source: src/ResolvExpr/CommonType.cc@ f7cb0bc

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 f7cb0bc was d7dc824, checked in by Thierry Delisle <tdelisle@…>, 8 years ago

Removed more warnings
  • 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 : Thu Mar 16 16:24:31 2017
13// Update Count : 7
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
46 Type *result;
47 Type *type2; // inherited
48 bool widenFirst, widenSecond;
49 const SymTab::Indexer &indexer;
50 TypeEnvironment &env;
51 const OpenVarSet &openVars;
52 };
53
54 Type *commonType( Type *type1, Type *type2, bool widenFirst, bool widenSecond, const SymTab::Indexer &indexer, TypeEnvironment &env, const OpenVarSet &openVars ) {
55 CommonType visitor( type2, widenFirst, widenSecond, indexer, env, openVars );
56 type1->accept( visitor );
57 Type *result = visitor.get_result();
58 if ( ! result ) {
59 // this appears to be handling for opaque type declarations
60 if ( widenSecond ) {
61 if ( TypeInstType *inst = dynamic_cast< TypeInstType* >( type2 ) ) {
62 if ( NamedTypeDecl *nt = indexer.lookupType( inst->get_name() ) ) {
63 TypeDecl *type = safe_dynamic_cast< TypeDecl* >( nt );
64 if ( type->get_base() ) {
65 Type::Qualifiers tq1 = type1->get_qualifiers(), tq2 = type2->get_qualifiers();
66 AssertionSet have, need;
67 OpenVarSet newOpen( openVars );
68 type1->get_qualifiers() = Type::Qualifiers();
69 type->get_base()->get_qualifiers() = tq1;
70 if ( unifyExact( type1, type->get_base(), env, have, need, newOpen, indexer ) ) {
71 result = type1->clone();
72 result->get_qualifiers() = tq1 | tq2;
73 } // if
74 type1->get_qualifiers() = tq1;
75 type->get_base()->get_qualifiers() = Type::Qualifiers();
76 } // if
77 } // if
78 } // if
79 } // if
80 } // if
81#ifdef DEBUG
82 std::cout << "============= commonType" << std::endl << "type1 is ";
83 type1->print( std::cout );
84 std::cout << " type2 is ";
85 type2->print( std::cout );
86 if ( result ) {
87 std::cout << " common type is ";
88 result->print( std::cout );
89 } else {
90 std::cout << " no common type";
91 } // if
92 std::cout << std::endl;
93#endif
94 return result;
95 }
96
97 static const BasicType::Kind combinedType[ BasicType::NUMBER_OF_BASIC_TYPES ][ BasicType::NUMBER_OF_BASIC_TYPES ] =
98 {
99/* Bool Char SignedChar UnsignedChar ShortSignedInt ShortUnsignedInt SignedInt UnsignedInt LongSignedInt LongUnsignedInt LongLongSignedInt LongLongUnsignedInt Float Double LongDouble FloatComplex DoubleComplex LongDoubleComplex FloatImaginary DoubleImaginary LongDoubleImaginary */
100 /* 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 },
101 /* 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 },
102 /* 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 },
103 /* 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 },
104 /* 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 },
105 /* 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 },
106 /* 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 },
107 /* 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 },
108 /* 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 },
109 /* 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 },
110 /* 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 },
111 /* 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 },
112 /* 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 },
113 /* 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 },
114 /* 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 },
115 /* 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 },
116 /* 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 },
117 /* 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 },
