visitor.hpp

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#pragma once
 
#include "ast/ast.hpp"
#include "util.hpp"
 
namespace yume {
class Visitor;
namespace ast {
class AST;
}
} // namespace yume
 
namespace yume {
class Visitor {
public:
  Visitor() = default;
  virtual ~Visitor() = default;
  Visitor(Visitor&) = delete;
  Visitor(Visitor&&) = default;
  auto operator=(Visitor&) -> Visitor& = delete;
  auto operator=(Visitor&&) -> Visitor& = default;
 
  virtual auto visit(const ast::AST&, string_view) -> Visitor& = 0;
  virtual auto visit(std::nullptr_t, string_view) -> Visitor& = 0;
  virtual auto visit(const string&, string_view) -> Visitor& = 0;
};
} // namespace yume