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 | // Mangler.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 21:40:29 2015 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Sat Feb 15 13:55:12 2020 |
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13 | // Update Count : 33 |
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14 | // |
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15 | #include "Mangler.h" |
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16 | |
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17 | #include <algorithm> // for copy, transform |
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18 | #include <cassert> // for assert, assertf |
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19 | #include <functional> // for const_mem_fun_t, mem_fun |
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20 | #include <iterator> // for ostream_iterator, back_insert_ite... |
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21 | #include <list> // for _List_iterator, list, _List_const... |
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22 | #include <string> // for string, char_traits, operator<< |
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23 | |
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24 | #include "CodeGen/OperatorTable.h" // for OperatorInfo, operatorLookup |
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25 | #include "Common/PassVisitor.h" |
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26 | #include "Common/SemanticError.h" // for SemanticError |
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27 | #include "Common/utility.h" // for toString |
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28 | #include "ResolvExpr/TypeEnvironment.h" // for TypeEnvironment |
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29 | #include "SynTree/LinkageSpec.h" // for Spec, isOverridable, AutoGen, Int... |
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30 | #include "SynTree/Declaration.h" // for TypeDecl, DeclarationWithType |
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31 | #include "SynTree/Expression.h" // for TypeExpr, Expression, operator<< |
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32 | #include "SynTree/Type.h" // for Type, ReferenceToType, Type::Fora... |
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33 | |
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34 | #include "AST/Pass.hpp" |
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35 | |
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36 | namespace SymTab { |
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37 | namespace Mangler { |
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38 | namespace { |
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39 | /// Mangles names to a unique C identifier |
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40 | struct Mangler_old : public WithShortCircuiting, public WithVisitorRef<Mangler_old>, public WithGuards { |
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41 | Mangler_old( bool mangleOverridable, bool typeMode, bool mangleGenericParams ); |
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42 | Mangler_old( const Mangler_old & ) = delete; |
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43 | |
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44 | void previsit( const BaseSyntaxNode * ) { visit_children = false; } |
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45 | |
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46 | void postvisit( const ObjectDecl * declaration ); |
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47 | void postvisit( const FunctionDecl * declaration ); |
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48 | void postvisit( const TypeDecl * declaration ); |
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49 | |
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50 | void postvisit( const VoidType * voidType ); |
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51 | void postvisit( const BasicType * basicType ); |
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52 | void postvisit( const PointerType * pointerType ); |
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53 | void postvisit( const ArrayType * arrayType ); |
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54 | void postvisit( const ReferenceType * refType ); |
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55 | void postvisit( const FunctionType * functionType ); |
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56 | void postvisit( const StructInstType * aggregateUseType ); |
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57 | void postvisit( const UnionInstType * aggregateUseType ); |
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58 | void postvisit( const EnumInstType * aggregateUseType ); |
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59 | void postvisit( const TypeInstType * aggregateUseType ); |
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60 | void postvisit( const TraitInstType * inst ); |
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61 | void postvisit( const TupleType * tupleType ); |
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62 | void postvisit( const VarArgsType * varArgsType ); |
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63 | void postvisit( const ZeroType * zeroType ); |
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64 | void postvisit( const OneType * oneType ); |
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65 | void postvisit( const QualifiedType * qualType ); |
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66 | |
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67 | std::string get_mangleName() { return mangleName.str(); } |
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68 | private: |
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69 | std::ostringstream mangleName; ///< Mangled name being constructed |
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70 | typedef std::map< std::string, std::pair< int, int > > VarMapType; |
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71 | VarMapType varNums; ///< Map of type variables to indices |
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72 | int nextVarNum; ///< Next type variable index |
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73 | bool isTopLevel; ///< Is the Mangler at the top level |
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74 | bool mangleOverridable; ///< Specially mangle overridable built-in methods |
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75 | bool typeMode; ///< Produce a unique mangled name for a type |
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76 | bool mangleGenericParams; ///< Include generic parameters in name mangling if true |
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77 | bool inFunctionType = false; ///< Include type qualifiers if false. |
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78 | bool inQualifiedType = false; ///< Add start/end delimiters around qualified type |
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79 | |
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80 | public: |
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81 | Mangler_old( bool mangleOverridable, bool typeMode, bool mangleGenericParams, |
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82 | int nextVarNum, const VarMapType& varNums ); |
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83 | |
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84 | private: |
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85 | void mangleDecl( const DeclarationWithType * declaration ); |
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86 | void mangleRef( const ReferenceToType * refType, std::string prefix ); |
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87 | |
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88 | void printQualifiers( const Type *type ); |
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89 | }; // Mangler_old |
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90 | } // namespace |
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91 | |
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92 | std::string mangle( const BaseSyntaxNode * decl, bool mangleOverridable, bool typeMode, bool mangleGenericParams ) { |
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93 | PassVisitor<Mangler_old> mangler( mangleOverridable, typeMode, mangleGenericParams ); |
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94 | maybeAccept( decl, mangler ); |
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95 | return mangler.pass.get_mangleName(); |
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96 | } |
