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/* $Id$
*
* Copyright (C) 2007-2009 FAUmachine Team <info@faumachine.org>.
* This program is free software. You can redistribute it and/or modify it
* under the terms of the GNU General Public License, either version 2 of
* the License, or (at your option) any later version. See COPYING.
*/
#ifndef __RETURN_STAT_HPP_INCLUDED
#define __RETURN_STAT_HPP_INCLUDED
#include "frontend/ast/Expression.hpp"
#include "frontend/ast/SeqStat.hpp"
namespace ast {
//! VHDL return statement.
/** a VHDL return statement */
class ReturnStat : public SeqStat {
public:
//! c'tor
/** @param optExpr expression that determines the return value
* @param loc location of the return statement. */
ReturnStat(
Expression *optExpr,
Location loc
) : SeqStat(loc),
result(optExpr),
enclosingSubprog(NULL) {}
//! Accept a Visitor.
/** All leaf AST nodes need to implement this method.
*
* @param visitor the Visitor that can visit this node.
*/
virtual void accept(Visitor& visitor) {
visitor.visit(*this);
}
/** Put a textual representation of the AstNode on the stream.
* @param stream stream to put the textual representation to.
*/
virtual void put(std::ostream &stream) const {
stream << "RETURN";
if (this->result) {
stream << ' ' << this->result;
}
stream << ';';
}
/** result that should get returned (optional) */
Expression *result;
/** enclosing subprogram declaration */
Callable *enclosingSubprog;
protected:
/** Destructor */
virtual ~ReturnStat() {
util::MiscUtil::terminate(result);
util::MiscUtil::terminate(enclosingSubprog);
}
};
}; /* namespace ast */
#endif /* __RETURN_STAT_HPP_INCLUDED */
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