1 //===--- Specifiers.h - Declaration and Type Specifiers ---------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file defines various enumerations that describe declaration and 11 // type specifiers. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_CLANG_BASIC_SPECIFIERS_H 16 #define LLVM_CLANG_BASIC_SPECIFIERS_H 17 18 namespace clang { 19 /// \brief Specifies the width of a type, e.g., short, long, or long long. 20 enum TypeSpecifierWidth { 21 TSW_unspecified, 22 TSW_short, 23 TSW_long, 24 TSW_longlong 25 }; 26 27 /// \brief Specifies the signedness of a type, e.g., signed or unsigned. 28 enum TypeSpecifierSign { 29 TSS_unspecified, 30 TSS_signed, 31 TSS_unsigned 32 }; 33 34 /// \brief Specifies the kind of type. 35 enum TypeSpecifierType { 36 TST_unspecified, 37 TST_void, 38 TST_char, 39 TST_wchar, // C++ wchar_t 40 TST_char16, // C++0x char16_t 41 TST_char32, // C++0x char32_t 42 TST_int, 43 TST_float, 44 TST_double, 45 TST_bool, // _Bool 46 TST_decimal32, // _Decimal32 47 TST_decimal64, // _Decimal64 48 TST_decimal128, // _Decimal128 49 TST_enum, 50 TST_union, 51 TST_struct, 52 TST_class, // C++ class type 53 TST_typename, // Typedef, C++ class-name or enum name, etc. 54 TST_typeofType, 55 TST_typeofExpr, 56 TST_decltype, // C++0x decltype 57 TST_underlyingType, // __underlying_type for C++0x 58 TST_auto, // C++0x auto 59 TST_unknown_anytype, // __unknown_anytype extension 60 TST_error // erroneous type 61 }; 62 63 /// WrittenBuiltinSpecs - Structure that packs information about the 64 /// type specifiers that were written in a particular type specifier 65 /// sequence. 66 struct WrittenBuiltinSpecs { 67 /*DeclSpec::TST*/ unsigned Type : 5; 68 /*DeclSpec::TSS*/ unsigned Sign : 2; 69 /*DeclSpec::TSW*/ unsigned Width : 2; 70 bool ModeAttr : 1; 71 }; 72 73 /// AccessSpecifier - A C++ access specifier (public, private, 74 /// protected), plus the special value "none" which means 75 /// different things in different contexts. 76 enum AccessSpecifier { 77 AS_public, 78 AS_protected, 79 AS_private, 80 AS_none 81 }; 82 83 /// ExprValueKind - The categorization of expression values, 84 /// currently following the C++0x scheme. 85 enum ExprValueKind { 86 /// An r-value expression (a pr-value in the C++0x taxonomy) 87 /// produces a temporary value. 88 VK_RValue, 89 90 /// An l-value expression is a reference to an object with 91 /// independent storage. 92 VK_LValue, 93 94 /// An x-value expression is a reference to an object with 95 /// independent storage but which can be "moved", i.e. 96 /// efficiently cannibalized for its resources. 97 VK_XValue 98 }; 99 100 /// A further classification of the kind of object referenced by an 101 /// l-value or x-value. 102 enum ExprObjectKind { 103 /// An ordinary object is located at an address in memory. 104 OK_Ordinary, 105 106 /// A bitfield object is a bitfield on a C or C++ record. 107 OK_BitField, 108 109 /// A vector component is an element or range of elements on a vector. 110 OK_VectorComponent, 111 112 /// An Objective C property is a logical field of an Objective-C 113 /// object which is read and written via Objective C method calls. 114 OK_ObjCProperty 115 }; 116 117 // \brief Describes the kind of template specialization that a 118 // particular template specialization declaration represents. 119 enum TemplateSpecializationKind { 120 /// This template specialization was formed from a template-id but 121 /// has not yet been declared, defined, or instantiated. 122 TSK_Undeclared = 0, 123 /// This template specialization was implicitly instantiated from a 124 /// template. (C++ [temp.inst]). 125 TSK_ImplicitInstantiation, 126 /// This template specialization was declared or defined by an 127 /// explicit specialization (C++ [temp.expl.spec]) or partial 128 /// specialization (C++ [temp.class.spec]). 129 TSK_ExplicitSpecialization, 130 /// This template specialization was instantiated from a template 131 /// due to an explicit instantiation declaration request 132 /// (C++0x [temp.explicit]). 133 TSK_ExplicitInstantiationDeclaration, 134 /// This template specialization was instantiated from a template 135 /// due to an explicit instantiation definition request 136 /// (C++ [temp.explicit]). 137 TSK_ExplicitInstantiationDefinition 138 }; 139 140 /// \brief Storage classes. 141 enum StorageClass { 142 // These are legal on both functions and variables. 143 SC_None, 144 SC_Extern, 145 SC_Static, 146 SC_PrivateExtern, 147 148 // These are only legal on variables. 149 SC_Auto, 150 SC_Register 151 }; 152 153 /// Checks whether the given storage class is legal for functions. 154 inline bool isLegalForFunction(StorageClass SC) { 155 return SC <= SC_PrivateExtern; 156 } 157 158 /// Checks whether the given storage class is legal for variables. 159 inline bool isLegalForVariable(StorageClass SC) { 160 return true; 161 } 162 } // end namespace clang 163 164 #endif // LLVM_CLANG_BASIC_SPECIFIERS_H 165
