chore(macros): reorganize module hierarchy in mingling_macros

Restructure flat module layout into logical directories (attr/, derive/,
func/, systems/, extensions/, utils.rs). Tighten internal function
visibility to pub(crate). All public API signatures remain unchanged.

1 files changed, 79 insertions, 0 deletions

diff --git a/mingling_macros/src/derive/grouped.rs b/mingling_macros/src/derive/grouped.rs
new file mode 100644
index 0000000..307aab6
--- /dev/null
+++ b/mingling_macros/src/derive/grouped.rs
@@ -0,0 +1,79 @@
+use proc_macro::TokenStream;
+use quote::quote;
+use syn::{DeriveInput, Ident, parse_macro_input};
+
+pub(crate) fn derive_grouped(input: TokenStream) -> TokenStream {
+    // Parse the input struct/enum
+    let input = parse_macro_input!(input as DeriveInput);
+    let struct_name = input.ident;
+
+    let group_ident: proc_macro2::TokenStream = crate::default_program_path();
+
+    let any_output_convert_impls =
+        proc_macro2::TokenStream::from(build_any_output_convert_impls(&struct_name, &group_ident));
+
+    // Generate the Grouped trait implementation
+    let expanded = quote! {
+        ::mingling::macros::register_type!(#struct_name);
+
+        impl ::mingling::Grouped<#group_ident> for #struct_name {
+            fn member_id() -> #group_ident {
+                #group_ident::#struct_name
+            }
+        }
+
+        #any_output_convert_impls
+    };
+
+    expanded.into()
+}
+
+#[cfg(feature = "structural_renderer")]
+pub fn derive_grouped_serialize(input: TokenStream) -> TokenStream {
+    // Parse the input struct/enum
+    let input_parsed = parse_macro_input!(input as DeriveInput);
+    let struct_name = input_parsed.ident.clone();
+
+    let group_ident: proc_macro2::TokenStream = crate::default_program_path();
+
+    let any_output_convert_impls =
+        proc_macro2::TokenStream::from(build_any_output_convert_impls(&struct_name, &group_ident));
+
+    // Generate both Serialize and Grouped implementations
+    let expanded = quote! {
+        #[derive(serde::Serialize)]
+        #input_parsed
+
+        ::mingling::macros::register_type!(#struct_name);
+
+        impl ::mingling::Grouped<#group_ident> for #struct_name {
+            fn member_id() -> #group_ident {
+                #group_ident::#struct_name
+            }
+        }
+
+        #any_output_convert_impls
+    };
+
+    expanded.into()
+}
+
+fn build_any_output_convert_impls(
+    struct_name: &Ident,
+    group_ident: &proc_macro2::TokenStream,
+) -> TokenStream {
+    quote! {
+        impl ::std::convert::Into<::mingling::AnyOutput<#group_ident>> for #struct_name {
+            fn into(self) -> ::mingling::AnyOutput<#group_ident> {
+                ::mingling::AnyOutput::new(self)
+            }
+        }
+
+        impl ::std::convert::Into<::mingling::ChainProcess<#group_ident>> for #struct_name {
+            fn into(self) -> ::mingling::ChainProcess<#group_ident> {
+                ::mingling::AnyOutput::new(self).route_chain()
+            }
+        }
+    }
+    .into()
+}