add: proc macros

Cargo.lock

@@ -191,9 +191,18 @@ checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
 [[package]]
 name = "scs-rs"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
  "bindgen",
+ "scs-rs-proc-macros",
+]
+
+[[package]]
+name = "scs-rs-proc-macros"
+version = "0.1.0"
+dependencies = [
+ "quote",
+ "syn",
 ]
 
 [[package]]

Cargo.toml

@@ -1,15 +1,6 @@
-[package]
-name = "scs-rs"
-version = "0.1.0"
-edition = "2021"
-authors = ["LuoRain <luotianyi@luotianyi.me>"]
-description = "Bindings for SCS Software SDK"
-repository = "https://git.rainplus.org/LuoRain/scs-rs"
-license = "MIT"
+[workspace]
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[build-dependencies]
-bindgen = "0.65.1"
-
-[dependencies]
+members = [
+    "scs_rs",
+    "proc_macros"
+]

proc_macros/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "scs-rs-proc-macros"
+version = "0.1.0"
+edition = "2021"
+authors = ["LuoRain <luotianyi@luotianyi.me>"]
+description = "Procedural macros for scs-rs crate"
+repository = "https://git.rainplus.org/LuoRain/scs-rs"
+license = "MIT"
+
+[lib]
+proc-macro = true
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+quote = "1.0.26"
+syn = { version = "2.0.15", features = ["full"] }

proc_macros/src/lib.rs

@@ -0,0 +1,44 @@
+use std::str::FromStr;
+
+use proc_macro::TokenStream;
+use quote::quote;
+use syn::{parse_macro_input, ItemFn, punctuated::Punctuated, FnArg, token::Comma};
+
+#[proc_macro_attribute]
+pub fn scs_api(args: TokenStream, input: TokenStream) -> TokenStream {
+    let api_type = if args.is_empty() {
+        "void".to_string()
+    } else {
+        args.to_string()
+    };
+
+    if api_type != "void" && api_type != "result" {
+        panic!("Expected API type `void` or `result`, but got `{}`", api_type);
+    }
+
+    let mut input = parse_macro_input!(input as ItemFn);
+
+    input.sig.abi = syn::parse_str("extern \"C\"").unwrap();
+
+    if api_type == "result" {
+        input.sig.output = syn::parse_str("-> scs_rs::scs_result_t").unwrap();
+    }
+    
+    TokenStream::from(quote!(#input))
+}
+
+#[proc_macro_attribute]
+pub fn scs_telemetry_init(_args: TokenStream, input: TokenStream) -> TokenStream {
+    let input = scs_api(TokenStream::from_str("result").unwrap(), input);
+    let mut input = parse_macro_input!(input as ItemFn);
+
+    let mut punc = Punctuated::new();
+    punc.push_value(syn::parse_str::<FnArg>("version: scs_rs::scs_u32_t").unwrap());
+    punc.push_punct(syn::parse_str::<Comma>(",").unwrap());
+    punc.push_value(syn::parse_str("params: *const scs_rs::scs_telemetry_init_params_t").unwrap());
+
+    input.sig.inputs = punc;
+    input.sig.ident = syn::parse_str("scs_telemetry_init").unwrap();
+
+    TokenStream::from(quote!(#input))
+}

scs_rs/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "scs-rs"
+version = "0.2.0"
+edition = "2021"
+authors = ["LuoRain <luotianyi@luotianyi.me>"]
+description = "Bindings for SCS Software SDK"
+repository = "https://git.rainplus.org/LuoRain/scs-rs"
+license = "MIT"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[build-dependencies]
+bindgen = "0.65.1"
+
+[dependencies]
+scs-rs-proc-macros = { path = "../proc_macros", version = "0.1" }

scs_rs/src/lib.rs

@@ -0,0 +1,7 @@
+#![allow(non_upper_case_globals)]
+#![allow(non_camel_case_types)]
+#![allow(non_snake_case)]
+
+include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
+
+pub use scs_rs_proc_macros as proc_macros;

scs_rs/wrapper.hpp

@@ -0,0 +1,13 @@
+/* America Truck Simulator */
+#include "../sdk/include/amtrucks/scssdk_ats.h"
+#include "../sdk/include/amtrucks/scssdk_input_ats.h"
+#include "../sdk/include/amtrucks/scssdk_telemetry_ats.h"
+
+/* Euro Truck Simulator 2 */
+#include "../sdk/include/eurotrucks2/scssdk_eut2.h"
+#include "../sdk/include/eurotrucks2/scssdk_input_eut2.h"
+#include "../sdk/include/eurotrucks2/scssdk_telemetry_eut2.h"
+
+/* SDK */
+#include "../sdk/include/scssdk_input.h"
+#include "../sdk/include/scssdk_telemetry.h"

src/lib.rs

@@ -1,5 +0,0 @@
-#![allow(non_upper_case_globals)]
-#![allow(non_camel_case_types)]
-#![allow(non_snake_case)]
-
-include!(concat!(env!("OUT_DIR"), "/bindings.rs"));

wrapper.hpp

@@ -1,13 +0,0 @@
-/* America Truck Simulator */
-#include "./sdk/include/amtrucks/scssdk_ats.h"
-#include "./sdk/include/amtrucks/scssdk_input_ats.h"
-#include "./sdk/include/amtrucks/scssdk_telemetry_ats.h"
-
-/* Euro Truck Simulator 2 */
-#include "./sdk/include/eurotrucks2/scssdk_eut2.h"
-#include "./sdk/include/eurotrucks2/scssdk_input_eut2.h"
-#include "./sdk/include/eurotrucks2/scssdk_telemetry_eut2.h"
-
-/* SDK */
-#include "./sdk/include/scssdk_input.h"
-#include "./sdk/include/scssdk_telemetry.h"