03c84466c2
While this lint is allow-by-default, it seems pretty useful to get rid of mutable borrows when they're not needed. Closes #ISSUE Release Notes: - N/A
4469 lines
162 KiB
Rust
4469 lines
162 KiB
Rust
pub use crate::{
|
||
diagnostic_set::DiagnosticSet,
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||
highlight_map::{HighlightId, HighlightMap},
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||
markdown::ParsedMarkdown,
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||
proto, Grammar, Language, LanguageRegistry,
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||
};
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use crate::{
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||
diagnostic_set::{DiagnosticEntry, DiagnosticGroup},
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||
language_settings::{language_settings, IndentGuideSettings, LanguageSettings},
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||
markdown::parse_markdown,
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||
outline::OutlineItem,
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||
syntax_map::{
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||
SyntaxLayer, SyntaxMap, SyntaxMapCapture, SyntaxMapCaptures, SyntaxMapMatch,
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||
SyntaxMapMatches, SyntaxSnapshot, ToTreeSitterPoint,
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||
},
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||
task_context::RunnableRange,
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||
LanguageScope, Outline, OutlineConfig, RunnableCapture, RunnableTag,
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||
};
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||
use anyhow::{anyhow, Context, Result};
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||
use async_watch as watch;
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||
pub use clock::ReplicaId;
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||
use futures::channel::oneshot;
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||
use gpui::{
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AnyElement, AppContext, Context as _, EventEmitter, HighlightStyle, Model, ModelContext,
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||
Pixels, Task, TaskLabel, WindowContext,
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||
};
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||
use lsp::LanguageServerId;
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||
use parking_lot::Mutex;
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||
use schemars::JsonSchema;
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||
use serde::{Deserialize, Serialize};
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||
use serde_json::Value;
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||
use settings::WorktreeId;
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||
use similar::{ChangeTag, TextDiff};
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||
use smallvec::SmallVec;
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||
use smol::future::yield_now;
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||
use std::{
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||
any::Any,
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||
cell::Cell,
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||
cmp::{self, Ordering, Reverse},
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||
collections::BTreeMap,
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||
ffi::OsStr,
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||
fmt,
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||
future::Future,
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||
iter::{self, Iterator, Peekable},
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||
mem,
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||
ops::{Deref, DerefMut, Range},
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||
path::{Path, PathBuf},
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||
str,
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||
sync::{Arc, LazyLock},
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||
time::{Duration, Instant, SystemTime},
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vec,
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||
};
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||
use sum_tree::TreeMap;
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||
use text::operation_queue::OperationQueue;
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use text::*;
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pub use text::{
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Anchor, Bias, Buffer as TextBuffer, BufferId, BufferSnapshot as TextBufferSnapshot, Edit,
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OffsetRangeExt, OffsetUtf16, Patch, Point, PointUtf16, Rope, Selection, SelectionGoal,
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||
Subscription, TextDimension, TextSummary, ToOffset, ToOffsetUtf16, ToPoint, ToPointUtf16,
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Transaction, TransactionId, Unclipped,
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};
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use theme::SyntaxTheme;
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#[cfg(any(test, feature = "test-support"))]
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use util::RandomCharIter;
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use util::{debug_panic, RangeExt};
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#[cfg(any(test, feature = "test-support"))]
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pub use {tree_sitter_rust, tree_sitter_typescript};
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pub use lsp::DiagnosticSeverity;
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/// A label for the background task spawned by the buffer to compute
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/// a diff against the contents of its file.
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pub static BUFFER_DIFF_TASK: LazyLock<TaskLabel> = LazyLock::new(TaskLabel::new);
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/// Indicate whether a [`Buffer`] has permissions to edit.
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#[derive(PartialEq, Clone, Copy, Debug)]
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pub enum Capability {
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/// The buffer is a mutable replica.
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ReadWrite,
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/// The buffer is a read-only replica.
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ReadOnly,
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}
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pub type BufferRow = u32;
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#[derive(Clone)]
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enum BufferDiffBase {
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Git(Rope),
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PastBufferVersion {
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buffer: Model<Buffer>,
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rope: Rope,
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operations_to_ignore: Vec<clock::Lamport>,
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},
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}
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/// An in-memory representation of a source code file, including its text,
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/// syntax trees, git status, and diagnostics.
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pub struct Buffer {
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text: TextBuffer,
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diff_base: Option<BufferDiffBase>,
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git_diff: git::diff::BufferDiff,
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file: Option<Arc<dyn File>>,
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/// The mtime of the file when this buffer was last loaded from
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/// or saved to disk.
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saved_mtime: Option<SystemTime>,
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/// The version vector when this buffer was last loaded from
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/// or saved to disk.
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saved_version: clock::Global,
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preview_version: clock::Global,
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transaction_depth: usize,
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was_dirty_before_starting_transaction: Option<bool>,
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reload_task: Option<Task<Result<()>>>,
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language: Option<Arc<Language>>,
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autoindent_requests: Vec<Arc<AutoindentRequest>>,
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pending_autoindent: Option<Task<()>>,
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sync_parse_timeout: Duration,
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syntax_map: Mutex<SyntaxMap>,
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parsing_in_background: bool,
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||
parse_status: (watch::Sender<ParseStatus>, watch::Receiver<ParseStatus>),
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||
non_text_state_update_count: usize,
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diagnostics: SmallVec<[(LanguageServerId, DiagnosticSet); 2]>,
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remote_selections: TreeMap<ReplicaId, SelectionSet>,
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diagnostics_timestamp: clock::Lamport,
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completion_triggers: Vec<String>,
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||
completion_triggers_timestamp: clock::Lamport,
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deferred_ops: OperationQueue<Operation>,
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capability: Capability,
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has_conflict: bool,
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diff_base_version: usize,
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/// Memoize calls to has_changes_since(saved_version).
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/// The contents of a cell are (self.version, has_changes) at the time of a last call.
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has_unsaved_edits: Cell<(clock::Global, bool)>,
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_subscriptions: Vec<gpui::Subscription>,
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}
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#[derive(Copy, Clone, Debug, PartialEq, Eq)]
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pub enum ParseStatus {
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Idle,
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Parsing,
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}
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/// An immutable, cheaply cloneable representation of a fixed
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/// state of a buffer.
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pub struct BufferSnapshot {
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text: text::BufferSnapshot,
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git_diff: git::diff::BufferDiff,
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pub(crate) syntax: SyntaxSnapshot,
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file: Option<Arc<dyn File>>,
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diagnostics: SmallVec<[(LanguageServerId, DiagnosticSet); 2]>,
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remote_selections: TreeMap<ReplicaId, SelectionSet>,
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language: Option<Arc<Language>>,
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non_text_state_update_count: usize,
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}
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/// The kind and amount of indentation in a particular line. For now,
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/// assumes that indentation is all the same character.
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#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, Default)]
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pub struct IndentSize {
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/// The number of bytes that comprise the indentation.
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pub len: u32,
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/// The kind of whitespace used for indentation.
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pub kind: IndentKind,
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}
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/// A whitespace character that's used for indentation.
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#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, Default)]
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pub enum IndentKind {
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/// An ASCII space character.
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#[default]
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Space,
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/// An ASCII tab character.
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Tab,
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}
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/// The shape of a selection cursor.
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#[derive(Copy, Clone, Debug, Default, Serialize, Deserialize, PartialEq, Eq, JsonSchema)]
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#[serde(rename_all = "snake_case")]
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pub enum CursorShape {
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/// A vertical bar
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#[default]
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Bar,
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/// A block that surrounds the following character
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Block,
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/// An underline that runs along the following character
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Underscore,
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/// A box drawn around the following character
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Hollow,
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}
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#[derive(Clone, Debug)]
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struct SelectionSet {
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line_mode: bool,
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cursor_shape: CursorShape,
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selections: Arc<[Selection<Anchor>]>,
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lamport_timestamp: clock::Lamport,
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}
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/// A diagnostic associated with a certain range of a buffer.
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#[derive(Clone, Debug, PartialEq, Eq)]
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pub struct Diagnostic {
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/// The name of the service that produced this diagnostic.
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pub source: Option<String>,
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/// A machine-readable code that identifies this diagnostic.
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pub code: Option<String>,
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/// Whether this diagnostic is a hint, warning, or error.
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pub severity: DiagnosticSeverity,
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/// The human-readable message associated with this diagnostic.
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pub message: String,
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/// An id that identifies the group to which this diagnostic belongs.
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///
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/// When a language server produces a diagnostic with
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/// one or more associated diagnostics, those diagnostics are all
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/// assigned a single group ID.
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pub group_id: usize,
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/// Whether this diagnostic is the primary diagnostic for its group.
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///
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/// In a given group, the primary diagnostic is the top-level diagnostic
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/// returned by the language server. The non-primary diagnostics are the
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/// associated diagnostics.
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pub is_primary: bool,
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/// Whether this diagnostic is considered to originate from an analysis of
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/// files on disk, as opposed to any unsaved buffer contents. This is a
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/// property of a given diagnostic source, and is configured for a given
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/// language server via the [`LspAdapter::disk_based_diagnostic_sources`](crate::LspAdapter::disk_based_diagnostic_sources) method
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/// for the language server.
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pub is_disk_based: bool,
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/// Whether this diagnostic marks unnecessary code.
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pub is_unnecessary: bool,
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/// Data from language server that produced this diagnostic. Passed back to the LS when we request code actions for this diagnostic.
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pub data: Option<Value>,
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}
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/// TODO - move this into the `project` crate and make it private.
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pub async fn prepare_completion_documentation(
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documentation: &lsp::Documentation,
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language_registry: &Arc<LanguageRegistry>,
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language: Option<Arc<Language>>,
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) -> Documentation {
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match documentation {
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lsp::Documentation::String(text) => {
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if text.lines().count() <= 1 {
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Documentation::SingleLine(text.clone())
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} else {
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Documentation::MultiLinePlainText(text.clone())
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}
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}
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lsp::Documentation::MarkupContent(lsp::MarkupContent { kind, value }) => match kind {
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lsp::MarkupKind::PlainText => {
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if value.lines().count() <= 1 {
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Documentation::SingleLine(value.clone())
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} else {
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Documentation::MultiLinePlainText(value.clone())
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}
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}
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lsp::MarkupKind::Markdown => {
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let parsed = parse_markdown(value, language_registry, language).await;
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Documentation::MultiLineMarkdown(parsed)
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}
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},
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}
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}
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/// Documentation associated with a [`Completion`].
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#[derive(Clone, Debug)]
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pub enum Documentation {
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/// There is no documentation for this completion.
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Undocumented,
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/// A single line of documentation.
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SingleLine(String),
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/// Multiple lines of plain text documentation.
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MultiLinePlainText(String),
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/// Markdown documentation.
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MultiLineMarkdown(ParsedMarkdown),
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}
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/// An operation used to synchronize this buffer with its other replicas.
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#[derive(Clone, Debug, PartialEq)]
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pub enum Operation {
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/// A text operation.
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Buffer(text::Operation),
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/// An update to the buffer's diagnostics.
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UpdateDiagnostics {
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/// The id of the language server that produced the new diagnostics.
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server_id: LanguageServerId,
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/// The diagnostics.
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diagnostics: Arc<[DiagnosticEntry<Anchor>]>,
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/// The buffer's lamport timestamp.
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lamport_timestamp: clock::Lamport,
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},
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||
|
||
/// An update to the most recent selections in this buffer.
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UpdateSelections {
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/// The selections.
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selections: Arc<[Selection<Anchor>]>,
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/// The buffer's lamport timestamp.
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||
lamport_timestamp: clock::Lamport,
|
||
/// Whether the selections are in 'line mode'.
|
||
line_mode: bool,
|
||
/// The [`CursorShape`] associated with these selections.
|
||
cursor_shape: CursorShape,
|
||
},
|
||
|
||
/// An update to the characters that should trigger autocompletion
|
||
/// for this buffer.
|
||
UpdateCompletionTriggers {
|
||
/// The characters that trigger autocompletion.
|
||
triggers: Vec<String>,
|
||
/// The buffer's lamport timestamp.
|
||
lamport_timestamp: clock::Lamport,
|
||
},
|
||
}
|
||
|
||
/// An event that occurs in a buffer.
|
||
#[derive(Clone, Debug, PartialEq)]
|
||
pub enum BufferEvent {
|
||
/// The buffer was changed in a way that must be
|
||
/// propagated to its other replicas.
|
||
Operation {
|
||
operation: Operation,
|
||
is_local: bool,
|
||
},
|
||
/// The buffer was edited.
|
||
Edited,
|
||
/// The buffer's `dirty` bit changed.
|
||
DirtyChanged,
|
||
/// The buffer was saved.
|
||
Saved,
|
||
/// The buffer's file was changed on disk.
|
||
FileHandleChanged,
|
||
/// The buffer was reloaded.
|
||
Reloaded,
|
||
/// The buffer's diff_base changed.
|
||
DiffBaseChanged,
|
||
/// Buffer's excerpts for a certain diff base were recalculated.
|
||
DiffUpdated,
|
||
/// The buffer's language was changed.
|
||
LanguageChanged,
|
||
/// The buffer's syntax trees were updated.
|
||
Reparsed,
|
||
/// The buffer's diagnostics were updated.
|
||
DiagnosticsUpdated,
|
||
/// The buffer gained or lost editing capabilities.
|
||
CapabilityChanged,
|
||
/// The buffer was explicitly requested to close.
|
||
Closed,
|
||
/// The buffer was discarded when closing.
|
||
Discarded,
|
||
}
|
||
|
||
/// The file associated with a buffer.
|
||
pub trait File: Send + Sync {
|
||
/// Returns the [`LocalFile`] associated with this file, if the
|
||
/// file is local.
|
||
fn as_local(&self) -> Option<&dyn LocalFile>;
|
||
|
||
/// Returns whether this file is local.
|
||
fn is_local(&self) -> bool {
|
||
self.as_local().is_some()
|
||
}
|
||
|
||
/// Returns the file's mtime.
|
||
fn mtime(&self) -> Option<SystemTime>;
|
||
|
||
/// Returns the path of this file relative to the worktree's root directory.
|
||
fn path(&self) -> &Arc<Path>;
|
||
|
||
/// Returns the path of this file relative to the worktree's parent directory (this means it
|
||
/// includes the name of the worktree's root folder).
|
||
fn full_path(&self, cx: &AppContext) -> PathBuf;
|
||
|
||
/// Returns the last component of this handle's absolute path. If this handle refers to the root
|
||
/// of its worktree, then this method will return the name of the worktree itself.
|
||
fn file_name<'a>(&'a self, cx: &'a AppContext) -> &'a OsStr;
|
||
|
||
/// Returns the id of the worktree to which this file belongs.
|
||
///
|
||
/// This is needed for looking up project-specific settings.
|
||
fn worktree_id(&self, cx: &AppContext) -> WorktreeId;
|
||
|
||
/// Returns whether the file has been deleted.
|
||
fn is_deleted(&self) -> bool;
|
||
|
||
/// Returns whether the file existed on disk at one point
|
||
fn is_created(&self) -> bool {
|
||
self.mtime().is_some()
|
||
}
|
||
|
||
/// Converts this file into an [`Any`] trait object.
|
||
fn as_any(&self) -> &dyn Any;
|
||
|
||
/// Converts this file into a protobuf message.
|
||
fn to_proto(&self, cx: &AppContext) -> rpc::proto::File;
|
||
|
||
/// Return whether Zed considers this to be a private file.
|
||
fn is_private(&self) -> bool;
|
||
}
|
||
|
||
/// The file associated with a buffer, in the case where the file is on the local disk.
|
||
pub trait LocalFile: File {
|
||
/// Returns the absolute path of this file
|
||
fn abs_path(&self, cx: &AppContext) -> PathBuf;
|
||
|
||
/// Loads the file's contents from disk.
|
||
fn load(&self, cx: &AppContext) -> Task<Result<String>>;
|
||
|
||
/// Returns true if the file should not be shared with collaborators.
|
||
fn is_private(&self, _: &AppContext) -> bool {
|
||
false
|
||
}
|
||
}
|
||
|
||
/// The auto-indent behavior associated with an editing operation.
|
||
/// For some editing operations, each affected line of text has its
|
||
/// indentation recomputed. For other operations, the entire block
|
||
/// of edited text is adjusted uniformly.
|
||
#[derive(Clone, Debug)]
|
||
pub enum AutoindentMode {
|
||
/// Indent each line of inserted text.
|
||
EachLine,
|
||
/// Apply the same indentation adjustment to all of the lines
|
||
/// in a given insertion.
|
||
Block {
|
||
/// The original indentation level of the first line of each
|
||
/// insertion, if it has been copied.
|
||
original_indent_columns: Vec<u32>,
|
||
},
|
||
}
|
||
|
||
#[derive(Clone)]
|
||
struct AutoindentRequest {
|
||
before_edit: BufferSnapshot,
|
||
entries: Vec<AutoindentRequestEntry>,
|
||
is_block_mode: bool,
|
||
}
|
||
|
||
#[derive(Clone)]
|
||
struct AutoindentRequestEntry {
|
||
/// A range of the buffer whose indentation should be adjusted.
|
||
range: Range<Anchor>,
|
||
/// Whether or not these lines should be considered brand new, for the
|
||
/// purpose of auto-indent. When text is not new, its indentation will
|
||
/// only be adjusted if the suggested indentation level has *changed*
|
||
/// since the edit was made.
|
||
first_line_is_new: bool,
|
||
indent_size: IndentSize,
|
||
original_indent_column: Option<u32>,
|
||
}
|
||
|
||
#[derive(Debug)]
|
||
struct IndentSuggestion {
|
||
basis_row: u32,
|
||
delta: Ordering,
|
||
within_error: bool,
|
||
}
|
||
|
||
struct BufferChunkHighlights<'a> {
|
||
captures: SyntaxMapCaptures<'a>,
|
||
next_capture: Option<SyntaxMapCapture<'a>>,
|
||
stack: Vec<(usize, HighlightId)>,
|
||
highlight_maps: Vec<HighlightMap>,
|
||
}
|
||
|
||
/// An iterator that yields chunks of a buffer's text, along with their
|
||
/// syntax highlights and diagnostic status.
|
||
pub struct BufferChunks<'a> {
|
||
buffer_snapshot: Option<&'a BufferSnapshot>,
|
||
range: Range<usize>,
|
||
chunks: text::Chunks<'a>,
|
||
diagnostic_endpoints: Option<Peekable<vec::IntoIter<DiagnosticEndpoint>>>,
|
||
error_depth: usize,
|
||
warning_depth: usize,
|
||
information_depth: usize,
|
||
hint_depth: usize,
|
||
unnecessary_depth: usize,
|
||
highlights: Option<BufferChunkHighlights<'a>>,
|
||
}
|
||
|
||
/// A chunk of a buffer's text, along with its syntax highlight and
|
||
/// diagnostic status.
|
||
#[derive(Clone, Debug, Default)]
|
||
pub struct Chunk<'a> {
|
||
/// The text of the chunk.
|
||
pub text: &'a str,
|
||
/// The syntax highlighting style of the chunk.
|
||
pub syntax_highlight_id: Option<HighlightId>,
|
||
/// The highlight style that has been applied to this chunk in
|
||
/// the editor.
|
||
pub highlight_style: Option<HighlightStyle>,
|
||
/// The severity of diagnostic associated with this chunk, if any.
|
||
pub diagnostic_severity: Option<DiagnosticSeverity>,
|
||
/// Whether this chunk of text is marked as unnecessary.
|
||
pub is_unnecessary: bool,
|
||
/// Whether this chunk of text was originally a tab character.
|
||
pub is_tab: bool,
|
||
/// An optional recipe for how the chunk should be presented.
|
||
pub renderer: Option<ChunkRenderer>,
|
||
}
|
||
|
||
/// A recipe for how the chunk should be presented.
|
||
#[derive(Clone)]
|
||
pub struct ChunkRenderer {
|
||
/// creates a custom element to represent this chunk.
|
||
pub render: Arc<dyn Send + Sync + Fn(&mut ChunkRendererContext) -> AnyElement>,
|
||
/// If true, the element is constrained to the shaped width of the text.
|
||
pub constrain_width: bool,
|
||
}
|
||
|
||
pub struct ChunkRendererContext<'a, 'b> {
|
||
pub context: &'a mut WindowContext<'b>,
|
||
pub max_width: Pixels,
|
||
}
|
||
|
||
impl fmt::Debug for ChunkRenderer {
|
||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
||
f.debug_struct("ChunkRenderer")
|
||
.field("constrain_width", &self.constrain_width)
|
||
.finish()
|
||
}
|
||
}
|
||
|
||
impl<'a, 'b> Deref for ChunkRendererContext<'a, 'b> {
|
||
type Target = WindowContext<'b>;
|
||
|
||
fn deref(&self) -> &Self::Target {
|
||
self.context
|
||
}
|
||
}
|
||
|
||
impl<'a, 'b> DerefMut for ChunkRendererContext<'a, 'b> {
|
||
fn deref_mut(&mut self) -> &mut Self::Target {
|
||
self.context
|
||
}
|
||
}
|
||
|
||
/// A set of edits to a given version of a buffer, computed asynchronously.
|
||
#[derive(Debug)]
|
||
pub struct Diff {
|
||
pub(crate) base_version: clock::Global,
|
||
line_ending: LineEnding,
|
||
edits: Vec<(Range<usize>, Arc<str>)>,
|
||
}
|
||
|
||
#[derive(Clone, Copy)]
|
||
pub(crate) struct DiagnosticEndpoint {
|
||
offset: usize,
|
||
is_start: bool,
|
||
severity: DiagnosticSeverity,
|
||
is_unnecessary: bool,
|
||
}
|
||
|
||
/// A class of characters, used for characterizing a run of text.
