1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2018 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 | // Demangle.cc -- Convert a mangled name into a human readable name. |
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8 | // |
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9 | // Author : Rob Schluntz |
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10 | // Created On : Thu Jul 19 12:52:41 2018 |
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11 | // Last Modified By : Andrew Beach |
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12 | // Last Modified On : Mon Nov 6 15:59:00 2023 |
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13 | // Update Count : 12 |
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14 | // |
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15 | |
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16 | #include <algorithm> |
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17 | #include <sstream> |
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18 | |
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19 | #include "AST/Pass.hpp" |
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20 | #include "AST/Type.hpp" |
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21 | #include "CodeGen/GenType.h" |
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22 | #include "CodeGen/OperatorTable.h" |
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23 | #include "Common/PassVisitor.h" |
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24 | #include "Common/utility.h" // isPrefix |
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25 | #include "Mangler.h" |
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26 | #include "SynTree/Type.h" |
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27 | #include "SynTree/Declaration.h" |
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28 | |
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29 | #define DEBUG |
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30 | #ifdef DEBUG |
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31 | #define PRINT(x) x |
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32 | #else |
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33 | #define PRINT(x) {} |
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34 | #endif |
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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 | struct StringView { |
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40 | private: |
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41 | std::string str; |
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42 | size_t idx = 0; |
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43 | // typedef Type * (StringView::*parser)(Type::Qualifiers); |
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44 | typedef std::function<Type * (Type::Qualifiers)> parser; |
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45 | std::vector<std::pair<std::string, parser>> parsers; |
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46 | public: |
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47 | StringView(const std::string & str); |
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48 | |
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49 | bool done() const { return idx >= str.size(); } |
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50 | char cur() const { assert(! done()); return str[idx]; } |
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51 | |
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52 | bool expect(char ch) { return str[idx++] == ch; } |
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53 | void next(size_t inc = 1) { idx += inc; } |
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54 | |
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55 | /// determines if `pref` is a prefix of `str` |
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56 | bool isPrefix(const std::string & pref); |
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57 | bool extractNumber(size_t & out); |
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58 | bool extractName(std::string & out); |
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59 | bool stripMangleName(std::string & name); |
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60 | |
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61 | Type * parseFunction(Type::Qualifiers tq); |
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62 | Type * parseTuple(Type::Qualifiers tq); |
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63 | Type * parseVoid(Type::Qualifiers tq); |
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64 | Type * parsePointer(Type::Qualifiers tq); |
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65 | Type * parseArray(Type::Qualifiers tq); |
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66 | Type * parseStruct(Type::Qualifiers tq); |
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67 | Type * parseUnion(Type::Qualifiers tq); |
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68 | Type * parseEnum(Type::Qualifiers tq); |
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69 | Type * parseType(Type::Qualifiers tq); |
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70 | |
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71 | Type * parseType(); |
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72 | bool parse(std::string & name, Type *& type); |
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73 | }; |
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74 | |
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75 | StringView::StringView(const std::string & str) : str(str) { |
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76 | // basic types |
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77 | for (size_t k = 0; k < BasicType::NUMBER_OF_BASIC_TYPES; ++k) { |
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78 | parsers.emplace_back(Encoding::basicTypes[k], [k](Type::Qualifiers tq) { |
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79 | PRINT( std::cerr << "basic type: " << k << std::endl; ) |
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80 | return new BasicType(tq, (BasicType::Kind)k); |
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81 | }); |
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82 | } |
