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 | // CommonType.cc -- |
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8 | // |
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9 | // Author : Richard C. Bilson |
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10 | // Created On : Sun May 17 06:59:27 2015 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Thu Feb 14 17:10:10 2019 |
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13 | // Update Count : 24 |
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14 | // |
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15 | |
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16 | #include <cassert> // for strict_dynamic_cast |
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17 | #include <map> // for _Rb_tree_const_iterator |
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18 | #include <utility> // for pair |
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19 | |
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20 | #include "AST/Decl.hpp" |
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21 | #include "AST/Type.hpp" |
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22 | #include "Common/PassVisitor.h" |
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23 | #include "ResolvExpr/TypeEnvironment.h" // for OpenVarSet, AssertionSet |
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24 | #include "SymTab/Indexer.h" // for Indexer |
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25 | #include "SynTree/Declaration.h" // for TypeDecl, NamedTypeDecl (ptr... |
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26 | #include "SynTree/Type.h" // for BasicType, BasicType::Kind::... |
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27 | #include "SynTree/Visitor.h" // for Visitor |
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28 | #include "Unify.h" // for unifyExact, WidenMode |
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29 | #include "typeops.h" // for isFtype |
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30 | |
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31 | // #define DEBUG |
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32 | #ifdef DEBUG |
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33 | #define PRINT(x) x |
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34 | #else |
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35 | #define PRINT(x) |
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36 | #endif |
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37 | |
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38 | namespace ResolvExpr { |
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39 | struct CommonType_old : public WithShortCircuiting { |
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40 | CommonType_old( Type * type2, bool widenFirst, bool widenSecond, const SymTab::Indexer &indexer, TypeEnvironment &env, const OpenVarSet &openVars ); |
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41 | Type * get_result() const { return result; } |
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42 | |
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43 | void previsit( BaseSyntaxNode * ) { visit_children = false; } |
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44 | |
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45 | void postvisit( VoidType * voidType ); |
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46 | void postvisit( BasicType * basicType ); |
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47 | void postvisit( PointerType * pointerType ); |
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48 | void postvisit( ArrayType * arrayType ); |
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49 | void postvisit( ReferenceType * refType ); |
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50 | void postvisit( FunctionType * functionType ); |
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51 | void postvisit( StructInstType * aggregateUseType ); |
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52 | void postvisit( UnionInstType * aggregateUseType ); |
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53 | void postvisit( EnumInstType * aggregateUseType ); |
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54 | void postvisit( TraitInstType * aggregateUseType ); |
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55 | void postvisit( TypeInstType * aggregateUseType ); |
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56 | void postvisit( TupleType * tupleType ); |
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57 | void postvisit( VarArgsType * varArgsType ); |
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58 | void postvisit( ZeroType * zeroType ); |
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59 | void postvisit( OneType * oneType ); |
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60 | |
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61 | private: |
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62 | template< typename Pointer > void getCommonWithVoidPointer( Pointer * voidPointer, Pointer * otherPointer ); |
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63 | template< typename RefType > void handleRefType( RefType * inst, Type * other ); |
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64 | |
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65 | Type * result; |
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66 | Type * type2; // inherited |
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67 | bool widenFirst, widenSecond; |
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68 | const SymTab::Indexer &indexer; |
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69 | TypeEnvironment &env; |
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70 | const OpenVarSet &openVars; |
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71 | }; |
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72 | |
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73 | Type * handleReference( Type * t1, Type * t2, bool widenFirst, bool widenSecond, const SymTab::Indexer &indexer, TypeEnvironment & env, const OpenVarSet &openVars ) { |
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74 | Type * common = nullptr; |
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75 | AssertionSet have, need; |
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76 | OpenVarSet newOpen( openVars ); |
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77 | // need unify to bind type variables |
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78 | if ( unify( t1, t2, env, have, need, newOpen, indexer, common ) ) { |
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79 | PRINT( |
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80 | std::cerr << "unify success: " << widenFirst << " " << widenSecond << std::endl; |
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81 | ) |
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82 | if ( (widenFirst || t2->tq <= t1->tq) && (widenSecond || t1->tq <= t2->tq) ) { |
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83 | PRINT( |
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84 | std::cerr << "widen okay" << std::endl; |
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85 | ) |
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86 | common->tq |= t1->tq; |
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87 | common->tq |= t2->tq; |
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88 | return common; |
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89 | } |
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90 | } |
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91 | PRINT( |
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92 | std::cerr << "exact unify failed: " << t1 << " " << t2 << std::endl; |
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93 | ) |
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94 | return nullptr; |
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95 | } |
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96 | |
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97 | Type * commonType( Type * type1, Type * type2, bool widenFirst, bool widenSecond, const SymTab::Indexer &indexer, TypeEnvironment &env, const OpenVarSet &openVars ) { |
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98 | PassVisitor<CommonType_old> visitor( type2, widenFirst, widenSecond, indexer, env, openVars ); |
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99 | |
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100 | int depth1 = type1->referenceDepth(); |
