Crate wasm_bindgen_duck_type
source · [−]Expand description
Macro to automatically generate duck type interfaces with wasm_bindgen
Usage
The [wasm_bindgen_duck_type]
attribute macro can be applied to structs to generate the duck type interface for the struct.
Example
JavaScript:
function MyFun() {
return {
number: 20,
fun: () => {
console.log("Hello, World!")
}
};
}
function GetNumber(input) {
return input.number
}
Rust:
use wasm_bindgen_duck_type::wasm_bindgen_duck_type;
use wasm_bindgen::prelude::*;
#[wasm_bindgen]
extern "C" {
fn MyFun() -> MyType;
fn GetNumber(input: MyType) -> i32;
}
#[wasm_bindgen_duck_type]
struct MyType {
number: i32,
fun: js_sys::Function,
}
fn main() {
let result = MyFun();
result.fun().call0(&JsValue::NULL);
result.set_number(10);
let input = MyType::default(); // All fields are null / default
let input = MyType::new(
42,
JsValue::NULL.into() // Pass a function
);
let num = GetNumber(input); // 42
}
Attribute Macros
Attribute macro to generate duck type interface