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97 | |
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98 | std::string mangleType( const Type * ty ) { |
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99 | PassVisitor<Mangler_old> mangler( false, true, true ); |
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100 | maybeAccept( ty, mangler ); |
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101 | return mangler.pass.get_mangleName(); |
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102 | } |
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103 | |
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104 | std::string mangleConcrete( const Type * ty ) { |
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105 | PassVisitor<Mangler_old> mangler( false, false, false ); |
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106 | maybeAccept( ty, mangler ); |
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107 | return mangler.pass.get_mangleName(); |
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108 | } |
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109 | |
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110 | namespace { |
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111 | Mangler_old::Mangler_old( bool mangleOverridable, bool typeMode, bool mangleGenericParams ) |
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112 | : nextVarNum( 0 ), isTopLevel( true ), |
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113 | mangleOverridable( mangleOverridable ), typeMode( typeMode ), |
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114 | mangleGenericParams( mangleGenericParams ) {} |
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115 | |
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116 | Mangler_old::Mangler_old( bool mangleOverridable, bool typeMode, bool mangleGenericParams, |
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117 | int nextVarNum, const VarMapType& varNums ) |
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118 | : varNums( varNums ), nextVarNum( nextVarNum ), isTopLevel( false ), |
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119 | mangleOverridable( mangleOverridable ), typeMode( typeMode ), |
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120 | mangleGenericParams( mangleGenericParams ) {} |
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121 | |
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122 | void Mangler_old::mangleDecl( const DeclarationWithType * declaration ) { |
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123 | bool wasTopLevel = isTopLevel; |
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124 | if ( isTopLevel ) { |
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125 | varNums.clear(); |
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126 | nextVarNum = 0; |
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127 | isTopLevel = false; |
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128 | } // if |
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129 | mangleName << Encoding::manglePrefix; |
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130 | const CodeGen::OperatorInfo * opInfo = CodeGen::operatorLookup( declaration->get_name() ); |
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131 | if ( opInfo ) { |
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132 | mangleName << opInfo->outputName.size() << opInfo->outputName; |
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133 | } else { |
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134 | mangleName << declaration->name.size() << declaration->name; |
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135 | } // if |
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136 | maybeAccept( declaration->get_type(), *visitor ); |
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137 | if ( mangleOverridable && LinkageSpec::isOverridable( declaration->get_linkage() ) ) { |
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138 | // want to be able to override autogenerated and intrinsic routines, |
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139 | // so they need a different name mangling |
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140 | if ( declaration->get_linkage() == LinkageSpec::AutoGen ) { |
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141 | mangleName << Encoding::autogen; |
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142 | } else if ( declaration->get_linkage() == LinkageSpec::Intrinsic ) { |
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143 | mangleName << Encoding::intrinsic; |
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144 | } else { |
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145 | // if we add another kind of overridable function, this has to change |
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146 | assert( false && "unknown overrideable linkage" ); |
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147 | } // if |
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148 | } |
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149 | isTopLevel = wasTopLevel; |
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150 | } |
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151 | |
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152 | void Mangler_old::postvisit( const ObjectDecl * declaration ) { |
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153 | mangleDecl( declaration ); |
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154 | } |
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155 | |
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156 | void Mangler_old::postvisit( const FunctionDecl * declaration ) { |
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157 | mangleDecl( declaration ); |
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158 | } |
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159 | |
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160 | void Mangler_old::postvisit( const VoidType * voidType ) { |
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161 | printQualifiers( voidType ); |
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162 | mangleName << Encoding::void_t; |
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163 | } |
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164 | |
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165 | void Mangler_old::postvisit( const BasicType * basicType ) { |
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166 | printQualifiers( basicType ); |
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167 | assertf( basicType->kind < BasicType::NUMBER_OF_BASIC_TYPES, "Unhandled basic type: %d", basicType->kind ); |
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168 | mangleName << Encoding::basicTypes[ basicType->kind ]; |
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169 | } |
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170 | |
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171 | void Mangler_old::postvisit( const PointerType * pointerType ) { |
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172 | printQualifiers( pointerType ); |
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173 | // mangle void (*f)() and void f() to the same name to prevent overloading on functions and function pointers |
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174 | if ( ! dynamic_cast<FunctionType *>( pointerType->base ) ) mangleName << Encoding::pointer; |
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175 | maybeAccept( pointerType->base, *visitor ); |
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176 | } |
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177 | |
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178 | void Mangler_old::postvisit( const ArrayType * arrayType ) { |
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179 | // TODO: encode dimension |
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180 | printQualifiers( arrayType ); |
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181 | mangleName << Encoding::array << "0"; |
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182 | maybeAccept( arrayType->base, *visitor ); |
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183 | } |
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184 | |
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185 | void Mangler_old::postvisit( const ReferenceType * refType ) { |
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186 | // don't print prefix (e.g. 'R') for reference types so that references and non-references do not overload. |
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187 | // Further, do not print the qualifiers for a reference type (but do run printQualifers because of TypeDecls, etc.), |
