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https://github.com/fluencelabs/wasm-bindgen
synced 2025-03-16 10:10:52 +00:00
add binding for slice
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@ -118,4 +118,12 @@ extern {
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/// http://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join
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#[wasm_bindgen(method)]
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pub fn join(this: &Array, delimiter: &str) -> String;
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/// The slice() method returns a shallow copy of a portion of an array into a new array
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/// object selected from begin to end (end not included).
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/// The original array will not be modified.
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///
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/// http://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
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#[wasm_bindgen(method)]
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pub fn slice(this: &Array, start: u32, end: u32) -> Array;
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}
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@ -109,3 +109,33 @@ fn join() {
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"#)
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.test()
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}
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#[test]
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fn slice() {
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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 create_slice(this: &js::Array, start: u32, end: u32) -> js::Array {
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this.slice(start, end)
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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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let characters = ["a", "c", "x", "n", 1, "8"];
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let subset = wasm.create_slice(characters, 1, 3);
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assert.equal(subset[0], "c");
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assert.equal(subset[1], "x");
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}
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"#)
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.test()
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}
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