[d1e0979] | 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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[4071778] | 11 | // Last Modified By : Peter A. Buhr |
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| 12 | // Last Modified On : Tue Jul 30 13:46:33 2019 |
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| 13 | // Update Count : 3 |
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[d1e0979] | 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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[04c77791] | 25 | #define DEBUG |
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[d1e0979] | 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 | } |
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| 316 | } |
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| 317 | |
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| 318 | |
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| 319 | namespace SymTab { |
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| 320 | namespace Mangler { |
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| 321 | namespace { |
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[c20fafd] | 322 | struct StringView { |
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| 323 | private: |
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| 324 | std::string str; |
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| 325 | size_t idx = 0; |
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| 326 | // typedef Type * (StringView::*parser)(Type::Qualifiers); |
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| 327 | typedef std::function<Type * (Type::Qualifiers)> parser; |
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| 328 | std::vector<std::pair<std::string, parser>> parsers; |
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| 329 | public: |
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| 330 | StringView(const std::string & str); |
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| 331 | |
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| 332 | bool done() const { return idx >= str.size(); } |
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| 333 | char cur() const { assert(! done()); return str[idx]; } |
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| 334 | |
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| 335 | bool expect(char ch) { return str[idx++] == ch; } |
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| 336 | void next(size_t inc = 1) { idx += inc; } |
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| 337 | |
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| 338 | /// determines if `pref` is a prefix of `str` |
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| 339 | bool isPrefix(const std::string & pref); |
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| 340 | bool extractNumber(size_t & out); |
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| 341 | bool extractName(std::string & out); |
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| 342 | bool stripMangleName(std::string & name); |
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| 343 | |
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| 344 | Type * parseFunction(Type::Qualifiers tq); |
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| 345 | Type * parseTuple(Type::Qualifiers tq); |
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| 346 | Type * parseVoid(Type::Qualifiers tq); |
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| 347 | Type * parsePointer(Type::Qualifiers tq); |
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[2f9768f] | 348 | Type * parseArray(Type::Qualifiers tq); |
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[c20fafd] | 349 | Type * parseStruct(Type::Qualifiers tq); |
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[38587bc] | 350 | Type * parseUnion(Type::Qualifiers tq); |
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| 351 | Type * parseEnum(Type::Qualifiers tq); |
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[efa8b6a] | 352 | Type * parseType(Type::Qualifiers tq); |
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[c20fafd] | 353 | |
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| 354 | Type * parseType(); |
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| 355 | bool parse(std::string & name, Type *& type); |
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| 356 | }; |
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| 357 | |
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| 358 | StringView::StringView(const std::string & str) : str(str) { |
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| 359 | // basic types |
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| 360 | for (size_t k = 0; k < BasicType::NUMBER_OF_BASIC_TYPES; ++k) { |
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[8316a49] | 361 | parsers.emplace_back(Encoding::basicTypes[k], [k](Type::Qualifiers tq) { |
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[c20fafd] | 362 | PRINT( std::cerr << "basic type: " << k << std::endl; ) |
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| 363 | return new BasicType(tq, (BasicType::Kind)k); |
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| 364 | }); |
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| 365 | } |
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[04c77791] | 366 | // type variable types |
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| 367 | for (size_t k = 0; k < TypeDecl::NUMBER_OF_KINDS; ++k) { |
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[550e819] | 368 | static const std::string typeVariableNames[] = { "DT", "FT", "TT", }; |
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| 369 | static_assert( |
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| 370 | sizeof(typeVariableNames)/sizeof(typeVariableNames[0]) == TypeDecl::NUMBER_OF_KINDS, |
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| 371 | "Each type variable kind should have a demangle name prefix" |
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| 372 | ); |
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[04c77791] | 373 | parsers.emplace_back(Encoding::typeVariables[k], [k, this](Type::Qualifiers tq) -> TypeInstType * { |
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| 374 | PRINT( std::cerr << "type variable type: " << k << std::endl; ) |
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[550e819] | 375 | size_t N; |
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| 376 | if (! extractNumber(N)) return nullptr; |
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| 377 | return new TypeInstType(tq, toString(typeVariableNames[k], N), (TypeDecl::Kind)k != TypeDecl::Ftype); |
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[04c77791] | 378 | }); |
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| 379 | } |
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[c20fafd] | 380 | // everything else |
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| 381 | parsers.emplace_back(Encoding::void_t, [this](Type::Qualifiers tq) { return parseVoid(tq); }); |
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| 382 | parsers.emplace_back(Encoding::function, [this](Type::Qualifiers tq) { return parseFunction(tq); }); |
