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https://github.com/rustwasm/wasm-bindgen.git
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bindings for Function.prototype.apply() and Function.prototype.toString()
This commit is contained in:
Alexander Kryvomaz
parent
16bc3eb7e7
commit
48061aaab6
19
src/js.rs
19
src/js.rs
@ -240,13 +240,20 @@ extern {
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// Function
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#[wasm_bindgen]
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extern {
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pub type JsFunction;
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pub type Function;
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/// The apply() method calls a function with a given this value, and arguments provided as an array
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/// (or an array-like object).
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///
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/// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/apply
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#[wasm_bindgen(method)]
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pub fn apply(this: &Function, context: &JsValue, args: &Array) -> Function;
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/// The length property indicates the number of arguments expected by the function.
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///
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/// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/length
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#[wasm_bindgen(method, getter, structural)]
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pub fn length(this: &JsFunction) -> u32;
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pub fn length(this: &Function) -> u32;
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/// A Function object's read-only name property indicates the function's
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/// name as specified when it was created or "anonymous" for functions
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@ -254,7 +261,13 @@ extern {
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///
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/// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name
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#[wasm_bindgen(method, getter, structural)]
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pub fn name(this: &JsFunction) -> JsString;
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pub fn name(this: &Function) -> JsString;
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/// The toString() method returns a string representing the source code of the function.
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///
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/// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/toString
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#[wasm_bindgen(method, js_name = toString)]
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pub fn to_string(this: &Function) -> JsString;
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}
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// Math
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144
tests/all/js_globals/Function.rs
Normal file
144
tests/all/js_globals/Function.rs
Normal file
@ -0,0 +1,144 @@
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#![allow(non_snake_case)]
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use project;
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#[test]
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fn apply() {
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project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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use wasm_bindgen::js;
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#[wasm_bindgen]
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pub fn apply(this: &js::Function, context: &JsValue, args: &js::Array) -> js::Function {
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this.apply(context, args)
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}
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"#)
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.file("test.ts", r#"
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import * as assert from "assert";
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import * as wasm from "./out";
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export function test() {
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assert.equal(wasm.apply(Math.max, {}, [1, 2, 3]), 3);
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const arr = [1, 2];
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wasm.apply(Array.prototype.push, arr, [3]);
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assert.equal(arr[2], 3);
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}
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"#)
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.test()
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}
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#[test]
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fn length() {
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project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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use wasm_bindgen::js;
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#[wasm_bindgen]
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pub fn fn_length(this: &js::Function) -> u32 {
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this.length()
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}
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"#)
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.file("test.ts", r#"
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import * as assert from "assert";
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import * as wasm from "./out";
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export function test() {
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assert.equal(wasm.fn_length(() => {}), 0);
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assert.equal(wasm.fn_length((a: string) => console.log(a)), 1);
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assert.equal(wasm.fn_length((a: string, b: string) => console.log({ a, b })), 2);
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function fn0() {}
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function fn1(a: string) {
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console.log(a);
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}
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function fn2(a: string, b: string) {
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console.log({ a, b });
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}
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assert.equal(wasm.fn_length(fn0), 0);
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assert.equal(wasm.fn_length(fn1), 1);
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assert.equal(wasm.fn_length(fn2), 2);
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}
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"#)
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.test()
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}
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#[test]
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fn name() {
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project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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use wasm_bindgen::js;
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#[wasm_bindgen]
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pub fn fn_name(this: &js::Function) -> js::JsString {
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this.name()
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}
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"#)
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.file("test.ts", r#"
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import * as assert from "assert";
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import * as wasm from "./out";
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export function test() {
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function namedFn() {}
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assert.equal(wasm.fn_name(namedFn), 'namedFn');
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assert.equal(wasm.fn_name(namedFn.bind({})), 'bound namedFn');
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const obj = {
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method: () => {}
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}
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assert.equal(wasm.fn_name(obj.method), 'method');
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assert.equal(wasm.fn_name(new Function()), 'anonymous');
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assert.equal(wasm.fn_name(() => {}), '');
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const closure = () => {};
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assert.equal(wasm.fn_name(closure), 'closure');
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}
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"#)
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.test()
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}
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#[test]
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fn to_string() {
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project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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use wasm_bindgen::js;
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#[wasm_bindgen]
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pub fn get_source_code(this: &js::Function) -> js::JsString {
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this.to_string()
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}
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"#)
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.file("test.ts", r#"
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import * as assert from "assert";
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import * as wasm from "./out";
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export function test() {
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function fn1(a: any, b: any) { return a + b }
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const fn2 = (a: number) => console.log(a);
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assert.equal(wasm.get_source_code(fn1), 'function fn1(a, b) { return a + b; }');
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assert.equal(wasm.get_source_code(fn2), 'function (a) { return console.log(a); }');
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}
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"#)
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.test()
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}
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@ -1,84 +0,0 @@
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#![allow(non_snake_case)]
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use project;
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#[test]
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fn length() {
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project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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use wasm_bindgen::js;
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#[wasm_bindgen]
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pub fn fn_length(this: &js::JsFunction) -> u32 {
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this.length()
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}
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"#)
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.file("test.ts", r#"
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import * as assert from "assert";
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import * as wasm from "./out";
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export function test() {
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assert.equal(0, wasm.fn_length(() => {}));
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assert.equal(1, wasm.fn_length((a: string) => console.log(a)));
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assert.equal(2, wasm.fn_length((a: string, b: string) => console.log({ a, b })));
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function fn0() {}
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function fn1(a: string) {
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console.log(a);
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}
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function fn2(a: string, b: string) {
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console.log({ a, b });
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}
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assert.equal(0, wasm.fn_length(fn0));
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assert.equal(1, wasm.fn_length(fn1));
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assert.equal(2, wasm.fn_length(fn2));
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}
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"#)
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.test()
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}
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#[test]
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fn name() {
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project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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use wasm_bindgen::js;
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#[wasm_bindgen]
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pub fn fn_name(this: &js::JsFunction) -> js::JsString {
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this.name()
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}
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"#)
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.file("test.ts", r#"
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import * as assert from "assert";
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import * as wasm from "./out";
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export function test() {
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function namedFn() {}
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assert.equal('namedFn', wasm.fn_name(namedFn));
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assert.equal('bound namedFn', wasm.fn_name(namedFn.bind({})));
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const obj = {
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method: () => {}
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}
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assert.equal('method', wasm.fn_name(obj.method));
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assert.equal('anonymous', wasm.fn_name(new Function()));
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assert.equal('', wasm.fn_name(() => {}));
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const closure = () => {};
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assert.equal('closure', wasm.fn_name(closure));
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}
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"#)
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.test()
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}
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@ -5,7 +5,7 @@ use super::project;
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mod Array;
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mod ArrayIterator;
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mod Date;
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mod JsFunction;
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mod Function;
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mod JsString;
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mod Math;
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mod Number;
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