| [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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|  | 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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| [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 | 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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| [c20fafd] | 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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| [2f9768f] | 352 | Type * parseArray(Type::Qualifiers tq); | 
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| [c20fafd] | 353 | Type * parseStruct(Type::Qualifiers tq); | 
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| [38587bc] | 354 | Type * parseUnion(Type::Qualifiers tq); | 
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|  | 355 | Type * parseEnum(Type::Qualifiers tq); | 
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| [efa8b6a] | 356 | Type * parseType(Type::Qualifiers tq); | 
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| [c20fafd] | 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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| [8316a49] | 365 | parsers.emplace_back(Encoding::basicTypes[k], [k](Type::Qualifiers tq) { | 
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| [c20fafd] | 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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| [04c77791] | 370 | // type variable types | 
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|  | 371 | for (size_t k = 0; k < TypeDecl::NUMBER_OF_KINDS; ++k) { | 
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| [550e819] | 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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| [04c77791] | 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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| [550e819] | 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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| [04c77791] | 382 | }); | 
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|  | 383 | } | 
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| [c20fafd] | 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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| [2f9768f] | 388 | parsers.emplace_back(Encoding::array, [this](Type::Qualifiers tq) { return parseArray(tq); }); | 
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| [c20fafd] | 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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| [38587bc] | 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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| [efa8b6a] | 393 | parsers.emplace_back(Encoding::type, [this](Type::Qualifiers tq) { return parseType(tq); }); | 
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| [56b53b2] | 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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| [c20fafd] | 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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| [efa8b6a] | 400 | if (idx >= str.size()) return false; | 
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| [c20fafd] | 401 | while (isdigit(str[idx])) { | 
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|  | 402 | numss << str[idx]; | 
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|  | 403 | ++idx; | 
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| [efa8b6a] | 404 | if (idx == str.size()) break; | 
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| [c20fafd] | 405 | } | 
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|  | 406 | if (! (numss >> out)) return false; | 
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| [efa8b6a] | 407 | PRINT( std::cerr << "extractNumber success: " << out << std::endl; ) | 
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| [c20fafd] | 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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| [efa8b6a] | 414 | if (idx+len > str.size()) return false; | 
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| [c20fafd] | 415 | out = str.substr(idx, len); | 
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|  | 416 | idx += len; | 
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| [efa8b6a] | 417 | PRINT( std::cerr << "extractName success: " << out << std::endl; ) | 
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| [c20fafd] | 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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| [d1e0979] | 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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| [c20fafd] | 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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| [d1e0979] | 436 |  | 
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| [c20fafd] | 437 | // get name | 
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|  | 438 | if (! extractName(name)) return false; | 
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| [d1e0979] | 439 |  | 
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|  | 440 | // find bounds for type | 
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| [c20fafd] | 441 | PRINT( std::cerr << idx << " " << str.size() << std::endl; ) | 
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| [d1e0979] | 442 | PRINT( std::cerr << "["); | 
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| [c20fafd] | 443 | while (isdigit(str.back())) { | 
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| [d1e0979] | 444 | PRINT(std::cerr << "."); | 
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| [c20fafd] | 445 | str.pop_back(); | 
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|  | 446 | if (str.size() <= idx) return false; | 
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| [d1e0979] | 447 | } | 
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|  | 448 | PRINT( std::cerr << "]" << std::endl ); | 
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| [c20fafd] | 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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| [d1e0979] | 454 |  | 
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| [c20fafd] | 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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| [d7d63e5] | 459 | std::unique_ptr<Type> manager(ftype); | 
