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Remove duplication when assigning diagnostics and hardcode provider names

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This commit is contained in:
Antonio Scandurra 2021-12-24 12:07:26 +01:00
parent 4f774e2bde
commit 11e3874b4a
8 changed files with 198 additions and 178 deletions
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24
crates/diagnostics/src/diagnostics.rs
View File

@ -579,7 +579,7 @@ mod tests {
use super::*;
use client::{http::ServerResponse, test::FakeHttpClient, Client, UserStore};
use gpui::TestAppContext;
use language::{Diagnostic, DiagnosticEntry, DiagnosticSeverity, LanguageRegistry, PointUtf16};
use language::{Diagnostic, DiagnosticEntry, DiagnosticSeverity, LanguageRegistry};
use project::FakeFs;
use serde_json::json;
use std::sync::Arc;
@ -637,13 +637,11 @@ mod tests {
worktree.update(&mut cx, |worktree, cx| {
worktree
.update_point_utf16_diagnostics(
"lsp".into(),
.update_diagnostics_from_provider(
Arc::from("/test/main.rs".as_ref()),
None,
vec![
DiagnosticEntry {
range: PointUtf16::new(1, 8)..PointUtf16::new(1, 9),
range: 20..21,
diagnostic: Diagnostic {
message:
"move occurs because `x` has type `Vec<char>`, which does not implement the `Copy` trait"
@ -655,7 +653,7 @@ mod tests {
},
},
DiagnosticEntry {
range: PointUtf16::new(2, 8)..PointUtf16::new(2, 9),
range: 40..41,
diagnostic: Diagnostic {
message:
"move occurs because `y` has type `Vec<char>`, which does not implement the `Copy` trait"
@ -667,7 +665,7 @@ mod tests {
},
},
DiagnosticEntry {
range: PointUtf16::new(3, 6)..PointUtf16::new(3, 7),
range: 58..59,
diagnostic: Diagnostic {
message: "value moved here".to_string(),
severity: DiagnosticSeverity::INFORMATION,
@ -677,7 +675,7 @@ mod tests {
},
},
DiagnosticEntry {
range: PointUtf16::new(4, 6)..PointUtf16::new(4, 7),
range: 68..69,
diagnostic: Diagnostic {
message: "value moved here".to_string(),
severity: DiagnosticSeverity::INFORMATION,
@ -687,7 +685,7 @@ mod tests {
},
},
DiagnosticEntry {
range: PointUtf16::new(7, 6)..PointUtf16::new(7, 7),
range: 112..113,
diagnostic: Diagnostic {
message: "use of moved value\nvalue used here after move".to_string(),
severity: DiagnosticSeverity::ERROR,
@ -697,7 +695,7 @@ mod tests {
},
},
DiagnosticEntry {
range: PointUtf16::new(8, 6)..PointUtf16::new(8, 7),
range: 122..123,
diagnostic: Diagnostic {
message: "use of moved value\nvalue used here after move".to_string(),
severity: DiagnosticSeverity::ERROR,
@ -764,12 +762,10 @@ mod tests {
worktree.update(&mut cx, |worktree, cx| {
worktree
.update_point_utf16_diagnostics(
"lsp".into(),
.update_diagnostics_from_provider(
Arc::from("/test/a.rs".as_ref()),
None,
vec![DiagnosticEntry {
range: PointUtf16::new(0, 15)..PointUtf16::new(0, 15),
range: 15..15,
diagnostic: Diagnostic {
message: "mismatched types\nexpected `usize`, found `char`".to_string(),
severity: DiagnosticSeverity::ERROR,

