Support String.prototype.codePointAt

This commit is contained in:
Satoshi Amemiya 2018-06-26 22:05:16 +09:00
parent 947dfbeae0
commit efeefbd4c1
2 changed files with 34 additions and 0 deletions

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@ -447,6 +447,12 @@ extern {
#[wasm_bindgen(method, js_class = "String", js_name = charAt)]
pub fn char_at(this: &JsString, index: u32) -> JsString;
/// The codePointAt() method returns a non-negative integer that is the Unicode code point value.
///
/// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/codePointAt
#[wasm_bindgen(method, js_class = "String", js_name = codePointAt)]
pub fn code_point_at(this: &JsString, pos: u32) -> JsValue;
/// The indexOf() method returns the index within the calling String object of
/// the first occurrence of the specified value, starting the search at fromIndex.
/// Returns -1 if the value is not found.

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@ -31,6 +31,34 @@ fn char_at() {
.test()
}
#[test]
fn code_point_at() {
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 string_code_point_at(this: &js::JsString, pos: u32) -> JsValue {
this.code_point_at(pos)
}
"#)
.file("test.ts", r#"
import * as assert from "assert";
import * as wasm from "./out";
export function test() {
assert.equal(wasm.string_code_point_at('ABC', 1), 66);
assert.equal(wasm.string_code_point_at('\uD800\uDC00', 0), 65536);
assert.equal(wasm.string_code_point_at('XYZ', 42), undefined);
}
"#)
.test()
}
#[test]
fn starts_with() {
project()