Refactoring: Introduce immutable and mutable interfaces

Split Definition/ClassDef/NamespaceDef/MemberDef into a immutable and mutable part
Aliases are immutable, other symbols are stored using an immutable
interface but can be made mutable explicitly by dynamic casting.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/pagedef.h b/src/pagedef.h
index a1f08a5..dbd1ef1 100644
--- a/src/pagedef.h
+++ b/src/pagedef.h
@@ -24,7 +24,7 @@ class OutputList;
 class FTextStream;
 
 /** @brief A model of a page symbol. */
-class PageDef : virtual public Definition
+class PageDef : virtual public DefinitionMutable
 {
   public:
     virtual ~PageDef() {}