uses a proc-macro to automate command definitions

api-proc-macro/src/lib.rs

@@ -0,0 +1,11 @@
+extern crate proc_macro;
+
+use proc_macro_error::proc_macro_error;
+
+mod into_command_definition;
+
+#[proc_macro_error]
+#[proc_macro_derive(IntoCommandDefinition)]
+pub fn derive_into_command_definition(item: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    into_command_definition::derive_into_command_definition_impl(item)
+}