|
||
#[derive(Copy, Clone, Eq, PartialEq, PartialOrd, Ord, Debug)]
|
||
pub enum CharKind {
|
||
/// Whitespace.
|
||
Whitespace,
|
||
/// Punctuation.
|
||
Punctuation,
|
||
/// Word.
|
||
Word,
|
||
}
|
||
|
||
/// A runnable is a set of data about a region that could be resolved into a task
|
||
pub struct Runnable {
|
||
pub tags: SmallVec<[RunnableTag; 1]>,
|
||
pub language: Arc<Language>,
|
||
pub buffer: BufferId,
|
||
}
|
||
|
||
#[derive(Clone, Debug, PartialEq)]
|
||
pub struct IndentGuide {
|
||
pub buffer_id: BufferId,
|
||
pub start_row: BufferRow,
|
||
pub end_row: BufferRow,
|
||
pub depth: u32,
|
||
pub tab_size: u32,
|
||
pub settings: IndentGuideSettings,
|
||
}
|
||
|
||
impl IndentGuide {
|
||
pub fn indent_level(&self) -> u32 {
|
||
self.depth * self.tab_size
|
||
}
|
||
}
|
||
|
||
impl Buffer {
|
||
/// Create a new buffer with the given base text.
|
||
pub fn local<T: Into<String>>(base_text: T, cx: &ModelContext<Self>) -> Self {
|
||
Self::build(
|
||
TextBuffer::new(0, cx.entity_id().as_non_zero_u64().into(), base_text.into()),
|
||
None,
|
||
None,
|
||
Capability::ReadWrite,
|
||
)
|
||
}
|
||
|
||
/// Create a new buffer with the given base text that has proper line endings and other normalization applied.
|
||
pub fn local_normalized(
|
||
base_text_normalized: Rope,
|
||
line_ending: LineEnding,
|
||
cx: &ModelContext<Self>,
|
||
) -> Self {
|
||
Self::build(
|
||
TextBuffer::new_normalized(
|
||
0,
|
||
cx.entity_id().as_non_zero_u64().into(),
|
||
line_ending,
|
||
base_text_normalized,
|
||
),
|
||
None,
|
||
None,
|
||
Capability::ReadWrite,
|
||
)
|
||
}
|
||
|
||
/// Create a new buffer that is a replica of a remote buffer.
|
||
pub fn remote(
|
||
remote_id: BufferId,
|
||
replica_id: ReplicaId,
|
||
capability: Capability,
|
||
base_text: impl Into<String>,
|
||
) -> Self {
|
||
Self::build(
|
||
TextBuffer::new(replica_id, remote_id, base_text.into()),
|
||
None,
|
||
None,
|
||
capability,
|
||
)
|
||
}
|
||
|
||
/// Create a new buffer that is a replica of a remote buffer, populating its
|
||
/// state from the given protobuf message.
|
||
pub fn from_proto(
|
||
replica_id: ReplicaId,
|
||
capability: Capability,
|
||
message: proto::BufferState,
|
||
file: Option<Arc<dyn File>>,
|
||
) -> Result<Self> {
|
||
let buffer_id = BufferId::new(message.id)
|
||
.with_context(|| anyhow!("Could not deserialize buffer_id"))?;
|
||
let buffer = TextBuffer::new(replica_id, buffer_id, message.base_text);
|
||
let mut this = Self::build(buffer, message.diff_base, file, capability);
|
||
this.text.set_line_ending(proto::deserialize_line_ending(
|
||
rpc::proto::LineEnding::from_i32(message.line_ending)
|
||
.ok_or_else(|| anyhow!("missing line_ending"))?,
|
||
));
|
||
this.saved_version = proto::deserialize_version(&message.saved_version);
|
||
this.saved_mtime = message.saved_mtime.map(|time| time.into());
|
||
Ok(this)
|
||
}
|
||
|
||
/// Serialize the buffer's state to a protobuf message.
|
||
pub fn to_proto(&self, cx: &AppContext) -> proto::BufferState {
|
||
proto::BufferState {
|
||
id: self.remote_id().into(),
|
||
file: self.file.as_ref().map(|f| f.to_proto(cx)),
|
||
base_text: self.base_text().to_string(),
|
||
diff_base: self.diff_base().as_ref().map(|h| h.to_string()),
|
||
line_ending: proto::serialize_line_ending(self.line_ending()) as i32,
|
||
saved_version: proto::serialize_version(&self.saved_version),
|
||
saved_mtime: self.saved_mtime.map(|time| time.into()),
|
||
}
|
||
}
|
||
|
||
/// Serialize as protobufs all of the changes to the buffer since the given version.
|
||
pub fn serialize_ops(
|
||
&self,
|
||
since: Option<clock::Global>,
|
||
cx: &AppContext,
|
||
) -> Task<Vec<proto::Operation>> {
|
||
let mut operations = Vec::new();
|
||
operations.extend(self.deferred_ops.iter().map(proto::serialize_operation));
|
||
|
||
operations.extend(self.remote_selections.iter().map(|(_, set)| {
|
||
proto::serialize_operation(&Operation::UpdateSelections {
|
||
selections: set.selections.clone(),
|
||
lamport_timestamp: set.lamport_timestamp,
|
||
line_mode: set.line_mode,
|
||
cursor_shape: set.cursor_shape,
|
||
})
|
||
}));
|
||
|
||
for (server_id, diagnostics) in &self.diagnostics {
|
||
operations.push(proto::serialize_operation(&Operation::UpdateDiagnostics {
|
||
lamport_timestamp: self.diagnostics_timestamp,
|
||
server_id: *server_id,
|
||
diagnostics: diagnostics.iter().cloned().collect(),
|
||
}));
|
||
}
|
||
|
||
operations.push(proto::serialize_operation(
|
||
&Operation::UpdateCompletionTriggers {
|
||
triggers: self.completion_triggers.clone(),
|
||
lamport_timestamp: self.completion_triggers_timestamp,
|
||
},
|
||
));
|
||
|
||
let text_operations = self.text.operations().clone();
|
||
cx.background_executor().spawn(async move {
|
||
let since = since.unwrap_or_default();
|
||
operations.extend(
|
||
text_operations
|
||
.iter()
|
||
.filter(|(_, op)| !since.observed(op.timestamp()))
|
||
.map(|(_, op)| proto::serialize_operation(&Operation::Buffer(op.clone()))),
|
||
);
|
||
operations.sort_unstable_by_key(proto::lamport_timestamp_for_operation);
|
||
operations
|
||
})
|
||
}
|
||
|
||
/// Assign a language to the buffer, returning the buffer.
|
||
pub fn with_language(mut self, language: Arc<Language>, cx: &mut ModelContext<Self>) -> Self {
|
||
self.set_language(Some(language), cx);
|
||
self
|
||
}
|
||
|
||
/// Returns the [`Capability`] of this buffer.
|
||
pub fn capability(&self) -> Capability {
|
||
self.capability
|
||
}
|
||
|
||
/// Whether this buffer can only be read.
|
||
pub fn read_only(&self) -> bool {
|
||
self.capability == Capability::ReadOnly
|
||
}
|
||
|
||
/// Builds a [`Buffer`] with the given underlying [`TextBuffer`], diff base, [`File`] and [`Capability`].
|
||
pub fn build(
|
||
buffer: TextBuffer,
|
||
diff_base: Option<String>,
|
||
file: Option<Arc<dyn File>>,
|
||
capability: Capability,
|
||
) -> Self {
|
||
let saved_mtime = file.as_ref().and_then(|file| file.mtime());
|
||
let snapshot = buffer.snapshot();
|
||
let git_diff = git::diff::BufferDiff::new(&snapshot);
|
||
let syntax_map = Mutex::new(SyntaxMap::new(&snapshot));
|
||
Self {
|
||
saved_mtime,
|
||
saved_version: buffer.version(),
|
||
preview_version: buffer.version(),
|
||
reload_task: None,
|
||
transaction_depth: 0,
|
||
was_dirty_before_starting_transaction: None,
|
||
has_unsaved_edits: Cell::new((buffer.version(), false)),
|
||
text: buffer,
|
||
diff_base: diff_base.map(|mut raw_diff_base| {
|
||
LineEnding::normalize(&mut raw_diff_base);
|
||
BufferDiffBase::Git(Rope::from(raw_diff_base))
|
||
}),
|
||
diff_base_version: 0,
|
||
git_diff,
|
||
file,
|
||
capability,
|
||
syntax_map,
|
||
parsing_in_background: false,
|
||
non_text_state_update_count: 0,
|
||
sync_parse_timeout: Duration::from_millis(1),
|
||
parse_status: async_watch::channel(ParseStatus::Idle),
|
||
autoindent_requests: Default::default(),
|
||
pending_autoindent: Default::default(),
|
||
language: None,
|
||
remote_selections: Default::default(),
|
||
diagnostics: Default::default(),
|
||
diagnostics_timestamp: Default::default(),
|
||
completion_triggers: Default::default(),
|
||
completion_triggers_timestamp: Default::default(),
|
||
deferred_ops: OperationQueue::new(),
|
||
has_conflict: false,
|
||
_subscriptions: Vec::new(),
|
||
}
|
||
}
|
||
|
||
/// Retrieve a snapshot of the buffer's current state. This is computationally
|
||
/// cheap, and allows reading from the buffer on a background thread.
|
||
pub fn snapshot(&self) -> BufferSnapshot {
|
||
let text = self.text.snapshot();
|
||
let mut syntax_map = self.syntax_map.lock();
|
||
syntax_map.interpolate(&text);
|
||
let syntax = syntax_map.snapshot();
|
||
|
||
BufferSnapshot {
|
||
text,
|
||
syntax,
|
||
git_diff: self.git_diff.clone(),
|
||
file: self.file.clone(),
|
||
remote_selections: self.remote_selections.clone(),
|
||
diagnostics: self.diagnostics.clone(),
|
||
language: self.language.clone(),
|
||
non_text_state_update_count: self.non_text_state_update_count,
|
||
}
|
||
}
|
||
|
||
pub fn branch(&mut self, cx: &mut ModelContext<Self>) -> Model<Self> {
|
||
let this = cx.handle();
|
||
cx.new_model(|cx| {
|
||
let mut branch = Self {
|
||
diff_base: Some(BufferDiffBase::PastBufferVersion {
|
||
buffer: this.clone(),
|
||
rope: self.as_rope().clone(),
|
||
operations_to_ignore: Vec::new(),
|
||
}),
|
||
language: self.language.clone(),
|
||
has_conflict: self.has_conflict,
|
||
has_unsaved_edits: Cell::new(self.has_unsaved_edits.get_mut().clone()),
|
||
_subscriptions: vec![cx.subscribe(&this, Self::on_base_buffer_event)],
|
||
..Self::build(
|
||
self.text.branch(),
|
||
None,
|
||
self.file.clone(),
|
||
self.capability(),
|
||
)
|
||
};
|
||
if let Some(language_registry) = self.language_registry() {
|
||
branch.set_language_registry(language_registry);
|
||
}
|
||
|
||
// Reparse the branch buffer so that we get syntax highlighting immediately.
|
||
branch.reparse(cx);
|
||
|
||
branch
|
||
})
|
||
}
|
||
|
||
/// Applies all of the changes in this buffer that intersect the given `range`
|
||
/// to its base buffer. This buffer must be a branch buffer to call this method.
|
||
pub fn merge_into_base(&mut self, range: Option<Range<usize>>, cx: &mut ModelContext<Self>) {
|
||
let Some(base_buffer) = self.diff_base_buffer() else {
|
||
debug_panic!("not a branch buffer");
|
||
return;
|
||
};
|
||
|
||
base_buffer.update(cx, |base_buffer, cx| {
|
||
let edits = self
|
||
.edits_since::<usize>(&base_buffer.version)
|
||
.filter_map(|edit| {
|
||
if range
|
||
.as_ref()
|
||
.map_or(true, |range| range.overlaps(&edit.new))
|
||
{
|
||
Some((edit.old, self.text_for_range(edit.new).collect::<String>()))
|
||
} else {
|
||
None
|
||
}
|
||
})
|
||
.collect::<Vec<_>>();
|
||
|
||
let operation = base_buffer.edit(edits, None, cx);
|
||
|
||
// Prevent this operation from being reapplied to the branch.
|
||
if let Some(BufferDiffBase::PastBufferVersion {
|
||
operations_to_ignore,
|
||
..
|
||
}) = &mut self.diff_base
|
||
{
|
||
operations_to_ignore.extend(operation);
|
||
}
|
||
|
||
cx.emit(BufferEvent::DiffBaseChanged);
|
||
});
|
||
}
|
||
|
||
fn on_base_buffer_event(
|
||
&mut self,
|
||
_: Model<Buffer>,
|
||
event: &BufferEvent,
|
||
cx: &mut ModelContext<Self>,
|
||
) {
|
||
if let BufferEvent::Operation { operation, .. } = event {
|
||
if let Some(BufferDiffBase::PastBufferVersion {
|
||
operations_to_ignore,
|
||
..
|
||
}) = &mut self.diff_base
|
||
{
|
||
let mut is_ignored = false;
|
||
if let Operation::Buffer(text::Operation::Edit(buffer_operation)) = &operation {
|
||
operations_to_ignore.retain(|operation_to_ignore| {
|
||
match buffer_operation.timestamp.cmp(&operation_to_ignore) {
|
||
Ordering::Less => true,
|
||
Ordering::Equal => {
|
||
is_ignored = true;
|
||
false
|
||
}
|
||
Ordering::Greater => false,
|
||
}
|
||
});
|
||
}
|
||
if !is_ignored {
|
||
self.apply_ops([operation.clone()], cx);
|
||
self.diff_base_version += 1;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
#[cfg(test)]
|
||
pub(crate) fn as_text_snapshot(&self) -> &text::BufferSnapshot {
|
||
&self.text
|
||
}
|
||
|
||
/// Retrieve a snapshot of the buffer's raw text, without any
|
||
/// language-related state like the syntax tree or diagnostics.
|
||
pub fn text_snapshot(&self) -> text::BufferSnapshot {
|
||
self.text.snapshot()
|
||
}
|
||
|
||
/// The file associated with the buffer, if any.
|
||
pub fn file(&self) -> Option<&Arc<dyn File>> {
|
||
self.file.as_ref()
|
||
}
|
||
|
||
/// The version of the buffer that was last saved or reloaded from disk.
|
||
pub fn saved_version(&self) -> &clock::Global {
|
||
&self.saved_version
|
||
}
|
||
|
||
/// The mtime of the buffer's file when the buffer was last saved or reloaded from disk.
|
||
pub fn saved_mtime(&self) -> Option<SystemTime> {
|
||
self.saved_mtime
|
||
}
|
||
|
||
/// Assign a language to the buffer.
|
||
pub fn set_language(&mut self, language: Option<Arc<Language>>, cx: &mut ModelContext<Self>) {
|
||
self.non_text_state_update_count += 1;
|
||
self.syntax_map.lock().clear(&self.text);
|
||
self.language = language;
|
||
self.reparse(cx);
|
||
cx.emit(BufferEvent::LanguageChanged);
|
||
}
|
||
|
||
/// Assign a language registry to the buffer. This allows the buffer to retrieve
|
||
/// other languages if parts of the buffer are written in different languages.
|
||
pub fn set_language_registry(&self, language_registry: Arc<LanguageRegistry>) {
|
||
self.syntax_map
|
||
.lock()
|
||
.set_language_registry(language_registry);
|
||
}
|
||
|
||
pub fn language_registry(&self) -> Option<Arc<LanguageRegistry>> {
|
||
self.syntax_map.lock().language_registry()
|
||
}
|
||
|
||
/// Assign the buffer a new [`Capability`].
|
||
pub fn set_capability(&mut self, capability: Capability, cx: &mut ModelContext<Self>) {
|
||
self.capability = capability;
|
||
cx.emit(BufferEvent::CapabilityChanged)
|
||
}
|
||
|
||
/// This method is called to signal that the buffer has been saved.
|
||
pub fn did_save(
|
||
&mut self,
|
||
version: clock::Global,
|
||
mtime: Option<SystemTime>,
|
||
cx: &mut ModelContext<Self>,
|
||
) {
|
||
self.saved_version = version;
|
||
self.has_unsaved_edits
|
||
.set((self.saved_version().clone(), false));
|
||
self.has_conflict = false;
|
||
self.saved_mtime = mtime;
|
||
cx.emit(BufferEvent::Saved);
|
||
cx.notify();
|
||
}
|
||
|
||
/// This method is called to signal that the buffer has been discarded.
|
||
pub fn discarded(&self, cx: &mut ModelContext<Self>) {
|
||
cx.emit(BufferEvent::Discarded);
|
||
cx.notify();
|
||
}
|
||
|
||
/// Reloads the contents of the buffer from disk.
|
||
pub fn reload(&mut self, cx: &ModelContext<Self>) -> oneshot::Receiver<Option<Transaction>> {
|
||
let (tx, rx) = futures::channel::oneshot::channel();
|
||
let prev_version = self.text.version();
|
||
self.reload_task = Some(cx.spawn(|this, mut cx| async move {
|
||
let Some((new_mtime, new_text)) = this.update(&mut cx, |this, cx| {
|
||
let file = this.file.as_ref()?.as_local()?;
|
||
Some((file.mtime(), file.load(cx)))
|
||
})?
|
||
else {
|
||
return Ok(());
|
||
};
|
||
|
||
let new_text = new_text.await?;
|
||
let diff = this
|
||
.update(&mut cx, |this, cx| this.diff(new_text.clone(), cx))?
|
||
.await;
|
||
this.update(&mut cx, |this, cx| {
|
||
if this.version() == diff.base_version {
|
||
this.finalize_last_transaction();
|
||
this.apply_diff(diff, cx);
|
||
tx.send(this.finalize_last_transaction().cloned()).ok();
|
||
this.has_conflict = false;
|
||
this.did_reload(this.version(), this.line_ending(), new_mtime, cx);
|
||
} else {
|
||
if !diff.edits.is_empty()
|
||
|| this
|
||
.edits_since::<usize>(&diff.base_version)
|
||
.next()
|
||
.is_some()
|
||
{
|
||
this.has_conflict = true;
|
||
}
|
||
|
||
this.did_reload(prev_version, this.line_ending(), this.saved_mtime, cx);
|
||
}
|
||
|
||
this.reload_task.take();
|
||
})
|
||
}));
|
||
rx
|
||
}
|
||
|
||
/// This method is called to signal that the buffer has been reloaded.
|
||
pub fn did_reload(
|
||
&mut self,
|
||
version: clock::Global,
|
||
line_ending: LineEnding,
|
||
mtime: Option<SystemTime>,
|
||
cx: &mut ModelContext<Self>,
|
||
) {
|
||
self.saved_version = version;
|
||
self.has_unsaved_edits
|
||
.set((self.saved_version.clone(), false));
|
||
self.text.set_line_ending(line_ending);
|
||
self.saved_mtime = mtime;
|
||
cx.emit(BufferEvent::Reloaded);
|
||
cx.notify();
|
||
}
|
||
|
||
/// Updates the [`File`] backing this buffer. This should be called when
|
||
/// the file has changed or has been deleted.
|
||
pub fn file_updated(&mut self, new_file: Arc<dyn File>, cx: &mut ModelContext<Self>) {
|
||
let mut file_changed = false;
|
||
|
||
if let Some(old_file) = self.file.as_ref() {
|
||
if new_file.path() != old_file.path() {
|
||
file_changed = true;
|
||
}
|
||
|
||
if new_file.is_deleted() {
|
||
if !old_file.is_deleted() {
|
||
file_changed = true;
|
||
if !self.is_dirty() {
|
||
cx.emit(BufferEvent::DirtyChanged);
|
||
}
|
||
}
|
||
} else {
|
||
let new_mtime = new_file.mtime();
|
||
if new_mtime != old_file.mtime() {
|
||
file_changed = true;
|
||
|
||
if !self.is_dirty() {
|
||
self.reload(cx).close();
|
||
}
|
||
}
|
||
}
|
||
} else {
|
||
file_changed = true;
|
||
};
|
||
|
||
self.file = Some(new_file);
|
||
if file_changed {
|
||
self.non_text_state_update_count += 1;
|
||
cx.emit(BufferEvent::FileHandleChanged);
|
||
cx.notify();
|
||
}
|
||
}
|
||
|
||
/// Returns the current diff base, see [`Buffer::set_diff_base`].
|
||
pub fn diff_base(&self) -> Option<&Rope> {
|
||
match self.diff_base.as_ref()? {
|
||
BufferDiffBase::Git(rope) | BufferDiffBase::PastBufferVersion { rope, .. } => {
|
||
Some(rope)
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Sets the text that will be used to compute a Git diff
|
||
/// against the buffer text.
|
||
pub fn set_diff_base(&mut self, diff_base: Option<String>, cx: &ModelContext<Self>) {
|
||
self.diff_base = diff_base.map(|mut raw_diff_base| {
|
||
LineEnding::normalize(&mut raw_diff_base);
|
||
BufferDiffBase::Git(Rope::from(raw_diff_base))
|
||
});
|
||
self.diff_base_version += 1;
|
||
if let Some(recalc_task) = self.recalculate_diff(cx) {
|
||
cx.spawn(|buffer, mut cx| async move {
|
||
recalc_task.await;
|
||
buffer
|
||
.update(&mut cx, |_, cx| {
|
||
cx.emit(BufferEvent::DiffBaseChanged);
|
||
})
|
||
.ok();
|
||
})
|
||
.detach();
|
||
}
|
||
}
|
||
|
||
/// Returns a number, unique per diff base set to the buffer.
