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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 __CONDAL_SIG_ASSIGN_HPP_INCLUDED
#define __CONDAL_SIG_ASSIGN_HPP_INCLUDED
#include "frontend/ast/ConcurrentStat.hpp"
#include "frontend/ast/SeqStat.hpp"
#include "frontend/ast/Name.hpp"
namespace ast {
//! A concurrent condal signal assign statement.
/** This class represents a concurent condal signal assign statement or
* a concurrent selected signal assign statement.
* It can be assumed, that the correct if/case-statements have been
* produced, which reflect the concurrent statement.
*
* @TODO options and guarded, whereas guarded needs symbol analysis
* before it can be transformed into guard statements.
*/
class CondalSigAssign : public ConcurrentStat {
public:
//! c'tor
/** @param trg target of the signal assignment.
* @param assignTree the sequential statements that reflect
* the semantics of the CondalSigAssign. Should be either
* an SigAssignStat or a probably nested IfStat with
* SigAssignStats as it's actions.
* @param loc location of the assign symbol.
*/
CondalSigAssign(
Name* trg,
SeqStat* assignTree,
Location loc
) : ConcurrentStat(loc),
target(trg),
assignStat(assignTree) {}
//! 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 << this->target << " <= " << this->assignStat << ';';
}
/** target of the signal assignment */
Expression* target;
/** Either an IfStat or a SigAssignStat. The signal assignment
* should get sequentialized during parsing already.
*/
SeqStat* assignStat;
protected:
/** Destructor */
virtual ~CondalSigAssign() {
util::MiscUtil::terminate(target);
util::MiscUtil::terminate(assignStat);
}
};
}; /* namespace ast */
#endif /* __CONDAL_SIG_ASSIGN_HPP_INCLUDED */
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