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//===--- DeallocInCategoryCheck.cpp - clang-tidy -------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "DeallocInCategoryCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclObjC.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
using namespace clang::ast_matchers;
namespace clang::tidy::objc {
void DeallocInCategoryCheck::registerMatchers(MatchFinder *Finder) {
// Non-NSObject/NSProxy-derived objects may not have -dealloc as a special
// method. However, it seems highly unrealistic to expect many false-positives
// by warning on -dealloc in categories on classes without one of those
// base classes.
Finder->addMatcher(
objcMethodDecl(isInstanceMethod(), hasName("dealloc"),
hasDeclContext(objcCategoryImplDecl().bind("impl")))
.bind("dealloc"),
this);
}
void DeallocInCategoryCheck::check(const MatchFinder::MatchResult &Result) {
const auto *DeallocDecl = Result.Nodes.getNodeAs<ObjCMethodDecl>("dealloc");
const auto *CID = Result.Nodes.getNodeAs<ObjCCategoryImplDecl>("impl");
assert(DeallocDecl != nullptr);
diag(DeallocDecl->getLocation(), "category %0 should not implement -dealloc")
<< CID;
}
} // namespace clang::tidy::objc
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