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101 | int depth2 = type2->referenceDepth(); |
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102 | if ( depth1 > 0 || depth2 > 0 ) { |
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103 | int diff = depth1-depth2; |
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104 | // TODO: should it be possible for commonType to generate complicated conversions? I would argue no, only conversions that involve types of the same reference level or a difference of 1 should be allowed. |
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105 | // if ( diff > 1 || diff < -1 ) return nullptr; |
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106 | |
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107 | // special case where one type has a reference depth of 1 larger than the other |
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108 | if ( diff > 0 || diff < 0 ) { |
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109 | PRINT( |
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110 | std::cerr << "reference depth diff: " << diff << std::endl; |
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111 | ) |
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112 | Type * result = nullptr; |
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113 | ReferenceType * ref1 = dynamic_cast< ReferenceType * >( type1 ); |
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114 | ReferenceType * ref2 = dynamic_cast< ReferenceType * >( type2 ); |
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115 | if ( diff > 0 ) { |
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116 | // deeper on the left |
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117 | assert( ref1 ); |
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118 | result = handleReference( ref1->base, type2, widenFirst, widenSecond, indexer, env, openVars ); |
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119 | } else { |
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120 | // deeper on the right |
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121 | assert( ref2 ); |
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122 | result = handleReference( type1, ref2->base, widenFirst, widenSecond, indexer, env, openVars ); |
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123 | } |
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124 | if ( result && ref1 ) { |
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125 | // formal is reference, so result should be reference |
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126 | PRINT( |
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127 | std::cerr << "formal is reference; result should be reference" << std::endl; |
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128 | ) |
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129 | result = new ReferenceType( ref1->tq, result ); |
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130 | } |
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131 | PRINT( |
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132 | std::cerr << "common type of reference [" << type1 << "] and [" << type2 << "] is [" << result << "]" << std::endl; |
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133 | ) |
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134 | return result; |
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135 | } |
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136 | // otherwise, both are reference types of the same depth and this is handled by the CommonType visitor. |
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137 | } |
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138 | |
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139 | type1->accept( visitor ); |
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140 | Type * result = visitor.pass.get_result(); |
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141 | if ( ! result ) { |
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142 | // this appears to be handling for opaque type declarations |
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143 | if ( widenSecond ) { |
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144 | if ( const TypeInstType * inst = dynamic_cast< const TypeInstType * >( type2 ) ) { |
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145 | if ( const NamedTypeDecl * nt = indexer.lookupType( inst->get_name() ) ) { |
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146 | const TypeDecl * type = strict_dynamic_cast< const TypeDecl * >( nt ); |
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147 | if ( type->get_base() ) { |
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148 | Type::Qualifiers tq1 = type1->tq, tq2 = type2->tq; |
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149 | AssertionSet have, need; |
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150 | OpenVarSet newOpen( openVars ); |
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151 | type1->tq = Type::Qualifiers(); |
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152 | type->get_base()->tq = tq1; |
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153 | if ( unifyExact( type1, type->get_base(), env, have, need, newOpen, indexer ) ) { |
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154 | result = type1->clone(); |
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155 | result->tq = tq1 | tq2; |
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156 | } // if |
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157 | type1->tq = tq1; |
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158 | type->get_base()->tq = Type::Qualifiers(); |
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159 | } // if |
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160 | } // if |
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161 | } // if |
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162 | } // if |
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163 | } // if |
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164 | #ifdef DEBUG |
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165 | std::cerr << "============= commonType" << std::endl << "type1 is "; |
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166 | type1->print( std::cerr ); |
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167 | std::cerr << " type2 is "; |
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168 | type2->print( std::cerr ); |
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169 | if ( result ) { |
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170 | std::cerr << " common type is "; |
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171 | result->print( std::cerr ); |
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172 | } else { |
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173 | std::cerr << " no common type"; |
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174 | } // if |
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175 | std::cerr << std::endl; |
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176 | #endif |
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177 | return result; |
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178 | } |
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179 | |
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180 | // GENERATED START, DO NOT EDIT |
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181 | // GENERATED BY BasicTypes-gen.cc |
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182 | #define BT BasicType:: |
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183 | static const BasicType::Kind commonTypes[BasicType::NUMBER_OF_BASIC_TYPES][BasicType::NUMBER_OF_BASIC_TYPES] = { // nearest common ancestor |
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184 | /* B C SC UC SI SUI |
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185 | I UI LI LUI LLI LLUI |
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186 | IB UIB _FH _FH _F _FC |
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187 | F FC _FX _FXC FD _FDC |
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188 | D DC F80X _FDXC F80 _FB |
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189 | _FLDC FB LD LDC _FBX _FLDXC |
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190 | */ |
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191 | { |
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192 | /* B */ BT Bool, BT Char, BT SignedChar, BT UnsignedChar, BT ShortSignedInt, BT ShortUnsignedInt, |
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193 | BT SignedInt, BT UnsignedInt, BT LongSignedInt, BT LongUnsignedInt, BT LongLongSignedInt, BT LongLongUnsignedInt, |