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188 | // by pretending every reference type is a function parameter. |
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189 | GuardValue( inFunctionType ); |
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190 | inFunctionType = true; |
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191 | printQualifiers( refType ); |
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192 | maybeAccept( refType->base, *visitor ); |
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193 | } |
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194 | |
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195 | namespace { |
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196 | inline std::list< Type* > getTypes( const std::list< DeclarationWithType* > decls ) { |
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197 | std::list< Type* > ret; |
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198 | std::transform( decls.begin(), decls.end(), std::back_inserter( ret ), |
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199 | std::mem_fun( &DeclarationWithType::get_type ) ); |
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200 | return ret; |
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201 | } |
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202 | } |
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203 | |
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204 | void Mangler_old::postvisit( const FunctionType * functionType ) { |
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205 | printQualifiers( functionType ); |
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206 | mangleName << Encoding::function; |
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207 | // turn on inFunctionType so that printQualifiers does not print most qualifiers for function parameters, |
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208 | // since qualifiers on outermost parameter type do not differentiate function types, e.g., |
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209 | // void (*)(const int) and void (*)(int) are the same type, but void (*)(const int *) and void (*)(int *) are different |
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210 | GuardValue( inFunctionType ); |
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211 | inFunctionType = true; |
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212 | std::list< Type* > returnTypes = getTypes( functionType->returnVals ); |
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213 | if (returnTypes.empty()) mangleName << Encoding::void_t; |
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214 | else acceptAll( returnTypes, *visitor ); |
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215 | mangleName << "_"; |
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216 | std::list< Type* > paramTypes = getTypes( functionType->parameters ); |
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217 | acceptAll( paramTypes, *visitor ); |
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218 | mangleName << "_"; |
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219 | } |
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220 | |
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221 | void Mangler_old::mangleRef( const ReferenceToType * refType, std::string prefix ) { |
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222 | printQualifiers( refType ); |
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223 | |
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224 | mangleName << prefix << refType->name.length() << refType->name; |
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225 | |
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226 | if ( mangleGenericParams ) { |
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227 | const std::list< Expression* > & params = refType->parameters; |
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228 | if ( ! params.empty() ) { |
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229 | mangleName << "_"; |
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230 | for ( const Expression * param : params ) { |
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231 | const TypeExpr * paramType = dynamic_cast< const TypeExpr * >( param ); |
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232 | assertf(paramType, "Aggregate parameters should be type expressions: %s", toCString(param)); |
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233 | maybeAccept( paramType->type, *visitor ); |
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234 | } |
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235 | mangleName << "_"; |
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236 | } |
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237 | } |
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238 | } |
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239 | |
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240 | void Mangler_old::postvisit( const StructInstType * aggregateUseType ) { |
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241 | mangleRef( aggregateUseType, Encoding::struct_t ); |
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242 | } |
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243 | |
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244 | void Mangler_old::postvisit( const UnionInstType * aggregateUseType ) { |
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245 | mangleRef( aggregateUseType, Encoding::union_t ); |
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246 | } |
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247 | |
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248 | void Mangler_old::postvisit( const EnumInstType * aggregateUseType ) { |
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249 | mangleRef( aggregateUseType, Encoding::enum_t ); |
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250 | } |
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251 | |
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252 | void Mangler_old::postvisit( const TypeInstType * typeInst ) { |
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253 | VarMapType::iterator varNum = varNums.find( typeInst->get_name() ); |
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254 | if ( varNum == varNums.end() ) { |
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255 | mangleRef( typeInst, Encoding::type ); |
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256 | } else { |
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257 | printQualifiers( typeInst ); |
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258 | // Note: Can't use name here, since type variable names do not actually disambiguate a function, e.g. |
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259 | // forall(dtype T) void f(T); |
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260 | // forall(dtype S) void f(S); |
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261 | // are equivalent and should mangle the same way. This is accomplished by numbering the type variables when they |
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262 | // are first found and prefixing with the appropriate encoding for the type class. |
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263 | assertf( varNum->second.second < TypeDecl::NUMBER_OF_KINDS, "Unhandled type variable kind: %d", varNum->second.second ); |
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264 | mangleName << Encoding::typeVariables[varNum->second.second] << varNum->second.first; |
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265 | } // if |
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266 | } |
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267 | |
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268 | void Mangler_old::postvisit( const TraitInstType * inst ) { |
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269 | printQualifiers( inst ); |
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270 | mangleName << inst->name.size() << inst->name; |
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271 | } |
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272 | |
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273 | void Mangler_old::postvisit( const TupleType * tupleType ) { |
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274 | printQualifiers( tupleType ); |
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275 | mangleName << Encoding::tuple << tupleType->types.size(); |
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276 | acceptAll( tupleType->types, *visitor ); |
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277 | } |
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278 | |
