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 | // Demangler.cc -- |
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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 : Rob Schluntz |
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12 | // Last Modified On : Thu Jul 19 12:54:35 2018 |
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13 | // Update Count : 2 |
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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 "CodeGen/GenType.h" |
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20 | #include "Common/PassVisitor.h" |
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21 | #include "Mangler.h" |
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22 | #include "SynTree/Type.h" |
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23 | #include "SynTree/Declaration.h" |
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24 | |
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25 | #define DEBUG |
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26 | #ifdef DEBUG |
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27 | #define PRINT(x) x |
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28 | #else |
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29 | #define PRINT(x) {} |
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30 | #endif |
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31 | |
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32 | namespace { |
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33 | struct GenType : public WithVisitorRef<GenType>, public WithShortCircuiting { |
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34 | std::string typeString; |
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35 | GenType( const std::string &typeString ); |
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36 | |
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37 | void previsit( BaseSyntaxNode * ); |
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38 | void postvisit( BaseSyntaxNode * ); |
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39 | |
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40 | void postvisit( FunctionType * funcType ); |
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41 | void postvisit( VoidType * voidType ); |
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42 | void postvisit( BasicType * basicType ); |
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43 | void postvisit( PointerType * pointerType ); |
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44 | void postvisit( ArrayType * arrayType ); |
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45 | void postvisit( ReferenceType * refType ); |
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46 | void postvisit( StructInstType * structInst ); |
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47 | void postvisit( UnionInstType * unionInst ); |
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48 | void postvisit( EnumInstType * enumInst ); |
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49 | void postvisit( TypeInstType * typeInst ); |
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50 | void postvisit( TupleType * tupleType ); |
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51 | void postvisit( VarArgsType * varArgsType ); |
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52 | void postvisit( ZeroType * zeroType ); |
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53 | void postvisit( OneType * oneType ); |
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54 | void postvisit( GlobalScopeType * globalType ); |
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55 | void postvisit( QualifiedType * qualType ); |
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56 | |
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57 | private: |
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58 | void handleQualifiers( Type *type ); |
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59 | std::string handleGeneric( ReferenceToType * refType ); |
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60 | void genArray( const Type::Qualifiers &qualifiers, Type *base, Expression *dimension, bool isVarLen, bool isStatic ); |
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61 | }; |
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62 | |
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63 | std::string genDemangleType( Type * type, const std::string & baseString ) { |
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64 | PassVisitor<GenType> gt( baseString ); |
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65 | assert( type ); |
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66 | type->accept( gt ); |
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67 | return gt.pass.typeString; |
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68 | } |
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69 | |
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70 | GenType::GenType( const std::string &typeString ) : typeString( typeString ) {} |
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71 | |
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72 | // *** BaseSyntaxNode |
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73 | void GenType::previsit( BaseSyntaxNode * ) { |
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74 | // turn off automatic recursion for all nodes, to allow each visitor to |
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75 | // precisely control the order in which its children are visited. |
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76 | visit_children = false; |
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77 | } |
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78 | |
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79 | void GenType::postvisit( BaseSyntaxNode * node ) { |
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80 | std::stringstream ss; |
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81 | node->print( ss ); |
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82 | assertf( false, "Unhandled node reached in GenType: %s", ss.str().c_str() ); |
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83 | } |
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84 | |
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85 | void GenType::postvisit( VoidType * voidType ) { |
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86 | typeString = "void " + typeString; |
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87 | handleQualifiers( voidType ); |
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88 | } |
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89 | |
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90 | void GenType::postvisit( BasicType * basicType ) { |
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91 | BasicType::Kind kind = basicType->kind; |