72
crates/language/src/buffer.rs
View File

@ -23,7 +23,7 @@ use std::{
ffi::OsString,
future::Future,
iter::{Iterator, Peekable},
ops::{Deref, DerefMut, Range},
ops::{Add, Deref, DerefMut, Range, Sub},
path::{Path, PathBuf},
str,
sync::Arc,
@ -31,7 +31,7 @@ use std::{
vec,
};
use sum_tree::TreeMap;
use text::operation_queue::OperationQueue;
use text::{operation_queue::OperationQueue, rope::TextDimension};
pub use text::{Buffer as TextBuffer, Operation as _, *};
use theme::SyntaxTheme;
use tree_sitter::{InputEdit, Parser, QueryCursor, Tree};
@ -85,6 +85,12 @@ pub struct BufferSnapshot {
parse_count: usize,
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct GroupId {
source: Arc<str>,
id: usize,
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Diagnostic {
pub code: Option<String>,
@ -740,13 +746,16 @@ impl Buffer {
self.diagnostic_sets.iter().flat_map(|set| set.iter())
}
pub fn update_diagnostics(
pub fn update_diagnostics<T>(
&mut self,
provider_name: Arc<str>,
version: Option<i32>,
mut diagnostics: Vec<DiagnosticEntry<PointUtf16>>,
mut diagnostics: Vec<DiagnosticEntry<T>>,
cx: &mut ModelContext<Self>,
) -> Result<Operation> {
) -> Result<Operation>
where
T: ToPoint + Ord + Clip + TextDimension + Add<Output = T> + Sub<Output = T> + Copy,
{
fn compare_diagnostics(a: &Diagnostic, b: &Diagnostic) -> Ordering {
Ordering::Equal
.then_with(|| b.is_primary.cmp(&a.is_primary))
@ -755,13 +764,6 @@ impl Buffer {
.then_with(|| a.message.cmp(&b.message))
}
diagnostics.sort_unstable_by(|a, b| {
Ordering::Equal
.then_with(|| a.range.start.cmp(&b.range.start))
.then_with(|| b.range.end.cmp(&a.range.end))
.then_with(|| compare_diagnostics(&a.diagnostic, &b.diagnostic))
});
let version = version.map(|version| version as usize);
let content = if let Some(version) = version {
let language_server = self.language_server.as_mut().unwrap();
@ -777,14 +779,18 @@ impl Buffer {
self.deref()
};
let mut edits_since_save = content
.edits_since::<PointUtf16>(&self.saved_version)
.peekable();
let mut last_edit_old_end = PointUtf16::zero();
let mut last_edit_new_end = PointUtf16::zero();
let mut ix = 0;
'outer: while ix < diagnostics.len() {
let entry = &mut diagnostics[ix];
diagnostics.sort_unstable_by(|a, b| {
Ordering::Equal
.then_with(|| a.range.start.cmp(&b.range.start))
.then_with(|| b.range.end.cmp(&a.range.end))
.then_with(|| compare_diagnostics(&a.diagnostic, &b.diagnostic))
});
let mut sanitized_diagnostics = Vec::new();
let mut edits_since_save = content.edits_since::<T>(&self.saved_version).peekable();
let mut last_edit_old_end = T::default();
let mut last_edit_new_end = T::default();
'outer: for entry in diagnostics {
let mut start = entry.range.start;
let mut end = entry.range.end;
@ -798,7 +804,6 @@ impl Buffer {
last_edit_new_end = edit.new.end;
edits_since_save.next();
} else if edit.old.start <= end && edit.old.end >= start {
diagnostics.remove(ix);
continue 'outer;
} else {
break;
@ -809,23 +814,26 @@ impl Buffer {
end = last_edit_new_end + (end - last_edit_old_end);
}
entry.range = content.clip_point_utf16(start, Bias::Left)
..content.clip_point_utf16(end, Bias::Right);
let range = start.clip(Bias::Left, content)..end.clip(Bias::Right, content);
let mut range = range.start.to_point(content)..range.end.to_point(content);
// Expand empty ranges by one character
if entry.range.start == entry.range.end {
entry.range.end.column += 1;
entry.range.end = content.clip_point_utf16(entry.range.end, Bias::Right);
if entry.range.start == entry.range.end && entry.range.end.column > 0 {
entry.range.start.column -= 1;
entry.range.start = content.clip_point_utf16(entry.range.start, Bias::Left);
if range.start == range.end {
range.end.column += 1;
range.end = content.clip_point(range.end, Bias::Right);
if range.start == range.end && range.end.column > 0 {
range.start.column -= 1;
range.start = content.clip_point(range.start, Bias::Left);
}
}
ix += 1;
sanitized_diagnostics.push(DiagnosticEntry {
range,
diagnostic: entry.diagnostic,
});
}
drop(edits_since_save);
let set = DiagnosticSet::new(provider_name, diagnostics, content);
let set = DiagnosticSet::new(provider_name, sanitized_diagnostics, content);
self.apply_diagnostic_update(set.clone(), cx);
Ok(Operation::UpdateDiagnostics {
provider_name: set.provider_name().to_string(),

