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 | // AdjustExprType_old.cc -- |
---|
8 | // |
---|
9 | // Author : Richard C. Bilson |
---|
10 | // Created On : Sat May 16 23:41:42 2015 |
---|
11 | // Last Modified By : Peter A. Buhr |
---|
12 | // Last Modified On : Wed Mar 2 17:34:53 2016 |
---|
13 | // Update Count : 4 |
---|
14 | // |
---|
15 | |
---|
16 | #include "AST/Node.hpp" |
---|
17 | #include "AST/Pass.hpp" |
---|
18 | #include "AST/SymbolTable.hpp" |
---|
19 | #include "AST/Type.hpp" |
---|
20 | #include "AST/TypeEnvironment.hpp" |
---|
21 | #include "Common/PassVisitor.h" |
---|
22 | #include "SymTab/Indexer.h" // for Indexer |
---|
23 | #include "SynTree/Declaration.h" // for TypeDecl, TypeDecl::Kind::Ftype |
---|
24 | #include "SynTree/Mutator.h" // for Mutator |
---|
25 | #include "SynTree/Type.h" // for PointerType, TypeInstType, Type |
---|
26 | #include "TypeEnvironment.h" // for EqvClass, TypeEnvironment |
---|
27 | |
---|
28 | namespace ResolvExpr { |
---|
29 | |
---|
30 | namespace { |
---|
31 | class AdjustExprType_old final : public WithShortCircuiting { |
---|
32 | public: |
---|
33 | AdjustExprType_old( const TypeEnvironment & env, const SymTab::Indexer & indexer ); |
---|
34 | void premutate( VoidType * ) { visit_children = false; } |
---|
35 | void premutate( BasicType * ) { visit_children = false; } |
---|
36 | void premutate( PointerType * ) { visit_children = false; } |
---|
37 | void premutate( ArrayType * ) { visit_children = false; } |
---|
38 | void premutate( FunctionType * ) { visit_children = false; } |
---|
39 | void premutate( StructInstType * ) { visit_children = false; } |
---|
40 | void premutate( UnionInstType * ) { visit_children = false; } |
---|
41 | void premutate( EnumInstType * ) { visit_children = false; } |
---|
42 | void premutate( TraitInstType * ) { visit_children = false; } |
---|
43 | void premutate( TypeInstType * ) { visit_children = false; } |
---|
44 | void premutate( TupleType * ) { visit_children = false; } |
---|
45 | void premutate( VarArgsType * ) { visit_children = false; } |
---|
46 | void premutate( ZeroType * ) { visit_children = false; } |
---|
47 | void premutate( OneType * ) { visit_children = false; } |
---|
48 | |
---|
49 | Type * postmutate( ArrayType * arrayType ); |
---|
50 | Type * postmutate( FunctionType * functionType ); |
---|
51 | Type * postmutate( TypeInstType * aggregateUseType ); |
---|
52 | |
---|
53 | private: |
---|
54 | const TypeEnvironment & env; |
---|
55 | const SymTab::Indexer & indexer; |
---|
56 | }; |
---|
57 | |
---|
58 | AdjustExprType_old::AdjustExprType_old( const TypeEnvironment &env, const SymTab::Indexer &indexer ) |
---|
59 | : env( env ), indexer( indexer ) { |
---|
60 | } |
---|
61 | |
---|
62 | Type * AdjustExprType_old::postmutate( ArrayType * arrayType ) { |
---|
63 | PointerType * pointerType = new PointerType{ arrayType->get_qualifiers(), arrayType->base }; |
---|
64 | arrayType->base = nullptr; |
---|
65 | delete arrayType; |
---|
66 | return pointerType; |
---|
67 | } |
---|
68 | |
---|
69 | Type * AdjustExprType_old::postmutate( FunctionType * functionType ) { |
---|
70 | return new PointerType{ Type::Qualifiers(), functionType }; |
---|
71 | } |
---|
72 | |
---|
73 | Type * AdjustExprType_old::postmutate( TypeInstType * typeInst ) { |
---|
74 | if ( const EqvClass * eqvClass = env.lookup( typeInst->get_name() ) ) { |
---|
75 | if ( eqvClass->data.kind == TypeDecl::Ftype ) { |
---|
76 | return new PointerType{ Type::Qualifiers(), typeInst }; |
---|
77 | } |
---|
78 | } else if ( const NamedTypeDecl * ntDecl = indexer.lookupType( typeInst->get_name() ) ) { |
---|
79 | if ( const TypeDecl * tyDecl = dynamic_cast< const TypeDecl * >( ntDecl ) ) { |
---|
80 | if ( tyDecl->get_kind() == TypeDecl::Ftype ) { |
---|
81 | return new PointerType{ Type::Qualifiers(), typeInst }; |
