Port project_symbols (#3634)

Release Notes:

- N/A

Cargo.lock

@@ -6510,6 +6510,7 @@ dependencies = [
  "theme2",
  "ui2",
  "util",
+ "workspace2",
 ]
 
 [[package]]
@@ -7019,6 +7020,29 @@ dependencies = [
  "workspace",
 ]
 
+[[package]]
+name = "project_symbols2"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "editor2",
+ "futures 0.3.28",
+ "fuzzy2",
+ "gpui2",
+ "language2",
+ "lsp2",
+ "ordered-float 2.10.0",
+ "picker2",
+ "postage",
+ "project2",
+ "settings2",
+ "smol",
+ "text2",
+ "theme2",
+ "util",
+ "workspace2",
+]
+
 [[package]]
 name = "prometheus"
 version = "0.13.3"
@@ -12081,6 +12105,7 @@ dependencies = [
  "postage",
  "project2",
  "project_panel2",
+ "project_symbols2",
  "quick_action_bar2",
  "rand 0.8.5",
  "recent_projects2",

Cargo.toml

@@ -90,6 +90,7 @@ members = [
     "crates/project_panel",
     "crates/project_panel2",
     "crates/project_symbols",
+    "crates/project_symbols2",
     "crates/quick_action_bar2",
     "crates/recent_projects",
     "crates/recent_projects2",

crates/picker2/Cargo.toml

@@ -16,6 +16,7 @@ menu = { package = "menu2", path = "../menu2" }
 settings = { package = "settings2", path = "../settings2" }
 util = { path = "../util" }
 theme = { package = "theme2", path = "../theme2" }
+workspace = { package = "workspace2", path = "../workspace2"}
 
 parking_lot.workspace = true
 

crates/picker2/src/picker2.rs

@@ -1,11 +1,12 @@
 use editor::Editor;
 use gpui::{
     div, prelude::*, rems, uniform_list, AnyElement, AppContext, DismissEvent, Div, EventEmitter,
-    FocusHandle, FocusableView, MouseButton, MouseDownEvent, Render, Task, UniformListScrollHandle,
+    FocusHandle, FocusableView, Length, MouseButton, MouseDownEvent, Render, Task,
-    View, ViewContext, WindowContext,
+    UniformListScrollHandle, View, ViewContext, WindowContext,
 };
 use std::{cmp, sync::Arc};
 use ui::{prelude::*, v_stack, Color, Divider, Label};
+use workspace::ModalView;
 
 pub struct Picker<D: PickerDelegate> {
     pub delegate: D,
@@ -13,6 +14,7 @@ pub struct Picker<D: PickerDelegate> {
     editor: View<Editor>,
     pending_update_matches: Option<Task<()>>,
     confirm_on_update: Option<bool>,
+    width: Option<Length>,
 }
 
 pub trait PickerDelegate: Sized + 'static {
@@ -55,11 +57,17 @@ impl<D: PickerDelegate> Picker<D> {
             scroll_handle: UniformListScrollHandle::new(),
             pending_update_matches: None,
             confirm_on_update: None,
+            width: None,
         };
         this.update_matches("".to_string(), cx);
         this
     }
 
+    pub fn width(mut self, width: impl Into<gpui::Length>) -> Self {
+        self.width = Some(width.into());
+        self
+    }
+
     pub fn focus(&self, cx: &mut WindowContext) {
         self.editor.update(cx, |editor, cx| editor.focus(cx));
     }
@@ -197,6 +205,7 @@ impl<D: PickerDelegate> Picker<D> {
 }
 
 impl<D: PickerDelegate> EventEmitter<DismissEvent> for Picker<D> {}
+impl<D: PickerDelegate> ModalView for Picker<D> {}
 
 impl<D: PickerDelegate> Render for Picker<D> {
     type Element = Div;
@@ -221,6 +230,9 @@ impl<D: PickerDelegate> Render for Picker<D> {
         div()
             .key_context("picker")
             .size_full()
+            .when_some(self.width, |el, width| {
+                el.w(width)
+            })
             .overflow_hidden()
             .elevation_3(cx)
             .on_action(cx.listener(Self::select_next))