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92 | assert( 0 <= kind && kind < BasicType::NUMBER_OF_BASIC_TYPES ); |
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93 | typeString = std::string( BasicType::typeNames[kind] ) + " " + typeString; |
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94 | handleQualifiers( basicType ); |
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95 | } |
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96 | |
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97 | void GenType::genArray( const Type::Qualifiers & qualifiers, Type * base, Expression *dimension, bool isVarLen, bool ) { |
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98 | std::ostringstream os; |
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99 | if ( typeString != "" ) { |
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100 | if ( typeString[ 0 ] == '*' ) { |
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101 | os << "(" << typeString << ")"; |
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102 | } else { |
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103 | os << typeString; |
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104 | } // if |
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105 | } // if |
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106 | os << "["; |
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107 | |
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108 | if ( qualifiers.is_const ) { |
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109 | os << "const "; |
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110 | } // if |
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111 | if ( qualifiers.is_volatile ) { |
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112 | os << "volatile "; |
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113 | } // if |
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114 | if ( qualifiers.is_restrict ) { |
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115 | os << "__restrict "; |
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116 | } // if |
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117 | if ( qualifiers.is_atomic ) { |
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118 | os << "_Atomic "; |
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119 | } // if |
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120 | if ( dimension != 0 ) { |
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121 | // TODO: ??? |
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122 | // PassVisitor<CodeGenerator> cg( os, pretty, genC, lineMarks ); |
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123 | // dimension->accept( cg ); |
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124 | } else if ( isVarLen ) { |
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125 | // no dimension expression on a VLA means it came in with the * token |
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126 | os << "*"; |
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127 | } // if |
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128 | os << "]"; |
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129 | |
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130 | typeString = os.str(); |
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131 | |
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132 | base->accept( *visitor ); |
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133 | } |
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134 | |
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135 | void GenType::postvisit( PointerType * pointerType ) { |
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136 | assert( pointerType->base != 0); |
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137 | if ( pointerType->get_isStatic() || pointerType->get_isVarLen() || pointerType->dimension ) { |
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138 | assert(false); |
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139 | genArray( pointerType->get_qualifiers(), pointerType->base, pointerType->dimension, pointerType->get_isVarLen(), pointerType->get_isStatic() ); |
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140 | } else { |
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141 | handleQualifiers( pointerType ); |
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142 | if ( typeString[ 0 ] == '?' ) { |
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143 | typeString = "* " + typeString; |
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144 | } else { |
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145 | typeString = "*" + typeString; |
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146 | } // if |
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147 | pointerType->base->accept( *visitor ); |
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148 | } // if |
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149 | } |
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150 | |
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151 | void GenType::postvisit( ArrayType * arrayType ) { |
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152 | genArray( arrayType->get_qualifiers(), arrayType->base, arrayType->dimension, arrayType->get_isVarLen(), arrayType->get_isStatic() ); |
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153 | } |
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154 | |
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155 | void GenType::postvisit( ReferenceType * refType ) { |
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156 | assert( false ); |
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157 | assert( refType->base != 0); |
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158 | handleQualifiers( refType ); |
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159 | typeString = "&" + typeString; |
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160 | refType->base->accept( *visitor ); |
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161 | } |
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162 | |
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163 | void GenType::postvisit( FunctionType * funcType ) { |
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164 | std::ostringstream os; |
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165 | |
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166 | if ( typeString != "" ) { |
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167 | if ( typeString[0] == '*' ) { |
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168 | os << "(" << typeString << ")"; |
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169 | } else { |
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170 | os << typeString; |
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171 | } // if |
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172 | } // if |
