| 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 | |
| 17 | void UnaryStaticAssertCheck::registerMatchers(MatchFinder *Finder) { |
| 18 | Finder->addMatcher(NodeMatch: staticAssertDecl().bind(ID: "static_assert"), Action: this); |
| 19 | } |
| 20 | |
| 21 | void UnaryStaticAssertCheck::check(const MatchFinder::MatchResult &Result) { |
| 22 | const auto *MatchedDecl = |
| 23 | Result.Nodes.getNodeAs<StaticAssertDecl>(ID: "static_assert"); |
| 24 | const auto *AssertMessage = |
| 25 | dyn_cast_if_present<StringLiteral>(Val: 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 | Description: "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 |