cove/cove-core/src/macros.rs

104 lines
2.8 KiB
Rust

// Use `pub(crate) use <macro_name>` to make a macro importable from elsewhere.
// See https://stackoverflow.com/a/31749071
macro_rules! id_alias {
($name:ident) => {
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Deserialize, Serialize)]
pub struct $name(Id);
impl $name {
pub fn of(str: &str) -> Self {
Self(Id::of(str))
}
}
impl fmt::Display for $name {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.0.fmt(f)
}
}
};
}
pub(crate) use id_alias;
macro_rules! packets {
(
$( cmd $cmdName:ident($cmd:ident, $rpl:ident), )* // Commands with reply
$( ntf $ntfName:ident($ntf:ident), )* // Notifications
) => {
#[derive(Debug, Deserialize, Serialize)]
#[serde(tag = "name", content = "data")]
pub enum Cmd {
$( $cmdName($cmd), )*
}
$(
impl std::convert::TryFrom<Cmd> for $cmd {
type Error = ();
fn try_from(cmd: Cmd) -> Result<Self, Self::Error> {
match cmd {
Cmd::$cmdName(val) => Ok(val),
_ => Err(()),
}
}
}
impl From<$cmd> for Cmd {
fn from(cmd: $cmd) -> Self {
Self::$cmdName(cmd)
}
}
)*
#[derive(Debug, Deserialize, Serialize)]
#[serde(tag = "name", content = "data")]
pub enum Rpl {
$( $cmdName($rpl), )*
}
$(
impl std::convert::TryFrom<Rpl> for $rpl {
type Error = ();
fn try_from(rpl: Rpl) -> Result<Self, Self::Error> {
match rpl {
Rpl::$cmdName(val) => Ok(val),
_ => Err(()),
}
}
}
impl From<$rpl> for Rpl {
fn from(rpl: $rpl) -> Self {
Self::$cmdName(rpl)
}
}
)*
#[derive(Debug, Deserialize, Serialize)]
#[serde(tag = "name", content = "data")]
pub enum Ntf {
$( $ntfName($ntf), )*
}
$(
impl std::convert::TryFrom<Ntf> for $ntf {
type Error = ();
fn try_from(ntf: Ntf) -> Result<Self, Self::Error> {
match ntf {
Ntf::$ntfName(val) => Ok(val),
_ => Err(()),
}
}
}
impl From<$ntf> for Ntf {
fn from(ntf: $ntf) -> Self {
Self::$ntfName(ntf)
}
}
)*
};
}
pub(crate) use packets;