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173 | |
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174 | /************* parameters ***************/ |
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175 | const std::list<DeclarationWithType *> &pars = funcType->parameters; |
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176 | |
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177 | if ( pars.empty() ) { |
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178 | if ( funcType->get_isVarArgs() ) { |
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179 | os << "()"; |
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180 | } else { |
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181 | os << "(void)"; |
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182 | } // if |
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183 | } else { |
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184 | os << "(" ; |
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185 | |
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186 | unsigned int i = 0; |
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187 | for (DeclarationWithType * p : pars) { |
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188 | os << genDemangleType( p->get_type(), "" ); |
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189 | if (++i != pars.size()) os << ", "; |
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190 | } |
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191 | |
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192 | if ( funcType->get_isVarArgs() ) { |
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193 | os << ", ..."; |
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194 | } // if |
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195 | os << ")"; |
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196 | } // if |
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197 | |
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198 | typeString = os.str(); |
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199 | |
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200 | if ( funcType->returnVals.size() == 0 ) { |
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201 | typeString += ": void"; |
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202 | } else { |
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203 | typeString += ": " + genDemangleType(funcType->returnVals.front()->get_type(), ""); |
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204 | } // if |
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205 | |
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206 | // add forall |
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207 | if( ! funcType->forall.empty() ) { |
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208 | std::ostringstream os; |
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209 | os << "forall("; |
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210 | unsigned int i = 0; |
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211 | for ( auto td : funcType->forall ) { |
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212 | os << td->typeString() << " " << td->name; |
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213 | if (! td->assertions.empty()) { |
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214 | os << " | { "; |
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215 | unsigned int j = 0; |
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216 | for (DeclarationWithType * assert : td->assertions) { |
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217 | os << genDemangleType(assert->get_type(), assert->name); |
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218 | if (++j != td->assertions.size()) os << ", "; |
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219 | } |
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220 | os << "}"; |
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221 | } |
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222 | if (++i != funcType->forall.size()) os << ", "; |
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223 | } |
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224 | os << ")"; |
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225 | typeString = typeString + " -> " + os.str(); |
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226 | } |
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227 | } |
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228 | |
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229 | std::string GenType::handleGeneric( ReferenceToType * refType ) { |
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230 | if ( ! refType->parameters.empty() ) { |
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231 | std::ostringstream os; |
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232 | // TODO: ??? |
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233 | // PassVisitor<CodeGenerator> cg( os, pretty, genC, lineMarks ); |
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234 | os << "("; |
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235 | // cg.pass.genCommaList( refType->parameters.begin(), refType->parameters.end() ); |
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236 | os << ") "; |
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237 | return os.str(); |
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238 | } |
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239 | return ""; |
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240 | } |
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241 | |
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242 | void GenType::postvisit( StructInstType * structInst ) { |
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243 | typeString = "struct " + structInst->name + handleGeneric( structInst ) + " " + typeString; |
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244 | handleQualifiers( structInst ); |
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245 | } |
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246 | |
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247 | void GenType::postvisit( UnionInstType * unionInst ) { |
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248 | typeString = "union " + unionInst->name + handleGeneric( unionInst ) + " " + typeString; |
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249 | handleQualifiers( unionInst ); |
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250 | } |
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251 | |
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252 | void GenType::postvisit( EnumInstType * enumInst ) { |
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253 | typeString = "enum " + enumInst->name + " " + typeString; |
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254 | handleQualifiers( enumInst ); |