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194 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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195 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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196 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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197 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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198 | }, |
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199 | { |
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200 | /* C */ BT Char, BT Char, BT SignedChar, BT UnsignedChar, BT ShortSignedInt, BT ShortUnsignedInt, |
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201 | BT SignedInt, BT UnsignedInt, BT LongSignedInt, BT LongUnsignedInt, BT LongLongSignedInt, BT LongLongUnsignedInt, |
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202 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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203 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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204 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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205 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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206 | }, |
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207 | { |
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208 | /* SC */ BT SignedChar, BT SignedChar, BT SignedChar, BT UnsignedChar, BT ShortSignedInt, BT ShortUnsignedInt, |
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209 | BT SignedInt, BT UnsignedInt, BT LongSignedInt, BT LongUnsignedInt, BT LongLongSignedInt, BT LongLongUnsignedInt, |
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210 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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211 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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212 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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213 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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214 | }, |
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215 | { |
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216 | /* UC */ BT UnsignedChar, BT UnsignedChar, BT UnsignedChar, BT UnsignedChar, BT ShortSignedInt, BT ShortUnsignedInt, |
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217 | BT SignedInt, BT UnsignedInt, BT LongSignedInt, BT LongUnsignedInt, BT LongLongSignedInt, BT LongLongUnsignedInt, |
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218 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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219 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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220 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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221 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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222 | }, |
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223 | { |
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224 | /* SI */ BT ShortSignedInt, BT ShortSignedInt, BT ShortSignedInt, BT ShortSignedInt, BT ShortSignedInt, BT ShortUnsignedInt, |
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225 | BT SignedInt, BT UnsignedInt, BT LongSignedInt, BT LongUnsignedInt, BT LongLongSignedInt, BT LongLongUnsignedInt, |
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226 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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227 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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228 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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229 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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230 | }, |
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231 | { |
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232 | /* SUI */ BT ShortUnsignedInt, BT ShortUnsignedInt, BT ShortUnsignedInt, BT ShortUnsignedInt, BT ShortUnsignedInt, BT ShortUnsignedInt, |
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233 | BT SignedInt, BT UnsignedInt, BT LongSignedInt, BT LongUnsignedInt, BT LongLongSignedInt, BT LongLongUnsignedInt, |
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234 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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235 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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236 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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237 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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238 | }, |
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239 | { |
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240 | /* I */ BT SignedInt, BT SignedInt, BT SignedInt, BT SignedInt, BT SignedInt, BT SignedInt, |
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241 | BT SignedInt, BT UnsignedInt, BT LongSignedInt, BT LongUnsignedInt, BT LongLongSignedInt, BT LongLongUnsignedInt, |
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242 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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243 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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244 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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245 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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246 | }, |
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247 | { |
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248 | /* UI */ BT UnsignedInt, BT UnsignedInt, BT UnsignedInt, BT UnsignedInt, BT UnsignedInt, BT UnsignedInt, |
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249 | BT UnsignedInt, BT UnsignedInt, BT LongSignedInt, BT LongUnsignedInt, BT LongLongSignedInt, BT LongLongUnsignedInt, |
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250 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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251 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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252 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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253 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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254 | }, |
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255 | { |
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256 | /* LI */ BT LongSignedInt, BT LongSignedInt, BT LongSignedInt, BT LongSignedInt, BT LongSignedInt, BT LongSignedInt, |
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257 | BT LongSignedInt, BT LongSignedInt, BT LongSignedInt, BT LongUnsignedInt, BT LongLongSignedInt, BT LongLongUnsignedInt, |
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258 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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259 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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260 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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261 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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262 | }, |
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263 | { |
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264 | /* LUI */ BT LongUnsignedInt, BT LongUnsignedInt, BT LongUnsignedInt, BT LongUnsignedInt, BT LongUnsignedInt, BT LongUnsignedInt, |
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265 | BT LongUnsignedInt, BT LongUnsignedInt, BT LongUnsignedInt, BT LongUnsignedInt, BT LongLongSignedInt, BT LongLongUnsignedInt, |
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266 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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267 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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268 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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269 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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270 | }, |