|
||
pub fn diff_base_version(&self) -> usize {
|
||
self.diff_base_version
|
||
}
|
||
|
||
pub fn diff_base_buffer(&self) -> Option<Model<Self>> {
|
||
match self.diff_base.as_ref()? {
|
||
BufferDiffBase::Git(_) => None,
|
||
BufferDiffBase::PastBufferVersion { buffer, .. } => Some(buffer.clone()),
|
||
}
|
||
}
|
||
|
||
/// Recomputes the diff.
|
||
pub fn recalculate_diff(&self, cx: &ModelContext<Self>) -> Option<Task<()>> {
|
||
let diff_base_rope = match self.diff_base.as_ref()? {
|
||
BufferDiffBase::Git(rope) => rope.clone(),
|
||
BufferDiffBase::PastBufferVersion { buffer, .. } => buffer.read(cx).as_rope().clone(),
|
||
};
|
||
|
||
let snapshot = self.snapshot();
|
||
let mut diff = self.git_diff.clone();
|
||
let diff = cx.background_executor().spawn(async move {
|
||
diff.update(&diff_base_rope, &snapshot).await;
|
||
(diff, diff_base_rope)
|
||
});
|
||
|
||
Some(cx.spawn(|this, mut cx| async move {
|
||
let (buffer_diff, diff_base_rope) = diff.await;
|
||
this.update(&mut cx, |this, cx| {
|
||
this.git_diff = buffer_diff;
|
||
this.non_text_state_update_count += 1;
|
||
if let Some(BufferDiffBase::PastBufferVersion { rope, .. }) = &mut this.diff_base {
|
||
*rope = diff_base_rope;
|
||
cx.emit(BufferEvent::DiffBaseChanged);
|
||
}
|
||
cx.emit(BufferEvent::DiffUpdated);
|
||
})
|
||
.ok();
|
||
}))
|
||
}
|
||
|
||
/// Returns the primary [`Language`] assigned to this [`Buffer`].
|
||
pub fn language(&self) -> Option<&Arc<Language>> {
|
||
self.language.as_ref()
|
||
}
|
||
|
||
/// Returns the [`Language`] at the given location.
|
||
pub fn language_at<D: ToOffset>(&self, position: D) -> Option<Arc<Language>> {
|
||
let offset = position.to_offset(self);
|
||
self.syntax_map
|
||
.lock()
|
||
.layers_for_range(offset..offset, &self.text, false)
|
||
.last()
|
||
.map(|info| info.language.clone())
|
||
.or_else(|| self.language.clone())
|
||
}
|
||
|
||
/// An integer version number that accounts for all updates besides
|
||
/// the buffer's text itself (which is versioned via a version vector).
|
||
pub fn non_text_state_update_count(&self) -> usize {
|
||
self.non_text_state_update_count
|
||
}
|
||
|
||
/// Whether the buffer is being parsed in the background.
|
||
#[cfg(any(test, feature = "test-support"))]
|
||
pub fn is_parsing(&self) -> bool {
|
||
self.parsing_in_background
|
||
}
|
||
|
||
/// Indicates whether the buffer contains any regions that may be
|
||
/// written in a language that hasn't been loaded yet.
|
||
pub fn contains_unknown_injections(&self) -> bool {
|
||
self.syntax_map.lock().contains_unknown_injections()
|
||
}
|
||
|
||
#[cfg(test)]
|
||
pub fn set_sync_parse_timeout(&mut self, timeout: Duration) {
|
||
self.sync_parse_timeout = timeout;
|
||
}
|
||
|
||
/// Called after an edit to synchronize the buffer's main parse tree with
|
||
/// the buffer's new underlying state.
|
||
///
|
||
/// Locks the syntax map and interpolates the edits since the last reparse
|
||
/// into the foreground syntax tree.
|
||
///
|
||
/// Then takes a stable snapshot of the syntax map before unlocking it.
|
||
/// The snapshot with the interpolated edits is sent to a background thread,
|
||
/// where we ask Tree-sitter to perform an incremental parse.
|
||
///
|
||
/// Meanwhile, in the foreground, we block the main thread for up to 1ms
|
||
/// waiting on the parse to complete. As soon as it completes, we proceed
|
||
/// synchronously, unless a 1ms timeout elapses.
|
||
///
|
||
/// If we time out waiting on the parse, we spawn a second task waiting
|
||
/// until the parse does complete and return with the interpolated tree still
|
||
/// in the foreground. When the background parse completes, call back into
|
||
/// the main thread and assign the foreground parse state.
|
||
///
|
||
/// If the buffer or grammar changed since the start of the background parse,
|
||
/// initiate an additional reparse recursively. To avoid concurrent parses
|
||
/// for the same buffer, we only initiate a new parse if we are not already
|
||
/// parsing in the background.
|
||
pub fn reparse(&mut self, cx: &mut ModelContext<Self>) {
|
||
if self.parsing_in_background {
|
||
return;
|
||
}
|
||
let language = if let Some(language) = self.language.clone() {
|
||
language
|
||
} else {
|
||
return;
|
||
};
|
||
|
||
let text = self.text_snapshot();
|
||
let parsed_version = self.version();
|
||
|
||
let mut syntax_map = self.syntax_map.lock();
|
||
syntax_map.interpolate(&text);
|
||
let language_registry = syntax_map.language_registry();
|
||
let mut syntax_snapshot = syntax_map.snapshot();
|
||
drop(syntax_map);
|
||
|
||
let parse_task = cx.background_executor().spawn({
|
||
let language = language.clone();
|
||
let language_registry = language_registry.clone();
|
||
async move {
|
||
syntax_snapshot.reparse(&text, language_registry, language);
|
||
syntax_snapshot
|
||
}
|
||
});
|
||
|
||
self.parse_status.0.send(ParseStatus::Parsing).unwrap();
|
||
match cx
|
||
.background_executor()
|
||
.block_with_timeout(self.sync_parse_timeout, parse_task)
|
||
{
|
||
Ok(new_syntax_snapshot) => {
|
||
self.did_finish_parsing(new_syntax_snapshot, cx);
|
||
}
|
||
Err(parse_task) => {
|
||
self.parsing_in_background = true;
|
||
cx.spawn(move |this, mut cx| async move {
|
||
let new_syntax_map = parse_task.await;
|
||
this.update(&mut cx, move |this, cx| {
|
||
let grammar_changed =
|
||
this.language.as_ref().map_or(true, |current_language| {
|
||
!Arc::ptr_eq(&language, current_language)
|
||
});
|
||
let language_registry_changed = new_syntax_map
|
||
.contains_unknown_injections()
|
||
&& language_registry.map_or(false, |registry| {
|
||
registry.version() != new_syntax_map.language_registry_version()
|
||
});
|
||
let parse_again = language_registry_changed
|
||
|| grammar_changed
|
||
|| this.version.changed_since(&parsed_version);
|
||
this.did_finish_parsing(new_syntax_map, cx);
|
||
this.parsing_in_background = false;
|
||
if parse_again {
|
||
this.reparse(cx);
|
||
}
|
||
})
|
||
.ok();
|
||
})
|
||
.detach();
|
||
}
|
||
}
|
||
}
|
||
|
||
fn did_finish_parsing(&mut self, syntax_snapshot: SyntaxSnapshot, cx: &mut ModelContext<Self>) {
|
||
self.non_text_state_update_count += 1;
|
||
self.syntax_map.lock().did_parse(syntax_snapshot);
|
||
self.request_autoindent(cx);
|
||
self.parse_status.0.send(ParseStatus::Idle).unwrap();
|
||
cx.emit(BufferEvent::Reparsed);
|
||
cx.notify();
|
||
}
|
||
|
||
pub fn parse_status(&self) -> watch::Receiver<ParseStatus> {
|
||
self.parse_status.1.clone()
|
||
}
|
||
|
||
/// Assign to the buffer a set of diagnostics created by a given language server.
|
||
pub fn update_diagnostics(
|
||
&mut self,
|
||
server_id: LanguageServerId,
|
||
diagnostics: DiagnosticSet,
|
||
cx: &mut ModelContext<Self>,
|
||
) {
|
||
let lamport_timestamp = self.text.lamport_clock.tick();
|
||
let op = Operation::UpdateDiagnostics {
|
||
server_id,
|
||
diagnostics: diagnostics.iter().cloned().collect(),
|
||
lamport_timestamp,
|
||
};
|
||
self.apply_diagnostic_update(server_id, diagnostics, lamport_timestamp, cx);
|
||
self.send_operation(op, true, cx);
|
||
}
|
||
|
||
fn request_autoindent(&mut self, cx: &mut ModelContext<Self>) {
|
||
if let Some(indent_sizes) = self.compute_autoindents() {
|
||
let indent_sizes = cx.background_executor().spawn(indent_sizes);
|
||
match cx
|
||
.background_executor()
|
||
.block_with_timeout(Duration::from_micros(500), indent_sizes)
|
||
{
|
||
Ok(indent_sizes) => self.apply_autoindents(indent_sizes, cx),
|
||
Err(indent_sizes) => {
|
||
self.pending_autoindent = Some(cx.spawn(|this, mut cx| async move {
|
||
let indent_sizes = indent_sizes.await;
|
||
this.update(&mut cx, |this, cx| {
|
||
this.apply_autoindents(indent_sizes, cx);
|
||
})
|
||
.ok();
|
||
}));
|
||
}
|
||
}
|
||
} else {
|
||
self.autoindent_requests.clear();
|
||
}
|
||
}
|
||
|
||
fn compute_autoindents(&self) -> Option<impl Future<Output = BTreeMap<u32, IndentSize>>> {
|
||
let max_rows_between_yields = 100;
|
||
let snapshot = self.snapshot();
|
||
if snapshot.syntax.is_empty() || self.autoindent_requests.is_empty() {
|
||
return None;
|
||
}
|
||
|
||
let autoindent_requests = self.autoindent_requests.clone();
|
||
Some(async move {
|
||
let mut indent_sizes = BTreeMap::new();
|
||
for request in autoindent_requests {
|
||
// Resolve each edited range to its row in the current buffer and in the
|
||
// buffer before this batch of edits.
|
||
let mut row_ranges = Vec::new();
|
||
let mut old_to_new_rows = BTreeMap::new();
|
||
let mut language_indent_sizes_by_new_row = Vec::new();
|
||
for entry in &request.entries {
|
||
let position = entry.range.start;
|
||
let new_row = position.to_point(&snapshot).row;
|
||
let new_end_row = entry.range.end.to_point(&snapshot).row + 1;
|
||
language_indent_sizes_by_new_row.push((new_row, entry.indent_size));
|
||
|
||
if !entry.first_line_is_new {
|
||
let old_row = position.to_point(&request.before_edit).row;
|
||
old_to_new_rows.insert(old_row, new_row);
|
||
}
|
||
row_ranges.push((new_row..new_end_row, entry.original_indent_column));
|
||
}
|
||
|
||
// Build a map containing the suggested indentation for each of the edited lines
|
||
// with respect to the state of the buffer before these edits. This map is keyed
|
||
// by the rows for these lines in the current state of the buffer.
|
||
let mut old_suggestions = BTreeMap::<u32, (IndentSize, bool)>::default();
|
||
let old_edited_ranges =
|
||
contiguous_ranges(old_to_new_rows.keys().copied(), max_rows_between_yields);
|
||
let mut language_indent_sizes = language_indent_sizes_by_new_row.iter().peekable();
|
||
let mut language_indent_size = IndentSize::default();
|
||
for old_edited_range in old_edited_ranges {
|
||
let suggestions = request
|
||
.before_edit
|
||
.suggest_autoindents(old_edited_range.clone())
|
||
.into_iter()
|
||
.flatten();
|
||
for (old_row, suggestion) in old_edited_range.zip(suggestions) {
|
||
if let Some(suggestion) = suggestion {
|
||
let new_row = *old_to_new_rows.get(&old_row).unwrap();
|
||
|
||
// Find the indent size based on the language for this row.
|
||
while let Some((row, size)) = language_indent_sizes.peek() {
|
||
if *row > new_row {
|
||
break;
|
||
}
|
||
language_indent_size = *size;
|
||
language_indent_sizes.next();
|
||
}
|
||
|
||
let suggested_indent = old_to_new_rows
|
||
.get(&suggestion.basis_row)
|
||
.and_then(|from_row| {
|
||
Some(old_suggestions.get(from_row).copied()?.0)
|
||
})
|
||
.unwrap_or_else(|| {
|
||
request
|
||
.before_edit
|
||
.indent_size_for_line(suggestion.basis_row)
|
||
})
|
||
.with_delta(suggestion.delta, language_indent_size);
|
||
old_suggestions
|
||
.insert(new_row, (suggested_indent, suggestion.within_error));
|
||
}
|
||
}
|
||
yield_now().await;
|
||
}
|
||
|
||
// In block mode, only compute indentation suggestions for the first line
|
||
// of each insertion. Otherwise, compute suggestions for every inserted line.
|
||
let new_edited_row_ranges = contiguous_ranges(
|
||
row_ranges.iter().flat_map(|(range, _)| {
|
||
if request.is_block_mode {
|
||
range.start..range.start + 1
|
||
} else {
|
||
range.clone()
|
||
}
|
||
}),
|
||
max_rows_between_yields,
|
||
);
|
||
|
||
// Compute new suggestions for each line, but only include them in the result
|
||
// if they differ from the old suggestion for that line.
|
||
let mut language_indent_sizes = language_indent_sizes_by_new_row.iter().peekable();
|
||
let mut language_indent_size = IndentSize::default();
|
||
for new_edited_row_range in new_edited_row_ranges {
|
||
let suggestions = snapshot
|
||
.suggest_autoindents(new_edited_row_range.clone())
|
||
.into_iter()
|
||
.flatten();
|
||
for (new_row, suggestion) in new_edited_row_range.zip(suggestions) {
|
||
if let Some(suggestion) = suggestion {
|
||
// Find the indent size based on the language for this row.
|
||
while let Some((row, size)) = language_indent_sizes.peek() {
|
||
if *row > new_row {
|
||
break;
|
||
}
|
||
language_indent_size = *size;
|
||
language_indent_sizes.next();
|
||
}
|
||
|
||
let suggested_indent = indent_sizes
|
||
.get(&suggestion.basis_row)
|
||
.copied()
|
||
.unwrap_or_else(|| {
|
||
snapshot.indent_size_for_line(suggestion.basis_row)
|
||
})
|
||
.with_delta(suggestion.delta, language_indent_size);
|
||
if old_suggestions.get(&new_row).map_or(
|
||
true,
|
||
|(old_indentation, was_within_error)| {
|
||
suggested_indent != *old_indentation
|
||
&& (!suggestion.within_error || *was_within_error)
|
||
},
|
||
) {
|
||
indent_sizes.insert(new_row, suggested_indent);
|
||
}
|
||
}
|
||
}
|
||
yield_now().await;
|
||
}
|
||
|
||
// For each block of inserted text, adjust the indentation of the remaining
|
||
// lines of the block by the same amount as the first line was adjusted.
|
||
if request.is_block_mode {
|
||
for (row_range, original_indent_column) in
|
||
row_ranges
|
||
.into_iter()
|
||
.filter_map(|(range, original_indent_column)| {
|
||
if range.len() > 1 {
|
||
Some((range, original_indent_column?))
|
||
} else {
|
||
None
|
||
}
|
||
})
|
||
{
|
||
let new_indent = indent_sizes
|
||
.get(&row_range.start)
|
||
.copied()
|
||
.unwrap_or_else(|| snapshot.indent_size_for_line(row_range.start));
|
||
let delta = new_indent.len as i64 - original_indent_column as i64;
|
||
if delta != 0 {
|
||
for row in row_range.skip(1) {
|
||
indent_sizes.entry(row).or_insert_with(|| {
|
||
let mut size = snapshot.indent_size_for_line(row);
|
||
if size.kind == new_indent.kind {
|
||
match delta.cmp(&0) {
|
||
Ordering::Greater => size.len += delta as u32,
|
||
Ordering::Less => {
|
||
size.len = size.len.saturating_sub(-delta as u32)
|
||
}
|
||
Ordering::Equal => {}
|
||
}
|
||
}
|
||
size
|
||
});
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
indent_sizes
|
||
})
|
||
}
|
||
|
||
fn apply_autoindents(
|
||
&mut self,
|
||
indent_sizes: BTreeMap<u32, IndentSize>,
|
||
cx: &mut ModelContext<Self>,
|
||
) {
|
||
self.autoindent_requests.clear();
|
||
|
||
let edits: Vec<_> = indent_sizes
|
||
.into_iter()
|
||
.filter_map(|(row, indent_size)| {
|
||
let current_size = indent_size_for_line(self, row);
|
||
Self::edit_for_indent_size_adjustment(row, current_size, indent_size)
|
||
})
|
||
.collect();
|
||
|
||
let preserve_preview = self.preserve_preview();
|
||
self.edit(edits, None, cx);
|
||
if preserve_preview {
|
||
self.refresh_preview();
|
||
}
|
||
}
|
||
|
||
/// Create a minimal edit that will cause the given row to be indented
|
||
/// with the given size. After applying this edit, the length of the line
|
||
/// will always be at least `new_size.len`.
|
||
pub fn edit_for_indent_size_adjustment(
|
||
row: u32,
|
||
current_size: IndentSize,
|
||
new_size: IndentSize,
|
||
) -> Option<(Range<Point>, String)> {
|
||
if new_size.kind == current_size.kind {
|
||
match new_size.len.cmp(¤t_size.len) {
|
||
Ordering::Greater => {
|
||
let point = Point::new(row, 0);
|
||
Some((
|
||
point..point,
|
||
iter::repeat(new_size.char())
|
||
.take((new_size.len - current_size.len) as usize)
|
||
.collect::<String>(),
|
||
))
|
||
}
|
||
|
||
Ordering::Less => Some((
|
||
Point::new(row, 0)..Point::new(row, current_size.len - new_size.len),
|
||
String::new(),
|
||
)),
|
||
|
||
Ordering::Equal => None,
|
||
}
|
||
} else {
|
||
Some((
|
||
Point::new(row, 0)..Point::new(row, current_size.len),
|
||
iter::repeat(new_size.char())
|
||
.take(new_size.len as usize)
|
||
.collect::<String>(),
|
||
))
|
||
}
|
||
}
|
||
|
||
/// Spawns a background task that asynchronously computes a `Diff` between the buffer's text
|
||
/// and the given new text.
|
||
pub fn diff(&self, mut new_text: String, cx: &AppContext) -> Task<Diff> {
|
||
let old_text = self.as_rope().clone();
|
||
let base_version = self.version();
|
||
cx.background_executor()
|
||
.spawn_labeled(*BUFFER_DIFF_TASK, async move {
|
||
let old_text = old_text.to_string();
|
||
let line_ending = LineEnding::detect(&new_text);
|
||
LineEnding::normalize(&mut new_text);
|
||
|
||
let diff = TextDiff::from_chars(old_text.as_str(), new_text.as_str());
|
||
let empty: Arc<str> = Arc::default();
|
||
|
||
let mut edits = Vec::new();
|
||
let mut old_offset = 0;
|
||
let mut new_offset = 0;
|
||
let mut last_edit: Option<(Range<usize>, Range<usize>)> = None;
|
||
for change in diff.iter_all_changes().map(Some).chain([None]) {
|
||
if let Some(change) = &change {
|
||
let len = change.value().len();
|
||
match change.tag() {
|
||
ChangeTag::Equal => {
|
||
old_offset += len;
|
||
new_offset += len;
|
||
}
|
||
ChangeTag::Delete => {
|
||
let old_end_offset = old_offset + len;
|
||
if let Some((last_old_range, _)) = &mut last_edit {
|
||
last_old_range.end = old_end_offset;
|
||
} else {
|
||
last_edit =
|
||
Some((old_offset..old_end_offset, new_offset..new_offset));
|
||
}
|
||
old_offset = old_end_offset;
|
||
}
|
||
ChangeTag::Insert => {
|
||
let new_end_offset = new_offset + len;
|
||
if let Some((_, last_new_range)) = &mut last_edit {
|
||
last_new_range.end = new_end_offset;
|
||
} else {
|
||
last_edit =
|
||
Some((old_offset..old_offset, new_offset..new_end_offset));
|
||
}
|
||
new_offset = new_end_offset;
|
||
}
|
||
}
|
||
}
|
||
|
||
if let Some((old_range, new_range)) = &last_edit {
|
||
if old_offset > old_range.end
|
||
|| new_offset > new_range.end
|
||
|| change.is_none()
|
||
{
|
||
let text = if new_range.is_empty() {
|
||
empty.clone()
|
||
} else {
|
||
new_text[new_range.clone()].into()
|
||
};
|
||
edits.push((old_range.clone(), text));
|
||
last_edit.take();
|
||
}
|
||
}
|
||
}
|
||
|
||
Diff {
|
||
base_version,
|
||
line_ending,
|
||
edits,
|
||
}
|
||
})
|
||
}
|
||
|
||
/// Spawns a background task that searches the buffer for any whitespace
|
||
/// at the ends of a lines, and returns a `Diff` that removes that whitespace.