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83 | // type variable types |
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84 | for (size_t k = 0; k < TypeDecl::NUMBER_OF_KINDS; ++k) { |
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85 | static const std::string typeVariableNames[] = { "DT", "DST", "OT", "FT", "TT", "ALT", }; |
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86 | static_assert( |
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87 | sizeof(typeVariableNames)/sizeof(typeVariableNames[0]) == TypeDecl::NUMBER_OF_KINDS, |
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88 | "Each type variable kind should have a demangle name prefix" |
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89 | ); |
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90 | parsers.emplace_back(Encoding::typeVariables[k], [k, this](Type::Qualifiers tq) -> TypeInstType * { |
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91 | PRINT( std::cerr << "type variable type: " << k << std::endl; ) |
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92 | size_t N; |
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93 | if (! extractNumber(N)) return nullptr; |
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94 | return new TypeInstType(tq, toString(typeVariableNames[k], N), (TypeDecl::Kind)k != TypeDecl::Ftype); |
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95 | }); |
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96 | } |
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97 | // everything else |
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98 | parsers.emplace_back(Encoding::void_t, [this](Type::Qualifiers tq) { return parseVoid(tq); }); |
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99 | parsers.emplace_back(Encoding::function, [this](Type::Qualifiers tq) { return parseFunction(tq); }); |
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100 | parsers.emplace_back(Encoding::pointer, [this](Type::Qualifiers tq) { return parsePointer(tq); }); |
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101 | parsers.emplace_back(Encoding::array, [this](Type::Qualifiers tq) { return parseArray(tq); }); |
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102 | parsers.emplace_back(Encoding::tuple, [this](Type::Qualifiers tq) { return parseTuple(tq); }); |
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103 | parsers.emplace_back(Encoding::struct_t, [this](Type::Qualifiers tq) { return parseStruct(tq); }); |
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104 | parsers.emplace_back(Encoding::union_t, [this](Type::Qualifiers tq) { return parseUnion(tq); }); |
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105 | parsers.emplace_back(Encoding::enum_t, [this](Type::Qualifiers tq) { return parseEnum(tq); }); |
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106 | parsers.emplace_back(Encoding::type, [this](Type::Qualifiers tq) { return parseType(tq); }); |
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107 | parsers.emplace_back(Encoding::zero, [](Type::Qualifiers tq) { return new ZeroType(tq); }); |
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108 | parsers.emplace_back(Encoding::one, [](Type::Qualifiers tq) { return new OneType(tq); }); |
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109 | } |
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110 | |
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111 | bool StringView::extractNumber(size_t & out) { |
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112 | std::stringstream numss; |
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113 | if (idx >= str.size()) return false; |
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114 | while (isdigit(str[idx])) { |
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115 | numss << str[idx]; |
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116 | ++idx; |
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117 | if (idx == str.size()) break; |
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118 | } |
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119 | if (! (numss >> out)) return false; |
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120 | PRINT( std::cerr << "extractNumber success: " << out << std::endl; ) |
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121 | return true; |
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122 | } |
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123 | |
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124 | bool StringView::extractName(std::string & out) { |
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125 | size_t len; |
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126 | if (! extractNumber(len)) return false; |
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127 | if (idx+len > str.size()) return false; |
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128 | out = str.substr(idx, len); |
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129 | idx += len; |
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130 | PRINT( std::cerr << "extractName success: " << out << std::endl; ) |
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131 | return true; |
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132 | } |
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133 | |
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134 | bool StringView::isPrefix(const std::string & pref) { |
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135 | // if ( pref.size() > str.size()-idx ) return false; |
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136 | // auto its = std::mismatch( pref.begin(), pref.end(), std::next(str.begin(), idx) ); |
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137 | // if (its.first == pref.end()) { |
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138 | // idx += pref.size(); |
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139 | // return true; |
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140 | // } |
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141 | |
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142 | // This update is untested because there are no tests for this code. |
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143 | if ( ::isPrefix( str, pref, idx ) ) { |
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144 | idx += pref.size(); |
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145 | return true; |