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255 | } |
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256 | |
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257 | void GenType::postvisit( TypeInstType * typeInst ) { |
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258 | typeString = typeInst->name + " " + typeString; |
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259 | handleQualifiers( typeInst ); |
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260 | } |
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261 | |
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262 | void GenType::postvisit( TupleType * tupleType ) { |
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263 | unsigned int i = 0; |
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264 | std::ostringstream os; |
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265 | os << "["; |
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266 | for ( Type * t : *tupleType ) { |
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267 | i++; |
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268 | os << genDemangleType( t, "" ) << (i == tupleType->size() ? "" : ", "); |
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269 | } |
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270 | os << "] "; |
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271 | typeString = os.str() + typeString; |
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272 | } |
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273 | |
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274 | void GenType::postvisit( VarArgsType * varArgsType ) { |
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275 | typeString = "__builtin_va_list " + typeString; |
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276 | handleQualifiers( varArgsType ); |
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277 | } |
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278 | |
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279 | void GenType::postvisit( ZeroType * zeroType ) { |
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280 | // ideally these wouldn't hit codegen at all, but should be safe to make them ints |
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281 | typeString = "zero_t " + typeString; |
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282 | handleQualifiers( zeroType ); |
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283 | } |
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284 | |
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285 | void GenType::postvisit( OneType * oneType ) { |
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286 | // ideally these wouldn't hit codegen at all, but should be safe to make them ints |
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287 | typeString = "one_t " + typeString; |
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288 | handleQualifiers( oneType ); |
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289 | } |
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290 | |
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291 | void GenType::postvisit( GlobalScopeType * globalType ) { |
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292 | handleQualifiers( globalType ); |
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293 | } |
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294 | |
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295 | void GenType::postvisit( QualifiedType * qualType ) { |
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296 | std::ostringstream os; |
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297 | os << genDemangleType( qualType->parent, "" ) << "." << genDemangleType( qualType->child, "" ) << typeString; |
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298 | typeString = os.str(); |
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299 | handleQualifiers( qualType ); |
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300 | } |
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301 | |
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302 | void GenType::handleQualifiers( Type * type ) { |
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303 | if ( type->get_const() ) { |
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304 | typeString = "const " + typeString; |
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305 | } // if |
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306 | if ( type->get_volatile() ) { |
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307 | typeString = "volatile " + typeString; |
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308 | } // if |
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309 | if ( type->get_restrict() ) { |
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310 | typeString = "__restrict " + typeString; |
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311 | } // if |
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312 | if ( type->get_atomic() ) { |
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313 | typeString = "_Atomic " + typeString; |
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314 | } // if |
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315 | if ( type->get_lvalue() ) { |
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316 | // when not generating C code, print lvalue for debugging. |
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317 | typeString = "lvalue " + typeString; |
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318 | } |
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319 | } |
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320 | } |
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321 | |
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322 | |
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323 | namespace SymTab { |
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324 | namespace Mangler { |
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325 | namespace { |
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326 | struct StringView { |
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327 | private: |
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328 | std::string str; |
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329 | size_t idx = 0; |
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330 | // typedef Type * (StringView::*parser)(Type::Qualifiers); |
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331 | typedef std::function<Type * (Type::Qualifiers)> parser; |
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332 | std::vector<std::pair<std::string, parser>> parsers; |
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333 | public: |
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334 | StringView(const std::string & str); |
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335 | |