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| 383 | parsers.emplace_back(Encoding::pointer, [this](Type::Qualifiers tq) { return parsePointer(tq); }); |
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[2f9768f] | 384 | parsers.emplace_back(Encoding::array, [this](Type::Qualifiers tq) { return parseArray(tq); }); |
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[c20fafd] | 385 | parsers.emplace_back(Encoding::tuple, [this](Type::Qualifiers tq) { return parseTuple(tq); }); |
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| 386 | parsers.emplace_back(Encoding::struct_t, [this](Type::Qualifiers tq) { return parseStruct(tq); }); |
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[38587bc] | 387 | parsers.emplace_back(Encoding::union_t, [this](Type::Qualifiers tq) { return parseUnion(tq); }); |
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| 388 | parsers.emplace_back(Encoding::enum_t, [this](Type::Qualifiers tq) { return parseEnum(tq); }); |
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[efa8b6a] | 389 | parsers.emplace_back(Encoding::type, [this](Type::Qualifiers tq) { return parseType(tq); }); |
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[56b53b2] | 390 | parsers.emplace_back(Encoding::zero, [](Type::Qualifiers tq) { return new ZeroType(tq); }); |
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| 391 | parsers.emplace_back(Encoding::one, [](Type::Qualifiers tq) { return new OneType(tq); }); |
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[c20fafd] | 392 | } |
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| 393 | |
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| 394 | bool StringView::extractNumber(size_t & out) { |
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| 395 | std::stringstream numss; |
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[efa8b6a] | 396 | if (idx >= str.size()) return false; |
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[c20fafd] | 397 | while (isdigit(str[idx])) { |
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| 398 | numss << str[idx]; |
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| 399 | ++idx; |
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[efa8b6a] | 400 | if (idx == str.size()) break; |
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[c20fafd] | 401 | } |
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| 402 | if (! (numss >> out)) return false; |
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[efa8b6a] | 403 | PRINT( std::cerr << "extractNumber success: " << out << std::endl; ) |
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[c20fafd] | 404 | return true; |
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| 405 | } |
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| 406 | |
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| 407 | bool StringView::extractName(std::string & out) { |
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| 408 | size_t len; |
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| 409 | if (! extractNumber(len)) return false; |
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[efa8b6a] | 410 | if (idx+len > str.size()) return false; |
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[c20fafd] | 411 | out = str.substr(idx, len); |
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| 412 | idx += len; |
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[efa8b6a] | 413 | PRINT( std::cerr << "extractName success: " << out << std::endl; ) |
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[c20fafd] | 414 | return true; |
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| 415 | } |
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| 416 | |
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| 417 | bool StringView::isPrefix(const std::string & pref) { |
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| 418 | if ( pref.size() > str.size()-idx ) return false; |
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| 419 | auto its = std::mismatch( pref.begin(), pref.end(), std::next(str.begin(), idx) ); |
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| 420 | if (its.first == pref.end()) { |
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| 421 | idx += pref.size(); |
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| 422 | return true; |
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| 423 | } |
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| 424 | return false; |
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| 425 | } |
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| 426 | |
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[d1e0979] | 427 | // 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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[c20fafd] | 428 | bool StringView::stripMangleName(std::string & name) { |
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| 429 | PRINT( std::cerr << "====== " << str.size() << " " << str << std::endl; ) |
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| 430 | if (str.size() < 2+Encoding::manglePrefix.size()) return false; // +2 for at least _1 suffix |
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| 431 | if (! isPrefix(Encoding::manglePrefix) || ! isdigit(str.back())) return false; |
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[d1e0979] | 432 | |
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[c20fafd] | 433 | // get name |
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| 434 | if (! extractName(name)) return false; |
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[d1e0979] | 435 | |
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| 436 | // find bounds for type |
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[c20fafd] | 437 | PRINT( std::cerr << idx << " " << str.size() << std::endl; ) |
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[d1e0979] | 438 | PRINT( std::cerr << "["); |
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[c20fafd] | 439 | while (isdigit(str.back())) { |
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[d1e0979] | 440 | PRINT(std::cerr << "."); |
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[c20fafd] | 441 | str.pop_back(); |
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| 442 | if (str.size() <= idx) return false; |
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[d1e0979] | 443 | } |
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| 444 | PRINT( std::cerr << "]" << std::endl ); |
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[c20fafd] | 445 | if (str.back() != '_') return false; |
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| 446 | str.pop_back(); |
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| 447 | PRINT( std::cerr << str.size() << " " << name << " " << str.substr(idx) << std::endl; ) |
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| 448 | return str.size() > idx; |
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| 449 | } |
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[d1e0979] | 450 | |
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[c20fafd] | 451 | Type * StringView::parseFunction(Type::Qualifiers tq) { |
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| 452 | PRINT( std::cerr << "function..." << std::endl; ) |
