| 1 | //
|
|---|
| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
|
|---|
| 3 | //
|
|---|
| 4 | // The contents of this file are covered under the licence agreement in the
|
|---|
| 5 | // file "LICENCE" distributed with Cforall.
|
|---|
| 6 | //
|
|---|
| 7 | // ScrubTyVars.cc --
|
|---|
| 8 | //
|
|---|
| 9 | // Author : Richard C. Bilson
|
|---|
| 10 | // Created On : Mon May 18 07:44:20 2015
|
|---|
| 11 | // Last Modified By : Peter A. Buhr
|
|---|
| 12 | // Last Modified On : Thu Mar 16 15:44:27 2017
|
|---|
| 13 | // Update Count : 3
|
|---|
| 14 | //
|
|---|
| 15 |
|
|---|
| 16 | #include <utility> // for pair
|
|---|
| 17 |
|
|---|
| 18 | #include "GenPoly.h" // for mangleType, TyVarMap, alignof...
|
|---|
| 19 | #include "GenPoly/ErasableScopedMap.h" // for ErasableScopedMap<>::const_it...
|
|---|
| 20 | #include "ScrubTyVars.h"
|
|---|
| 21 | #include "SynTree/Declaration.h" // for TypeDecl, TypeDecl::Data, Typ...
|
|---|
| 22 | #include "SynTree/Expression.h" // for Expression (ptr only), NameExpr
|
|---|
| 23 | #include "SynTree/Mutator.h" // for Mutator
|
|---|
| 24 | #include "SynTree/Type.h" // for PointerType, TypeInstType, Type
|
|---|
| 25 |
|
|---|
| 26 | namespace GenPoly {
|
|---|
| 27 | Type * ScrubTyVars::postmutate( TypeInstType * typeInst ) {
|
|---|
| 28 | if ( ! tyVars ) {
|
|---|
| 29 | if ( typeInst->get_isFtype() ) {
|
|---|
| 30 | delete typeInst;
|
|---|
| 31 | return new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) );
|
|---|
| 32 | } else {
|
|---|
| 33 | PointerType * ret = new PointerType( Type::Qualifiers(), new VoidType( typeInst->get_qualifiers() ) );
|
|---|
| 34 | delete typeInst;
|
|---|
| 35 | return ret;
|
|---|
| 36 | }
|
|---|
| 37 | }
|
|---|
| 38 |
|
|---|
| 39 | TyVarMap::const_iterator tyVar = tyVars->find( typeInst->name );
|
|---|
| 40 | if ( tyVar != tyVars->end() ) {
|
|---|
| 41 | switch ( tyVar->second.kind ) {
|
|---|
| 42 | case TypeDecl::Dtype:
|
|---|
| 43 | case TypeDecl::Ttype:
|
|---|
| 44 | {
|
|---|
| 45 | PointerType * ret = new PointerType( Type::Qualifiers(), new VoidType( typeInst->get_qualifiers() ) );
|
|---|
| 46 | delete typeInst;
|
|---|
| 47 | return ret;
|
|---|
| 48 | }
|
|---|
| 49 | case TypeDecl::Ftype:
|
|---|
| 50 | delete typeInst;
|
|---|
| 51 | return new PointerType( Type::Qualifiers(), new FunctionType( Type::Qualifiers(), true ) );
|
|---|
| 52 | default:
|
|---|
| 53 | assertf(false, "Unhandled tyvar kind: %d", tyVar->second.kind);
|
|---|
| 54 | } // switch
|
|---|
| 55 | } // if
|
|---|
| 56 | return typeInst;
|
|---|
| 57 | }
|
|---|
| 58 |
|
|---|
| 59 | Type * ScrubTyVars::mutateAggregateType( Type * ty ) {
|
|---|
| 60 | if ( shouldScrub( ty ) ) {
|
|---|
| 61 | PointerType * ret = new PointerType( Type::Qualifiers(), new VoidType( ty->get_qualifiers() ) );
|
|---|
| 62 | delete ty;
|
|---|
| 63 | return ret;
|
|---|
| 64 | }
|
|---|
| 65 | return ty;
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 | Type * ScrubTyVars::postmutate( StructInstType * structInst ) {
|
|---|
| 69 | return mutateAggregateType( structInst );
|
|---|
| 70 | }
|
|---|
| 71 |
|
|---|
| 72 | Type * ScrubTyVars::postmutate( UnionInstType * unionInst ) {
|
|---|
| 73 | return mutateAggregateType( unionInst );
|
|---|
| 74 | }
|
|---|
| 75 |
|
|---|
| 76 | void ScrubTyVars::primeBaseScrub( Type * type ) {
|
|---|
| 77 | // need to determine whether type needs to be scrubbed to determine whether
|
|---|
| 78 | // automatic recursion is necessary
|
|---|
| 79 | if ( Type * t = shouldScrub( type ) ) {
|
|---|
| 80 | visit_children = false;
|
|---|
| 81 | GuardValue( dynType );
|
|---|
| 82 | dynType = t;
|
|---|
| 83 | }
|
|---|
| 84 | }
|
|---|
| 85 |
|
|---|
| 86 | Expression * ScrubTyVars::postmutate( SizeofExpr * szeof ) {
|
|---|
| 87 | // sizeof( T ) => _sizeof_T parameter, which is the size of T
|
|---|
| 88 | if ( dynType ) {
|
|---|
| 89 | Expression *expr = new NameExpr( sizeofName( mangleType( dynType ) ) );
|
|---|
| 90 | return expr;
|
|---|
| 91 | } // if
|
|---|
| 92 | return szeof;
|
|---|
| 93 | }
|
|---|
| 94 |
|
|---|
| 95 | Expression * ScrubTyVars::postmutate( AlignofExpr * algnof ) {
|
|---|
| 96 | // alignof( T ) => _alignof_T parameter, which is the alignment of T
|
|---|
| 97 | if ( dynType ) {
|
|---|
| 98 | Expression *expr = new NameExpr( alignofName( mangleType( dynType ) ) );
|
|---|
| 99 | return expr;
|
|---|
| 100 | } // if
|
|---|
| 101 | return algnof;
|
|---|
| 102 | }
|
|---|
| 103 |
|
|---|
| 104 | Type * ScrubTyVars::postmutate( PointerType * pointer ) {
|
|---|
| 105 | if ( dynType ) {
|
|---|
| 106 | Type * ret = dynType->acceptMutator( *visitor );
|
|---|
| 107 | ret->get_qualifiers() |= pointer->get_qualifiers();
|
|---|
| 108 | pointer->base = nullptr;
|
|---|
| 109 | delete pointer;
|
|---|
| 110 | return ret;
|
|---|
| 111 | }
|
|---|
| 112 | return pointer;
|
|---|
| 113 | }
|
|---|
| 114 | } // namespace GenPoly
|
|---|
| 115 |
|
|---|
| 116 | // Local Variables: //
|
|---|
| 117 | // tab-width: 4 //
|
|---|
| 118 | // mode: c++ //
|
|---|
| 119 | // compile-command: "make install" //
|
|---|
| 120 | // End: //
|
|---|
