Add extends attributes for several types

Part of #670

crates/js-sys/src/lib.rs

@@ -125,6 +125,7 @@ extern "C" {
 // Array
 #[wasm_bindgen]
 extern "C" {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type Array;
 
@@ -347,6 +348,7 @@ extern "C" {
 // ArrayBuffer
 #[wasm_bindgen]
 extern "C" {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type ArrayBuffer;
 
@@ -421,6 +423,7 @@ extern "C" {
 // Boolean
 #[wasm_bindgen]
 extern "C" {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type Boolean;
 
@@ -440,6 +443,7 @@ extern "C" {
 // DataView
 #[wasm_bindgen]
 extern "C" {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type DataView;
 
@@ -587,6 +591,7 @@ extern "C" {
 // Error
 #[wasm_bindgen]
 extern "C" {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type Error;
 
@@ -625,6 +630,8 @@ extern "C" {
 // Float32Array
 #[wasm_bindgen]
 extern "C" {
+    // TODO Uncomment this once TypedArray is added:
+    // #[wasm_bindgen(extends = Object, extends = TypedArray)]
     #[derive(Clone, Debug)]
     pub type Float32Array;
 
@@ -677,6 +684,8 @@ extern "C" {
 // Float64Array
 #[wasm_bindgen]
 extern "C" {
+    // TODO Uncomment this once TypedArray is added:
+    // #[wasm_bindgen(extends = Object, extends = TypedArray)]
     #[derive(Clone, Debug)]
     pub type Float64Array;
 
@@ -729,6 +738,7 @@ extern "C" {
 // Function
 #[wasm_bindgen]
 extern "C" {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type Function;
 
@@ -1007,6 +1017,7 @@ extern "C" {
 // Map
 #[wasm_bindgen]
 extern {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type Map;
 
@@ -1385,6 +1396,7 @@ extern "C" {
 // Number.
 #[wasm_bindgen]
 extern "C" {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type Number;
 
@@ -1482,6 +1494,7 @@ extern "C" {
 // Date.
 #[wasm_bindgen]
 extern "C" {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type Date;
 
@@ -2265,6 +2278,7 @@ extern {
 // Set
 #[wasm_bindgen]
 extern {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type Set;
 
@@ -2559,6 +2573,7 @@ extern "C" {
 // WeakMap
 #[wasm_bindgen]
 extern "C" {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type WeakMap;
 
@@ -2602,6 +2617,7 @@ extern "C" {
 // WeakSet
 #[wasm_bindgen]
 extern "C" {
+    #[wasm_bindgen(extends = Object)]
     #[derive(Clone, Debug)]
     pub type WeakSet;
 

crates/js-sys/tests/wasm/Array.rs

@@ -1,5 +1,6 @@
 use wasm_bindgen::JsValue;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 macro_rules! js_array {
@@ -286,3 +287,10 @@ fn for_each() {
     assert_eq!(sum_indices_of_evens(&js_array![1, 3, 5, 7]), 0);
     assert_eq!(sum_indices_of_evens(&js_array![3, 5, 7, 10]), 3);
 }
+
+#[wasm_bindgen_test]
+fn array_inheritance() {
+    let array = js_array![0];
+    assert!(array.is_instance_of::<Array>());
+    assert!(array.is_instance_of::<Object>());
+}

crates/js-sys/tests/wasm/ArrayBuffer.rs

@@ -1,5 +1,6 @@
 use wasm_bindgen::JsValue;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 #[wasm_bindgen_test]
@@ -34,3 +35,10 @@ fn slice_with_end() {
     let slice = buf.slice_with_end(1, 2);
     assert!(JsValue::from(slice).is_object());
 }
+
+#[wasm_bindgen_test]
+fn arraybuffer_inheritance() {
+    let buf = ArrayBuffer::new(4);
+    assert!(buf.is_instance_of::<ArrayBuffer>());
+    assert!(buf.is_instance_of::<Object>());
+}

crates/js-sys/tests/wasm/Boolean.rs

@@ -1,5 +1,6 @@
 use wasm_bindgen::JsValue;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 #[wasm_bindgen_test]
@@ -11,3 +12,10 @@ fn new_undefined() {
 fn new_truely() {
     assert_eq!(Boolean::new(&JsValue::from("foo")).value_of(), true);
 }
+
+#[wasm_bindgen_test]
+fn boolean_inheritance() {
+    let b = Boolean::new(&JsValue::from(true));
+    assert!(b.is_instance_of::<Boolean>());
+    assert!(b.is_instance_of::<Object>());
+}

crates/js-sys/tests/wasm/DataView.rs

@@ -1,5 +1,6 @@
 use wasm_bindgen::JsValue;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 #[wasm_bindgen_test]
@@ -37,3 +38,16 @@ fn test() {
     // TODO: figure out how to do `bytes[2]`
     bytes.subarray(2, 3).for_each(&mut |x, _, _| assert_eq!(x, 42));
 }
+
+#[wasm_bindgen_test]
+fn dataview_inheritance() {
+    let bytes = Int8Array::new(&JsValue::from(10));
+
+    // TODO: figure out how to do `bytes[2] = 2`
+    bytes.subarray(2, 3).fill(2, 0, 1);
+
+    let v = DataView::new(&bytes.buffer(), 2, 8);
+
+    assert!(v.is_instance_of::<DataView>());
+    assert!(v.is_instance_of::<Object>());
+}

