| // Copyright 2023 the Vello Authors |
| // SPDX-License-Identifier: Apache-2.0 OR MIT |
| |
| use std::path::Path; |
| use std::time::Duration; |
| |
| use anyhow::Result; |
| use notify_debouncer_mini::notify::*; |
| use notify_debouncer_mini::{new_debouncer, DebounceEventResult}; |
| |
| pub(crate) fn hot_reload(mut f: impl FnMut() -> Option<()> + Send + 'static) -> Result<impl Sized> { |
| let mut debouncer = new_debouncer( |
| Duration::from_millis(500), |
| None, |
| move |res: DebounceEventResult| match res { |
| Ok(_) => f().unwrap(), |
| Err(errors) => errors.iter().for_each(|e| println!("Error {:?}", e)), |
| }, |
| )?; |
| |
| debouncer.watcher().watch( |
| &Path::new(env!("CARGO_MANIFEST_DIR")) |
| .join("../../shader") |
| .canonicalize()?, |
| // We currently don't support hot reloading the imports, so don't recurse into there |
| RecursiveMode::NonRecursive, |
| )?; |
| Ok(debouncer) |
| } |