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| 453 | if (done()) return nullptr; |
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| 454 | FunctionType * ftype = new FunctionType( tq, false ); |
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[d7d63e5] | 455 | std::unique_ptr<Type> manager(ftype); |
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[c20fafd] | 456 | Type * retVal = parseType(); |
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| 457 | if (! retVal) return nullptr; |
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| 458 | PRINT( std::cerr << "with return type: " << retVal << std::endl; ) |
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| 459 | ftype->returnVals.push_back(ObjectDecl::newObject("", retVal, nullptr)); |
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| 460 | if (done() || ! expect('_')) return nullptr; |
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| 461 | while (! done()) { |
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| 462 | PRINT( std::cerr << "got ch: " << cur() << std::endl; ) |
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[d7d63e5] | 463 | if (cur() == '_') return manager.release(); |
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[c20fafd] | 464 | Type * param = parseType(); |
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| 465 | if (! param) return nullptr; |
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| 466 | PRINT( std::cerr << "with parameter : " << param << std::endl; ) |
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| 467 | ftype->parameters.push_back(ObjectDecl::newObject("", param, nullptr)); |
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| 468 | } |
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| 469 | return nullptr; |
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[d1e0979] | 470 | } |
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| 471 | |
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[c20fafd] | 472 | Type * StringView::parseTuple(Type::Qualifiers tq) { |
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| 473 | PRINT( std::cerr << "tuple..." << std::endl; ) |
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| 474 | std::list< Type * > types; |
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| 475 | size_t ncomponents; |
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| 476 | if (! extractNumber(ncomponents)) return nullptr; |
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| 477 | for (size_t i = 0; i < ncomponents; ++i) { |
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[d7d63e5] | 478 | // TODO: delete all on return |
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[c20fafd] | 479 | if (done()) return nullptr; |
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| 480 | PRINT( std::cerr << "got ch: " << cur() << std::endl; ) |
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| 481 | Type * t = parseType(); |
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| 482 | if (! t) return nullptr; |
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| 483 | PRINT( std::cerr << "with type : " << t << std::endl; ) |
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| 484 | types.push_back(t); |
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| 485 | } |
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| 486 | return new TupleType( tq, types ); |
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[d1e0979] | 487 | } |
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| 488 | |
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[c20fafd] | 489 | Type * StringView::parseVoid(Type::Qualifiers tq) { |
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| 490 | return new VoidType( tq ); |
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| 491 | } |
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| 492 | |
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| 493 | Type * StringView::parsePointer(Type::Qualifiers tq) { |
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| 494 | PRINT( std::cerr << "pointer..." << std::endl; ) |
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| 495 | Type * t = parseType(); |
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| 496 | if (! t) return nullptr; |
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| 497 | return new PointerType( tq, t ); |
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| 498 | } |
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| 499 | |
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[2f9768f] | 500 | Type * StringView::parseArray(Type::Qualifiers tq) { |
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| 501 | PRINT( std::cerr << "array..." << std::endl; ) |
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| 502 | size_t length; |
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| 503 | if (! extractNumber(length)) return nullptr; |
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| 504 | Type * t = parseType(); |
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| 505 | if (! t) return nullptr; |
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| 506 | return new ArrayType( tq, t, new ConstantExpr( Constant::from_ulong(length) ), false, false ); |
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| 507 | } |
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| 508 | |
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[c20fafd] | 509 | Type * StringView::parseStruct(Type::Qualifiers tq) { |
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| 510 | PRINT( std::cerr << "struct..." << std::endl; ) |
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| 511 | std::string name; |
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| 512 | if (! extractName(name)) return nullptr; |
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| 513 | return new StructInstType(tq, name); |
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| 514 | } |
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| 515 | |
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[38587bc] | 516 | Type * StringView::parseUnion(Type::Qualifiers tq) { |
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| 517 | PRINT( std::cerr << "union..." << std::endl; ) |
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| 518 | std::string name; |
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| 519 | if (! extractName(name)) return nullptr; |
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| 520 | return new UnionInstType(tq, name); |
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| 521 | } |
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| 522 | |
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| 523 | Type * StringView::parseEnum(Type::Qualifiers tq) { |
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| 524 | PRINT( std::cerr << "enum..." << std::endl; ) |
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| 525 | std::string name; |
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| 526 | if (! extractName(name)) return nullptr; |
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| 527 | return new EnumInstType(tq, name); |
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| 528 | } |
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| 529 | |
