[51b7345] | 1 | /* |
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| 2 | * This file is part of the Cforall project |
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| 3 | * |
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| 4 | * $Id: TypeSubstitution.cc,v 1.9 2005/08/29 20:59:26 rcbilson Exp $ |
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| 5 | * |
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| 6 | */ |
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| 7 | |
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| 8 | #include "Type.h" |
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| 9 | #include "TypeSubstitution.h" |
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| 10 | |
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| 11 | |
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| 12 | TypeSubstitution::TypeSubstitution() |
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| 13 | { |
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| 14 | } |
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| 15 | |
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| 16 | TypeSubstitution::TypeSubstitution( const TypeSubstitution &other ) |
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| 17 | { |
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| 18 | initialize( other, *this ); |
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| 19 | } |
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| 20 | |
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| 21 | TypeSubstitution::~TypeSubstitution() |
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| 22 | { |
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| 23 | for( TypeEnvType::iterator i = typeEnv.begin(); i != typeEnv.end(); ++i ) { |
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| 24 | delete( i->second ); |
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| 25 | } |
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| 26 | for( VarEnvType::iterator i = varEnv.begin(); i != varEnv.end(); ++i ) { |
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| 27 | delete( i->second ); |
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| 28 | } |
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| 29 | } |
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| 30 | |
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| 31 | TypeSubstitution & |
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| 32 | TypeSubstitution::operator=( const TypeSubstitution &other ) |
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| 33 | { |
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| 34 | if( this == &other ) return *this; |
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| 35 | initialize( other, *this ); |
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| 36 | return *this; |
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| 37 | } |
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| 38 | |
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| 39 | void |
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| 40 | TypeSubstitution::initialize( const TypeSubstitution &src, TypeSubstitution &dest ) |
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| 41 | { |
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| 42 | dest.typeEnv.clear(); |
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| 43 | dest.varEnv.clear(); |
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| 44 | dest.add( src ); |
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| 45 | } |
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| 46 | |
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| 47 | void |
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| 48 | TypeSubstitution::add( const TypeSubstitution &other ) |
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| 49 | { |
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| 50 | for( TypeEnvType::const_iterator i = other.typeEnv.begin(); i != other.typeEnv.end(); ++i ) { |
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| 51 | typeEnv[ i->first ] = i->second->clone(); |
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| 52 | } |
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| 53 | for( VarEnvType::const_iterator i = other.varEnv.begin(); i != other.varEnv.end(); ++i ) { |
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| 54 | varEnv[ i->first ] = i->second->clone(); |
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| 55 | } |
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| 56 | } |
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| 57 | |
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| 58 | void |
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| 59 | TypeSubstitution::add( std::string formalType, Type *actualType ) |
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| 60 | { |
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| 61 | TypeEnvType::iterator i = typeEnv.find( formalType ); |
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| 62 | if( i != typeEnv.end() ) { |
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| 63 | delete i->second; |
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| 64 | } |
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| 65 | typeEnv[ formalType ] = actualType->clone(); |
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| 66 | } |
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| 67 | |
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| 68 | void |
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| 69 | TypeSubstitution::remove( std::string formalType ) |
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| 70 | { |
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| 71 | TypeEnvType::iterator i = typeEnv.find( formalType ); |
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| 72 | if( i != typeEnv.end() ) { |
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| 73 | delete i->second; |
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| 74 | typeEnv.erase( formalType ); |
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| 75 | } |
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| 76 | } |
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| 77 | |
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| 78 | Type * |
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| 79 | TypeSubstitution::lookup( std::string formalType ) const |
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| 80 | { |
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| 81 | TypeEnvType::const_iterator i = typeEnv.find( formalType ); |
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| 82 | if( i == typeEnv.end() ) { |
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| 83 | return 0; |
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| 84 | } else { |
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| 85 | return i->second; |
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| 86 | } |
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| 87 | } |
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| 88 | |
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| 89 | bool |
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| 90 | TypeSubstitution::empty() const |
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| 91 | { |
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| 92 | return typeEnv.empty() && varEnv.empty(); |
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| 93 | } |
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| 94 | |
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| 95 | void |
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| 96 | TypeSubstitution::normalize() |
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| 97 | { |
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| 98 | do { |
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| 99 | subCount = 0; |
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| 100 | freeOnly = true; |
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| 101 | for( TypeEnvType::iterator i = typeEnv.begin(); i != typeEnv.end(); ++i ) { |
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| 102 | i->second = i->second->acceptMutator( *this ); |
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| 103 | } |
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| 104 | } while( subCount ); |
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| 105 | } |
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| 106 | |
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| 107 | Type* |
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| 108 | TypeSubstitution::mutate(TypeInstType *inst) |
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| 109 | { |
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| 110 | BoundVarsType::const_iterator bound = boundVars.find( inst->get_name() ); |
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| 111 | if( bound != boundVars.end() ) return inst; |
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| 112 | |
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| 113 | TypeEnvType::const_iterator i = typeEnv.find( inst->get_name() ); |
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| 114 | if( i == typeEnv.end() ) { |
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| 115 | return inst; |
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| 116 | } else { |
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| 117 | /// std::cout << "found " << inst->get_name() << ", replacing with "; |