4
crates/language/src/diagnostic_set.rs
View File

@ -7,7 +7,7 @@ use std::{
sync::Arc,
};
use sum_tree::{self, Bias, SumTree};
use text::{Anchor, FromAnchor, PointUtf16, ToOffset};
use text::{Anchor, FromAnchor, Point, ToOffset};
#[derive(Clone, Debug)]
pub struct DiagnosticSet {
@ -56,7 +56,7 @@ impl DiagnosticSet {
pub fn new<I>(provider_name: Arc<str>, iter: I, buffer: &text::BufferSnapshot) -> Self
where
I: IntoIterator<Item = DiagnosticEntry<PointUtf16>>,
I: IntoIterator<Item = DiagnosticEntry<Point>>,
{
let mut entries = iter.into_iter().collect::<Vec<_>>();
entries.sort_unstable_by_key(|entry| (entry.range.start, Reverse(entry.range.end)));

16
crates/language/src/language.rs
View File

@ -65,9 +65,7 @@ pub struct BracketPair {
}
#[async_trait]
pub trait DiagnosticSource: 'static + Send + Sync {
fn name(&self) -> Arc<str>;
pub trait DiagnosticProvider: 'static + Send + Sync {
async fn diagnose(
&self,
path: Arc<Path>,
@ -77,7 +75,7 @@ pub trait DiagnosticSource: 'static + Send + Sync {
pub struct Language {
pub(crate) config: LanguageConfig,
pub(crate) grammar: Option<Arc<Grammar>>,
pub(crate) diagnostic_source: Option<Arc<dyn DiagnosticSource>>,
pub(crate) diagnostic_provider: Option<Arc<dyn DiagnosticProvider>>,
}
pub struct Grammar {
@ -142,7 +140,7 @@ impl Language {
highlight_map: Default::default(),
})
}),
diagnostic_source: None,
diagnostic_provider: None,
}
}
@ -176,8 +174,8 @@ impl Language {
Ok(self)
}
pub fn with_diagnostic_source(mut self, source: impl DiagnosticSource) -> Self {
self.diagnostic_source = Some(Arc::new(source));
pub fn with_diagnostic_provider(mut self, source: impl DiagnosticProvider) -> Self {
self.diagnostic_provider = Some(Arc::new(source));
self
}
@ -214,8 +212,8 @@ impl Language {
}
}
pub fn diagnostic_source(&self) -> Option<&Arc<dyn DiagnosticSource>> {
self.diagnostic_source.as_ref()
pub fn diagnostic_provider(&self) -> Option<&Arc<dyn DiagnosticProvider>> {
self.diagnostic_provider.as_ref()
}
pub fn disk_based_diagnostic_sources(&self) -> Option<&HashSet<String>> {

8
crates/project/src/project.rs
View File

@ -507,18 +507,16 @@ impl Project {
for worktree_handle in &self.worktrees {
if let Some(worktree) = worktree_handle.read(cx).as_local() {
for language in worktree.languages() {
if let Some(diagnostic_source) = language.diagnostic_source().cloned() {
if let Some(provider) = language.diagnostic_provider().cloned() {
let worktree_path = worktree.abs_path().clone();
let worktree_handle = worktree_handle.downgrade();
cx.spawn_weak(|_, mut cx| async move {
let diagnostics =
diagnostic_source.diagnose(worktree_path).await.log_err()?;
let diagnostics = provider.diagnose(worktree_path).await.log_err()?;
let worktree_handle = worktree_handle.upgrade(&cx)?;
worktree_handle.update(&mut cx, |worktree, cx| {
for (path, diagnostics) in diagnostics {
worktree
.update_offset_diagnostics(
diagnostic_source.name(),
.update_diagnostics_from_provider(
path.into(),
diagnostics,
cx,

