Define a wasm document.

src/wasm/macros.rs

@@ -0,0 +1,15 @@
+/// Write the implementation for the intermediate ast node.
+///
+/// This exists to make changing the type signature easier.
+macro_rules! to_wasm {
+    ($ostruct:ty, $istruct:ty, $original:ident, $document:ident, $fnbody:tt) => {
+        impl<'s> From<(&'s str, $istruct)> for $ostruct {
+            fn from(value: (&'s str, $istruct)) -> $ostruct {
+                let ($original, $document) = value;
+                $fnbody
+            }
+        }
+    };
+}
+
+pub(crate) use to_wasm;