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146 | } |
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147 | return false; |
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148 | } |
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149 | |
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150 | // strips __NAME__cfa__TYPE_N, where N is [0-9]+: returns str is a match is found, returns empty string otherwise |
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151 | bool StringView::stripMangleName(std::string & name) { |
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152 | PRINT( std::cerr << "====== " << str.size() << " " << str << std::endl; ) |
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153 | if (str.size() < 2+Encoding::manglePrefix.size()) return false; // +2 for at least _1 suffix |
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154 | if ( ! isPrefix(Encoding::manglePrefix) || ! isdigit(str.back() ) ) return false; |
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155 | |
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156 | // get name |
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157 | if (! extractName(name)) return false; |
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158 | |
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159 | // find bounds for type |
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160 | PRINT( std::cerr << idx << " " << str.size() << std::endl; ) |
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161 | PRINT( std::cerr << "["); |
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162 | while (isdigit(str.back())) { |
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163 | PRINT(std::cerr << "."); |
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164 | str.pop_back(); |
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165 | if (str.size() <= idx) return false; |
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166 | } |
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167 | PRINT( std::cerr << "]" << std::endl ); |
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168 | if (str.back() != '_') return false; |
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169 | str.pop_back(); |
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170 | PRINT( std::cerr << str.size() << " " << name << " " << str.substr(idx) << std::endl; ) |
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171 | return str.size() > idx; |
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172 | } |
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173 | |
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174 | Type * StringView::parseFunction(Type::Qualifiers tq) { |
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175 | PRINT( std::cerr << "function..." << std::endl; ) |
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176 | if (done()) return nullptr; |
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177 | FunctionType * ftype = new FunctionType( tq, false ); |
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178 | std::unique_ptr<Type> manager(ftype); |
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179 | Type * retVal = parseType(); |
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180 | if (! retVal) return nullptr; |
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181 | PRINT( std::cerr << "with return type: " << retVal << std::endl; ) |
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182 | ftype->returnVals.push_back(ObjectDecl::newObject("", retVal, nullptr)); |
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183 | if (done() || ! expect('_')) return nullptr; |
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184 | while (! done()) { |
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185 | PRINT( std::cerr << "got ch: " << cur() << std::endl; ) |
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186 | if (cur() == '_') return manager.release(); |
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187 | Type * param = parseType(); |
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188 | if (! param) return nullptr; |
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189 | PRINT( std::cerr << "with parameter : " << param << std::endl; ) |
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190 | ftype->parameters.push_back(ObjectDecl::newObject("", param, nullptr)); |
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191 | } |
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192 | return nullptr; |
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193 | } |
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194 | |
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195 | Type * StringView::parseTuple(Type::Qualifiers tq) { |
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196 | PRINT( std::cerr << "tuple..." << std::endl; ) |
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197 | std::list< Type * > types; |
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198 | size_t ncomponents; |
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199 | if (! extractNumber(ncomponents)) return nullptr; |
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200 | for (size_t i = 0; i < ncomponents; ++i) { |
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201 | // TODO: delete all on return |
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202 | if (done()) return nullptr; |
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203 | PRINT( std::cerr << "got ch: " << cur() << std::endl; ) |
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204 | Type * t = parseType(); |
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205 | if (! t) return nullptr; |
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206 | PRINT( std::cerr << "with type : " << t << std::endl; ) |
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207 | types.push_back(t); |
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208 | } |
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209 | return new TupleType( tq, types ); |
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210 | } |
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211 | |
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212 | Type * StringView::parseVoid(Type::Qualifiers tq) { |
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213 | return new VoidType( tq ); |
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214 | } |
