)
+        languageVersion = C99;
+    else if (flags & ToolChain::StandardCxx17)
+        languageVersion = CXX17;
+    else if (flags & ToolChain::StandardCxx14)
+        languageVersion = CXX14;
+    else if (flags & ToolChain::StandardCxx11)
+        languageVersion = CXX11;
+    else if (flags & ToolChain::StandardCxx98)
+        languageVersion = CXX98;
+    else
+        languageVersion = CXX11;
+
+    if (flags & ToolChain::BorlandExtensions)
+        languageExtensions |= BorlandExtensions;
+    if (flags & ToolChain::GnuExtensions)
+        languageExtensions |= GnuExtensions;
+    if (flags & ToolChain::MicrosoftExtensions)
+        languageExtensions |= MicrosoftExtensions;
+    if (flags & ToolChain::OpenMP)
+        languageExtensions |= OpenMPExtensions;
+    if (flags & ToolChain::ObjectiveC)
+        languageExtensions |= ObjectiveCExtensions;
+
+    warningFlags = tc->warningFlags(commandLineFlags);
+
+    const QList<ProjectExplorer::HeaderPath> headers = tc->systemHeaderPaths(commandLineFlags, sysRoot);
+    foreach (const ProjectExplorer::HeaderPath &header, headers) {
+        const ProjectPartHeaderPath headerPath = toProjectPartHeaderPath(header);
+        if (!headerPaths.contains(headerPath))
+            headerPaths << headerPath;
+    }
+
+    toolchainDefines = tc->predefinedMacros(commandLineFlags);
+    toolchainType = tc->typeId();
+    updateLanguageFeatures();
+}
+
+void ProjectPart::updateLanguageFeatures()
+{
+    const bool hasQt = qtVersion != NoQt;
+    languageFeatures.cxx11Enabled = languageVersion >= CXX11;
+    languageFeatures.qtEnabled = hasQt;
+    languageFeatures.qtMocRunEnabled = hasQt;
+    if (!hasQt) {
+        languageFeatures.qtKeywordsEnabled = false;
+    } else {
+        const QByteArray noKeywordsMacro = "#define QT_NO_KEYWORDS";
+        const int noKeywordsIndex = projectDefines.indexOf(noKeywordsMacro);
+        if (noKeywordsIndex == -1) {
+            languageFeatures.qtKeywordsEnabled = true;
+        } else {
+            const char nextChar = projectDefines.at(noKeywordsIndex + noKeywordsMacro.length());
+            // Detect "#define QT_NO_KEYWORDS" and "#define QT_NO_KEYWORDS 1", but exclude
+            // "#define QT_NO_KEYWORDS_FOO"
+            languageFeatures.qtKeywordsEnabled = nextChar != '\n' && nextChar != ' ';
+        }
+    }
+}
+
+ProjectPart::Ptr ProjectPart::copy() const
+{
+    return Ptr(new ProjectPart(*this));
+}
+
+QString ProjectPart::id() const
+{
+    QString projectPartId = QDir::fromNativeSeparators(projectFile);
+    if (!displayName.isEmpty())
+        projectPartId.append(QLatin1Char(' ') + displayName);
+    return projectPartId;
+}
+
+QByteArray ProjectPart::readProjectConfigFile(const ProjectPart::Ptr &part)
+{
+    QByteArray result;
+
+    QFile f(part->projectConfigFile);
+    if (f.open(QIODevice::ReadOnly)) {
+        QTextStream is(&f);
+        result = is.readAll().toUtf8();
+        f.close();
+    }
+
+    return result;
+}
+
+} // namespace CppTools
diff --git a/src/plugins/cpptools/projectpart.h b/src/plugins/cpptools/projectpart.h
new file mode 100644
index 0000000000..a04299cb0b
--- /dev/null
+++ b/src/plugins/cpptools/projectpart.h
@@ -0,0 +1,127 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://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 http://www.qt.io/terms-conditions.  For further information
+** use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, The Qt Company gives you certain additional
+** rights.  These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+#ifndef CPPTOOLS_PROJECTPART_H
+#define CPPTOOLS_PROJECTPART_H
+
+#include "cpptools_global.h"
+
+#include "cppprojectfile.h"
+#include "projectpartheaderpath.h"
+
+#include <projectexplorer/toolchain.h>
+
+#include <coreplugin/id.h>
+
+#include <utils/fileutils.h>
+
+#include <cplusplus/Token.h>
+
+#include <QString>
+#include <QSharedPointer>
+
+namespace ProjectExplorer {
+class Project;
+}
+
+namespace CppTools {
+
+class CPPTOOLS_EXPORT ProjectPart
+{
+public: // Types
+    enum LanguageVersion {
+        C89,
+        C99,
+        C11,
