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//===-- VariadicFunctionDefCheck.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 "VariadicFunctionDefCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
using namespace clang::ast_matchers;
namespace clang {
namespace tidy {
namespace cert {
void VariadicFunctionDefCheck::registerMatchers(MatchFinder *Finder) {
// We only care about function *definitions* that are variadic, and do not
// have extern "C" language linkage.
Finder->addMatcher(
functionDecl(isDefinition(), isVariadic(), unless(isExternC()))
.bind("func"),
this);
}
void VariadicFunctionDefCheck::check(const MatchFinder::MatchResult &Result) {
const auto *FD = Result.Nodes.getNodeAs<FunctionDecl>("func");
diag(FD->getLocation(),
"do not define a C-style variadic function; consider using a function "
"parameter pack or currying instead");
}
} // namespace cert
} // namespace tidy
} // namespace clang
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