|
||
pub fn remove_trailing_whitespace(&self, cx: &AppContext) -> Task<Diff> {
|
||
let old_text = self.as_rope().clone();
|
||
let line_ending = self.line_ending();
|
||
let base_version = self.version();
|
||
cx.background_executor().spawn(async move {
|
||
let ranges = trailing_whitespace_ranges(&old_text);
|
||
let empty = Arc::<str>::from("");
|
||
Diff {
|
||
base_version,
|
||
line_ending,
|
||
edits: ranges
|
||
.into_iter()
|
||
.map(|range| (range, empty.clone()))
|
||
.collect(),
|
||
}
|
||
})
|
||
}
|
||
|
||
/// Ensures that the buffer ends with a single newline character, and
|
||
/// no other whitespace.
|
||
pub fn ensure_final_newline(&mut self, cx: &mut ModelContext<Self>) {
|
||
let len = self.len();
|
||
let mut offset = len;
|
||
for chunk in self.as_rope().reversed_chunks_in_range(0..len) {
|
||
let non_whitespace_len = chunk
|
||
.trim_end_matches(|c: char| c.is_ascii_whitespace())
|
||
.len();
|
||
offset -= chunk.len();
|
||
offset += non_whitespace_len;
|
||
if non_whitespace_len != 0 {
|
||
if offset == len - 1 && chunk.get(non_whitespace_len..) == Some("\n") {
|
||
return;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
self.edit([(offset..len, "\n")], None, cx);
|
||
}
|
||
|
||
/// Applies a diff to the buffer. If the buffer has changed since the given diff was
|
||
/// calculated, then adjust the diff to account for those changes, and discard any
|
||
/// parts of the diff that conflict with those changes.
|
||
pub fn apply_diff(&mut self, diff: Diff, cx: &mut ModelContext<Self>) -> Option<TransactionId> {
|
||
// Check for any edits to the buffer that have occurred since this diff
|
||
// was computed.
|
||
let snapshot = self.snapshot();
|
||
let mut edits_since = snapshot.edits_since::<usize>(&diff.base_version).peekable();
|
||
let mut delta = 0;
|
||
let adjusted_edits = diff.edits.into_iter().filter_map(|(range, new_text)| {
|
||
while let Some(edit_since) = edits_since.peek() {
|
||
// If the edit occurs after a diff hunk, then it does not
|
||
// affect that hunk.
|
||
if edit_since.old.start > range.end {
|
||
break;
|
||
}
|
||
// If the edit precedes the diff hunk, then adjust the hunk
|
||
// to reflect the edit.
|
||
else if edit_since.old.end < range.start {
|
||
delta += edit_since.new_len() as i64 - edit_since.old_len() as i64;
|
||
edits_since.next();
|
||
}
|
||
// If the edit intersects a diff hunk, then discard that hunk.
|
||
else {
|
||
return None;
|
||
}
|
||
}
|
||
|
||
let start = (range.start as i64 + delta) as usize;
|
||
let end = (range.end as i64 + delta) as usize;
|
||
Some((start..end, new_text))
|
||
});
|
||
|
||
self.start_transaction();
|
||
self.text.set_line_ending(diff.line_ending);
|
||
self.edit(adjusted_edits, None, cx);
|
||
self.end_transaction(cx)
|
||
}
|
||
|
||
fn has_unsaved_edits(&self) -> bool {
|
||
let (last_version, has_unsaved_edits) = self.has_unsaved_edits.take();
|
||
|
||
if last_version == self.version {
|
||
self.has_unsaved_edits
|
||
.set((last_version, has_unsaved_edits));
|
||
return has_unsaved_edits;
|
||
}
|
||
|
||
let has_edits = self.has_edits_since(&self.saved_version);
|
||
self.has_unsaved_edits
|
||
.set((self.version.clone(), has_edits));
|
||
has_edits
|
||
}
|
||
|
||
/// Checks if the buffer has unsaved changes.
|
||
pub fn is_dirty(&self) -> bool {
|
||
self.capability != Capability::ReadOnly
|
||
&& (self.has_conflict
|
||
|| self.has_unsaved_edits()
|
||
|| self
|
||
.file
|
||
.as_ref()
|
||
.map_or(false, |file| file.is_deleted() || !file.is_created()))
|
||
}
|
||
|
||
/// Checks if the buffer and its file have both changed since the buffer
|
||
/// was last saved or reloaded.
|
||
pub fn has_conflict(&self) -> bool {
|
||
self.has_conflict
|
||
|| self.file.as_ref().map_or(false, |file| {
|
||
file.mtime() > self.saved_mtime && self.has_unsaved_edits()
|
||
})
|
||
}
|
||
|
||
/// Gets a [`Subscription`] that tracks all of the changes to the buffer's text.
|
||
pub fn subscribe(&mut self) -> Subscription {
|
||
self.text.subscribe()
|
||
}
|
||
|
||
/// Starts a transaction, if one is not already in-progress. When undoing or
|
||
/// redoing edits, all of the edits performed within a transaction are undone
|
||
/// or redone together.
|
||
pub fn start_transaction(&mut self) -> Option<TransactionId> {
|
||
self.start_transaction_at(Instant::now())
|
||
}
|
||
|
||
/// Starts a transaction, providing the current time. Subsequent transactions
|
||
/// that occur within a short period of time will be grouped together. This
|
||
/// is controlled by the buffer's undo grouping duration.
|
||
pub fn start_transaction_at(&mut self, now: Instant) -> Option<TransactionId> {
|
||
self.transaction_depth += 1;
|
||
if self.was_dirty_before_starting_transaction.is_none() {
|
||
self.was_dirty_before_starting_transaction = Some(self.is_dirty());
|
||
}
|
||
self.text.start_transaction_at(now)
|
||
}
|
||
|
||
/// Terminates the current transaction, if this is the outermost transaction.
|
||
pub fn end_transaction(&mut self, cx: &mut ModelContext<Self>) -> Option<TransactionId> {
|
||
self.end_transaction_at(Instant::now(), cx)
|
||
}
|
||
|
||
/// Terminates the current transaction, providing the current time. Subsequent transactions
|
||
/// that occur within a short period of time will be grouped together. This
|
||
/// is controlled by the buffer's undo grouping duration.
|
||
pub fn end_transaction_at(
|
||
&mut self,
|
||
now: Instant,
|
||
cx: &mut ModelContext<Self>,
|
||
) -> Option<TransactionId> {
|
||
assert!(self.transaction_depth > 0);
|
||
self.transaction_depth -= 1;
|
||
let was_dirty = if self.transaction_depth == 0 {
|
||
self.was_dirty_before_starting_transaction.take().unwrap()
|
||
} else {
|
||
false
|
||
};
|
||
if let Some((transaction_id, start_version)) = self.text.end_transaction_at(now) {
|
||
self.did_edit(&start_version, was_dirty, cx);
|
||
Some(transaction_id)
|
||
} else {
|
||
None
|
||
}
|
||
}
|
||
|
||
/// Manually add a transaction to the buffer's undo history.
|
||
pub fn push_transaction(&mut self, transaction: Transaction, now: Instant) {
|
||
self.text.push_transaction(transaction, now);
|
||
}
|
||
|
||
/// Prevent the last transaction from being grouped with any subsequent transactions,
|
||
/// even if they occur with the buffer's undo grouping duration.
|
||
pub fn finalize_last_transaction(&mut self) -> Option<&Transaction> {
|
||
self.text.finalize_last_transaction()
|
||
}
|
||
|
||
/// Manually group all changes since a given transaction.
|
||
pub fn group_until_transaction(&mut self, transaction_id: TransactionId) {
|
||
self.text.group_until_transaction(transaction_id);
|
||
}
|
||
|
||
/// Manually remove a transaction from the buffer's undo history
|
||
pub fn forget_transaction(&mut self, transaction_id: TransactionId) {
|
||
self.text.forget_transaction(transaction_id);
|
||
}
|
||
|
||
/// Manually merge two adjacent transactions in the buffer's undo history.
|
||
pub fn merge_transactions(&mut self, transaction: TransactionId, destination: TransactionId) {
|
||
self.text.merge_transactions(transaction, destination);
|
||
}
|
||
|
||
/// Waits for the buffer to receive operations with the given timestamps.
|
||
pub fn wait_for_edits(
|
||
&mut self,
|
||
edit_ids: impl IntoIterator<Item = clock::Lamport>,
|
||
) -> impl Future<Output = Result<()>> {
|
||
self.text.wait_for_edits(edit_ids)
|
||
}
|
||
|
||
/// Waits for the buffer to receive the operations necessary for resolving the given anchors.
|
||
pub fn wait_for_anchors(
|
||
&mut self,
|
||
anchors: impl IntoIterator<Item = Anchor>,
|
||
) -> impl 'static + Future<Output = Result<()>> {
|
||
self.text.wait_for_anchors(anchors)
|
||
}
|
||
|
||
/// Waits for the buffer to receive operations up to the given version.
|
||
pub fn wait_for_version(&mut self, version: clock::Global) -> impl Future<Output = Result<()>> {
|
||
self.text.wait_for_version(version)
|
||
}
|
||
|
||
/// Forces all futures returned by [`Buffer::wait_for_version`], [`Buffer::wait_for_edits`], or
|
||
/// [`Buffer::wait_for_version`] to resolve with an error.
|
||
pub fn give_up_waiting(&mut self) {
|
||
self.text.give_up_waiting();
|
||
}
|
||
|
||
/// Stores a set of selections that should be broadcasted to all of the buffer's replicas.
|
||
pub fn set_active_selections(
|
||
&mut self,
|
||
selections: Arc<[Selection<Anchor>]>,
|
||
line_mode: bool,
|
||
cursor_shape: CursorShape,
|
||
cx: &mut ModelContext<Self>,
|
||
) {
|
||
let lamport_timestamp = self.text.lamport_clock.tick();
|
||
self.remote_selections.insert(
|
||
self.text.replica_id(),
|
||
SelectionSet {
|
||
selections: selections.clone(),
|
||
lamport_timestamp,
|
||
line_mode,
|
||
cursor_shape,
|
||
},
|
||
);
|
||
self.send_operation(
|
||
Operation::UpdateSelections {
|
||
selections,
|
||
line_mode,
|
||
lamport_timestamp,
|
||
cursor_shape,
|
||
},
|
||
true,
|
||
cx,
|
||
);
|
||
self.non_text_state_update_count += 1;
|
||
cx.notify();
|
||
}
|
||
|
||
/// Clears the selections, so that other replicas of the buffer do not see any selections for
|
||
/// this replica.
|
||
pub fn remove_active_selections(&mut self, cx: &mut ModelContext<Self>) {
|
||
if self
|
||
.remote_selections
|
||
.get(&self.text.replica_id())
|
||
.map_or(true, |set| !set.selections.is_empty())
|
||
{
|
||
self.set_active_selections(Arc::default(), false, Default::default(), cx);
|
||
}
|
||
}
|
||
|
||
/// Replaces the buffer's entire text.
|
||
pub fn set_text<T>(&mut self, text: T, cx: &mut ModelContext<Self>) -> Option<clock::Lamport>
|
||
where
|
||
T: Into<Arc<str>>,
|
||
{
|
||
self.autoindent_requests.clear();
|
||
self.edit([(0..self.len(), text)], None, cx)
|
||
}
|
||
|
||
/// Applies the given edits to the buffer. Each edit is specified as a range of text to
|
||
/// delete, and a string of text to insert at that location.
|
||
///
|
||
/// If an [`AutoindentMode`] is provided, then the buffer will enqueue an auto-indent
|
||
/// request for the edited ranges, which will be processed when the buffer finishes
|
||
/// parsing.
|
||
///
|
||
/// Parsing takes place at the end of a transaction, and may compute synchronously
|
||
/// or asynchronously, depending on the changes.
|
||
pub fn edit<I, S, T>(
|
||
&mut self,
|
||
edits_iter: I,
|
||
autoindent_mode: Option<AutoindentMode>,
|
||
cx: &mut ModelContext<Self>,
|
||
) -> Option<clock::Lamport>
|
||
where
|
||
I: IntoIterator<Item = (Range<S>, T)>,
|
||
S: ToOffset,
|
||
T: Into<Arc<str>>,
|
||
{
|
||
// Skip invalid edits and coalesce contiguous ones.
|
||
let mut edits: Vec<(Range<usize>, Arc<str>)> = Vec::new();
|
||
for (range, new_text) in edits_iter {
|
||
let mut range = range.start.to_offset(self)..range.end.to_offset(self);
|
||
if range.start > range.end {
|
||
mem::swap(&mut range.start, &mut range.end);
|
||
}
|
||
let new_text = new_text.into();
|
||
if !new_text.is_empty() || !range.is_empty() {
|
||
if let Some((prev_range, prev_text)) = edits.last_mut() {
|
||
if prev_range.end >= range.start {
|
||
prev_range.end = cmp::max(prev_range.end, range.end);
|
||
*prev_text = format!("{prev_text}{new_text}").into();
|
||
} else {
|
||
edits.push((range, new_text));
|
||
}
|
||
} else {
|
||
edits.push((range, new_text));
|
||
}
|
||
}
|
||
}
|
||
if edits.is_empty() {
|
||
return None;
|
||
}
|
||
|
||
self.start_transaction();
|
||
self.pending_autoindent.take();
|
||
let autoindent_request = autoindent_mode
|
||
.and_then(|mode| self.language.as_ref().map(|_| (self.snapshot(), mode)));
|
||
|
||
let edit_operation = self.text.edit(edits.iter().cloned());
|
||
let edit_id = edit_operation.timestamp();
|
||
|
||
if let Some((before_edit, mode)) = autoindent_request {
|
||
let mut delta = 0isize;
|
||
let entries = edits
|
||
.into_iter()
|
||
.enumerate()
|
||
.zip(&edit_operation.as_edit().unwrap().new_text)
|
||
.map(|((ix, (range, _)), new_text)| {
|
||
let new_text_length = new_text.len();
|
||
let old_start = range.start.to_point(&before_edit);
|
||
let new_start = (delta + range.start as isize) as usize;
|
||
delta += new_text_length as isize - (range.end as isize - range.start as isize);
|
||
|
||
let mut range_of_insertion_to_indent = 0..new_text_length;
|
||
let mut first_line_is_new = false;
|
||
let mut original_indent_column = None;
|
||
|
||
// When inserting an entire line at the beginning of an existing line,
|
||
// treat the insertion as new.
|
||
if new_text.contains('\n')
|
||
&& old_start.column <= before_edit.indent_size_for_line(old_start.row).len
|
||
{
|
||
first_line_is_new = true;
|
||
}
|
||
|
||
// When inserting text starting with a newline, avoid auto-indenting the
|
||
// previous line.
|
||
if new_text.starts_with('\n') {
|
||
range_of_insertion_to_indent.start += 1;
|
||
first_line_is_new = true;
|
||
}
|
||
|
||
// Avoid auto-indenting after the insertion.
|
||
if let AutoindentMode::Block {
|
||
original_indent_columns,
|
||
} = &mode
|
||
{
|
||
original_indent_column =
|
||
Some(original_indent_columns.get(ix).copied().unwrap_or_else(|| {
|
||
indent_size_for_text(
|
||
new_text[range_of_insertion_to_indent.clone()].chars(),
|
||
)
|
||
.len
|
||
}));
|
||
if new_text[range_of_insertion_to_indent.clone()].ends_with('\n') {
|
||
range_of_insertion_to_indent.end -= 1;
|
||
}
|
||
}
|
||
|
||
AutoindentRequestEntry {
|
||
first_line_is_new,
|
||
original_indent_column,
|
||
indent_size: before_edit.language_indent_size_at(range.start, cx),
|
||
range: self.anchor_before(new_start + range_of_insertion_to_indent.start)
|
||
..self.anchor_after(new_start + range_of_insertion_to_indent.end),
|
||
}
|
||
})
|
||
.collect();
|
||
|
||
self.autoindent_requests.push(Arc::new(AutoindentRequest {
|
||
before_edit,
|
||
entries,
|
||
is_block_mode: matches!(mode, AutoindentMode::Block { .. }),
|
||
}));
|
||
}
|
||
|
||
self.end_transaction(cx);
|
||
self.send_operation(Operation::Buffer(edit_operation), true, cx);
|
||
Some(edit_id)
|
||
}
|
||
|
||
fn did_edit(
|
||
&mut self,
|
||
old_version: &clock::Global,
|
||
was_dirty: bool,
|
||
cx: &mut ModelContext<Self>,
|
||
) {
|
||
if self.edits_since::<usize>(old_version).next().is_none() {
|
||
return;
|
||
}
|
||
|
||
self.reparse(cx);
|
||
|
||
cx.emit(BufferEvent::Edited);
|
||
if was_dirty != self.is_dirty() {
|
||
cx.emit(BufferEvent::DirtyChanged);
|
||
}
|
||
cx.notify();
|
||
}
|
||
|
||
// Inserts newlines at the given position to create an empty line, returning the start of the new line.
|
||
// You can also request the insertion of empty lines above and below the line starting at the returned point.
|
||
pub fn insert_empty_line(
|
||
&mut self,
|
||
position: impl ToPoint,
|
||
space_above: bool,
|
||
space_below: bool,
|
||
cx: &mut ModelContext<Self>,
|
||
) -> Point {
|
||
let mut position = position.to_point(self);
|
||
|
||
self.start_transaction();
|
||
|
||
self.edit(
|
||
[(position..position, "\n")],
|
||
Some(AutoindentMode::EachLine),
|
||
cx,
|
||
);
|
||
|
||
if position.column > 0 {
|
||
position += Point::new(1, 0);
|
||
}
|
||
|
||
if !self.is_line_blank(position.row) {
|
||
self.edit(
|
||
[(position..position, "\n")],
|
||
Some(AutoindentMode::EachLine),
|
||
cx,
|
||
);
|
||
}
|
||
|
||
if space_above && position.row > 0 && !self.is_line_blank(position.row - 1) {
|
||
self.edit(
|
||
[(position..position, "\n")],
|
||
Some(AutoindentMode::EachLine),
|
||
cx,
|
||
);
|
||
position.row += 1;
|
||
}
|
||
|
||
if space_below
|
||
&& (position.row == self.max_point().row || !self.is_line_blank(position.row + 1))
|
||
{
|
||
self.edit(
|
||
[(position..position, "\n")],
|
||
Some(AutoindentMode::EachLine),
|
||
cx,
|
||
);
|
||
}
|
||
|
||
self.end_transaction(cx);
|
||
|
||
position
|
||
}
|
||
|
||
/// Applies the given remote operations to the buffer.
|
||
pub fn apply_ops<I: IntoIterator<Item = Operation>>(
|
||
&mut self,
|
||
ops: I,
|
||
cx: &mut ModelContext<Self>,
|
||
) {
|
||
self.pending_autoindent.take();
|
||
let was_dirty = self.is_dirty();
|
||
let old_version = self.version.clone();
|
||
let mut deferred_ops = Vec::new();
|
||
let buffer_ops = ops
|
||
.into_iter()
|
||
.filter_map(|op| match op {
|
||
Operation::Buffer(op) => Some(op),
|
||
_ => {
|
||
if self.can_apply_op(&op) {
|
||
self.apply_op(op, cx);
|
||
} else {
|
||
deferred_ops.push(op);
|
||
}
|
||
None
|
||
}
|
||
})
|
||
.collect::<Vec<_>>();
|
||
for operation in buffer_ops.iter() {
|
||
self.send_operation(Operation::Buffer(operation.clone()), false, cx);
|
||
}
|
||
self.text.apply_ops(buffer_ops);
|
||
self.deferred_ops.insert(deferred_ops);
|
||
self.flush_deferred_ops(cx);
|
||
self.did_edit(&old_version, was_dirty, cx);
|
||
// Notify independently of whether the buffer was edited as the operations could include a
|
||
// selection update.
|
||
cx.notify();
|
||
}
|
||
|
||
fn flush_deferred_ops(&mut self, cx: &mut ModelContext<Self>) {
|
||
let mut deferred_ops = Vec::new();
|
||
for op in self.deferred_ops.drain().iter().cloned() {
|
||
if self.can_apply_op(&op) {
|
||
self.apply_op(op, cx);
|
||
} else {
|
||
deferred_ops.push(op);
|
||
}
|
||
}
|
||
self.deferred_ops.insert(deferred_ops);
|
||
}
|
||
|
||
pub fn has_deferred_ops(&self) -> bool {
|
||
!self.deferred_ops.is_empty() || self.text.has_deferred_ops()
|
||
}
|
||
|
||
fn can_apply_op(&self, operation: &Operation) -> bool {
|
||
match operation {
|
||
Operation::Buffer(_) => {
|
||
unreachable!("buffer operations should never be applied at this layer")
|
||
}
|
||
Operation::UpdateDiagnostics {
|
||
diagnostics: diagnostic_set,
|
||
..