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215 | |
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216 | Type * StringView::parsePointer(Type::Qualifiers tq) { |
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217 | PRINT( std::cerr << "pointer..." << std::endl; ) |
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218 | Type * t = parseType(); |
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219 | if (! t) return nullptr; |
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220 | return new PointerType( tq, t ); |
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221 | } |
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222 | |
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223 | Type * StringView::parseArray(Type::Qualifiers tq) { |
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224 | PRINT( std::cerr << "array..." << std::endl; ) |
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225 | size_t length; |
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226 | if (! extractNumber(length)) return nullptr; |
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227 | Type * t = parseType(); |
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228 | if (! t) return nullptr; |
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229 | return new ArrayType( tq, t, new ConstantExpr( Constant::from_ulong(length) ), false, false ); |
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230 | } |
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231 | |
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232 | Type * StringView::parseStruct(Type::Qualifiers tq) { |
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233 | PRINT( std::cerr << "struct..." << std::endl; ) |
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234 | std::string name; |
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235 | if (! extractName(name)) return nullptr; |
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236 | return new StructInstType(tq, name); |
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237 | } |
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238 | |
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239 | Type * StringView::parseUnion(Type::Qualifiers tq) { |
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240 | PRINT( std::cerr << "union..." << std::endl; ) |
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241 | std::string name; |
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242 | if (! extractName(name)) return nullptr; |
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243 | return new UnionInstType(tq, name); |
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244 | } |
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245 | |
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246 | Type * StringView::parseEnum(Type::Qualifiers tq) { |
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247 | PRINT( std::cerr << "enum..." << std::endl; ) |
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248 | std::string name; |
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249 | if (! extractName(name)) return nullptr; |
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250 | return new EnumInstType(tq, name); |
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251 | } |
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252 | |
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253 | Type * StringView::parseType(Type::Qualifiers tq) { |
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254 | PRINT( std::cerr << "type..." << std::endl; ) |
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255 | std::string name; |
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256 | if (! extractName(name)) return nullptr; |
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257 | PRINT( std::cerr << "typename..." << name << std::endl; ) |
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258 | return new TypeInstType(tq, name, false); |
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259 | } |
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260 | |
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261 | Type * StringView::parseType() { |
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262 | if (done()) return nullptr; |
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263 | |
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264 | std::list<TypeDecl *> forall; |
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265 | if (isPrefix(Encoding::forall)) { |
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266 | PRINT( std::cerr << "polymorphic with..." << std::endl; ) |
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267 | size_t dcount, fcount, vcount, acount; |
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268 | if (! extractNumber(dcount)) return nullptr; |
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269 | PRINT( std::cerr << dcount << " dtypes" << std::endl; ) |
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270 | if (! expect('_')) return nullptr; |
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271 | if (! extractNumber(fcount)) return nullptr; |
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272 | PRINT( std::cerr << fcount << " ftypes" << std::endl; ) |
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273 | if (! expect('_')) return nullptr; |
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274 | if (! extractNumber(vcount)) return nullptr; |
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275 | PRINT( std::cerr << vcount << " ttypes" << std::endl; ) |
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276 | if (! expect('_')) return nullptr; |
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277 | if (! extractNumber(acount)) return nullptr; |
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278 | PRINT( std::cerr << acount << " assertions" << std::endl; ) |
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279 | if (! expect('_')) return nullptr; |
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280 | for (size_t i = 0; i < acount; ++i) { |
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281 | // TODO: need to recursively parse assertions, but for now just return nullptr so that |
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282 | // demangler does not crash if there are assertions |
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283 | return nullptr; |
