CppEditor: Move static symbol finder instance to CppTools

...to it can be reused by other clients more easily. Also, in a
follow-up change it will have a project part dependency that can be
cleared inside the CppModelManager more easily.

Change-Id: Ic9f2ce5212a94fd05ab0571e9ad99d0a25f5bc5c
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

src/plugins/cpptools/cppfindreferences.cpp

@@ -405,10 +405,10 @@ void CppFindReferences::searchAgain()
 }
 
 namespace {
-class SymbolFinder : public SymbolVisitor
+class UidSymbolFinder : public SymbolVisitor
 {
 public:
-    SymbolFinder(const QList<QByteArray> &uid) : m_uid(uid), m_index(0), m_result(0) { }
+    UidSymbolFinder(const QList<QByteArray> &uid) : m_uid(uid), m_index(0), m_result(0) { }
     Symbol *result() const { return m_result; }
 
     bool preVisit(Symbol *symbol)
@@ -460,7 +460,7 @@ Symbol *CppFindReferences::findSymbol(const CppFindReferencesParameters &paramet
     doc->check();
 
     // find matching symbol in new document and return the new parameters
-    SymbolFinder finder(parameters.symbolId);
+    UidSymbolFinder finder(parameters.symbolId);
     finder.accept(doc->globalNamespace());
     if (finder.result()) {
         *context = LookupContext(doc, snapshot);

src/plugins/cpptools/cppmodelmanager.cpp

@@ -44,6 +44,7 @@
 #include "cpptoolsplugin.h"
 #include "cpptoolsreuse.h"
 #include "editordocumenthandle.h"
+#include "symbolfinder.h"
 
 #include <coreplugin/documentmanager.h>
 #include <coreplugin/icore.h>
@@ -163,6 +164,8 @@ public:
 
     CppFindReferences *m_findReferences;
 
+    SymbolFinder m_symbolFinder;
+
     bool m_enableGC;
     QTimer m_delayedGcTimer;
 };
@@ -1272,4 +1275,9 @@ void CppModelManager::enableGarbageCollector(bool enable)
     d->m_enableGC = enable;
 }
 
+SymbolFinder *CppModelManager::symbolFinder()
+{
+    return &d->m_symbolFinder;
+}
+
 } // namespace CppTools

src/plugins/cpptools/cppmodelmanager.h

@@ -58,6 +58,7 @@ class BaseEditorDocumentProcessor;
 class CppCompletionAssistProvider;
 class CppEditorDocumentHandle;
 class CppIndexingSupport;
+class SymbolFinder;
 class WorkingCopy;
 
 namespace Internal {
@@ -161,6 +162,8 @@ public:
 
     void enableGarbageCollector(bool enable);
 
+    SymbolFinder *symbolFinder();
+
     static QSet<QString> timeStampModifiedFiles(const QList<Document::Ptr> &documentsToCheck);
 
     static Internal::CppSourceProcessor *createSourceProcessor();