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| 118 | /// i->second->print( std::cout ); |
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| 119 | /// std::cout << std::endl; |
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| 120 | subCount++; |
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| 121 | Type *newtype = i->second->clone(); |
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| 122 | newtype->get_qualifiers() += inst->get_qualifiers(); |
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| 123 | delete inst; |
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| 124 | return newtype; |
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| 125 | } |
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| 126 | } |
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| 127 | |
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| 128 | Expression* |
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| 129 | TypeSubstitution::mutate(NameExpr *nameExpr) |
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| 130 | { |
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| 131 | VarEnvType::const_iterator i = varEnv.find( nameExpr->get_name() ); |
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| 132 | if( i == varEnv.end() ) { |
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| 133 | return nameExpr; |
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| 134 | } else { |
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| 135 | subCount++; |
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| 136 | delete nameExpr; |
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| 137 | return i->second->clone(); |
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| 138 | } |
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| 139 | } |
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| 140 | |
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| 141 | template< typename TypeClass > |
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| 142 | Type * |
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| 143 | TypeSubstitution::handleType( TypeClass *type ) |
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| 144 | { |
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| 145 | BoundVarsType oldBoundVars( boundVars ); |
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| 146 | if( freeOnly ) { |
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| 147 | for( std::list< TypeDecl* >::const_iterator tyvar = type->get_forall().begin(); tyvar != type->get_forall().end(); ++tyvar ) { |
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| 148 | boundVars.insert( (*tyvar)->get_name() ); |
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| 149 | } |
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| 150 | } |
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| 151 | Type *ret = Mutator::mutate( type ); |
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| 152 | boundVars = oldBoundVars; |
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| 153 | return ret; |
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| 154 | } |
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| 155 | |
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| 156 | Type* |
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| 157 | TypeSubstitution::mutate(VoidType *basicType) |
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| 158 | { |
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| 159 | return handleType( basicType ); |
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| 160 | } |
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| 161 | |
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| 162 | Type* |
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| 163 | TypeSubstitution::mutate(BasicType *basicType) |
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| 164 | { |
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| 165 | return handleType( basicType ); |
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| 166 | } |
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| 167 | |
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| 168 | Type* |
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| 169 | TypeSubstitution::mutate(PointerType *pointerType) |
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| 170 | { |
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| 171 | return handleType( pointerType ); |
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| 172 | } |
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| 173 | |
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| 174 | Type* |
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| 175 | TypeSubstitution::mutate(ArrayType *arrayType) |
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| 176 | { |
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| 177 | return handleType( arrayType ); |
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| 178 | } |
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| 179 | |
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| 180 | Type* |
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| 181 | TypeSubstitution::mutate(FunctionType *functionType) |
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| 182 | { |
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| 183 | return handleType( functionType ); |
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| 184 | } |
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| 185 | |
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| 186 | Type* |
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| 187 | TypeSubstitution::mutate(StructInstType *aggregateUseType) |
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| 188 | { |
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| 189 | return handleType( aggregateUseType ); |
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| 190 | } |
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| 191 | |
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| 192 | Type* |
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| 193 | TypeSubstitution::mutate(UnionInstType *aggregateUseType) |
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| 194 | { |
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| 195 | return handleType( aggregateUseType ); |
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| 196 | } |
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| 197 | |
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| 198 | Type* |
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| 199 | TypeSubstitution::mutate(EnumInstType *aggregateUseType) |
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| 200 | { |
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| 201 | return handleType( aggregateUseType ); |
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| 202 | } |
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| 203 | |
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| 204 | Type* |
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| 205 | TypeSubstitution::mutate(ContextInstType *aggregateUseType) |
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| 206 | { |
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| 207 | return handleType( aggregateUseType ); |
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| 208 | } |
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| 209 | |
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| 210 | Type* |
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| 211 | TypeSubstitution::mutate(TupleType *tupleType) |
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| 212 | { |
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| 213 | return handleType( tupleType ); |
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| 214 | } |
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| 215 | |
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| 216 | void |
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| 217 | TypeSubstitution::print( std::ostream &os, int indent ) const |
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| 218 | { |
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| 219 | os << std::string( indent, ' ' ) << "Types:" << std::endl; |
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| 220 | for( TypeEnvType::const_iterator i = typeEnv.begin(); i != typeEnv.end(); ++i ) { |
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| 221 | os << std::string( indent+2, ' ' ) << i->first << " -> "; |
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| 222 | i->second->print( os, indent+4 ); |
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| 223 | os << std::endl; |
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| 224 | } |
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| 225 | os << std::string( indent, ' ' ) << "Non-types:" << std::endl; |
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| 226 | for( VarEnvType::const_iterator i = varEnv.begin(); i != varEnv.end(); ++i ) { |
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| 227 | os << std::string( indent+2, ' ' ) << i->first << " -> "; |
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| 228 | i->second->print( os, indent+4 ); |
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| 229 | os << std::endl; |
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| 230 | } |
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| 231 | } |
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| 232 | |
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