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Force type-correct hooks, renamed proc macro

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This commit is contained in:
Joshua Barretto 2020-12-12 13:22:51 +00:00
parent 780f54ac90
commit 2743825181
2 changed files with 10 additions and 5 deletions
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11
plugin/derive/src/lib.rs
View File

@ -5,7 +5,7 @@ use quote::quote;
use syn::{parse_macro_input, ItemFn};
#[proc_macro_attribute]
pub fn export_function(_args: TokenStream, item: TokenStream) -> TokenStream {
pub fn event_handler(_args: TokenStream, item: TokenStream) -> TokenStream {
let parsed = parse_macro_input!(item as ItemFn);
let fn_body = parsed.block; // function body
let sig = parsed.sig; // function signature
@ -16,11 +16,16 @@ pub fn export_function(_args: TokenStream, item: TokenStream) -> TokenStream {
let out: proc_macro2::TokenStream = quote! {
#[no_mangle]
pub fn #fn_name(intern__ptr: i32, intern__len: u32) -> i32 {
let input = plugin_rt::read_input(intern__ptr,intern__len).unwrap();
let input = ::plugin_rt::read_input(intern__ptr,intern__len).unwrap();
#[inline]
fn inner(#fn_args) #fn_return {
#fn_body
}
plugin_rt::write_output(&inner(input))
// Artificially force the event handler to be type-correct
fn force_event<E: ::plugin_rt::api::Event>(event: E, inner: fn(E) -> E::Response) -> E::Response {
inner(event)
}
::plugin_rt::write_output(&force_event(input, inner))
}
};
out.into()

4
plugin/hello/src/lib.rs
View File

@ -3,13 +3,13 @@ pub extern crate plugin_rt;
use plugin_rt::*;
use plugin_api::{Action, events::*};
#[export_function]
#[event_handler]
pub fn on_load(load: PluginLoadEvent) -> () {
send_actions(vec![Action::Print("This is a test".to_owned())]);
println!("Hello world");
}
#[export_function]
#[event_handler]
pub fn on_player_join(input: PlayerJoinEvent) -> PlayerJoinResult {
send_actions(vec![Action::PlayerSendMessage(input.player_id,format!("Welcome {} on our server",input.player_name))]);
if input.player_name == "Cheater123" {