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/* $Id$
*
* EndTransfer: free space for transfer region again.
*
* 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 __END_TRANSFER_HPP_INCLUDED
#define __END_TRANSFER_HPP_INCLUDED
#include "intermediate/opcodes/OpCode.hpp"
#include "intermediate/operands/Reference.hpp"
#include "intermediate/operands/ImmediateOperand.hpp"
namespace intermediate {
//! free space for the transfer region.
/** This opcode will free space for the named transfer region.
*
* Read operands: src, cleanupStack
* Write operands: no publicly visible operands.
*
* Operation:
* Free space for the transfer section of component src at an
* implementation defined location, in case cleanupStack is set.
*
* Errors:
* It is an error if EndTransfer wasn't called after BeginTransfer was
* called from within the same text segment.
* It is an error if EndTransfer references a different component
* than the preceding BeginTransfer call.
*/
class EndTransfer : public OpCode {
public:
//! c'tor
/** @param source reference to a component denoting the transfer
* section.
* @param cleanup when executing end transfer, cleanup the
* stack entries or not? (useful for _create calls,
* which create processes that need the parent stack to
* be present).
*/
EndTransfer(
Reference *source,
ImmediateOperand *cleanup
) : src(source), cleanupStack(cleanup) {}
//! 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);
}
//! references a component (denoting the transfer region of it)
Reference *src;
//! cleanup the stack
ImmediateOperand *cleanupStack;
protected:
virtual ~EndTransfer() {
util::MiscUtil::terminate(this->src);
util::MiscUtil::terminate(this->cleanupStack);
}
};
}; /* namespace intermediate */
#endif /* __END_TRANSFER_HPP_INCLUDED */
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