| 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 | // AdjustExprType.cc -- |
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| 8 | // |
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| 9 | // Author : Richard C. Bilson |
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| 10 | // Created On : Sat May 16 23:41:42 2015 |
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| 11 | // Last Modified By : Peter A. Buhr |
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| 12 | // Last Modified On : Wed Mar 2 17:34:53 2016 |
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| 13 | // Update Count : 4 |
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| 14 | // |
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| 15 | |
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| 16 | #include "Common/PassVisitor.h" |
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| 17 | #include "SymTab/Indexer.h" // for Indexer |
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| 18 | #include "SynTree/Declaration.h" // for TypeDecl, TypeDecl::Kind::Ftype |
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| 19 | #include "SynTree/Mutator.h" // for Mutator |
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| 20 | #include "SynTree/Type.h" // for PointerType, TypeInstType, Type |
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| 21 | #include "TypeEnvironment.h" // for EqvClass, TypeEnvironment |
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| 22 | |
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| 23 | namespace ResolvExpr { |
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| 24 | class AdjustExprType : public WithShortCircuiting { |
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| 25 | public: |
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| 26 | AdjustExprType( const TypeEnvironment &env, const SymTab::Indexer &indexer ); |
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| 27 | void premutate( VoidType * ) { visit_children = false; } |
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| 28 | void premutate( BasicType * ) { visit_children = false; } |
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| 29 | void premutate( PointerType * ) { visit_children = false; } |
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| 30 | void premutate( FunctionType * ) { visit_children = false; } |
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| 31 | void premutate( StructInstType * ) { visit_children = false; } |
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| 32 | void premutate( UnionInstType * ) { visit_children = false; } |
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| 33 | void premutate( EnumInstType * ) { visit_children = false; } |
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| 34 | void premutate( TraitInstType * ) { visit_children = false; } |
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| 35 | void premutate( TypeInstType * ) { visit_children = false; } |
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| 36 | void premutate( TupleType * ) { visit_children = false; } |
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| 37 | void premutate( VarArgsType * ) { visit_children = false; } |
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| 38 | void premutate( ZeroType * ) { visit_children = false; } |
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| 39 | void premutate( OneType * ) { visit_children = false; } |
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| 40 | |
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| 41 | Type * postmutate( ArrayType *arrayType ); |
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| 42 | Type * postmutate( FunctionType *functionType ); |
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| 43 | Type * postmutate( TypeInstType *aggregateUseType ); |
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| 44 | |
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| 45 | private: |
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| 46 | const TypeEnvironment &env; |
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| 47 | const SymTab::Indexer &indexer; |
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| 48 | }; |
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| 49 | |
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| 50 | void adjustExprType( Type *&type, const TypeEnvironment &env, const SymTab::Indexer &indexer ) { |
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| 51 | PassVisitor<AdjustExprType> adjuster( env, indexer ); |
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| 52 | Type *newType = type->acceptMutator( adjuster ); |
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| 53 | type = newType; |
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| 54 | } |
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| 55 | |
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| 56 | AdjustExprType::AdjustExprType( const TypeEnvironment &env, const SymTab::Indexer &indexer ) |
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| 57 | : env( env ), indexer( indexer ) { |
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| 58 | } |
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| 59 | |
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| 60 | Type * AdjustExprType::postmutate( ArrayType * arrayType ) { |
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| 61 | // need to recursively mutate the base type in order for multi-dimensional arrays to work. |
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| 62 | PointerType *pointerType = new PointerType( arrayType->get_qualifiers(), arrayType->base ); |
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| 63 | arrayType->base = nullptr; |
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| 64 | delete arrayType; |
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| 65 | return pointerType; |
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| 66 | } |
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| 67 | |
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| 68 | Type * AdjustExprType::postmutate( FunctionType * functionType ) { |
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| 69 | return new PointerType( Type::Qualifiers(), functionType ); |
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| 70 | } |
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| 71 | |
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| 72 | Type * AdjustExprType::postmutate( TypeInstType * typeInst ) { |
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| 73 | EqvClass eqvClass; |
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| 74 | if ( env.lookup( typeInst->get_name(), eqvClass ) ) { |
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| 75 | if ( eqvClass.data.kind == TypeDecl::Ftype ) { |
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| 76 | PointerType *pointerType = new PointerType( Type::Qualifiers(), typeInst ); |
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| 77 | return pointerType; |
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| 78 | } |
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| 79 | } else if ( NamedTypeDecl *ntDecl = indexer.lookupType( typeInst->get_name() ) ) { |
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| 80 | if ( TypeDecl *tyDecl = dynamic_cast< TypeDecl* >( ntDecl ) ) { |
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| 81 | if ( tyDecl->get_kind() == TypeDecl::Ftype ) { |
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| 82 | PointerType *pointerType = new PointerType( Type::Qualifiers(), typeInst ); |
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| 83 | return pointerType; |
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| 84 | } // if |
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| 85 | } // if |
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| 86 | } // if |
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| 87 | return typeInst; |
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| 88 | } |
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| 89 | } // namespace ResolvExpr |
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| 90 | |
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| 91 | // Local Variables: // |
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| 92 | // tab-width: 4 // |
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| 93 | // mode: c++ // |
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| 94 | // compile-command: "make install" // |
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| 95 | // End: // |
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