source: src/ResolvExpr/CommonType.cc@ 2d59d53

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new with_gc
Last change on this file since 2d59d53 was a2a77af, checked in by Aaron Moss <a3moss@…>, 9 years ago

Fix void* to dtype* bindings
  • Property mode set to 100644
File size: 22.2 KB
Line 
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// CommonType.cc --
8//
9// Author : Richard C. Bilson
10// Created On : Sun May 17 06:59:27 2015
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Wed Mar 2 17:35:34 2016
13// Update Count : 3
14//
15
16#include "typeops.h"
17#include "SynTree/Type.h"
18#include "Unify.h"
19
20
21/// #define DEBUG
22
23namespace ResolvExpr {
24 class CommonType : public Visitor {
25 public:
26 CommonType( Type *type2, bool widenFirst, bool widenSecond, const SymTab::Indexer &indexer, TypeEnvironment &env, const OpenVarSet &openVars );
27 Type *get_result() const { return result; }
28 private:
29 virtual void visit( VoidType *voidType );
30 virtual void visit( BasicType *basicType );
31 virtual void visit( PointerType *pointerType );
32 virtual void visit( ArrayType *arrayType );
33 virtual void visit( FunctionType *functionType );
34 virtual void visit( StructInstType *aggregateUseType );
35 virtual void visit( UnionInstType *aggregateUseType );
36 virtual void visit( EnumInstType *aggregateUseType );
37 virtual void visit( TraitInstType *aggregateUseType );
38 virtual void visit( TypeInstType *aggregateUseType );
39 virtual void visit( TupleType *tupleType );
40 virtual void visit( VarArgsType *varArgsType );
41 virtual void visit( ZeroType *zeroType );
42 virtual void visit( OneType *oneType );
43
44 void getCommonWithVoidPointer( PointerType* voidPointer, PointerType* otherPointer );
45 template< typename RefType > void handleRefType( RefType *inst, Type *other );
46
47 Type *result;
48 Type *type2; // inherited
49 bool widenFirst, widenSecond;
50 const SymTab::Indexer &indexer;
51 TypeEnvironment &env;
52 const OpenVarSet &openVars;
53 };
54
55 Type *commonType( Type *type1, Type *type2, bool widenFirst, bool widenSecond, const SymTab::Indexer &indexer, TypeEnvironment &env, const OpenVarSet &openVars ) {
56 CommonType visitor( type2, widenFirst, widenSecond, indexer, env, openVars );
57 type1->accept( visitor );
58 Type *result = visitor.get_result();
59 if ( ! result ) {
60 if ( widenSecond ) {
61 TypeInstType *inst = dynamic_cast< TypeInstType* >( type2 );
62 if ( inst ) {
63 NamedTypeDecl *nt = indexer.lookupType( inst->get_name() );
64 if ( nt ) {
65 TypeDecl *type = dynamic_cast< TypeDecl* >( nt );
66 assert( type );
67 if ( type->get_base() ) {
68 Type::Qualifiers tq1 = type1->get_qualifiers(), tq2 = type2->get_qualifiers();
69 AssertionSet have, need;
70 OpenVarSet newOpen( openVars );
71 type1->get_qualifiers() = Type::Qualifiers();
72 type->get_base()->get_qualifiers() = tq1;
73 if ( unifyExact( type1, type->get_base(), env, have, need, newOpen, indexer ) ) {
74 result = type1->clone();
75 result->get_qualifiers() = tq1 + tq2;
76 } // if
77 type1->get_qualifiers() = tq1;
78 type->get_base()->get_qualifiers() = Type::Qualifiers();
79 } // if
80 } // if
81 } // if
82 } // if
83 } // if
84#ifdef DEBUG
85 std::cout << "============= commonType" << std::endl << "type1 is ";
86 type1->print( std::cout );
87 std::cout << " type2 is ";
88 type2->print( std::cout );
89 if ( result ) {
90 std::cout << " common type is ";
91 result->print( std::cout );
92 } else {
93 std::cout << " no common type";
94 } // if
95 std::cout << std::endl;
96#endif
97 return result;
98 }
99
100 static const BasicType::Kind combinedType[ BasicType::NUMBER_OF_BASIC_TYPES ][ BasicType::NUMBER_OF_BASIC_TYPES ] =
101 {
102/* Bool Char SignedChar UnsignedChar ShortSignedInt ShortUnsignedInt SignedInt UnsignedInt LongSignedInt LongUnsignedInt LongLongSignedInt LongLongUnsignedInt Float Double LongDouble FloatComplex DoubleComplex LongDoubleComplex FloatImaginary DoubleImaginary LongDoubleImaginary */
103 /* Bool */ { BasicType::Bool, BasicType::Char, BasicType::SignedChar, BasicType::UnsignedChar, BasicType::ShortSignedInt, BasicType::ShortUnsignedInt, BasicType::SignedInt, BasicType::UnsignedInt, BasicType::LongSignedInt, BasicType::LongUnsignedInt, BasicType::LongLongSignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