118 /* 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 },
119 /* 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 },
120 /* 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 }
121 };
122
123 CommonType::CommonType( Type *type2, bool widenFirst, bool widenSecond, const SymTab::Indexer &indexer, TypeEnvironment &env, const OpenVarSet &openVars )
124 : result( 0 ), type2( type2 ), widenFirst( widenFirst ), widenSecond( widenSecond ), indexer( indexer ), env( env ), openVars( openVars ) {
125 }
126
127 void CommonType::visit( __attribute((unused)) VoidType *voidType ) {}
128
129 void CommonType::visit( BasicType *basicType ) {
130 if ( BasicType *otherBasic = dynamic_cast< BasicType* >( type2 ) ) {
131 BasicType::Kind newType = combinedType[ basicType->get_kind() ][ otherBasic->get_kind() ];
132 if ( ( ( newType == basicType->get_kind() && basicType->get_qualifiers() >= otherBasic->get_qualifiers() ) || widenFirst ) && ( ( newType == otherBasic->get_kind() && basicType->get_qualifiers() <= otherBasic->get_qualifiers() ) || widenSecond ) ) {
133 result = new BasicType( basicType->get_qualifiers() | otherBasic->get_qualifiers(), newType );
134 } // if
135 } else if ( dynamic_cast< EnumInstType * > ( type2 ) || dynamic_cast< ZeroType* >( type2 ) || dynamic_cast< OneType* >( type2 ) ) {
136 // use signed int in lieu of the enum/zero/one type
137 BasicType::Kind newType = combinedType[ basicType->get_kind() ][ BasicType::SignedInt ];
138 if ( ( ( newType == basicType->get_kind() && basicType->get_qualifiers() >= type2->get_qualifiers() ) || widenFirst ) && ( ( newType != basicType->get_kind() && basicType->get_qualifiers() <= type2->get_qualifiers() ) || widenSecond ) ) {
139 result = new BasicType( basicType->get_qualifiers() | type2->get_qualifiers(), newType );
140 } // if
141 } // if
142 }
143
144 void CommonType::getCommonWithVoidPointer( PointerType* voidPointer, PointerType* otherPointer ) {
145 if ( TypeInstType* var = dynamic_cast< TypeInstType* >( otherPointer->get_base() ) ) {
146 OpenVarSet::const_iterator entry = openVars.find( var->get_name() );
147 if ( entry != openVars.end() ) {
148 AssertionSet need, have;
149 WidenMode widen( widenFirst, widenSecond );
150 if ( entry != openVars.end() && ! bindVar(var, voidPointer->get_base(), entry->second, env, need, have, openVars, widen, indexer ) ) return;
151 }
152 }
153 result = voidPointer->clone();
154 result->get_qualifiers() |= otherPointer->get_qualifiers();
155 }
156
157 void CommonType::visit( PointerType *pointerType ) {
158 if ( PointerType *otherPointer = dynamic_cast< PointerType* >( type2 ) ) {
159 if ( widenFirst && dynamic_cast< VoidType* >( otherPointer->get_base() ) && ! isFtype(pointerType->get_base()) ) {
160 getCommonWithVoidPointer( otherPointer, pointerType );
161 } else if ( widenSecond && dynamic_cast< VoidType* >( pointerType->get_base() ) && ! isFtype(otherPointer->get_base()) ) {
162 getCommonWithVoidPointer( pointerType, otherPointer );
163 } else if ( ( pointerType->get_base()->get_qualifiers() >= otherPointer->get_base()->get_qualifiers() || widenFirst )
164 && ( pointerType->get_base()->get_qualifiers() <= otherPointer->get_base()->get_qualifiers() || widenSecond ) ) {
165 Type::Qualifiers tq1 = pointerType->get_base()->get_qualifiers(), tq2 = otherPointer->get_base()->get_qualifiers();
166 pointerType->get_base()->get_qualifiers() = Type::Qualifiers();
167 otherPointer->get_base()->get_qualifiers() = Type::Qualifiers();
168 AssertionSet have, need;
169 OpenVarSet newOpen( openVars );
170 if ( unifyExact( pointerType->get_base(), otherPointer->get_base(), env, have, need, newOpen, indexer ) ) {
171 if ( tq1 < tq2 ) {
