| 1 | //
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
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| 3 | //
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| 4 | // The contents of this file are covered under the licence agreement in the
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| 5 | // file "LICENCE" distributed with Cforall.
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| 6 | //
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| 7 | // ScrubTyVars.cc --
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| 8 | //
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| 9 | // Author : Richard C. Bilson
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| 10 | // Created On : Mon May 18 07:44:20 2015
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| 11 | // Last Modified By : Peter A. Buhr
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| 12 | // Last Modified On : Thu Mar 16 15:44:27 2017
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| 13 | // Update Count : 3
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| 14 | //
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| 15 |
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| 16 | #include <utility> // for pair
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| 17 |
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| 18 | #include "GenPoly.h" // for mangleType, TyVarMap, alignof...
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| 19 | #include "GenPoly/ErasableScopedMap.h" // for ErasableScopedMap<>::const_it...
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| 20 | #include "ScrubTyVars.h"
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| 21 | #include "SynTree/Declaration.h" // for TypeDecl, TypeDecl::Data, Typ...
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| 22 | #include "SynTree/Expression.h" // for Expression (ptr only), NameExpr
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| 23 | #include "SynTree/Mutator.h" // for Mutator
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| 24 | #include "SynTree/Type.h" // for PointerType, TypeInstType, Type
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| 25 |
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| 26 | namespace GenPoly {
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| 27 | Type * ScrubTyVars::postmutate( TypeInstType * typeInst ) {
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| 28 | if ( ! tyVars ) {
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| 29 | if ( typeInst->get_isFtype() ) {
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| 30 | return new PointerType{ Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) };
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| 31 | } else {
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| 32 | return new PointerType{ Type::Qualifiers(), new VoidType( typeInst->get_qualifiers() ) };
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| 33 | }
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| 34 | }
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| 35 |
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| 36 | TyVarMap::const_iterator tyVar = tyVars->find( typeInst->name );
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| 37 | if ( tyVar != tyVars->end() ) {
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| 38 | switch ( tyVar->second.kind ) {
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| 39 | case TypeDecl::Dtype:
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| 40 | case TypeDecl::Ttype:
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| 41 | return new PointerType{ Type::Qualifiers(), new VoidType( typeInst->get_qualifiers() ) };
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| 42 | case TypeDecl::Ftype:
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| 43 | return new PointerType{ Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) };
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| 44 | } // switch
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| 45 | } // if
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| 46 | return typeInst;
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| 47 | }
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| 48 |
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| 49 | Type * ScrubTyVars::mutateAggregateType( Type * ty ) {
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| 50 | if ( shouldScrub( ty ) ) {
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| 51 | return new PointerType{ Type::Qualifiers(), new VoidType( ty->get_qualifiers() ) };
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| 52 | }
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| 53 | return ty;
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| 54 | }
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| 55 |
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| 56 | Type * ScrubTyVars::postmutate( StructInstType * structInst ) {
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| 57 | return mutateAggregateType( structInst );
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| 58 | }
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| 59 |
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| 60 | Type * ScrubTyVars::postmutate( UnionInstType * unionInst ) {
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| 61 | return mutateAggregateType( unionInst );
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| 62 | }
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| 63 |
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| 64 | void ScrubTyVars::primeBaseScrub( Type * type ) {
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| 65 | // need to determine whether type needs to be scrubbed to determine whether
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| 66 | // automatic recursion is necessary
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| 67 | if ( Type * t = shouldScrub( type ) ) {
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| 68 | visit_children = false;
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| 69 | GuardValue( dynType );
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| 70 | dynType = t;
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| 71 | }
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| 72 | }
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| 73 |
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| 74 | Expression * ScrubTyVars::postmutate( SizeofExpr * szeof ) {
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| 75 | // sizeof( T ) => _sizeof_T parameter, which is the size of T
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| 76 | if ( dynType ) {
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| 77 | Expression *expr = new NameExpr( sizeofName( mangleType( dynType ) ) );
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| 78 | return expr;
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| 79 | } // if
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| 80 | return szeof;
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| 81 | }
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| 82 |
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| 83 | Expression * ScrubTyVars::postmutate( AlignofExpr * algnof ) {
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| 84 | // alignof( T ) => _alignof_T parameter, which is the alignment of T
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| 85 | if ( dynType ) {
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| 86 | Expression *expr = new NameExpr( alignofName( mangleType( dynType ) ) );
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| 87 | return expr;
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| 88 | } // if
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| 89 | return algnof;
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| 90 | }
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| 91 |
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| 92 | Type * ScrubTyVars::postmutate( PointerType * pointer ) {
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| 93 | if ( dynType ) {
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| 94 | Type * ret = dynType->acceptMutator( *visitor );
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| 95 | ret->get_qualifiers() |= pointer->get_qualifiers();
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| 96 | return ret;
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| 97 | }
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| 98 | return pointer;
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| 99 | }
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| 100 | } // namespace GenPoly
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| 101 |
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| 102 | // Local Variables: //
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| 103 | // tab-width: 4 //
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| 104 | // mode: c++ //
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| 105 | // compile-command: "make install" //
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| 106 | // End: //
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