Merge pull request #84 from paritytech/td-clone

Add couple of useful derives for generated structs.

derive/src/lib.rs

@@ -59,6 +59,7 @@ fn impl_ethabi_derive(ast: &syn::DeriveInput) -> Result<quote::Tokens> {
 				#(#logs_structs)*
 			}
 
+			#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
 			pub struct #events_name {
 			}
 
@@ -85,6 +86,7 @@ fn impl_ethabi_derive(ast: &syn::DeriveInput) -> Result<quote::Tokens> {
 				#(#func_structs)*
 			}
 
+			#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
 			pub struct #functions_name {
 			}
 			impl #functions_name {
@@ -107,16 +109,10 @@ fn impl_ethabi_derive(ast: &syn::DeriveInput) -> Result<quote::Tokens> {
 		const INTERNAL_ERR: &'static str = "`ethabi_derive` internal error";
 
 		/// Contract
+		#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
 		pub struct #name {
 		}
 
-		impl Default for #name {
-			fn default() -> Self {
-				#name {
-				}
-			}
-		}
-
 		impl #name {
 			#constructor_impl
 		}
@@ -403,6 +399,7 @@ fn declare_logs(event: &Event) -> quote::Tokens {
 		.collect();
 
 	quote! {
+		#[derive(Debug, Clone, PartialEq)]
 		pub struct #name {
 			#(#params)*
 		}
@@ -495,6 +492,7 @@ fn declare_events(event: &Event) -> quote::Tokens {
 
 
 	quote! {
+		#[derive(Debug, Clone, PartialEq)]
 		pub struct #name {
 			event: ethabi::Event,
 		}
@@ -650,6 +648,7 @@ fn declare_functions(function: &Function) -> quote::Tokens {
 	let function_constant = &function.constant;
 
 	quote! {
+		#[derive(Debug, Clone, PartialEq)]
 		pub struct #name {
 			function: ethabi::Function,
 		}

tests/src/lib.rs

@@ -29,6 +29,14 @@ mod tests {
 		}
 	}
 
+	#[test]
+	fn should_be_cloneable() {
+		use validators::Validators;
+
+		let contract = Validators::default();
+		contract.clone();
+	}
+
 	#[test]
 	fn test_encoding_function_input_as_array() {
 		use validators::Validators;