/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/include/clang/Basic/Specifiers.h

Source (jump to first uncovered line)
//===--- Specifiers.h - Declaration and Type Specifiers ---------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// Defines various enumerations that describe declaration and
/// type specifiers.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_BASIC_SPECIFIERS_H
#define LLVM_CLANG_BASIC_SPECIFIERS_H

#include "llvm/ADT/StringRef.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/ErrorHandling.h"

namespace clang {

  /// Define the meaning of possible values of the kind in ExplicitSpecifier.
  enum class ExplicitSpecKind : unsigned {
    ResolvedFalse,
    ResolvedTrue,
    Unresolved,
  };

  /// Define the kind of constexpr specifier.
  enum class ConstexprSpecKind { Unspecified, Constexpr, Consteval, Constinit };

  /// Specifies the width of a type, e.g., short, long, or long long.
  enum class TypeSpecifierWidth { Unspecified, Short, Long, LongLong };

  /// Specifies the signedness of a type, e.g., signed or unsigned.
  enum class TypeSpecifierSign { Unspecified, Signed, Unsigned };

  enum class TypeSpecifiersPipe { Unspecified, Pipe };

  /// Specifies the kind of type.
  enum TypeSpecifierType {
    TST_unspecified,
    TST_void,
    TST_char,
    TST_wchar,        // C++ wchar_t
    TST_char8,        // C++20 char8_t (proposed)
    TST_char16,       // C++11 char16_t
    TST_char32,       // C++11 char32_t
    TST_int,
    TST_int128,
    TST_extint,       // Extended Int types.
    TST_half,         // OpenCL half, ARM NEON __fp16
    TST_Float16,      // C11 extension ISO/IEC TS 18661-3
    TST_Accum,        // ISO/IEC JTC1 SC22 WG14 N1169 Extension
    TST_Fract,
    TST_BFloat16,
    TST_float,
    TST_double,
    TST_float128,
    TST_bool,         // _Bool
    TST_decimal32,    // _Decimal32
    TST_decimal64,    // _Decimal64
    TST_decimal128,   // _Decimal128
    TST_enum,
    TST_union,
    TST_struct,
    TST_class,        // C++ class type
    TST_interface,    // C++ (Microsoft-specific) __interface type
    TST_typename,     // Typedef, C++ class-name or enum name, etc.
    TST_typeofType,
    TST_typeofExpr,
    TST_decltype,         // C++11 decltype
    TST_underlyingType,   // __underlying_type for C++11
    TST_auto,             // C++11 auto
    TST_decltype_auto,    // C++1y decltype(auto)
    TST_auto_type,        // __auto_type extension
    TST_unknown_anytype,  // __unknown_anytype extension
    TST_atomic,           // C11 _Atomic
#define GENERIC_IMAGE_TYPE(ImgType, Id) TST_##ImgType##_t, // OpenCL image types
#include "clang/Basic/OpenCLImageTypes.def"
    TST_error // erroneous type
  };

  /// Structure that packs information about the type specifiers that
  /// were written in a particular type specifier sequence.
  struct WrittenBuiltinSpecs {
    static_assert(TST_error < 1 << 6, "Type bitfield not wide enough for TST");
    /*DeclSpec::TST*/ unsigned Type  : 6;
    /*DeclSpec::TSS*/ unsigned Sign  : 2;
    /*TypeSpecifierWidth*/ unsigned Width : 2;
    unsigned ModeAttr : 1;
  };

  /// A C++ access specifier (public, private, protected), plus the
  /// special value "none" which means different things in different contexts.
  enum AccessSpecifier {
    AS_public,
    AS_protected,
    AS_private,
    AS_none
  };

  /// The categorization of expression values, currently following the
  /// C++11 scheme.
  enum ExprValueKind {
    /// A pr-value expression (in the C++11 taxonomy)
    /// produces a temporary value.
    VK_PRValue,

    /// An l-value expression is a reference to an object with
    /// independent storage.
    VK_LValue,

    /// An x-value expression is a reference to an object with
    /// independent storage but which can be "moved", i.e.
    /// efficiently cannibalized for its resources.
    VK_XValue
  };

