118 lines
2.1 KiB
C++
118 lines
2.1 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) 2016-2023 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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size_t
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ircd::m::room::missing::count()
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const
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{
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size_t ret{0};
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for_each([&ret]
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(const auto &event_id, const auto &depth, const auto &event_idx) noexcept
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{
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++ret;
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return true;
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});
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return ret;
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}
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bool
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ircd::m::room::missing::for_each(const closure &closure)
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const
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{
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return for_each({0L, 0L}, closure);
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}
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bool
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ircd::m::room::missing::for_each(const pair<int64_t> &depth,
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const closure &closure)
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const
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{
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room::events it
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{
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room, uint64_t(depth.first)
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};
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m::event::fetch event;
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for(; it; ++it)
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{
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if(depth.second && int64_t(it.depth()) > depth.second)
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break;
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if(!_each(it, event, closure))
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return false;
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}
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return true;
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}
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bool
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ircd::m::room::missing::rfor_each(const pair<int64_t> &depth,
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const closure &closure)
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const
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{
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room::events it
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{
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room, depth.second?: -1UL
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};
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m::event::fetch event;
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for(; it; --it)
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{
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if(depth.second && int64_t(it.depth()) > depth.second)
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continue;
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if(int64_t(it.depth()) < depth.first)
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break;
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if(!_each(it, event, closure))
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return false;
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}
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return true;
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}
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bool
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ircd::m::room::missing::_each(m::room::events &it,
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m::event::fetch &event,
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const closure &closure)
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const
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{
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const auto &[depth, event_idx]
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{
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*it
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};
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if(!seek(std::nothrow, event, event_idx))
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return true;
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const event::prev prev
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{
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event
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};
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event::idx idx_buf[event::prev::MAX];
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const auto prev_idx
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{
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prev.idxs(idx_buf)
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};
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for(size_t i(0); i < prev_idx.size(); ++i)
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{
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if(prev_idx[i])
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continue;
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if(!closure(prev.prev_event(i), depth, event_idx))
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return false;
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}
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return true;
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}
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