gecko-dev/build/clang-plugin/NoAddRefReleaseOnReturnChecker.cpp
Sylvestre Ledru 0d4a611a04 Bug 1410472 - clang-plugin follows the LLVM coding style for real r=mystor
MozReview-Commit-ID: AXrQEjWzxvg

--HG--
extra : rebase_source : bf972fbb22648af2edbb756eb899ebddf8444dbc
2017-10-20 19:11:50 +02:00

33 lines
1.3 KiB
C++

/* 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 "NoAddRefReleaseOnReturnChecker.h"
#include "CustomMatchers.h"
void NoAddRefReleaseOnReturnChecker::registerMatchers(MatchFinder *AstMatcher) {
// Look for all of the calls to AddRef() or Release()
AstMatcher->addMatcher(
memberExpr(isAddRefOrRelease(), hasParent(callExpr())).bind("member"),
this);
}
void NoAddRefReleaseOnReturnChecker::check(
const MatchFinder::MatchResult &Result) {
const MemberExpr *Member = Result.Nodes.getNodeAs<MemberExpr>("member");
const Expr *Base = IgnoreTrivials(Member->getBase());
// Check if the call to AddRef() or Release() was made on the result of a call
// to a MOZ_NO_ADDREF_RELEASE_ON_RETURN function or method.
if (auto *Call = dyn_cast<CallExpr>(Base)) {
if (auto *Callee = Call->getDirectCallee()) {
if (hasCustomAnnotation(Callee, "moz_no_addref_release_on_return")) {
diag(Call->getLocStart(),
"%1 cannot be called on the return value of %0",
DiagnosticIDs::Error)
<< Callee << dyn_cast<CXXMethodDecl>(Member->getMemberDecl());
}
}
}
}