| 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::mutate( TypeInstType *typeInst ) {
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| 28 | if ( ! tyVars ) {
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| 29 | if ( typeInst->get_isFtype() ) {
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| 30 | delete typeInst;
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| 31 | return new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) );
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| 32 | } else {
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| 33 | PointerType *ret = new PointerType( Type::Qualifiers(), new VoidType( typeInst->get_qualifiers() ) );
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| 34 | delete typeInst;
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| 35 | return ret;
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| 36 | }
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| 37 | }
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| 38 |
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| 39 | TyVarMap::const_iterator tyVar = tyVars->find( typeInst->get_name() );
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| 40 | if ( tyVar != tyVars->end() ) {
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| 41 | switch ( tyVar->second.kind ) {
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| 42 | case TypeDecl::Any:
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| 43 | case TypeDecl::Dtype:
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| 44 | case TypeDecl::Ttype:
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| 45 | {
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| 46 | PointerType *ret = new PointerType( Type::Qualifiers(), new VoidType( typeInst->get_qualifiers() ) );
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| 47 | delete typeInst;
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| 48 | return ret;
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| 49 | }
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| 50 | case TypeDecl::Ftype:
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| 51 | delete typeInst;
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| 52 | return new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) );
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| 53 | } // switch
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| 54 | } // if
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| 55 | return typeInst;
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| 56 | }
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| 57 |
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| 58 | Type * ScrubTyVars::mutateAggregateType( Type *ty ) {
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| 59 | if ( shouldScrub( ty ) ) {
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| 60 | PointerType *ret = new PointerType( Type::Qualifiers(), new VoidType( ty->get_qualifiers() ) );
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| 61 | delete ty;
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| 62 | return ret;
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| 63 | }
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| 64 | return ty;
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| 65 | }
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| 66 |
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| 67 | Type * ScrubTyVars::mutate( StructInstType *structInst ) {
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| 68 | return mutateAggregateType( structInst );
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| 69 | }
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| 70 |
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| 71 | Type * ScrubTyVars::mutate( UnionInstType *unionInst ) {
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| 72 | return mutateAggregateType( unionInst );
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| 73 | }
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| 74 |
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| 75 | Expression * ScrubTyVars::mutate( SizeofExpr *szeof ) {
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| 76 | // sizeof( T ) => _sizeof_T parameter, which is the size of T
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| 77 | if ( Type *dynType = shouldScrub( szeof->get_type() ) ) {
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| 78 | Expression *expr = new NameExpr( sizeofName( mangleType( dynType ) ) );
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| 79 | return expr;
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| 80 | } else {
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| 81 | return Mutator::mutate( szeof );
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| 82 | } // if
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| 83 | }
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| 84 |
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| 85 | Expression * ScrubTyVars::mutate( AlignofExpr *algnof ) {
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| 86 | // alignof( T ) => _alignof_T parameter, which is the alignment of T
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| 87 | if ( Type *dynType = shouldScrub( algnof->get_type() ) ) {
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| 88 | Expression *expr = new NameExpr( alignofName( mangleType( dynType ) ) );
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| 89 | return expr;
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| 90 | } else {
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| 91 | return Mutator::mutate( algnof );
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| 92 | } // if
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| 93 | }
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| 94 |
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| 95 | Type * ScrubTyVars::mutate( PointerType *pointer ) {
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| 96 | // // special case of shouldScrub that takes all TypeInstType pointer bases, even if they're not dynamic
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| 97 | // Type *base = pointer->get_base();
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| 98 | // Type *dynType = 0;
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| 99 | // if ( dynamicOnly ) {
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| 100 | // if ( TypeInstType *typeInst = dynamic_cast< TypeInstType* >( base ) ) {
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| 101 | // if ( tyVars.find( typeInst->get_name() ) != tyVars.end() ) { dynType = typeInst; }
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| 102 | // } else {
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| 103 | // dynType = isDynType( base, tyVars );
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| 104 | // }
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| 105 | // } else {
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| 106 | // dynType = isPolyType( base, tyVars );
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| 107 | // }
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| 108 | // if ( dynType ) {
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| 109 | if ( Type *dynType = shouldScrub( pointer->get_base() ) ) {
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| 110 | Type *ret = dynType->acceptMutator( *this );
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| 111 | ret->get_qualifiers() |= pointer->get_qualifiers();
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| 112 | pointer->set_base( 0 );
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| 113 | delete pointer;
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| 114 | return ret;
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| 115 | }
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| 116 | return Mutator::mutate( pointer );
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| 117 | }
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| 118 | } // namespace GenPoly
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| 119 |
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| 120 | // Local Variables: //
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| 121 | // tab-width: 4 //
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| 122 | // mode: c++ //
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| 123 | // compile-command: "make install" //
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| 124 | // End: //
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