1 //===--- Specifiers.h - Declaration and Type Specifiers ---------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// \brief Defines various enumerations that describe declaration and
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_CLANG_BASIC_SPECIFIERS_H
17 #define LLVM_CLANG_BASIC_SPECIFIERS_H
20 /// \brief Specifies the width of a type, e.g., short, long, or long long.
21 enum TypeSpecifierWidth {
28 /// \brief Specifies the signedness of a type, e.g., signed or unsigned.
29 enum TypeSpecifierSign {
35 /// \brief Specifies the kind of type.
36 enum TypeSpecifierType {
40 TST_wchar, // C++ wchar_t
41 TST_char16, // C++11 char16_t
42 TST_char32, // C++11 char32_t
45 TST_half, // OpenCL half, ARM NEON __fp16
49 TST_decimal32, // _Decimal32
50 TST_decimal64, // _Decimal64
51 TST_decimal128, // _Decimal128
55 TST_class, // C++ class type
56 TST_interface, // C++ (Microsoft-specific) __interface type
57 TST_typename, // Typedef, C++ class-name or enum name, etc.
60 TST_decltype, // C++11 decltype
61 TST_underlyingType, // __underlying_type for C++11
62 TST_auto, // C++11 auto
63 TST_decltype_auto, // C++1y decltype(auto)
64 TST_unknown_anytype, // __unknown_anytype extension
65 TST_atomic, // C11 _Atomic
66 TST_error // erroneous type
69 /// \brief Structure that packs information about the type specifiers that
70 /// were written in a particular type specifier sequence.
71 struct WrittenBuiltinSpecs {
72 /*DeclSpec::TST*/ unsigned Type : 5;
73 /*DeclSpec::TSS*/ unsigned Sign : 2;
74 /*DeclSpec::TSW*/ unsigned Width : 2;
78 /// \brief A C++ access specifier (public, private, protected), plus the
79 /// special value "none" which means different things in different contexts.
80 enum AccessSpecifier {
87 /// \brief The categorization of expression values, currently following the
90 /// \brief An r-value expression (a pr-value in the C++11 taxonomy)
91 /// produces a temporary value.
94 /// \brief An l-value expression is a reference to an object with
95 /// independent storage.
98 /// \brief An x-value expression is a reference to an object with
99 /// independent storage but which can be "moved", i.e.
100 /// efficiently cannibalized for its resources.
104 /// \brief A further classification of the kind of object referenced by an
105 /// l-value or x-value.
106 enum ExprObjectKind {
107 /// An ordinary object is located at an address in memory.
110 /// A bitfield object is a bitfield on a C or C++ record.
113 /// A vector component is an element or range of elements on a vector.
116 /// An Objective-C property is a logical field of an Objective-C
117 /// object which is read and written via Objective-C method calls.
120 /// An Objective-C array/dictionary subscripting which reads an
121 /// object or writes at the subscripted array/dictionary element via
122 /// Objective-C method calls.
126 /// \brief Describes the kind of template specialization that a
127 /// particular template specialization declaration represents.
128 enum TemplateSpecializationKind {
129 /// This template specialization was formed from a template-id but
130 /// has not yet been declared, defined, or instantiated.
132 /// This template specialization was implicitly instantiated from a
133 /// template. (C++ [temp.inst]).
134 TSK_ImplicitInstantiation,
135 /// This template specialization was declared or defined by an
136 /// explicit specialization (C++ [temp.expl.spec]) or partial
137 /// specialization (C++ [temp.class.spec]).
138 TSK_ExplicitSpecialization,
139 /// This template specialization was instantiated from a template
140 /// due to an explicit instantiation declaration request
141 /// (C++11 [temp.explicit]).
142 TSK_ExplicitInstantiationDeclaration,
143 /// This template specialization was instantiated from a template
144 /// due to an explicit instantiation definition request
145 /// (C++ [temp.explicit]).
146 TSK_ExplicitInstantiationDefinition
149 /// \brief Determine whether this template specialization kind refers
150 /// to an instantiation of an entity (as opposed to a non-template or
151 /// an explicit specialization).
152 inline bool isTemplateInstantiation(TemplateSpecializationKind Kind) {
153 return Kind != TSK_Undeclared && Kind != TSK_ExplicitSpecialization;
156 /// \brief Thread storage-class-specifier.
157 enum ThreadStorageClassSpecifier {
161 /// C++11 thread_local. Implies 'static' at block scope, but not at
164 /// C11 _Thread_local. Must be combined with either 'static' or 'extern'
165 /// if used at block scope.
169 /// \brief Storage classes.
171 // These are legal on both functions and variables.
177 // These are only legal on variables.
178 SC_OpenCLWorkGroupLocal,
183 /// \brief Checks whether the given storage class is legal for functions.
184 inline bool isLegalForFunction(StorageClass SC) {
185 return SC <= SC_PrivateExtern;
188 /// \brief Checks whether the given storage class is legal for variables.
189 inline bool isLegalForVariable(StorageClass SC) {
193 /// \brief In-class initialization styles for non-static data members.
194 enum InClassInitStyle {
195 ICIS_NoInit, ///< No in-class initializer.
196 ICIS_CopyInit, ///< Copy initialization.
197 ICIS_ListInit ///< Direct list-initialization.
200 /// \brief CallingConv - Specifies the calling convention that a function uses.
202 CC_C, // __attribute__((cdecl))
203 CC_X86StdCall, // __attribute__((stdcall))
204 CC_X86FastCall, // __attribute__((fastcall))
205 CC_X86ThisCall, // __attribute__((thiscall))
206 CC_X86Pascal, // __attribute__((pascal))
207 CC_X86_64Win64, // __attribute__((ms_abi))
208 CC_X86_64SysV, // __attribute__((sysv_abi))
209 CC_AAPCS, // __attribute__((pcs("aapcs")))
210 CC_AAPCS_VFP, // __attribute__((pcs("aapcs-vfp")))
211 CC_PnaclCall, // __attribute__((pnaclcall))
212 CC_IntelOclBicc // __attribute__((intel_ocl_bicc))
215 /// \brief Checks whether the given calling convention is callee-cleanup.
216 inline bool isCalleeCleanup(CallingConv CC) {
228 /// \brief The storage duration for an object (per C++ [basic.stc]).
229 enum StorageDuration {
230 SD_FullExpression, ///< Full-expression storage duration (for temporaries).
231 SD_Automatic, ///< Automatic storage duration (most local variables).
232 SD_Thread, ///< Thread storage duration.
233 SD_Static, ///< Static storage duration.
234 SD_Dynamic ///< Dynamic storage duration.
236 } // end namespace clang
238 #endif // LLVM_CLANG_BASIC_SPECIFIERS_H