Merge pull request #335 from xeqlol/weakset-bindings

Implement Weakset bindings

src/js.rs

@@ -634,6 +634,36 @@ extern {
     pub fn delete(this: &WeakMap, key: Object) -> bool;
 }
 
+// WeakSet
+#[wasm_bindgen]
+extern {
+    pub type WeakSet;
+
+    /// The WeakSet object lets you store weakly held objects in a collection.
+    /// 
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet
+    #[wasm_bindgen(constructor)]
+    pub fn new() -> WeakSet;
+
+    /// The has() method returns a boolean indicating whether an object exists in a WeakSet or not.
+    /// 
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/has
+    #[wasm_bindgen(method)]
+    pub fn has(this: &WeakSet, value: Object) -> bool;
+
+    /// The add() method appends a new object to the end of a WeakSet object.
+    /// 
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/add
+    #[wasm_bindgen(method)]
+    pub fn add(this: &WeakSet, value: Object) -> WeakSet;
+
+    /// The delete() method removes the specified element from a WeakSet object.
+    /// 
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet/delete
+    #[wasm_bindgen(method)]
+    pub fn delete(this: &WeakSet, value: Object) -> bool;
+}
+
 // JsString
 #[wasm_bindgen]
 extern {

tests/all/js_globals/WeakSet.rs

@@ -0,0 +1,133 @@
+#![allow(non_snake_case)]
+
+use project;
+
+#[test]
+fn new() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn new_weak_set() -> js::WeakSet {
+                js::WeakSet::new()
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                assert.equal(typeof wasm.new_weak_set(), "object");
+            }
+        "#)
+        .test()
+}
+
+#[test]
+fn has() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn has_value(this: &js::WeakSet, value: js::Object) -> bool {
+                this.has(value)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                let set = new WeakSet();
+                let value = {some: "value"};
+                set.add(value);
+                assert.equal(wasm.has_value(set, value), true);
+
+                let nonex = {nonexistent: "value"};
+                assert.equal(wasm.has_value(set, nonex), false);
+            }
+        "#)
+        .test()
+}
+
+#[test]
+fn add() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn add_value(this: &js::WeakSet, value: js::Object) -> js::WeakSet {
+                this.add(value)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                let set = new WeakSet();
+                let value = {some: "value"};
+                wasm.add_value(set, value);
+                assert.equal(set.has(value), true);
+
+                assert.throws(() => { wasm.add_value(set, 1) }, TypeError);
+                assert.throws(() => { wasm.add_value(set, true) }, TypeError);
+                assert.throws(() => { wasm.add_value(set, "fail") }, TypeError);
+                assert.throws(() => { wasm.add_value(set, null) }, TypeError);
+                assert.throws(() => { wasm.add_value(set, undefined) }, TypeError);
+            }
+        "#)
+        .test()
+}
+
+#[test]
+fn delete() {
+    project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro, wasm_custom_section)]
+
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            use wasm_bindgen::js;
+
+            #[wasm_bindgen]
+            pub fn delete_value(this: &js::WeakSet, value: js::Object) -> bool {
+                this.delete(value)
+            }
+        "#)
+        .file("test.ts", r#"
+            import * as assert from "assert";
+            import * as wasm from "./out";
+
+            export function test() {
+                let set = new WeakSet();
+                let value = {some: "value"};
+                set.add(value);
+                assert.equal(wasm.delete_value(set, value), true);
+                assert.equal(set.has(value), false);
+                assert.equal(wasm.delete_value(set, value), false);
+
+                assert.equal(wasm.delete_value(set, 1), false);
+                assert.equal(wasm.delete_value(set, true), false);
+                assert.equal(wasm.delete_value(set, "false"), false);
+                assert.equal(wasm.delete_value(set, null), false);
+                assert.equal(wasm.delete_value(set, undefined), false);
+            }
+        "#)
+        .test()
+}

tests/all/js_globals/mod.rs

@@ -9,6 +9,7 @@ mod Function;
 mod JsString;
 mod Math;
 mod WeakMap;
+mod WeakSet;
 mod Number;
 mod Object;
 mod TypedArray;