1 files changed, 143 insertions, 0 deletions
diff --git a/macros/render_system_macros/src/lib.rs b/macros/render_system_macros/src/lib.rs
new file mode 100644
index 0000000..7466b53
--- /dev/null
+++ b/macros/render_system_macros/src/lib.rs
@@ -0,0 +1,143 @@
+use proc_macro::TokenStream;
+use quote::quote;
+use syn::{ItemFn, Type, parse_macro_input, spanned::Spanned};
+
+/// Macro for simplifying renderer definitions
+///
+/// Expands the `#[result_renderer(Renderer)]` macro into the corresponding struct and trait implementation
+///
+/// # Example
+/// ```ignore
+/// #[result_renderer(MyRenderer)]
+/// async fn render(data: &Output) -> Result<JVRenderResult, CmdRenderError> {
+///     // Rendering logic
+/// }
+/// ```
+///
+/// Expands to:
+/// ```ignore
+/// pub struct MyRenderer;
+///
+/// impl JVResultRenderer<Output> for MyRenderer {
+///     async fn render(data: &Output) -> Result<JVRenderResult, CmdRenderError> {
+///         // Rendering logic
+///     }
+/// }
+///
+/// impl JVResultAutoRenderer<Output> for MyRenderer {
+///     fn get_type_id(&self) -> std::any::TypeId {
+///         std::any::TypeId::of::<Self>()
+///     }
+///
+///     fn get_data_type_id(&self) -> std::any::TypeId {
+///         std::any::TypeId::of::<Output>()
+///     }
+/// }
+/// ```
+#[proc_macro_attribute]
+pub fn result_renderer(args: TokenStream, input: TokenStream) -> TokenStream {
+    // Parse macro arguments (renderer struct name)
+    let renderer_name = parse_macro_input!(args as syn::Ident);
+
+    // Parse the input function
+    let input_fn = parse_macro_input!(input as ItemFn);
+
+    // Check if the function is async
+    if input_fn.sig.asyncness.is_none() {
+        return syn::Error::new(input_fn.sig.ident.span(), "renderer function must be async")
+            .to_compile_error()
+            .into();
+    }
+
+    // Get the function name
+    let fn_name = &input_fn.sig.ident;
+
+    // Get function parameters
+    let fn_inputs = &input_fn.sig.inputs;
+
+    // Check the number of function parameters
+    if fn_inputs.len() != 1 {
+        return syn::Error::new(
+            input_fn.sig.paren_token.span.join(),
+            "renderer function must have exactly one parameter",
+        )
+        .to_compile_error()
+        .into();
+    }
+
+    // Extract the type of the first parameter
+    let param_type = match &fn_inputs[0] {
+        syn::FnArg::Typed(pat_type) => &pat_type.ty,
+        syn::FnArg::Receiver(_) => {
+            return syn::Error::new(
+                fn_inputs[0].span(),
+                "renderer function cannot have self parameter",
+            )
+            .to_compile_error()
+            .into();
+        }
+    };
+
+    // Check if the parameter type is a reference type, and extract the inner type
+    let inner_type = match &**param_type {
+        Type::Reference(type_ref) => {
+            // Ensure it's a reference type
+            &type_ref.elem
+        }
+        _ => {
+            return syn::Error::new(
+                param_type.span(),
+                "renderer function parameter must be a reference type (&Data)",
+            )
+            .to_compile_error()
+            .into();
+        }
+    };
+
+    // Extract the parameter pattern (for function calls)
+    let param_pattern = match &fn_inputs[0] {
+        syn::FnArg::Typed(pat_type) => &pat_type.pat,
+        _ => unreachable!(),
+    };
+
+    // Extract the function's visibility modifier
+    let visibility = &input_fn.vis;
+
+    // Extract generic parameters (if any)
+    let generics = &input_fn.sig.generics;
+
+    // Extract where clause (if any)
+    let where_clause = &generics.where_clause;
+
+    // Build the output
+    let expanded = quote! {
+        #input_fn
+
+        #visibility struct #renderer_name;
+
+        impl #generics crate::systems::render::renderer::JVResultRenderer<#inner_type> for #renderer_name
+        #where_clause
+        {
+            fn render(
+                #fn_inputs
+            ) -> impl ::std::future::Future<Output = ::std::result::Result<
+                crate::systems::render::renderer::JVRenderResult,
+                crate::systems::cmd::errors::CmdRenderError
+            >> + ::std::marker::Send + ::std::marker::Sync {
+                async move {
+                    #fn_name(#param_pattern).await
+                }
+            }
+
+            fn get_type_id(&self) -> std::any::TypeId {
+                std::any::TypeId::of::<Self>()
+            }
+
+            fn get_data_type_id(&self) -> std::any::TypeId {
+                std::any::TypeId::of::<#inner_type>()
+            }
+        }
+    };
+
+    expanded.into()
+}