clang-tools 8.0.0

AvoidNSErrorInitCheck.cpp
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1 //===--- AvoidNSErrorInitCheck.cpp - clang-tidy----------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "AvoidNSErrorInitCheck.h"
11 #include "clang/AST/ASTContext.h"
12 #include "clang/ASTMatchers/ASTMatchFinder.h"
13
14 using namespace clang::ast_matchers;
15
16 namespace clang {
17 namespace tidy {
18 namespace objc {
19
20 void AvoidNSErrorInitCheck::registerMatchers(MatchFinder *Finder) {
21 // this check should only be applied to ObjC sources.
22 if (!getLangOpts().ObjC)
23 return;
24
25 Finder->addMatcher(objcMessageExpr(hasSelector("init"),
26 hasReceiverType(asString("NSError *")))
27 .bind("nserrorInit"),
28 this);
29 }
30
31 void AvoidNSErrorInitCheck::check(const MatchFinder::MatchResult &Result) {
32 const auto *MatchedExpr =
33 Result.Nodes.getNodeAs<ObjCMessageExpr>("nserrorInit");
34 diag(MatchedExpr->getBeginLoc(),
35 "use errorWithDomain:code:userInfo: or initWithDomain:code:userInfo: to "
36 "create a new NSError");
37 }
38
39 } // namespace objc
40 } // namespace tidy
41 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:15
Result
llvm::Optional< llvm::Expected< tooling::AtomicChanges > > Result
Definition: ClangdServer.cpp:60
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ChangeNamespace.cpp:18
AvoidNSErrorInitCheck.h