use std::{path::Path, sync::Arc}; use anyhow::Result;use collections::HashMap;use gpui::{App, Global, ReadGlobal, UpdateGlobal};use parking_lot::RwLock; use crate::{file_stem_to_key, Snippet, SnippetKind}; struct GlobalSnippetRegistry(Arc<SnippetRegistry>); impl Global for GlobalSnippetRegistry {} #[derive(Default)]pub struct SnippetRegistry {    snippets: RwLock<HashMap<SnippetKind, Vec<Arc<Snippet>>>>,} impl SnippetRegistry {    pub fn global(cx: &App) -> Arc<Self> {        GlobalSnippetRegistry::global(cx).0.clone()    }     pub fn try_global(cx: &App) -> Option<Arc<Self>> {        cx.try_global::<GlobalSnippetRegistry>()            .map(|registry| registry.0.clone())    }     pub fn init_global(cx: &mut App) {        GlobalSnippetRegistry::set_global(cx, GlobalSnippetRegistry(Arc::new(Self::new())))    }     pub fn new() -> Self {        Self {            snippets: RwLock::new(HashMap::default()),        }    }     pub fn register_snippets(&self, file_path: &Path, contents: &str) -> Result<()> {        let snippets_in_file: crate::format::VSSnippetsFile =            serde_json_lenient::from_str(contents)?;        let kind = file_path            .file_stem()            .and_then(|stem| stem.to_str().and_then(file_stem_to_key));        let snippets = crate::file_to_snippets(snippets_in_file);        self.snippets.write().insert(kind, snippets);         Ok(())    }     pub fn get_snippets(&self, kind: &SnippetKind) -> Vec<Arc<Snippet>> {        self.snippets.read().get(kind).cloned().unwrap_or_default()    }}