  /// A further classification of the kind of object referenced by an
  /// l-value or x-value.
  enum ExprObjectKind {
    /// An ordinary object is located at an address in memory.
    OK_Ordinary,

    /// A bitfield object is a bitfield on a C or C++ record.
    OK_BitField,

    /// A vector component is an element or range of elements on a vector.
    OK_VectorComponent,

    /// An Objective-C property is a logical field of an Objective-C
    /// object which is read and written via Objective-C method calls.
    OK_ObjCProperty,

    /// An Objective-C array/dictionary subscripting which reads an
    /// object or writes at the subscripted array/dictionary element via
    /// Objective-C method calls.
    OK_ObjCSubscript,

    /// A matrix component is a single element of a matrix.
    OK_MatrixComponent
  };

  /// The reason why a DeclRefExpr does not constitute an odr-use.
  enum NonOdrUseReason {
    /// This is an odr-use.
    NOUR_None = 0,
    /// This name appears in an unevaluated operand.
    NOUR_Unevaluated,
    /// This name appears as a potential result of an lvalue-to-rvalue
    /// conversion that is a constant expression.
    NOUR_Constant,
    /// This name appears as a potential result of a discarded value
    /// expression.
    NOUR_Discarded,
  };

  /// Describes the kind of template specialization that a
  /// particular template specialization declaration represents.
  enum TemplateSpecializationKind {
    /// This template specialization was formed from a template-id but
    /// has not yet been declared, defined, or instantiated.
    TSK_Undeclared = 0,
    /// This template specialization was implicitly instantiated from a
    /// template. (C++ [temp.inst]).
    TSK_ImplicitInstantiation,
    /// This template specialization was declared or defined by an
    /// explicit specialization (C++ [temp.expl.spec]) or partial
    /// specialization (C++ [temp.class.spec]).
    TSK_ExplicitSpecialization,
    /// This template specialization was instantiated from a template
    /// due to an explicit instantiation declaration request
    /// (C++11 [temp.explicit]).
    TSK_ExplicitInstantiationDeclaration,
    /// This template specialization was instantiated from a template
    /// due to an explicit instantiation definition request
    /// (C++ [temp.explicit]).
    TSK_ExplicitInstantiationDefinition
  };

  /// Determine whether this template specialization kind refers
  /// to an instantiation of an entity (as opposed to a non-template or
  /// an explicit specialization).
  inline bool isTemplateInstantiation(TemplateSpecializationKind Kind) {
    return Kind != TSK_Undeclared && Kind != TSK_ExplicitSpecialization5.34M;
  }

  /// True if this template specialization kind is an explicit
  /// specialization, explicit instantiation declaration, or explicit
  /// instantiation definition.
  inline bool isTemplateExplicitInstantiationOrSpecialization(
      TemplateSpecializationKind Kind) {
    switch (Kind) {
    case TSK_ExplicitSpecialization:
    case TSK_ExplicitInstantiationDeclaration:
    case TSK_ExplicitInstantiationDefinition:
      return true;

    case TSK_Undeclared:
    case TSK_ImplicitInstantiation:
      return false;
    }
    llvm_unreachable("bad template specialization kind");
  }

  /// Thread storage-class-specifier.
  enum ThreadStorageClassSpecifier {
    TSCS_unspecified,
    /// GNU __thread.
    TSCS___thread,
    /// C++11 thread_local. Implies 'static' at block scope, but not at
    /// class scope.
    TSCS_thread_local,
    /// C11 _Thread_local. Must be combined with either 'static' or 'extern'
    /// if used at block scope.
    TSCS__Thread_local
  };

  /// Storage classes.
  enum StorageClass {
    // These are legal on both functions and variables.
    SC_None,
    SC_Extern,
    SC_Static,
    SC_PrivateExtern,

    // These are only legal on variables.
    SC_Auto,
    SC_Register
  };

  /// Checks whether the given storage class is legal for functions.
  inline bool isLegalForFunction(StorageClass SC) {
    return SC <= SC_PrivateExtern;
  }

  /// Checks whether the given storage class is legal for variables.
  inline bool isLegalForVariable(StorageClass SC) {
    return true;
  }