|
||
} => diagnostic_set.iter().all(|diagnostic| {
|
||
self.text.can_resolve(&diagnostic.range.start)
|
||
&& self.text.can_resolve(&diagnostic.range.end)
|
||
}),
|
||
Operation::UpdateSelections { selections, .. } => selections
|
||
.iter()
|
||
.all(|s| self.can_resolve(&s.start) && self.can_resolve(&s.end)),
|
||
Operation::UpdateCompletionTriggers { .. } => true,
|
||
}
|
||
}
|
||
|
||
fn apply_op(&mut self, operation: Operation, cx: &mut ModelContext<Self>) {
|
||
match operation {
|
||
Operation::Buffer(_) => {
|
||
unreachable!("buffer operations should never be applied at this layer")
|
||
}
|
||
Operation::UpdateDiagnostics {
|
||
server_id,
|
||
diagnostics: diagnostic_set,
|
||
lamport_timestamp,
|
||
} => {
|
||
let snapshot = self.snapshot();
|
||
self.apply_diagnostic_update(
|
||
server_id,
|
||
DiagnosticSet::from_sorted_entries(diagnostic_set.iter().cloned(), &snapshot),
|
||
lamport_timestamp,
|
||
cx,
|
||
);
|
||
}
|
||
Operation::UpdateSelections {
|
||
selections,
|
||
lamport_timestamp,
|
||
line_mode,
|
||
cursor_shape,
|
||
} => {
|
||
if let Some(set) = self.remote_selections.get(&lamport_timestamp.replica_id) {
|
||
if set.lamport_timestamp > lamport_timestamp {
|
||
return;
|
||
}
|
||
}
|
||
|
||
self.remote_selections.insert(
|
||
lamport_timestamp.replica_id,
|
||
SelectionSet {
|
||
selections,
|
||
lamport_timestamp,
|
||
line_mode,
|
||
cursor_shape,
|
||
},
|
||
);
|
||
self.text.lamport_clock.observe(lamport_timestamp);
|
||
self.non_text_state_update_count += 1;
|
||
}
|
||
Operation::UpdateCompletionTriggers {
|
||
triggers,
|
||
lamport_timestamp,
|
||
} => {
|
||
self.completion_triggers = triggers;
|
||
self.text.lamport_clock.observe(lamport_timestamp);
|
||
}
|
||
}
|
||
}
|
||
|
||
fn apply_diagnostic_update(
|
||
&mut self,
|
||
server_id: LanguageServerId,
|
||
diagnostics: DiagnosticSet,
|
||
lamport_timestamp: clock::Lamport,
|
||
cx: &mut ModelContext<Self>,
|
||
) {
|
||
if lamport_timestamp > self.diagnostics_timestamp {
|
||
let ix = self.diagnostics.binary_search_by_key(&server_id, |e| e.0);
|
||
if diagnostics.is_empty() {
|
||
if let Ok(ix) = ix {
|
||
self.diagnostics.remove(ix);
|
||
}
|
||
} else {
|
||
match ix {
|
||
Err(ix) => self.diagnostics.insert(ix, (server_id, diagnostics)),
|
||
Ok(ix) => self.diagnostics[ix].1 = diagnostics,
|
||
};
|
||
}
|
||
self.diagnostics_timestamp = lamport_timestamp;
|
||
self.non_text_state_update_count += 1;
|
||
self.text.lamport_clock.observe(lamport_timestamp);
|
||
cx.notify();
|
||
cx.emit(BufferEvent::DiagnosticsUpdated);
|
||
}
|
||
}
|
||
|
||
fn send_operation(&self, operation: Operation, is_local: bool, cx: &mut ModelContext<Self>) {
|
||
cx.emit(BufferEvent::Operation {
|
||
operation,
|
||
is_local,
|
||
});
|
||
}
|
||
|
||
/// Removes the selections for a given peer.
|
||
pub fn remove_peer(&mut self, replica_id: ReplicaId, cx: &mut ModelContext<Self>) {
|
||
self.remote_selections.remove(&replica_id);
|
||
cx.notify();
|
||
}
|
||
|
||
/// Undoes the most recent transaction.
|
||
pub fn undo(&mut self, cx: &mut ModelContext<Self>) -> Option<TransactionId> {
|
||
let was_dirty = self.is_dirty();
|
||
let old_version = self.version.clone();
|
||
|
||
if let Some((transaction_id, operation)) = self.text.undo() {
|
||
self.send_operation(Operation::Buffer(operation), true, cx);
|
||
self.did_edit(&old_version, was_dirty, cx);
|
||
Some(transaction_id)
|
||
} else {
|
||
None
|
||
}
|
||
}
|
||
|
||
/// Manually undoes a specific transaction in the buffer's undo history.
|
||
pub fn undo_transaction(
|
||
&mut self,
|
||
transaction_id: TransactionId,
|
||
cx: &mut ModelContext<Self>,
|
||
) -> bool {
|
||
let was_dirty = self.is_dirty();
|
||
let old_version = self.version.clone();
|
||
if let Some(operation) = self.text.undo_transaction(transaction_id) {
|
||
self.send_operation(Operation::Buffer(operation), true, cx);
|
||
self.did_edit(&old_version, was_dirty, cx);
|
||
true
|
||
} else {
|
||
false
|
||
}
|
||
}
|
||
|
||
/// Manually undoes all changes after a given transaction in the buffer's undo history.
|
||
pub fn undo_to_transaction(
|
||
&mut self,
|
||
transaction_id: TransactionId,
|
||
cx: &mut ModelContext<Self>,
|
||
) -> bool {
|
||
let was_dirty = self.is_dirty();
|
||
let old_version = self.version.clone();
|
||
|
||
let operations = self.text.undo_to_transaction(transaction_id);
|
||
let undone = !operations.is_empty();
|
||
for operation in operations {
|
||
self.send_operation(Operation::Buffer(operation), true, cx);
|
||
}
|
||
if undone {
|
||
self.did_edit(&old_version, was_dirty, cx)
|
||
}
|
||
undone
|
||
}
|
||
|
||
/// Manually redoes a specific transaction in the buffer's redo history.
|
||
pub fn redo(&mut self, cx: &mut ModelContext<Self>) -> Option<TransactionId> {
|
||
let was_dirty = self.is_dirty();
|
||
let old_version = self.version.clone();
|
||
|
||
if let Some((transaction_id, operation)) = self.text.redo() {
|
||
self.send_operation(Operation::Buffer(operation), true, cx);
|
||
self.did_edit(&old_version, was_dirty, cx);
|
||
Some(transaction_id)
|
||
} else {
|
||
None
|
||
}
|
||
}
|
||
|
||
/// Manually undoes all changes until a given transaction in the buffer's redo history.
|
||
pub fn redo_to_transaction(
|
||
&mut self,
|
||
transaction_id: TransactionId,
|
||
cx: &mut ModelContext<Self>,
|
||
) -> bool {
|
||
let was_dirty = self.is_dirty();
|
||
let old_version = self.version.clone();
|
||
|
||
let operations = self.text.redo_to_transaction(transaction_id);
|
||
let redone = !operations.is_empty();
|
||
for operation in operations {
|
||
self.send_operation(Operation::Buffer(operation), true, cx);
|
||
}
|
||
if redone {
|
||
self.did_edit(&old_version, was_dirty, cx)
|
||
}
|
||
redone
|
||
}
|
||
|
||
/// Override current completion triggers with the user-provided completion triggers.
|
||
pub fn set_completion_triggers(&mut self, triggers: Vec<String>, cx: &mut ModelContext<Self>) {
|
||
self.completion_triggers.clone_from(&triggers);
|
||
self.completion_triggers_timestamp = self.text.lamport_clock.tick();
|
||
self.send_operation(
|
||
Operation::UpdateCompletionTriggers {
|
||
triggers,
|
||
lamport_timestamp: self.completion_triggers_timestamp,
|
||
},
|
||
true,
|
||
cx,
|
||
);
|
||
cx.notify();
|
||
}
|
||
|
||
/// Returns a list of strings which trigger a completion menu for this language.
|
||
/// Usually this is driven by LSP server which returns a list of trigger characters for completions.
|
||
pub fn completion_triggers(&self) -> &[String] {
|
||
&self.completion_triggers
|
||
}
|
||
|
||
/// Call this directly after performing edits to prevent the preview tab
|
||
/// from being dismissed by those edits. It causes `should_dismiss_preview`
|
||
/// to return false until there are additional edits.
|
||
pub fn refresh_preview(&mut self) {
|
||
self.preview_version = self.version.clone();
|
||
}
|
||
|
||
/// Whether we should preserve the preview status of a tab containing this buffer.
|
||
pub fn preserve_preview(&self) -> bool {
|
||
!self.has_edits_since(&self.preview_version)
|
||
}
|
||
}
|
||
|
||
#[doc(hidden)]
|
||
#[cfg(any(test, feature = "test-support"))]
|
||
impl Buffer {
|
||
pub fn edit_via_marked_text(
|
||
&mut self,
|
||
marked_string: &str,
|
||
autoindent_mode: Option<AutoindentMode>,
|
||
cx: &mut ModelContext<Self>,
|
||
) {
|
||
let edits = self.edits_for_marked_text(marked_string);
|
||
self.edit(edits, autoindent_mode, cx);
|
||
}
|
||
|
||
pub fn set_group_interval(&mut self, group_interval: Duration) {
|
||
self.text.set_group_interval(group_interval);
|
||
}
|
||
|
||
pub fn randomly_edit<T>(
|
||
&mut self,
|
||
rng: &mut T,
|
||
old_range_count: usize,
|
||
cx: &mut ModelContext<Self>,
|
||
) where
|
||
T: rand::Rng,
|
||
{
|
||
let mut edits: Vec<(Range<usize>, String)> = Vec::new();
|
||
let mut last_end = None;
|
||
for _ in 0..old_range_count {
|
||
if last_end.map_or(false, |last_end| last_end >= self.len()) {
|
||
break;
|
||
}
|
||
|
||
let new_start = last_end.map_or(0, |last_end| last_end + 1);
|
||
let mut range = self.random_byte_range(new_start, rng);
|
||
if rng.gen_bool(0.2) {
|
||
mem::swap(&mut range.start, &mut range.end);
|
||
}
|
||
last_end = Some(range.end);
|
||
|
||
let new_text_len = rng.gen_range(0..10);
|
||
let new_text: String = RandomCharIter::new(&mut *rng).take(new_text_len).collect();
|
||
|
||
edits.push((range, new_text));
|
||
}
|
||
log::info!("mutating buffer {} with {:?}", self.replica_id(), edits);
|
||
self.edit(edits, None, cx);
|
||
}
|
||
|
||
pub fn randomly_undo_redo(&mut self, rng: &mut impl rand::Rng, cx: &mut ModelContext<Self>) {
|
||
let was_dirty = self.is_dirty();
|
||
let old_version = self.version.clone();
|
||
|
||
let ops = self.text.randomly_undo_redo(rng);
|
||
if !ops.is_empty() {
|
||
for op in ops {
|
||
self.send_operation(Operation::Buffer(op), true, cx);
|
||
self.did_edit(&old_version, was_dirty, cx);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
impl EventEmitter<BufferEvent> for Buffer {}
|
||
|
||
impl Deref for Buffer {
|
||
type Target = TextBuffer;
|
||
|
||
fn deref(&self) -> &Self::Target {
|
||
&self.text
|
||
}
|
||
}
|
||
|
||
impl BufferSnapshot {
|
||
/// Returns [`IndentSize`] for a given line that respects user settings and /// language preferences.
|
||
pub fn indent_size_for_line(&self, row: u32) -> IndentSize {
|
||
indent_size_for_line(self, row)
|
||
}
|
||
/// Returns [`IndentSize`] for a given position that respects user settings
|
||
/// and language preferences.
|
||
pub fn language_indent_size_at<T: ToOffset>(&self, position: T, cx: &AppContext) -> IndentSize {
|
||
let settings = language_settings(self.language_at(position), self.file(), cx);
|
||
if settings.hard_tabs {
|
||
IndentSize::tab()
|
||
} else {
|
||
IndentSize::spaces(settings.tab_size.get())
|
||
}
|
||
}
|
||
|
||
/// Retrieve the suggested indent size for all of the given rows. The unit of indentation
|
||
/// is passed in as `single_indent_size`.
|
||
pub fn suggested_indents(
|
||
&self,
|
||
rows: impl Iterator<Item = u32>,
|
||
single_indent_size: IndentSize,
|
||
) -> BTreeMap<u32, IndentSize> {
|
||
let mut result = BTreeMap::new();
|
||
|
||
for row_range in contiguous_ranges(rows, 10) {
|
||
let suggestions = match self.suggest_autoindents(row_range.clone()) {
|
||
Some(suggestions) => suggestions,
|
||
_ => break,
|
||
};
|
||
|
||
for (row, suggestion) in row_range.zip(suggestions) {
|
||
let indent_size = if let Some(suggestion) = suggestion {
|
||
result
|
||
.get(&suggestion.basis_row)
|
||
.copied()
|
||
.unwrap_or_else(|| self.indent_size_for_line(suggestion.basis_row))
|
||
.with_delta(suggestion.delta, single_indent_size)
|
||
} else {
|
||
self.indent_size_for_line(row)
|
||
};
|
||
|
||
result.insert(row, indent_size);
|
||
}
|
||
}
|
||
|
||
result
|
||
}
|
||
|
||
fn suggest_autoindents(
|
||
&self,
|
||
row_range: Range<u32>,
|
||
) -> Option<impl Iterator<Item = Option<IndentSuggestion>> + '_> {
|
||
let config = &self.language.as_ref()?.config;
|
||
let prev_non_blank_row = self.prev_non_blank_row(row_range.start);
|
||
|
||
// Find the suggested indentation ranges based on the syntax tree.
|
||
let start = Point::new(prev_non_blank_row.unwrap_or(row_range.start), 0);
|
||
let end = Point::new(row_range.end, 0);
|
||
let range = (start..end).to_offset(&self.text);
|
||
let mut matches = self.syntax.matches(range.clone(), &self.text, |grammar| {
|
||
Some(&grammar.indents_config.as_ref()?.query)
|
||
});
|
||
let indent_configs = matches
|
||
.grammars()
|
||
.iter()
|
||
.map(|grammar| grammar.indents_config.as_ref().unwrap())
|
||
.collect::<Vec<_>>();
|
||
|
||
let mut indent_ranges = Vec::<Range<Point>>::new();
|
||
let mut outdent_positions = Vec::<Point>::new();
|
||
while let Some(mat) = matches.peek() {
|
||
let mut start: Option<Point> = None;
|
||
let mut end: Option<Point> = None;
|
||
|
||
let config = &indent_configs[mat.grammar_index];
|
||
for capture in mat.captures {
|
||
if capture.index == config.indent_capture_ix {
|
||
start.get_or_insert(Point::from_ts_point(capture.node.start_position()));
|
||
end.get_or_insert(Point::from_ts_point(capture.node.end_position()));
|
||
} else if Some(capture.index) == config.start_capture_ix {
|
||
start = Some(Point::from_ts_point(capture.node.end_position()));
|
||
} else if Some(capture.index) == config.end_capture_ix {
|
||
end = Some(Point::from_ts_point(capture.node.start_position()));
|
||
} else if Some(capture.index) == config.outdent_capture_ix {
|
||
outdent_positions.push(Point::from_ts_point(capture.node.start_position()));
|
||
}
|
||
}
|
||
|
||
matches.advance();
|
||
if let Some((start, end)) = start.zip(end) {
|
||
if start.row == end.row {
|
||
continue;
|
||
}
|
||
|
||
let range = start..end;
|
||
match indent_ranges.binary_search_by_key(&range.start, |r| r.start) {
|
||
Err(ix) => indent_ranges.insert(ix, range),
|
||
Ok(ix) => {
|
||
let prev_range = &mut indent_ranges[ix];
|
||
prev_range.end = prev_range.end.max(range.end);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
let mut error_ranges = Vec::<Range<Point>>::new();
|
||
let mut matches = self.syntax.matches(range.clone(), &self.text, |grammar| {
|
||
Some(&grammar.error_query)
|
||
});
|
||
while let Some(mat) = matches.peek() {
|
||
let node = mat.captures[0].node;
|
||
let start = Point::from_ts_point(node.start_position());
|
||
let end = Point::from_ts_point(node.end_position());
|
||
let range = start..end;
|
||
let ix = match error_ranges.binary_search_by_key(&range.start, |r| r.start) {
|
||
Ok(ix) | Err(ix) => ix,
|
||
};
|
||
let mut end_ix = ix;
|
||
while let Some(existing_range) = error_ranges.get(end_ix) {
|
||
if existing_range.end < end {
|
||
end_ix += 1;
|
||
} else {
|
||
break;
|
||
}
|
||
}
|
||
error_ranges.splice(ix..end_ix, [range]);
|
||
matches.advance();
|
||
}
|
||
|
||
outdent_positions.sort();
|
||
for outdent_position in outdent_positions {
|
||
// find the innermost indent range containing this outdent_position
|
||
// set its end to the outdent position
|
||
if let Some(range_to_truncate) = indent_ranges
|
||
.iter_mut()
|
||
.filter(|indent_range| indent_range.contains(&outdent_position))
|
||
.last()
|
||
{
|
||
range_to_truncate.end = outdent_position;
|
||
}
|
||
}
|
||
|
||
// Find the suggested indentation increases and decreased based on regexes.
|
||
let mut indent_change_rows = Vec::<(u32, Ordering)>::new();
|
||
self.for_each_line(
|
||
Point::new(prev_non_blank_row.unwrap_or(row_range.start), 0)
|
||
..Point::new(row_range.end, 0),
|
||
|row, line| {
|
||
if config
|
||
.decrease_indent_pattern
|
||
.as_ref()
|
||
.map_or(false, |regex| regex.is_match(line))
|
||
{
|
||
indent_change_rows.push((row, Ordering::Less));
|
||
}
|
||
if config
|
||
.increase_indent_pattern
|
||
.as_ref()
|
||
.map_or(false, |regex| regex.is_match(line))
|
||
{
|
||
indent_change_rows.push((row + 1, Ordering::Greater));
|
||
}
|
||
},
|
||
);
|
||
|
||
let mut indent_changes = indent_change_rows.into_iter().peekable();
|
||
let mut prev_row = if config.auto_indent_using_last_non_empty_line {
|
||
prev_non_blank_row.unwrap_or(0)
|
||
} else {
|
||
row_range.start.saturating_sub(1)
|
||
};
|
||
let mut prev_row_start = Point::new(prev_row, self.indent_size_for_line(prev_row).len);
|
||
Some(row_range.map(move |row| {
|
||
let row_start = Point::new(row, self.indent_size_for_line(row).len);
|
||
|
||
let mut indent_from_prev_row = false;
|
||
let mut outdent_from_prev_row = false;
|
||
let mut outdent_to_row = u32::MAX;
|
||
|
||
while let Some((indent_row, delta)) = indent_changes.peek() {
|
||
match indent_row.cmp(&row) {
|
||
Ordering::Equal => match delta {
|
||
Ordering::Less => outdent_from_prev_row = true,
|
||
Ordering::Greater => indent_from_prev_row = true,
|
||
_ => {}
|
||
},
|
||
|
||
Ordering::Greater => break,
|
||
Ordering::Less => {}
|
||
}
|
||
|
||
indent_changes.next();
|
||
}
|
||
|
||
for range in &indent_ranges {
|
||
if range.start.row >= row {
|
||
break;
|
||
}
|
||
if range.start.row == prev_row && range.end > row_start {
|
||
indent_from_prev_row = true;
|
||
}
|
||
if range.end > prev_row_start && range.end <= row_start {
|
||
outdent_to_row = outdent_to_row.min(range.start.row);
|
||
}
|
||
}
|
||
|
||
let within_error = error_ranges
|
||
.iter()
|
||
.any(|e| e.start.row < row && e.end > row_start);
|
||
|
||
let suggestion = if outdent_to_row == prev_row
|
||
|| (outdent_from_prev_row && indent_from_prev_row)
|
||
{
|
||
Some(IndentSuggestion {
|
||
basis_row: prev_row,
|
||
delta: Ordering::Equal,
|
||
within_error,
|
||
})
|
||
} else if indent_from_prev_row {
|
||
Some(IndentSuggestion {
|
||
basis_row: prev_row,
|
||
delta: Ordering::Greater,
|
||
within_error,
|
||
})
|
||
} else if outdent_to_row < prev_row {
|
||
Some(IndentSuggestion {
|
||
basis_row: outdent_to_row,
|
||
delta: Ordering::Equal,
|
||
within_error,
|
||
})
|
||
} else if outdent_from_prev_row {
|
||
Some(IndentSuggestion {
|
||
basis_row: prev_row,
|
||
delta: Ordering::Less,
|
||
within_error,
|
||
})
|
||
} else if config.auto_indent_using_last_non_empty_line || !self.is_line_blank(prev_row)
|
||
{
|
||
Some(IndentSuggestion {
|
||
basis_row: prev_row,
|
||
delta: Ordering::Equal,
|
||
within_error,
|
||
})
|
||
} else {
|
||
None
|
||
};
|
||
|
||
prev_row = row;
|
||
prev_row_start = row_start;
|
||
suggestion
|
||
}))
|
||
}
|
||
|
||
fn prev_non_blank_row(&self, mut row: u32) -> Option<u32> {
|
||
while row > 0 {
|
||
row -= 1;
|
||
if !self.is_line_blank(row) {
|
||
return Some(row);
|
||
}
|
||
}
|
||
None
|
||
}
|
||
|
||
fn get_highlights(&self, range: Range<usize>) -> (SyntaxMapCaptures, Vec<HighlightMap>) {
|
||
let captures = self.syntax.captures(range, &self.text, |grammar| {
|
||
grammar.highlights_query.as_ref()
|
||
});
|
||
let highlight_maps = captures
|
||
.grammars()
|
||
.iter()
|
||
.map(|grammar| grammar.highlight_map())
|
||
.collect();
|
||
(captures, highlight_maps)
|
||
}
|
||
|
||
/// Iterates over chunks of text in the given range of the buffer. Text is chunked
|
||
/// in an arbitrary way due to being stored in a [`Rope`](text::Rope). The text is also
|
||
/// returned in chunks where each chunk has a single syntax highlighting style and
|
||
/// diagnostic status.