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336 | bool done() const { return idx >= str.size(); } |
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337 | char cur() const { assert(! done()); return str[idx]; } |
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338 | |
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339 | bool expect(char ch) { return str[idx++] == ch; } |
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340 | void next(size_t inc = 1) { idx += inc; } |
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341 | |
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342 | /// determines if `pref` is a prefix of `str` |
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343 | bool isPrefix(const std::string & pref); |
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344 | bool extractNumber(size_t & out); |
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345 | bool extractName(std::string & out); |
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346 | bool stripMangleName(std::string & name); |
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347 | |
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348 | Type * parseFunction(Type::Qualifiers tq); |
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349 | Type * parseTuple(Type::Qualifiers tq); |
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350 | Type * parseVoid(Type::Qualifiers tq); |
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351 | Type * parsePointer(Type::Qualifiers tq); |
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352 | Type * parseArray(Type::Qualifiers tq); |
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353 | Type * parseStruct(Type::Qualifiers tq); |
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354 | Type * parseUnion(Type::Qualifiers tq); |
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355 | Type * parseEnum(Type::Qualifiers tq); |
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356 | Type * parseType(Type::Qualifiers tq); |
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357 | |
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358 | Type * parseType(); |
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359 | bool parse(std::string & name, Type *& type); |
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360 | }; |
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361 | |
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362 | StringView::StringView(const std::string & str) : str(str) { |
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363 | // basic types |
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364 | for (size_t k = 0; k < BasicType::NUMBER_OF_BASIC_TYPES; ++k) { |
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365 | parsers.emplace_back(Encoding::basicTypes[k], [k](Type::Qualifiers tq) { |
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366 | PRINT( std::cerr << "basic type: " << k << std::endl; ) |
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367 | return new BasicType(tq, (BasicType::Kind)k); |
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368 | }); |
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369 | } |
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370 | // type variable types |
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371 | for (size_t k = 0; k < TypeDecl::NUMBER_OF_KINDS; ++k) { |
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372 | static const std::string typeVariableNames[] = { "DT", "FT", "TT", }; |
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373 | static_assert( |
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374 | sizeof(typeVariableNames)/sizeof(typeVariableNames[0]) == TypeDecl::NUMBER_OF_KINDS, |
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375 | "Each type variable kind should have a demangle name prefix" |
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376 | ); |
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377 | parsers.emplace_back(Encoding::typeVariables[k], [k, this](Type::Qualifiers tq) -> TypeInstType * { |
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378 | PRINT( std::cerr << "type variable type: " << k << std::endl; ) |
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379 | size_t N; |
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380 | if (! extractNumber(N)) return nullptr; |
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381 | return new TypeInstType(tq, toString(typeVariableNames[k], N), (TypeDecl::Kind)k != TypeDecl::Ftype); |
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382 | }); |
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383 | } |
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384 | // everything else |
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385 | parsers.emplace_back(Encoding::void_t, [this](Type::Qualifiers tq) { return parseVoid(tq); }); |
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386 | parsers.emplace_back(Encoding::function, [this](Type::Qualifiers tq) { return parseFunction(tq); }); |
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387 | parsers.emplace_back(Encoding::pointer, [this](Type::Qualifiers tq) { return parsePointer(tq); }); |
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388 | parsers.emplace_back(Encoding::array, [this](Type::Qualifiers tq) { return parseArray(tq); }); |
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389 | parsers.emplace_back(Encoding::tuple, [this](Type::Qualifiers tq) { return parseTuple(tq); }); |
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390 | parsers.emplace_back(Encoding::struct_t, [this](Type::Qualifiers tq) { return parseStruct(tq); }); |
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391 | parsers.emplace_back(Encoding::union_t, [this](Type::Qualifiers tq) { return parseUnion(tq); }); |
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392 | parsers.emplace_back(Encoding::enum_t, [this](Type::Qualifiers tq) { return parseEnum(tq); }); |
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393 | parsers.emplace_back(Encoding::type, [this](Type::Qualifiers tq) { return parseType(tq); }); |
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394 | parsers.emplace_back(Encoding::zero, [](Type::Qualifiers tq) { return new ZeroType(tq); }); |
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395 | parsers.emplace_back(Encoding::one, [](Type::Qualifiers tq) { return new OneType(tq); }); |
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396 | } |
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397 | |
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398 | bool StringView::extractNumber(size_t & out) { |
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399 | std::stringstream numss; |
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400 | if (idx >= str.size()) return false; |
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401 | while (isdigit(str[idx])) { |
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402 | numss << str[idx]; |
