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//===--- UnaryStaticAssertCheck.cpp - clang-tidy---------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "UnaryStaticAssertCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
using namespace clang::ast_matchers;
namespace clang {
namespace tidy {
namespace modernize {
void UnaryStaticAssertCheck::registerMatchers(MatchFinder *Finder) {
if (!getLangOpts().CPlusPlus17)
return;
Finder->addMatcher(staticAssertDecl().bind("static_assert"), this);
}
void UnaryStaticAssertCheck::check(const MatchFinder::MatchResult &Result) {
const auto *MatchedDecl =
Result.Nodes.getNodeAs<StaticAssertDecl>("static_assert");
const StringLiteral *AssertMessage = MatchedDecl->getMessage();
SourceLocation Loc = MatchedDecl->getLocation();
if (!AssertMessage || AssertMessage->getLength() ||
AssertMessage->getBeginLoc().isMacroID() || Loc.isMacroID())
return;
diag(Loc,
"use unary 'static_assert' when the string literal is an empty string")
<< FixItHint::CreateRemoval(AssertMessage->getSourceRange());
}
} // namespace modernize
} // namespace tidy
} // namespace clang
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