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279 | void Mangler_old::postvisit( const VarArgsType * varArgsType ) { |
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280 | printQualifiers( varArgsType ); |
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281 | static const std::string vargs = "__builtin_va_list"; |
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282 | mangleName << Encoding::type << vargs.size() << vargs; |
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283 | } |
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284 | |
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285 | void Mangler_old::postvisit( const ZeroType * ) { |
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286 | mangleName << Encoding::zero; |
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287 | } |
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288 | |
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289 | void Mangler_old::postvisit( const OneType * ) { |
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290 | mangleName << Encoding::one; |
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291 | } |
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292 | |
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293 | void Mangler_old::postvisit( const QualifiedType * qualType ) { |
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294 | bool inqual = inQualifiedType; |
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295 | if (! inqual ) { |
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296 | // N marks the start of a qualified type |
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297 | inQualifiedType = true; |
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298 | mangleName << Encoding::qualifiedTypeStart; |
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299 | } |
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300 | maybeAccept( qualType->parent, *visitor ); |
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301 | maybeAccept( qualType->child, *visitor ); |
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302 | if ( ! inqual ) { |
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303 | // E marks the end of a qualified type |
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304 | inQualifiedType = false; |
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305 | mangleName << Encoding::qualifiedTypeEnd; |
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306 | } |
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307 | } |
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308 | |
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309 | void Mangler_old::postvisit( const TypeDecl * decl ) { |
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310 | // TODO: is there any case where mangling a TypeDecl makes sense? If so, this code needs to be |
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311 | // fixed to ensure that two TypeDecls mangle to the same name when they are the same type and vice versa. |
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312 | // Note: The current scheme may already work correctly for this case, I have not thought about this deeply |
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313 | // and the case has not yet come up in practice. Alternatively, if not then this code can be removed |
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314 | // aside from the assert false. |
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315 | assertf(false, "Mangler_old should not visit typedecl: %s", toCString(decl)); |
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316 | assertf( decl->kind < TypeDecl::NUMBER_OF_KINDS, "Unhandled type variable kind: %d", decl->kind ); |
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317 | mangleName << Encoding::typeVariables[ decl->kind ] << ( decl->name.length() ) << decl->name; |
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318 | } |
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319 | |
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320 | __attribute__((unused)) void printVarMap( const std::map< std::string, std::pair< int, int > > &varMap, std::ostream &os ) { |
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321 | for ( std::map< std::string, std::pair< int, int > >::const_iterator i = varMap.begin(); i != varMap.end(); ++i ) { |
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322 | os << i->first << "(" << i->second.first << "/" << i->second.second << ")" << std::endl; |
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323 | } // for |
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324 | } |
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325 | |
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326 | void Mangler_old::printQualifiers( const Type * type ) { |
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327 | // skip if not including qualifiers |
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328 | if ( typeMode ) return; |
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329 | if ( ! type->forall.empty() ) { |
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330 | std::list< std::string > assertionNames; |
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331 | int dcount = 0, fcount = 0, vcount = 0, acount = 0; |
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332 | mangleName << Encoding::forall; |
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333 | for ( const TypeDecl * i : type->forall ) { |
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334 | switch ( i->kind ) { |
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335 | case TypeDecl::Dtype: |
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336 | dcount++; |
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337 | break; |
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338 | case TypeDecl::Ftype: |
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339 | fcount++; |
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340 | break; |
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341 | case TypeDecl::Ttype: |
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342 | vcount++; |
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343 | break; |
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344 | default: |
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345 | assert( false ); |
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346 | } // switch |
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347 | varNums[ i->name ] = std::make_pair( nextVarNum, (int)i->kind ); |
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348 | for ( const DeclarationWithType * assert : i->assertions ) { |
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349 | PassVisitor<Mangler_old> sub_mangler( |
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350 | mangleOverridable, typeMode, mangleGenericParams, nextVarNum, varNums ); |
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351 | assert->accept( sub_mangler ); |
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352 | assertionNames.push_back( sub_mangler.pass.get_mangleName() ); |
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353 | acount++; |
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354 | } // for |
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355 | } // for |
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356 | mangleName << dcount << "_" << fcount << "_" << vcount << "_" << acount << "_"; |
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357 | std::copy( assertionNames.begin(), assertionNames.end(), std::ostream_iterator< std::string >( mangleName, "" ) ); |
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358 | mangleName << "_"; |
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359 | } // if |
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360 | if ( ! inFunctionType ) { |
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361 | // these qualifiers do not distinguish the outermost type of a function parameter |
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362 | if ( type->get_const() ) { |
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363 | mangleName << Encoding::qualifiers.at(Type::Const); |
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364 | } // if |
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365 | if ( type->get_volatile() ) { |
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366 | mangleName << Encoding::qualifiers.at(Type::Volatile); |
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367 | } // if |
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368 | // Removed due to restrict not affecting function compatibility in GCC |
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369 | // if ( type->get_isRestrict() ) { |