  /// In-class initialization styles for non-static data members.
  enum InClassInitStyle {
    ICIS_NoInit,   ///< No in-class initializer.
    ICIS_CopyInit, ///< Copy initialization.
    ICIS_ListInit  ///< Direct list-initialization.
  };

  /// CallingConv - Specifies the calling convention that a function uses.
  enum CallingConv {
    CC_C,           // __attribute__((cdecl))
    CC_X86StdCall,  // __attribute__((stdcall))
    CC_X86FastCall, // __attribute__((fastcall))
    CC_X86ThisCall, // __attribute__((thiscall))
    CC_X86VectorCall, // __attribute__((vectorcall))
    CC_X86Pascal,   // __attribute__((pascal))
    CC_Win64,       // __attribute__((ms_abi))
    CC_X86_64SysV,  // __attribute__((sysv_abi))
    CC_X86RegCall, // __attribute__((regcall))
    CC_AAPCS,       // __attribute__((pcs("aapcs")))
    CC_AAPCS_VFP,   // __attribute__((pcs("aapcs-vfp")))
    CC_IntelOclBicc, // __attribute__((intel_ocl_bicc))
    CC_SpirFunction, // default for OpenCL functions on SPIR target
    CC_OpenCLKernel, // inferred for OpenCL kernels
    CC_Swift,        // __attribute__((swiftcall))
    CC_SwiftAsync,        // __attribute__((swiftasynccall))
    CC_PreserveMost, // __attribute__((preserve_most))
    CC_PreserveAll,  // __attribute__((preserve_all))
    CC_AArch64VectorCall, // __attribute__((aarch64_vector_pcs))
  };

  /// Checks whether the given calling convention supports variadic
  /// calls. Unprototyped calls also use the variadic call rules.
  inline bool supportsVariadicCall(CallingConv CC) {
    switch (CC) {
    case CC_X86StdCall:
    case CC_X86FastCall:
    case CC_X86ThisCall:
    case CC_X86RegCall:
    case CC_X86Pascal:
    case CC_X86VectorCall:
    case CC_SpirFunction:
    case CC_OpenCLKernel:
    case CC_Swift:
    case CC_SwiftAsync:
      return false;
    default:
      return true;
    }
  }

  /// The storage duration for an object (per C++ [basic.stc]).
  enum StorageDuration {
    SD_FullExpression, ///< Full-expression storage duration (for temporaries).
    SD_Automatic,      ///< Automatic storage duration (most local variables).
    SD_Thread,         ///< Thread storage duration.
    SD_Static,         ///< Static storage duration.
    SD_Dynamic         ///< Dynamic storage duration.
  };

  /// Describes the nullability of a particular type.
  enum class NullabilityKind : uint8_t {
    /// Values of this type can never be null.
    NonNull = 0,
    /// Values of this type can be null.
    Nullable,
    /// Whether values of this type can be null is (explicitly)
    /// unspecified. This captures a (fairly rare) case where we
    /// can't conclude anything about the nullability of the type even
    /// though it has been considered.
    Unspecified,
    // Generally behaves like Nullable, except when used in a block parameter
    // that was imported into a swift async method. There, swift will assume
    // that the parameter can get null even if no error occured. _Nullable
    // parameters are assumed to only get null on error.
    NullableResult,
  };

  /// Return true if \p L has a weaker nullability annotation than \p R. The
  /// ordering is: Unspecified < Nullable < NonNull.
  inline bool hasWeakerNullability(NullabilityKind L, NullabilityKind R) {
    return uint8_t(L) > uint8_t(R);
  }

  /// Retrieve the spelling of the given nullability kind.
  llvm::StringRef getNullabilitySpelling(NullabilityKind kind,
                                         bool isContextSensitive = false);

  /// Kinds of parameter ABI.
  enum class ParameterABI {
    /// This parameter uses ordinary ABI rules for its type.
    Ordinary,

    /// This parameter (which must have pointer type) is a Swift
    /// indirect result parameter.
    SwiftIndirectResult,

    /// This parameter (which must have pointer-to-pointer type) uses
    /// the special Swift error-result ABI treatment.  There can be at
    /// most one parameter on a given function that uses this treatment.
    SwiftErrorResult,

