source: src/GenPoly/ScrubTyVars.cc @ bcda04c

//
// 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.
//
// ScrubTyVars.cc --
//
// Author           : Richard C. Bilson
// Created On       : Mon May 18 07:44:20 2015
// Last Modified By : Peter A. Buhr
// Last Modified On : Thu Mar 16 15:44:27 2017
// Update Count     : 3
//

#include <sstream>
#include <string>

#include "GenPoly.h"
#include "ScrubTyVars.h"

#include "SynTree/Mutator.h"
#include "SynTree/Type.h"
#include "SynTree/Expression.h"

namespace GenPoly {
        Type * ScrubTyVars::mutate( TypeInstType *typeInst ) {
                if ( ! tyVars ) {
                        if ( typeInst->get_isFtype() ) {
                                delete typeInst;
                                return new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) );
                        } else {
                                PointerType *ret = new PointerType( Type::Qualifiers(), new VoidType( typeInst->get_qualifiers() ) );
                                delete typeInst;
                                return ret;
                        }
                }

                TyVarMap::const_iterator tyVar = tyVars->find( typeInst->get_name() );
                if ( tyVar != tyVars->end() ) {
                        switch ( tyVar->second.kind ) {
                          case TypeDecl::Any:
                          case TypeDecl::Dtype:
                          case TypeDecl::Ttype:
                                {
                                        PointerType *ret = new PointerType( Type::Qualifiers(), new VoidType( typeInst->get_qualifiers() ) );
                                        delete typeInst;
                                        return ret;
                                }
                          case TypeDecl::Ftype:
                                delete typeInst;
                                return new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) );
                        } // switch
                } // if
                return typeInst;
        }

        Type * ScrubTyVars::mutateAggregateType( Type *ty ) {
                if ( shouldScrub( ty ) ) {
                        PointerType *ret = new PointerType( Type::Qualifiers(), new VoidType( ty->get_qualifiers() ) );
                        delete ty;
                        return ret;
                }
                return ty;
        }

        Type * ScrubTyVars::mutate( StructInstType *structInst ) {
                return mutateAggregateType( structInst );
        }

        Type * ScrubTyVars::mutate( UnionInstType *unionInst ) {
                return mutateAggregateType( unionInst );
        }

        Expression * ScrubTyVars::mutate( SizeofExpr *szeof ) {
                // sizeof( T ) => _sizeof_T parameter, which is the size of T
                if ( Type *dynType = shouldScrub( szeof->get_type() ) ) {
                        Expression *expr = new NameExpr( sizeofName( mangleType( dynType ) ) );
                        return expr;
                } else {
                        return Mutator::mutate( szeof );
                } // if
        }

        Expression * ScrubTyVars::mutate( AlignofExpr *algnof ) {
                // alignof( T ) => _alignof_T parameter, which is the alignment of T
                if ( Type *dynType = shouldScrub( algnof->get_type() ) ) {
                        Expression *expr = new NameExpr( alignofName( mangleType( dynType ) ) );
                        return expr;
                } else {
                        return Mutator::mutate( algnof );
                } // if
        }

        Type * ScrubTyVars::mutate( PointerType *pointer ) {
//              // special case of shouldScrub that takes all TypeInstType pointer bases, even if they're not dynamic
//              Type *base = pointer->get_base();
//              Type *dynType = 0;
//              if ( dynamicOnly ) {
//                      if ( TypeInstType *typeInst = dynamic_cast< TypeInstType* >( base ) ) {
//                              if ( tyVars.find( typeInst->get_name() ) != tyVars.end() ) { dynType = typeInst; }
//                      } else {
//                              dynType = isDynType( base, tyVars );
//                      }
//              } else {
//                      dynType = isPolyType( base, tyVars );
//              }
//              if ( dynType ) {
                if ( Type *dynType = shouldScrub( pointer->get_base() ) ) {
                        Type *ret = dynType->acceptMutator( *this );
                        ret->get_qualifiers() |= pointer->get_qualifiers();
                        pointer->set_base( 0 );
                        delete pointer;
                        return ret;
                }
                return Mutator::mutate( pointer );
        }
} // namespace GenPoly

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