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271 | { |
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272 | /* LLI */ BT LongLongSignedInt, BT LongLongSignedInt, BT LongLongSignedInt, BT LongLongSignedInt, BT LongLongSignedInt, BT LongLongSignedInt, |
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273 | BT LongLongSignedInt, BT LongLongSignedInt, BT LongLongSignedInt, BT LongLongSignedInt, BT LongLongSignedInt, BT LongLongUnsignedInt, |
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274 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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275 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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276 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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277 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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278 | }, |
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279 | { |
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280 | /* LLUI */ BT LongLongUnsignedInt, BT LongLongUnsignedInt, BT LongLongUnsignedInt, BT LongLongUnsignedInt, BT LongLongUnsignedInt, BT LongLongUnsignedInt, |
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281 | BT LongLongUnsignedInt, BT LongLongUnsignedInt, BT LongLongUnsignedInt, BT LongLongUnsignedInt, BT LongLongUnsignedInt, BT LongLongUnsignedInt, |
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282 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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283 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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284 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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285 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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286 | }, |
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287 | { |
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288 | /* IB */ BT SignedInt128, BT SignedInt128, BT SignedInt128, BT SignedInt128, BT SignedInt128, BT SignedInt128, |
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289 | BT SignedInt128, BT SignedInt128, BT SignedInt128, BT SignedInt128, BT SignedInt128, BT SignedInt128, |
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290 | BT SignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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291 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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292 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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293 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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294 | }, |
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295 | { |
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296 | /* UIB */ BT UnsignedInt128, BT UnsignedInt128, BT UnsignedInt128, BT UnsignedInt128, BT UnsignedInt128, BT UnsignedInt128, |
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297 | BT UnsignedInt128, BT UnsignedInt128, BT UnsignedInt128, BT UnsignedInt128, BT UnsignedInt128, BT UnsignedInt128, |
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298 | BT UnsignedInt128, BT UnsignedInt128, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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299 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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300 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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301 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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302 | }, |
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303 | { |
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304 | /* _FH */ BT uFloat16, BT uFloat16, BT uFloat16, BT uFloat16, BT uFloat16, BT uFloat16, |
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305 | BT uFloat16, BT uFloat16, BT uFloat16, BT uFloat16, BT uFloat16, BT uFloat16, |
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306 | BT uFloat16, BT uFloat16, BT uFloat16, BT uFloat16Complex, BT uFloat32, BT uFloat32Complex, |
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307 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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308 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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309 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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310 | }, |
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311 | { |
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312 | /* _FH */ BT uFloat16Complex, BT uFloat16Complex, BT uFloat16Complex, BT uFloat16Complex, BT uFloat16Complex, BT uFloat16Complex, |
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313 | BT uFloat16Complex, BT uFloat16Complex, BT uFloat16Complex, BT uFloat16Complex, BT uFloat16Complex, BT uFloat16Complex, |
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314 | BT uFloat16Complex, BT uFloat16Complex, BT uFloat16Complex, BT uFloat16Complex, BT uFloat32Complex, BT uFloat32Complex, |
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315 | BT FloatComplex, BT FloatComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat64Complex, BT uFloat64Complex, |
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316 | BT DoubleComplex, BT DoubleComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat128Complex, |
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317 | BT uFloat128Complex, BT uFloat128Complex, BT LongDoubleComplex, BT LongDoubleComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
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318 | }, |
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319 | { |
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320 | /* _F */ BT uFloat32, BT uFloat32, BT uFloat32, BT uFloat32, BT uFloat32, BT uFloat32, |
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321 | BT uFloat32, BT uFloat32, BT uFloat32, BT uFloat32, BT uFloat32, BT uFloat32, |
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322 | BT uFloat32, BT uFloat32, BT uFloat32, BT uFloat32Complex, BT uFloat32, BT uFloat32Complex, |
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323 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
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324 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
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325 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
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326 | }, |
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327 | { |
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328 | /* _FC */ BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, |
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329 | BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, |
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330 | BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, BT uFloat32Complex, |
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331 | BT FloatComplex, BT FloatComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat64Complex, BT uFloat64Complex, |
---|
332 | BT DoubleComplex, BT DoubleComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat128Complex, |
---|
333 | BT uFloat128Complex, BT uFloat128Complex, BT LongDoubleComplex, BT LongDoubleComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
334 | }, |
---|
335 | { |
---|
336 | /* F */ BT Float, BT Float, BT Float, BT Float, BT Float, BT Float, |
---|
337 | BT Float, BT Float, BT Float, BT Float, BT Float, BT Float, |
---|
338 | BT Float, BT Float, BT Float, BT FloatComplex, BT Float, BT FloatComplex, |
---|
339 | BT Float, BT FloatComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
---|
340 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
---|
341 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
342 | }, |
---|
343 | { |
---|
344 | /* FC */ BT FloatComplex, BT FloatComplex, BT FloatComplex, BT FloatComplex, BT FloatComplex, BT FloatComplex, |
---|
345 | BT FloatComplex, BT FloatComplex, BT FloatComplex, BT FloatComplex, BT FloatComplex, BT FloatComplex, |
---|
346 | BT FloatComplex, BT FloatComplex, BT FloatComplex, BT FloatComplex, BT FloatComplex, BT FloatComplex, |
---|
347 | BT FloatComplex, BT FloatComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat64Complex, BT uFloat64Complex, |
---|
348 | BT DoubleComplex, BT DoubleComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat128Complex, |
