136 lines
3.3 KiB
Rust
136 lines
3.3 KiB
Rust
use std::{
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borrow::Borrow,
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fmt::{Debug, Display},
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hash::Hash,
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sync::Arc,
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};
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use ruma_common::{EventId, MilliSecondsSinceUnixEpoch, RoomId, UserId};
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use ruma_events::TimelineEventType;
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use serde_json::value::RawValue as RawJsonValue;
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/// Abstraction of a PDU so users can have their own PDU types.
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pub trait Event {
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type Id: Clone + Debug + Display + Eq + Ord + Hash + Send + Borrow<EventId>;
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/// The `EventId` of this event.
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fn event_id(&self) -> &Self::Id;
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/// The `RoomId` of this event.
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fn room_id(&self) -> &RoomId;
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/// The `UserId` of this event.
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fn sender(&self) -> &UserId;
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/// The time of creation on the originating server.
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fn origin_server_ts(&self) -> MilliSecondsSinceUnixEpoch;
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/// The event type.
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fn event_type(&self) -> &TimelineEventType;
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/// The event's content.
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fn content(&self) -> &RawJsonValue;
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/// The state key for this event.
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fn state_key(&self) -> Option<&str>;
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/// The events before this event.
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// Requires GATs to avoid boxing (and TAIT for making it convenient).
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fn prev_events(&self) -> impl DoubleEndedIterator<Item = &Self::Id> + Send + '_;
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/// All the authenticating events for this event.
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// Requires GATs to avoid boxing (and TAIT for making it convenient).
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fn auth_events(&self) -> impl DoubleEndedIterator<Item = &Self::Id> + Send + '_;
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/// If this event is a redaction event this is the event it redacts.
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fn redacts(&self) -> Option<&Self::Id>;
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}
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impl<T: Event> Event for &T {
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type Id = T::Id;
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fn event_id(&self) -> &Self::Id {
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(*self).event_id()
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}
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fn room_id(&self) -> &RoomId {
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(*self).room_id()
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}
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fn sender(&self) -> &UserId {
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(*self).sender()
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}
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fn origin_server_ts(&self) -> MilliSecondsSinceUnixEpoch {
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(*self).origin_server_ts()
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}
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fn event_type(&self) -> &TimelineEventType {
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(*self).event_type()
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}
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fn content(&self) -> &RawJsonValue {
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(*self).content()
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}
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fn state_key(&self) -> Option<&str> {
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(*self).state_key()
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}
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fn prev_events(&self) -> impl DoubleEndedIterator<Item = &Self::Id> + Send + '_ {
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(*self).prev_events()
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}
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fn auth_events(&self) -> impl DoubleEndedIterator<Item = &Self::Id> + Send + '_ {
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(*self).auth_events()
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}
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fn redacts(&self) -> Option<&Self::Id> {
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(*self).redacts()
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}
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}
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impl<T: Event> Event for Arc<T> {
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type Id = T::Id;
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fn event_id(&self) -> &Self::Id {
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(**self).event_id()
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}
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fn room_id(&self) -> &RoomId {
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(**self).room_id()
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}
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fn sender(&self) -> &UserId {
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(**self).sender()
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}
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fn origin_server_ts(&self) -> MilliSecondsSinceUnixEpoch {
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(**self).origin_server_ts()
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}
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fn event_type(&self) -> &TimelineEventType {
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(**self).event_type()
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}
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fn content(&self) -> &RawJsonValue {
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(**self).content()
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}
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fn state_key(&self) -> Option<&str> {
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(**self).state_key()
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}
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fn prev_events(&self) -> impl DoubleEndedIterator<Item = &Self::Id> + Send + '_ {
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(**self).prev_events()
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}
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fn auth_events(&self) -> impl DoubleEndedIterator<Item = &Self::Id> + Send + '_ {
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(**self).auth_events()
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}
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fn redacts(&self) -> Option<&Self::Id> {
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(**self).redacts()
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}
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}
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