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370 | // mangleName << "E"; |
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371 | // } // if |
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372 | if ( type->get_atomic() ) { |
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373 | mangleName << Encoding::qualifiers.at(Type::Atomic); |
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374 | } // if |
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375 | } |
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376 | if ( type->get_mutex() ) { |
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377 | mangleName << Encoding::qualifiers.at(Type::Mutex); |
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378 | } // if |
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379 | if ( inFunctionType ) { |
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380 | // turn off inFunctionType so that types can be differentiated for nested qualifiers |
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381 | GuardValue( inFunctionType ); |
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382 | inFunctionType = false; |
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383 | } |
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384 | } |
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385 | } // namespace |
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386 | } // namespace Mangler |
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387 | } // namespace SymTab |
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388 | |
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389 | namespace Mangle { |
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390 | namespace { |
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391 | /// Mangles names to a unique C identifier |
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392 | struct Mangler_new : public ast::WithShortCircuiting, public ast::WithVisitorRef<Mangler_new>, public ast::WithGuards { |
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393 | Mangler_new( Mangle::Mode mode ); |
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394 | Mangler_new( const Mangler_new & ) = delete; |
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395 | |
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396 | void previsit( const ast::Node * ) { visit_children = false; } |
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397 | |
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398 | void postvisit( const ast::ObjectDecl * declaration ); |
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399 | void postvisit( const ast::FunctionDecl * declaration ); |
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400 | void postvisit( const ast::TypeDecl * declaration ); |
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401 | |
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402 | void postvisit( const ast::VoidType * voidType ); |
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403 | void postvisit( const ast::BasicType * basicType ); |
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404 | void postvisit( const ast::PointerType * pointerType ); |
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405 | void postvisit( const ast::ArrayType * arrayType ); |
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406 | void postvisit( const ast::ReferenceType * refType ); |
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407 | void postvisit( const ast::FunctionType * functionType ); |
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408 | void postvisit( const ast::StructInstType * aggregateUseType ); |
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409 | void postvisit( const ast::UnionInstType * aggregateUseType ); |
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410 | void postvisit( const ast::EnumInstType * aggregateUseType ); |
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411 | void postvisit( const ast::TypeInstType * aggregateUseType ); |
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412 | void postvisit( const ast::TraitInstType * inst ); |
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413 | void postvisit( const ast::TupleType * tupleType ); |
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414 | void postvisit( const ast::VarArgsType * varArgsType ); |
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415 | void postvisit( const ast::ZeroType * zeroType ); |
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416 | void postvisit( const ast::OneType * oneType ); |
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417 | void postvisit( const ast::QualifiedType * qualType ); |
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418 | |
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419 | std::string get_mangleName() { return mangleName.str(); } |
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420 | private: |
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421 | std::ostringstream mangleName; ///< Mangled name being constructed |
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422 | typedef std::map< std::string, std::pair< int, int > > VarMapType; |
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423 | VarMapType varNums; ///< Map of type variables to indices |
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424 | int nextVarNum; ///< Next type variable index |
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425 | bool isTopLevel; ///< Is the Mangler at the top level |
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426 | bool mangleOverridable; ///< Specially mangle overridable built-in methods |
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427 | bool typeMode; ///< Produce a unique mangled name for a type |
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428 | bool mangleGenericParams; ///< Include generic parameters in name mangling if true |
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429 | bool inFunctionType = false; ///< Include type qualifiers if false. |
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430 | bool inQualifiedType = false; ///< Add start/end delimiters around qualified type |
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431 | |
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432 | private: |
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433 | Mangler_new( bool mangleOverridable, bool typeMode, bool mangleGenericParams, |
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434 | int nextVarNum, const VarMapType& varNums ); |
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435 | friend class ast::Pass<Mangler_new>; |
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436 | |
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437 | private: |
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438 | void mangleDecl( const ast::DeclWithType *declaration ); |
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439 | void mangleRef( const ast::ReferenceToType *refType, std::string prefix ); |
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440 | |
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441 | void printQualifiers( const ast::Type *type ); |
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442 | }; // Mangler_new |
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443 | } // namespace |
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444 | |
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445 | |
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446 | std::string mangle( const ast::Node * decl, Mangle::Mode mode ) { |
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447 | ast::Pass<Mangler_new> mangler( mode ); |
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448 | maybeAccept( decl, mangler ); |
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449 | return mangler.core.get_mangleName(); |
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450 | } |
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451 | |
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452 | namespace { |
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453 | Mangler_new::Mangler_new( Mangle::Mode mode ) |
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454 | : nextVarNum( 0 ), isTopLevel( true ), |
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455 | mangleOverridable ( ! mode.no_overrideable ), |
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456 | typeMode ( mode.type ), |
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457 | mangleGenericParams( ! mode.no_generic_params ) {} |
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458 | |
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459 | Mangler_new::Mangler_new( bool mangleOverridable, bool typeMode, bool mangleGenericParams, |
