Changes in src/Common/PassVisitor.h [4eb31f2b:af5c204a]

File:

• src/Common/PassVisitor.h (modified) (3 diffs)

src/Common/PassVisitor.h

@@ -18 +18 @@
 // Templated visitor type
 // To use declare a PassVisitor< YOUR VISITOR TYPE >
-// The visitor type should specify the previsit/postvisit for types that are desired.
+// The visitor type should specify the previsit/postvisit/premutate/postmutate for types that are desired.
+// Note: previsit/postvisit/premutate/postmutate must be **public** members
+//
+// Several additional features are available through inheritance
+// | WithTypeSubstitution - provides polymorphic TypeSubstitution * env for the current expression
+// | WithStmtsToAdd       - provides the ability to insert statements before or after the current statement by adding new statements into
+//                          stmtsToAddBefore or stmtsToAddAfter respectively.
+// | WithShortCircuiting  - provides the ability to skip visiting child nodes; set skip_children to true if pre{visit,mutate} to skip visiting children
+// | WithScopes           - provides the ability to save/restore data like a LIFO stack; to save, call GuardValue with the variable to save, the variable
+//                          will automatically be restored to its previous value after the corresponding postvisit/postmutate teminates.
 //-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 template< typename pass_type >
@@ -86 +95 @@
         virtual void visit( ConstructorExpr * ctorExpr ) override final;
         virtual void visit( CompoundLiteralExpr *compLitExpr ) override final;
-        virtual void visit( UntypedValofExpr *valofExpr ) override final;
         virtual void visit( RangeExpr *rangeExpr ) override final;
         virtual void visit( UntypedTupleExpr *tupleExpr ) override final;
@@ -172 +180 @@
         virtual Expression* mutate( ConstructorExpr *ctorExpr ) override final;
         virtual Expression* mutate( CompoundLiteralExpr *compLitExpr ) override final;
-        virtual Expression* mutate( UntypedValofExpr *valofExpr ) override final;
         virtual Expression* mutate( RangeExpr *rangeExpr ) override final;
         virtual Expression* mutate( UntypedTupleExpr *tupleExpr ) override final;