crates/project_symbols2/Cargo.toml

@@ -0,0 +1,37 @@
+[package]
+name = "project_symbols2"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[lib]
+path = "src/project_symbols.rs"
+doctest = false
+
+[dependencies]
+editor = { package = "editor2", path = "../editor2" }
+fuzzy = {package = "fuzzy2",  path = "../fuzzy2" }
+gpui = {package = "gpui2",  path = "../gpui2" }
+picker = {package = "picker2",  path = "../picker2" }
+project = { package = "project2", path = "../project2" }
+text = {package = "text2",  path = "../text2" }
+settings = {package = "settings2",  path = "../settings2" }
+workspace = {package = "workspace2",  path = "../workspace2" }
+theme = { package = "theme2", path = "../theme2" }
+util = { path = "../util" }
+
+anyhow.workspace = true
+ordered-float.workspace = true
+postage.workspace = true
+smol.workspace = true
+
+[dev-dependencies]
+futures.workspace = true
+editor = { package = "editor2", path = "../editor2", features = ["test-support"] }
+settings = { package = "settings2", path = "../settings2", features = ["test-support"] }
+gpui = { package = "gpui2", path = "../gpui2", features = ["test-support"] }
+language = { package = "language2", path = "../language2", features = ["test-support"] }
+lsp = { package = "lsp2", path = "../lsp2", features = ["test-support"] }
+project = { package = "project2", path = "../project2", features = ["test-support"] }
+theme = { package = "theme2", path = "../theme2", features = ["test-support"] }
+workspace = { package = "workspace2",  path = "../workspace2", features = ["test-support"] }

