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/ASTMatchers/ASTMatchFinder.h" |
11 | |
12 | using namespace clang::ast_matchers; |
13 | |
14 | namespace clang::tidy::cert { |
15 | |
16 | void VariadicFunctionDefCheck::registerMatchers(MatchFinder *Finder) { |
17 | // We only care about function *definitions* that are variadic, and do not |
18 | // have extern "C" language linkage. |
19 | Finder->addMatcher( |
20 | NodeMatch: functionDecl(isDefinition(), isVariadic(), unless(isExternC())) |
21 | .bind(ID: "func"), |
22 | Action: this); |
23 | } |
24 | |
25 | void VariadicFunctionDefCheck::check(const MatchFinder::MatchResult &Result) { |
26 | const auto *FD = Result.Nodes.getNodeAs<FunctionDecl>(ID: "func"); |
27 | |
28 | diag(FD->getLocation(), |
29 | "do not define a C-style variadic function; consider using a function " |
30 | "parameter pack or currying instead"); |
31 | } |
32 | |
33 | } // namespace clang::tidy::cert |
34 |