    /// This parameter (which must have pointer type) uses the special
    /// Swift context-pointer ABI treatment.  There can be at
    /// most one parameter on a given function that uses this treatment.
    SwiftContext,

    /// This parameter (which must have pointer type) uses the special
    /// Swift asynchronous context-pointer ABI treatment.  There can be at
    /// most one parameter on a given function that uses this treatment.
    SwiftAsyncContext,
  };

  /// Assigned inheritance model for a class in the MS C++ ABI. Must match order
  /// of spellings in MSInheritanceAttr.
  enum class MSInheritanceModel {
    Single = 0,
    Multiple = 1,
    Virtual = 2,
    Unspecified = 3,
  };

  llvm::StringRef getParameterABISpelling(ParameterABI kind);

  inline llvm::StringRef getAccessSpelling(AccessSpecifier AS) {
    switch (AS) {
    case AccessSpecifier::AS_public:
      return "public";
    case AccessSpecifier::AS_protected:
      return "protected";
    case AccessSpecifier::AS_private:
      return "private";
    case AccessSpecifier::AS_none:
      return {};
    }
    llvm_unreachable("Unknown AccessSpecifier");
  }
} // end namespace clang

#endif // LLVM_CLANG_BASIC_SPECIFIERS_H

Coverage Report

Created: 2021-08-24 07:12

Line	Count	Source (jump to first uncovered line)
1		//===--- Specifiers.h - Declaration and Type Specifiers ---------- C++ --===//
2		//
3		// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4		// See https://llvm.org/LICENSE.txt for license information.
5		// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6		//
7		//===----------------------------------------------------------------------===//
8		///
9		/// \file
10		/// 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		#include "llvm/ADT/StringRef.h"
19		#include "llvm/Support/DataTypes.h"
20		#include "llvm/Support/ErrorHandling.h"
21
22		namespace clang {
23
24		/// Define the meaning of possible values of the kind in ExplicitSpecifier.
25		enum class ExplicitSpecKind : unsigned {
26		ResolvedFalse,
27		ResolvedTrue,
28		Unresolved,
29		};
30
31		/// Define the kind of constexpr specifier.
32		enum class ConstexprSpecKind { Unspecified, Constexpr, Consteval, Constinit };
33
34		/// Specifies the width of a type, e.g., short, long, or long long.
35		enum class TypeSpecifierWidth { Unspecified, Short, Long, LongLong };
36
37		/// Specifies the signedness of a type, e.g., signed or unsigned.
38		enum class TypeSpecifierSign { Unspecified, Signed, Unsigned };
39
40		enum class TypeSpecifiersPipe { Unspecified, Pipe };
41
42		/// Specifies the kind of type.
43		enum TypeSpecifierType {
44		TST_unspecified,
45		TST_void,
46		TST_char,
47		TST_wchar, // C++ wchar_t
48		TST_char8, // C++20 char8_t (proposed)
49		TST_char16, // C++11 char16_t
50		TST_char32, // C++11 char32_t
51		TST_int,
52		TST_int128,
53		TST_extint, // Extended Int types.
54		TST_half, // OpenCL half, ARM NEON __fp16
55		TST_Float16, // C11 extension ISO/IEC TS 18661-3
56		TST_Accum, // ISO/IEC JTC1 SC22 WG14 N1169 Extension
57		TST_Fract,
58		TST_BFloat16,
59		TST_float,
60		TST_double,
61		TST_float128,
62		TST_bool, // _Bool
63		TST_decimal32, // _Decimal32
64		TST_decimal64, // _Decimal64
65		TST_decimal128, // _Decimal128
66		TST_enum,
67		TST_union,
68		TST_struct,
69		TST_class, // C++ class type
70		TST_interface, // C++ (Microsoft-specific) __interface type
71		TST_typename, // Typedef, C++ class-name or enum name, etc.
72		TST_typeofType,
73		TST_typeofExpr,
74		TST_decltype, // C++11 decltype
75		TST_underlyingType, // __underlying_type for C++11
76		TST_auto, // C++11 auto
77		TST_decltype_auto, // C++1y decltype(auto)
78		TST_auto_type, // __auto_type extension
79		TST_unknown_anytype, // __unknown_anytype extension
80		TST_atomic, // C11 _Atomic
