Update template examples in macro-only template

templates/lib.rs

@@ -1,29 +1,49 @@
-{% if macro_only %}
+{%- if macro_only -%}
 uniffi::setup_scaffolding!();
-{% else %}
+{%- else -%}
 uniffi::include_scaffolding!("lib");
 {%- endif %}
 
 {% if !plain %}
+{% if !macro_only -%}
 // Bindings have to be exposed in a .udl file with the same name as the corresponding .rs file, i.e. lib.udl
 // You can expose top-level functions...
+{%- else -%}
+// You can annotate items with uniffi macros to make them available in your swift package.
+// You can export functions...
+#[uniffi::export]
+{%- endif %}
 pub fn add(a: u64, b: u64) -> u64 {
     a + b
 }
 
 // ... data structs without methods ...
+{%- if macro_only ~%}
+#[derive(uniffi::Record)]
+{%- endif %}
 pub struct Example {
     pub items: Vec<String>,
     pub value: Option<f64>,
 }
 
 // ... classes with methods ...
+{%- if macro_only ~%}
+#[derive(uniffi::Object)]
+{%- endif %}
 pub struct Greeter {
     name: String,
 }
 
+{% if macro_only -%}
+#[uniffi::export]
+{%~ endif -%}
 impl Greeter {
+    {%- if macro_only %}
+    // Constructors need to be annotated as such
+    #[uniffi::constructor]
+    {%- else %}
     // By convention, a method called new is exposed as a constructor
+    {%- endif %}
     pub fn new(name: String) -> Self {
         Self { name }
     }
@@ -33,14 +53,9 @@ impl Greeter {
     }
 }
 
-// Instead of adding bindings in lib.udl, you can also use UniFFIs macros
-// Note that you have to keep the .udl file and its namespace if you are using macros
-//
-// You can read more about UniFFI macros here: https://mozilla.github.io/uniffi-rs/proc_macro/index.html
-#[uniffi::export]
-pub fn subtract(a: u64, b: u64) -> u64 {
-    a - b
-}
-
+{% if macro_only -%}
+// ... and much more! For more information about uniffi macros, read the UniFFI book: https://mozilla.github.io/uniffi-rs/proc_macro/index.html
+{%- else -%}
 // ... and much more! For more information about bindings, read the UniFFI book: https://mozilla.github.io/uniffi-rs/udl_file_spec.html
 {%- endif %}
+{%- endif %}