37 lines · cpp
1//===----------------------------------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "TrailingReturnCheck.h"10#include "clang/ASTMatchers/ASTMatchFinder.h"11#include "clang/ASTMatchers/ASTMatchersInternal.h"12 13using namespace clang::ast_matchers;14 15namespace clang::tidy::fuchsia {16 17void TrailingReturnCheck::registerMatchers(MatchFinder *Finder) {18 // Functions that have trailing returns are disallowed, except for those19 // using decltype specifiers and lambda with otherwise unutterable20 // return types.21 Finder->addMatcher(22 functionDecl(hasTrailingReturn(),23 unless(anyOf(returns(decltypeType()),24 hasParent(cxxRecordDecl(isLambda())),25 cxxDeductionGuideDecl())))26 .bind("decl"),27 this);28}29 30void TrailingReturnCheck::check(const MatchFinder::MatchResult &Result) {31 if (const auto *D = Result.Nodes.getNodeAs<FunctionDecl>("decl"))32 diag(D->getBeginLoc(),33 "a trailing return type is disallowed for this function declaration");34}35 36} // namespace clang::tidy::fuchsia37