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284 | } |
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285 | if (! expect('_')) return nullptr; |
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286 | } |
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287 | |
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288 | // qualifiers |
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289 | Type::Qualifiers tq; |
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290 | while (true) { |
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291 | auto qual = std::find_if(Encoding::qualifiers.begin(), Encoding::qualifiers.end(), [this](decltype(Encoding::qualifiers)::value_type val) { |
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292 | return isPrefix(val.second); |
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293 | }); |
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294 | if (qual == Encoding::qualifiers.end()) break; |
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295 | tq |= qual->first; |
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296 | } |
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297 | |
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298 | // find the correct type parser and use it |
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299 | auto iter = std::find_if(parsers.begin(), parsers.end(), [this](std::pair<std::string, parser> & p) { |
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300 | return isPrefix(p.first); |
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301 | }); |
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302 | assertf(iter != parsers.end(), "Unhandled type letter: %c at index: %zd", cur(), idx); |
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303 | Type * ret = iter->second(tq); |
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304 | if (! ret) return nullptr; |
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305 | ret->forall = std::move(forall); |
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306 | return ret; |
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307 | } |
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308 | |
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309 | bool StringView::parse(std::string & name, Type *& type) { |
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310 | if (! stripMangleName(name)) return false; |
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311 | PRINT( std::cerr << "stripped name: " << name << std::endl; ) |
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312 | Type * t = parseType(); |
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313 | if (! t) return false; |
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314 | type = t; |
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315 | return true; |
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316 | } |
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317 | |
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318 | std::string demangle(const std::string & mangleName) { |
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319 | SymTab::Mangler::StringView view(mangleName); |
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320 | std::string name; |
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321 | Type * type = nullptr; |
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322 | if (! view.parse(name, type)) return mangleName; |
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323 | auto info = CodeGen::operatorLookupByOutput(name); |
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324 | if (info) name = info->inputName; |
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325 | std::unique_ptr<Type> manager(type); |
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326 | return CodeGen::genType(type, name); |
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327 | } |
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328 | } // namespace |
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329 | } // namespace Mangler |
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330 | } // namespace SymTab |
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331 | |
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332 | namespace Mangle { |
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333 | |
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334 | namespace { |
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335 | |
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336 | struct Demangler { |
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337 | private: |
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338 | std::string str; |
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339 | size_t index = 0; |
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340 | using Parser = std::function<ast::Type * ( ast::CV::Qualifiers )>; |
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341 | std::vector<std::pair<std::string, Parser>> parsers; |
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342 | public: |
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343 | Demangler( const std::string & str ); |
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344 | |
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345 | bool done() const { return str.size() <= index; } |
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346 | char cur() const { assert( !done() ); return str[index]; } |
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347 | bool expect( char ch ) { return str[index++] == ch; } |
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348 | |
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349 | bool isPrefix( const std::string & pref ); |
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350 | bool extractNumber( size_t & out ); |
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351 | bool extractName( std::string & out ); |
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352 | bool stripMangleName( std::string & name ); |
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353 | |
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354 | ast::Type * parseFunction( ast::CV::Qualifiers tq ); |
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355 | ast::Type * parseTuple( ast::CV::Qualifiers tq ); |
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356 | ast::Type * parsePointer( ast::CV::Qualifiers tq ); |
