[0c730d9] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2016 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 | // ExceptDecl.cc -- |
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| 8 | // |
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| 9 | // Author : Henry Xue |
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| 10 | // Created On : Tue Jul 20 04:10:50 2021 |
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| 11 | // Last Modified By : Henry Xue |
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| 12 | // Last Modified On : Tue Jul 20 04:10:50 2021 |
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| 13 | // Update Count : 1 |
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| 14 | // |
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| 15 | |
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| 16 | #include "ExceptDecl.h" |
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| 17 | |
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| 18 | #include "Common/PassVisitor.h" // for PassVisitor |
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| 19 | #include "SynTree/Mutator.h" // for mutateAll |
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| 20 | #include "Virtual/Tables.h" // for helpers |
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| 21 | |
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| 22 | namespace ControlStruct { |
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| 23 | |
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| 24 | StructDecl * ehmTypeIdStruct( const std::string & exceptionName, std::list< TypeDecl *> * parameters ) { |
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| 25 | StructDecl * structDecl = new StructDecl( Virtual::typeIdType( exceptionName ) ); |
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| 26 | structDecl->members.push_back( new ObjectDecl( |
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| 27 | "parent", |
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| 28 | noStorageClasses, |
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| 29 | LinkageSpec::Cforall, |
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| 30 | nullptr, |
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| 31 | new PointerType( noQualifiers, |
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| 32 | new TypeInstType( Type::Const, "__cfavir_type_info", false ) ), |
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| 33 | nullptr |
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| 34 | ) ); |
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| 35 | structDecl->set_body( true ); |
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| 36 | if ( parameters ) { |
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| 37 | structDecl->parameters = *parameters; |
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| 38 | } |
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| 39 | return structDecl; |
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| 40 | } |
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| 41 | |
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| 42 | ObjectDecl * ehmTypeIdValue( const std::string & exceptionName, std::list< Expression *> * parameters ) { |
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| 43 | StructInstType * structInstType = new StructInstType( Type::Const, Virtual::typeIdType( exceptionName ) ); |
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| 44 | if ( parameters ) { |
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| 45 | structInstType->parameters = *parameters; |
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| 46 | } |
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| 47 | return new ObjectDecl( |
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| 48 | Virtual::typeIdName( exceptionName ), |
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| 49 | noStorageClasses, |
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| 50 | LinkageSpec::Cforall, |
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| 51 | nullptr, |
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| 52 | structInstType, |
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| 53 | new ListInit( { new SingleInit( |
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| 54 | new AddressExpr( new NameExpr( "__cfatid_exception_t" ) ) |
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| 55 | ) }, {}, true ), |
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| 56 | { new Attribute( "cfa_linkonce" ) } |
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| 57 | ); |
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| 58 | } |
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| 59 | |
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| 60 | StructDecl * ehmExceptionStructDecl( const std::string & exceptionName, std::list< TypeDecl *> * parameters ) { |
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| 61 | StructDecl * structDecl = new StructDecl( exceptionName ); |
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| 62 | if ( parameters ) { |
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| 63 | structDecl->parameters = *parameters; |
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| 64 | } |
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| 65 | return structDecl; |
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| 66 | } |
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| 67 | |
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| 68 | StructDecl * ehmVirtualTableStruct( const std::string & exceptionName, std::list< TypeDecl *> * parameters ) { |
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| 69 | // _EHM_TYPE_ID_TYPE(exception_name) parameters const * __cfavir_typeid; |
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| 70 | ObjectDecl * typeId = new ObjectDecl( |
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| 71 | "__cfavir_typeid", |
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| 72 | noStorageClasses, |
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| 73 | LinkageSpec::Cforall, |
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| 74 | nullptr, |
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| 75 | new PointerType( noQualifiers, |
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| 76 | new StructInstType( Type::Const, Virtual::typeIdType( exceptionName ) ) ), |
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| 77 | nullptr |
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| 78 | ); |
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| 79 | |
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| 80 | // size_t size; |
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| 81 | ObjectDecl * size = new ObjectDecl( |
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| 82 | "size", |
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| 83 | noStorageClasses, |
