add support for tokio & improve net crate api

2 files changed, 71 insertions, 0 deletions

diff --git a/jsonrpc/jsonrpc_macro/Cargo.toml b/jsonrpc/jsonrpc_macro/Cargo.toml
new file mode 100644
index 0000000..17140c5
--- /dev/null
+++ b/jsonrpc/jsonrpc_macro/Cargo.toml
@@ -0,0 +1,24 @@
+[package]
+name = "karyon_jsonrpc_macro"
+version.workspace = true 
+edition.workspace = true
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+proc-macro = true
+
+[features]
+default = ["smol"]
+smol = ["karyon_jsonrpc_internal/smol"]
+tokio = ["karyon_jsonrpc_internal/tokio"]
+
+[dependencies]
+karyon_jsonrpc_internal = { path = "../jsonrpc_internal", default-features = false }
+
+proc-macro2 = "1.0"
+quote = "1.0"
+syn = { version = "1.0", features = ["full"] }
+
+serde_json = "1.0.114"
+
diff --git a/jsonrpc/jsonrpc_macro/src/lib.rs b/jsonrpc/jsonrpc_macro/src/lib.rs
new file mode 100644
index 0000000..f2015d4
--- /dev/null
+++ b/jsonrpc/jsonrpc_macro/src/lib.rs
@@ -0,0 +1,47 @@
+use proc_macro::TokenStream;
+use proc_macro2::{Ident, TokenStream as TokenStream2};
+use quote::quote;
+use syn::{parse_macro_input, spanned::Spanned, ImplItem, ItemImpl, Type};
+
+macro_rules! err {
+    ($($tt:tt)*) => {
+        return syn::Error::new($($tt)*).to_compile_error().into()
+    };
+}
+
+#[proc_macro_attribute]
+pub fn rpc_impl(_attr: TokenStream, item: TokenStream) -> TokenStream {
+    let mut methods: Vec<Ident> = vec![];
+
+    let item2 = item.clone();
+    let parsed_input = parse_macro_input!(item2 as ItemImpl);
+
+    let self_ty = match *parsed_input.self_ty {
+        Type::Path(p) => p,
+        _ => err!(
+            parsed_input.span(),
+            "implementing the trait `RPCService` on this type is unsupported"
+        ),
+    };
+
+    if parsed_input.items.is_empty() {
+        err!(self_ty.span(), "At least one method should be implemented");
+    }
+
+    for item in parsed_input.items {
+        match item {
+            ImplItem::Method(method) => {
+                methods.push(method.sig.ident);
+            }
+            _ => err!(item.span(), "unexpected item"),
+        }
+    }
+
+    let item2: TokenStream2 = item.into();
+    let quoted = quote! {
+            karyon_jsonrpc_internal::impl_rpc_service!(#self_ty, #(#methods),*);
+            #item2
+    };
+
+    quoted.into()
+}