/************************************************************************
 ************************************************************************
    FAUST compiler
	Copyright (C) 2003-2004 GRAME, Centre National de Creation Musicale
    ---------------------------------------------------------------------
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 ************************************************************************
 ************************************************************************/
 
#ifndef __EVALBOXES__
#define __EVALBOXES__
 
 
 
/** 						
 * \file eval.hh 
 *
 * Interface of the block diagram evaluator.
 *
 * A strict lambda-calculus evaluator for block diagram expressions.
 *
 **/
 
 

#include "boxes.hh"
#include "sourcereader.hh"


/**
 * Eval the definition of 'process'.
 * 
 * Eval the definition of 'process' in the environment passed as argument
 * @param eqlist the global environment (a list of definitions)
 * @return the 'process' block diagram in normal form that is
 **/
 
Tree evalprocess (Tree eqlist);


/**
 * Indicates the identifier (if any) the expression was a definition of.
 * 
 * Eval the definition of 'process' in the environment passed as argument
 * @param t the expression 
 * @param id reference to the identifier 
 * @return true if the expression t was a definition of id
 **/
 
bool 	getDefNameProperty(Tree t, Tree& id);



#endif