crates/project_symbols2/src/project_symbols.rs

@@ -0,0 +1,411 @@
+use editor::{scroll::autoscroll::Autoscroll, styled_runs_for_code_label, Bias, Editor};
+use fuzzy::{StringMatch, StringMatchCandidate};
+use gpui::{
+    actions, rems, AppContext, DismissEvent, FontWeight, Model, ParentElement, StyledText, Task,
+    View, ViewContext, WeakView,
+};
+use ordered_float::OrderedFloat;
+use picker::{Picker, PickerDelegate};
+use project::{Project, Symbol};
+use std::{borrow::Cow, cmp::Reverse, sync::Arc};
+use theme::ActiveTheme;
+use util::ResultExt;
+use workspace::{
+    ui::{v_stack, Color, Label, LabelCommon, LabelLike, ListItem, Selectable},
+    Workspace,
+};
+
+actions!(project_symbols, [Toggle]);
+
+pub fn init(cx: &mut AppContext) {
+    cx.observe_new_views(
+        |workspace: &mut Workspace, _: &mut ViewContext<Workspace>| {
+            workspace.register_action(|workspace, _: &Toggle, cx| {
+                let project = workspace.project().clone();
+                let handle = cx.view().downgrade();
+                workspace.toggle_modal(cx, move |cx| {
+                    let delegate = ProjectSymbolsDelegate::new(handle, project);
+                    Picker::new(delegate, cx).width(rems(34.))
+                })
+            });
+        },
+    )
+    .detach();
+}
+
+pub type ProjectSymbols = View<Picker<ProjectSymbolsDelegate>>;
+
+pub struct ProjectSymbolsDelegate {
+    workspace: WeakView<Workspace>,
+    project: Model<Project>,
+    selected_match_index: usize,
+    symbols: Vec<Symbol>,
+    visible_match_candidates: Vec<StringMatchCandidate>,
+    external_match_candidates: Vec<StringMatchCandidate>,
+    show_worktree_root_name: bool,
+    matches: Vec<StringMatch>,
+}
+
+impl ProjectSymbolsDelegate {
+    fn new(workspace: WeakView<Workspace>, project: Model<Project>) -> Self {
+        Self {
+            workspace,
+            project,
+            selected_match_index: 0,
+            symbols: Default::default(),
+            visible_match_candidates: Default::default(),
+            external_match_candidates: Default::default(),
+            matches: Default::default(),
+            show_worktree_root_name: false,
+        }
+    }
+
+    fn filter(&mut self, query: &str, cx: &mut ViewContext<Picker<Self>>) {
+        const MAX_MATCHES: usize = 100;
+        let mut visible_matches = cx.background_executor().block(fuzzy::match_strings(
+            &self.visible_match_candidates,
+            query,
+            false,
+            MAX_MATCHES,
+            &Default::default(),
+            cx.background_executor().clone(),
+        ));
+        let mut external_matches = cx.background_executor().block(fuzzy::match_strings(
+            &self.external_match_candidates,
+            query,
+            false,
+            MAX_MATCHES - visible_matches.len().min(MAX_MATCHES),
+            &Default::default(),
+            cx.background_executor().clone(),
+        ));
+        let sort_key_for_match = |mat: &StringMatch| {
+            let symbol = &self.symbols[mat.candidate_id];
+            (
+                Reverse(OrderedFloat(mat.score)),
+                &symbol.label.text[symbol.label.filter_range.clone()],
+            )
+        };
+
+        visible_matches.sort_unstable_by_key(sort_key_for_match);
+        external_matches.sort_unstable_by_key(sort_key_for_match);
+        let mut matches = visible_matches;
+        matches.append(&mut external_matches);
+
+        for mat in &mut matches {
+            let symbol = &self.symbols[mat.candidate_id];
+            let filter_start = symbol.label.filter_range.start;
+            for position in &mut mat.positions {
+                *position += filter_start;
+            }
+        }
+
+        self.matches = matches;
+        self.set_selected_index(0, cx);
+    }
+}
+
+impl PickerDelegate for ProjectSymbolsDelegate {
+    type ListItem = ListItem;
+    fn placeholder_text(&self) -> Arc<str> {
+        "Search project symbols...".into()
+    }
+
+    fn confirm(&mut self, secondary: bool, cx: &mut ViewContext<Picker<Self>>) {
+        if let Some(symbol) = self
+            .matches
+            .get(self.selected_match_index)
+            .map(|mat| self.symbols[mat.candidate_id].clone())
+        {
+            let buffer = self.project.update(cx, |project, cx| {
+                project.open_buffer_for_symbol(&symbol, cx)
+            });
+            let symbol = symbol.clone();
+            let workspace = self.workspace.clone();
+            cx.spawn(|_, mut cx| async move {
+                let buffer = buffer.await?;
+                workspace.update(&mut cx, |workspace, cx| {
+                    let position = buffer
+                        .read(cx)
+                        .clip_point_utf16(symbol.range.start, Bias::Left);
+
+                    let editor = if secondary {
+                        workspace.split_project_item::<Editor>(buffer, cx)
+                    } else {
+                        workspace.open_project_item::<Editor>(buffer, cx)
+                    };
+
+                    editor.update(cx, |editor, cx| {
+                        editor.change_selections(Some(Autoscroll::center()), cx, |s| {
+                            s.select_ranges([position..position])
+                        });
+                    });
+                })?;
+                Ok::<_, anyhow::Error>(())
+            })
+            .detach_and_log_err(cx);