---|
349 | BT uFloat128Complex, BT uFloat128Complex, BT LongDoubleComplex, BT LongDoubleComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
350 | }, |
---|
351 | { |
---|
352 | /* _FX */ BT uFloat32x, BT uFloat32x, BT uFloat32x, BT uFloat32x, BT uFloat32x, BT uFloat32x, |
---|
353 | BT uFloat32x, BT uFloat32x, BT uFloat32x, BT uFloat32x, BT uFloat32x, BT uFloat32x, |
---|
354 | BT uFloat32x, BT uFloat32x, BT uFloat32x, BT uFloat32xComplex, BT uFloat32x, BT uFloat32xComplex, |
---|
355 | BT uFloat32x, BT uFloat32xComplex, BT uFloat32x, BT uFloat32xComplex, BT uFloat64, BT uFloat64Complex, |
---|
356 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
---|
357 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
358 | }, |
---|
359 | { |
---|
360 | /* _FXC */ BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, |
---|
361 | BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, |
---|
362 | BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, |
---|
363 | BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat32xComplex, BT uFloat64Complex, BT uFloat64Complex, |
---|
364 | BT DoubleComplex, BT DoubleComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat128Complex, |
---|
365 | BT uFloat128Complex, BT uFloat128Complex, BT LongDoubleComplex, BT LongDoubleComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
366 | }, |
---|
367 | { |
---|
368 | /* FD */ BT uFloat64, BT uFloat64, BT uFloat64, BT uFloat64, BT uFloat64, BT uFloat64, |
---|
369 | BT uFloat64, BT uFloat64, BT uFloat64, BT uFloat64, BT uFloat64, BT uFloat64, |
---|
370 | BT uFloat64, BT uFloat64, BT uFloat64, BT uFloat64Complex, BT uFloat64, BT uFloat64Complex, |
---|
371 | BT uFloat64, BT uFloat64Complex, BT uFloat64, BT uFloat64Complex, BT uFloat64, BT uFloat64Complex, |
---|
372 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
---|
373 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
374 | }, |
---|
375 | { |
---|
376 | /* _FDC */ BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, |
---|
377 | BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, |
---|
378 | BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, |
---|
379 | BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, BT uFloat64Complex, |
---|
380 | BT DoubleComplex, BT DoubleComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat128Complex, |
---|
381 | BT uFloat128Complex, BT uFloat128Complex, BT LongDoubleComplex, BT LongDoubleComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
382 | }, |
---|
383 | { |
---|
384 | /* D */ BT Double, BT Double, BT Double, BT Double, BT Double, BT Double, |
---|
385 | BT Double, BT Double, BT Double, BT Double, BT Double, BT Double, |
---|
386 | BT Double, BT Double, BT Double, BT DoubleComplex, BT Double, BT DoubleComplex, |
---|
387 | BT Double, BT DoubleComplex, BT Double, BT DoubleComplex, BT Double, BT DoubleComplex, |
---|
388 | BT Double, BT DoubleComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
---|
389 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
390 | }, |
---|
391 | { |
---|
392 | /* DC */ BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, |
---|
393 | BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, |
---|
394 | BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, |
---|
395 | BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, BT DoubleComplex, |
---|
396 | BT DoubleComplex, BT DoubleComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat128Complex, |
---|
397 | BT uFloat128Complex, BT uFloat128Complex, BT LongDoubleComplex, BT LongDoubleComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
398 | }, |
---|
399 | { |
---|
400 | /* F80X */ BT uFloat64x, BT uFloat64x, BT uFloat64x, BT uFloat64x, BT uFloat64x, BT uFloat64x, |
---|
401 | BT uFloat64x, BT uFloat64x, BT uFloat64x, BT uFloat64x, BT uFloat64x, BT uFloat64x, |
---|
402 | BT uFloat64x, BT uFloat64x, BT uFloat64x, BT uFloat64xComplex, BT uFloat64x, BT uFloat64xComplex, |
---|
403 | BT uFloat64x, BT uFloat64xComplex, BT uFloat64x, BT uFloat64xComplex, BT uFloat64x, BT uFloat64xComplex, |
---|
404 | BT uFloat64x, BT uFloat64xComplex, BT uFloat64x, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
---|
405 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
406 | }, |
---|
407 | { |
---|
408 | /* _FDXC */ BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, |
---|
409 | BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, |
---|
410 | BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, |
---|
411 | BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, |
---|
412 | BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat64xComplex, BT uFloat128Complex, |
---|
413 | BT uFloat128Complex, BT uFloat128Complex, BT LongDoubleComplex, BT LongDoubleComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
414 | }, |
---|
415 | { |
---|
416 | /* F80 */ BT uuFloat80, BT uuFloat80, BT uuFloat80, BT uuFloat80, BT uuFloat80, BT uuFloat80, |
---|
417 | BT uuFloat80, BT uuFloat80, BT uuFloat80, BT uuFloat80, BT uuFloat80, BT uuFloat80, |
---|
418 | BT uuFloat80, BT uuFloat80, BT uuFloat80, BT uFloat64xComplex, BT uuFloat80, BT uFloat64xComplex, |
---|
419 | BT uuFloat80, BT uFloat64xComplex, BT uuFloat80, BT uFloat64xComplex, BT uuFloat80, BT uFloat64xComplex, |
---|
420 | BT uuFloat80, BT uFloat64xComplex, BT uuFloat80, BT uFloat64xComplex, BT uuFloat80, BT uFloat128, |
---|
421 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
422 | }, |
---|
423 | { |
---|
424 | /* _FB */ BT uFloat128, BT uFloat128, BT uFloat128, BT uFloat128, BT uFloat128, BT uFloat128, |
---|
425 | BT uFloat128, BT uFloat128, BT uFloat128, BT uFloat128, BT uFloat128, BT uFloat128, |
---|
426 | BT uFloat128, BT uFloat128, BT uFloat128, BT uFloat128Complex, BT uFloat128, BT uFloat128Complex, |
---|
427 | BT uFloat128, BT uFloat128Complex, BT uFloat128, BT uFloat128Complex, BT uFloat128, BT uFloat128Complex, |
---|
428 | BT uFloat128, BT uFloat128Complex, BT uFloat128, BT uFloat128Complex, BT uFloat128, BT uFloat128, |
---|
429 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
430 | }, |
---|
431 | { |
---|
432 | /* _FLDC */ BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, |
---|
433 | BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, |
---|
434 | BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, |
---|
435 | BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, |
---|
436 | BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, BT uFloat128Complex, |
---|
437 | BT uFloat128Complex, BT uFloat128Complex, BT LongDoubleComplex, BT LongDoubleComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
438 | }, |
---|
439 | { |
---|
440 | /* FB */ BT uuFloat128, BT uuFloat128, BT uuFloat128, BT uuFloat128, BT uuFloat128, BT uuFloat128, |
---|
441 | BT uuFloat128, BT uuFloat128, BT uuFloat128, BT uuFloat128, BT uuFloat128, BT uuFloat128, |
---|
442 | BT uuFloat128, BT uuFloat128, BT uuFloat128, BT uFloat128Complex, BT uuFloat128, BT uFloat128Complex, |
---|
443 | BT uuFloat128, BT uFloat128Complex, BT uuFloat128, BT uFloat128Complex, BT uuFloat128, BT uFloat128Complex, |
---|
444 | BT uuFloat128, BT uFloat128Complex, BT uuFloat128, BT uFloat128Complex, BT uuFloat128, BT uuFloat128, |
---|
445 | BT uFloat128Complex, BT uuFloat128, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
446 | }, |
---|
447 | { |
---|
448 | /* LD */ BT LongDouble, BT LongDouble, BT LongDouble, BT LongDouble, BT LongDouble, BT LongDouble, |
---|
449 | BT LongDouble, BT LongDouble, BT LongDouble, BT LongDouble, BT LongDouble, BT LongDouble, |
---|
450 | BT LongDouble, BT LongDouble, BT LongDouble, BT LongDoubleComplex, BT LongDouble, BT LongDoubleComplex, |
---|
451 | BT LongDouble, BT LongDoubleComplex, BT LongDouble, BT LongDoubleComplex, BT LongDouble, BT LongDoubleComplex, |
---|
452 | BT LongDouble, BT LongDoubleComplex, BT LongDouble, BT LongDoubleComplex, BT LongDouble, BT LongDouble, |
---|
453 | BT LongDoubleComplex, BT LongDouble, BT LongDouble, BT LongDoubleComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
454 | }, |
---|
455 | { |
---|
456 | /* LDC */ BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, |
---|
457 | BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, |
---|
458 | BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, |
---|
459 | BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, |
---|
460 | BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, |
---|
461 | BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT LongDoubleComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
462 | }, |
---|
463 | { |
---|
464 | /* _FBX */ BT uFloat128x, BT uFloat128x, BT uFloat128x, BT uFloat128x, BT uFloat128x, BT uFloat128x, |
---|
465 | BT uFloat128x, BT uFloat128x, BT uFloat128x, BT uFloat128x, BT uFloat128x, BT uFloat128x, |