---|
82 | } // if |
---|
83 | } // if |
---|
84 | } // if |
---|
85 | return typeInst; |
---|
86 | } |
---|
87 | } // anonymous namespace |
---|
88 | |
---|
89 | void adjustExprType( Type *&type, const TypeEnvironment &env, const SymTab::Indexer &indexer ) { |
---|
90 | PassVisitor<AdjustExprType_old> adjuster( env, indexer ); |
---|
91 | Type * newType = type->acceptMutator( adjuster ); |
---|
92 | type = newType; |
---|
93 | } |
---|
94 | |
---|
95 | void adjustExprType( Type *& type ) { |
---|
96 | TypeEnvironment env; |
---|
97 | SymTab::Indexer indexer; |
---|
98 | adjustExprType( type, env, indexer ); |
---|
99 | } |
---|
100 | |
---|
101 | namespace { |
---|
102 | struct AdjustExprType_new final : public ast::WithShortCircuiting { |
---|
103 | const ast::TypeEnvironment & tenv; |
---|
104 | const ast::SymbolTable & symtab; |
---|
105 | |
---|
106 | AdjustExprType_new( const ast::TypeEnvironment & e, const ast::SymbolTable & syms ) |
---|
107 | : tenv( e ), symtab( syms ) {} |
---|
108 | |
---|
109 | void premutate( const ast::VoidType * ) { visit_children = false; } |
---|
110 | void premutate( const ast::BasicType * ) { visit_children = false; } |
---|
111 | void premutate( const ast::PointerType * ) { visit_children = false; } |
---|
112 | void premutate( const ast::ArrayType * ) { visit_children = false; } |
---|
113 | void premutate( const ast::FunctionType * ) { visit_children = false; } |
---|
114 | void premutate( const ast::StructInstType * ) { visit_children = false; } |
---|
115 | void premutate( const ast::UnionInstType * ) { visit_children = false; } |
---|
116 | void premutate( const ast::EnumInstType * ) { visit_children = false; } |
---|
117 | void premutate( const ast::TraitInstType * ) { visit_children = false; } |
---|
118 | void premutate( const ast::TypeInstType * ) { visit_children = false; } |
---|
119 | void premutate( const ast::TupleType * ) { visit_children = false; } |
---|
120 | void premutate( const ast::VarArgsType * ) { visit_children = false; } |
---|
121 | void premutate( const ast::ZeroType * ) { visit_children = false; } |
---|
122 | void premutate( const ast::OneType * ) { visit_children = false; } |
---|
123 | |
---|
124 | const ast::Type * postmutate( const ast::ArrayType * at ) { |
---|
125 | return new ast::PointerType{ at->base, at->qualifiers }; |
---|
126 | } |
---|
127 | |
---|
128 | const ast::Type * postmutate( const ast::FunctionType * ft ) { |
---|
129 | return new ast::PointerType{ ft }; |
---|
130 | } |
---|
131 | |
---|
132 | const ast::Type * postmutate( const ast::TypeInstType * inst ) { |
---|
133 | // replace known function-type-variables with pointer-to-function |
---|
134 | if ( const ast::EqvClass * eqvClass = tenv.lookup( inst->name ) ) { |
---|
135 | if ( eqvClass->data.kind == ast::TypeVar::Ftype ) { |
---|
136 | return new ast::PointerType{ inst }; |
---|
137 | } |
---|
138 | } else if ( const ast::NamedTypeDecl * ntDecl = symtab.lookupType( inst->name ) ) { |
---|
139 | if ( auto tyDecl = dynamic_cast< const ast::TypeDecl * >( ntDecl ) ) { |
---|
140 | if ( tyDecl->kind == ast::TypeVar::Ftype ) { |
---|
141 | return new ast::PointerType{ inst }; |
---|
142 | } |
---|
143 | } |
---|
144 | } |
---|
145 | return inst; |
---|
146 | } |
---|
147 | }; |
---|
148 | } // anonymous namespace |
---|
149 | |
---|
150 | const ast::Type * adjustExprType( |
---|
151 | const ast::Type * type, const ast::TypeEnvironment & env, const ast::SymbolTable & symtab |
---|
152 | ) { |
---|
153 | ast::Pass<AdjustExprType_new> adjuster{ env, symtab }; |
---|
154 | return type->accept( adjuster ); |
---|
155 | } |
---|
156 | |
---|
157 | } // namespace ResolvExpr |
---|
158 | |
---|
159 | // Local Variables: // |
---|
160 | // tab-width: 4 // |
---|
161 | // mode: c++ // |
---|
162 | // compile-command: "make install" // |
---|
163 | // End: // |
---|