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357 | ast::Type * parseArray( ast::CV::Qualifiers tq ); |
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358 | ast::Type * parseStruct( ast::CV::Qualifiers tq ); |
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359 | ast::Type * parseUnion( ast::CV::Qualifiers tq ); |
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360 | ast::Type * parseEnum( ast::CV::Qualifiers tq ); |
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361 | ast::Type * parseType( ast::CV::Qualifiers tq ); |
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362 | ast::Type * parseZero( ast::CV::Qualifiers tq ); |
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363 | ast::Type * parseOne( ast::CV::Qualifiers tq ); |
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364 | |
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365 | ast::Type * parseType(); |
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366 | bool parse( std::string & name, ast::Type *& type ); |
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367 | }; |
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368 | |
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369 | Demangler::Demangler(const std::string & str) : str(str) { |
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370 | for (size_t k = 0; k < ast::BasicType::NUMBER_OF_BASIC_TYPES; ++k) { |
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371 | parsers.emplace_back(Encoding::basicTypes[k], [k]( ast::CV::Qualifiers tq ) { |
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372 | PRINT( std::cerr << "basic type: " << k << std::endl; ) |
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373 | return new ast::BasicType( (ast::BasicType::Kind)k, tq ); |
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374 | }); |
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375 | } |
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376 | |
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377 | for (size_t k = 0; k < ast::TypeDecl::NUMBER_OF_KINDS; ++k) { |
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378 | static const std::string typeVariableNames[] = { "DT", "DST", "OT", "FT", "TT", "ALT", }; |
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379 | static_assert( |
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380 | sizeof(typeVariableNames)/sizeof(typeVariableNames[0]) == ast::TypeDecl::NUMBER_OF_KINDS, |
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381 | "Each type variable kind should have a demangle name prefix" |
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382 | ); |
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383 | parsers.emplace_back(Encoding::typeVariables[k], [k, this]( ast::CV::Qualifiers tq ) -> ast::TypeInstType * { |
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384 | PRINT( std::cerr << "type variable type: " << k << std::endl; ) |
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385 | size_t N; |
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386 | if (!extractNumber(N)) return nullptr; |
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387 | return new ast::TypeInstType( |
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388 | toString(typeVariableNames[k], N), |
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389 | (ast::TypeDecl::Kind)k, |
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390 | tq ); |
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391 | }); |
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392 | } |
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393 | |
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394 | parsers.emplace_back(Encoding::void_t, [this]( ast::CV::Qualifiers tq ) { return new ast::VoidType(tq); }); |
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395 | parsers.emplace_back(Encoding::function, [this]( ast::CV::Qualifiers tq ) { return parseFunction(tq); }); |
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396 | parsers.emplace_back(Encoding::pointer, [this]( ast::CV::Qualifiers tq ) { return parsePointer(tq); }); |
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397 | parsers.emplace_back(Encoding::array, [this]( ast::CV::Qualifiers tq ) { return parseArray(tq); }); |
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398 | parsers.emplace_back(Encoding::tuple, [this]( ast::CV::Qualifiers tq ) { return parseTuple(tq); }); |
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399 | parsers.emplace_back(Encoding::struct_t, [this]( ast::CV::Qualifiers tq ) { return parseStruct(tq); }); |
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400 | parsers.emplace_back(Encoding::union_t, [this]( ast::CV::Qualifiers tq ) { return parseUnion(tq); }); |
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401 | parsers.emplace_back(Encoding::enum_t, [this]( ast::CV::Qualifiers tq ) { return parseEnum(tq); }); |
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402 | parsers.emplace_back(Encoding::type, [this]( ast::CV::Qualifiers tq ) { return parseType(tq); }); |
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403 | parsers.emplace_back(Encoding::zero, []( ast::CV::Qualifiers tq ) { return new ast::ZeroType(tq); }); |
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404 | parsers.emplace_back(Encoding::one, []( ast::CV::Qualifiers tq ) { return new ast::OneType(tq); }); |
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405 | } |
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406 | |
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407 | bool Demangler::extractNumber( size_t & out ) { |
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408 | std::stringstream numss; |
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409 | if ( str.size() <= index ) return false; |
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410 | while ( isdigit( str[index] ) ) { |
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411 | numss << str[index]; |
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412 | ++index; |
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413 | if ( str.size() == index ) break; |
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414 | } |
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415 | if ( !(numss >> out) ) return false; |
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416 | PRINT( std::cerr << "extractNumber success: " << out << std::endl; ) |