+        CXX98,
+        CXX03,
+        CXX11,
+        CXX14,
+        CXX17
+    };
+
+    enum LanguageExtension {
+        NoExtensions         = 0,
+        GnuExtensions        = 1 << 0,
+        MicrosoftExtensions  = 1 << 1,
+        BorlandExtensions    = 1 << 2,
+        OpenMPExtensions     = 1 << 3,
+        ObjectiveCExtensions = 1 << 4,
+
+        AllExtensions = GnuExtensions | MicrosoftExtensions | BorlandExtensions | OpenMPExtensions
+                      | ObjectiveCExtensions
+    };
+    Q_DECLARE_FLAGS(LanguageExtensions, LanguageExtension)
+
+    enum QtVersion {
+        UnknownQt = -1,
+        NoQt = 0,
+        Qt4 = 1,
+        Qt5 = 2
+    };
+
+    using Ptr = QSharedPointer<ProjectPart>;
+
+
+public: // methods
+    ProjectPart();
+
+    void evaluateToolchain(const ProjectExplorer::ToolChain *tc,
+                           const QStringList &commandLineFlags,
+                           const Utils::FileName &sysRoot);
+
+    void updateLanguageFeatures();
+    Ptr copy() const;
+
+    QString id() const;
+
+    static QByteArray readProjectConfigFile(const ProjectPart::Ptr &part);
+
+public: // fields
+    QString displayName;
+    QString projectFile;
+    ProjectExplorer::Project *project;
+    QVector<ProjectFile> files;
+    QString projectConfigFile; // currently only used by the Generic Project Manager
+    QByteArray projectDefines;
+    QByteArray toolchainDefines;
+    Core::Id toolchainType;
+    ProjectPartHeaderPaths headerPaths;
+    QStringList precompiledHeaders;
+    LanguageVersion languageVersion;
+    LanguageExtensions languageExtensions;
+    CPlusPlus::LanguageFeatures languageFeatures;
+    QtVersion qtVersion;
+    ProjectExplorer::ToolChain::WarningFlags warningFlags;
+    bool selectedForBuilding;
+};
+
+} // namespace CppTools
+
+#endif // CPPTOOLS_PROJECTPART_H
diff --git a/src/plugins/cpptools/projectpartheaderpath.h b/src/plugins/cpptools/projectpartheaderpath.h
new file mode 100644
index 0000000000..7ba86ae132
--- /dev/null
+++ b/src/plugins/cpptools/projectpartheaderpath.h
@@ -0,0 +1,87 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://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 http://www.qt.io/terms-conditions.  For further information
+** use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file.  Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, The Qt Company gives you certain additional
+** rights.  These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#ifndef PROJECTPARTHEADERPATH_H
+#define PROJECTPARTHEADERPATH_H
+
+#include <QVector>
+
+namespace CppTools {
+
+struct ProjectPartHeaderPath {
+    enum Type {
+        InvalidPath,
+        IncludePath,
+        FrameworkPath
+    };
+
+public:
+    QString path;
+    Type type;
+
+    ProjectPartHeaderPath()
+        : type(InvalidPath)
+    {}
+
+    ProjectPartHeaderPath(const QString &path, Type type)
+        : path(path),
+          type(type)
+    {}
+
+    bool isValid() const
+    {
+        return type != InvalidPath;
+    }
+
+    bool isFrameworkPath() const
+    {
+        return type == FrameworkPath;
+    }
+
+    bool operator==(const ProjectPartHeaderPath &other) const
+    {
+        return path == other.path
+            && type == other.type;
+    }
+
+    bool operator!=(const ProjectPartHeaderPath &other) const
+    {
+        return !(*this == other);
+    }
+};
+
+using ProjectPartHeaderPaths = QVector<ProjectPartHeaderPath>;
+
+inline uint qHash(const ProjectPartHeaderPath &key, uint seed = 0)
+{
+    return ((qHash(key.path) << 2) | key.type) ^ seed;
+}
+} // namespace CppTools
+#endif // PROJECTPARTHEADERPATH_H
diff --git a/src/plugins/genericprojectmanager/genericprojectplugin_test.cpp b/src/plugins/genericprojectmanager/genericprojectplugin_test.cpp
index 2be04fd3d7..f6694fef78 100644
--- a/src/plugins/genericprojectmanager/genericprojectplugin_test.cpp
+++ b/src/plugins/genericprojectmanager/genericprojectplugin_test.cpp
@@ -78,7 +78,7 @@ void GenericProjectPlugin::test_simple()
     QCOMPARE(pPart->files.first().kind, ProjectFile::CXXSource);
 }
 