104 /* Char */ { BasicType::Char, BasicType::Char, BasicType::UnsignedChar, BasicType::UnsignedChar, BasicType::ShortSignedInt, BasicType::ShortUnsignedInt, BasicType::SignedInt, BasicType::UnsignedInt, BasicType::LongSignedInt, BasicType::LongUnsignedInt, BasicType::LongLongSignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
105 /* SignedChar */ { BasicType::SignedChar, BasicType::UnsignedChar, BasicType::SignedChar, BasicType::UnsignedChar, BasicType::ShortSignedInt, BasicType::ShortUnsignedInt, BasicType::SignedInt, BasicType::UnsignedInt, BasicType::LongSignedInt, BasicType::LongUnsignedInt, BasicType::LongLongSignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
106 /* UnsignedChar */ { BasicType::UnsignedChar, BasicType::UnsignedChar, BasicType::UnsignedChar, BasicType::UnsignedChar, BasicType::ShortSignedInt, BasicType::ShortUnsignedInt, BasicType::SignedInt, BasicType::UnsignedInt, BasicType::LongSignedInt, BasicType::LongUnsignedInt, BasicType::LongLongSignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
107 /* ShortSignedInt */ { BasicType::ShortSignedInt, BasicType::ShortSignedInt, BasicType::ShortSignedInt, BasicType::ShortSignedInt, BasicType::ShortSignedInt, BasicType::ShortUnsignedInt, BasicType::SignedInt, BasicType::UnsignedInt, BasicType::LongSignedInt, BasicType::LongUnsignedInt, BasicType::LongLongSignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
108 /* ShortUnsignedInt */ { BasicType::ShortUnsignedInt, BasicType::ShortUnsignedInt, BasicType::ShortUnsignedInt, BasicType::ShortUnsignedInt, BasicType::ShortUnsignedInt, BasicType::ShortUnsignedInt, BasicType::SignedInt, BasicType::UnsignedInt, BasicType::LongSignedInt, BasicType::LongUnsignedInt, BasicType::LongLongSignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
109 /* SignedInt */ { BasicType::SignedInt, BasicType::SignedInt, BasicType::SignedInt, BasicType::SignedInt, BasicType::SignedInt, BasicType::SignedInt, BasicType::SignedInt, BasicType::UnsignedInt, BasicType::LongSignedInt, BasicType::LongUnsignedInt, BasicType::LongLongSignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
110 /* UnsignedInt */ { BasicType::UnsignedInt, BasicType::UnsignedInt, BasicType::UnsignedInt, BasicType::UnsignedInt, BasicType::UnsignedInt, BasicType::UnsignedInt, BasicType::UnsignedInt, BasicType::UnsignedInt, BasicType::LongUnsignedInt, BasicType::LongUnsignedInt, BasicType::LongLongSignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
111 /* LongSignedInt */ { BasicType::LongSignedInt, BasicType::LongSignedInt, BasicType::LongSignedInt, BasicType::LongSignedInt, BasicType::LongSignedInt, BasicType::LongSignedInt, BasicType::LongSignedInt, BasicType::LongUnsignedInt, BasicType::LongSignedInt, BasicType::LongUnsignedInt, BasicType::LongLongSignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
112 /* LongUnsignedInt */ { BasicType::LongUnsignedInt, BasicType::LongUnsignedInt, BasicType::LongUnsignedInt, BasicType::LongUnsignedInt, BasicType::LongUnsignedInt, BasicType::LongUnsignedInt, BasicType::LongUnsignedInt, BasicType::LongUnsignedInt, BasicType::LongUnsignedInt, BasicType::LongUnsignedInt, BasicType::LongLongSignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
113 /* LongLongSignedInt */ { BasicType::LongLongSignedInt, BasicType::LongLongSignedInt, BasicType::LongLongSignedInt, BasicType::LongLongSignedInt, BasicType::LongLongSignedInt, BasicType::LongLongSignedInt, BasicType::LongLongSignedInt, BasicType::LongLongSignedInt, BasicType::LongLongSignedInt, BasicType::LongLongSignedInt, BasicType::LongLongSignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
114 /* LongLongUnsignedInt */ { BasicType::LongLongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::LongLongUnsignedInt, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
115 /* Float */ { BasicType::Float, BasicType::Float, BasicType::Float, BasicType::Float, BasicType::Float, BasicType::Float, BasicType::Float, BasicType::Float, BasicType::Float, BasicType::Float, BasicType::Float, BasicType::Float, BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
