1 //=== SelectorExtras.h - Helpers for checkers using selectors -----*- 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 #ifndef LLVM_CLANG_ANALYSIS_SELECTOREXTRAS_H 10 #define LLVM_CLANG_ANALYSIS_SELECTOREXTRAS_H 11 12 #include "clang/AST/ASTContext.h" 13 14 namespace clang { 15 16 template <typename... IdentifierInfos> 17 static inline Selector getKeywordSelector(ASTContext &Ctx, 18 IdentifierInfos *... IIs) { 19 static_assert(sizeof...(IdentifierInfos) > 0, 20 "keyword selectors must have at least one argument"); 21 SmallVector<IdentifierInfo *, 10> II({&Ctx.Idents.get(IIs)...}); 22 23 return Ctx.Selectors.getSelector(II.size(), &II[0]); 24 } 25 26 template <typename... IdentifierInfos> 27 static inline void lazyInitKeywordSelector(Selector &Sel, ASTContext &Ctx, 28 IdentifierInfos *... IIs) { 29 if (!Sel.isNull()) 30 return; 31 Sel = getKeywordSelector(Ctx, IIs...); 32 } 33 34 } // end namespace clang 35 36 #endif 37