185
crates/project/src/worktree.rs
View File

@ -50,6 +50,8 @@ use util::{post_inc, ResultExt, TryFutureExt};
lazy_static! {
static ref GITIGNORE: &'static OsStr = OsStr::new(".gitignore");
static ref DIAGNOSTIC_PROVIDER_NAME: Arc<str> = Arc::from("diagnostic_source");
static ref LSP_PROVIDER_NAME: Arc<str> = Arc::from("lsp");
}
#[derive(Clone, Debug)]
@ -672,9 +674,8 @@ impl Worktree {
}
}
pub fn update_lsp_diagnostics(
pub fn update_diagnostics_from_lsp(
&mut self,
provider_name: Arc<str>,
mut params: lsp::PublishDiagnosticsParams,
disk_based_sources: &HashSet<String>,
cx: &mut ModelContext<Worktree>,
@ -743,18 +744,42 @@ impl Worktree {
})
.collect::<Vec<_>>();
self.update_point_utf16_diagnostics(
provider_name,
worktree_path,
params.version,
diagnostics,
cx,
)
let this = self.as_local_mut().unwrap();
for buffer in this.open_buffers.values() {
if let Some(buffer) = buffer.upgrade(cx) {
if buffer
.read(cx)
.file()
.map_or(false, |file| *file.path() == worktree_path)
{
let (remote_id, operation) = buffer.update(cx, |buffer, cx| {
(
buffer.remote_id(),
buffer.update_diagnostics(
LSP_PROVIDER_NAME.clone(),
params.version,
diagnostics.clone(),
cx,
),
)
});
self.send_buffer_update(remote_id, operation?, cx);
break;
}
}
}
let this = self.as_local_mut().unwrap();
this.diagnostic_summaries
.insert(worktree_path.clone(), DiagnosticSummary::new(&diagnostics));
this.lsp_diagnostics
.insert(worktree_path.clone(), diagnostics);
cx.emit(Event::DiagnosticsUpdated(worktree_path.clone()));
Ok(())
}
pub fn update_offset_diagnostics(
pub fn update_diagnostics_from_provider(
&mut self,
provider_name: Arc<str>,
path: Arc<Path>,
diagnostics: Vec<DiagnosticEntry<usize>>,
cx: &mut ModelContext<Worktree>,
@ -771,56 +796,8 @@ impl Worktree {
(
buffer.remote_id(),
buffer.update_diagnostics(
provider_name,
DIAGNOSTIC_PROVIDER_NAME.clone(),
None,
diagnostics
.iter()
.map(|entry| DiagnosticEntry {
range: buffer.offset_to_point_utf16(entry.range.start)
..buffer.offset_to_point_utf16(entry.range.end),
diagnostic: entry.diagnostic.clone(),
})
.collect(),
cx,
),
)
});
self.send_buffer_update(remote_id, operation?, cx);
break;
}
}
}
let this = self.as_local_mut().unwrap();
this.diagnostic_summaries
.insert(path.clone(), DiagnosticSummary::new(&diagnostics));
this.offset_diagnostics.insert(path.clone(), diagnostics);
cx.emit(Event::DiagnosticsUpdated(path.clone()));
Ok(())
}
pub fn update_point_utf16_diagnostics(
&mut self,
provider_name: Arc<str>,
path: Arc<Path>,
version: Option<i32>,
diagnostics: Vec<DiagnosticEntry<PointUtf16>>,
cx: &mut ModelContext<Worktree>,
) -> Result<()> {
let this = self.as_local_mut().unwrap();
for buffer in this.open_buffers.values() {
if let Some(buffer) = buffer.upgrade(cx) {
if buffer
.read(cx)
.file()
.map_or(false, |file| *file.path() == path)
{
let (remote_id, operation) = buffer.update(cx, |buffer, cx| {
(
buffer.remote_id(),
buffer.update_diagnostics(
provider_name,
version,
diagnostics.clone(),
cx,
),
@ -835,26 +812,11 @@ impl Worktree {
let this = self.as_local_mut().unwrap();
this.diagnostic_summaries
.insert(path.clone(), DiagnosticSummary::new(&diagnostics));
this.point_utf16_diagnostics
.insert(path.clone(), diagnostics);
this.provider_diagnostics.insert(path.clone(), diagnostics);
cx.emit(Event::DiagnosticsUpdated(path.clone()));
Ok(())
}
fn convert_diagnostics(
diagnostics: &[DiagnosticEntry<usize>],
buffer: &Buffer,
) -> Vec<DiagnosticEntry<PointUtf16>> {
diagnostics
.iter()
.map(|entry| DiagnosticEntry {
range: buffer.offset_to_point_utf16(entry.range.start)
..buffer.offset_to_point_utf16(entry.range.end),
diagnostic: entry.diagnostic.clone(),
})
.collect()
}
fn send_buffer_update(
&mut self,
buffer_id: u64,
@ -925,8 +887,8 @@ pub struct LocalWorktree {
loading_buffers: LoadingBuffers,
open_buffers: HashMap<usize, WeakModelHandle<Buffer>>,
shared_buffers: HashMap<PeerId, HashMap<u64, ModelHandle<Buffer>>>,
point_utf16_diagnostics: HashMap<Arc<Path>, Vec<DiagnosticEntry<PointUtf16>>>,
offset_diagnostics: HashMap<Arc<Path>, Vec<DiagnosticEntry<usize>>>,