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| [c20fafd] | 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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| [d7d63e5] | 467 | if (cur() == '_') return manager.release(); | 
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| [c20fafd] | 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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| [d1e0979] | 474 | } | 
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|  | 475 |  | 
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| [c20fafd] | 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; | 
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|  | 481 | for (size_t i = 0; i < ncomponents; ++i) { | 
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| [d7d63e5] | 482 | // TODO: delete all on return | 
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| [c20fafd] | 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(); | 
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|  | 486 | if (! t) return nullptr; | 
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|  | 487 | PRINT( std::cerr << "with type : " << t << std::endl; ) | 
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|  | 488 | types.push_back(t); | 
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|  | 489 | } | 
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|  | 490 | return new TupleType( tq, types ); | 
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| [d1e0979] | 491 | } | 
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|  | 492 |  | 
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| [c20fafd] | 493 | Type * StringView::parseVoid(Type::Qualifiers tq) { | 
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|  | 494 | return new VoidType( tq ); | 
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|  | 495 | } | 
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|  | 496 |  | 
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|  | 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(); | 
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|  | 500 | if (! t) return nullptr; | 
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|  | 501 | return new PointerType( tq, t ); | 
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|  | 502 | } | 
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|  | 503 |  | 
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| [2f9768f] | 504 | Type * StringView::parseArray(Type::Qualifiers tq) { | 
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|  | 505 | PRINT( std::cerr << "array..." << std::endl; ) | 
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|  | 506 | size_t length; | 
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|  | 507 | if (! extractNumber(length)) return nullptr; | 
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|  | 508 | Type * t = parseType(); | 
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|  | 509 | if (! t) return nullptr; | 
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|  | 510 | return new ArrayType( tq, t, new ConstantExpr( Constant::from_ulong(length) ), false, false ); | 
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|  | 511 | } | 
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|  | 512 |  | 
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| [c20fafd] | 513 | Type * StringView::parseStruct(Type::Qualifiers tq) { | 
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|  | 514 | PRINT( std::cerr << "struct..." << std::endl; ) | 
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|  | 515 | std::string name; | 
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|  | 516 | if (! extractName(name)) return nullptr; | 
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|  | 517 | return new StructInstType(tq, name); | 
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|  | 518 | } | 
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|  | 519 |  | 
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| [38587bc] | 520 | Type * StringView::parseUnion(Type::Qualifiers tq) { | 
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|  | 521 | PRINT( std::cerr << "union..." << std::endl; ) | 
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|  | 522 | std::string name; | 
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|  | 523 | if (! extractName(name)) return nullptr; | 
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|  | 524 | return new UnionInstType(tq, name); | 
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|  | 525 | } | 
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|  | 526 |  | 
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|  | 527 | Type * StringView::parseEnum(Type::Qualifiers tq) { | 
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|  | 528 | PRINT( std::cerr << "enum..." << std::endl; ) | 
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|  | 529 | std::string name; | 
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|  | 530 | if (! extractName(name)) return nullptr; | 
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|  | 531 | return new EnumInstType(tq, name); | 
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|  | 532 | } | 
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|  | 533 |  | 
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| [efa8b6a] | 534 | Type * StringView::parseType(Type::Qualifiers tq) { | 
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|  | 535 | PRINT( std::cerr << "type..." << std::endl; ) | 
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|  | 536 | std::string name; | 
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|  | 537 | if (! extractName(name)) return nullptr; | 
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|  | 538 | PRINT( std::cerr << "typename..." << name << std::endl; ) | 
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|  | 539 | return new TypeInstType(tq, name, false); | 
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|  | 540 | } | 
|---|
|  | 541 |  | 
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| [c20fafd] | 542 | Type * StringView::parseType() { | 
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|  | 543 | if (done()) return nullptr; | 
