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Merge pull request #11486 from helix-editor/lsp-location-refactor

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Replace uses of `lsp::Location` with a custom Location type
This commit is contained in:
Pascal Kuthe 2024-10-04 03:33:35 +02:00 committed by GitHub
commit 162028d444
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4 changed files with 121 additions and 155 deletions
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41
helix-core/src/uri.rs
View File

@ -1,12 +1,18 @@
use std::path::{Path, PathBuf};
use std::{
fmt,
path::{Path, PathBuf},
sync::Arc,
};
/// A generic pointer to a file location.
///
/// Currently this type only supports paths to local files.
///
/// Cloning this type is cheap: the internal representation uses an Arc.
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
#[non_exhaustive]
pub enum Uri {
File(PathBuf),
File(Arc<Path>),
}
impl Uri {
@ -23,26 +29,18 @@ pub fn as_path(&self) -> Option<&Path> {
Self::File(path) => Some(path),
}
}
pub fn as_path_buf(self) -> Option<PathBuf> {
match self {
Self::File(path) => Some(path),
}
}
}
impl From<PathBuf> for Uri {
fn from(path: PathBuf) -> Self {
Self::File(path)
Self::File(path.into())
}
}
impl TryFrom<Uri> for PathBuf {
type Error = ();
fn try_from(uri: Uri) -> Result<Self, Self::Error> {
match uri {
Uri::File(path) => Ok(path),
impl fmt::Display for Uri {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::File(path) => write!(f, "{}", path.display()),
}
}
}
@ -59,11 +57,16 @@ pub enum UrlConversionErrorKind {
UnableToConvert,
}
impl std::fmt::Display for UrlConversionError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
impl fmt::Display for UrlConversionError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self.kind {
UrlConversionErrorKind::UnsupportedScheme => {
write!(f, "unsupported scheme in URL: {}", self.source.scheme())
write!(
f,
"unsupported scheme '{}' in URL {}",
self.source.scheme(),
self.source
)
}
UrlConversionErrorKind::UnableToConvert => {
write!(f, "unable to convert URL to file path: {}", self.source)
@ -77,7 +80,7 @@ impl std::error::Error for UrlConversionError {}
fn convert_url_to_uri(url: &url::Url) -> Result<Uri, UrlConversionErrorKind> {
if url.scheme() == "file" {
url.to_file_path()
.map(|path| Uri::File(helix_stdx::path::normalize(path)))
.map(|path| Uri::File(helix_stdx::path::normalize(path).into()))
.map_err(|_| UrlConversionErrorKind::UnableToConvert)
} else {
Err(UrlConversionErrorKind::UnsupportedScheme)