|
||
pub fn chunks<T: ToOffset>(&self, range: Range<T>, language_aware: bool) -> BufferChunks {
|
||
let range = range.start.to_offset(self)..range.end.to_offset(self);
|
||
|
||
let mut syntax = None;
|
||
if language_aware {
|
||
syntax = Some(self.get_highlights(range.clone()));
|
||
}
|
||
// We want to look at diagnostic spans only when iterating over language-annotated chunks.
|
||
let diagnostics = language_aware;
|
||
BufferChunks::new(self.text.as_rope(), range, syntax, diagnostics, Some(self))
|
||
}
|
||
|
||
/// Invokes the given callback for each line of text in the given range of the buffer.
|
||
/// Uses callback to avoid allocating a string for each line.
|
||
fn for_each_line(&self, range: Range<Point>, mut callback: impl FnMut(u32, &str)) {
|
||
let mut line = String::new();
|
||
let mut row = range.start.row;
|
||
for chunk in self
|
||
.as_rope()
|
||
.chunks_in_range(range.to_offset(self))
|
||
.chain(["\n"])
|
||
{
|
||
for (newline_ix, text) in chunk.split('\n').enumerate() {
|
||
if newline_ix > 0 {
|
||
callback(row, &line);
|
||
row += 1;
|
||
line.clear();
|
||
}
|
||
line.push_str(text);
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Iterates over every [`SyntaxLayer`] in the buffer.
|
||
pub fn syntax_layers(&self) -> impl Iterator<Item = SyntaxLayer> + '_ {
|
||
self.syntax
|
||
.layers_for_range(0..self.len(), &self.text, true)
|
||
}
|
||
|
||
pub fn syntax_layer_at<D: ToOffset>(&self, position: D) -> Option<SyntaxLayer> {
|
||
let offset = position.to_offset(self);
|
||
self.syntax
|
||
.layers_for_range(offset..offset, &self.text, false)
|
||
.filter(|l| l.node().end_byte() > offset)
|
||
.last()
|
||
}
|
||
|
||
/// Returns the main [`Language`].
|
||
pub fn language(&self) -> Option<&Arc<Language>> {
|
||
self.language.as_ref()
|
||
}
|
||
|
||
/// Returns the [`Language`] at the given location.
|
||
pub fn language_at<D: ToOffset>(&self, position: D) -> Option<&Arc<Language>> {
|
||
self.syntax_layer_at(position)
|
||
.map(|info| info.language)
|
||
.or(self.language.as_ref())
|
||
}
|
||
|
||
/// Returns the settings for the language at the given location.
|
||
pub fn settings_at<'a, D: ToOffset>(
|
||
&self,
|
||
position: D,
|
||
cx: &'a AppContext,
|
||
) -> &'a LanguageSettings {
|
||
language_settings(self.language_at(position), self.file.as_ref(), cx)
|
||
}
|
||
|
||
pub fn char_classifier_at<T: ToOffset>(&self, point: T) -> CharClassifier {
|
||
CharClassifier::new(self.language_scope_at(point))
|
||
}
|
||
|
||
/// Returns the [`LanguageScope`] at the given location.
|
||
pub fn language_scope_at<D: ToOffset>(&self, position: D) -> Option<LanguageScope> {
|
||
let offset = position.to_offset(self);
|
||
let mut scope = None;
|
||
let mut smallest_range: Option<Range<usize>> = None;
|
||
|
||
// Use the layer that has the smallest node intersecting the given point.
|
||
for layer in self
|
||
.syntax
|
||
.layers_for_range(offset..offset, &self.text, false)
|
||
{
|
||
let mut cursor = layer.node().walk();
|
||
|
||
let mut range = None;
|
||
loop {
|
||
let child_range = cursor.node().byte_range();
|
||
if !child_range.to_inclusive().contains(&offset) {
|
||
break;
|
||
}
|
||
|
||
range = Some(child_range);
|
||
if cursor.goto_first_child_for_byte(offset).is_none() {
|
||
break;
|
||
}
|
||
}
|
||
|
||
if let Some(range) = range {
|
||
if smallest_range
|
||
.as_ref()
|
||
.map_or(true, |smallest_range| range.len() < smallest_range.len())
|
||
{
|
||
smallest_range = Some(range);
|
||
scope = Some(LanguageScope {
|
||
language: layer.language.clone(),
|
||
override_id: layer.override_id(offset, &self.text),
|
||
});
|
||
}
|
||
}
|
||
}
|
||
|
||
scope.or_else(|| {
|
||
self.language.clone().map(|language| LanguageScope {
|
||
language,
|
||
override_id: None,
|
||
})
|
||
})
|
||
}
|
||
|
||
/// Returns a tuple of the range and character kind of the word
|
||
/// surrounding the given position.
|
||
pub fn surrounding_word<T: ToOffset>(&self, start: T) -> (Range<usize>, Option<CharKind>) {
|
||
let mut start = start.to_offset(self);
|
||
let mut end = start;
|
||
let mut next_chars = self.chars_at(start).peekable();
|
||
let mut prev_chars = self.reversed_chars_at(start).peekable();
|
||
|
||
let classifier = self.char_classifier_at(start);
|
||
let word_kind = cmp::max(
|
||
prev_chars.peek().copied().map(|c| classifier.kind(c)),
|
||
next_chars.peek().copied().map(|c| classifier.kind(c)),
|
||
);
|
||
|
||
for ch in prev_chars {
|
||
if Some(classifier.kind(ch)) == word_kind && ch != '\n' {
|
||
start -= ch.len_utf8();
|
||
} else {
|
||
break;
|
||
}
|
||
}
|
||
|
||
for ch in next_chars {
|
||
if Some(classifier.kind(ch)) == word_kind && ch != '\n' {
|
||
end += ch.len_utf8();
|
||
} else {
|
||
break;
|
||
}
|
||
}
|
||
|
||
(start..end, word_kind)
|
||
}
|
||
|
||
/// Returns the range for the closes syntax node enclosing the given range.
|
||
pub fn range_for_syntax_ancestor<T: ToOffset>(&self, range: Range<T>) -> Option<Range<usize>> {
|
||
let range = range.start.to_offset(self)..range.end.to_offset(self);
|
||
let mut result: Option<Range<usize>> = None;
|
||
'outer: for layer in self
|
||
.syntax
|
||
.layers_for_range(range.clone(), &self.text, true)
|
||
{
|
||
let mut cursor = layer.node().walk();
|
||
|
||
// Descend to the first leaf that touches the start of the range,
|
||
// and if the range is non-empty, extends beyond the start.
|
||
while cursor.goto_first_child_for_byte(range.start).is_some() {
|
||
if !range.is_empty() && cursor.node().end_byte() == range.start {
|
||
cursor.goto_next_sibling();
|
||
}
|
||
}
|
||
|
||
// Ascend to the smallest ancestor that strictly contains the range.
|
||
loop {
|
||
let node_range = cursor.node().byte_range();
|
||
if node_range.start <= range.start
|
||
&& node_range.end >= range.end
|
||
&& node_range.len() > range.len()
|
||
{
|
||
break;
|
||
}
|
||
if !cursor.goto_parent() {
|
||
continue 'outer;
|
||
}
|
||
}
|
||
|
||
let left_node = cursor.node();
|
||
let mut layer_result = left_node.byte_range();
|
||
|
||
// For an empty range, try to find another node immediately to the right of the range.
|
||
if left_node.end_byte() == range.start {
|
||
let mut right_node = None;
|
||
while !cursor.goto_next_sibling() {
|
||
if !cursor.goto_parent() {
|
||
break;
|
||
}
|
||
}
|
||
|
||
while cursor.node().start_byte() == range.start {
|
||
right_node = Some(cursor.node());
|
||
if !cursor.goto_first_child() {
|
||
break;
|
||
}
|
||
}
|
||
|
||
// If there is a candidate node on both sides of the (empty) range, then
|
||
// decide between the two by favoring a named node over an anonymous token.
|
||
// If both nodes are the same in that regard, favor the right one.
|
||
if let Some(right_node) = right_node {
|
||
if right_node.is_named() || !left_node.is_named() {
|
||
layer_result = right_node.byte_range();
|
||
}
|
||
}
|
||
}
|
||
|
||
if let Some(previous_result) = &result {
|
||
if previous_result.len() < layer_result.len() {
|
||
continue;
|
||
}
|
||
}
|
||
result = Some(layer_result);
|
||
}
|
||
|
||
result
|
||
}
|
||
|
||
/// Returns the outline for the buffer.
|
||
///
|
||
/// This method allows passing an optional [`SyntaxTheme`] to
|
||
/// syntax-highlight the returned symbols.
|
||
pub fn outline(&self, theme: Option<&SyntaxTheme>) -> Option<Outline<Anchor>> {
|
||
self.outline_items_containing(0..self.len(), true, theme)
|
||
.map(Outline::new)
|
||
}
|
||
|
||
/// Returns all the symbols that contain the given position.
|
||
///
|
||
/// This method allows passing an optional [`SyntaxTheme`] to
|
||
/// syntax-highlight the returned symbols.
|
||
pub fn symbols_containing<T: ToOffset>(
|
||
&self,
|
||
position: T,
|
||
theme: Option<&SyntaxTheme>,
|
||
) -> Option<Vec<OutlineItem<Anchor>>> {
|
||
let position = position.to_offset(self);
|
||
let mut items = self.outline_items_containing(
|
||
position.saturating_sub(1)..self.len().min(position + 1),
|
||
false,
|
||
theme,
|
||
)?;
|
||
let mut prev_depth = None;
|
||
items.retain(|item| {
|
||
let result = prev_depth.map_or(true, |prev_depth| item.depth > prev_depth);
|
||
prev_depth = Some(item.depth);
|
||
result
|
||
});
|
||
Some(items)
|
||
}
|
||
|
||
pub fn outline_items_containing<T: ToOffset>(
|
||
&self,
|
||
range: Range<T>,
|
||
include_extra_context: bool,
|
||
theme: Option<&SyntaxTheme>,
|
||
) -> Option<Vec<OutlineItem<Anchor>>> {
|
||
let range = range.to_offset(self);
|
||
let mut matches = self.syntax.matches(range.clone(), &self.text, |grammar| {
|
||
grammar.outline_config.as_ref().map(|c| &c.query)
|
||
});
|
||
let configs = matches
|
||
.grammars()
|
||
.iter()
|
||
.map(|g| g.outline_config.as_ref().unwrap())
|
||
.collect::<Vec<_>>();
|
||
|
||
let mut items = Vec::new();
|
||
let mut annotation_row_ranges: Vec<Range<u32>> = Vec::new();
|
||
while let Some(mat) = matches.peek() {
|
||
let config = &configs[mat.grammar_index];
|
||
if let Some(item) =
|
||
self.next_outline_item(config, &mat, &range, include_extra_context, theme)
|
||
{
|
||
items.push(item);
|
||
} else if let Some(capture) = mat
|
||
.captures
|
||
.iter()
|
||
.find(|capture| Some(capture.index) == config.annotation_capture_ix)
|
||
{
|
||
let capture_range = capture.node.start_position()..capture.node.end_position();
|
||
let mut capture_row_range =
|
||
capture_range.start.row as u32..capture_range.end.row as u32;
|
||
if capture_range.end.row > capture_range.start.row && capture_range.end.column == 0
|
||
{
|
||
capture_row_range.end -= 1;
|
||
}
|
||
if let Some(last_row_range) = annotation_row_ranges.last_mut() {
|
||
if last_row_range.end >= capture_row_range.start.saturating_sub(1) {
|
||
last_row_range.end = capture_row_range.end;
|
||
} else {
|
||
annotation_row_ranges.push(capture_row_range);
|
||
}
|
||
} else {
|
||
annotation_row_ranges.push(capture_row_range);
|
||
}
|
||
}
|
||
matches.advance();
|
||
}
|
||
|
||
items.sort_by_key(|item| (item.range.start, Reverse(item.range.end)));
|
||
|
||
// Assign depths based on containment relationships and convert to anchors.
|
||
let mut item_ends_stack = Vec::<Point>::new();
|
||
let mut anchor_items = Vec::new();
|
||
let mut annotation_row_ranges = annotation_row_ranges.into_iter().peekable();
|
||
for item in items {
|
||
while let Some(last_end) = item_ends_stack.last().copied() {
|
||
if last_end < item.range.end {
|
||
item_ends_stack.pop();
|
||
} else {
|
||
break;
|
||
}
|
||
}
|
||
|
||
let mut annotation_row_range = None;
|
||
while let Some(next_annotation_row_range) = annotation_row_ranges.peek() {
|
||
let row_preceding_item = item.range.start.row.saturating_sub(1);
|
||
if next_annotation_row_range.end < row_preceding_item {
|
||
annotation_row_ranges.next();
|
||
} else {
|
||
if next_annotation_row_range.end == row_preceding_item {
|
||
annotation_row_range = Some(next_annotation_row_range.clone());
|
||
annotation_row_ranges.next();
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
anchor_items.push(OutlineItem {
|
||
depth: item_ends_stack.len(),
|
||
range: self.anchor_after(item.range.start)..self.anchor_before(item.range.end),
|
||
text: item.text,
|
||
highlight_ranges: item.highlight_ranges,
|
||
name_ranges: item.name_ranges,
|
||
body_range: item.body_range.map(|body_range| {
|
||
self.anchor_after(body_range.start)..self.anchor_before(body_range.end)
|
||
}),
|
||
annotation_range: annotation_row_range.map(|annotation_range| {
|
||
self.anchor_after(Point::new(annotation_range.start, 0))
|
||
..self.anchor_before(Point::new(
|
||
annotation_range.end,
|
||
self.line_len(annotation_range.end),
|
||
))
|
||
}),
|
||
});
|
||
item_ends_stack.push(item.range.end);
|
||
}
|
||
|
||
Some(anchor_items)
|
||
}
|
||
|
||
fn next_outline_item(
|
||
&self,
|
||
config: &OutlineConfig,
|
||
mat: &SyntaxMapMatch,
|
||
range: &Range<usize>,
|
||
include_extra_context: bool,
|
||
theme: Option<&SyntaxTheme>,
|
||
) -> Option<OutlineItem<Point>> {
|
||
let item_node = mat.captures.iter().find_map(|cap| {
|
||
if cap.index == config.item_capture_ix {
|
||
Some(cap.node)
|
||
} else {
|
||
None
|
||
}
|
||
})?;
|
||
|
||
let item_byte_range = item_node.byte_range();
|
||
if item_byte_range.end < range.start || item_byte_range.start > range.end {
|
||
return None;
|
||
}
|
||
let item_point_range = Point::from_ts_point(item_node.start_position())
|
||
..Point::from_ts_point(item_node.end_position());
|
||
|
||
let mut open_point = None;
|
||
let mut close_point = None;
|
||
let mut buffer_ranges = Vec::new();
|
||
for capture in mat.captures {
|
||
let node_is_name;
|
||
if capture.index == config.name_capture_ix {
|
||
node_is_name = true;
|
||
} else if Some(capture.index) == config.context_capture_ix
|
||
|| (Some(capture.index) == config.extra_context_capture_ix && include_extra_context)
|
||
{
|
||
node_is_name = false;
|
||
} else {
|
||
if Some(capture.index) == config.open_capture_ix {
|
||
open_point = Some(Point::from_ts_point(capture.node.end_position()));
|
||
} else if Some(capture.index) == config.close_capture_ix {
|
||
close_point = Some(Point::from_ts_point(capture.node.start_position()));
|
||
}
|
||
|
||
continue;
|
||
}
|
||
|
||
let mut range = capture.node.start_byte()..capture.node.end_byte();
|
||
let start = capture.node.start_position();
|
||
if capture.node.end_position().row > start.row {
|
||
range.end = range.start + self.line_len(start.row as u32) as usize - start.column;
|
||
}
|
||
|
||
if !range.is_empty() {
|
||
buffer_ranges.push((range, node_is_name));
|
||
}
|
||
}
|
||
if buffer_ranges.is_empty() {
|
||
return None;
|
||
}
|
||
let mut text = String::new();
|
||
let mut highlight_ranges = Vec::new();
|
||
let mut name_ranges = Vec::new();
|
||
let mut chunks = self.chunks(
|
||
buffer_ranges.first().unwrap().0.start..buffer_ranges.last().unwrap().0.end,
|
||
true,
|
||
);
|
||
let mut last_buffer_range_end = 0;
|
||
for (buffer_range, is_name) in buffer_ranges {
|
||
if !text.is_empty() && buffer_range.start > last_buffer_range_end {
|
||
text.push(' ');
|
||
}
|
||
last_buffer_range_end = buffer_range.end;
|
||
if is_name {
|
||
let mut start = text.len();
|
||
let end = start + buffer_range.len();
|
||
|
||
// When multiple names are captured, then the matchable text
|
||
// includes the whitespace in between the names.
|
||
if !name_ranges.is_empty() {
|
||
start -= 1;
|
||
}
|
||
|
||
name_ranges.push(start..end);
|
||
}
|
||
|
||
let mut offset = buffer_range.start;
|
||
chunks.seek(buffer_range.clone());
|
||
for mut chunk in chunks.by_ref() {
|
||
if chunk.text.len() > buffer_range.end - offset {
|
||
chunk.text = &chunk.text[0..(buffer_range.end - offset)];
|
||
offset = buffer_range.end;
|
||
} else {
|
||
offset += chunk.text.len();
|
||
}
|
||
let style = chunk
|
||
.syntax_highlight_id
|
||
.zip(theme)
|
||
.and_then(|(highlight, theme)| highlight.style(theme));
|
||
if let Some(style) = style {
|
||
let start = text.len();
|
||
let end = start + chunk.text.len();
|
||
highlight_ranges.push((start..end, style));
|
||
}
|
||
text.push_str(chunk.text);
|
||
if offset >= buffer_range.end {
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
Some(OutlineItem {
|
||
depth: 0, // We'll calculate the depth later
|
||
range: item_point_range,
|
||
text,
|
||
highlight_ranges,
|
||
name_ranges,
|
||
body_range: open_point.zip(close_point).map(|(start, end)| start..end),
|
||
annotation_range: None,
|
||
})
|
||
}
|
||
|
||
/// For each grammar in the language, runs the provided
|
||
/// [`tree_sitter::Query`] against the given range.
|
||
pub fn matches(
|
||
&self,
|
||
range: Range<usize>,
|
||
query: fn(&Grammar) -> Option<&tree_sitter::Query>,
|
||
) -> SyntaxMapMatches {
|
||
self.syntax.matches(range, self, query)
|
||
}
|
||
|
||
/// Returns bracket range pairs overlapping or adjacent to `range`
|
||
pub fn bracket_ranges<T: ToOffset>(
|
||
&self,
|
||
range: Range<T>,
|
||
) -> impl Iterator<Item = (Range<usize>, Range<usize>)> + '_ {
|
||
// Find bracket pairs that *inclusively* contain the given range.
|
||
let range = range.start.to_offset(self).saturating_sub(1)
|
||
..self.len().min(range.end.to_offset(self) + 1);
|
||
|
||
let mut matches = self.syntax.matches(range.clone(), &self.text, |grammar| {
|
||
grammar.brackets_config.as_ref().map(|c| &c.query)
|
||
});
|
||
let configs = matches
|
||
.grammars()
|
||
.iter()
|
||
.map(|grammar| grammar.brackets_config.as_ref().unwrap())
|
||
.collect::<Vec<_>>();
|
||
|
||
iter::from_fn(move || {
|
||
while let Some(mat) = matches.peek() {
|
||
let mut open = None;
|
||
let mut close = None;
|
||
let config = &configs[mat.grammar_index];
|
||
for capture in mat.captures {
|
||
if capture.index == config.open_capture_ix {
|
||
open = Some(capture.node.byte_range());
|
||
} else if capture.index == config.close_capture_ix {
|
||
close = Some(capture.node.byte_range());
|
||
}
|
||
}
|
||
|
||
matches.advance();
|
||
|
||
let Some((open, close)) = open.zip(close) else {
|
||
continue;
|
||
};
|
||
|
||
let bracket_range = open.start..=close.end;
|
||
if !bracket_range.overlaps(&range) {
|
||
continue;
|
||
}
|
||
|
||
return Some((open, close));
|
||
}
|
||
None
|
||
})
|
||
}
|
||
|
||
/// Returns enclosing bracket ranges containing the given range
|
||
pub fn enclosing_bracket_ranges<T: ToOffset>(
|
||
&self,
|
||
range: Range<T>,
|
||
) -> impl Iterator<Item = (Range<usize>, Range<usize>)> + '_ {
|
||
let range = range.start.to_offset(self)..range.end.to_offset(self);
|
||
|
||
self.bracket_ranges(range.clone())
|
||
.filter(move |(open, close)| open.start <= range.start && close.end >= range.end)
|
||
}
|
||
|
||
/// Returns the smallest enclosing bracket ranges containing the given range or None if no brackets contain range
|
||
///
|
||
/// Can optionally pass a range_filter to filter the ranges of brackets to consider
|
||
pub fn innermost_enclosing_bracket_ranges<T: ToOffset>(
|
||
&self,
|
||
range: Range<T>,
|
||
range_filter: Option<&dyn Fn(Range<usize>, Range<usize>) -> bool>,
|
||
) -> Option<(Range<usize>, Range<usize>)> {
|
||
let range = range.start.to_offset(self)..range.end.to_offset(self);
|
||
|
||
// Get the ranges of the innermost pair of brackets.