+            cx.emit(DismissEvent);
+        }
+    }
+
+    fn dismissed(&mut self, _cx: &mut ViewContext<Picker<Self>>) {}
+
+    fn match_count(&self) -> usize {
+        self.matches.len()
+    }
+
+    fn selected_index(&self) -> usize {
+        self.selected_match_index
+    }
+
+    fn set_selected_index(&mut self, ix: usize, _cx: &mut ViewContext<Picker<Self>>) {
+        self.selected_match_index = ix;
+    }
+
+    fn update_matches(&mut self, query: String, cx: &mut ViewContext<Picker<Self>>) -> Task<()> {
+        self.filter(&query, cx);
+        self.show_worktree_root_name = self.project.read(cx).visible_worktrees(cx).count() > 1;
+        let symbols = self
+            .project
+            .update(cx, |project, cx| project.symbols(&query, cx));
+        cx.spawn(|this, mut cx| async move {
+            let symbols = symbols.await.log_err();
+            if let Some(symbols) = symbols {
+                this.update(&mut cx, |this, cx| {
+                    let delegate = &mut this.delegate;
+                    let project = delegate.project.read(cx);
+                    let (visible_match_candidates, external_match_candidates) = symbols
+                        .iter()
+                        .enumerate()
+                        .map(|(id, symbol)| {
+                            StringMatchCandidate::new(
+                                id,
+                                symbol.label.text[symbol.label.filter_range.clone()].to_string(),
+                            )
+                        })
+                        .partition(|candidate| {
+                            project
+                                .entry_for_path(&symbols[candidate.id].path, cx)
+                                .map_or(false, |e| !e.is_ignored)
+                        });
+
+                    delegate.visible_match_candidates = visible_match_candidates;
+                    delegate.external_match_candidates = external_match_candidates;
+                    delegate.symbols = symbols;
+                    delegate.filter(&query, cx);
+                })
+                .log_err();
+            }
+        })
+    }
+
+    fn render_match(
+        &self,
+        ix: usize,
+        selected: bool,
+        cx: &mut ViewContext<Picker<Self>>,
+    ) -> Option<Self::ListItem> {
+        let string_match = &self.matches[ix];
+        let symbol = &self.symbols[string_match.candidate_id];
+        let syntax_runs = styled_runs_for_code_label(&symbol.label, cx.theme().syntax());
+
+        let mut path = symbol.path.path.to_string_lossy();
+        if self.show_worktree_root_name {
+            let project = self.project.read(cx);
+            if let Some(worktree) = project.worktree_for_id(symbol.path.worktree_id, cx) {
+                path = Cow::Owned(format!(
+                    "{}{}{}",
+                    worktree.read(cx).root_name(),
+                    std::path::MAIN_SEPARATOR,
+                    path.as_ref()
+                ));
+            }
+        }
+        let label = symbol.label.text.clone();
+        let path = path.to_string().clone();
+
+        let highlights = gpui::combine_highlights(
+            string_match
+                .positions
+                .iter()
+                .map(|pos| (*pos..pos + 1, FontWeight::BOLD.into())),
+            syntax_runs.map(|(range, mut highlight)| {
+                // Ignore font weight for syntax highlighting, as we'll use it
+                // for fuzzy matches.
+                highlight.font_weight = None;
+                (range, highlight)
+            }),
+        );
+
+        Some(
+            ListItem::new(ix).inset(true).selected(selected).child(
+                // todo!() combine_syntax_and_fuzzy_match_highlights()
+                v_stack()
+                    .child(
+                        LabelLike::new().child(
+                            StyledText::new(label)
+                                .with_highlights(&cx.text_style().clone(), highlights),
+                        ),
+                    )
+                    .child(Label::new(path).color(Color::Muted)),
+            ),
+        )
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use futures::StreamExt;
+    use gpui::{serde_json::json, TestAppContext, VisualContext};
+    use language::{FakeLspAdapter, Language, LanguageConfig};
+    use project::FakeFs;
+    use settings::SettingsStore;
+    use std::{path::Path, sync::Arc};
+
+    #[gpui::test]
+    async fn test_project_symbols(cx: &mut TestAppContext) {
+        init_test(cx);
+
+        let mut language = Language::new(
+            LanguageConfig {
+                name: "Rust".into(),
+                path_suffixes: vec!["rs".to_string()],
+                ..Default::default()
+            },
+            None,
+        );
+        let mut fake_servers = language
+            .set_fake_lsp_adapter(Arc::<FakeLspAdapter>::default())
+            .await;
+
+        let fs = FakeFs::new(cx.executor());
+        fs.insert_tree("/dir", json!({ "test.rs": "" })).await;
+
+        let project = Project::test(fs.clone(), ["/dir".as_ref()], cx).await;
+        project.update(cx, |project, _| project.languages().add(Arc::new(language)));
+
+        let _buffer = project
+            .update(cx, |project, cx| {
+                project.open_local_buffer("/dir/test.rs", cx)
+            })
+            .await
+            .unwrap();
+
+        // Set up fake language server to return fuzzy matches against