196
helix-term/src/commands/lsp.rs
View File

@ -34,7 +34,7 @@
use std::{
cmp::Ordering,
collections::{BTreeMap, HashSet},
fmt::{Display, Write},
fmt::Display,
future::Future,
path::Path,
};
@ -61,10 +61,31 @@ macro_rules! language_server_with_feature {
}};
}
/// A wrapper around `lsp::Location` that swaps out the LSP URI for `helix_core::Uri`.
#[derive(Debug, Clone, PartialEq, Eq)]
struct Location {
uri: Uri,
range: lsp::Range,
}
fn lsp_location_to_location(location: lsp::Location) -> Option<Location> {
let uri = match location.uri.try_into() {
Ok(uri) => uri,
Err(err) => {
log::warn!("discarding invalid or unsupported URI: {err}");
return None;
}
};
Some(Location {
uri,
range: location.range,
})
}
struct SymbolInformationItem {
location: Location,
symbol: lsp::SymbolInformation,
offset_encoding: OffsetEncoding,
uri: Uri,
}
struct DiagnosticStyles {
@ -75,35 +96,35 @@ struct DiagnosticStyles {
}
struct PickerDiagnostic {
uri: Uri,
location: Location,
diag: lsp::Diagnostic,
offset_encoding: OffsetEncoding,
}
fn uri_to_file_location<'a>(uri: &'a Uri, range: &lsp::Range) -> Option<FileLocation<'a>> {
let path = uri.as_path()?;
let line = Some((range.start.line as usize, range.end.line as usize));
fn location_to_file_location(location: &Location) -> Option<FileLocation> {
let path = location.uri.as_path()?;
let line = Some((
location.range.start.line as usize,
location.range.end.line as usize,
));
Some((path.into(), line))
}
fn jump_to_location(
editor: &mut Editor,
location: &lsp::Location,
location: &Location,
offset_encoding: OffsetEncoding,
action: Action,
) {
let (view, doc) = current!(editor);
push_jump(view, doc);
let path = match location.uri.to_file_path() {
Ok(path) => path,
Err(_) => {
let err = format!("unable to convert URI to filepath: {}", location.uri);
editor.set_error(err);
return;
}
let Some(path) = location.uri.as_path() else {
let err = format!("unable to convert URI to filepath: {:?}", location.uri);
editor.set_error(err);
return;
};
jump_to_position(editor, &path, location.range, offset_encoding, action);
jump_to_position(editor, path, location.range, offset_encoding, action);
}
fn jump_to_position(
@ -196,7 +217,10 @@ fn diag_picker(
for (diag, ls) in diags {
if let Some(ls) = cx.editor.language_server_by_id(ls) {
flat_diag.push(PickerDiagnostic {
uri: uri.clone(),
location: Location {
uri: uri.clone(),
range: diag.range,
},
diag,
offset_encoding: ls.offset_encoding(),
});
@ -243,7 +267,7 @@ fn diag_picker(
// between message code and message
2,
ui::PickerColumn::new("path", |item: &PickerDiagnostic, _| {
if let Some(path) = item.uri.as_path() {
if let Some(path) = item.location.uri.as_path() {
path::get_truncated_path(path)
.to_string_lossy()
.to_string()
@ -261,26 +285,14 @@ fn diag_picker(
primary_column,
flat_diag,
styles,
move |cx,
PickerDiagnostic {
uri,
diag,
offset_encoding,
},
action| {
let Some(path) = uri.as_path() else {
return;
};
jump_to_position(cx.editor, path, diag.range, *offset_encoding, action);
move |cx, diag, action| {
jump_to_location(cx.editor, &diag.location, diag.offset_encoding, action);
let (view, doc) = current!(cx.editor);
view.diagnostics_handler
.immediately_show_diagnostic(doc, view.id);
},
)
.with_preview(move |_editor, PickerDiagnostic { uri, diag, .. }| {
let line = Some((diag.range.start.line as usize, diag.range.end.line as usize));
Some((uri.as_path()?.into(), line))
})
.with_preview(move |_editor, diag| location_to_file_location(&diag.location))
.truncate_start(false)
}
@ -303,7 +315,10 @@ fn nested_to_flat(
container_name: None,
},
offset_encoding,
uri: uri.clone(),
location: Location {
uri: uri.clone(),
range: symbol.selection_range,
},
});
for child in symbol.children.into_iter().flatten() {
nested_to_flat(list, file, uri, child, offset_encoding);
@ -337,7 +352,10 @@ fn nested_to_flat(
lsp::DocumentSymbolResponse::Flat(symbols) => symbols
.into_iter()
.map(|symbol| SymbolInformationItem {
uri: doc_uri.clone(),
location: Location {
uri: doc_uri.clone(),
range: symbol.location.range,
},
symbol,
offset_encoding,
})
@ -392,17 +410,10 @@ fn nested_to_flat(
symbols,
(),
move |cx, item, action| {
jump_to_location(
cx.editor,
&item.symbol.location,
item.offset_encoding,
action,
);
jump_to_location(cx.editor, &item.location, item.offset_encoding, action);
},
)
.with_preview(move |_editor, item| {
uri_to_file_location(&item.uri, &item.symbol.location.range)
})
.with_preview(move |_editor, item| location_to_file_location(&item.location))
.truncate_start(false);
compositor.push(Box::new(overlaid(picker)))
@ -453,8 +464,11 @@ pub fn workspace_symbol_picker(cx: &mut Context) {
}
};
Some(SymbolInformationItem {
location: Location {
uri,
range: symbol.location.range,
},
symbol,
uri,
offset_encoding,
})
})
@ -490,7 +504,7 @@ pub fn workspace_symbol_picker(cx: &mut Context) {
})
.without_filtering(),
ui::PickerColumn::new("path", |item: &SymbolInformationItem, _| {
if let Some(path) = item.uri.as_path() {
if let Some(path) = item.location.uri.as_path() {
path::get_relative_path(path)
.to_string_lossy()
.to_string()
@ -507,15 +521,10 @@ pub fn workspace_symbol_picker(cx: &mut Context) {
