1 //===--- UnaryStaticAssertCheck.cpp - clang-tidy---------------------------===// 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 #include "UnaryStaticAssertCheck.h" 10 #include "clang/AST/ASTContext.h" 11 #include "clang/ASTMatchers/ASTMatchFinder.h" 12 13 using namespace clang::ast_matchers; 14 15 namespace clang::tidy::modernize { 16 registerMatchers(MatchFinder * Finder)17void UnaryStaticAssertCheck::registerMatchers(MatchFinder *Finder) { 18 Finder->addMatcher(staticAssertDecl().bind("static_assert"), this); 19 } 20 check(const MatchFinder::MatchResult & Result)21void UnaryStaticAssertCheck::check(const MatchFinder::MatchResult &Result) { 22 const auto *MatchedDecl = 23 Result.Nodes.getNodeAs<StaticAssertDecl>("static_assert"); 24 const auto *AssertMessage = 25 dyn_cast_if_present<StringLiteral>(MatchedDecl->getMessage()); 26 27 SourceLocation Loc = MatchedDecl->getLocation(); 28 29 if (!AssertMessage || AssertMessage->getLength() || 30 AssertMessage->getBeginLoc().isMacroID() || Loc.isMacroID()) 31 return; 32 33 diag(Loc, 34 "use unary 'static_assert' when the string literal is an empty string") 35 << FixItHint::CreateRemoval(AssertMessage->getSourceRange()); 36 } 37 38 } // namespace clang::tidy::modernize 39