1//===--- CloexecOpenCheck.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 "CloexecOpenCheck.h"
10#include "clang/AST/ASTContext.h"
11#include "clang/ASTMatchers/ASTMatchFinder.h"
12
13using namespace clang::ast_matchers;
14
15namespace clang::tidy::android {
16
17void CloexecOpenCheck::registerMatchers(MatchFinder *Finder) {
18 auto CharPointerType = hasType(InnerMatcher: pointerType(pointee(isAnyCharacter())));
19 registerMatchersImpl(Finder,
20 Function: functionDecl(isExternC(), returns(InnerMatcher: isInteger()),
21 hasAnyName("open", "open64"),
22 hasParameter(N: 0, InnerMatcher: CharPointerType),
23 hasParameter(N: 1, InnerMatcher: hasType(InnerMatcher: isInteger()))));
24 registerMatchersImpl(Finder,
25 Function: functionDecl(isExternC(), returns(InnerMatcher: isInteger()),
26 hasName(Name: "openat"),
27 hasParameter(N: 0, InnerMatcher: hasType(InnerMatcher: isInteger())),
28 hasParameter(N: 1, InnerMatcher: CharPointerType),
29 hasParameter(N: 2, InnerMatcher: hasType(InnerMatcher: isInteger()))));
30}
31
32void CloexecOpenCheck::check(const MatchFinder::MatchResult &Result) {
33 const auto *FD = Result.Nodes.getNodeAs<FunctionDecl>(ID: FuncDeclBindingStr);
34 assert(FD->param_size() > 1);
35 int ArgPos = (FD->param_size() > 2) ? 2 : 1;
36 insertMacroFlag(Result, /*MacroFlag=*/"O_CLOEXEC", ArgPos);
37}
38
39} // namespace clang::tidy::android
40

source code of clang-tools-extra/clang-tidy/android/CloexecOpenCheck.cpp