1 //===--- TemplateKinds.h - Enum values for C++ Template Kinds ---*- 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 the clang::TemplateNameKind enum. 11 /// 12 //===----------------------------------------------------------------------===// 13 #ifndef LLVM_CLANG_BASIC_TEMPLATEKINDS_H 14 #define LLVM_CLANG_BASIC_TEMPLATEKINDS_H 15 16 namespace clang { 17 18 /// Specifies the kind of template name that an identifier refers to. 19 /// Be careful when changing this: this enumeration is used in diagnostics. 20 enum TemplateNameKind { 21 /// The name does not refer to a template. 22 TNK_Non_template = 0, 23 /// The name refers to a function template or a set of overloaded 24 /// functions that includes at least one function template, or (in C++20) 25 /// refers to a set of non-template functions but is followed by a '<'. 26 TNK_Function_template, 27 /// The name refers to a template whose specialization produces a 28 /// type. The template itself could be a class template, template 29 /// template parameter, or template alias. 30 TNK_Type_template, 31 /// The name refers to a variable template whose specialization produces a 32 /// variable. 33 TNK_Var_template, 34 /// The name refers to a dependent template name: 35 /// \code 36 /// template<typename MetaFun, typename T1, typename T2> struct apply2 { 37 /// typedef typename MetaFun::template apply<T1, T2>::type type; 38 /// }; 39 /// \endcode 40 /// 41 /// Here, "apply" is a dependent template name within the typename 42 /// specifier in the typedef. "apply" is a nested template, and 43 /// whether the template name is assumed to refer to a type template or a 44 /// function template depends on the context in which the template 45 /// name occurs. 46 TNK_Dependent_template_name, 47 /// Lookup for the name failed, but we're assuming it was a template name 48 /// anyway. In C++20, this is mandatory in order to parse ADL-only function 49 /// template specialization calls. 50 TNK_Undeclared_template, 51 /// The name refers to a concept. 52 TNK_Concept_template, 53 }; 54 55 } 56 #endif 57