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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "base/mac/scoped_nsexception_enabler.h"
#import "base/lazy_instance.h"
#import "base/threading/thread_local.h"
// To make the |g_exceptionsAllowed| declaration readable.
using base::LazyInstance;
using base::LeakyLazyInstanceTraits;
using base::ThreadLocalBoolean;
namespace {
// Whether to allow NSExceptions to be raised on the current thread.
LazyInstance<ThreadLocalBoolean, LeakyLazyInstanceTraits<ThreadLocalBoolean> >
g_exceptionsAllowed = LAZY_INSTANCE_INITIALIZER;
} // namespace
namespace base {
namespace mac {
bool GetNSExceptionsAllowed() {
return g_exceptionsAllowed.Get().Get();
}
void SetNSExceptionsAllowed(bool allowed) {
return g_exceptionsAllowed.Get().Set(allowed);
}
ScopedNSExceptionEnabler::ScopedNSExceptionEnabler() {
was_enabled_ = GetNSExceptionsAllowed();
SetNSExceptionsAllowed(true);
}
ScopedNSExceptionEnabler::~ScopedNSExceptionEnabler() {
SetNSExceptionsAllowed(was_enabled_);
}
} // namespace mac
} // namespace base
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