crates/js-sys/tests/wasm/Date.rs

@@ -1,5 +1,6 @@
 use wasm_bindgen::JsValue;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 #[wasm_bindgen_test]
@@ -406,3 +407,10 @@ fn value_of() {
     let date = Date::new(&Date::utc(2018f64, 6f64).into());
     assert_eq!(date.value_of(), 1530403200000.0);
 }
+
+#[wasm_bindgen_test]
+fn date_inheritance() {
+    let date = Date::new(&"August 19, 1975 23:15:30".into());
+    assert!(date.is_instance_of::<Date>());
+    assert!(date.is_instance_of::<Object>());
+}

crates/js-sys/tests/wasm/Error.rs

@@ -1,5 +1,6 @@
 use wasm_bindgen::JsValue;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 #[wasm_bindgen_test]
@@ -35,3 +36,10 @@ fn to_string() {
     error.set_name("error_name_1");
     assert_eq!(JsValue::from(error.to_string()), "error_name_1: error message 1");
 }
+
+#[wasm_bindgen_test]
+fn error_inheritance() {
+    let error = Error::new("test");
+    assert!(error.is_instance_of::<Error>());
+    assert!(error.is_instance_of::<Object>());
+}

crates/js-sys/tests/wasm/Function.rs

@@ -1,5 +1,6 @@
 use wasm_bindgen::prelude::*;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 #[wasm_bindgen]
@@ -60,3 +61,9 @@ fn name() {
 fn to_string() {
     assert!(MAX.to_string().length() > 0);
 }
+
+#[wasm_bindgen_test]
+fn function_inheritance() {
+    assert!(MAX.is_instance_of::<Function>());
+    assert!(MAX.is_instance_of::<Object>());
+}

crates/js-sys/tests/wasm/Map.rs

@@ -1,4 +1,5 @@
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 #[wasm_bindgen_test]
@@ -86,3 +87,10 @@ fn size() {
     map.set(&"bar".into(), &"baz".into());
     assert_eq!(map.size(), 2);
 }
+
+#[wasm_bindgen_test]
+fn map_inheritance() {
+    let map = Map::new();
+    assert!(map.is_instance_of::<Map>());
+    assert!(map.is_instance_of::<Object>());
+}

crates/js-sys/tests/wasm/Number.rs

@@ -2,6 +2,7 @@ use std::f64::{INFINITY, NAN};
 
 use wasm_bindgen::JsValue;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 #[wasm_bindgen_test]
@@ -104,3 +105,10 @@ fn to_exponential() {
     assert_eq!(Number::new(&123456.into()).to_exponential(2).unwrap(), "1.23e+5");
     assert!(Number::new(&10.into()).to_exponential(101).is_err());
 }
+
+#[wasm_bindgen_test]
+fn number_inheritance() {
+    let n = Number::new(&JsValue::from(42));
+    assert!(n.is_instance_of::<Number>());
+    assert!(n.is_instance_of::<Object>());
+}

crates/js-sys/tests/wasm/Set.rs

@@ -1,5 +1,6 @@
 use wasm_bindgen::prelude::*;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 fn set2vec(s: &Set) -> Vec<JsValue> {
@@ -80,3 +81,10 @@ fn size() {
     set.add(&3.into());
     assert_eq!(set.size(), 3);
 }
+
+#[wasm_bindgen_test]
+fn set_inheritance() {
+    let set = Set::new(&JsValue::undefined());
+    assert!(set.is_instance_of::<Set>());
+    assert!(set.is_instance_of::<Object>());
+}

crates/js-sys/tests/wasm/Symbol.rs

@@ -1,5 +1,6 @@
 use wasm_bindgen::prelude::*;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 #[wasm_bindgen(module = "tests/wasm/Symbol.js")]

crates/js-sys/tests/wasm/WeakMap.rs

@@ -1,5 +1,6 @@
 use wasm_bindgen::prelude::*;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 #[wasm_bindgen]
@@ -50,3 +51,10 @@ fn delete() {
     map.delete(&key);
     assert!(!map.has(&key));
 }
+
+#[wasm_bindgen_test]
+fn weakmap_inheritance() {
+    let map = WeakMap::new();
+    assert!(map.is_instance_of::<WeakMap>());
+    assert!(map.is_instance_of::<Object>());
+}

crates/js-sys/tests/wasm/WeakSet.rs

@@ -1,5 +1,6 @@
 use wasm_bindgen::prelude::*;
 use wasm_bindgen_test::*;
+use wasm_bindgen::JsCast;
 use js_sys::*;
 
 #[wasm_bindgen]
@@ -40,3 +41,10 @@ fn delete() {
     assert!(!set.has(&value));
     assert!(!set.delete(&value));
 }
+
+#[wasm_bindgen_test]
+fn weakset_inheritance() {
+    let set = WeakSet::new();
+    assert!(set.is_instance_of::<WeakSet>());
+    assert!(set.is_instance_of::<Object>());
+}