mirror of
https://github.com/matrix-construct/construct
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46 lines
1.7 KiB
C++
46 lines
1.7 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) 2016-2019 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_ROOM_STATE_HISTORY_H
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/// Interface to the state of a room at some previous point in time. This is
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/// constructed out of the data obtained through the lower-level state::space
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/// interface.
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///
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struct ircd::m::room::state::history
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{
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using closure = std::function<bool (const string_view &, const string_view &, const int64_t &, const event::idx &)>;
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state::space space;
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event::idx event_idx {0};
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int64_t bound {-1};
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public:
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bool for_each(const string_view &type, const string_view &state_key, const closure &) const;
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bool for_each(const string_view &type, const closure &) const;
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bool for_each(const closure &) const;
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size_t count(const string_view &type, const string_view &state_key) const;
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size_t count(const string_view &type) const;
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bool has(const string_view &type, const string_view &state_key) const;
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bool has(const string_view &type) const;
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event::idx get(std::nothrow_t, const string_view &type, const string_view &state_key) const;
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event::idx get(const string_view &type, const string_view &state_key) const;
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bool prefetch(const string_view &type, const string_view &state_key) const;
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bool prefetch(const string_view &type) const;
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history(const m::room &, const int64_t &bound);
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history(const m::room::id &, const m::event::id &);
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history(const m::room &);
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};
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