lsp_diagnostics: HashMap<Arc<Path>, Vec<DiagnosticEntry<PointUtf16>>>,
provider_diagnostics: HashMap<Arc<Path>, Vec<DiagnosticEntry<usize>>>,
diagnostic_summaries: BTreeMap<Arc<Path>, DiagnosticSummary>,
queued_operations: Vec<(u64, Operation)>,
language_registry: Arc<LanguageRegistry>,
@ -1034,8 +996,8 @@ impl LocalWorktree {
loading_buffers: Default::default(),
open_buffers: Default::default(),
shared_buffers: Default::default(),
point_utf16_diagnostics: Default::default(),
offset_diagnostics: Default::default(),
lsp_diagnostics: Default::default(),
provider_diagnostics: Default::default(),
diagnostic_summaries: Default::default(),
queued_operations: Default::default(),
language_registry: languages,
@ -1104,8 +1066,6 @@ impl LocalWorktree {
return Some(server.clone());
}
let name: Arc<str> = language.name().into();
if let Some(language_server) = language
.start_server(self.abs_path(), cx)
.log_err()
@ -1121,23 +1081,15 @@ impl LocalWorktree {
smol::block_on(diagnostics_tx.send(params)).ok();
})
.detach();
cx.spawn_weak(|this, mut cx| {
let provider_name = name.clone();
async move {
while let Ok(diagnostics) = diagnostics_rx.recv().await {
if let Some(handle) = cx.read(|cx| this.upgrade(cx)) {
handle.update(&mut cx, |this, cx| {
this.update_lsp_diagnostics(
provider_name.clone(),
diagnostics,
&disk_based_sources,
cx,
)
cx.spawn_weak(|this, mut cx| async move {
while let Ok(diagnostics) = diagnostics_rx.recv().await {
if let Some(handle) = cx.read(|cx| this.upgrade(cx)) {
handle.update(&mut cx, |this, cx| {
this.update_diagnostics_from_lsp(diagnostics, &disk_based_sources, cx)
.log_err();
});
} else {
break;
}
});
} else {
break;
}
}
})
@ -1184,11 +1136,11 @@ impl LocalWorktree {
.update(&mut cx, |t, cx| t.as_local().unwrap().load(&path, cx))
.await?;
let (point_utf16_diagnostics, offset_diagnostics, language, language_server) = this
.update(&mut cx, |this, cx| {
let (lsp_diagnostics, provider_diagnostics, language, language_server) =
this.update(&mut cx, |this, cx| {
let this = this.as_local_mut().unwrap();
let point_utf16_diagnostics = this.point_utf16_diagnostics.remove(&path);
let offset_diagnostics = this.offset_diagnostics.remove(&path);
let lsp_diagnostics = this.lsp_diagnostics.remove(&path);
let provider_diagnostics = this.provider_diagnostics.remove(&path);
let language = this
.language_registry
.select_language(file.full_path())
@ -1196,31 +1148,32 @@ impl LocalWorktree {
let server = language
.as_ref()
.and_then(|language| this.register_language(language, cx));
(
point_utf16_diagnostics,
offset_diagnostics,
language,
server,
)
(lsp_diagnostics, provider_diagnostics, language, server)
});
let mut buffer_operations = Vec::new();
let buffer = cx.add_model(|cx| {
let mut buffer = Buffer::from_file(0, contents, Box::new(file), cx);
buffer.set_language(language, language_server, cx);
if let Some(diagnostics) = point_utf16_diagnostics {
buffer
.update_diagnostics(todo!(), None, diagnostics, cx)
if let Some(diagnostics) = lsp_diagnostics {
let op = buffer
.update_diagnostics(LSP_PROVIDER_NAME.clone(), None, diagnostics, cx)
.unwrap();
buffer_operations.push(op);
}
if let Some(diagnostics) = offset_diagnostics {
buffer
.update_offset_diagnostics(todo!(), None, diagnostics, cx)
if let Some(diagnostics) = provider_diagnostics {
let op = buffer
.update_diagnostics(DIAGNOSTIC_PROVIDER_NAME.clone(), None, diagnostics, cx)
.unwrap();
buffer_operations.push(op);
}
buffer
});
this.update(&mut cx, |this, _| {
this.update(&mut cx, |this, cx| {
for op in buffer_operations {
this.send_buffer_update(buffer.read(cx).remote_id(), op, cx);
}
let this = this.as_local_mut().unwrap();
this.open_buffers.insert(buffer.id(), buffer.downgrade());
});
@ -3936,7 +3889,7 @@ mod tests {
worktree
.update(&mut cx, |tree, cx| {
tree.update_lsp_diagnostics("lsp".into(), message, &Default::default(), cx)
tree.update_diagnostics_from_lsp(message, &Default::default(), cx)
})
.unwrap();
let buffer = buffer.read_with(&cx, |buffer, _| buffer.snapshot());

