Merge pull request #792 from afdw/master

Add support for variadic arguments in WebIDL

crates/webidl-tests/simple.js

@@ -110,6 +110,13 @@ global.OptionalAndUnionArguments = class OptionalAndUnionArguments {
   }
 };
 
+global.Variadic = class Variadic {
+  constructor() {}
+  sum(...values) {
+    return values.reduce((a, b) => a + b, 0);
+  }
+};
+
 global.PartialInterface = class PartialInterface {
   get un() {
     return 1;

crates/webidl-tests/simple.rs

@@ -94,6 +94,24 @@ fn optional_and_union_arguments() {
     assert_eq!(f.m_with_b_and_str_and_opt_bool("abc", false, "5", Some(true)), "string, abc, boolean, false, string, 5, boolean, true");
 }
 
+#[wasm_bindgen_test]
+fn variadic() {
+    let f = Variadic::new().unwrap();
+    assert_eq!(f.sum_5(1, 2, 3, 4, 5), 15);
+    assert_eq!(
+        f.sum(
+            &::js_sys::Array::of5(
+                &JsValue::from_f64(1f64),
+                &JsValue::from_f64(2f64),
+                &JsValue::from_f64(3f64),
+                &JsValue::from_f64(4f64),
+                &JsValue::from_f64(5f64),
+            )
+        ),
+        15
+    );
+}
+
 #[wasm_bindgen_test]
 fn unforgeable_is_structural() {
     let f = Unforgeable::new().unwrap();

crates/webidl-tests/simple.webidl

@@ -57,6 +57,11 @@ interface OptionalAndUnionArguments {
   );
 };
 
+[Constructor()]
+interface Variadic {
+  short sum(short... values);
+};
+
 [Constructor()]
 interface Unforgeable {
   [Unforgeable] readonly attribute short uno;