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417 | return true; |
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418 | } |
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419 | |
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420 | bool Demangler::extractName( std::string & out ) { |
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421 | size_t len; |
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422 | if ( !extractNumber(len) ) return false; |
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423 | if ( str.size() < index + len ) return false; |
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424 | out = str.substr( index, len ); |
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425 | index += len; |
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426 | PRINT( std::cerr << "extractName success: " << out << std::endl; ) |
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427 | return true; |
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428 | } |
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429 | |
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430 | bool Demangler::isPrefix( const std::string & pref ) { |
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431 | // Wraps the utility isPrefix function. |
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432 | if ( ::isPrefix( str, pref, index ) ) { |
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433 | index += pref.size(); |
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434 | return true; |
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435 | } |
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436 | return false; |
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437 | } |
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438 | |
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439 | // strips __NAME__cfa__TYPE_N, where N is [0-9]+: returns str is a match is found, returns empty string otherwise |
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440 | bool Demangler::stripMangleName( std::string & name ) { |
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441 | PRINT( std::cerr << "====== " << str.size() << " " << str << std::endl; ) |
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442 | if (str.size() < 2+Encoding::manglePrefix.size()) return false; // +2 for at least _1 suffix |
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443 | if ( !isPrefix(Encoding::manglePrefix) || !isdigit(str.back() ) ) return false; |
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444 | |
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445 | if (!extractName(name)) return false; |
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446 | |
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447 | // Find bounds for type. |
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448 | PRINT( std::cerr << index << " " << str.size() << std::endl; ) |
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449 | PRINT( std::cerr << "["); |
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450 | while (isdigit(str.back())) { |
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451 | PRINT(std::cerr << "."); |
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452 | str.pop_back(); |
---|
453 | if (str.size() <= index) return false; |
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454 | } |
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455 | PRINT( std::cerr << "]" << std::endl ); |
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456 | if (str.back() != '_') return false; |
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457 | str.pop_back(); |
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458 | PRINT( std::cerr << str.size() << " " << name << " " << str.substr(index) << std::endl; ) |
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459 | return index < str.size(); |
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460 | } |
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461 | |
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462 | ast::Type * Demangler::parseFunction( ast::CV::Qualifiers tq ) { |
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463 | PRINT( std::cerr << "function..." << std::endl; ) |
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464 | if ( done() ) return nullptr; |
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465 | ast::FunctionType * ftype = new ast::FunctionType( ast::FixedArgs, tq ); |
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466 | std::unique_ptr<ast::Type> manager( ftype ); |
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467 | ast::Type * retVal = parseType(); |
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468 | if ( !retVal ) return nullptr; |
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469 | PRINT( std::cerr << "with return type: " << retVal << std::endl; ) |
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470 | ftype->returns.emplace_back( retVal ); |
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471 | if ( done() || !expect('_') ) return nullptr; |
---|
472 | while ( !done() ) { |
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473 | PRINT( std::cerr << "got ch: " << cur() << std::endl; ) |
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474 | if ( cur() == '_' ) return manager.release(); |
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475 | ast::Type * param = parseType(); |
---|
476 | if ( !param ) return nullptr; |
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477 | PRINT( std::cerr << "with parameter : " << param << std::endl; ) |
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478 | ftype->params.emplace_back( param ); |
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479 | } |
---|
480 | return nullptr; |
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481 | } |
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482 | |
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483 | ast::Type * Demangler::parseTuple( ast::CV::Qualifiers tq ) { |
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484 | PRINT( std::cerr << "tuple..." << std::endl; ) |
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485 | std::vector<ast::ptr<ast::Type>> types; |
---|
486 | size_t ncomponents; |
---|
487 | if ( !extractNumber(ncomponents) ) return nullptr; |
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488 | for ( size_t i = 0; i < ncomponents; ++i ) { |