116 /* Double */ { BasicType::Double, BasicType::Double, BasicType::Double, BasicType::Double, BasicType::Double, BasicType::Double, BasicType::Double, BasicType::Double, BasicType::Double, BasicType::Double, BasicType::Double, BasicType::Double, BasicType::Double, BasicType::Double, BasicType::LongDouble, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
117 /* LongDouble */ { BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDouble, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex },
118 /* FloatComplex */ { BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
119 /* DoubleComplex */ { BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
120 /* LongDoubleComplex */ { BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex },
121 /* FloatImaginary */ { BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::FloatImaginary, BasicType::DoubleImaginary, BasicType::LongDoubleImaginary },
122 /* DoubleImaginary */ { BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::DoubleComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::DoubleImaginary, BasicType::DoubleImaginary, BasicType::LongDoubleImaginary },
123 /* LongDoubleImaginary */ { BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleComplex, BasicType::LongDoubleImaginary, BasicType::LongDoubleImaginary, BasicType::LongDoubleImaginary }
124 };
125
126 CommonType::CommonType( Type *type2, bool widenFirst, bool widenSecond, const SymTab::Indexer &indexer, TypeEnvironment &env, const OpenVarSet &openVars )
127 : result( 0 ), type2( type2 ), widenFirst( widenFirst ), widenSecond( widenSecond ), indexer( indexer ), env( env ), openVars( openVars ) {
128 }
129
130 void CommonType::visit( VoidType *voidType ) {
131 }
132
133 void CommonType::visit( BasicType *basicType ) {
134 if ( BasicType *otherBasic = dynamic_cast< BasicType* >( type2 ) ) {
135 BasicType::Kind newType = combinedType[ basicType->get_kind() ][ otherBasic->get_kind() ];
136 if ( ( ( newType == basicType->get_kind() && basicType->get_qualifiers() >= otherBasic->get_qualifiers() ) || widenFirst ) && ( ( newType == otherBasic->get_kind() && basicType->get_qualifiers() <= otherBasic->get_qualifiers() ) || widenSecond ) ) {
137 result = new BasicType( basicType->get_qualifiers() + otherBasic->get_qualifiers(), newType );
138 } // if
139 } else if ( dynamic_cast< EnumInstType * > ( type2 ) || dynamic_cast< ZeroType* >( type2 ) || dynamic_cast< OneType* >( type2 ) ) {
140 // use signed int in lieu of the enum/zero/one type
141 BasicType::Kind newType = combinedType[ basicType->get_kind() ][ BasicType::SignedInt ];
142 if ( ( ( newType == basicType->get_kind() && basicType->get_qualifiers() >= type2->get_qualifiers() ) || widenFirst ) && ( ( newType != basicType->get_kind() && basicType->get_qualifiers() <= type2->get_qualifiers() ) || widenSecond ) ) {
143 result = new BasicType( basicType->get_qualifiers() + type2->get_qualifiers(), newType );
144 } // if
145 } // if
146 }
147
148 void CommonType::getCommonWithVoidPointer( PointerType* voidPointer, PointerType* otherPointer ) {
149 if ( TypeInstType* var = dynamic_cast< TypeInstType* >( otherPointer->get_base() ) ) {
150 OpenVarSet::const_iterator entry = openVars.find( var->get_name() );
151 if ( entry != openVars.end() ) {
152 AssertionSet need, have;
153 WidenMode widen( widenFirst, widenSecond );
154 if ( entry != openVars.end() && ! bindVar(var, voidPointer->get_base(), entry->second, env, need, have, openVars, widen, indexer ) ) return;
155 }
156 }
157 result = voidPointer->clone();
158 result->get_qualifiers() += otherPointer->get_qualifiers();
159 }
160
161 void CommonType::visit( PointerType *pointerType ) {
162 if ( PointerType *otherPointer = dynamic_cast< PointerType* >( type2 ) ) {
163 if ( widenFirst && dynamic_cast< VoidType* >( otherPointer->get_base() ) && ! isFtype(pointerType->get_base(), indexer) ) {
164 getCommonWithVoidPointer( otherPointer, pointerType );
165 } else if ( widenSecond && dynamic_cast< VoidType* >( pointerType->get_base() ) && ! isFtype(otherPointer->get_base(), indexer) ) {
166 getCommonWithVoidPointer( pointerType, otherPointer );
167 } else if ( ( pointerType->get_base()->get_qualifiers() >= otherPointer->get_base()->get_qualifiers() || widenFirst )