---|
466 | BT uFloat128x, BT uFloat128x, BT uFloat128x, BT uFloat128xComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
467 | BT uFloat128x, BT uFloat128xComplex, BT uFloat128x, BT uFloat128xComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
468 | BT uFloat128x, BT uFloat128xComplex, BT uFloat128x, BT uFloat128xComplex, BT uFloat128x, BT uFloat128x, |
---|
469 | BT uFloat128xComplex, BT uFloat128x, BT uFloat128x, BT uFloat128xComplex, BT uFloat128x, BT uFloat128xComplex, |
---|
470 | }, |
---|
471 | { |
---|
472 | /* _FLDXC */ BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
473 | BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
474 | BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
475 | BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
476 | BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
477 | BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, BT uFloat128xComplex, |
---|
478 | }, |
---|
479 | }; // commonTypes |
---|
480 | #undef BT |
---|
481 | // GENERATED END |
---|
482 | static_assert( |
---|
483 | sizeof(commonTypes)/sizeof(commonTypes[0][0]) == BasicType::NUMBER_OF_BASIC_TYPES * BasicType::NUMBER_OF_BASIC_TYPES, |
---|
484 | "Each basic type kind should have a corresponding row in the combined type matrix" |
---|
485 | ); |
---|
486 | |
---|
487 | CommonType_old::CommonType_old( Type * type2, bool widenFirst, bool widenSecond, const SymTab::Indexer &indexer, TypeEnvironment &env, const OpenVarSet &openVars ) |
---|
488 | : result( 0 ), type2( type2 ), widenFirst( widenFirst ), widenSecond( widenSecond ), indexer( indexer ), env( env ), openVars( openVars ) { |
---|
489 | } |
---|
490 | |
---|
491 | void CommonType_old::postvisit( VoidType * ) {} |
---|
492 | |
---|
493 | void CommonType_old::postvisit( BasicType * basicType ) { |
---|
494 | if ( BasicType * otherBasic = dynamic_cast< BasicType * >( type2 ) ) { |
---|
495 | BasicType::Kind newType = commonTypes[ basicType->get_kind() ][ otherBasic->get_kind() ]; |
---|
496 | if ( ( ( newType == basicType->get_kind() && basicType->tq >= otherBasic->tq ) || widenFirst ) && ( ( newType == otherBasic->get_kind() && basicType->tq <= otherBasic->tq ) || widenSecond ) ) { |
---|
497 | result = new BasicType( basicType->tq | otherBasic->tq, newType ); |
---|
498 | } // if |
---|
499 | } else if ( dynamic_cast< EnumInstType * > ( type2 ) || dynamic_cast< ZeroType * >( type2 ) || dynamic_cast< OneType * >( type2 ) ) { |
---|
500 | // use signed int in lieu of the enum/zero/one type |
---|
501 | BasicType::Kind newType = commonTypes[ basicType->get_kind() ][ BasicType::SignedInt ]; |
---|
502 | if ( ( ( newType == basicType->get_kind() && basicType->tq >= type2->tq ) || widenFirst ) && ( ( newType != basicType->get_kind() && basicType->tq <= type2->tq ) || widenSecond ) ) { |
---|
503 | result = new BasicType( basicType->tq | type2->tq, newType ); |
---|
504 | } // if |
---|
505 | } // if |
---|
506 | } |
---|
507 | |
---|
508 | template< typename Pointer > |
---|
509 | void CommonType_old::getCommonWithVoidPointer( Pointer * voidPointer, Pointer * otherPointer ) { |
---|
510 | if ( TypeInstType * var = dynamic_cast< TypeInstType * >( otherPointer->get_base() ) ) { |
---|
511 | OpenVarSet::const_iterator entry = openVars.find( var->get_name() ); |
---|
512 | if ( entry != openVars.end() ) { |
---|
513 | AssertionSet need, have; |
---|
514 | WidenMode widen( widenFirst, widenSecond ); |
---|
515 | if ( entry != openVars.end() && ! env.bindVar(var, voidPointer->get_base(), entry->second, need, have, openVars, widen, indexer ) ) return; |
---|
516 | } |
---|
517 | } |
---|
518 | result = voidPointer->clone(); |
---|
519 | result->tq |= otherPointer->tq; |
---|
520 | } |
---|
521 | |
---|
522 | void CommonType_old::postvisit( PointerType * pointerType ) { |
---|
523 | if ( PointerType * otherPointer = dynamic_cast< PointerType * >( type2 ) ) { |
---|
524 | // std::cerr << "commonType: two pointers: " << pointerType << " / " << otherPointer << std::endl; |
---|
525 | if ( widenFirst && dynamic_cast< VoidType * >( otherPointer->get_base() ) && ! isFtype(pointerType->get_base()) ) { |
---|
526 | getCommonWithVoidPointer( otherPointer, pointerType ); |
---|
527 | } else if ( widenSecond && dynamic_cast< VoidType * >( pointerType->get_base() ) && ! isFtype(otherPointer->get_base()) ) { |
---|
528 | getCommonWithVoidPointer( pointerType, otherPointer ); |
---|
529 | } else if ( ( pointerType->get_base()->tq >= otherPointer->get_base()->tq || widenFirst ) |
---|
530 | && ( pointerType->get_base()->tq <= otherPointer->get_base()->tq || widenSecond ) ) { |
---|
531 | // std::cerr << "middle case" << std::endl; |
---|
532 | Type::Qualifiers tq1 = pointerType->get_base()->tq, tq2 = otherPointer->get_base()->tq; |
---|
533 | pointerType->get_base()->tq = Type::Qualifiers(); |
---|
534 | otherPointer->get_base()->tq = Type::Qualifiers(); |
---|
535 | AssertionSet have, need; |
---|
536 | OpenVarSet newOpen( openVars ); |
---|
537 | if ( unifyExact( pointerType->get_base(), otherPointer->get_base(), env, have, need, newOpen, indexer ) ) { |
---|
538 | // std::cerr << "unifyExact success" << std::endl; |
---|
539 | if ( tq1 < tq2 ) { |
---|
540 | result = pointerType->clone(); |
---|
541 | } else { |
---|
542 | result = otherPointer->clone(); |
---|
543 | } // if |
---|
544 | strict_dynamic_cast<PointerType *>(result)->base->tq = tq1 | tq2; |
---|
545 | } else { |
---|
546 | /// std::cerr << "place for ptr-to-type" << std::endl; |
---|
547 | } // if |
---|
548 | pointerType->get_base()->tq = tq1; |
---|
549 | otherPointer->get_base()->tq = tq2; |
---|
550 | } // if |
---|
551 | } else if ( widenSecond && dynamic_cast< ZeroType * >( type2 ) ) { |
---|
552 | result = pointerType->clone(); |
---|
553 | result->tq |= type2->tq; |
---|
554 | } // if |
---|
555 | } |
---|
556 | |
---|
557 | void CommonType_old::postvisit( ArrayType * ) {} |
---|
558 | |
---|
559 | void CommonType_old::postvisit( ReferenceType * refType ) { |
---|
560 | if ( ReferenceType * otherRef = dynamic_cast< ReferenceType * >( type2 ) ) { |
---|
561 | // std::cerr << "commonType: both references: " << refType << " / " << otherRef << std::endl; |
---|
562 | // std::cerr << ( refType->get_base()->tq >= otherRef->get_base()->tq || widenFirst ) << (refType->get_base()->tq <= otherRef->get_base()->tq || widenSecond) << std::endl; |
---|
563 | if ( widenFirst && dynamic_cast< VoidType * >( otherRef->get_base() ) && ! isFtype(refType->get_base()) ) { |
---|
564 | getCommonWithVoidPointer( otherRef, refType ); |
---|
565 | } else if ( widenSecond && dynamic_cast< VoidType * >( refType->get_base() ) && ! isFtype(otherRef->get_base()) ) { |
---|
566 | getCommonWithVoidPointer( refType, otherRef ); |
---|
567 | } else if ( ( refType->get_base()->tq >= otherRef->get_base()->tq || widenFirst ) |
---|
568 | && ( refType->get_base()->tq <= otherRef->get_base()->tq || widenSecond ) ) { |
---|
569 | // std::cerr << "middle case" << std::endl; |
---|
570 | Type::Qualifiers tq1 = refType->get_base()->tq, tq2 = otherRef->get_base()->tq; |
---|
571 | refType->get_base()->tq = Type::Qualifiers(); |
---|
572 | otherRef->get_base()->tq = Type::Qualifiers(); |
---|
573 | AssertionSet have, need; |
---|
574 | OpenVarSet newOpen( openVars ); |
---|
575 | if ( unifyExact( refType->get_base(), otherRef->get_base(), env, have, need, newOpen, indexer ) ) { |
---|
576 | if ( tq1 < tq2 ) { |
---|
577 | result = refType->clone(); |
---|
578 | } else { |
---|
579 | result = otherRef->clone(); |
---|
580 | } // if |
---|
581 | strict_dynamic_cast<ReferenceType *>(result)->base->tq = tq1 | tq2; |
---|
582 | } else { |
---|
583 | /// std::cerr << "place for ptr-to-type" << std::endl; |
---|
584 | } // if |
---|
585 | refType->get_base()->tq = tq1; |
---|
586 | otherRef->get_base()->tq = tq2; |
---|
587 | } // if |
---|
588 | } else if ( widenSecond && dynamic_cast< ZeroType * >( type2 ) ) { |
---|
589 | result = refType->clone(); |
---|
590 | result->tq |= type2->tq; |
---|
591 | } // if |
---|
592 | } |
---|
593 | |
---|
594 | void CommonType_old::postvisit( FunctionType * ) {} |
---|
595 | void CommonType_old::postvisit( StructInstType * ) {} |
---|
596 | void CommonType_old::postvisit( UnionInstType * ) {} |
---|
597 | |
---|
598 | void CommonType_old::postvisit( EnumInstType * enumInstType ) { |
---|
599 | if ( dynamic_cast< BasicType * >( type2 ) || dynamic_cast< ZeroType * >( type2 ) || dynamic_cast< OneType * >( type2 ) ) { |
---|
600 | // reuse BasicType, EnumInstType code by swapping type2 with enumInstType |
---|
601 | result = commonType( type2, enumInstType, widenSecond, widenFirst, indexer, env, openVars ); |
---|
602 | } // if |
---|
603 | } |
---|
604 | |
---|
605 | void CommonType_old::postvisit( TraitInstType * ) { |