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[efa8b6a] | 530 | Type * StringView::parseType(Type::Qualifiers tq) { |
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| 531 | PRINT( std::cerr << "type..." << std::endl; ) |
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| 532 | std::string name; |
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| 533 | if (! extractName(name)) return nullptr; |
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| 534 | PRINT( std::cerr << "typename..." << name << std::endl; ) |
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| 535 | return new TypeInstType(tq, name, false); |
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| 536 | } |
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| 537 | |
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[c20fafd] | 538 | Type * StringView::parseType() { |
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| 539 | if (done()) return nullptr; |
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[d1e0979] | 540 | |
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[04c77791] | 541 | std::list<TypeDecl *> forall; |
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| 542 | if (isPrefix(Encoding::forall)) { |
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| 543 | PRINT( std::cerr << "polymorphic with..." << std::endl; ) |
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| 544 | size_t dcount, fcount, vcount, acount; |
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| 545 | if (! extractNumber(dcount)) return nullptr; |
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| 546 | PRINT( std::cerr << dcount << " dtypes" << std::endl; ) |
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| 547 | if (! expect('_')) return nullptr; |
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| 548 | if (! extractNumber(fcount)) return nullptr; |
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| 549 | PRINT( std::cerr << fcount << " ftypes" << std::endl; ) |
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| 550 | if (! expect('_')) return nullptr; |
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| 551 | if (! extractNumber(vcount)) return nullptr; |
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| 552 | PRINT( std::cerr << vcount << " ttypes" << std::endl; ) |
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| 553 | if (! expect('_')) return nullptr; |
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| 554 | if (! extractNumber(acount)) return nullptr; |
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| 555 | PRINT( std::cerr << acount << " assertions" << std::endl; ) |
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| 556 | if (! expect('_')) return nullptr; |
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[550e819] | 557 | for (size_t i = 0; i < acount; ++i) { |
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| 558 | // TODO: need to recursively parse assertions, but for now just return nullptr so that |
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| 559 | // demangler does not crash if there are assertions |
---|
| 560 | return nullptr; |
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| 561 | } |
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[04c77791] | 562 | if (! expect('_')) return nullptr; |
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| 563 | } |
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| 564 | |
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[d1e0979] | 565 | // qualifiers |
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| 566 | Type::Qualifiers tq; |
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| 567 | while (true) { |
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[c20fafd] | 568 | auto qual = std::find_if(Encoding::qualifiers.begin(), Encoding::qualifiers.end(), [this](decltype(Encoding::qualifiers)::value_type val) { |
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| 569 | return isPrefix(val.second); |
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[d1e0979] | 570 | }); |
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[c20fafd] | 571 | if (qual == Encoding::qualifiers.end()) break; |
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[d1e0979] | 572 | tq |= qual->first; |
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| 573 | } |
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| 574 | |
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[c20fafd] | 575 | // find the correct type parser and use it |
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| 576 | auto iter = std::find_if(parsers.begin(), parsers.end(), [this](std::pair<std::string, parser> & p) { |
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| 577 | return isPrefix(p.first); |
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[d1e0979] | 578 | }); |
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[c20fafd] | 579 | assertf(iter != parsers.end(), "Unhandled type letter: %c at index: %zd", cur(), idx); |
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[04c77791] | 580 | Type * ret = iter->second(tq); |
---|
| 581 | if (! ret) return nullptr; |
---|
| 582 | ret->forall = std::move(forall); |
---|
| 583 | return ret; |
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[d1e0979] | 584 | } |
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| 585 | |
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[c20fafd] | 586 | bool StringView::parse(std::string & name, Type *& type) { |
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| 587 | if (! stripMangleName(name)) return false; |
---|
| 588 | PRINT( std::cerr << "stripped name: " << name << std::endl; ) |
---|
| 589 | Type * t = parseType(); |
---|
| 590 | if (! t) return false; |
---|
| 591 | type = t; |
---|
| 592 | return true; |
---|
[d1e0979] | 593 | } |
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[f47d0ad] | 594 | |
---|
| 595 | std::string demangle(const std::string & mangleName) { |
---|
| 596 | SymTab::Mangler::StringView view(mangleName); |
---|
| 597 | std::string name; |
---|
| 598 | Type * type = nullptr; |
---|
| 599 | if (! view.parse(name, type)) return mangleName; |
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[d7d63e5] | 600 | std::unique_ptr<Type> manager(type); |
---|
[f47d0ad] | 601 | return genDemangleType(type, name); |
---|
| 602 | } |
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[d1e0979] | 603 | } // namespace |
---|
| 604 | } // namespace Mangler |
---|
| 605 | } // namespace SymTab |
---|
| 606 | |
---|
| 607 | extern "C" { |
---|
[90cac45] | 608 | char * cforall_demangle(const char * mangleName, int option __attribute__((unused))) { |
---|
[f47d0ad] | 609 | const std::string & demangleName = SymTab::Mangler::demangle(mangleName); |
---|
| 610 | return strdup(demangleName.c_str()); |
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| 611 | } |
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[d1e0979] | 612 | } |
---|
| 613 | |
---|
| 614 | // Local Variables: // |
---|
| 615 | // tab-width: 4 // |
---|
| 616 | // mode: c++ // |
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| 617 | // compile-command: "make install" // |
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| 618 | // End: // |
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