81		#define GENERIC_IMAGE_TYPE(ImgType, Id) TST_##ImgType##_t, // OpenCL image types
82		#include "clang/Basic/OpenCLImageTypes.def"
83		TST_error // erroneous type
84		};
85
86		/// Structure that packs information about the type specifiers that
87		/// were written in a particular type specifier sequence.
88		struct WrittenBuiltinSpecs {
89		static_assert(TST_error < 1 << 6, "Type bitfield not wide enough for TST");
90		/DeclSpec::TST/ unsigned Type : 6;
91		/DeclSpec::TSS/ unsigned Sign : 2;
92		/TypeSpecifierWidth/ unsigned Width : 2;
93		unsigned ModeAttr : 1;
94		};
95
96		/// A C++ access specifier (public, private, protected), plus the
97		/// special value "none" which means different things in different contexts.
98		enum AccessSpecifier {
99		AS_public,
100		AS_protected,
101		AS_private,
102		AS_none
103		};
104
105		/// The categorization of expression values, currently following the
106		/// C++11 scheme.
107		enum ExprValueKind {
108		/// A pr-value expression (in the C++11 taxonomy)
109		/// produces a temporary value.
110		VK_PRValue,
111
112		/// An l-value expression is a reference to an object with
113		/// independent storage.
114		VK_LValue,
115
116		/// An x-value expression is a reference to an object with
117		/// independent storage but which can be "moved", i.e.
118		/// efficiently cannibalized for its resources.
119		VK_XValue
120		};
121
122		/// A further classification of the kind of object referenced by an
123		/// l-value or x-value.
124		enum ExprObjectKind {
125		/// An ordinary object is located at an address in memory.
126		OK_Ordinary,
127
128		/// A bitfield object is a bitfield on a C or C++ record.
129		OK_BitField,
130
131		/// A vector component is an element or range of elements on a vector.
132		OK_VectorComponent,
133
134		/// An Objective-C property is a logical field of an Objective-C
135		/// object which is read and written via Objective-C method calls.
136		OK_ObjCProperty,
137
138		/// An Objective-C array/dictionary subscripting which reads an
139		/// object or writes at the subscripted array/dictionary element via
140		/// Objective-C method calls.
141		OK_ObjCSubscript,
142
143		/// A matrix component is a single element of a matrix.
144		OK_MatrixComponent
145		};
146
147		/// The reason why a DeclRefExpr does not constitute an odr-use.
148		enum NonOdrUseReason {
149		/// This is an odr-use.
150		NOUR_None = 0,
151		/// This name appears in an unevaluated operand.
152		NOUR_Unevaluated,
153		/// This name appears as a potential result of an lvalue-to-rvalue
154		/// conversion that is a constant expression.
155		NOUR_Constant,
156		/// This name appears as a potential result of a discarded value
157		/// expression.
158		NOUR_Discarded,
159		};
160
161		/// Describes the kind of template specialization that a
162		/// particular template specialization declaration represents.
163		enum TemplateSpecializationKind {
164		/// This template specialization was formed from a template-id but
165		/// has not yet been declared, defined, or instantiated.
166		TSK_Undeclared = 0,
167		/// This template specialization was implicitly instantiated from a
168		/// template. (C++ [temp.inst]).
169		TSK_ImplicitInstantiation,
170		/// This template specialization was declared or defined by an
171		/// explicit specialization (C++ [temp.expl.spec]) or partial
172		/// specialization (C++ [temp.class.spec]).
173		TSK_ExplicitSpecialization,
174		/// This template specialization was instantiated from a template
175		/// due to an explicit instantiation declaration request
176		/// (C++11 [temp.explicit]).
177		TSK_ExplicitInstantiationDeclaration,
178		/// This template specialization was instantiated from a template
179		/// due to an explicit instantiation definition request
