clang-tools 6.0.0

AvoidThrowingObjCExceptionCheck.cpp
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1 //===--- AvoidThrowingObjCExceptionCheck.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 "AvoidThrowingObjCExceptionCheck.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 google {
19 namespace objc {
20
21 void AvoidThrowingObjCExceptionCheck::registerMatchers(MatchFinder *Finder) {
22 Finder->addMatcher(objcThrowStmt().bind("throwStmt"), this);
23 Finder->addMatcher(
24 objcMessageExpr(anyOf(hasSelector("raise:format:"),
25 hasSelector("raise:format:arguments:")),
26 hasReceiverType(asString("NSException")))
27 .bind("raiseException"),
28 this);
29 }
30
31 void AvoidThrowingObjCExceptionCheck::check(
32 const MatchFinder::MatchResult &Result) {
33 const auto *MatchedStmt =
34 Result.Nodes.getNodeAs<ObjCAtThrowStmt>("throwStmt");
35 const auto *MatchedExpr =
36 Result.Nodes.getNodeAs<ObjCMessageExpr>("raiseException");
37 auto SourceLoc = MatchedStmt == nullptr ? MatchedExpr->getSelectorStartLoc()
38 : MatchedStmt->getThrowLoc();
39 diag(SourceLoc,
40 "pass in NSError ** instead of throwing exception to indicate "
41 "Objective-C errors");
42 }
43
44 } // namespace objc
45 } // namespace google
46 } // namespace tidy
47 } // namespace clang
clang::ast_matchers
Definition: ClangTidyDiagnosticConsumer.h:27
clang
Definition: AndroidTidyModule.cpp:28
AvoidThrowingObjCExceptionCheck.h