-static QStringList simplify(const QList<ProjectFile> &files, const QString &prefix)
+static QStringList simplify(const QVector<ProjectFile> &files, const QString &prefix)
 {
     QStringList result;
 
diff --git a/src/plugins/qbsprojectmanager/qbsproject.cpp b/src/plugins/qbsprojectmanager/qbsproject.cpp
index 065cfa3109..e5ed08847f 100644
--- a/src/plugins/qbsprojectmanager/qbsproject.cpp
+++ b/src/plugins/qbsprojectmanager/qbsproject.cpp
@@ -728,20 +728,20 @@ void QbsProject::updateCppCodeModel()
                                                          QLatin1String(CONFIG_INCLUDEPATHS));
             list.append(props.getModulePropertiesAsStringList(QLatin1String(CONFIG_CPP_MODULE),
                                                               QLatin1String(CONFIG_SYSTEM_INCLUDEPATHS)));
-            CppTools::ProjectPart::HeaderPaths grpHeaderPaths;
+            CppTools::ProjectPartHeaderPaths grpHeaderPaths;
             foreach (const QString &p, list)
-                grpHeaderPaths += CppTools::ProjectPart::HeaderPath(
+                grpHeaderPaths += CppTools::ProjectPartHeaderPath(
                             FileName::fromUserInput(p).toString(),
-                            CppTools::ProjectPart::HeaderPath::IncludePath);
+                            CppTools::ProjectPartHeaderPath::IncludePath);
 
             list = props.getModulePropertiesAsStringList(QLatin1String(CONFIG_CPP_MODULE),
                                                          QLatin1String(CONFIG_FRAMEWORKPATHS));
             list.append(props.getModulePropertiesAsStringList(QLatin1String(CONFIG_CPP_MODULE),
                                                               QLatin1String(CONFIG_SYSTEM_FRAMEWORKPATHS)));
             foreach (const QString &p, list)
-                grpHeaderPaths += CppTools::ProjectPart::HeaderPath(
+                grpHeaderPaths += CppTools::ProjectPartHeaderPath(
                             FileName::fromUserInput(p).toString(),
-                            CppTools::ProjectPart::HeaderPath::FrameworkPath);
+                            CppTools::ProjectPartHeaderPath::FrameworkPath);
 
             ppBuilder.setHeaderPaths(grpHeaderPaths);
 
diff --git a/src/plugins/qmakeprojectmanager/qmakeproject.cpp b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
index a6a31990b8..539e06794f 100644
--- a/src/plugins/qmakeprojectmanager/qmakeproject.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
@@ -44,6 +44,7 @@
 #include <coreplugin/icore.h>
 #include <coreplugin/progressmanager/progressmanager.h>
 #include <cpptools/cppmodelmanager.h>
+#include <cpptools/projectpartheaderpath.h>
 #include <qmljs/qmljsmodelmanagerinterface.h>
 #include <projectexplorer/buildmanager.h>
 #include <projectexplorer/buildtargetinfo.h>
@@ -469,16 +470,16 @@ void QmakeProject::updateCppCodeModel()
 
         foreach (const QString &inc, pro->variableValue(IncludePathVar)) {
             const auto headerPath
-                = ProjectPart::HeaderPath(inc, ProjectPart::HeaderPath::IncludePath);
+                = CppTools::ProjectPartHeaderPath(inc, CppTools::ProjectPartHeaderPath::IncludePath);
             if (!templatePart->headerPaths.contains(headerPath))
                 templatePart->headerPaths += headerPath;
         }
 
         if (qtVersion) {
             if (!qtVersion->frameworkInstallPath().isEmpty()) {
-                templatePart->headerPaths += ProjectPart::HeaderPath(
+                templatePart->headerPaths += CppTools::ProjectPartHeaderPath(
                             qtVersion->frameworkInstallPath(),
-                            ProjectPart::HeaderPath::FrameworkPath);
+                            CppTools::ProjectPartHeaderPath::FrameworkPath);
             }
         }