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use std::fmt::{Display, Formatter};
use bincode::{Decode, Encode};
use paste::paste;
pub trait RequestDefinition: Encode {
type Response: ResponseDefinition;
fn into_request(self) -> IPCRequest;
}
pub trait ResponseDefinition: Sized + Decode {
type Error: std::error::Error;
fn from_response(response: IPCResponse) -> Option<Result<Self, Self::Error>>;
fn into_response(self) -> IPCResponse;
}
macro_rules! define {
($(@$name:ident { $($req_n:ident: $req_t:ty),* } => { $($resp_n:ident: $resp_t:ty)* } | $($error:ident),*)*) => {
$(
paste! {
#[derive(Encode, Decode)]
pub struct [<$name Request>] { $(pub $req_n: $req_t),* }
impl RequestDefinition for [<$name Request>] {
type Response = [<$name Response>];
fn into_request(self) -> IPCRequest {
IPCRequest::$name(self)
}
}
#[derive(Encode, Decode)]
pub struct [<$name Response>] { $(pub $resp_n: $resp_t),* }
impl ResponseDefinition for [<$name Response>] {
type Error = [<$name Error>];
fn from_response(response: IPCResponse) -> Option<Result<Self, Self::Error>> {
match response {
IPCResponse::$name(inner) => Some(inner),
_ => None,
}
}
fn into_response(self) -> IPCResponse {
IPCResponse::$name(Ok(self))
}
}
#[derive(Encode, Decode, Debug)]
pub enum [<$name Error>] {
$($error,)*
}
impl Display for [<$name Error>] {
#[allow(unused)]
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
match *self {
$(Self::$error => f.write_str(stringify!($error)),)*
}
}
}
impl std::error::Error for [<$name Error>] {}
}
)*
#[derive(Encode, Decode)]
pub enum IPCRequest {
$(
$name(paste!([<$name Request>])),
)*
}
#[derive(Encode, Decode)]
pub enum IPCResponse {
$(
$name(Result<paste!([<$name Response>]), paste!([<$name Error>])>),
)*
}
};
}
define! {
@ListAccounts {} => { names: Vec<String> } |
@GetAccount { name: String } => { scopes: Vec<String> } | NotFound
@DeleteAccount { name: String } => {} |
@CreateInvite {} => { link: String } |
@UpdateScopes { account: String, scopes: Vec<String> } => {} | NotFound
}
|