|
||
let mut result: Option<(Range<usize>, Range<usize>)> = None;
|
||
|
||
for (open, close) in self.enclosing_bracket_ranges(range.clone()) {
|
||
if let Some(range_filter) = range_filter {
|
||
if !range_filter(open.clone(), close.clone()) {
|
||
continue;
|
||
}
|
||
}
|
||
|
||
let len = close.end - open.start;
|
||
|
||
if let Some((existing_open, existing_close)) = &result {
|
||
let existing_len = existing_close.end - existing_open.start;
|
||
if len > existing_len {
|
||
continue;
|
||
}
|
||
}
|
||
|
||
result = Some((open, close));
|
||
}
|
||
|
||
result
|
||
}
|
||
|
||
/// Returns anchor ranges for any matches of the redaction query.
|
||
/// The buffer can be associated with multiple languages, and the redaction query associated with each
|
||
/// will be run on the relevant section of the buffer.
|
||
pub fn redacted_ranges<T: ToOffset>(
|
||
&self,
|
||
range: Range<T>,
|
||
) -> impl Iterator<Item = Range<usize>> + '_ {
|
||
let offset_range = range.start.to_offset(self)..range.end.to_offset(self);
|
||
let mut syntax_matches = self.syntax.matches(offset_range, self, |grammar| {
|
||
grammar
|
||
.redactions_config
|
||
.as_ref()
|
||
.map(|config| &config.query)
|
||
});
|
||
|
||
let configs = syntax_matches
|
||
.grammars()
|
||
.iter()
|
||
.map(|grammar| grammar.redactions_config.as_ref())
|
||
.collect::<Vec<_>>();
|
||
|
||
iter::from_fn(move || {
|
||
let redacted_range = syntax_matches
|
||
.peek()
|
||
.and_then(|mat| {
|
||
configs[mat.grammar_index].and_then(|config| {
|
||
mat.captures
|
||
.iter()
|
||
.find(|capture| capture.index == config.redaction_capture_ix)
|
||
})
|
||
})
|
||
.map(|mat| mat.node.byte_range());
|
||
syntax_matches.advance();
|
||
redacted_range
|
||
})
|
||
}
|
||
|
||
pub fn injections_intersecting_range<T: ToOffset>(
|
||
&self,
|
||
range: Range<T>,
|
||
) -> impl Iterator<Item = (Range<usize>, &Arc<Language>)> + '_ {
|
||
let offset_range = range.start.to_offset(self)..range.end.to_offset(self);
|
||
|
||
let mut syntax_matches = self.syntax.matches(offset_range, self, |grammar| {
|
||
grammar
|
||
.injection_config
|
||
.as_ref()
|
||
.map(|config| &config.query)
|
||
});
|
||
|
||
let configs = syntax_matches
|
||
.grammars()
|
||
.iter()
|
||
.map(|grammar| grammar.injection_config.as_ref())
|
||
.collect::<Vec<_>>();
|
||
|
||
iter::from_fn(move || {
|
||
let ranges = syntax_matches.peek().and_then(|mat| {
|
||
let config = &configs[mat.grammar_index]?;
|
||
let content_capture_range = mat.captures.iter().find_map(|capture| {
|
||
if capture.index == config.content_capture_ix {
|
||
Some(capture.node.byte_range())
|
||
} else {
|
||
None
|
||
}
|
||
})?;
|
||
let language = self.language_at(content_capture_range.start)?;
|
||
Some((content_capture_range, language))
|
||
});
|
||
syntax_matches.advance();
|
||
ranges
|
||
})
|
||
}
|
||
|
||
pub fn runnable_ranges(
|
||
&self,
|
||
range: Range<Anchor>,
|
||
) -> impl Iterator<Item = RunnableRange> + '_ {
|
||
let offset_range = range.start.to_offset(self)..range.end.to_offset(self);
|
||
|
||
let mut syntax_matches = self.syntax.matches(offset_range, self, |grammar| {
|
||
grammar.runnable_config.as_ref().map(|config| &config.query)
|
||
});
|
||
|
||
let test_configs = syntax_matches
|
||
.grammars()
|
||
.iter()
|
||
.map(|grammar| grammar.runnable_config.as_ref())
|
||
.collect::<Vec<_>>();
|
||
|
||
iter::from_fn(move || loop {
|
||
let mat = syntax_matches.peek()?;
|
||
|
||
let test_range = test_configs[mat.grammar_index].and_then(|test_configs| {
|
||
let mut run_range = None;
|
||
let full_range = mat.captures.iter().fold(
|
||
Range {
|
||
start: usize::MAX,
|
||
end: 0,
|
||
},
|
||
|mut acc, next| {
|
||
let byte_range = next.node.byte_range();
|
||
if acc.start > byte_range.start {
|
||
acc.start = byte_range.start;
|
||
}
|
||
if acc.end < byte_range.end {
|
||
acc.end = byte_range.end;
|
||
}
|
||
acc
|
||
},
|
||
);
|
||
if full_range.start > full_range.end {
|
||
// We did not find a full spanning range of this match.
|
||
return None;
|
||
}
|
||
let extra_captures: SmallVec<[_; 1]> =
|
||
SmallVec::from_iter(mat.captures.iter().filter_map(|capture| {
|
||
test_configs
|
||
.extra_captures
|
||
.get(capture.index as usize)
|
||
.cloned()
|
||
.and_then(|tag_name| match tag_name {
|
||
RunnableCapture::Named(name) => {
|
||
Some((capture.node.byte_range(), name))
|
||
}
|
||
RunnableCapture::Run => {
|
||
let _ = run_range.insert(capture.node.byte_range());
|
||
None
|
||
}
|
||
})
|
||
}));
|
||
let run_range = run_range?;
|
||
let tags = test_configs
|
||
.query
|
||
.property_settings(mat.pattern_index)
|
||
.iter()
|
||
.filter_map(|property| {
|
||
if *property.key == *"tag" {
|
||
property
|
||
.value
|
||
.as_ref()
|
||
.map(|value| RunnableTag(value.to_string().into()))
|
||
} else {
|
||
None
|
||
}
|
||
})
|
||
.collect();
|
||
let extra_captures = extra_captures
|
||
.into_iter()
|
||
.map(|(range, name)| {
|
||
(
|
||
name.to_string(),
|
||
self.text_for_range(range.clone()).collect::<String>(),
|
||
)
|
||
})
|
||
.collect();
|
||
// All tags should have the same range.
|
||
Some(RunnableRange {
|
||
run_range,
|
||
full_range,
|
||
runnable: Runnable {
|
||
tags,
|
||
language: mat.language,
|
||
buffer: self.remote_id(),
|
||
},
|
||
extra_captures,
|
||
buffer_id: self.remote_id(),
|
||
})
|
||
});
|
||
|
||
syntax_matches.advance();
|
||
if test_range.is_some() {
|
||
// It's fine for us to short-circuit on .peek()? returning None. We don't want to return None from this iter if we
|
||
// had a capture that did not contain a run marker, hence we'll just loop around for the next capture.
|
||
return test_range;
|
||
}
|
||
})
|
||
}
|
||
|
||
pub fn indent_guides_in_range(
|
||
&self,
|
||
range: Range<Anchor>,
|
||
ignore_disabled_for_language: bool,
|
||
cx: &AppContext,
|
||
) -> Vec<IndentGuide> {
|
||
let language_settings = language_settings(self.language(), self.file.as_ref(), cx);
|
||
let settings = language_settings.indent_guides;
|
||
if !ignore_disabled_for_language && !settings.enabled {
|
||
return Vec::new();
|
||
}
|
||
let tab_size = language_settings.tab_size.get() as u32;
|
||
|
||
let start_row = range.start.to_point(self).row;
|
||
let end_row = range.end.to_point(self).row;
|
||
let row_range = start_row..end_row + 1;
|
||
|
||
let mut row_indents = self.line_indents_in_row_range(row_range.clone());
|
||
|
||
let mut result_vec = Vec::new();
|
||
let mut indent_stack = SmallVec::<[IndentGuide; 8]>::new();
|
||
|
||
while let Some((first_row, mut line_indent)) = row_indents.next() {
|
||
let current_depth = indent_stack.len() as u32;
|
||
|
||
// When encountering empty, continue until found useful line indent
|
||
// then add to the indent stack with the depth found
|
||
let mut found_indent = false;
|
||
let mut last_row = first_row;
|
||
if line_indent.is_line_empty() {
|
||
let mut trailing_row = end_row;
|
||
while !found_indent {
|
||
let (target_row, new_line_indent) =
|
||
if let Some(display_row) = row_indents.next() {
|
||
display_row
|
||
} else {
|
||
// This means we reached the end of the given range and found empty lines at the end.
|
||
// We need to traverse further until we find a non-empty line to know if we need to add
|
||
// an indent guide for the last visible indent.
|
||
trailing_row += 1;
|
||
|
||
const TRAILING_ROW_SEARCH_LIMIT: u32 = 25;
|
||
if trailing_row > self.max_point().row
|
||
|| trailing_row > end_row + TRAILING_ROW_SEARCH_LIMIT
|
||
{
|
||
break;
|
||
}
|
||
let new_line_indent = self.line_indent_for_row(trailing_row);
|
||
(trailing_row, new_line_indent)
|
||
};
|
||
|
||
if new_line_indent.is_line_empty() {
|
||
continue;
|
||
}
|
||
last_row = target_row.min(end_row);
|
||
line_indent = new_line_indent;
|
||
found_indent = true;
|
||
break;
|
||
}
|
||
} else {
|
||
found_indent = true
|
||
}
|
||
|
||
let depth = if found_indent {
|
||
line_indent.len(tab_size) / tab_size
|
||
+ ((line_indent.len(tab_size) % tab_size) > 0) as u32
|
||
} else {
|
||
current_depth
|
||
};
|
||
|
||
match depth.cmp(¤t_depth) {
|
||
Ordering::Less => {
|
||
for _ in 0..(current_depth - depth) {
|
||
let mut indent = indent_stack.pop().unwrap();
|
||
if last_row != first_row {
|
||
// In this case, we landed on an empty row, had to seek forward,
|
||
// and discovered that the indent we where on is ending.
|
||
// This means that the last display row must
|
||
// be on line that ends this indent range, so we
|
||
// should display the range up to the first non-empty line
|
||
indent.end_row = first_row.saturating_sub(1);
|
||
}
|
||
|
||
result_vec.push(indent)
|
||
}
|
||
}
|
||
Ordering::Greater => {
|
||
for next_depth in current_depth..depth {
|
||
indent_stack.push(IndentGuide {
|
||
buffer_id: self.remote_id(),
|
||
start_row: first_row,
|
||
end_row: last_row,
|
||
depth: next_depth,
|
||
tab_size,
|
||
settings,
|
||
});
|
||
}
|
||
}
|
||
_ => {}
|
||
}
|
||
|
||
for indent in indent_stack.iter_mut() {
|
||
indent.end_row = last_row;
|
||
}
|
||
}
|
||
|
||
result_vec.extend(indent_stack);
|
||
|
||
result_vec
|
||
}
|
||
|
||
pub async fn enclosing_indent(
|
||
&self,
|
||
mut buffer_row: BufferRow,
|
||
) -> Option<(Range<BufferRow>, LineIndent)> {
|
||
let max_row = self.max_point().row;
|
||
if buffer_row >= max_row {
|
||
return None;
|
||
}
|
||
|
||
let mut target_indent = self.line_indent_for_row(buffer_row);
|
||
|
||
// If the current row is at the start of an indented block, we want to return this
|
||
// block as the enclosing indent.
|
||
if !target_indent.is_line_empty() && buffer_row < max_row {
|
||
let next_line_indent = self.line_indent_for_row(buffer_row + 1);
|
||
if !next_line_indent.is_line_empty()
|
||
&& target_indent.raw_len() < next_line_indent.raw_len()
|
||
{
|
||
target_indent = next_line_indent;
|
||
buffer_row += 1;
|
||
}
|
||
}
|
||
|
||
const SEARCH_ROW_LIMIT: u32 = 25000;
|
||
const SEARCH_WHITESPACE_ROW_LIMIT: u32 = 2500;
|
||
const YIELD_INTERVAL: u32 = 100;
|
||
|
||
let mut accessed_row_counter = 0;
|
||
|
||
// If there is a blank line at the current row, search for the next non indented lines
|
||
if target_indent.is_line_empty() {
|
||
let start = buffer_row.saturating_sub(SEARCH_WHITESPACE_ROW_LIMIT);
|
||
let end = (max_row + 1).min(buffer_row + SEARCH_WHITESPACE_ROW_LIMIT);
|
||
|
||
let mut non_empty_line_above = None;
|
||
for (row, indent) in self
|
||
.text
|
||
.reversed_line_indents_in_row_range(start..buffer_row)
|
||
{
|
||
accessed_row_counter += 1;
|
||
if accessed_row_counter == YIELD_INTERVAL {
|
||
accessed_row_counter = 0;
|
||
yield_now().await;
|
||
}
|
||
if !indent.is_line_empty() {
|
||
non_empty_line_above = Some((row, indent));
|
||
break;
|
||
}
|
||
}
|
||
|
||
let mut non_empty_line_below = None;
|
||
for (row, indent) in self.text.line_indents_in_row_range((buffer_row + 1)..end) {
|
||
accessed_row_counter += 1;
|
||
if accessed_row_counter == YIELD_INTERVAL {
|
||
accessed_row_counter = 0;
|
||
yield_now().await;
|
||
}
|
||
if !indent.is_line_empty() {
|
||
non_empty_line_below = Some((row, indent));
|
||
break;
|
||
}
|
||
}
|
||
|
||
let (row, indent) = match (non_empty_line_above, non_empty_line_below) {
|
||
(Some((above_row, above_indent)), Some((below_row, below_indent))) => {
|
||
if above_indent.raw_len() >= below_indent.raw_len() {
|
||
(above_row, above_indent)
|
||
} else {
|
||
(below_row, below_indent)
|
||
}
|
||
}
|
||
(Some(above), None) => above,
|
||
(None, Some(below)) => below,
|
||
_ => return None,
|
||
};
|
||
|
||
target_indent = indent;
|
||
buffer_row = row;
|
||
}
|
||
|
||
let start = buffer_row.saturating_sub(SEARCH_ROW_LIMIT);
|
||
let end = (max_row + 1).min(buffer_row + SEARCH_ROW_LIMIT);
|
||
|
||
let mut start_indent = None;
|
||
for (row, indent) in self
|
||
.text
|
||
.reversed_line_indents_in_row_range(start..buffer_row)
|
||
{
|
||
accessed_row_counter += 1;
|
||
if accessed_row_counter == YIELD_INTERVAL {
|
||
accessed_row_counter = 0;
|
||
yield_now().await;
|
||
}
|
||
if !indent.is_line_empty() && indent.raw_len() < target_indent.raw_len() {
|
||
start_indent = Some((row, indent));
|
||
break;
|
||
}
|
||
}
|
||
let (start_row, start_indent_size) = start_indent?;
|
||
|
||
let mut end_indent = (end, None);
|
||
for (row, indent) in self.text.line_indents_in_row_range((buffer_row + 1)..end) {
|
||
accessed_row_counter += 1;
|
||
if accessed_row_counter == YIELD_INTERVAL {
|
||
accessed_row_counter = 0;
|
||
yield_now().await;
|
||
}
|
||
if !indent.is_line_empty() && indent.raw_len() < target_indent.raw_len() {
|
||
end_indent = (row.saturating_sub(1), Some(indent));
|
||
break;
|
||
}
|
||
}
|
||
let (end_row, end_indent_size) = end_indent;
|
||
|
||
let indent = if let Some(end_indent_size) = end_indent_size {
|
||
if start_indent_size.raw_len() > end_indent_size.raw_len() {
|
||
start_indent_size
|
||
} else {
|
||
end_indent_size
|
||
}
|
||
} else {
|
||
start_indent_size
|
||
};
|
||
|
||
Some((start_row..end_row, indent))
|
||
}
|
||
|
||
/// Returns selections for remote peers intersecting the given range.
|
||
#[allow(clippy::type_complexity)]
|
||
pub fn selections_in_range(
|
||
&self,
|
||
range: Range<Anchor>,
|
||
include_local: bool,
|
||
) -> impl Iterator<
|
||
Item = (
|
||
ReplicaId,
|
||
bool,
|
||
CursorShape,
|
||
impl Iterator<Item = &Selection<Anchor>> + '_,
|
||
),
|
||
> + '_ {
|
||
self.remote_selections
|
||
.iter()
|
||
.filter(move |(replica_id, set)| {
|
||
(include_local || **replica_id != self.text.replica_id())
|
||
&& !set.selections.is_empty()
|
||
})
|
||
.map(move |(replica_id, set)| {
|
||
let start_ix = match set.selections.binary_search_by(|probe| {
|
||
probe.end.cmp(&range.start, self).then(Ordering::Greater)
|
||
}) {
|
||
Ok(ix) | Err(ix) => ix,
|
||
};
|
||
let end_ix = match set.selections.binary_search_by(|probe| {
|
||
probe.start.cmp(&range.end, self).then(Ordering::Less)
|
||
}) {
|
||
Ok(ix) | Err(ix) => ix,
|
||
};
|
||
|
||
(
|
||
*replica_id,
|
||
set.line_mode,
|
||
set.cursor_shape,
|
||
set.selections[start_ix..end_ix].iter(),
|
||
)
|
||
})
|
||
}
|
||
|
||
/// Whether the buffer contains any Git changes.
|
||
pub fn has_git_diff(&self) -> bool {
|
||
!self.git_diff.is_empty()
|
||
}
|
||
|
||
/// Returns all the Git diff hunks intersecting the given row range.
|
||
#[cfg(any(test, feature = "test-support"))]
|
||
pub fn git_diff_hunks_in_row_range(
|
||
&self,
|
||
range: Range<BufferRow>,
|
||
) -> impl '_ + Iterator<Item = git::diff::DiffHunk> {
|
||
self.git_diff.hunks_in_row_range(range, self)
|
||
}
|
||
|
||
/// Returns all the Git diff hunks intersecting the given
|
||
/// range.
|
||
pub fn git_diff_hunks_intersecting_range(
|
||
&self,
|
||
range: Range<Anchor>,
|
||
) -> impl '_ + Iterator<Item = git::diff::DiffHunk> {
|
||
self.git_diff.hunks_intersecting_range(range, self)
|
||
}
|
||
|
||
/// Returns all the Git diff hunks intersecting the given
|
||
/// range, in reverse order.
|
||
pub fn git_diff_hunks_intersecting_range_rev(
|
||
&self,
|
||
range: Range<Anchor>,
|
||
) -> impl '_ + Iterator<Item = git::diff::DiffHunk> {
|
||
self.git_diff.hunks_intersecting_range_rev(range, self)
|
||
}
|
||
|
||
/// Returns if the buffer contains any diagnostics.
|
||
pub fn has_diagnostics(&self) -> bool {
|
||
!self.diagnostics.is_empty()
|
||
}
|
||
|
||
/// Returns all the diagnostics intersecting the given range.
|
||
pub fn diagnostics_in_range<'a, T, O>(
|
||
&'a self,
|
||
search_range: Range<T>,
|
||
reversed: bool,
|
||
) -> impl 'a + Iterator<Item = DiagnosticEntry<O>>
|
||
where
|
||
T: 'a + Clone + ToOffset,
|
||
O: 'a + FromAnchor + Ord,
|
||
{
|
||
let mut iterators: Vec<_> = self
|
||
.diagnostics
|
||
.iter()
|
||
.map(|(_, collection)| {
|
||
collection
|
||
.range::<T, O>(search_range.clone(), self, true, reversed)
|
||
.peekable()
|
||
})
|
||
.collect();
|
||
|
||
std::iter::from_fn(move || {
|
||
let (next_ix, _) = iterators
|
||
.iter_mut()
|
||
.enumerate()
|
||
.flat_map(|(ix, iter)| Some((ix, iter.peek()?)))
|
||
.min_by(|(_, a), (_, b)| {
|
||
let cmp = a
|
||
.range
|
||
.start
|
||
.cmp(&b.range.start)
|
||
// when range is equal, sort by diagnostic severity
|
||
.then(a.diagnostic.severity.cmp(&b.diagnostic.severity))
|
||
// and stabilize order with group_id
|
||
.then(a.diagnostic.group_id.cmp(&b.diagnostic.group_id));
|
||
if reversed {
|
||
cmp.reverse()
|
||
} else {
|
||
cmp
|
||
}
|
||
})?;
|
||
iterators[next_ix].next()
|
||
})
|
||
}
|
||
|
||
/// Returns all the diagnostic groups associated with the given
|
||
/// language server ID. If no language server ID is provided,
|
||
/// all diagnostics groups are returned.
|
||
pub fn diagnostic_groups(
|
||
&self,
|
||
language_server_id: Option<LanguageServerId>,
|
||
) -> Vec<(LanguageServerId, DiagnosticGroup<Anchor>)> {
|
||
let mut groups = Vec::new();
|
||
|
||
if let Some(language_server_id) = language_server_id {
|
||
if let Ok(ix) = self
|
||
.diagnostics
|
||
.binary_search_by_key(&language_server_id, |e| e.0)
|
||
{
|
||
self.diagnostics[ix]
|
||
.1
|
||
.groups(language_server_id, &mut groups, self);
|
||
}
|
||
} else {
|
||
for (language_server_id, diagnostics) in self.diagnostics.iter() {
|
||
diagnostics.groups(*language_server_id, &mut groups, self);
|
||
}
|
||
}
|
||
|
||
groups.sort_by(|(id_a, group_a), (id_b, group_b)| {
|
||
let a_start = &group_a.entries[group_a.primary_ix].range.start;
|
||
let b_start = &group_b.entries[group_b.primary_ix].range.start;
|
||
a_start.cmp(b_start, self).then_with(|| id_a.cmp(id_b))
|
||
});
|
||
|
||
groups
|
||
}
|
||
|
||
/// Returns an iterator over the diagnostics for the given group.
