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jid: Better docs for those types
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xmppftw
Emmanuel Gil Peyrot
parent
5b6dcb6549
commit
c86f0118b7
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@ -10,9 +10,25 @@
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#![deny(missing_docs)]
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//! Provides a type for Jabber IDs.
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//! Represents XMPP addresses, also known as JabberIDs (JIDs) for the [XMPP](https://xmpp.org/)
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//! protocol. A [`Jid`] can have between one and three parts in the form `node@domain/resource`:
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//! - the (optional) node part designates a specific account/service on a server, for example
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//! `username@server.com`
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//! - the domain part designates a server, for example `irc.jabberfr.org`
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//! - the (optional) resource part designates a more specific client, such as a participant in a
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//! groupchat (`jabberfr@chat.jabberfr.org/user`) or a specific client device associated with an
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//! account (`user@example.com/dino`)
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//!
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//! For usage, check the documentation on the `Jid` struct.
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//! The [`Jid`] enum can be one of two variants, containing a more specific type:
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//! - [`BareJid`] (`Jid::Bare` variant): a JID without a resource
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//! - [`FullJid`] (`Jid::Full` variant): a JID with a resource
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//!
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//! Jids as per the XMPP protocol only ever contain valid UTF-8. However, creating any form of Jid
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//! can fail in one of the following cases:
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//! - wrong syntax: creating a Jid with an empty (yet declared) node or resource part, such as
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//! `@example.com` or `user@example.com/`
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//! - stringprep error: some characters were invalid according to the stringprep algorithm, such as
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//! mixing left-to-write and right-to-left characters
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use core::num::NonZeroU16;
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use std::convert::TryFrom;
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@ -34,10 +50,10 @@ use inner::InnerJid;
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#[cfg_attr(feature = "serde", serde(untagged))]
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#[derive(Debug, Clone, PartialEq, Eq, Hash)]
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pub enum Jid {
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/// Bare Jid
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/// Contains a [`BareJid`], without a resource part
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Bare(BareJid),
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/// Full Jid
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/// Contains a [`FullJid`], with a resource part
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Full(FullJid),
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}
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@ -71,9 +87,8 @@ impl fmt::Display for Jid {
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}
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impl Jid {
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/// Constructs a Jabber ID from a string.
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///
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/// This is of the form `node`@`domain`/`resource`.
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/// Constructs a Jabber ID from a string. This is of the form
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/// `node`@`domain`/`resource`, where node and resource parts are optional.
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///
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/// # Examples
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///
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@ -99,28 +114,28 @@ impl Jid {
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}
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}
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/// The node part of the Jabber ID, if it exists, else None.
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/// The optional node part of the JID.
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pub fn node(&self) -> Option<&str> {
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match self {
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Jid::Bare(BareJid { inner }) | Jid::Full(FullJid { inner }) => inner.node(),
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}
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}
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/// The domain of the Jabber ID.
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/// The domain part of the JID.
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pub fn domain(&self) -> &str {
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match self {
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Jid::Bare(BareJid { inner }) | Jid::Full(FullJid { inner }) => inner.domain(),
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}
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}
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/// The resource of the Jabber ID.
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/// The optional resource part of the JID.
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pub fn resource(&self) -> Option<&str> {
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match self {
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Jid::Bare(BareJid { inner }) | Jid::Full(FullJid { inner }) => inner.resource(),
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}
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}
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/// Extract a bare JID from this JID, throwing away the resource.
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/// Allocate a new [`BareJid`] from this JID, discarding the resource.
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pub fn to_bare(&self) -> BareJid {
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match self {
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Jid::Full(jid) => jid.to_bare(),
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@ -128,7 +143,7 @@ impl Jid {
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}
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}
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/// Transforms this JID into a bare JID, throwing away the resource.
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/// Transforms this JID into a [`BareJid`], throwing away the resource.
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pub fn into_bare(self) -> BareJid {
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match self {
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Jid::Full(jid) => jid.into_bare(),
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@ -184,30 +199,30 @@ impl PartialEq<BareJid> for Jid {
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}
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}
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/// A struct representing a full Jabber ID.
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/// A struct representing a full Jabber ID, with a resource part.
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///
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/// A full Jabber ID is composed of 3 components, of which one is optional:
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/// A full JID is composed of 3 components, of which only the node is optional:
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///
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/// - A node/name, `node`, which is the optional part before the @.
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/// - A domain, `domain`, which is the mandatory part after the @ but before the /.
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/// - A resource, `resource`, which is the part after the /.
