Snippets: Move snippets into the core of editor (#13937)

Release Notes:

- Move snippet support into core editor experience, marking the official
extension as deprecated. Snippets now show up in any buffer (including
plain text buffers).

crates/project/src/project.rs

@@ -19,7 +19,7 @@ use client::{
     TypedEnvelope, UserStore,
 };
 use clock::ReplicaId;
-use collections::{btree_map, hash_map, BTreeMap, HashMap, HashSet, VecDeque};
+use collections::{btree_map, hash_map, BTreeMap, BTreeSet, HashMap, HashSet, VecDeque};
 use debounced_delay::DebouncedDelay;
 use futures::{
     channel::{
@@ -84,6 +84,7 @@ use similar::{ChangeTag, TextDiff};
 use smol::channel::{Receiver, Sender};
 use smol::lock::Semaphore;
 use snippet::Snippet;
+use snippet_provider::SnippetProvider;
 use std::{
     borrow::Cow,
     cmp::{self, Ordering},
@@ -229,6 +230,7 @@ pub struct Project {
     hosted_project_id: Option<ProjectId>,
     dev_server_project_id: Option<client::DevServerProjectId>,
     search_history: SearchHistory,
+    snippets: Model<SnippetProvider>,
 }
 
 pub enum LanguageServerToQuery {
@@ -719,7 +721,9 @@ impl Project {
             cx.spawn(move |this, cx| Self::send_buffer_ordered_messages(this, rx, cx))
                 .detach();
             let tasks = Inventory::new(cx);
-
+            let global_snippets_dir = paths::config_dir().join("snippets");
+            let snippets =
+                SnippetProvider::new(fs.clone(), BTreeSet::from_iter([global_snippets_dir]), cx);
             Self {
                 worktrees: Vec::new(),
                 worktrees_reordered: false,
@@ -745,6 +749,7 @@ impl Project {
                 _maintain_buffer_languages: Self::maintain_buffer_languages(languages.clone(), cx),
                 _maintain_workspace_config: Self::maintain_workspace_config(cx),
                 active_entry: None,
+                snippets,
                 languages,
                 client,
                 user_store,
@@ -841,6 +846,9 @@ impl Project {
         let this = cx.new_model(|cx| {
             let replica_id = response.payload.replica_id as ReplicaId;
             let tasks = Inventory::new(cx);
+            let global_snippets_dir = paths::config_dir().join("snippets");
+            let snippets =
+                SnippetProvider::new(fs.clone(), BTreeSet::from_iter([global_snippets_dir]), cx);
             // BIG CAUTION NOTE: The order in which we initialize fields here matters and it should match what's done in Self::local.
             // Otherwise, you might run into issues where worktree id on remote is different than what's on local host.
             // That's because Worktree's identifier is entity id, which should probably be changed.
@@ -859,6 +867,7 @@ impl Project {
             let (tx, rx) = mpsc::unbounded();
             cx.spawn(move |this, cx| Self::send_buffer_ordered_messages(this, rx, cx))
                 .detach();
+
             let mut this = Self {
                 worktrees: Vec::new(),
                 worktrees_reordered: false,
@@ -877,6 +886,7 @@ impl Project {
                 _maintain_workspace_config: Self::maintain_workspace_config(cx),
                 languages,
                 user_store: user_store.clone(),
+                snippets,
                 fs,
                 next_entry_id: Default::default(),
                 next_diagnostic_group_id: Default::default(),
@@ -1336,6 +1346,10 @@ impl Project {
         &self.tasks
     }
 
+    pub fn snippets(&self) -> &Model<SnippetProvider> {
+        &self.snippets
+    }
+
     pub fn search_history(&self) -> &SearchHistory {
         &self.search_history
     }