[],
(),
move |cx, item, action| {
jump_to_location(
cx.editor,
&item.symbol.location,
item.offset_encoding,
action,
);
jump_to_location(cx.editor, &item.location, item.offset_encoding, action);
},
)
.with_preview(|_editor, item| uri_to_file_location(&item.uri, &item.symbol.location.range))
.with_preview(|_editor, item| location_to_file_location(&item.location))
.with_dynamic_query(get_symbols, None)
.truncate_start(false);
@ -847,7 +856,7 @@ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
fn goto_impl(
editor: &mut Editor,
compositor: &mut Compositor,
locations: Vec<lsp::Location>,
locations: Vec<Location>,
offset_encoding: OffsetEncoding,
) {
let cwdir = helix_stdx::env::current_working_dir();
@ -860,80 +869,41 @@ fn goto_impl(
_locations => {
let columns = [ui::PickerColumn::new(
"location",
|item: &lsp::Location, cwdir: &std::path::PathBuf| {
// The preallocation here will overallocate a few characters since it will account for the
// URL's scheme, which is not used most of the time since that scheme will be "file://".
// Those extra chars will be used to avoid allocating when writing the line number (in the
// common case where it has 5 digits or less, which should be enough for a cast majority
// of usages).
let mut res = String::with_capacity(item.uri.as_str().len());
if item.uri.scheme() == "file" {
// With the preallocation above and UTF-8 paths already, this closure will do one (1)
// allocation, for `to_file_path`, else there will be two (2), with `to_string_lossy`.
if let Ok(path) = item.uri.to_file_path() {
// We don't convert to a `helix_core::Uri` here because we've already checked the scheme.
// This path won't be normalized but it's only used for display.
res.push_str(
&path.strip_prefix(cwdir).unwrap_or(&path).to_string_lossy(),
);
}
|item: &Location, cwdir: &std::path::PathBuf| {
let path = if let Some(path) = item.uri.as_path() {
path.strip_prefix(cwdir).unwrap_or(path).to_string_lossy()
} else {
// Never allocates since we declared the string with this capacity already.
res.push_str(item.uri.as_str());
}
item.uri.to_string().into()
};
// Most commonly, this will not allocate, especially on Unix systems where the root prefix
// is a simple `/` and not `C:\` (with whatever drive letter)
write!(&mut res, ":{}", item.range.start.line + 1)
.expect("Will only failed if allocating fail");
res.into()
format!("{path}:{}", item.range.start.line + 1).into()
},
)];
let picker = Picker::new(columns, 0, locations, cwdir, move |cx, location, action| {
jump_to_location(cx.editor, location, offset_encoding, action)
})
.with_preview(move |_editor, location| {
use crate::ui::picker::PathOrId;
let lines = Some((
location.range.start.line as usize,
location.range.end.line as usize,
));
// TODO: we should avoid allocating by doing the Uri conversion ahead of time.
//
// To do this, introduce a `Location` type in `helix-core` that reuses the core
// `Uri` type instead of the LSP `Url` type and replaces the LSP `Range` type.
// Refactor the callers of `goto_impl` to pass iterators that translate the
// LSP location type to the custom one in core, or have them collect and pass
// `Vec<Location>`s. Replace the `uri_to_file_location` function with
// `location_to_file_location` that takes only `&helix_core::Location` as
// parameters.
//
// By doing this we can also eliminate the duplicated URI info in the
// `SymbolInformationItem` type and introduce a custom Symbol type in `helix-core`
// which will be reused in the future for tree-sitter based symbol pickers.
let path = Uri::try_from(&location.uri).ok()?.as_path_buf()?;
#[allow(deprecated)]
Some((PathOrId::from_path_buf(path), lines))
});
.with_preview(move |_editor, location| location_to_file_location(location));
compositor.push(Box::new(overlaid(picker)));
}
}
}
fn to_locations(definitions: Option<lsp::GotoDefinitionResponse>) -> Vec<lsp::Location> {
fn to_locations(definitions: Option<lsp::GotoDefinitionResponse>) -> Vec<Location> {
match definitions {
Some(lsp::GotoDefinitionResponse::Scalar(location)) => vec![location],
Some(lsp::GotoDefinitionResponse::Array(locations)) => locations,
Some(lsp::GotoDefinitionResponse::Scalar(location)) => {
lsp_location_to_location(location).into_iter().collect()
}
Some(lsp::GotoDefinitionResponse::Array(locations)) => locations
.into_iter()
.flat_map(lsp_location_to_location)
.collect(),
Some(lsp::GotoDefinitionResponse::Link(locations)) => locations
.into_iter()
.map(|location_link| lsp::Location {
uri: location_link.target_uri,
range: location_link.target_range,
.map(|location_link| {
lsp::Location::new(location_link.target_uri, location_link.target_range)
})
.flat_map(lsp_location_to_location)
.collect(),
None => Vec::new(),
}
@ -1018,7 +988,11 @@ pub fn goto_reference(cx: &mut Context) {
cx.callback(
future,
move |editor, compositor, response: Option<Vec<lsp::Location>>| {
let items = response.unwrap_or_default();
let items: Vec<Location> = response
.into_iter()
.flatten()
.flat_map(lsp_location_to_location)
.collect();
if items.is_empty() {
editor.set_error("No references found.");
} else {

