clang-tools  16.0.0git
VariadicFunctionDefCheck.cpp
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1 //===-- VariadicFunctionDefCheck.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 
10 #include "clang/AST/ASTContext.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12 
13 using namespace clang::ast_matchers;
14 
15 namespace clang {
16 namespace tidy {
17 namespace cert {
18 
19 void VariadicFunctionDefCheck::registerMatchers(MatchFinder *Finder) {
20  // We only care about function *definitions* that are variadic, and do not
21  // have extern "C" language linkage.
22  Finder->addMatcher(
23  functionDecl(isDefinition(), isVariadic(), unless(isExternC()))
24  .bind("func"),
25  this);
26 }
27 
28 void VariadicFunctionDefCheck::check(const MatchFinder::MatchResult &Result) {
29  const auto *FD = Result.Nodes.getNodeAs<FunctionDecl>("func");
30 
31  diag(FD->getLocation(),
32  "do not define a C-style variadic function; consider using a function "
33  "parameter pack or currying instead");
34 }
35 
36 } // namespace cert
37 } // namespace tidy
38 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:14
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27
clang::clangd::check
bool check(llvm::StringRef File, const ThreadsafeFS &TFS, const ClangdLSPServer::Options &Opts)
Definition: Check.cpp:418
VariadicFunctionDefCheck.h