|
||
pub fn diagnostic_group<'a, O>(
|
||
&'a self,
|
||
group_id: usize,
|
||
) -> impl 'a + Iterator<Item = DiagnosticEntry<O>>
|
||
where
|
||
O: 'a + FromAnchor,
|
||
{
|
||
self.diagnostics
|
||
.iter()
|
||
.flat_map(move |(_, set)| set.group(group_id, self))
|
||
}
|
||
|
||
/// An integer version number that accounts for all updates besides
|
||
/// the buffer's text itself (which is versioned via a version vector).
|
||
pub fn non_text_state_update_count(&self) -> usize {
|
||
self.non_text_state_update_count
|
||
}
|
||
|
||
/// Returns a snapshot of underlying file.
|
||
pub fn file(&self) -> Option<&Arc<dyn File>> {
|
||
self.file.as_ref()
|
||
}
|
||
|
||
/// Resolves the file path (relative to the worktree root) associated with the underlying file.
|
||
pub fn resolve_file_path(&self, cx: &AppContext, include_root: bool) -> Option<PathBuf> {
|
||
if let Some(file) = self.file() {
|
||
if file.path().file_name().is_none() || include_root {
|
||
Some(file.full_path(cx))
|
||
} else {
|
||
Some(file.path().to_path_buf())
|
||
}
|
||
} else {
|
||
None
|
||
}
|
||
}
|
||
}
|
||
|
||
fn indent_size_for_line(text: &text::BufferSnapshot, row: u32) -> IndentSize {
|
||
indent_size_for_text(text.chars_at(Point::new(row, 0)))
|
||
}
|
||
|
||
fn indent_size_for_text(text: impl Iterator<Item = char>) -> IndentSize {
|
||
let mut result = IndentSize::spaces(0);
|
||
for c in text {
|
||
let kind = match c {
|
||
' ' => IndentKind::Space,
|
||
'\t' => IndentKind::Tab,
|
||
_ => break,
|
||
};
|
||
if result.len == 0 {
|
||
result.kind = kind;
|
||
}
|
||
result.len += 1;
|
||
}
|
||
result
|
||
}
|
||
|
||
impl Clone for BufferSnapshot {
|
||
fn clone(&self) -> Self {
|
||
Self {
|
||
text: self.text.clone(),
|
||
git_diff: self.git_diff.clone(),
|
||
syntax: self.syntax.clone(),
|
||
file: self.file.clone(),
|
||
remote_selections: self.remote_selections.clone(),
|
||
diagnostics: self.diagnostics.clone(),
|
||
language: self.language.clone(),
|
||
non_text_state_update_count: self.non_text_state_update_count,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl Deref for BufferSnapshot {
|
||
type Target = text::BufferSnapshot;
|
||
|
||
fn deref(&self) -> &Self::Target {
|
||
&self.text
|
||
}
|
||
}
|
||
|
||
unsafe impl<'a> Send for BufferChunks<'a> {}
|
||
|
||
impl<'a> BufferChunks<'a> {
|
||
pub(crate) fn new(
|
||
text: &'a Rope,
|
||
range: Range<usize>,
|
||
syntax: Option<(SyntaxMapCaptures<'a>, Vec<HighlightMap>)>,
|
||
diagnostics: bool,
|
||
buffer_snapshot: Option<&'a BufferSnapshot>,
|
||
) -> Self {
|
||
let mut highlights = None;
|
||
if let Some((captures, highlight_maps)) = syntax {
|
||
highlights = Some(BufferChunkHighlights {
|
||
captures,
|
||
next_capture: None,
|
||
stack: Default::default(),
|
||
highlight_maps,
|
||
})
|
||
}
|
||
|
||
let diagnostic_endpoints = diagnostics.then(|| Vec::new().into_iter().peekable());
|
||
let chunks = text.chunks_in_range(range.clone());
|
||
|
||
let mut this = BufferChunks {
|
||
range,
|
||
buffer_snapshot,
|
||
chunks,
|
||
diagnostic_endpoints,
|
||
error_depth: 0,
|
||
warning_depth: 0,
|
||
information_depth: 0,
|
||
hint_depth: 0,
|
||
unnecessary_depth: 0,
|
||
highlights,
|
||
};
|
||
this.initialize_diagnostic_endpoints();
|
||
this
|
||
}
|
||
|
||
/// Seeks to the given byte offset in the buffer.
|
||
pub fn seek(&mut self, range: Range<usize>) {
|
||
let old_range = std::mem::replace(&mut self.range, range.clone());
|
||
self.chunks.set_range(self.range.clone());
|
||
if let Some(highlights) = self.highlights.as_mut() {
|
||
if old_range.start >= self.range.start && old_range.end <= self.range.end {
|
||
// Reuse existing highlights stack, as the new range is a subrange of the old one.
|
||
highlights
|
||
.stack
|
||
.retain(|(end_offset, _)| *end_offset > range.start);
|
||
if let Some(capture) = &highlights.next_capture {
|
||
if range.start >= capture.node.start_byte() {
|
||
let next_capture_end = capture.node.end_byte();
|
||
if range.start < next_capture_end {
|
||
highlights.stack.push((
|
||
next_capture_end,
|
||
highlights.highlight_maps[capture.grammar_index].get(capture.index),
|
||
));
|
||
}
|
||
highlights.next_capture.take();
|
||
}
|
||
}
|
||
} else if let Some(snapshot) = self.buffer_snapshot {
|
||
let (captures, highlight_maps) = snapshot.get_highlights(self.range.clone());
|
||
*highlights = BufferChunkHighlights {
|
||
captures,
|
||
next_capture: None,
|
||
stack: Default::default(),
|
||
highlight_maps,
|
||
};
|
||
} else {
|
||
// We cannot obtain new highlights for a language-aware buffer iterator, as we don't have a buffer snapshot.
|
||
// Seeking such BufferChunks is not supported.
|
||
debug_assert!(false, "Attempted to seek on a language-aware buffer iterator without associated buffer snapshot");
|
||
}
|
||
|
||
highlights.captures.set_byte_range(self.range.clone());
|
||
self.initialize_diagnostic_endpoints();
|
||
}
|
||
}
|
||
|
||
fn initialize_diagnostic_endpoints(&mut self) {
|
||
if let Some(diagnostics) = self.diagnostic_endpoints.as_mut() {
|
||
if let Some(buffer) = self.buffer_snapshot {
|
||
let mut diagnostic_endpoints = Vec::new();
|
||
for entry in buffer.diagnostics_in_range::<_, usize>(self.range.clone(), false) {
|
||
diagnostic_endpoints.push(DiagnosticEndpoint {
|
||
offset: entry.range.start,
|
||
is_start: true,
|
||
severity: entry.diagnostic.severity,
|
||
is_unnecessary: entry.diagnostic.is_unnecessary,
|
||
});
|
||
diagnostic_endpoints.push(DiagnosticEndpoint {
|
||
offset: entry.range.end,
|
||
is_start: false,
|
||
severity: entry.diagnostic.severity,
|
||
is_unnecessary: entry.diagnostic.is_unnecessary,
|
||
});
|
||
}
|
||
diagnostic_endpoints
|
||
.sort_unstable_by_key(|endpoint| (endpoint.offset, !endpoint.is_start));
|
||
*diagnostics = diagnostic_endpoints.into_iter().peekable();
|
||
}
|
||
}
|
||
}
|
||
|
||
/// The current byte offset in the buffer.
|
||
pub fn offset(&self) -> usize {
|
||
self.range.start
|
||
}
|
||
|
||
fn update_diagnostic_depths(&mut self, endpoint: DiagnosticEndpoint) {
|
||
let depth = match endpoint.severity {
|
||
DiagnosticSeverity::ERROR => &mut self.error_depth,
|
||
DiagnosticSeverity::WARNING => &mut self.warning_depth,
|
||
DiagnosticSeverity::INFORMATION => &mut self.information_depth,
|
||
DiagnosticSeverity::HINT => &mut self.hint_depth,
|
||
_ => return,
|
||
};
|
||
if endpoint.is_start {
|
||
*depth += 1;
|
||
} else {
|
||
*depth -= 1;
|
||
}
|
||
|
||
if endpoint.is_unnecessary {
|
||
if endpoint.is_start {
|
||
self.unnecessary_depth += 1;
|
||
} else {
|
||
self.unnecessary_depth -= 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
fn current_diagnostic_severity(&self) -> Option<DiagnosticSeverity> {
|
||
if self.error_depth > 0 {
|
||
Some(DiagnosticSeverity::ERROR)
|
||
} else if self.warning_depth > 0 {
|
||
Some(DiagnosticSeverity::WARNING)
|
||
} else if self.information_depth > 0 {
|
||
Some(DiagnosticSeverity::INFORMATION)
|
||
} else if self.hint_depth > 0 {
|
||
Some(DiagnosticSeverity::HINT)
|
||
} else {
|
||
None
|
||
}
|
||
}
|
||
|
||
fn current_code_is_unnecessary(&self) -> bool {
|
||
self.unnecessary_depth > 0
|
||
}
|
||
}
|
||
|
||
impl<'a> Iterator for BufferChunks<'a> {
|
||
type Item = Chunk<'a>;
|
||
|
||
fn next(&mut self) -> Option<Self::Item> {
|
||
let mut next_capture_start = usize::MAX;
|
||
let mut next_diagnostic_endpoint = usize::MAX;
|
||
|
||
if let Some(highlights) = self.highlights.as_mut() {
|
||
while let Some((parent_capture_end, _)) = highlights.stack.last() {
|
||
if *parent_capture_end <= self.range.start {
|
||
highlights.stack.pop();
|
||
} else {
|
||
break;
|
||
}
|
||
}
|
||
|
||
if highlights.next_capture.is_none() {
|
||
highlights.next_capture = highlights.captures.next();
|
||
}
|
||
|
||
while let Some(capture) = highlights.next_capture.as_ref() {
|
||
if self.range.start < capture.node.start_byte() {
|
||
next_capture_start = capture.node.start_byte();
|
||
break;
|
||
} else {
|
||
let highlight_id =
|
||
highlights.highlight_maps[capture.grammar_index].get(capture.index);
|
||
highlights
|
||
.stack
|
||
.push((capture.node.end_byte(), highlight_id));
|
||
highlights.next_capture = highlights.captures.next();
|
||
}
|
||
}
|
||
}
|
||
|
||
let mut diagnostic_endpoints = std::mem::take(&mut self.diagnostic_endpoints);
|
||
if let Some(diagnostic_endpoints) = diagnostic_endpoints.as_mut() {
|
||
while let Some(endpoint) = diagnostic_endpoints.peek().copied() {
|
||
if endpoint.offset <= self.range.start {
|
||
self.update_diagnostic_depths(endpoint);
|
||
diagnostic_endpoints.next();
|
||
} else {
|
||
next_diagnostic_endpoint = endpoint.offset;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
self.diagnostic_endpoints = diagnostic_endpoints;
|
||
|
||
if let Some(chunk) = self.chunks.peek() {
|
||
let chunk_start = self.range.start;
|
||
let mut chunk_end = (self.chunks.offset() + chunk.len())
|
||
.min(next_capture_start)
|
||
.min(next_diagnostic_endpoint);
|
||
let mut highlight_id = None;
|
||
if let Some(highlights) = self.highlights.as_ref() {
|
||
if let Some((parent_capture_end, parent_highlight_id)) = highlights.stack.last() {
|
||
chunk_end = chunk_end.min(*parent_capture_end);
|
||
highlight_id = Some(*parent_highlight_id);
|
||
}
|
||
}
|
||
|
||
let slice =
|
||
&chunk[chunk_start - self.chunks.offset()..chunk_end - self.chunks.offset()];
|
||
self.range.start = chunk_end;
|
||
if self.range.start == self.chunks.offset() + chunk.len() {
|
||
self.chunks.next().unwrap();
|
||
}
|
||
|
||
Some(Chunk {
|
||
text: slice,
|
||
syntax_highlight_id: highlight_id,
|
||
diagnostic_severity: self.current_diagnostic_severity(),
|
||
is_unnecessary: self.current_code_is_unnecessary(),
|
||
..Default::default()
|
||
})
|
||
} else {
|
||
None
|
||
}
|
||
}
|
||
}
|
||
|
||
impl operation_queue::Operation for Operation {
|
||
fn lamport_timestamp(&self) -> clock::Lamport {
|
||
match self {
|
||
Operation::Buffer(_) => {
|
||
unreachable!("buffer operations should never be deferred at this layer")
|
||
}
|
||
Operation::UpdateDiagnostics {
|
||
lamport_timestamp, ..
|
||
}
|
||
| Operation::UpdateSelections {
|
||
lamport_timestamp, ..
|
||
}
|
||
| Operation::UpdateCompletionTriggers {
|
||
lamport_timestamp, ..
|
||
} => *lamport_timestamp,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl Default for Diagnostic {
|
||
fn default() -> Self {
|
||
Self {
|
||
source: Default::default(),
|
||
code: None,
|
||
severity: DiagnosticSeverity::ERROR,
|
||
message: Default::default(),
|
||
group_id: 0,
|
||
is_primary: false,
|
||
is_disk_based: false,
|
||
is_unnecessary: false,
|
||
data: None,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl IndentSize {
|
||
/// Returns an [`IndentSize`] representing the given spaces.
|
||
pub fn spaces(len: u32) -> Self {
|
||
Self {
|
||
len,
|
||
kind: IndentKind::Space,
|
||
}
|
||
}
|
||
|
||
/// Returns an [`IndentSize`] representing a tab.
|
||
pub fn tab() -> Self {
|
||
Self {
|
||
len: 1,
|
||
kind: IndentKind::Tab,
|
||
}
|
||
}
|
||
|
||
/// An iterator over the characters represented by this [`IndentSize`].
|
||
pub fn chars(&self) -> impl Iterator<Item = char> {
|
||
iter::repeat(self.char()).take(self.len as usize)
|
||
}
|
||
|
||
/// The character representation of this [`IndentSize`].
|
||
pub fn char(&self) -> char {
|
||
match self.kind {
|
||
IndentKind::Space => ' ',
|
||
IndentKind::Tab => '\t',
|
||
}
|
||
}
|
||
|
||
/// Consumes the current [`IndentSize`] and returns a new one that has
|
||
/// been shrunk or enlarged by the given size along the given direction.
|
||
pub fn with_delta(mut self, direction: Ordering, size: IndentSize) -> Self {
|
||
match direction {
|
||
Ordering::Less => {
|
||
if self.kind == size.kind && self.len >= size.len {
|
||
self.len -= size.len;
|
||
}
|
||
}
|
||
Ordering::Equal => {}
|
||
Ordering::Greater => {
|
||
if self.len == 0 {
|
||
self = size;
|
||
} else if self.kind == size.kind {
|
||
self.len += size.len;
|
||
}
|
||
}
|
||
}
|
||
self
|
||
}
|
||
}
|
||
|
||
#[cfg(any(test, feature = "test-support"))]
|
||
pub struct TestFile {
|
||
pub path: Arc<Path>,
|
||
pub root_name: String,
|
||
}
|
||
|
||
#[cfg(any(test, feature = "test-support"))]
|
||
impl File for TestFile {
|
||
fn path(&self) -> &Arc<Path> {
|
||
&self.path
|
||
}
|
||
|
||
fn full_path(&self, _: &gpui::AppContext) -> PathBuf {
|
||
PathBuf::from(&self.root_name).join(self.path.as_ref())
|
||
}
|
||
|
||
fn as_local(&self) -> Option<&dyn LocalFile> {
|
||
None
|
||
}
|
||
|
||
fn mtime(&self) -> Option<SystemTime> {
|
||
unimplemented!()
|
||
}
|
||
|
||
fn file_name<'a>(&'a self, _: &'a gpui::AppContext) -> &'a std::ffi::OsStr {
|
||
self.path().file_name().unwrap_or(self.root_name.as_ref())
|
||
}
|
||
|
||
fn worktree_id(&self, _: &AppContext) -> WorktreeId {
|
||
WorktreeId::from_usize(0)
|
||
}
|
||
|
||
fn is_deleted(&self) -> bool {
|
||
unimplemented!()
|
||
}
|
||
|
||
fn as_any(&self) -> &dyn std::any::Any {
|
||
unimplemented!()
|
||
}
|
||
|
||
fn to_proto(&self, _: &AppContext) -> rpc::proto::File {
|
||
unimplemented!()
|
||
}
|
||
|
||
fn is_private(&self) -> bool {
|
||
false
|
||
}
|
||
}
|
||
|
||
pub(crate) fn contiguous_ranges(
|
||
values: impl Iterator<Item = u32>,
|
||
max_len: usize,
|
||
) -> impl Iterator<Item = Range<u32>> {
|
||
let mut values = values;
|
||
let mut current_range: Option<Range<u32>> = None;
|
||
std::iter::from_fn(move || loop {
|
||
if let Some(value) = values.next() {
|
||
if let Some(range) = &mut current_range {
|
||
if value == range.end && range.len() < max_len {
|
||
range.end += 1;
|
||
continue;
|
||
}
|
||
}
|
||
|
||
let prev_range = current_range.clone();
|
||
current_range = Some(value..(value + 1));
|
||
if prev_range.is_some() {
|
||
return prev_range;
|
||
}
|
||
} else {
|
||
return current_range.take();
|
||
}
|
||
})
|
||
}
|
||
|
||
#[derive(Default, Debug)]
|
||
pub struct CharClassifier {
|
||
scope: Option<LanguageScope>,
|
||
for_completion: bool,
|
||
ignore_punctuation: bool,
|
||
}
|
||
|
||
impl CharClassifier {
|
||
pub fn new(scope: Option<LanguageScope>) -> Self {
|
||
Self {
|
||
scope,
|
||
for_completion: false,
|
||
ignore_punctuation: false,
|
||
}
|
||
}
|
||
|
||
pub fn for_completion(self, for_completion: bool) -> Self {
|
||
Self {
|
||
for_completion,
|
||
..self
|
||
}
|
||
}
|
||
|
||
pub fn ignore_punctuation(self, ignore_punctuation: bool) -> Self {
|
||
Self {
|
||
ignore_punctuation,
|
||
..self
|
||
}
|
||
}
|
||
|
||
pub fn is_whitespace(&self, c: char) -> bool {
|
||
self.kind(c) == CharKind::Whitespace
|
||
}
|
||
|
||
pub fn is_word(&self, c: char) -> bool {
|
||
self.kind(c) == CharKind::Word
|
||
}
|
||
|
||
pub fn is_punctuation(&self, c: char) -> bool {
|
||
self.kind(c) == CharKind::Punctuation
|
||
}
|
||
|
||
pub fn kind(&self, c: char) -> CharKind {
|
||
if c.is_whitespace() {
|
||
return CharKind::Whitespace;
|
||
} else if c.is_alphanumeric() || c == '_' {
|
||
return CharKind::Word;
|
||
}
|
||
|
||
if let Some(scope) = &self.scope {
|
||
if let Some(characters) = scope.word_characters() {
|
||
if characters.contains(&c) {
|
||
if c == '-' && !self.for_completion && !self.ignore_punctuation {
|
||
return CharKind::Punctuation;
|
||
}
|
||
return CharKind::Word;
|
||
}
|
||
}
|
||
}
|
||
|
||
if self.ignore_punctuation {
|
||
CharKind::Word
|
||
} else {
|
||
CharKind::Punctuation
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Find all of the ranges of whitespace that occur at the ends of lines
|
||
/// in the given rope.
|
||
///
|
||
/// This could also be done with a regex search, but this implementation
|
||
/// avoids copying text.
|
||
pub fn trailing_whitespace_ranges(rope: &Rope) -> Vec<Range<usize>> {
|
||
let mut ranges = Vec::new();
|
||
|
||
let mut offset = 0;
|
||
let mut prev_chunk_trailing_whitespace_range = 0..0;
|
||
for chunk in rope.chunks() {
|
||
let mut prev_line_trailing_whitespace_range = 0..0;
|
||
for (i, line) in chunk.split('\n').enumerate() {
|
||
let line_end_offset = offset + line.len();
|
||
let trimmed_line_len = line.trim_end_matches([' ', '\t']).len();
|
||
let mut trailing_whitespace_range = (offset + trimmed_line_len)..line_end_offset;
|
||
|
||
if i == 0 && trimmed_line_len == 0 {
|
||
trailing_whitespace_range.start = prev_chunk_trailing_whitespace_range.start;
|
||
}
|
||
if !prev_line_trailing_whitespace_range.is_empty() {
|
||
ranges.push(prev_line_trailing_whitespace_range);
|
||
}
|
||
|
||
offset = line_end_offset + 1;
|
||
prev_line_trailing_whitespace_range = trailing_whitespace_range;
|
||
}
|
||
|
||
offset -= 1;
|
||
prev_chunk_trailing_whitespace_range = prev_line_trailing_whitespace_range;
|
||
}
|
||
|
||
if !prev_chunk_trailing_whitespace_range.is_empty() {
|
||
ranges.push(prev_chunk_trailing_whitespace_range);
|
||
}
|
||
|
||
ranges
|
||
}
|