21
helix-term/src/ui/picker.rs
View File

@ -32,7 +32,7 @@
borrow::Cow,
collections::HashMap,
io::Read,
path::{Path, PathBuf},
path::Path,
sync::{
atomic::{self, AtomicUsize},
Arc,
@ -63,26 +63,12 @@
#[derive(PartialEq, Eq, Hash)]
pub enum PathOrId<'a> {
Id(DocumentId),
// See [PathOrId::from_path_buf]: this will eventually become `Path(&Path)`.
Path(Cow<'a, Path>),
}
impl<'a> PathOrId<'a> {
/// Creates a [PathOrId] from a PathBuf
///
/// # Deprecated
/// The owned version of PathOrId will be removed in a future refactor
/// and replaced with `&'a Path`. See the caller of this function for
/// more details on its removal.
#[deprecated]
pub fn from_path_buf(path_buf: PathBuf) -> Self {
Self::Path(Cow::Owned(path_buf))
}
Path(&'a Path),
}
impl<'a> From<&'a Path> for PathOrId<'a> {
fn from(path: &'a Path) -> Self {
Self::Path(Cow::Borrowed(path))
Self::Path(path)
}
}
@ -581,7 +567,6 @@ fn get_preview<'picker, 'editor>(
match path_or_id {
PathOrId::Path(path) => {
let path = path.as_ref();
if let Some(doc) = editor.document_by_path(path) {
return Some((Preview::EditorDocument(doc), range));
}

18
helix-view/src/handlers/lsp.rs
View File

@ -243,7 +243,7 @@ fn apply_document_resource_op(
match op {
ResourceOp::Create(op) => {
let uri = Uri::try_from(&op.uri)?;
let path = uri.as_path_buf().expect("URIs are valid paths");
let path = uri.as_path().expect("URIs are valid paths");
let ignore_if_exists = op.options.as_ref().map_or(false, |options| {
!options.overwrite.unwrap_or(false) && options.ignore_if_exists.unwrap_or(false)
});
@ -255,13 +255,15 @@ fn apply_document_resource_op(
}
}
fs::write(&path, [])?;
self.language_servers.file_event_handler.file_changed(path);
fs::write(path, [])?;
self.language_servers
.file_event_handler
.file_changed(path.to_path_buf());
}
}
ResourceOp::Delete(op) => {
let uri = Uri::try_from(&op.uri)?;
let path = uri.as_path_buf().expect("URIs are valid paths");
let path = uri.as_path().expect("URIs are valid paths");
if path.is_dir() {
let recursive = op
.options
@ -270,11 +272,13 @@ fn apply_document_resource_op(
.unwrap_or(false);
if recursive {
fs::remove_dir_all(&path)?
fs::remove_dir_all(path)?
} else {
fs::remove_dir(&path)?
fs::remove_dir(path)?
}
self.language_servers.file_event_handler.file_changed(path);
self.language_servers
.file_event_handler
.file_changed(path.to_path_buf());
} else if path.is_file() {
fs::remove_file(path)?;
}