clang-tools 20.0.0git
AvoidNSErrorInitCheck.cpp
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1//===--- AvoidNSErrorInitCheck.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
10#include "clang/AST/ASTContext.h"
11#include "clang/ASTMatchers/ASTMatchFinder.h"
12
13using namespace clang::ast_matchers;
14
15namespace clang::tidy::objc {
16
17void AvoidNSErrorInitCheck::registerMatchers(MatchFinder *Finder) {
18 Finder->addMatcher(objcMessageExpr(hasSelector("init"),
19 hasReceiverType(asString("NSError *")))
20 .bind("nserrorInit"),
21 this);
22}
23
24void AvoidNSErrorInitCheck::check(const MatchFinder::MatchResult &Result) {
25 const auto *MatchedExpr =
26 Result.Nodes.getNodeAs<ObjCMessageExpr>("nserrorInit");
27 diag(MatchedExpr->getBeginLoc(),
28 "use errorWithDomain:code:userInfo: or initWithDomain:code:userInfo: to "
29 "create a new NSError");
30}
31
32} // namespace clang::tidy::objc
DiagnosticBuilder diag(SourceLocation Loc, StringRef Description, DiagnosticIDs::Level Level=DiagnosticIDs::Warning)
Add a diagnostic with the check's name.
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.