fyrox-impl 1.0.1

// Copyright (c) 2019-present Dmitry Stepanov and Fyrox Engine contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

#![cfg(target_arch = "wasm32")]

use crate::core::wasm_bindgen::{self, prelude::*};

#[wasm_bindgen]
extern "C" {
    #[wasm_bindgen(js_namespace = console)]
    fn error(msg: String);

    type Error;

    #[wasm_bindgen(constructor)]
    fn new() -> Error;

    #[wasm_bindgen(structural, method, getter)]
    fn stack(error: &Error) -> String;
}

fn custom_panic_hook(info: &std::panic::PanicHookInfo) {
    let mut msg = info.to_string();
    msg.push_str("\n\nStack:\n\n");
    let e = Error::new();
    let stack = e.stack();
    msg.push_str(&stack);
    msg.push_str("\n\n");
    error(msg);
}

#[inline]
pub(super) fn set_panic_hook() {
    use std::sync::Once;
    static SET_HOOK: Once = Once::new();
    SET_HOOK.call_once(|| {
        std::panic::set_hook(Box::new(custom_panic_hook));
    });
}