+ virtual void visit(FunctionDeclaration &) { }
+};
+
+/** Manipulates specialization constants. If values are specified, turns
+specialization constants into normal constants. Without values assigns
+automatic constant_ids to specialization constants. */
+class ConstantSpecializer: private TraversingVisitor
+{
+private:
+ const std::map<std::string, int> *values;
+
+public:
+ ConstantSpecializer();
+
+ void apply(Stage &, const std::map<std::string, int> *);
+
+private:
+ virtual void visit(VariableDeclaration &);
+};
+
+/** Forms links between nested blocks in the syntax tree. */
+class BlockHierarchyResolver: private TraversingVisitor
+{
+private:
+ bool r_any_resolved;
+
+public:
+ BlockHierarchyResolver(): r_any_resolved(false) { }
+
+ bool apply(Stage &s) { r_any_resolved = false; s.content.visit(*this); return r_any_resolved; }
+
+private:
+ virtual void enter(Block &);
+};
+
+/** Resolves types of variables and base types of other types. */
+class TypeResolver: private TraversingVisitor
+{
+private:
+ Stage *stage;
+ std::map<TypeDeclaration *, TypeDeclaration *> alias_map;
+ std::map<TypeDeclaration *, TypeDeclaration *> array_types;
+ NodeList<Statement>::iterator type_insert_point;
+ InterfaceBlock *iface_block;
+ bool r_any_resolved;
+
+public:
+ TypeResolver();
+
+ bool apply(Stage &);
+
+private:
+ TypeDeclaration *get_or_create_array_type(TypeDeclaration &);
+ void resolve_type(TypeDeclaration *&, const std::string &, bool);
+ virtual void visit(Block &);
+ virtual void visit(BasicTypeDeclaration &);
+ virtual void visit(ImageTypeDeclaration &);
+ virtual void visit(StructDeclaration &);
+ virtual void visit(VariableDeclaration &);
+ virtual void visit(InterfaceBlock &);
+ virtual void visit(FunctionDeclaration &);