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460 | int nextVarNum, const VarMapType& varNums ) |
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461 | : varNums( varNums ), nextVarNum( nextVarNum ), isTopLevel( false ), |
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462 | mangleOverridable( mangleOverridable ), typeMode( typeMode ), |
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463 | mangleGenericParams( mangleGenericParams ) {} |
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464 | |
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465 | void Mangler_new::mangleDecl( const ast::DeclWithType * decl ) { |
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466 | bool wasTopLevel = isTopLevel; |
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467 | if ( isTopLevel ) { |
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468 | varNums.clear(); |
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469 | nextVarNum = 0; |
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470 | isTopLevel = false; |
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471 | } // if |
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472 | mangleName << Encoding::manglePrefix; |
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473 | const CodeGen::OperatorInfo * opInfo = CodeGen::operatorLookup( decl->name ); |
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474 | if ( opInfo ) { |
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475 | mangleName << opInfo->outputName.size() << opInfo->outputName; |
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476 | } else { |
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477 | mangleName << decl->name.size() << decl->name; |
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478 | } // if |
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479 | maybeAccept( decl->get_type(), *visitor ); |
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480 | if ( mangleOverridable && decl->linkage.is_overrideable ) { |
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481 | // want to be able to override autogenerated and intrinsic routines, |
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482 | // so they need a different name mangling |
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483 | if ( decl->linkage == ast::Linkage::AutoGen ) { |
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484 | mangleName << Encoding::autogen; |
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485 | } else if ( decl->linkage == ast::Linkage::Intrinsic ) { |
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486 | mangleName << Encoding::intrinsic; |
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487 | } else { |
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488 | // if we add another kind of overridable function, this has to change |
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489 | assert( false && "unknown overrideable linkage" ); |
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490 | } // if |
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491 | } |
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492 | isTopLevel = wasTopLevel; |
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493 | } |
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494 | |
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495 | void Mangler_new::postvisit( const ast::ObjectDecl * decl ) { |
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496 | mangleDecl( decl ); |
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497 | } |
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498 | |
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499 | void Mangler_new::postvisit( const ast::FunctionDecl * decl ) { |
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500 | mangleDecl( decl ); |
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501 | } |
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502 | |
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503 | void Mangler_new::postvisit( const ast::VoidType * voidType ) { |
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504 | printQualifiers( voidType ); |
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505 | mangleName << Encoding::void_t; |
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506 | } |
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507 | |
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508 | void Mangler_new::postvisit( const ast::BasicType * basicType ) { |
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509 | printQualifiers( basicType ); |
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510 | assertf( basicType->kind < ast::BasicType::NUMBER_OF_BASIC_TYPES, "Unhandled basic type: %d", basicType->kind ); |
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511 | mangleName << Encoding::basicTypes[ basicType->kind ]; |
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512 | } |
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513 | |
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514 | void Mangler_new::postvisit( const ast::PointerType * pointerType ) { |
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515 | printQualifiers( pointerType ); |
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516 | // mangle void (*f)() and void f() to the same name to prevent overloading on functions and function pointers |
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517 | if ( ! pointerType->base.as<ast::FunctionType>() ) mangleName << Encoding::pointer; |
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518 | maybe_accept( pointerType->base.get(), *visitor ); |
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519 | } |
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520 | |
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521 | void Mangler_new::postvisit( const ast::ArrayType * arrayType ) { |
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522 | // TODO: encode dimension |
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523 | printQualifiers( arrayType ); |
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524 | mangleName << Encoding::array << "0"; |
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525 | maybeAccept( arrayType->base.get(), *visitor ); |
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526 | } |
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527 | |
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528 | void Mangler_new::postvisit( const ast::ReferenceType * refType ) { |
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529 | // don't print prefix (e.g. 'R') for reference types so that references and non-references do not overload. |
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530 | // Further, do not print the qualifiers for a reference type (but do run printQualifers because of TypeDecls, etc.), |
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531 | // by pretending every reference type is a function parameter. |
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532 | GuardValue( inFunctionType ); |
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533 | inFunctionType = true; |
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534 | printQualifiers( refType ); |
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535 | maybeAccept( refType->base.get(), *visitor ); |
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536 | } |
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537 | |
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538 | inline std::vector< ast::ptr< ast::Type > > getTypes( const std::vector< ast::ptr< ast::DeclWithType > > & decls ) { |
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539 | std::vector< ast::ptr< ast::Type > > ret; |
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540 | std::transform( decls.begin(), decls.end(), std::back_inserter( ret ), |
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541 | std::mem_fun( &ast::DeclWithType::get_type ) ); |
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542 | return ret; |
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543 | } |
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544 | |
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545 | void Mangler_new::postvisit( const ast::FunctionType * functionType ) { |
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546 | printQualifiers( functionType ); |
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547 | mangleName << Encoding::function; |
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548 | // turn on inFunctionType so that printQualifiers does not print most qualifiers for function parameters, |
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549 | // since qualifiers on outermost parameter type do not differentiate function types, e.g., |
