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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/functional/callback_internal.h"
#include "base/check.h"
#include "base/notreached.h"
namespace base {
namespace internal {
namespace {
bool QueryCancellationTraitsForNonCancellables(
const BindStateBase*,
BindStateBase::CancellationQueryMode mode) {
switch (mode) {
case BindStateBase::IS_CANCELLED:
return false;
case BindStateBase::MAYBE_VALID:
return true;
}
NOTREACHED();
}
} // namespace
void BindStateBaseRefCountTraits::Destruct(const BindStateBase* bind_state) {
bind_state->destructor_(bind_state);
}
BindStateBase::BindStateBase(InvokeFuncStorage polymorphic_invoke,
void (*destructor)(const BindStateBase*))
: BindStateBase(polymorphic_invoke,
destructor,
&QueryCancellationTraitsForNonCancellables) {}
BindStateBase::BindStateBase(
InvokeFuncStorage polymorphic_invoke,
void (*destructor)(const BindStateBase*),
bool (*query_cancellation_traits)(const BindStateBase*,
CancellationQueryMode))
: polymorphic_invoke_(polymorphic_invoke),
destructor_(destructor),
query_cancellation_traits_(query_cancellation_traits) {}
BindStateHolder& BindStateHolder::operator=(BindStateHolder&&) noexcept =
default;
BindStateHolder::BindStateHolder(const BindStateHolder&) = default;
BindStateHolder& BindStateHolder::operator=(const BindStateHolder&) = default;
BindStateHolder::~BindStateHolder() = default;
void BindStateHolder::Reset() {
bind_state_ = nullptr;
}
bool BindStateHolder::IsCancelled() const {
DCHECK(bind_state_);
return bind_state_->IsCancelled();
}
bool BindStateHolder::MaybeValid() const {
DCHECK(bind_state_);
return bind_state_->MaybeValid();
}
} // namespace internal
} // namespace base