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403 | ++idx; |
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404 | if (idx == str.size()) break; |
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405 | } |
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406 | if (! (numss >> out)) return false; |
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407 | PRINT( std::cerr << "extractNumber success: " << out << std::endl; ) |
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408 | return true; |
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409 | } |
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410 | |
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411 | bool StringView::extractName(std::string & out) { |
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412 | size_t len; |
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413 | if (! extractNumber(len)) return false; |
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414 | if (idx+len > str.size()) return false; |
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415 | out = str.substr(idx, len); |
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416 | idx += len; |
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417 | PRINT( std::cerr << "extractName success: " << out << std::endl; ) |
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418 | return true; |
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419 | } |
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420 | |
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421 | bool StringView::isPrefix(const std::string & pref) { |
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422 | if ( pref.size() > str.size()-idx ) return false; |
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423 | auto its = std::mismatch( pref.begin(), pref.end(), std::next(str.begin(), idx) ); |
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424 | if (its.first == pref.end()) { |
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425 | idx += pref.size(); |
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426 | return true; |
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427 | } |
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428 | return false; |
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429 | } |
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430 | |
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431 | // 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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432 | bool StringView::stripMangleName(std::string & name) { |
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433 | PRINT( std::cerr << "====== " << str.size() << " " << str << std::endl; ) |
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434 | if (str.size() < 2+Encoding::manglePrefix.size()) return false; // +2 for at least _1 suffix |
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435 | if (! isPrefix(Encoding::manglePrefix) || ! isdigit(str.back())) return false; |
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436 | |
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437 | // get name |
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438 | if (! extractName(name)) return false; |
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439 | |
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440 | // find bounds for type |
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441 | PRINT( std::cerr << idx << " " << str.size() << std::endl; ) |
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442 | PRINT( std::cerr << "["); |
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443 | while (isdigit(str.back())) { |
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444 | PRINT(std::cerr << "."); |
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445 | str.pop_back(); |
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446 | if (str.size() <= idx) return false; |
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447 | } |
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448 | PRINT( std::cerr << "]" << std::endl ); |
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449 | if (str.back() != '_') return false; |
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450 | str.pop_back(); |
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451 | PRINT( std::cerr << str.size() << " " << name << " " << str.substr(idx) << std::endl; ) |
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452 | return str.size() > idx; |
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453 | } |
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454 | |
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455 | Type * StringView::parseFunction(Type::Qualifiers tq) { |
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456 | PRINT( std::cerr << "function..." << std::endl; ) |
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457 | if (done()) return nullptr; |
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458 | FunctionType * ftype = new FunctionType( tq, false ); |
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459 | std::unique_ptr<Type> manager(ftype); |
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460 | Type * retVal = parseType(); |
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461 | if (! retVal) return nullptr; |
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462 | PRINT( std::cerr << "with return type: " << retVal << std::endl; ) |
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463 | ftype->returnVals.push_back(ObjectDecl::newObject("", retVal, nullptr)); |
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464 | if (done() || ! expect('_')) return nullptr; |
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465 | while (! done()) { |
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466 | PRINT( std::cerr << "got ch: " << cur() << std::endl; ) |
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467 | if (cur() == '_') return manager.release(); |
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468 | Type * param = parseType(); |
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469 | if (! param) return nullptr; |
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470 | PRINT( std::cerr << "with parameter : " << param << std::endl; ) |
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471 | ftype->parameters.push_back(ObjectDecl::newObject("", param, nullptr)); |
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472 | } |
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473 | return nullptr; |
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474 | } |
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475 | |
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476 | Type * StringView::parseTuple(Type::Qualifiers tq) { |
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477 | PRINT( std::cerr << "tuple..." << std::endl; ) |
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478 | std::list< Type * > types; |