+        // a fixed set of symbol names.
+        let fake_symbols = [
+            symbol("one", "/external"),
+            symbol("ton", "/dir/test.rs"),
+            symbol("uno", "/dir/test.rs"),
+        ];
+        let fake_server = fake_servers.next().await.unwrap();
+        fake_server.handle_request::<lsp::WorkspaceSymbolRequest, _, _>(
+            move |params: lsp::WorkspaceSymbolParams, cx| {
+                let executor = cx.background_executor().clone();
+                let fake_symbols = fake_symbols.clone();
+                async move {
+                    let candidates = fake_symbols
+                        .iter()
+                        .enumerate()
+                        .map(|(id, symbol)| StringMatchCandidate::new(id, symbol.name.clone()))
+                        .collect::<Vec<_>>();
+                    let matches = if params.query.is_empty() {
+                        Vec::new()
+                    } else {
+                        fuzzy::match_strings(
+                            &candidates,
+                            &params.query,
+                            true,
+                            100,
+                            &Default::default(),
+                            executor.clone(),
+                        )
+                        .await
+                    };
+
+                    Ok(Some(lsp::WorkspaceSymbolResponse::Flat(
+                        matches
+                            .into_iter()
+                            .map(|mat| fake_symbols[mat.candidate_id].clone())
+                            .collect(),
+                    )))
+                }
+            },
+        );
+
+        let (workspace, cx) = cx.add_window_view(|cx| Workspace::test_new(project.clone(), cx));
+
+        // Create the project symbols view.
+        let symbols = cx.build_view(|cx| {
+            Picker::new(
+                ProjectSymbolsDelegate::new(workspace.downgrade(), project.clone()),
+                cx,
+            )
+        });
+
+        // Spawn multiples updates before the first update completes,
+        // such that in the end, there are no matches. Testing for regression:
+        // https://github.com/zed-industries/zed/issues/861
+        symbols.update(cx, |p, cx| {
+            p.update_matches("o".to_string(), cx);
+            p.update_matches("on".to_string(), cx);
+            p.update_matches("onex".to_string(), cx);
+        });
+
+        cx.run_until_parked();
+        symbols.update(cx, |symbols, _| {
+            assert_eq!(symbols.delegate.matches.len(), 0);
+        });
+
+        // Spawn more updates such that in the end, there are matches.
+        symbols.update(cx, |p, cx| {
+            p.update_matches("one".to_string(), cx);
+            p.update_matches("on".to_string(), cx);
+        });
+
+        cx.run_until_parked();
+        symbols.update(cx, |symbols, _| {
+            let delegate = &symbols.delegate;
+            assert_eq!(delegate.matches.len(), 2);
+            assert_eq!(delegate.matches[0].string, "ton");
+            assert_eq!(delegate.matches[1].string, "one");
+        });
+
+        // Spawn more updates such that in the end, there are again no matches.
+        symbols.update(cx, |p, cx| {
+            p.update_matches("o".to_string(), cx);
+            p.update_matches("".to_string(), cx);
+        });
+
+        cx.run_until_parked();
+        symbols.update(cx, |symbols, _| {
+            assert_eq!(symbols.delegate.matches.len(), 0);
+        });
+    }
+
+    fn init_test(cx: &mut TestAppContext) {
+        cx.update(|cx| {
+            let store = SettingsStore::test(cx);
+            cx.set_global(store);
+            theme::init(theme::LoadThemes::JustBase, cx);
+            language::init(cx);
+            Project::init_settings(cx);
+            workspace::init_settings(cx);
+        });
+    }
+
+    fn symbol(name: &str, path: impl AsRef<Path>) -> lsp::SymbolInformation {
+        #[allow(deprecated)]
+        lsp::SymbolInformation {
+            name: name.to_string(),
+            kind: lsp::SymbolKind::FUNCTION,
+            tags: None,
+            deprecated: None,
+            container_name: None,
+            location: lsp::Location::new(
+                lsp::Url::from_file_path(path.as_ref()).unwrap(),
+                lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
+            ),
+        }
+    }
+}

crates/zed2/Cargo.toml

@@ -55,7 +55,7 @@ outline = { package = "outline2", path = "../outline2" }
 # plugin_runtime = { path = "../plugin_runtime",optional = true }
 project = { package = "project2", path = "../project2" }
 project_panel = { package = "project_panel2", path = "../project_panel2" }
-# project_symbols = { path = "../project_symbols" }
+project_symbols = { package = "project_symbols2", path = "../project_symbols2" }
 quick_action_bar = { package = "quick_action_bar2", path = "../quick_action_bar2" }
 recent_projects = { package = "recent_projects2", path = "../recent_projects2" }
 rope = { package = "rope2", path = "../rope2"}

crates/zed2/src/main.rs

@@ -205,7 +205,7 @@ fn main() {
         go_to_line::init(cx);
         file_finder::init(cx);
         outline::init(cx);
-        // project_symbols::init(cx);
+        project_symbols::init(cx);
         project_panel::init(Assets, cx);
         channel::init(&client, user_store.clone(), cx);
         // diagnostics::init(cx);