---|
489 | if ( done() ) return nullptr; |
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490 | PRINT( std::cerr << "got ch: " << cur() << std::endl; ) |
---|
491 | ast::Type * t = parseType(); |
---|
492 | if ( !t ) return nullptr; |
---|
493 | PRINT( std::cerr << "with type : " << t << std::endl; ) |
---|
494 | types.push_back( t ); |
---|
495 | } |
---|
496 | return new ast::TupleType( std::move( types ), tq ); |
---|
497 | } |
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498 | |
---|
499 | ast::Type * Demangler::parsePointer( ast::CV::Qualifiers tq ) { |
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500 | PRINT( std::cerr << "pointer..." << std::endl; ) |
---|
501 | ast::Type * t = parseType(); |
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502 | if ( !t ) return nullptr; |
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503 | return new ast::PointerType( t, tq ); |
---|
504 | } |
---|
505 | |
---|
506 | ast::Type * Demangler::parseArray( ast::CV::Qualifiers tq ) { |
---|
507 | PRINT( std::cerr << "array..." << std::endl; ) |
---|
508 | size_t length; |
---|
509 | if ( !extractNumber(length) ) return nullptr; |
---|
510 | ast::Type * t = parseType(); |
---|
511 | if ( !t ) return nullptr; |
---|
512 | return new ast::ArrayType( |
---|
513 | t, |
---|
514 | ast::ConstantExpr::from_ulong( CodeLocation(), length ), |
---|
515 | ast::FixedLen, |
---|
516 | ast::DynamicDim, |
---|
517 | tq ); |
---|
518 | } |
---|
519 | |
---|
520 | ast::Type * Demangler::parseStruct( ast::CV::Qualifiers tq ) { |
---|
521 | PRINT( std::cerr << "struct..." << std::endl; ) |
---|
522 | std::string name; |
---|
523 | if ( !extractName(name) ) return nullptr; |
---|
524 | return new ast::StructInstType( name, tq ); |
---|
525 | } |
---|
526 | |
---|
527 | ast::Type * Demangler::parseUnion( ast::CV::Qualifiers tq ) { |
---|
528 | PRINT( std::cerr << "union..." << std::endl; ) |
---|
529 | std::string name; |
---|
530 | if ( !extractName(name) ) return nullptr; |
---|
531 | return new ast::UnionInstType( name, tq ); |
---|
532 | } |
---|
533 | |
---|
534 | ast::Type * Demangler::parseEnum( ast::CV::Qualifiers tq ) { |
---|
535 | PRINT( std::cerr << "enum..." << std::endl; ) |
---|
536 | std::string name; |
---|
537 | if ( !extractName(name) ) return nullptr; |
---|
538 | return new ast::EnumInstType( name, tq ); |
---|
539 | } |
---|
540 | |
---|
541 | ast::Type * Demangler::parseType( ast::CV::Qualifiers tq ) { |
---|
542 | PRINT( std::cerr << "type..." << std::endl; ) |
---|
543 | std::string name; |
---|
544 | if ( !extractName(name) ) return nullptr; |
---|
545 | PRINT( std::cerr << "typename..." << name << std::endl; ) |
---|
546 | return new ast::TypeInstType( name, ast::TypeDecl::Dtype, tq ); |
---|
547 | } |
---|
548 | |
---|
549 | ast::Type * Demangler::parseType() { |
---|
550 | if (done()) return nullptr; |
---|
551 | |
---|
552 | std::list<TypeDecl *> forall; |
---|
553 | if (isPrefix(Encoding::forall)) { |
---|
554 | PRINT( std::cerr << "polymorphic with..." << std::endl; ) |
---|
555 | size_t dcount, fcount, vcount, acount; |
---|
556 | if ( !extractNumber(dcount) ) return nullptr; |
---|
557 | PRINT( std::cerr << dcount << " dtypes" << std::endl; ) |
---|
558 | if ( !expect('_') ) return nullptr; |
---|
559 | if ( !extractNumber(fcount) ) return nullptr; |
---|
560 | PRINT( std::cerr << fcount << " ftypes" << std::endl; ) |
---|
561 | if ( !expect('_')) return nullptr; |
---|
562 | if ( !extractNumber(vcount)) return nullptr; |
---|
563 | PRINT( std::cerr << vcount << " ttypes" << std::endl; ) |
---|
564 | if ( !expect('_') ) return nullptr; |
---|
565 | if ( !extractNumber(acount) ) return nullptr; |
---|
566 | PRINT( std::cerr << acount << " assertions" << std::endl; ) |
---|
567 | if ( !expect('_') ) return nullptr; |
---|
568 | for ( size_t i = 0 ; i < acount ; ++i ) { |
---|
569 | // TODO: need to recursively parse assertions, but for now just return nullptr so that |
---|
570 | // demangler does not crash if there are assertions |
---|
571 | return nullptr; |
---|
572 | } |
---|
573 | if ( !expect('_') ) return nullptr; |
---|
574 | } |
---|
575 | |
---|
576 | ast::CV::Qualifiers tq; |
---|
577 | while (true) { |
---|
578 | auto qual = std::find_if(Encoding::qualifiers.begin(), Encoding::qualifiers.end(), [this](decltype(Encoding::qualifiers)::value_type val) { |
---|
579 | return isPrefix(val.second); |
---|
580 | }); |
---|
581 | if (qual == Encoding::qualifiers.end()) break; |
---|
582 | tq |= qual->first; |
---|
583 | } |
---|
584 | |
---|
585 | // Find the correct type parser and then apply it. |
---|
586 | auto iter = std::find_if(parsers.begin(), parsers.end(), [this](std::pair<std::string, Parser> & p) { |
---|
587 | return isPrefix(p.first); |
---|
588 | }); |
---|
589 | assertf(iter != parsers.end(), "Unhandled type letter: %c at index: %zd", cur(), index); |
---|
590 | ast::Type * ret = iter->second(tq); |
---|
591 | if ( !ret ) return nullptr; |
---|
592 | return ret; |
---|
593 | } |
---|
594 | |
---|
595 | bool Demangler::parse( std::string & name, ast::Type *& type) { |
---|
596 | if ( !stripMangleName(name) ) return false; |
---|
597 | PRINT( std::cerr << "stripped name: " << name << std::endl; ) |
---|
598 | ast::Type * t = parseType(); |
---|
599 | if ( !t ) return false; |
---|
600 | type = t; |
---|
601 | return true; |
---|
602 | } |
---|
603 | |
---|
604 | std::string demangle( const std::string & mangleName ) { |
---|
605 | using namespace CodeGen; |
---|
606 | Demangler demangler( mangleName ); |
---|
607 | std::string name; |
---|
608 | ast::Type * type = nullptr; |
---|
609 | if ( !demangler.parse( name, type ) ) return mangleName; |
---|
610 | ast::readonly<ast::Type> roType = type; |
---|
611 | if ( auto info = operatorLookupByOutput( name ) ) name = info->inputName; |
---|
612 | return genType( type, name, Options( false, false, false, false ) ); |
---|
613 | } |
---|
614 | |
---|
615 | } // namespace |
---|
616 | |
---|
617 | } // namespace Mangle |
---|
618 | |
---|
619 | extern "C" { |
---|
620 | char * cforall_demangle(const char * mangleName, int option __attribute__((unused))) { |
---|
621 | const std::string & demangleName = Mangle::demangle(mangleName); |
---|
622 | return strdup(demangleName.c_str()); |
---|
623 | } |
---|
624 | } |
---|
625 | |
---|
626 | // Local Variables: // |
---|
627 | // tab-width: 4 // |
---|
628 | // mode: c++ // |
---|
629 | // compile-command: "make install" // |
---|
630 | // End: // |
---|