clang-tools  11.0.0
DeallocInCategoryCheck.cpp
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1 //===--- DeallocInCategoryCheck.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/AST/DeclObjC.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 DeallocInCategoryCheck::registerMatchers(MatchFinder *Finder) {
21  // Non-NSObject/NSProxy-derived objects may not have -dealloc as a special
22  // method. However, it seems highly unrealistic to expect many false-positives
23  // by warning on -dealloc in categories on classes without one of those
24  // base classes.
25  Finder->addMatcher(
26  objcMethodDecl(isInstanceMethod(), hasName("dealloc"),
27  hasDeclContext(objcCategoryImplDecl().bind("impl")))
28  .bind("dealloc"),
29  this);
30 }
31 
32 void DeallocInCategoryCheck::check(const MatchFinder::MatchResult &Result) {
33  const auto *DeallocDecl = Result.Nodes.getNodeAs<ObjCMethodDecl>("dealloc");
34  const auto *CID = Result.Nodes.getNodeAs<ObjCCategoryImplDecl>("impl");
35  assert(DeallocDecl != nullptr);
36  diag(DeallocDecl->getLocation(), "category %0 should not implement -dealloc")
37  << CID;
38 }
39 
40 } // namespace objc
41 } // namespace tidy
42 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:14
DeallocInCategoryCheck.h
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27