---|
606 | } |
---|
607 | |
---|
608 | void CommonType_old::postvisit( TypeInstType * inst ) { |
---|
609 | if ( widenFirst ) { |
---|
610 | const NamedTypeDecl * nt = indexer.lookupType( inst->get_name() ); |
---|
611 | if ( nt ) { |
---|
612 | const TypeDecl * type = strict_dynamic_cast< const TypeDecl * >( nt ); |
---|
613 | if ( type->get_base() ) { |
---|
614 | Type::Qualifiers tq1 = inst->tq, tq2 = type2->tq; |
---|
615 | AssertionSet have, need; |
---|
616 | OpenVarSet newOpen( openVars ); |
---|
617 | type2->tq = Type::Qualifiers(); |
---|
618 | type->get_base()->tq = tq1; |
---|
619 | if ( unifyExact( type->get_base(), type2, env, have, need, newOpen, indexer ) ) { |
---|
620 | result = type2->clone(); |
---|
621 | result->tq = tq1 | tq2; |
---|
622 | } // if |
---|
623 | type2->tq = tq2; |
---|
624 | type->get_base()->tq = Type::Qualifiers(); |
---|
625 | } // if |
---|
626 | } // if |
---|
627 | } // if |
---|
628 | } |
---|
629 | |
---|
630 | void CommonType_old::postvisit( TupleType * ) {} |
---|
631 | void CommonType_old::postvisit( VarArgsType * ) {} |
---|
632 | |
---|
633 | void CommonType_old::postvisit( ZeroType * zeroType ) { |
---|
634 | if ( widenFirst ) { |
---|
635 | if ( dynamic_cast< BasicType * >( type2 ) || dynamic_cast< PointerType * >( type2 ) || dynamic_cast< EnumInstType * >( type2 ) ) { |
---|
636 | if ( widenSecond || zeroType->tq <= type2->tq ) { |
---|
637 | result = type2->clone(); |
---|
638 | result->tq |= zeroType->tq; |
---|
639 | } |
---|
640 | } else if ( widenSecond && dynamic_cast< OneType * >( type2 ) ) { |
---|
641 | result = new BasicType( zeroType->tq, BasicType::SignedInt ); |
---|
642 | result->tq |= type2->tq; |
---|
643 | } |
---|
644 | } |
---|
645 | } |
---|
646 | |
---|
647 | void CommonType_old::postvisit( OneType * oneType ) { |
---|
648 | if ( widenFirst ) { |
---|
649 | if ( dynamic_cast< BasicType * >( type2 ) || dynamic_cast< EnumInstType * >( type2 ) ) { |
---|
650 | if ( widenSecond || oneType->tq <= type2->tq ) { |
---|
651 | result = type2->clone(); |
---|
652 | result->tq |= oneType->tq; |
---|
653 | } |
---|
654 | } else if ( widenSecond && dynamic_cast< ZeroType * >( type2 ) ) { |
---|
655 | result = new BasicType( oneType->tq, BasicType::SignedInt ); |
---|
656 | result->tq |= type2->tq; |
---|
657 | } |
---|
658 | } |
---|
659 | } |
---|
660 | |
---|
661 | class CommonType_new final : public ast::WithShortCircuiting { |
---|
662 | const ast::Type * type2; |
---|
663 | WidenMode widen; |
---|
664 | const ast::SymbolTable & symtab; |
---|
665 | ast::TypeEnvironment & tenv; |
---|
666 | const ast::OpenVarSet & open; |
---|
667 | public: |
---|
668 | ast::ptr< ast::Type > result; |
---|
669 | |
---|
670 | CommonType_new( |
---|
671 | const ast::Type * t2, WidenMode w, const ast::SymbolTable & st, |
---|
672 | ast::TypeEnvironment & env, const ast::OpenVarSet & o ) |
---|
673 | : type2( t2 ), widen( w ), symtab( st ), tenv( env ), open( o ), result() {} |
---|
674 | |
---|
675 | void previsit( const ast::Node * ) { visit_children = false; } |
---|
676 | |
---|
677 | void postvisit( const ast::VoidType * ) {} |
---|
678 | |
---|
679 | void postvisit( const ast::BasicType * basic ) { |
---|
680 | if ( auto basic2 = dynamic_cast< const ast::BasicType * >( type2 ) ) { |
---|
681 | #warning remove casts when `commonTypes` moved to new AST |
---|
682 | ast::BasicType::Kind kind = (ast::BasicType::Kind)(int)commonTypes[ (BasicType::Kind)(int)basic->kind ][ (BasicType::Kind)(int)basic2->kind ]; |
---|
683 | if ( |
---|
684 | ( ( kind == basic->kind && basic->qualifiers >= basic2->qualifiers ) |
---|
685 | || widen.first ) |
---|
686 | && ( ( kind == basic2->kind && basic->qualifiers <= basic2->qualifiers ) |
---|
687 | || widen.second ) |
---|
688 | ) { |
---|
689 | result = new ast::BasicType{ kind, basic->qualifiers | basic2->qualifiers }; |
---|
690 | } |
---|
691 | } else if ( |
---|
692 | dynamic_cast< const ast::EnumInstType * >( type2 ) |
---|
693 | || dynamic_cast< const ast::ZeroType * >( type2 ) |
---|
694 | || dynamic_cast< const ast::OneType * >( type2 ) |
---|
695 | ) { |
---|
696 | #warning remove casts when `commonTypes` moved to new AST |
---|
697 | ast::BasicType::Kind kind = (ast::BasicType::Kind)(int)commonTypes[ (BasicType::Kind)(int)basic->kind ][ (BasicType::Kind)(int)ast::BasicType::SignedInt ]; |
---|
698 | if ( |
---|
699 | ( ( kind == basic->kind && basic->qualifiers >= type2->qualifiers ) |
---|
700 | || widen.first ) |
---|
701 | && ( ( kind != basic->kind && basic->qualifiers <= type2->qualifiers ) |
---|
702 | || widen.second ) |
---|
703 | ) { |
---|
704 | result = new ast::BasicType{ kind, basic->qualifiers | type2->qualifiers }; |
---|
705 | } |
---|
706 | } |
---|
707 | } |
---|
708 | |
---|
709 | private: |
---|
710 | template< typename Pointer > |
---|
711 | void getCommonWithVoidPointer( const Pointer * voidPtr, const Pointer * oPtr ) { |
---|
712 | const ast::Type * base = oPtr->base; |
---|
713 | if ( auto var = dynamic_cast< const ast::TypeInstType * >( base ) ) { |
---|
714 | auto entry = open.find( var->name ); |
---|
715 | if ( entry != open.end() ) { |
---|
716 | ast::AssertionSet need, have; |
---|
717 | if ( ! tenv.bindVar( |
---|
718 | var, voidPtr->base, entry->second, need, have, open, widen, symtab ) |
---|
719 | ) return; |
---|
720 | } |
---|
721 | } |
---|
722 | result = voidPtr; |
---|
723 | add_qualifiers( result, oPtr->qualifiers ); |
---|
724 | } |
---|
725 | |
---|
726 | public: |
---|
727 | void postvisit( const ast::PointerType * pointer ) { |
---|
728 | if ( auto pointer2 = dynamic_cast< const ast::PointerType * >( type2 ) ) { |
---|
729 | if ( |
---|
730 | widen.first |
---|
731 | && pointer2->base.as< ast::VoidType >() |
---|
732 | && ! ast::isFtype( pointer->base ) |
---|
733 | ) { |
---|
734 | getCommonWithVoidPointer( pointer2, pointer ); |
---|
735 | } else if ( |
---|
736 | widen.second |
---|
737 | && pointer->base.as< ast::VoidType >() |
---|
738 | && ! ast::isFtype( pointer2->base ) |
---|
739 | ) { |
---|
740 | getCommonWithVoidPointer( pointer, pointer2 ); |
---|
741 | } else if ( |
---|
742 | ( pointer->base->qualifiers >= pointer2->base->qualifiers || widen.first ) |
---|
743 | && ( pointer->base->qualifiers <= pointer2->base->qualifiers || widen.second ) |
---|
744 | ) { |
---|
745 | ast::CV::Qualifiers q1 = pointer->base->qualifiers; |
---|
746 | ast::CV::Qualifiers q2 = pointer2->base->qualifiers; |
---|
747 | |
---|
748 | // force t{1,2} to be cloned if their qualifiers must be stripped, so that |
---|
749 | // pointer{,2}->base are unchanged |
---|
750 | ast::ptr< ast::Type > t1{ pointer->base }, t2{ pointer2->base }; |
---|
751 | reset_qualifiers( t1 ); |
---|
752 | reset_qualifiers( t2 ); |
---|
753 | |
---|
754 | ast::AssertionSet have, need; |
---|
755 | ast::OpenVarSet newOpen{ open }; |
---|
756 | if ( unifyExact( t1, t2, tenv, have, need, newOpen, noWiden(), symtab ) ) { |
---|
757 | result = pointer; |
---|
758 | if ( q1.val != q2.val ) { |
---|
759 | // reset result->base->qualifiers to be union of two base qualifiers |
---|
760 | strict_dynamic_cast< ast::PointerType * >( |
---|
761 | result.get_and_mutate() |
---|
762 | )->base.get_and_mutate()->qualifiers = q1 | q2; |
---|
763 | } |
---|
764 | } |
---|
765 | } |
---|
766 | } else if ( widen.second && dynamic_cast< const ast::ZeroType * >( type2 ) ) { |
---|
767 | result = pointer; |
---|
768 | add_qualifiers( result, type2->qualifiers ); |
---|
769 | } |
---|
770 | } |
---|
771 | |
---|
772 | void postvisit( const ast::ArrayType * ) {} |
---|
773 | |
---|
774 | void postvisit( const ast::ReferenceType * ref ) { |
---|
775 | if ( auto ref2 = dynamic_cast< const ast::ReferenceType * >( type2 ) ) { |
---|
776 | if ( |
---|
777 | widen.first && ref2->base.as< ast::VoidType >() && ! ast::isFtype( ref->base ) |
---|
778 | ) { |
---|
779 | getCommonWithVoidPointer( ref2, ref ); |
---|
780 | } else if ( |
---|
781 | widen.second && ref->base.as< ast::VoidType>() && ! ast::isFtype( ref2->base ) |
---|
782 | ) { |
---|
783 | getCommonWithVoidPointer( ref, ref2 ); |
---|
784 | } else if ( |
---|
785 | ( ref->base->qualifiers >= ref2->base->qualifiers || widen.first ) |
---|
786 | && ( ref->base->qualifiers <= ref2->base->qualifiers || widen.second ) |
---|
787 | ) { |
---|
788 | ast::CV::Qualifiers q1 = ref->base->qualifiers, q2 = ref2->base->qualifiers; |
---|
789 | |
---|
790 | // force t{1,2} to be cloned if their qualifiers must be stripped, so that |
---|
791 | // ref{,2}->base are unchanged |
---|
792 | ast::ptr< ast::Type > t1{ ref->base }, t2{ ref2->base }; |
---|
793 | reset_qualifiers( t1 ); |
---|
794 | reset_qualifiers( t2 ); |
---|
795 | |
---|
796 | ast::AssertionSet have, need; |
---|
797 | ast::OpenVarSet newOpen{ open }; |
---|
