#define SASS_EXPAND
#include <vector>
#include <map>
#include <iostream>
#ifndef SASS_AST
#include "ast.hpp"
#endif
#ifndef SASS_OPERATION
#include "operation.hpp"
#endif
#ifndef SASS_ENVIRONMENT
#include "environment.hpp"
#endif
namespace Sass {
using namespace std;
class Context;
class Eval;
class Contextualize;
typedef Environment<AST_Node*> Env;
struct Backtrace;
class Expand : public Operation_CRTP<Statement*, Expand> {
Context& ctx;
Eval* eval;
Contextualize* contextualize;
Env* env;
vector<Block*> block_stack;
vector<String*> property_stack;
vector<Selector*> selector_stack;
Backtrace* backtrace;
Statement* fallback_impl(AST_Node* n);
public:
Expand(Context&, Eval*, Contextualize*, Env*, Backtrace*);
virtual ~Expand() { }
using Operation<Statement*>::operator();
Statement* operator()(Block*);
Statement* operator()(Ruleset*);
Statement* operator()(Propset*);
Statement* operator()(Media_Block*);
Statement* operator()(At_Rule*);
Statement* operator()(Declaration*);
Statement* operator()(Assignment*);
Statement* operator()(Import*);
Statement* operator()(Import_Stub*);
Statement* operator()(Warning*);
Statement* operator()(Comment*);
Statement* operator()(If*);
Statement* operator()(For*);
Statement* operator()(Each*);
Statement* operator()(While*);
Statement* operator()(Return*);
Statement* operator()(Extension*);
Statement* operator()(Definition*);
Statement* operator()(Mixin_Call*);
Statement* operator()(Content*);
template <typename U>
Statement* fallback(U x) { return fallback_impl(x); }
void append_block(Block*);
multimap<Simple_Selector_Sequence, Selector_Combination*> extensions;
};
}