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Get JSON LSP running, still work to be done

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This commit is contained in:
Isaac Clayton 2022-06-06 16:02:54 +02:00
parent 38d7321511
commit fbaff615a3
7 changed files with 269 additions and 88 deletions
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26
crates/plugin_macros/src/lib.rs
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@ -2,7 +2,7 @@ use core::panic;
use proc_macro::TokenStream;
use quote::{format_ident, quote};
use syn::{parse_macro_input, ItemFn, Visibility};
use syn::{parse_macro_input, FnArg, ItemFn, Type, Visibility};
#[proc_macro_attribute]
pub fn bind(args: TokenStream, function: TokenStream) -> TokenStream {
@ -21,7 +21,17 @@ pub fn bind(args: TokenStream, function: TokenStream) -> TokenStream {
let variadic = inner_fn.sig.inputs.len();
let i = (0..variadic).map(syn::Index::from);
let t = (0..variadic).map(|_| quote! { _ });
let t: Vec<Type> = inner_fn
.sig
.inputs
.iter()
.map(|x| match x {
FnArg::Receiver(_) => {
panic!("all arguments must have specified types, no `self` allowed")
}
FnArg::Typed(item) => *item.ty.clone(),
})
.collect();
// this is cursed...
let (args, ty) = if variadic != 1 {
@ -34,7 +44,8 @@ pub fn bind(args: TokenStream, function: TokenStream) -> TokenStream {
},
)
} else {
(quote! { data }, quote! { _ })
let ty = &t[0];
(quote! { data }, quote! { #ty })
};
TokenStream::from(quote! {
@ -48,7 +59,14 @@ pub fn bind(args: TokenStream, function: TokenStream) -> TokenStream {
let data = unsafe { buffer.to_vec() };
// operation
let data: #ty = ::plugin::bincode::deserialize(&data).unwrap();
let data: #ty = match ::plugin::bincode::deserialize(&data) {
Ok(d) => d,
Err(e) => {
println!("data: {:?}", data);
println!("error: {}", e);
panic!("Data passed to function not deserializable.")
},
};
let result = #inner_fn_name(#args);
let new_data: Result<Vec<u8>, _> = ::plugin::bincode::serialize(&result);
let new_data = new_data.unwrap();