clang-tools 10.0.0

AvoidThrowingObjCExceptionCheck.cpp
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1 //===--- AvoidThrowingObjCExceptionCheck.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 "AvoidThrowingObjCExceptionCheck.h"
10 #include "clang/AST/ASTContext.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12
13 using namespace clang::ast_matchers;
14
15 namespace clang {
16 namespace tidy {
17 namespace google {
18 namespace objc {
19
20 void AvoidThrowingObjCExceptionCheck::registerMatchers(MatchFinder *Finder) {
21 // this check should only be applied to ObjC sources.
22 if (!getLangOpts().ObjC)
23 return;
24
25 Finder->addMatcher(objcThrowStmt().bind("throwStmt"), this);
26 Finder->addMatcher(
27 objcMessageExpr(anyOf(hasSelector("raise:format:"),
28 hasSelector("raise:format:arguments:")),
29 hasReceiverType(asString("NSException")))
30 .bind("raiseException"),
31 this);
32 }
33
34 void AvoidThrowingObjCExceptionCheck::check(
35 const MatchFinder::MatchResult &Result) {
36 const auto *MatchedStmt =
37 Result.Nodes.getNodeAs<ObjCAtThrowStmt>("throwStmt");
38 const auto *MatchedExpr =
39 Result.Nodes.getNodeAs<ObjCMessageExpr>("raiseException");
40 auto SourceLoc = MatchedStmt == nullptr ? MatchedExpr->getSelectorStartLoc()
41 : MatchedStmt->getThrowLoc();
42 diag(SourceLoc,
43 "pass in NSError ** instead of throwing exception to indicate "
44 "Objective-C errors");
45 }
46
47 } // namespace objc
48 } // namespace google
49 } // namespace tidy
50 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:14
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27
AvoidThrowingObjCExceptionCheck.h