180		/// (C++ [temp.explicit]).
181		TSK_ExplicitInstantiationDefinition
182		};
183
184		/// Determine whether this template specialization kind refers
185		/// to an instantiation of an entity (as opposed to a non-template or
186		/// an explicit specialization).
187	22.5M	inline bool isTemplateInstantiation(TemplateSpecializationKind Kind) {
188	22.5M	return Kind != TSK_Undeclared && Kind != TSK_ExplicitSpecialization5.34M ;
189	22.5M	}
190
191		/// True if this template specialization kind is an explicit
192		/// specialization, explicit instantiation declaration, or explicit
193		/// instantiation definition.
194		inline bool isTemplateExplicitInstantiationOrSpecialization(
195	1.26M	TemplateSpecializationKind Kind) {
196	1.26M	switch (Kind) {
197	105k	case TSK_ExplicitSpecialization:
198	112k	case TSK_ExplicitInstantiationDeclaration:
199	119k	case TSK_ExplicitInstantiationDefinition:
200	119k	return true;
201
202	47.3k	case TSK_Undeclared:
203	1.14M	case TSK_ImplicitInstantiation:
204	1.14M	return false;
205	1.26M	}
206	0	llvm_unreachable("bad template specialization kind");
207	0	}
208
209		/// Thread storage-class-specifier.
210		enum ThreadStorageClassSpecifier {
211		TSCS_unspecified,
212		/// GNU __thread.
213		TSCS___thread,
214		/// C++11 thread_local. Implies 'static' at block scope, but not at
215		/// class scope.
216		TSCS_thread_local,
217		/// C11 _Thread_local. Must be combined with either 'static' or 'extern'
218		/// if used at block scope.
219		TSCS__Thread_local
220		};
221
222		/// Storage classes.
223		enum StorageClass {
224		// These are legal on both functions and variables.
225		SC_None,
226		SC_Extern,
227		SC_Static,
228		SC_PrivateExtern,
229
230		// These are only legal on variables.
231		SC_Auto,
232		SC_Register
233		};
234
235		/// Checks whether the given storage class is legal for functions.
236	0	inline bool isLegalForFunction(StorageClass SC) {
237	0	return SC <= SC_PrivateExtern;
238	0	}
239
240		/// Checks whether the given storage class is legal for variables.
241	59.5k	inline bool isLegalForVariable(StorageClass SC) {
242	59.5k	return true;
243	59.5k	}
244
245		/// In-class initialization styles for non-static data members.
246		enum InClassInitStyle {
247		ICIS_NoInit, ///< No in-class initializer.
248		ICIS_CopyInit, ///< Copy initialization.
249		ICIS_ListInit ///< Direct list-initialization.
250		};
251
252		/// CallingConv - Specifies the calling convention that a function uses.
253		enum CallingConv {
254		CC_C, // __attribute__((cdecl))
255		CC_X86StdCall, // __attribute__((stdcall))
256		CC_X86FastCall, // __attribute__((fastcall))
257		CC_X86ThisCall, // __attribute__((thiscall))
258		CC_X86VectorCall, // __attribute__((vectorcall))
259		CC_X86Pascal, // __attribute__((pascal))
260		CC_Win64, // __attribute__((ms_abi))
261		CC_X86_64SysV, // __attribute__((sysv_abi))
262		CC_X86RegCall, // __attribute__((regcall))
263		CC_AAPCS, // __attribute__((pcs("aapcs")))
264		CC_AAPCS_VFP, // __attribute__((pcs("aapcs-vfp")))
265		CC_IntelOclBicc, // __attribute__((intel_ocl_bicc))
266		CC_SpirFunction, // default for OpenCL functions on SPIR target
267		CC_OpenCLKernel, // inferred for OpenCL kernels
268		CC_Swift, // __attribute__((swiftcall))
269		CC_SwiftAsync, // __attribute__((swiftasynccall))
270		CC_PreserveMost, // __attribute__((preserve_most))
271		CC_PreserveAll, // __attribute__((preserve_all))
272		CC_AArch64VectorCall, // __attribute__((aarch64_vector_pcs))
273		};
274
275		/// Checks whether the given calling convention supports variadic
276		/// calls. Unprototyped calls also use the variadic call rules.
277	98.6k	inline bool supportsVariadicCall(CallingConv CC) {
278	98.6k	switch (CC) {
279	223	case CC_X86StdCall:
280	395	case CC_X86FastCall:
281	465	case CC_X86ThisCall:
