Introduced a parallel indexer. It is ifdef-out atm.

src/libs/cplusplus/CppDocument.cpp

@@ -230,7 +230,8 @@ Document::Ptr Document::create(const QString &fileName)
 
 void Document::setSource(const QByteArray &source)
 {
-    _translationUnit->setSource(source.constBegin(), source.size());
+    _source = source;
+    _translationUnit->setSource(_source.constBegin(), _source.size());
 }
 
 void Document::startSkippingBlocks(unsigned start)
@@ -250,6 +251,21 @@ void Document::stopSkippingBlocks(unsigned stop)
         _skippedBlocks.back() = Block(start, stop);
 }
 
+bool Document::isTokenized() const
+{
+    return _translationUnit->isTokenized();
+}
+
+void Document::tokenize()
+{
+    _translationUnit->tokenize();
+}
+
+bool Document::isParsed() const
+{
+    return _translationUnit->isParsed();
+}
+
 bool Document::parse(ParseMode mode)
 {
     TranslationUnit::ParseMode m = TranslationUnit::ParseTranlationUnit;
@@ -295,6 +311,11 @@ void Document::check()
     }
 }
 
+void Document::releaseSource()
+{
+    _source.clear();
+}
+
 void Document::releaseTranslationUnit()
 {
     _translationUnit->release();

src/libs/cplusplus/CppDocument.h

@@ -96,8 +96,15 @@ public:
         ParseStatement
     };
 
+    bool isTokenized() const;
+    void tokenize();
+
+    bool isParsed() const;
     bool parse(ParseMode mode = ParseTranlationUnit);
+
     void check();
+
+    void releaseSource();
     void releaseTranslationUnit();
 
     static Ptr create(const QString &fileName);
@@ -233,6 +240,7 @@ private:
     QList<Macro> _definedMacros;
     QList<Block> _skippedBlocks;
     QList<MacroUse> _macroUses;
+    QByteArray _source;
 };
 
 class CPLUSPLUS_EXPORT Snapshot: public QMap<QString, Document::Ptr>