git.delta.rocks / unique-network / refs/commits / 7cb20157d174

--- /dev/null
+++ b/crates/evm-coder/procedural/src/abi_derive.rs
@@ -0,0 +1,66 @@
+use quote::quote;
+
+pub(crate) fn impl_abi_macro(ast: &syn::DeriveInput) -> proc_macro2::TokenStream {
+	// dbg!(ast);
+	let name = &ast.ident;
+	let can_be_plcaed_in_vec = impl_can_be_placed_in_vec(name);
+	let abi_type = impl_abi_type(ast);
+	println!("{}", abi_type);
+	quote! {
+		#can_be_plcaed_in_vec
+		#abi_type
+	}
+}
+
+fn impl_can_be_placed_in_vec(ident: &syn::Ident) -> proc_macro2::TokenStream {
+	quote! {
+		impl ::evm_coder::abi::sealed::CanBePlacedInVec for #ident {}
+	}
+}
+
+fn impl_abi_type(ast: &syn::DeriveInput) -> proc_macro2::TokenStream {
+	let name = &ast.ident;
+	let (fields, params_count) = match &ast.data {
+		syn::Data::Struct(ds) => match ds.fields {
+			syn::Fields::Named(ref fields) => (
+				fields.named.iter().map(|field| &field.ty),
+				fields.named.len(),
+			),
+			syn::Fields::Unnamed(_) => todo!(),
+			syn::Fields::Unit => unimplemented!("Unit structs not supported"),
+		},
+		syn::Data::Enum(_) => unimplemented!("Enums not supported"),
+		syn::Data::Union(_) => unimplemented!("Unions not supported"),
+	};
+
+	let mut params_signature = {
+		let fields = fields.clone();
+		quote!(
+			#(nameof(<#fields as ::evm_coder::abi::AbiType>::SIGNATURE) fixed(","))*
+		)
+	};
+	if params_count > 0 {
+		params_signature.extend(quote!(shift_left(1)))
+	};
+
+	let fields_for_dynamic = fields.clone();
+
+	quote! {
+		impl ::evm_coder::abi::AbiType for #name {
+			const SIGNATURE: ::evm_coder::custom_signature::SignatureUnit = ::evm_coder::make_signature!(
+				new fixed("(")
+				#params_signature
+				fixed(")")
+			);
+			fn is_dynamic() -> bool {
+				false
+				#(
+					|| <#fields_for_dynamic as ::evm_coder::abi::AbiType>::is_dynamic()
+				)*
+			}
+			fn size() -> usize {
+				0 #(+ <#fields as ::evm_coder::abi::AbiType>::size())*
+			}
+		}
+	}
+}

no changes