TypeEqInfer.hxx

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#ifndef TYPEEQINFER_HXX
#define TYPEEQINFER_HXX
/**************************************************************************
 *
 * Copyright (C) 2006, Johns Hopkins University.
 * All rights reserved.
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 * without modification, are permitted provided that the following
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 *     disclaimer. 
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 *   - Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions, and the following
 *     disclaimer in the documentation and/or other materials 
 *     provided with the distribution.
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 *   - Neither the names of the copyright holders nor the names of any
 *     of any contributors may be used to endorse or promote products
 *     derived from this software without specific prior written
 *     permission. 
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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#include <iostream>
#include <sstream>
#include <libsherpa/CVector.hxx>
#include "AST.hxx"
#include "Type.hxx"
#include "TypeScheme.hxx"
#include "Typeclass.hxx"

void
addSubCst(GCPtr<AST> errAst, GCPtr<Type> t1, GCPtr<Type> t2,
          GCPtr<Constraints> tcc);

void
addEqCst(GCPtr<AST> errAst, GCPtr<Type> t1, GCPtr<Type> t2,
         GCPtr<Constraints> tcc);
        
void
addCcCst(GCPtr<AST> errAst, GCPtr<Type> t1, GCPtr<Type> t2,
         GCPtr<Constraints> tcc);
void
addPcst(GCPtr<AST> errAst, GCPtr<Type> t, GCPtr<Constraints> tcc);

bool
EqUnify(std::ostream& errStream, GCPtr<Constraints> cset, 
        GCPtr<Trail> trail);

#endif /* TYPEEQINFER_HXX */

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