45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
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// Copyright (c) Facebook, Inc. and its affiliates.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "yarpl/flowable/Flowables.h"
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namespace yarpl {
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namespace flowable {
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std::shared_ptr<Flowable<int64_t>> Flowable<>::range(
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int64_t start,
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int64_t count) {
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auto lambda = [start, count, i = start](
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Subscriber<int64_t>& subscriber,
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int64_t requested) mutable {
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int64_t end = start + count;
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while (i < end && requested-- > 0) {
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subscriber.onNext(i++);
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}
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if (i >= end) {
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// TODO T27302402: Even though having two subscriptions exist concurrently
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// for Emitters is not possible still. At least it possible to resubscribe
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// and consume the same values again.
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i = start;
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subscriber.onComplete();
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}
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};
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return Flowable<int64_t>::create(std::move(lambda));
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}
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} // namespace flowable
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} // namespace yarpl
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