35
crates/text/src/rope.rs
View File

@ -205,6 +205,19 @@ impl Rope {
.map_or(0, |chunk| chunk.point_utf16_to_offset(overshoot))
}
pub fn point_utf16_to_point(&self, point: PointUtf16) -> Point {
if point >= self.summary().lines_utf16 {
return self.summary().lines;
}
let mut cursor = self.chunks.cursor::<(PointUtf16, Point)>();
cursor.seek(&point, Bias::Left, &());
let overshoot = point - cursor.start().0;
cursor.start().1
+ cursor
.item()
.map_or(Point::zero(), |chunk| chunk.point_utf16_to_point(overshoot))
}
pub fn clip_offset(&self, mut offset: usize, bias: Bias) -> usize {
let mut cursor = self.chunks.cursor::<usize>();
cursor.seek(&offset, Bias::Left, &());
@ -583,6 +596,28 @@ impl Chunk {
offset
}
fn point_utf16_to_point(&self, target: PointUtf16) -> Point {
let mut point = Point::zero();
let mut point_utf16 = PointUtf16::zero();
for ch in self.0.chars() {
if point_utf16 >= target {
if point_utf16 > target {
panic!("point {:?} is inside of character {:?}", target, ch);
}
break;
}
if ch == '\n' {
point_utf16 += PointUtf16::new(1, 0);
point += Point::new(1, 0);
} else {
point_utf16 += PointUtf16::new(0, ch.len_utf16() as u32);
point += Point::new(0, ch.len_utf8() as u32);
}
}
point
}
fn clip_point(&self, target: Point, bias: Bias) -> Point {
for (row, line) in self.0.split('\n').enumerate() {
if row == target.row as usize {

32
crates/text/src/text.rs
View File

@ -1307,6 +1307,10 @@ impl BufferSnapshot {
self.visible_text.point_utf16_to_offset(point)
}
pub fn point_utf16_to_point(&self, point: PointUtf16) -> Point {
self.visible_text.point_utf16_to_point(point)
}
pub fn offset_to_point(&self, offset: usize) -> Point {
self.visible_text.offset_to_point(offset)
}
@ -2045,12 +2049,40 @@ impl ToPoint for usize {
}
}
impl ToPoint for PointUtf16 {
fn to_point<'a>(&self, snapshot: &BufferSnapshot) -> Point {
snapshot.point_utf16_to_point(*self)
}
}
impl ToPoint for Point {
fn to_point<'a>(&self, _: &BufferSnapshot) -> Point {
*self
}
}
pub trait Clip {
fn clip(&self, bias: Bias, snapshot: &BufferSnapshot) -> Self;
}
impl Clip for usize {
fn clip(&self, bias: Bias, snapshot: &BufferSnapshot) -> Self {
snapshot.clip_offset(*self, bias)
}
}
impl Clip for Point {
fn clip(&self, bias: Bias, snapshot: &BufferSnapshot) -> Self {
snapshot.clip_point(*self, bias)
}
}
impl Clip for PointUtf16 {
fn clip(&self, bias: Bias, snapshot: &BufferSnapshot) -> Self {
snapshot.clip_point_utf16(*self, bias)
}
}
pub trait FromAnchor {
fn from_anchor(anchor: &Anchor, snapshot: &BufferSnapshot) -> Self;
}