86 lines
1.8 KiB
C++
86 lines
1.8 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#pragma once
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#include <rpl/producer.h>
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#include <vector>
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namespace rpl {
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template <typename Value>
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inline auto single(Value &&value) {
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return make_producer<std::decay_t<Value>>([
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value = std::forward<Value>(value)
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](const auto &consumer) mutable {
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consumer.put_next(std::move(value));
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consumer.put_done();
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return lifetime();
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});
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}
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inline auto single() {
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return make_producer<>([](const auto &consumer) {
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consumer.put_next({});
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consumer.put_done();
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return lifetime();
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});
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}
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template <typename Value>
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inline auto vector(std::vector<Value> &&values) {
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return make_producer<Value>([
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values = std::move(values)
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](const auto &consumer) mutable {
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for (auto &value : values) {
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consumer.put_next(std::move(value));
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}
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consumer.put_done();
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return lifetime();
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});
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}
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inline auto vector(std::vector<bool> &&values) {
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return make_producer<bool>([
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values = std::move(values)
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](const auto &consumer) {
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for (auto value : values) {
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consumer.put_next_copy(value);
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}
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consumer.put_done();
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return lifetime();
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});
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}
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template <
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typename Range,
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typename Value = std::decay_t<
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decltype(*std::begin(std::declval<Range>()))>>
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inline auto range(Range &&range) {
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return vector(std::vector<Value>(
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std::begin(range),
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std::end(range)));
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}
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inline auto ints(int from, int till) {
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Expects(from <= till);
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return make_producer<int>([from, till](const auto &consumer) {
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for (auto i = from; i != till; ++i) {
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consumer.put_next_copy(i);
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}
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consumer.put_done();
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return lifetime();
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});
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}
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inline auto ints(int count) {
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return ints(0, count);
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}
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} // namespace rpl
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