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/* $Id$
*
* GetParam: Get a parameter in the transfer region.
*
* Copyright (C) 2008-2009 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 __GET_PARAM_HPP_INCLUDED
#define __GET_PARAM_HPP_INCLUDED
#include "intermediate/opcodes/OpCode.hpp"
#include "intermediate/operands/Reference.hpp"
namespace intermediate {
//! Copy slot in the transfer region of a container to dest.
/** This opcode will copy source in the transfer slot of container
* container into the dst operand.
*
* Read Operands: cnt, src
* Write operands: dst
*
* Operation:
* copy src residing in the slot defined by cnt/src to dst.
*
* Errors:
* GetParam must be evaluated after a corresponding BeginTransfer
* statement in the same text segment before a corresponding
* EndTransfer statement.
*
* The Reference to the container must match the Reference to
* BeginTransfer.
*
* Hints:
* Useful for OUT/INOUT variable parameters, to access the result.
* Should not be annotated foreign, as this would be very hard to
* map to a native C call for example.
*/
class GetParam : public OpCode {
public:
//! c'tor
/** @param source source operand living in container
* @param cnt Reference to the container
* @param dest destination operand.
*/
GetParam(
Reference *source,
Reference *cnt,
Operand *dest
) : src(source),
container(cnt),
dst(dest) {}
//! Accept a Visitor.
/** All intermediate code nodes need to implement this method.
*
* @param v the Visitor that can visit this node.
*/
virtual void accept(Visitor& v) {
v.visit(*this);
}
//! source operand (item in transfer segment of container)
Reference *src;
//! referenced container
Reference *container;
//! destination operand.
Operand *dst;
protected:
virtual ~GetParam() {
util::MiscUtil::terminate(this->src);
util::MiscUtil::terminate(this->container);
util::MiscUtil::terminate(this->dst);
}
};
}; /* namespace intermediate */
#endif /* __GET_PARAM_HPP_INCLUDED */
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