#define SASS_EXTEND
#include <vector>
#include <map>
#include <iostream>
#ifndef SASS_AST
#include "ast.hpp"
#endif
#ifndef SASS_OPERATION
#include "operation.hpp"
#endif
namespace Sass {
using namespace std;
class Context;
class Extend : public Operation_CRTP<void, Extend> {
Context& ctx;
multimap<Simple_Selector_Sequence, Selector_Combination*>& extensions;
void fallback_impl(AST_Node* n) { };
public:
Extend(Context&, multimap<Simple_Selector_Sequence, Selector_Combination*>&);
virtual ~Extend() { }
using Operation<void>::operator();
void operator()(Block*);
void operator()(Ruleset*);
void operator()(Media_Block*);
void operator()(At_Rule*);
Selector_Group* generate_extension(Selector_Combination*, Selector_Combination*);
template <typename U>
void fallback(U x) { return fallback_impl(x); }
};
}