clang-tools 10.0.0

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
9 #include "VariadicFunctionDefCheck.h"
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 if (!getLangOpts().CPlusPlus)
21 return;
22
23 // We only care about function *definitions* that are variadic, and do not
24 // have extern "C" language linkage.
25 Finder->addMatcher(
26 functionDecl(isDefinition(), isVariadic(), unless(isExternC()))
27 .bind("func"),
28 this);
29 }
30
31 void VariadicFunctionDefCheck::check(const MatchFinder::MatchResult &Result) {
32 const auto *FD = Result.Nodes.getNodeAs<FunctionDecl>("func");
33
34 diag(FD->getLocation(),
35 "do not define a C-style variadic function; consider using a function "
36 "parameter pack or currying instead");
37 }
38
39 } // namespace cert
40 } // namespace tidy
41 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:14
VariadicFunctionDefCheck.h
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27