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| 84 | LinkageSpec::Cforall, |
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| 85 | nullptr, |
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| 86 | new TypeInstType( noQualifiers, "size_t", false ), |
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| 87 | nullptr |
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| 88 | ); |
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| 89 | |
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| 90 | // void (*copy)(exception_name parameters * this, exception_name parameters * other); |
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| 91 | FunctionType * copyFnType = new FunctionType( noQualifiers, false ); |
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| 92 | copyFnType->get_parameters().push_back( new ObjectDecl( |
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| 93 | "this", |
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| 94 | noStorageClasses, |
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| 95 | LinkageSpec::Cforall, |
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| 96 | nullptr, |
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| 97 | new PointerType( noQualifiers, |
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| 98 | new TypeInstType( noQualifiers, exceptionName, false ) ), |
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| 99 | nullptr |
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| 100 | ) ); |
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| 101 | copyFnType->get_parameters().push_back( new ObjectDecl( |
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| 102 | "other", |
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| 103 | noStorageClasses, |
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| 104 | LinkageSpec::Cforall, |
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| 105 | nullptr, |
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| 106 | new PointerType( noQualifiers, |
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| 107 | new TypeInstType( noQualifiers, exceptionName, false ) ), |
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| 108 | nullptr |
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| 109 | ) ); |
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| 110 | copyFnType->get_returnVals().push_back( new ObjectDecl( |
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| 111 | "", |
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| 112 | noStorageClasses, |
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| 113 | LinkageSpec::Cforall, |
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| 114 | nullptr, |
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| 115 | new VoidType( noQualifiers ), |
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| 116 | nullptr |
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| 117 | ) ); |
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| 118 | ObjectDecl * copy = new ObjectDecl( |
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| 119 | "copy", |
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| 120 | noStorageClasses, |
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| 121 | LinkageSpec::Cforall, |
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| 122 | nullptr, |
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| 123 | new PointerType( noQualifiers, copyFnType ), |
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| 124 | nullptr |
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| 125 | ); |
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| 126 | |
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| 127 | // void (*^?{})(exception_name parameters & this); |
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| 128 | FunctionType * dtorFnType = new FunctionType( noQualifiers, false ); |
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| 129 | dtorFnType->get_parameters().push_back( new ObjectDecl( |
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| 130 | "this", |
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| 131 | noStorageClasses, |
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| 132 | LinkageSpec::Cforall, |
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| 133 | nullptr, |
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| 134 | new ReferenceType( noQualifiers, |
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| 135 | new TypeInstType( noQualifiers, exceptionName, false ) ), |
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| 136 | nullptr |
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| 137 | ) ); |
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| 138 | dtorFnType->get_returnVals().push_back( new ObjectDecl( |
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| 139 | "", |
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| 140 | noStorageClasses, |
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| 141 | LinkageSpec::Cforall, |
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| 142 | nullptr, |
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| 143 | new VoidType( noQualifiers ), |
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| 144 | nullptr |
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| 145 | ) ); |
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| 146 | ObjectDecl * dtor = new ObjectDecl( |
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| 147 | "^?{}", |
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| 148 | noStorageClasses, |
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| 149 | LinkageSpec::Cforall, |
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| 150 | nullptr, |
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| 151 | new PointerType( noQualifiers, dtorFnType ), |
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| 152 | nullptr |
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| 153 | ); |
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| 154 | |
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| 155 | // const char * (*msg)(exception_name parameters * this); |
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| 156 | FunctionType * msgFnType = new FunctionType( noQualifiers, false ); |
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| 157 | msgFnType->get_parameters().push_back( new ObjectDecl( |
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| 158 | "this", |
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| 159 | noStorageClasses, |
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| 160 | LinkageSpec::Cforall, |
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| 161 | nullptr, |
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| 162 | new PointerType( noQualifiers, |
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| 163 | new TypeInstType( noQualifiers, exceptionName, false ) ), |
