source: src/GenPoly/FindFunction.cc @ f678663e

//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// FindFunction.cc -- 
//
// Author           : Richard C. Bilson
// Created On       : Mon May 18 07:44:20 2015
// Last Modified By : Peter A. Buhr
// Last Modified On : Tue May 19 07:35:48 2015
// Update Count     : 1
//

#include "FindFunction.h"
#include "SynTree/Type.h"
#include "SynTree/Declaration.h"
#include "SynTree/Visitor.h"

namespace GenPoly {
        class FindFunction : public Mutator {
          public:
                FindFunction( std::list< FunctionType* > &functions, const TyVarMap &tyVars, bool replaceMode, FindFunctionPredicate predicate );
  
                virtual Type *mutate( FunctionType *functionType );
                virtual Type *mutate( PointerType *pointerType );
          private:
                void handleForall( const std::list< TypeDecl* > &forall );

                std::list< FunctionType* > &functions;
                TyVarMap tyVars;
                bool replaceMode;
                FindFunctionPredicate predicate;
        };

        void findFunction( Type *type, std::list< FunctionType* > &functions, const TyVarMap &tyVars, FindFunctionPredicate predicate ) {
                FindFunction finder( functions, tyVars, false, predicate );
                type->acceptMutator( finder );
        }

        void findAndReplaceFunction( Type *&type, std::list< FunctionType* > &functions, const TyVarMap &tyVars, FindFunctionPredicate predicate ) {
                FindFunction finder( functions, tyVars, true, predicate );
                type = type->acceptMutator( finder );
        }

        FindFunction::FindFunction( std::list< FunctionType* > &functions, const TyVarMap &tyVars, bool replaceMode, FindFunctionPredicate predicate )
                : functions( functions ), tyVars( tyVars ), replaceMode( replaceMode ), predicate( predicate ) {
        }

        void FindFunction::handleForall( const std::list< TypeDecl* > &forall ) {
                for ( std::list< TypeDecl* >::const_iterator i = forall.begin(); i != forall.end(); ++i ) {
                        TyVarMap::iterator var = tyVars.find( (*i)->get_name() );
                        if ( var != tyVars.end() ) {
                                tyVars.erase( var );
                        } // if
                } // for
        }

        Type * FindFunction::mutate( FunctionType *functionType ) {
                TyVarMap oldTyVars = tyVars;
                handleForall( functionType->get_forall() );
                mutateAll( functionType->get_returnVals(), *this );
                Type *ret = functionType;
                if ( predicate( functionType, tyVars ) ) {
                        functions.push_back( functionType );
                        if ( replaceMode ) {
                                ret = new FunctionType( Type::Qualifiers(), true );
                        } // if
                } // if
                tyVars = oldTyVars;
                return ret;
        }

        Type * FindFunction::mutate( PointerType *pointerType ) {
                TyVarMap oldTyVars = tyVars;
                handleForall( pointerType->get_forall() );
                Type *ret = Mutator::mutate( pointerType );
                tyVars = oldTyVars;
                return ret;
        }
} // namespace GenPoly

// Local Variables: //
// tab-width: 4 //
// mode: c++ //
// compile-command: "make install" //
// End: //