172 result = pointerType->clone();
173 } else {
174 result = otherPointer->clone();
175 } // if
176 result->get_qualifiers() = tq1 | tq2;
177 } else {
178 /// std::cout << "place for ptr-to-type" << std::endl;
179 } // if
180 pointerType->get_base()->get_qualifiers() = tq1;
181 otherPointer->get_base()->get_qualifiers() = tq2;
182 } // if
183 } else if ( widenSecond && dynamic_cast< ZeroType* >( type2 ) ) {
184 result = pointerType->clone();
185 result->get_qualifiers() |= type2->get_qualifiers();
186 } // if
187 }
188
189 void CommonType::visit( __attribute((unused)) ArrayType *arrayType ) {}
190 void CommonType::visit( __attribute((unused)) FunctionType *functionType ) {}
191 void CommonType::visit( __attribute((unused)) StructInstType *aggregateUseType ) {}
192 void CommonType::visit( __attribute((unused)) UnionInstType *aggregateUseType ) {}
193
194 void CommonType::visit( EnumInstType *enumInstType ) {
195 if ( dynamic_cast< BasicType * >( type2 ) || dynamic_cast< ZeroType* >( type2 ) || dynamic_cast< OneType* >( type2 ) ) {
196 // reuse BasicType, EnumInstType code by swapping type2 with enumInstType
197 Type * temp = type2;
198 type2 = enumInstType;
199 temp->accept( *this );
200 type2 = temp;
201 } // if
202 }
203
204 void CommonType::visit( __attribute((unused)) TraitInstType *aggregateUseType ) {
205 }
206
207 void CommonType::visit( TypeInstType *inst ) {
208 if ( widenFirst ) {
209 NamedTypeDecl *nt = indexer.lookupType( inst->get_name() );
210 if ( nt ) {
211 TypeDecl *type = safe_dynamic_cast< TypeDecl* >( nt );
212 if ( type->get_base() ) {
213 Type::Qualifiers tq1 = inst->get_qualifiers(), tq2 = type2->get_qualifiers();
214 AssertionSet have, need;
215 OpenVarSet newOpen( openVars );
216 type2->get_qualifiers() = Type::Qualifiers();
217 type->get_base()->get_qualifiers() = tq1;
218 if ( unifyExact( type->get_base(), type2, env, have, need, newOpen, indexer ) ) {
219 result = type2->clone();
220 result->get_qualifiers() = tq1 | tq2;
221 } // if
222 type2->get_qualifiers() = tq2;
223 type->get_base()->get_qualifiers() = Type::Qualifiers();
224 } // if
225 } // if
226 } // if
227 }
228
229 void CommonType::visit( __attribute((unused)) TupleType *tupleType ) {}
230 void CommonType::visit( __attribute((unused)) VarArgsType *varArgsType ) {}
231
232 void CommonType::visit( ZeroType *zeroType ) {
233 if ( widenFirst ) {
234 if ( dynamic_cast< BasicType* >( type2 ) || dynamic_cast< PointerType* >( type2 ) || dynamic_cast< EnumInstType* >( type2 ) ) {
235 if ( widenSecond || zeroType->get_qualifiers() <= type2->get_qualifiers() ) {
236 result = type2->clone();
237 result->get_qualifiers() |= zeroType->get_qualifiers();
238 }
239 } else if ( widenSecond && dynamic_cast< OneType* >( type2 ) ) {
240 result = new BasicType( zeroType->get_qualifiers(), BasicType::SignedInt );
241 result->get_qualifiers() |= type2->get_qualifiers();
242 }
243 }
244 }
245
246 void CommonType::visit( OneType *oneType ) {
247 if ( widenFirst ) {
248 if ( dynamic_cast< BasicType* >( type2 ) || dynamic_cast< EnumInstType* >( type2 ) ) {
249 if ( widenSecond || oneType->get_qualifiers() <= type2->get_qualifiers() ) {
250 result = type2->clone();
251 result->get_qualifiers() |= oneType->get_qualifiers();
252 }
253 } else if ( widenSecond && dynamic_cast< ZeroType* >( type2 ) ) {
254 result = new BasicType( oneType->get_qualifiers(), BasicType::SignedInt );
255 result->get_qualifiers() |= type2->get_qualifiers();
256 }
257 }
258 }
259} // namespace ResolvExpr
260
261// Local Variables: //
262// tab-width: 4 //
263// mode: c++ //
264// compile-command: "make install" //
265// End: //
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