Struct matrix_sdk_base::ruma::EventId

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pub struct EventId(/* private fields */);
Expand description

A Matrix event ID.

An EventId is generated randomly or converted from a string slice, and can be converted back into a string as needed.

§Room versions

Matrix specifies multiple room versions and the format of event identifiers differ between them. The original format used by room versions 1 and 2 uses a short pseudorandom “localpart” followed by the hostname and port of the originating homeserver. Later room versions change event identifiers to be a hash of the event encoded with Base64. Some of the methods provided by EventId are only relevant to the original event format.

// Original format
assert_eq!(<&EventId>::try_from("$h29iv0s8:example.com").unwrap(), "$h29iv0s8:example.com");
// Room version 3 format
assert_eq!(
    <&EventId>::try_from("$acR1l0raoZnm60CBwAVgqbZqoO/mYU81xysh1u7XcJk").unwrap(),
    "$acR1l0raoZnm60CBwAVgqbZqoO/mYU81xysh1u7XcJk"
);
// Room version 4 format
assert_eq!(
    <&EventId>::try_from("$Rqnc-F-dvnEYJTyHq_iKxU2bZ1CI92-kuZq3a5lr5Zg").unwrap(),
    "$Rqnc-F-dvnEYJTyHq_iKxU2bZ1CI92-kuZq3a5lr5Zg"
);

Implementations§

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impl EventId

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pub fn as_str(&self) -> &str

Creates a string slice from this EventId.

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pub fn as_bytes(&self) -> &[u8]

Creates a byte slice from this EventId.

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impl EventId

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pub fn parse(s: impl AsRef<str>) -> Result<OwnedEventId, Error>

Try parsing a &str into an OwnedEventId.

The same can also be done using FromStr, TryFrom or TryInto. This function is simply more constrained and thus useful in generic contexts.

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pub fn parse_box( s: impl AsRef<str> + Into<Box<str>>, ) -> Result<Box<EventId>, Error>

Try parsing a &str into a Box<EventId>.

The same can also be done using FromStr, TryFrom or TryInto. This function is simply more constrained and thus useful in generic contexts.

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pub fn parse_rc( s: impl AsRef<str> + Into<Rc<str>>, ) -> Result<Rc<EventId>, Error>

Try parsing a &str into an Rc<EventId>.

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pub fn parse_arc( s: impl AsRef<str> + Into<Arc<str>>, ) -> Result<Arc<EventId>, Error>

Try parsing a &str into an Arc<EventId>.

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impl EventId

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pub fn new(server_name: &ServerName) -> OwnedEventId

Attempts to generate an EventId for the given origin server with a localpart consisting of 18 random ASCII characters.

This should only be used for events in the original format as used by Matrix room versions 1 and 2.

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pub fn localpart(&self) -> &str

Returns the event’s unique ID.

For the original event format as used by Matrix room versions 1 and 2, this is the “localpart” that precedes the homeserver. For later formats, this is the entire ID without the leading $ sigil.

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pub fn server_name(&self) -> Option<&ServerName>

Returns the server name of the event ID.

Only applicable to events in the original format as used by Matrix room versions 1 and 2.

Trait Implementations§

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impl AsRef<[u8]> for EventId

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fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<EventId> for EventId

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fn as_ref(&self) -> &EventId

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<EventId> for OwnedEventId

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fn as_ref(&self) -> &EventId

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<str> for EventId

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fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.
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impl Borrow<EventId> for OwnedEventId

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fn borrow(&self) -> &EventId

Immutably borrows from an owned value. Read more
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impl Clone for Box<EventId>

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fn clone(&self) -> Box<EventId>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for EventId

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for Box<EventId>

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fn deserialize<D>( deserializer: D, ) -> Result<Box<EventId>, <D as Deserializer<'de>>::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Display for EventId

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl From<&EventId> for Arc<EventId>

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fn from(s: &EventId) -> Arc<EventId>

Converts to this type from the input type.
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impl From<&EventId> for Box<EventId>

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fn from(id: &EventId) -> Box<EventId>

Converts to this type from the input type.
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impl From<&EventId> for OwnedEventId

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fn from(id: &EventId) -> OwnedEventId

Converts to this type from the input type.
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impl From<&EventId> for Rc<EventId>

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fn from(s: &EventId) -> Rc<EventId>

Converts to this type from the input type.
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impl From<&EventId> for String

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fn from(id: &EventId) -> String

Converts to this type from the input type.
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impl From<OwnedEventId> for Box<EventId>

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fn from(a: OwnedEventId) -> Box<EventId>

Converts to this type from the input type.
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impl Hash for EventId

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fn hash<__H>(&self, state: &mut __H)
where __H: Hasher,

Feeds this value into the given Hasher. Read more
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impl Ord for EventId

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fn cmp(&self, other: &EventId) -> Ordering

This method returns an Ordering between self and other. Read more
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impl PartialEq<&EventId> for OwnedEventId

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fn eq(&self, other: &&EventId) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<&str> for EventId

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fn eq(&self, other: &&str) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<Box<EventId>> for &EventId

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fn eq(&self, other: &Box<EventId>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<Box<EventId>> for EventId

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fn eq(&self, other: &Box<EventId>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<EventId> for &str

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fn eq(&self, other: &EventId) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<EventId> for OwnedEventId

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fn eq(&self, other: &EventId) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<EventId> for str

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fn eq(&self, other: &EventId) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<OwnedEventId> for &EventId

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fn eq(&self, other: &OwnedEventId) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<OwnedEventId> for EventId

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fn eq(&self, other: &OwnedEventId) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<String> for EventId

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fn eq(&self, other: &String) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<str> for EventId

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fn eq(&self, other: &str) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq for EventId

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fn eq(&self, other: &EventId) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for EventId

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fn partial_cmp(&self, other: &EventId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Serialize for EventId

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fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl ToOwned for EventId

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type Owned = OwnedEventId

The resulting type after obtaining ownership.
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fn to_owned(&self) -> <EventId as ToOwned>::Owned

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut Self::Owned)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<'a> TryFrom<&'a str> for &'a EventId

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from( s: &'a str, ) -> Result<&'a EventId, <&'a EventId as TryFrom<&'a str>>::Error>

Performs the conversion.
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impl TryFrom<&str> for Box<EventId>

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from( s: &str, ) -> Result<Box<EventId>, <Box<EventId> as TryFrom<&str>>::Error>

Performs the conversion.
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impl TryFrom<String> for Box<EventId>

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from( s: String, ) -> Result<Box<EventId>, <Box<EventId> as TryFrom<String>>::Error>

Performs the conversion.
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impl Eq for EventId

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impl StructuralPartialEq for EventId

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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fn compare(&self, key: &K) -> Ordering

Compare self to key and return their ordering.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T, W> HasTypeWitness<W> for T
where W: MakeTypeWitness<Arg = T>, T: ?Sized,

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const WITNESS: W = W::MAKE

A constant of the type witness
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impl<T> Identity for T
where T: ?Sized,

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type Type = T

The same type as Self, used to emulate type equality bounds (T == U) with associated type equality constraints (T: Identity<Type = U>).
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const TYPE_EQ: TypeEq<T, <T as Identity>::Type> = TypeEq::NEW

Proof that Self is the same type as Self::Type, provides methods for casting between Self and Self::Type.
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more