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

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source code of clang-tools-extra/clang-tidy/modernize/UnaryStaticAssertCheck.cpp