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550 | // void (*)(const int) and void (*)(int) are the same type, but void (*)(const int *) and void (*)(int *) are different |
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551 | GuardValue( inFunctionType ); |
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552 | inFunctionType = true; |
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553 | std::vector< ast::ptr< ast::Type > > returnTypes = getTypes( functionType->returns ); |
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554 | if (returnTypes.empty()) mangleName << Encoding::void_t; |
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555 | else accept_each( returnTypes, *visitor ); |
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556 | mangleName << "_"; |
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557 | std::vector< ast::ptr< ast::Type > > paramTypes = getTypes( functionType->params ); |
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558 | accept_each( paramTypes, *visitor ); |
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559 | mangleName << "_"; |
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560 | } |
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561 | |
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562 | void Mangler_new::mangleRef( const ast::ReferenceToType * refType, std::string prefix ) { |
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563 | printQualifiers( refType ); |
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564 | |
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565 | mangleName << prefix << refType->name.length() << refType->name; |
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566 | |
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567 | if ( mangleGenericParams ) { |
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568 | if ( ! refType->params.empty() ) { |
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569 | mangleName << "_"; |
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570 | for ( const ast::Expr * param : refType->params ) { |
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571 | auto paramType = dynamic_cast< const ast::TypeExpr * >( param ); |
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572 | assertf(paramType, "Aggregate parameters should be type expressions: %s", toCString(param)); |
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573 | maybeAccept( paramType->type.get(), *visitor ); |
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574 | } |
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575 | mangleName << "_"; |
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576 | } |
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577 | } |
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578 | } |
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579 | |
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580 | void Mangler_new::postvisit( const ast::StructInstType * aggregateUseType ) { |
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581 | mangleRef( aggregateUseType, Encoding::struct_t ); |
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582 | } |
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583 | |
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584 | void Mangler_new::postvisit( const ast::UnionInstType * aggregateUseType ) { |
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585 | mangleRef( aggregateUseType, Encoding::union_t ); |
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586 | } |
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587 | |
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588 | void Mangler_new::postvisit( const ast::EnumInstType * aggregateUseType ) { |
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589 | mangleRef( aggregateUseType, Encoding::enum_t ); |
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590 | } |
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591 | |
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592 | void Mangler_new::postvisit( const ast::TypeInstType * typeInst ) { |
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593 | VarMapType::iterator varNum = varNums.find( typeInst->name ); |
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594 | if ( varNum == varNums.end() ) { |
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595 | mangleRef( typeInst, Encoding::type ); |
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596 | } else { |
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597 | printQualifiers( typeInst ); |
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598 | // Note: Can't use name here, since type variable names do not actually disambiguate a function, e.g. |
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599 | // forall(dtype T) void f(T); |
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600 | // forall(dtype S) void f(S); |
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601 | // are equivalent and should mangle the same way. This is accomplished by numbering the type variables when they |
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602 | // are first found and prefixing with the appropriate encoding for the type class. |
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603 | assertf( varNum->second.second < TypeDecl::NUMBER_OF_KINDS, "Unhandled type variable kind: %d", varNum->second.second ); |
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604 | mangleName << Encoding::typeVariables[varNum->second.second] << varNum->second.first; |
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605 | } // if |
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606 | } |
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607 | |
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608 | void Mangler_new::postvisit( const ast::TraitInstType * inst ) { |
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609 | printQualifiers( inst ); |
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610 | mangleName << inst->name.size() << inst->name; |
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611 | } |
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612 | |
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613 | void Mangler_new::postvisit( const ast::TupleType * tupleType ) { |
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614 | printQualifiers( tupleType ); |
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615 | mangleName << Encoding::tuple << tupleType->types.size(); |
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616 | accept_each( tupleType->types, *visitor ); |
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617 | } |
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618 | |
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619 | void Mangler_new::postvisit( const ast::VarArgsType * varArgsType ) { |
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620 | printQualifiers( varArgsType ); |
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621 | static const std::string vargs = "__builtin_va_list"; |
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622 | mangleName << Encoding::type << vargs.size() << vargs; |
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623 | } |
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624 | |
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625 | void Mangler_new::postvisit( const ast::ZeroType * ) { |
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626 | mangleName << Encoding::zero; |
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627 | } |
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628 | |
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629 | void Mangler_new::postvisit( const ast::OneType * ) { |
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630 | mangleName << Encoding::one; |
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631 | } |
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632 | |
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633 | void Mangler_new::postvisit( const ast::QualifiedType * qualType ) { |
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634 | bool inqual = inQualifiedType; |
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635 | if (! inqual ) { |
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636 | // N marks the start of a qualified type |
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637 | inQualifiedType = true; |
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638 | mangleName << Encoding::qualifiedTypeStart; |
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639 | } |
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640 | maybeAccept( qualType->parent.get(), *visitor ); |
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641 | maybeAccept( qualType->child.get(), *visitor ); |
