clang-tools 17.0.0git
CloexecOpenCheck.cpp
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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(pointerType(pointee(isAnyCharacter())));
20 functionDecl(isExternC(), returns(isInteger()),
21 hasAnyName("open", "open64"),
22 hasParameter(0, CharPointerType),
23 hasParameter(1, hasType(isInteger()))));
25 functionDecl(isExternC(), returns(isInteger()),
26 hasName("openat"),
27 hasParameter(0, hasType(isInteger())),
28 hasParameter(1, CharPointerType),
29 hasParameter(2, hasType(isInteger()))));
30}
31
32void CloexecOpenCheck::check(const MatchFinder::MatchResult &Result) {
33 const auto *FD = Result.Nodes.getNodeAs<FunctionDecl>(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
void registerMatchersImpl(ast_matchers::MatchFinder *Finder, ast_matchers::internal::Matcher< FunctionDecl > Function)
void insertMacroFlag(const ast_matchers::MatchFinder::MatchResult &Result, StringRef MacroFlag, int ArgPos)
Currently, we have three types of fixes.
static const char * FuncDeclBindingStr
Binding name of the FuncDecl of a function call.
Definition: CloexecCheck.h:92
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.