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/// - the (optional) node part is the part before the (optional) `@`.
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/// - the domain part is the mandatory part between the (optional) `@` and before the `/`.
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/// - the resource part after the `/`.
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///
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/// Unlike a `BareJid`, it always contains a resource, and should only be used when you are certain
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/// there is no case where a resource can be missing. Otherwise, use a `Jid` enum.
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/// Unlike a [`BareJid`], it always contains a resource, and should only be used when you are
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/// certain there is no case where a resource can be missing. Otherwise, use a [`Jid`] or
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/// [`BareJid`].
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#[derive(Clone, PartialEq, Eq, Hash)]
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pub struct FullJid {
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inner: InnerJid,
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}
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/// A struct representing a bare Jabber ID.
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/// A struct representing a bare Jabber ID, without a resource part.
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///
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/// A bare Jabber ID is composed of 2 components, of which one is optional:
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/// A bare JID is composed of 2 components, of which only the node is optional:
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/// - the (optional) node part is the part before the (optional) `@`.
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/// - the domain part is the mandatory part between the (optional) `@` and before the `/`.
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///
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/// - A node/name, `node`, which is the optional part before the @.
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/// - A domain, `domain`, which is the mandatory part after the @.
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///
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/// Unlike a `FullJid`, it can’t contain a resource, and should only be used when you are certain
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/// there is no case where a resource can be set. Otherwise, use a `Jid` enum.
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/// Unlike a [`FullJid`], it can’t contain a resource, and should only be used when you are certain
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/// there is no case where a resource can be set. Otherwise, use a [`Jid`] or [`FullJid`].
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#[derive(Clone, PartialEq, Eq, Hash)]
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pub struct BareJid {
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inner: InnerJid,
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@ -288,9 +303,8 @@ impl<'de> Deserialize<'de> for BareJid {
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}
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impl FullJid {
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/// Constructs a full Jabber ID containing all three components.
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///
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/// This is of the form `node`@`domain`/`resource`.
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/// Constructs a full Jabber ID containing all three components. This is of the form
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/// `node@domain/resource`, where node part is optional.
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///
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/// # Examples
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///
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@ -316,22 +330,22 @@ impl FullJid {
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}
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}
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/// The node part of the Jabber ID, if it exists, else None.
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/// The optional node part of the JID.
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pub fn node(&self) -> Option<&str> {
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self.inner.node()
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}
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/// The domain part of the Jabber ID.
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/// The domain part of the JID.
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pub fn domain(&self) -> &str {
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self.inner.domain()
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}
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/// The resource of the Jabber ID. Since this is a full JID it is always present.
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/// The optional resource of the Jabber ID. Since this is a full JID it is always present.
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pub fn resource(&self) -> &str {
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self.inner.resource().unwrap()
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}
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/// Extract a bare JID from this full JID, throwing away the resource.
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/// Allocate a new [`BareJid`] from this full JID, discarding the resource.
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pub fn to_bare(&self) -> BareJid {
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let slash = self.inner.slash.unwrap().get() as usize;
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let normalized = self.inner.normalized[..slash].to_string();
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@ -343,7 +357,7 @@ impl FullJid {
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BareJid { inner }
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}
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/// Transforms this full JID into a bare JID, throwing away the resource.
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/// Transforms this full JID into a [`BareJid`], discarding the resource.
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pub fn into_bare(mut self) -> BareJid {
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let slash = self.inner.slash.unwrap().get() as usize;
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self.inner.normalized.truncate(slash);
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@ -362,9 +376,8 @@ impl FromStr for BareJid {
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}
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impl BareJid {
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/// Constructs a bare Jabber ID, containing two components.
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///
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/// This is of the form `node`@`domain`.
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/// Constructs a bare Jabber ID, containing two components. This is of the form
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/// `node`@`domain`, where node part is optional.
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///
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/// # Examples
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///
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@ -389,17 +402,17 @@ impl BareJid {
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}
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}
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/// The node part of the Jabber ID, if it exists, else None.
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/// The optional node part of the JID.
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pub fn node(&self) -> Option<&str> {
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self.inner.node()
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}
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/// The domain part of the Jabber ID.
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/// The domain part of the JID.
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pub fn domain(&self) -> &str {
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self.inner.domain()
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}
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/// Constructs a full Jabber ID from a bare Jabber ID, specifying a `resource`.
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/// Constructs a [`FullJid`] from the bare JID, by specifying a `resource`.
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///
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/// # Examples
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///
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