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| [d1e0979] | 544 |  | 
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| [04c77791] | 545 | std::list<TypeDecl *> forall; | 
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|  | 546 | if (isPrefix(Encoding::forall)) { | 
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|  | 547 | PRINT( std::cerr << "polymorphic with..." << std::endl; ) | 
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|  | 548 | size_t dcount, fcount, vcount, acount; | 
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|  | 549 | if (! extractNumber(dcount)) return nullptr; | 
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|  | 550 | PRINT( std::cerr << dcount << " dtypes" << std::endl; ) | 
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|  | 551 | if (! expect('_')) return nullptr; | 
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|  | 552 | if (! extractNumber(fcount)) return nullptr; | 
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|  | 553 | PRINT( std::cerr << fcount << " ftypes" << std::endl; ) | 
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|  | 554 | if (! expect('_')) return nullptr; | 
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|  | 555 | if (! extractNumber(vcount)) return nullptr; | 
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|  | 556 | PRINT( std::cerr << vcount << " ttypes" << std::endl; ) | 
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|  | 557 | if (! expect('_')) return nullptr; | 
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|  | 558 | if (! extractNumber(acount)) return nullptr; | 
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|  | 559 | PRINT( std::cerr << acount << " assertions" << std::endl; ) | 
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|  | 560 | if (! expect('_')) return nullptr; | 
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| [550e819] | 561 | for (size_t i = 0; i < acount; ++i) { | 
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|  | 562 | // TODO: need to recursively parse assertions, but for now just return nullptr so that | 
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|  | 563 | // demangler does not crash if there are assertions | 
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|  | 564 | return nullptr; | 
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|  | 565 | } | 
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| [04c77791] | 566 | if (! expect('_')) return nullptr; | 
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|  | 567 | } | 
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|  | 568 |  | 
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| [d1e0979] | 569 | // qualifiers | 
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|  | 570 | Type::Qualifiers tq; | 
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|  | 571 | while (true) { | 
|---|
| [c20fafd] | 572 | auto qual = std::find_if(Encoding::qualifiers.begin(), Encoding::qualifiers.end(), [this](decltype(Encoding::qualifiers)::value_type val) { | 
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|  | 573 | return isPrefix(val.second); | 
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| [d1e0979] | 574 | }); | 
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| [c20fafd] | 575 | if (qual == Encoding::qualifiers.end()) break; | 
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| [d1e0979] | 576 | tq |= qual->first; | 
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|  | 577 | } | 
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|  | 578 |  | 
|---|
| [c20fafd] | 579 | // find the correct type parser and use it | 
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|  | 580 | auto iter = std::find_if(parsers.begin(), parsers.end(), [this](std::pair<std::string, parser> & p) { | 
|---|
|  | 581 | return isPrefix(p.first); | 
|---|
| [d1e0979] | 582 | }); | 
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| [c20fafd] | 583 | assertf(iter != parsers.end(), "Unhandled type letter: %c at index: %zd", cur(), idx); | 
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| [04c77791] | 584 | Type * ret = iter->second(tq); | 
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|  | 585 | if (! ret) return nullptr; | 
|---|
|  | 586 | ret->forall = std::move(forall); | 
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|  | 587 | return ret; | 
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| [d1e0979] | 588 | } | 
|---|
|  | 589 |  | 
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| [c20fafd] | 590 | bool StringView::parse(std::string & name, Type *& type) { | 
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|  | 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; | 
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| [d1e0979] | 597 | } | 
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| [f47d0ad] | 598 |  | 
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|  | 599 | std::string demangle(const std::string & mangleName) { | 
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|  | 600 | SymTab::Mangler::StringView view(mangleName); | 
|---|
|  | 601 | std::string name; | 
|---|
|  | 602 | Type * type = nullptr; | 
|---|
|  | 603 | if (! view.parse(name, type)) return mangleName; | 
|---|
| [d7d63e5] | 604 | std::unique_ptr<Type> manager(type); | 
|---|
| [f47d0ad] | 605 | return genDemangleType(type, name); | 
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|  | 606 | } | 
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| [d1e0979] | 607 | } // namespace | 
|---|
|  | 608 | } // namespace Mangler | 
|---|
|  | 609 | } // namespace SymTab | 
|---|
|  | 610 |  | 
|---|
|  | 611 | extern "C" { | 
|---|
| [90cac45] | 612 | char * cforall_demangle(const char * mangleName, int option __attribute__((unused))) { | 
|---|
| [f47d0ad] | 613 | const std::string & demangleName = SymTab::Mangler::demangle(mangleName); | 
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|  | 614 | return strdup(demangleName.c_str()); | 
|---|
|  | 615 | } | 
|---|
| [d1e0979] | 616 | } | 
|---|
|  | 617 |  | 
|---|
|  | 618 | // Local Variables: // | 
|---|
|  | 619 | // tab-width: 4 // | 
|---|
|  | 620 | // mode: c++ // | 
|---|
|  | 621 | // compile-command: "make install" // | 
|---|
|  | 622 | // End: // | 
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