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operation.hpp
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#ifndef SASS_OPERATION_H
#define SASS_OPERATION_H
#include <iostream>
#include <typeinfo>
#include "ast_fwd_decl.hpp"
namespace Sass {
using namespace std;
template<typename T>
class Operation {
public:
virtual T operator()(AST_Node* x) = 0;
virtual ~Operation() { }
// statements
virtual T operator()(Block* x) = 0;
virtual T operator()(Ruleset* x) = 0;
virtual T operator()(Propset* x) = 0;
virtual T operator()(Bubble* x) = 0;
virtual T operator()(Feature_Block* x) = 0;
virtual T operator()(Media_Block* x) = 0;
virtual T operator()(At_Root_Block* x) = 0;
virtual T operator()(At_Rule* x) = 0;
virtual T operator()(Keyframe_Rule* x) = 0;
virtual T operator()(Declaration* x) = 0;
virtual T operator()(Assignment* x) = 0;
virtual T operator()(Import* x) = 0;
virtual T operator()(Import_Stub* x) = 0;
virtual T operator()(Warning* x) = 0;
virtual T operator()(Error* x) = 0;
virtual T operator()(Debug* x) = 0;
virtual T operator()(Comment* x) = 0;
virtual T operator()(If* x) = 0;
virtual T operator()(For* x) = 0;
virtual T operator()(Each* x) = 0;
virtual T operator()(While* x) = 0;
virtual T operator()(Return* x) = 0;
virtual T operator()(Content* x) = 0;
virtual T operator()(Extension* x) = 0;
virtual T operator()(Definition* x) = 0;
virtual T operator()(Mixin_Call* x) = 0;
// expressions
virtual T operator()(List* x) = 0;
virtual T operator()(Map* x) = 0;
virtual T operator()(Binary_Expression* x) = 0;
virtual T operator()(Unary_Expression* x) = 0;
virtual T operator()(Function_Call* x) = 0;
virtual T operator()(Function_Call_Schema* x) = 0;
virtual T operator()(Variable* x) = 0;
virtual T operator()(Textual* x) = 0;
virtual T operator()(Number* x) = 0;
virtual T operator()(Color* x) = 0;
virtual T operator()(Boolean* x) = 0;
virtual T operator()(String_Schema* x) = 0;
virtual T operator()(String_Constant* x) = 0;
virtual T operator()(Feature_Query* x) = 0;
virtual T operator()(Feature_Query_Condition* x)= 0;
virtual T operator()(Media_Query* x) = 0;
virtual T operator()(Media_Query_Expression* x) = 0;
virtual T operator()(At_Root_Expression* x) = 0;
virtual T operator()(Null* x) = 0;
virtual T operator()(Parent_Selector* x) = 0;
// parameters and arguments
virtual T operator()(Parameter* x) = 0;
virtual T operator()(Parameters* x) = 0;
virtual T operator()(Argument* x) = 0;
virtual T operator()(Arguments* x) = 0;
// selectors
virtual T operator()(Selector_Schema* x) = 0;
virtual T operator()(Selector_Reference* x) = 0;
virtual T operator()(Selector_Placeholder* x) = 0;
virtual T operator()(Type_Selector* x) = 0;
virtual T operator()(Selector_Qualifier* x) = 0;
virtual T operator()(Attribute_Selector* x) = 0;
virtual T operator()(Pseudo_Selector* x) = 0;
virtual T operator()(Wrapped_Selector* x) = 0;
virtual T operator()(Compound_Selector* x) = 0;
virtual T operator()(Complex_Selector* x) = 0;
virtual T operator()(Selector_List* x) = 0;
template <typename U>
T fallback(U x) { return T(); }
};
template <typename T, typename D>
class Operation_CRTP : public Operation<T> {
public:
virtual T operator()(AST_Node* x) { return static_cast<D*>(this)->fallback(x); }
virtual ~Operation_CRTP() = 0;
// statements
virtual T operator()(Block* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Ruleset* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Propset* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Bubble* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Feature_Block* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Media_Block* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(At_Root_Block* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(At_Rule* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Keyframe_Rule* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Declaration* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Assignment* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Import* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Import_Stub* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Warning* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Error* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Debug* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Comment* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(If* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(For* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Each* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(While* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Return* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Content* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Extension* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Definition* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Mixin_Call* x) { return static_cast<D*>(this)->fallback(x); }
// expressions
virtual T operator()(List* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Map* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Binary_Expression* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Unary_Expression* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Function_Call* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Function_Call_Schema* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Variable* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Textual* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Number* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Color* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Boolean* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(String_Schema* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(String_Constant* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Feature_Query* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Feature_Query_Condition* x){ return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Media_Query* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Media_Query_Expression* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(At_Root_Expression* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Null* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Parent_Selector* x) { return static_cast<D*>(this)->fallback(x); }
// parameters and arguments
virtual T operator()(Parameter* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Parameters* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Argument* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Arguments* x) { return static_cast<D*>(this)->fallback(x); }
// selectors
virtual T operator()(Selector_Schema* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Selector_Reference* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Selector_Placeholder* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Type_Selector* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Selector_Qualifier* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Attribute_Selector* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Pseudo_Selector* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Wrapped_Selector* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Compound_Selector* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Complex_Selector* x) { return static_cast<D*>(this)->fallback(x); }
virtual T operator()(Selector_List* x) { return static_cast<D*>(this)->fallback(x); }
template <typename U>
T fallback(U x) { return T(); }
};
template<typename T, typename D>
inline Operation_CRTP<T, D>::~Operation_CRTP() { }
}
#endif