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| 164 | nullptr |
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| 165 | ) ); |
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| 166 | msgFnType->get_returnVals().push_back( new ObjectDecl( |
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| 167 | "", |
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| 168 | noStorageClasses, |
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| 169 | LinkageSpec::Cforall, |
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| 170 | nullptr, |
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| 171 | new PointerType( noQualifiers, new BasicType( Type::Const, BasicType::Char ) ), |
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| 172 | nullptr |
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| 173 | ) ); |
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| 174 | ObjectDecl * msg = new ObjectDecl( |
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| 175 | "msg", |
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| 176 | noStorageClasses, |
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| 177 | LinkageSpec::Cforall, |
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| 178 | nullptr, |
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| 179 | new PointerType( noQualifiers, msgFnType ), |
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| 180 | nullptr |
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| 181 | ); |
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| 182 | |
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| 183 | StructDecl * structDecl = new StructDecl( Virtual::vtableTypeName( exceptionName ) ); |
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| 184 | structDecl->members.push_back( typeId ); |
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| 185 | structDecl->members.push_back( size ); |
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| 186 | structDecl->members.push_back( copy ); |
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| 187 | structDecl->members.push_back( dtor ); |
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| 188 | structDecl->members.push_back( msg ); |
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| 189 | structDecl->set_body( true ); |
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| 190 | if ( parameters ) { |
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| 191 | structDecl->parameters = *parameters; |
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| 192 | } |
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| 193 | return structDecl; |
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| 194 | } |
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| 195 | |
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| 196 | StructDecl * ehmExceptionStruct( const std::string & exceptionName, const std::list<Declaration*> & members, |
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| 197 | std::list<TypeDecl *> * parameters ) { |
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| 198 | StructDecl * structDecl = new StructDecl( exceptionName ); |
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| 199 | structDecl->members = members; |
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| 200 | structDecl->members.push_front( new ObjectDecl( |
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| 201 | "virtual_table", |
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| 202 | noStorageClasses, |
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| 203 | LinkageSpec::Cforall, |
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| 204 | nullptr, |
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| 205 | new PointerType( noQualifiers, |
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| 206 | new StructInstType( Type::Const, Virtual::vtableTypeName( exceptionName ) ) ), |
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| 207 | nullptr |
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| 208 | ) ); |
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| 209 | structDecl->set_body( true ); |
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| 210 | if ( parameters ) { |
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| 211 | structDecl->parameters = *parameters; |
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| 212 | } |
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| 213 | return structDecl; |
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| 214 | } |
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| 215 | |
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| 216 | class ExceptDeclCore : public WithDeclsToAdd { |
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| 217 | public: |
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| 218 | Declaration * postmutate( StructDecl * structDecl ); |
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| 219 | }; |
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| 220 | |
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| 221 | Declaration * ExceptDeclCore::postmutate( StructDecl * structDecl ) { |
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| 222 | if ( structDecl->is_exception() ) { |
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| 223 | const std::string & exceptionName = structDecl->name; |
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| 224 | declsToAddBefore.push_back( ehmTypeIdStruct( exceptionName, nullptr ) ); |
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| 225 | declsToAddBefore.push_back( ehmTypeIdValue( exceptionName, nullptr ) ); |
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| 226 | declsToAddBefore.push_back( ehmExceptionStructDecl( exceptionName, nullptr ) ); |
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| 227 | declsToAddBefore.push_back( ehmVirtualTableStruct( exceptionName, nullptr ) ); |
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| 228 | return ehmExceptionStruct( exceptionName, structDecl->get_members(), nullptr ); |
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| 229 | } |
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| 230 | return structDecl; |
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| 231 | } |
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| 232 | |
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| 233 | void translateExcept( std::list< Declaration *> & translationUnit ) { |
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| 234 | PassVisitor<ExceptDeclCore> translator; |
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| 235 | mutateAll( translationUnit, translator ); |
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| 236 | } |
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| 237 | |
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| 238 | } |
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