798 | if ( unifyExact( t1, t2, tenv, have, need, newOpen, noWiden(), symtab ) ) { |
---|
799 | result = ref; |
---|
800 | if ( q1.val != q2.val ) { |
---|
801 | // reset result->base->qualifiers to be union of two base qualifiers |
---|
802 | strict_dynamic_cast< ast::ReferenceType * >( |
---|
803 | result.get_and_mutate() |
---|
804 | )->base.get_and_mutate()->qualifiers = q1 | q2; |
---|
805 | } |
---|
806 | } |
---|
807 | } |
---|
808 | } else if ( widen.second && dynamic_cast< const ast::ZeroType * >( type2 ) ) { |
---|
809 | result = ref; |
---|
810 | add_qualifiers( result, type2->qualifiers ); |
---|
811 | } |
---|
812 | } |
---|
813 | |
---|
814 | void postvisit( const ast::FunctionType * ) {} |
---|
815 | |
---|
816 | void postvisit( const ast::StructInstType * ) {} |
---|
817 | |
---|
818 | void postvisit( const ast::UnionInstType * ) {} |
---|
819 | |
---|
820 | void postvisit( const ast::EnumInstType * enumInst ) { |
---|
821 | if ( |
---|
822 | dynamic_cast< const ast::BasicType * >( type2 ) |
---|
823 | || dynamic_cast< const ast::ZeroType * >( type2 ) |
---|
824 | || dynamic_cast< const ast::OneType * >( type2 ) |
---|
825 | ) { |
---|
826 | // reuse BasicType/EnumInstType common type by swapping |
---|
827 | result = commonType( type2, enumInst, widen, symtab, tenv, open ); |
---|
828 | } |
---|
829 | } |
---|
830 | |
---|
831 | void postvisit( const ast::TraitInstType * ) {} |
---|
832 | |
---|
833 | void postvisit( const ast::TypeInstType * inst ) { |
---|
834 | if ( ! widen.first ) return; |
---|
835 | if ( const ast::NamedTypeDecl * nt = symtab.lookupType( inst->name ) ) { |
---|
836 | if ( const ast::Type * base = |
---|
837 | strict_dynamic_cast< const ast::TypeDecl * >( nt )->base |
---|
838 | ) { |
---|
839 | ast::CV::Qualifiers q1 = inst->qualifiers, q2 = type2->qualifiers; |
---|
840 | |
---|
841 | // force t{1,2} to be cloned if their qualifiers must be mutated |
---|
842 | ast::ptr< ast::Type > t1{ base }, t2{ type2 }; |
---|
843 | reset_qualifiers( t1, q1 ); |
---|
844 | reset_qualifiers( t2 ); |
---|
845 | |
---|
846 | ast::AssertionSet have, need; |
---|
847 | ast::OpenVarSet newOpen{ open }; |
---|
848 | if ( unifyExact( t1, t2, tenv, have, need, newOpen, noWiden(), symtab ) ) { |
---|
849 | result = type2; |
---|
850 | reset_qualifiers( result, q1 | q2 ); |
---|
851 | } |
---|
852 | } |
---|
853 | } |
---|
854 | } |
---|
855 | |
---|
856 | void postvisit( const ast::TupleType * ) {} |
---|
857 | |
---|
858 | void postvisit( const ast::VarArgsType * ) {} |
---|
859 | |
---|
860 | void postvisit( const ast::ZeroType * zero ) { |
---|
861 | if ( ! widen.first ) return; |
---|
862 | if ( |
---|
863 | dynamic_cast< const ast::BasicType * >( type2 ) |
---|
864 | || dynamic_cast< const ast::PointerType * >( type2 ) |
---|
865 | || dynamic_cast< const ast::EnumInstType * >( type2 ) |
---|
866 | ) { |
---|
867 | if ( widen.second || zero->qualifiers <= type2->qualifiers ) { |
---|
868 | result = type2; |
---|
869 | add_qualifiers( result, zero->qualifiers ); |
---|
870 | } |
---|
871 | } else if ( widen.second && dynamic_cast< const ast::OneType * >( type2 ) ) { |
---|
872 | result = new ast::BasicType{ |
---|
873 | ast::BasicType::SignedInt, zero->qualifiers | type2->qualifiers }; |
---|
874 | } |
---|
875 | } |
---|
876 | |
---|
877 | void postvisit( const ast::OneType * one ) { |
---|
878 | if ( ! widen.first ) return; |
---|
879 | if ( |
---|
880 | dynamic_cast< const ast::BasicType * >( type2 ) |
---|
881 | || dynamic_cast< const ast::EnumInstType * >( type2 ) |
---|
882 | ) { |
---|
883 | if ( widen.second || one->qualifiers <= type2->qualifiers ) { |
---|
884 | result = type2; |
---|
885 | add_qualifiers( result, one->qualifiers ); |
---|
886 | } |
---|
887 | } else if ( widen.second && dynamic_cast< const ast::ZeroType * >( type2 ) ) { |
---|
888 | result = new ast::BasicType{ |
---|
889 | ast::BasicType::SignedInt, one->qualifiers | type2->qualifiers }; |
---|
890 | } |
---|
891 | } |
---|
892 | |
---|
893 | }; |
---|
894 | |
---|
895 | namespace { |
---|
896 | ast::ptr< ast::Type > handleReference( |
---|
897 | const ast::ptr< ast::Type > & t1, const ast::ptr< ast::Type > & t2, WidenMode widen, |
---|
898 | const ast::SymbolTable & symtab, ast::TypeEnvironment & env, |
---|
899 | const ast::OpenVarSet & open |
---|
900 | ) { |
---|
901 | ast::ptr<ast::Type> common; |
---|
902 | ast::AssertionSet have, need; |
---|
903 | ast::OpenVarSet newOpen{ open }; |
---|
904 | |
---|
905 | // need unify to bind type variables |
---|
906 | if ( unify( t1, t2, env, have, need, newOpen, symtab, common ) ) { |
---|
907 | ast::CV::Qualifiers q1 = t1->qualifiers, q2 = t2->qualifiers; |
---|
908 | PRINT( |
---|
909 | std::cerr << "unify success: " << widenFirst << " " << widenSecond << std::endl; |
---|
910 | ) |
---|
911 | if ( ( widen.first || q2 <= q1 ) && ( widen.second || q1 <= q2 ) ) { |
---|
912 | PRINT( |
---|
913 | std::cerr << "widen okay" << std::endl; |
---|
914 | ) |
---|
915 | add_qualifiers( common, q1 | q2 ); |
---|
916 | return common; |
---|
917 | } |
---|
918 | } |
---|
919 | |
---|
920 | PRINT( |
---|
921 | std::cerr << "exact unify failed: " << t1 << " " << t2 << std::endl; |
---|
922 | ) |
---|
923 | return { nullptr }; |
---|
924 | } |
---|
925 | } |
---|
926 | |
---|
927 | ast::ptr< ast::Type > commonType( |
---|
928 | const ast::ptr< ast::Type > & type1, const ast::ptr< ast::Type > & type2, |
---|
929 | WidenMode widen, const ast::SymbolTable & symtab, ast::TypeEnvironment & env, |
---|
930 | const ast::OpenVarSet & open |
---|
931 | ) { |
---|
932 | unsigned depth1 = type1->referenceDepth(); |
---|
933 | unsigned depth2 = type2->referenceDepth(); |
---|
934 | |
---|
935 | if ( depth1 != depth2 ) { // implies depth1 > 0 || depth2 > 0 |
---|
936 | PRINT( |
---|
937 | std::cerr << "reference depth diff: " << (depth1-depth2) << std::endl; |
---|
938 | ) |
---|
939 | ast::ptr< ast::Type > result; |
---|
940 | const ast::ReferenceType * ref1 = type1.as< ast::ReferenceType >(); |
---|
941 | const ast::ReferenceType * ref2 = type1.as< ast::ReferenceType >(); |
---|
942 | |
---|
943 | if ( depth1 > depth2 ) { |
---|
944 | assert( ref1 ); |
---|
945 | result = handleReference( ref1->base, type2, widen, symtab, env, open ); |
---|
946 | } else { // implies depth1 < depth2 |
---|
947 | assert( ref2 ); |
---|
948 | result = handleReference( type1, ref2->base, widen, symtab, env, open ); |
---|
949 | } |
---|
950 | |
---|
951 | if ( result && ref1 ) { |
---|
952 | // formal is reference, so result should be reference |
---|
953 | PRINT( |
---|
954 | std::cerr << "formal is reference; result should be reference" << std::endl; |
---|
955 | ) |
---|
956 | result = new ast::ReferenceType{ result, ref1->qualifiers }; |
---|
957 | } |
---|
958 | |
---|
959 | PRINT( |
---|
960 | std::cerr << "common type of reference [" << type1 << "] and [" << type2 << "] is " |
---|
961 | "[" << result << "]" << std::endl; |
---|
962 | ) |
---|
963 | return result; |
---|
964 | } |
---|
965 | // otherwise both are reference types of the same depth and this is handled by the visitor |
---|
966 | ast::Pass<CommonType_new> visitor{ type2, widen, symtab, env, open }; |
---|
967 | type1->accept( visitor ); |
---|
968 | ast::ptr< ast::Type > result = visitor.pass.result; |
---|
969 | |
---|
970 | // handling for opaque type declarations (?) |
---|
971 | if ( ! result && widen.second ) { |
---|
972 | if ( const ast::TypeInstType * inst = type2.as< ast::TypeInstType >() ) { |
---|
973 | if ( const ast::NamedTypeDecl * nt = symtab.lookupType( inst->name ) ) { |
---|
974 | auto type = strict_dynamic_cast< const ast::TypeDecl * >( nt ); |
---|
975 | if ( type->base ) { |
---|
976 | ast::CV::Qualifiers q1 = type1->qualifiers, q2 = type2->qualifiers; |
---|
977 | ast::AssertionSet have, need; |
---|
978 | ast::OpenVarSet newOpen{ open }; |
---|
979 | |
---|
980 | // force t{1,2} to be cloned if its qualifiers must be stripped, so that |
---|
981 | // type1 and type->base are left unchanged; calling convention forces |
---|
982 | // {type1,type->base}->strong_ref >= 1 |
---|
983 | ast::ptr<ast::Type> t1{ type1 }, t2{ type->base }; |
---|
984 | reset_qualifiers( t1 ); |
---|
985 | reset_qualifiers( t2, q1 ); |
---|
986 | |
---|
987 | if ( unifyExact( t1, t2, env, have, need, newOpen, noWiden(), symtab ) ) { |
---|
988 | result = t1; |
---|
989 | reset_qualifiers( result, q1 | q2 ); |
---|
990 | } |
---|
991 | } |
---|
992 | } |
---|
993 | } |
---|
994 | } |
---|
995 | |
---|
996 | return result; |
---|
997 | } |
---|
998 | |
---|
999 | } // namespace ResolvExpr |
---|
1000 | |
---|
1001 | // Local Variables: // |
---|
1002 | // tab-width: 4 // |
---|
1003 | // mode: c++ // |
---|
1004 | // compile-command: "make install" // |
---|
1005 | // End: // |
---|