+ virtual void visit(ProgramSyntax::InterfaceBlock &);
+ virtual void visit(ProgramSyntax::FunctionDeclaration &);
+ void merge_down_assignments();
+ virtual void visit(ProgramSyntax::Conditional &);
+ virtual void visit(ProgramSyntax::Iteration &);
+ };
+
+ struct UnusedFunctionLocator: Visitor
+ {
+ typedef std::set<ProgramSyntax::Node *> ResultType;
+
+ std::set<ProgramSyntax::Node *> unused_nodes;
+ std::set<ProgramSyntax::FunctionDeclaration *> used_definitions;
+
+ const ResultType &get_result() const { return unused_nodes; }
+ virtual void visit(ProgramSyntax::FunctionCall &);
+ virtual void visit(ProgramSyntax::FunctionDeclaration &);