Clang: add globalFollowSymbol to RefactoringEngine

Allows to follow outside of current TU.

Change-Id: Ieea2fd72bfdf6d60a988b40efcf2f41c5a71d045
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

src/plugins/cpptools/refactoringengineinterface.h

@@ -29,12 +29,15 @@
 #include "cursorineditor.h"
 #include "usages.h"
 
+#include <utils/link.h>
 #include <utils/fileutils.h>
 #include <utils/smallstring.h>
 
 #include <clangsupport/sourcelocationscontainer.h>
 #include <clangsupport/refactoringclientinterface.h>
 
+#include <cplusplus/CppDocument.h>
+
 namespace TextEditor {
 class TextEditorWidget;
 } // namespace TextEditor
@@ -42,6 +45,7 @@ class TextEditorWidget;
 namespace CppTools {
 
 class ProjectPart;
+class SymbolFinder;
 
 enum class CallType
 {
@@ -54,6 +58,7 @@ class CPPTOOLS_EXPORT RefactoringEngineInterface
 {
 public:
     using RenameCallback = ClangBackEnd::RefactoringClientInterface::RenameCallback;
+    using Link = Utils::Link;
 
     virtual ~RefactoringEngineInterface() {}
 
@@ -65,6 +70,11 @@ public:
                               const QString &replacement) = 0;
     virtual void findUsages(const CppTools::CursorInEditor &data,
                             UsagesCallback &&showUsagesCallback) const = 0;
+    virtual Link globalFollowSymbol(const CursorInEditor &data,
+                                    const CPlusPlus::Snapshot &snapshot,
+                                    const CPlusPlus::Document::Ptr &documentFromSemanticInfo,
+                                    SymbolFinder *symbolFinder,
+                                    bool inNextSplit) const = 0;
     virtual bool isRefactoringEngineAvailable() const { return true; }
 };