282	589	case CC_X86RegCall:
283	605	case CC_X86Pascal:
284	796	case CC_X86VectorCall:
285	796	case CC_SpirFunction:
286	796	case CC_OpenCLKernel:
287	2.01k	case CC_Swift:
288	2.17k	case CC_SwiftAsync:
289	2.17k	return false;
290	96.5k	default:
291	96.5k	return true;
292	98.6k	}
293	98.6k	}
294
295		/// The storage duration for an object (per C++ [basic.stc]).
296		enum StorageDuration {
297		SD_FullExpression, ///< Full-expression storage duration (for temporaries).
298		SD_Automatic, ///< Automatic storage duration (most local variables).
299		SD_Thread, ///< Thread storage duration.
300		SD_Static, ///< Static storage duration.
301		SD_Dynamic ///< Dynamic storage duration.
302		};
303
304		/// Describes the nullability of a particular type.
305		enum class NullabilityKind : uint8_t {
306		/// Values of this type can never be null.
307		NonNull = 0,
308		/// Values of this type can be null.
309		Nullable,
310		/// Whether values of this type can be null is (explicitly)
311		/// unspecified. This captures a (fairly rare) case where we
312		/// can't conclude anything about the nullability of the type even
313		/// though it has been considered.
314		Unspecified,
315		// Generally behaves like Nullable, except when used in a block parameter
316		// that was imported into a swift async method. There, swift will assume
317		// that the parameter can get null even if no error occured. _Nullable
318		// parameters are assumed to only get null on error.
319		NullableResult,
320		};
321
322		/// Return true if \p L has a weaker nullability annotation than \p R. The
323		/// ordering is: Unspecified < Nullable < NonNull.
324	2	inline bool hasWeakerNullability(NullabilityKind L, NullabilityKind R) {
325	2	return uint8_t(L) > uint8_t(R);
326	2	}
327
328		/// Retrieve the spelling of the given nullability kind.
329		llvm::StringRef getNullabilitySpelling(NullabilityKind kind,
330		bool isContextSensitive = false);
331
332		/// Kinds of parameter ABI.
333		enum class ParameterABI {
334		/// This parameter uses ordinary ABI rules for its type.
335		Ordinary,
336
337		/// This parameter (which must have pointer type) is a Swift
338		/// indirect result parameter.
339		SwiftIndirectResult,
340
341		/// This parameter (which must have pointer-to-pointer type) uses
342		/// the special Swift error-result ABI treatment. There can be at
343		/// most one parameter on a given function that uses this treatment.
344		SwiftErrorResult,
345
346		/// This parameter (which must have pointer type) uses the special
347		/// Swift context-pointer ABI treatment. There can be at
348		/// most one parameter on a given function that uses this treatment.
349		SwiftContext,
350
351		/// This parameter (which must have pointer type) uses the special
352		/// Swift asynchronous context-pointer ABI treatment. There can be at
353		/// most one parameter on a given function that uses this treatment.
354		SwiftAsyncContext,
355		};
356
357		/// Assigned inheritance model for a class in the MS C++ ABI. Must match order
358		/// of spellings in MSInheritanceAttr.
359		enum class MSInheritanceModel {
360		Single = 0,
361		Multiple = 1,
362		Virtual = 2,
363		Unspecified = 3,
364		};
365
366		llvm::StringRef getParameterABISpelling(ParameterABI kind);
367
368	1.70k	inline llvm::StringRef getAccessSpelling(AccessSpecifier AS) {
369	1.70k	switch (AS) {
370	1.32k	case AccessSpecifier::AS_public:
371	1.32k	return "public";
372	310	case AccessSpecifier::AS_protected:
373	310	return "protected";
374	60	case AccessSpecifier::AS_private:
375	60	return "private";
376	9	case AccessSpecifier::AS_none:
377	9	return {};
378	1.70k	}
379	0	llvm_unreachable("Unknown AccessSpecifier");
380	0	}
381		} // end namespace clang
382
383		#endif // LLVM_CLANG_BASIC_SPECIFIERS_H