168 && ( pointerType->get_base()->get_qualifiers() <= otherPointer->get_base()->get_qualifiers() || widenSecond ) ) {
169 Type::Qualifiers tq1 = pointerType->get_base()->get_qualifiers(), tq2 = otherPointer->get_base()->get_qualifiers();
170 pointerType->get_base()->get_qualifiers() = Type::Qualifiers();
171 otherPointer->get_base()->get_qualifiers() = Type::Qualifiers();
172 AssertionSet have, need;
173 OpenVarSet newOpen( openVars );
174 if ( unifyExact( pointerType->get_base(), otherPointer->get_base(), env, have, need, newOpen, indexer ) ) {
175 if ( tq1 < tq2 ) {
176 result = pointerType->clone();
177 } else {
178 result = otherPointer->clone();
179 } // if
180 result->get_qualifiers() = tq1 + tq2;
181 } else {
182 /// std::cout << "place for ptr-to-type" << std::endl;
183 } // if
184 pointerType->get_base()->get_qualifiers() = tq1;
185 otherPointer->get_base()->get_qualifiers() = tq2;
186 } // if
187 } else if ( widenSecond && dynamic_cast< ZeroType* >( type2 ) ) {
188 result = pointerType->clone();
189 result->get_qualifiers() += type2->get_qualifiers();
190 } // if
191 }
192
193 void CommonType::visit( ArrayType *arrayType ) {
194 }
195
196 void CommonType::visit( FunctionType *functionType ) {
197 }
198
199 template< typename RefType > void CommonType::handleRefType( RefType *inst, Type *other ) {
200 }
201
202 void CommonType::visit( StructInstType *aggregateUseType ) {
203 }
204
205 void CommonType::visit( UnionInstType *aggregateUseType ) {
206 }
207
208 void CommonType::visit( EnumInstType *enumInstType ) {
209 if ( dynamic_cast< BasicType * >( type2 ) || dynamic_cast< ZeroType* >( type2 ) || dynamic_cast< OneType* >( type2 ) ) {
210 // reuse BasicType, EnumInstType code by swapping type2 with enumInstType
211 Type * temp = type2;
212 type2 = enumInstType;
213 temp->accept( *this );
214 type2 = temp;
215 } // if
216 }
217
218 void CommonType::visit( TraitInstType *aggregateUseType ) {
219 }
220
221 void CommonType::visit( TypeInstType *inst ) {
222 if ( widenFirst ) {
223 NamedTypeDecl *nt = indexer.lookupType( inst->get_name() );
224 if ( nt ) {
225 TypeDecl *type = dynamic_cast< TypeDecl* >( nt );
226 assert( type );
227 if ( type->get_base() ) {
228 Type::Qualifiers tq1 = inst->get_qualifiers(), tq2 = type2->get_qualifiers();
229 AssertionSet have, need;
230 OpenVarSet newOpen( openVars );
231 type2->get_qualifiers() = Type::Qualifiers();
232 type->get_base()->get_qualifiers() = tq1;
233 if ( unifyExact( type->get_base(), type2, env, have, need, newOpen, indexer ) ) {
234 result = type2->clone();
235 result->get_qualifiers() = tq1 + tq2;
236 } // if
237 type2->get_qualifiers() = tq2;
238 type->get_base()->get_qualifiers() = Type::Qualifiers();
239 } // if
240 } // if
241 } // if
242 }
243
244 void CommonType::visit( TupleType *tupleType ) {
245 }
246
247 void CommonType::visit( VarArgsType *varArgsType ) {
248 }
249
250 void CommonType::visit( ZeroType *zeroType ) {
251 if ( widenFirst ) {
252 if ( dynamic_cast< BasicType* >( type2 ) || dynamic_cast< PointerType* >( type2 ) || dynamic_cast< EnumInstType* >( type2 ) ) {
253 if ( widenSecond || zeroType->get_qualifiers() <= type2->get_qualifiers() ) {
254 result = type2->clone();
255 result->get_qualifiers() += zeroType->get_qualifiers();
256 }
257 } else if ( widenSecond && dynamic_cast< OneType* >( type2 ) ) {
258 result = new BasicType( zeroType->get_qualifiers(), BasicType::SignedInt );
259 result->get_qualifiers() += type2->get_qualifiers();
260 }
261 }
262 }
263
264 void CommonType::visit( OneType *oneType ) {
265 if ( widenFirst ) {
266 if ( dynamic_cast< BasicType* >( type2 ) || dynamic_cast< EnumInstType* >( type2 ) ) {
267 if ( widenSecond || oneType->get_qualifiers() <= type2->get_qualifiers() ) {
268 result = type2->clone();
269 result->get_qualifiers() += oneType->get_qualifiers();
270 }
271 } else if ( widenSecond && dynamic_cast< ZeroType* >( type2 ) ) {
272 result = new BasicType( oneType->get_qualifiers(), BasicType::SignedInt );
273 result->get_qualifiers() += type2->get_qualifiers();
274 }
275 }
276 }
277} // namespace ResolvExpr
278
279// Local Variables: //
280// tab-width: 4 //
281// mode: c++ //
282// compile-command: "make install" //
283// End: //
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