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479 | size_t ncomponents; |
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480 | if (! extractNumber(ncomponents)) return nullptr; |
---|
481 | for (size_t i = 0; i < ncomponents; ++i) { |
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482 | // TODO: delete all on return |
---|
483 | if (done()) return nullptr; |
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484 | PRINT( std::cerr << "got ch: " << cur() << std::endl; ) |
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485 | Type * t = parseType(); |
---|
486 | if (! t) return nullptr; |
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487 | PRINT( std::cerr << "with type : " << t << std::endl; ) |
---|
488 | types.push_back(t); |
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489 | } |
---|
490 | return new TupleType( tq, types ); |
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491 | } |
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492 | |
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493 | Type * StringView::parseVoid(Type::Qualifiers tq) { |
---|
494 | return new VoidType( tq ); |
---|
495 | } |
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496 | |
---|
497 | Type * StringView::parsePointer(Type::Qualifiers tq) { |
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498 | PRINT( std::cerr << "pointer..." << std::endl; ) |
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499 | Type * t = parseType(); |
---|
500 | if (! t) return nullptr; |
---|
501 | return new PointerType( tq, t ); |
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502 | } |
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503 | |
---|
504 | Type * StringView::parseArray(Type::Qualifiers tq) { |
---|
505 | PRINT( std::cerr << "array..." << std::endl; ) |
---|
506 | size_t length; |
---|
507 | if (! extractNumber(length)) return nullptr; |
---|
508 | Type * t = parseType(); |
---|
509 | if (! t) return nullptr; |
---|
510 | return new ArrayType( tq, t, new ConstantExpr( Constant::from_ulong(length) ), false, false ); |
---|
511 | } |
---|
512 | |
---|
513 | Type * StringView::parseStruct(Type::Qualifiers tq) { |
---|
514 | PRINT( std::cerr << "struct..." << std::endl; ) |
---|
515 | std::string name; |
---|
516 | if (! extractName(name)) return nullptr; |
---|
517 | return new StructInstType(tq, name); |
---|
518 | } |
---|
519 | |
---|
520 | Type * StringView::parseUnion(Type::Qualifiers tq) { |
---|
521 | PRINT( std::cerr << "union..." << std::endl; ) |
---|
522 | std::string name; |
---|
523 | if (! extractName(name)) return nullptr; |
---|
524 | return new UnionInstType(tq, name); |
---|
525 | } |
---|
526 | |
---|
527 | Type * StringView::parseEnum(Type::Qualifiers tq) { |
---|
528 | PRINT( std::cerr << "enum..." << std::endl; ) |
---|
529 | std::string name; |
---|
530 | if (! extractName(name)) return nullptr; |
---|
531 | return new EnumInstType(tq, name); |
---|
532 | } |
---|
533 | |
---|
534 | Type * StringView::parseType(Type::Qualifiers tq) { |
---|
535 | PRINT( std::cerr << "type..." << std::endl; ) |
---|
536 | std::string name; |
---|
537 | if (! extractName(name)) return nullptr; |
---|
538 | PRINT( std::cerr << "typename..." << name << std::endl; ) |
---|
539 | return new TypeInstType(tq, name, false); |
---|
540 | } |
---|
541 | |
---|
542 | Type * StringView::parseType() { |
---|
543 | if (done()) return nullptr; |
---|
544 | |
---|
545 | std::list<TypeDecl *> forall; |
---|
546 | if (isPrefix(Encoding::forall)) { |
---|
547 | PRINT( std::cerr << "polymorphic with..." << std::endl; ) |
---|
548 | size_t dcount, fcount, vcount, acount; |
---|
549 | if (! extractNumber(dcount)) return nullptr; |
---|
550 | PRINT( std::cerr << dcount << " dtypes" << std::endl; ) |
---|
551 | if (! expect('_')) return nullptr; |
---|
552 | if (! extractNumber(fcount)) return nullptr; |
---|
553 | PRINT( std::cerr << fcount << " ftypes" << std::endl; ) |
---|
554 | if (! expect('_')) return nullptr; |
---|
555 | if (! extractNumber(vcount)) return nullptr; |
---|
556 | PRINT( std::cerr << vcount << " ttypes" << std::endl; ) |
---|
557 | if (! expect('_')) return nullptr; |
---|
558 | if (! extractNumber(acount)) return nullptr; |
---|
559 | PRINT( std::cerr << acount << " assertions" << std::endl; ) |
---|
560 | if (! expect('_')) return nullptr; |
---|
561 | for (size_t i = 0; i < acount; ++i) { |
---|
562 | // TODO: need to recursively parse assertions, but for now just return nullptr so that |
---|
563 | // demangler does not crash if there are assertions |
---|
564 | return nullptr; |
---|
565 | } |
---|
566 | if (! expect('_')) return nullptr; |
---|
567 | } |
---|
568 | |
---|
569 | // qualifiers |
---|
570 | Type::Qualifiers tq; |
---|
571 | while (true) { |
---|
572 | auto qual = std::find_if(Encoding::qualifiers.begin(), Encoding::qualifiers.end(), [this](decltype(Encoding::qualifiers)::value_type val) { |
---|
573 | return isPrefix(val.second); |
---|
574 | }); |
---|
575 | if (qual == Encoding::qualifiers.end()) break; |
---|
576 | tq |= qual->first; |
---|
577 | } |
---|
578 | |
---|
579 | // find the correct type parser and use it |
---|
580 | auto iter = std::find_if(parsers.begin(), parsers.end(), [this](std::pair<std::string, parser> & p) { |
---|
581 | return isPrefix(p.first); |
---|
582 | }); |
---|
583 | assertf(iter != parsers.end(), "Unhandled type letter: %c at index: %zd", cur(), idx); |
---|
584 | Type * ret = iter->second(tq); |
---|
585 | if (! ret) return nullptr; |
---|
586 | ret->forall = std::move(forall); |
---|
587 | return ret; |
---|
588 | } |
---|
589 | |
---|
590 | bool StringView::parse(std::string & name, Type *& type) { |
---|
591 | if (! stripMangleName(name)) return false; |
---|
592 | PRINT( std::cerr << "stripped name: " << name << std::endl; ) |
---|
593 | Type * t = parseType(); |
---|
594 | if (! t) return false; |
---|
595 | type = t; |
---|
596 | return true; |
---|
597 | } |
---|
598 | |
---|
599 | std::string demangle(const std::string & mangleName) { |
---|
600 | SymTab::Mangler::StringView view(mangleName); |
---|
601 | std::string name; |
---|
602 | Type * type = nullptr; |
---|
603 | if (! view.parse(name, type)) return mangleName; |
---|
604 | std::unique_ptr<Type> manager(type); |
---|
605 | return genDemangleType(type, name); |
---|
606 | } |
---|
607 | } // namespace |
---|
608 | } // namespace Mangler |
---|
609 | } // namespace SymTab |
---|
610 | |
---|
611 | extern "C" { |
---|
612 | char * cforall_demangle(const char * mangleName, int option __attribute__((unused))) { |
---|
613 | const std::string & demangleName = SymTab::Mangler::demangle(mangleName); |
---|
614 | return strdup(demangleName.c_str()); |
---|
615 | } |
---|
616 | } |
---|
617 | |
---|
618 | // Local Variables: // |
---|
619 | // tab-width: 4 // |
---|
620 | // mode: c++ // |
---|
621 | // compile-command: "make install" // |
---|
622 | // End: // |
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