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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 __FUNCTION_DECLARATION_HPP_INCLUDED
#define __FUNCTION_DECLARATION_HPP_INCLUDED
#include "frontend/ast/Callable.hpp"
#include "frontend/ast/SubtypeIndication.hpp"
#include "frontend/misc/BuiltinFunction.hpp"
#include "frontend/visitor/GCBuiltins.hpp"
namespace ast {
/** declaration of a VHDL function */
class FunctionDeclaration : public Callable {
public:
//! c'tor
/** @param declName name of the function.
* @param args interface (arguments the function takes).
* @param body corresponding SubprogBody, if any.
* @param returnT return type identifier of the function.
* @param pureFunc is this function declared as pure?
* @param loc location of the FunctionDeclaration.
*/
FunctionDeclaration(
std::string *declName,
std::list<ValDeclaration*> *args,
SubtypeIndication *returnT,
bool pureFunc,
Location loc
) : Callable(declName, args,
SubprogBody::PROG_KIND_FUNCTION, loc),
returnType(returnT),
builtin(NULL),
gcBuiltin(NULL),
isPure(pureFunc),
isBuiltin(false) {}
//! 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 {
assert(this->name);
stream << "FUNCTION " << *this->name << '(';
util::MiscUtil::listPut(this->arguments, stream, ", ");
stream << ") RETURN " << this->returnType << ';';
}
/** return the name, that the intermediate code should use.
* Overloaded from SymbolDeclaration, since the path name
* wouldn't be right for builtins.
*/
virtual std::string getICName(void) const {
if (this->isBuiltin) {
assert(this->name != NULL);
return *this->name;
}
// not a bultin, reuse SymbolDeclaration's impl.
return SymbolDeclaration::getICName();
}
/** return type of the function */
SubtypeIndication *returnType;
/** builtin function for constant propagation or NULL if not a
* builtin. */
BuiltinFunction *builtin;
/** inline intermediate code generation class or NULL if not a
* builtin */
GCBuiltins *gcBuiltin;
/** is the function declared as pure */
bool isPure;
/** is this a builtin function? */
bool isBuiltin;
protected:
/** Destructor */
virtual ~FunctionDeclaration() {
util::MiscUtil::terminate(this->returnType);
delete this->builtin;
this->builtin = NULL;
delete this->gcBuiltin;
this->gcBuiltin = NULL;
}
};
};
#endif /* __FUNCTION_DECLARATION_HPP_INCLUDED */
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