| 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::tidy::cert { |
| 16 | |
| 17 | void VariadicFunctionDefCheck::registerMatchers(MatchFinder *Finder) { |
| 18 | // We only care about function *definitions* that are variadic, and do not |
| 19 | // have extern "C" language linkage. |
| 20 | Finder->addMatcher( |
| 21 | NodeMatch: functionDecl(isDefinition(), isVariadic(), unless(isExternC())) |
| 22 | .bind(ID: "func"), |
| 23 | Action: this); |
| 24 | } |
| 25 | |
| 26 | void VariadicFunctionDefCheck::check(const MatchFinder::MatchResult &Result) { |
| 27 | const auto *FD = Result.Nodes.getNodeAs<FunctionDecl>(ID: "func"); |
| 28 | |
| 29 | diag(FD->getLocation(), |
| 30 | "do not define a C-style variadic function; consider using a function " |
| 31 | "parameter pack or currying instead"); |
| 32 | } |
| 33 | |
| 34 | } // namespace clang::tidy::cert |
| 35 |