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642 | if ( ! inqual ) { |
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643 | // E marks the end of a qualified type |
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644 | inQualifiedType = false; |
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645 | mangleName << Encoding::qualifiedTypeEnd; |
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646 | } |
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647 | } |
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648 | |
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649 | void Mangler_new::postvisit( const ast::TypeDecl * decl ) { |
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650 | // TODO: is there any case where mangling a TypeDecl makes sense? If so, this code needs to be |
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651 | // fixed to ensure that two TypeDecls mangle to the same name when they are the same type and vice versa. |
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652 | // Note: The current scheme may already work correctly for this case, I have not thought about this deeply |
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653 | // and the case has not yet come up in practice. Alternatively, if not then this code can be removed |
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654 | // aside from the assert false. |
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655 | assertf(false, "Mangler_new should not visit typedecl: %s", toCString(decl)); |
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656 | assertf( decl->kind < ast::TypeDecl::Kind::NUMBER_OF_KINDS, "Unhandled type variable kind: %d", decl->kind ); |
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657 | mangleName << Encoding::typeVariables[ decl->kind ] << ( decl->name.length() ) << decl->name; |
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658 | } |
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659 | |
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660 | __attribute__((unused)) void printVarMap( const std::map< std::string, std::pair< int, int > > &varMap, std::ostream &os ) { |
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661 | for ( std::map< std::string, std::pair< int, int > >::const_iterator i = varMap.begin(); i != varMap.end(); ++i ) { |
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662 | os << i->first << "(" << i->second.first << "/" << i->second.second << ")" << std::endl; |
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663 | } // for |
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664 | } |
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665 | |
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666 | void Mangler_new::printQualifiers( const ast::Type * type ) { |
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667 | // skip if not including qualifiers |
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668 | if ( typeMode ) return; |
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669 | if ( auto ptype = dynamic_cast< const ast::ParameterizedType * >(type) ) { |
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670 | if ( ! ptype->forall.empty() ) { |
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671 | std::list< std::string > assertionNames; |
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672 | int dcount = 0, fcount = 0, vcount = 0, acount = 0; |
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673 | mangleName << Encoding::forall; |
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674 | for ( const ast::TypeDecl * decl : ptype->forall ) { |
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675 | switch ( decl->kind ) { |
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676 | case ast::TypeDecl::Kind::Dtype: |
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677 | dcount++; |
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678 | break; |
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679 | case ast::TypeDecl::Kind::Ftype: |
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680 | fcount++; |
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681 | break; |
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682 | case ast::TypeDecl::Kind::Ttype: |
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683 | vcount++; |
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684 | break; |
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685 | default: |
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686 | assert( false ); |
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687 | } // switch |
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688 | varNums[ decl->name ] = std::make_pair( nextVarNum, (int)decl->kind ); |
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689 | for ( const ast::DeclWithType * assert : decl->assertions ) { |
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690 | ast::Pass<Mangler_new> sub_mangler( |
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691 | mangleOverridable, typeMode, mangleGenericParams, nextVarNum, varNums ); |
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692 | assert->accept( sub_mangler ); |
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693 | assertionNames.push_back( sub_mangler.core.get_mangleName() ); |
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694 | acount++; |
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695 | } // for |
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696 | } // for |
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697 | mangleName << dcount << "_" << fcount << "_" << vcount << "_" << acount << "_"; |
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698 | std::copy( assertionNames.begin(), assertionNames.end(), std::ostream_iterator< std::string >( mangleName, "" ) ); |
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699 | mangleName << "_"; |
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700 | } // if |
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701 | } // if |
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702 | if ( ! inFunctionType ) { |
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703 | // these qualifiers do not distinguish the outermost type of a function parameter |
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704 | if ( type->is_const() ) { |
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705 | mangleName << Encoding::qualifiers.at(Type::Const); |
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706 | } // if |
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707 | if ( type->is_volatile() ) { |
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708 | mangleName << Encoding::qualifiers.at(Type::Volatile); |
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709 | } // if |
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710 | // Removed due to restrict not affecting function compatibility in GCC |
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711 | // if ( type->get_isRestrict() ) { |
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712 | // mangleName << "E"; |
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713 | // } // if |
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714 | if ( type->is_atomic() ) { |
---|
715 | mangleName << Encoding::qualifiers.at(Type::Atomic); |
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716 | } // if |
---|
717 | } |
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718 | if ( type->is_mutex() ) { |
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719 | mangleName << Encoding::qualifiers.at(Type::Mutex); |
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720 | } // if |
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721 | if ( inFunctionType ) { |
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722 | // turn off inFunctionType so that types can be differentiated for nested qualifiers |
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723 | GuardValue( inFunctionType ); |
---|
724 | inFunctionType = false; |
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725 | } |
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726 | } |
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727 | } // namespace |
---|
728 | } // namespace Mangle |
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729 | |
---|
730 | // Local Variables: // |
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731 | // tab-width: 4 // |
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732 | // mode: c++ // |
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733 | // compile-command: "make install" // |
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734 | // End: // |
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