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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "RefCountedCopyConstructorChecker.h"
#include "CustomMatchers.h"
void RefCountedCopyConstructorChecker::registerMatchers(
MatchFinder *AstMatcher) {
AstMatcher->addMatcher(
cxxConstructExpr(
hasDeclaration(cxxConstructorDecl(isCompilerProvidedCopyConstructor(),
ofClass(hasRefCntMember()))))
.bind("node"),
this);
}
void RefCountedCopyConstructorChecker::check(
const MatchFinder::MatchResult &Result) {
const char *Error =
"Invalid use of compiler-provided copy constructor on refcounted type";
const char *Note = "The default copy constructor also copies the "
"default mRefCnt property, leading to reference "
"count imbalance issues. Please provide your own "
"copy constructor which only copies the fields which "
"need to be copied";
// Everything we needed to know was checked in the matcher - we just report
// the error here
const CXXConstructExpr *E = Result.Nodes.getNodeAs<CXXConstructExpr>("node");
diag(E->getLocation(), Error, DiagnosticIDs::Error);
diag(E->getLocation(), Note, DiagnosticIDs::Note);
}