mirror of
https://github.com/matrix-construct/construct
synced 2024-11-16 23:10:54 +01:00
39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_M_EVENTS_H
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namespace ircd::m::events
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{
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struct range;
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using closure_bool = std::function<bool (const event::idx &, const event &)>;
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bool for_each(const range &, const closure_bool &);
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bool for_each(const range &, const event_filter &, const closure_bool &);
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}
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/// Range to start (inclusive) and stop (exclusive). If start is greater than
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/// stop a reverse iteration will occur. -1 (or unsigned max value) can be used
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/// to start or stop at the end. 0 can be used to start or stop at the beginning.
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/// (event::idx of 0 is a sentinel)
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///
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struct ircd::m::events::range
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:std::pair<event::idx, event::idx>
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{
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const event::fetch::opts *fopts {nullptr};
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range(const event::idx &start,
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const event::idx &stop = -1,
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const event::fetch::opts *const &fopts = nullptr)
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:std::pair<event::idx, event::idx>{start, stop}
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,fopts{fopts}
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{}
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};
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