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Merge #5052

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5052: Minor, move code r=matklad a=matklad



bors r+
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Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
This commit is contained in:
bors[bot] 2020-06-25 07:51:54 +00:00 committed by GitHub
commit 193ea7cf9a
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2 changed files with 123 additions and 120 deletions
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117
crates/rust-analyzer/src/lsp_utils.rs
View file

@ -1,9 +1,11 @@
//! Utilities for LSP-related boilerplate code.
use std::error::Error;
use std::{error::Error, ops::Range};
use crate::from_proto;
use crossbeam_channel::Sender;
use lsp_server::{Message, Notification};
use ra_db::Canceled;
use ra_ide::LineIndex;
use serde::{de::DeserializeOwned, Serialize};
pub fn show_message(
@ -42,3 +44,116 @@ where
{
Notification::new(N::METHOD.to_string(), params)
}
pub(crate) fn apply_document_changes(
old_text: &mut String,
content_changes: Vec<lsp_types::TextDocumentContentChangeEvent>,
) {
let mut line_index = LineIndex::new(old_text);
// The changes we got must be applied sequentially, but can cross lines so we
// have to keep our line index updated.
// Some clients (e.g. Code) sort the ranges in reverse. As an optimization, we
// remember the last valid line in the index and only rebuild it if needed.
// The VFS will normalize the end of lines to `\n`.
enum IndexValid {
All,
UpToLineExclusive(u64),
}
impl IndexValid {
fn covers(&self, line: u64) -> bool {
match *self {
IndexValid::UpToLineExclusive(to) => to > line,
_ => true,
}
}
}
let mut index_valid = IndexValid::All;
for change in content_changes {
match change.range {
Some(range) => {
if !index_valid.covers(range.end.line) {
line_index = LineIndex::new(&old_text);
}
index_valid = IndexValid::UpToLineExclusive(range.start.line);
let range = from_proto::text_range(&line_index, range);
old_text.replace_range(Range::<usize>::from(range), &change.text);
}
None => {
*old_text = change.text;
index_valid = IndexValid::UpToLineExclusive(0);
}
}
}
}
#[cfg(test)]
mod tests {
use lsp_types::{Position, Range, TextDocumentContentChangeEvent};
use super::*;
#[test]
fn test_apply_document_changes() {
macro_rules! c {
[$($sl:expr, $sc:expr; $el:expr, $ec:expr => $text:expr),+] => {
vec![$(TextDocumentContentChangeEvent {
range: Some(Range {
start: Position { line: $sl, character: $sc },
end: Position { line: $el, character: $ec },
}),
range_length: None,
text: String::from($text),
}),+]
};
}
let mut text = String::new();
apply_document_changes(&mut text, vec![]);
assert_eq!(text, "");
apply_document_changes(
&mut text,
vec![TextDocumentContentChangeEvent {
range: None,
range_length: None,
text: String::from("the"),
}],
);
assert_eq!(text, "the");
apply_document_changes(&mut text, c![0, 3; 0, 3 => " quick"]);
assert_eq!(text, "the quick");
apply_document_changes(&mut text, c![0, 0; 0, 4 => "", 0, 5; 0, 5 => " foxes"]);
assert_eq!(text, "quick foxes");
apply_document_changes(&mut text, c![0, 11; 0, 11 => "\ndream"]);
assert_eq!(text, "quick foxes\ndream");
apply_document_changes(&mut text, c![1, 0; 1, 0 => "have "]);
assert_eq!(text, "quick foxes\nhave dream");
apply_document_changes(
&mut text,
c![0, 0; 0, 0 => "the ", 1, 4; 1, 4 => " quiet", 1, 16; 1, 16 => "s\n"],
);
assert_eq!(text, "the quick foxes\nhave quiet dreams\n");
apply_document_changes(&mut text, c![0, 15; 0, 15 => "\n", 2, 17; 2, 17 => "\n"]);
assert_eq!(text, "the quick foxes\n\nhave quiet dreams\n\n");
apply_document_changes(
&mut text,
c![1, 0; 1, 0 => "DREAM", 2, 0; 2, 0 => "they ", 3, 0; 3, 0 => "DON'T THEY?"],
);
assert_eq!(text, "the quick foxes\nDREAM\nthey have quiet dreams\nDON'T THEY?\n");
apply_document_changes(&mut text, c![0, 10; 1, 5 => "", 2, 0; 2, 12 => ""]);
assert_eq!(text, "the quick \nthey have quiet dreams\n");
text = String::from("❤️");
apply_document_changes(&mut text, c![0, 0; 0, 0 => "a"]);
assert_eq!(text, "a❤️");
text = String::from("a\nb");
apply_document_changes(&mut text, c![0, 1; 1, 0 => "\nțc", 0, 1; 1, 1 => "d"]);
assert_eq!(text, "adcb");
text = String::from("a\nb");
apply_document_changes(&mut text, c![0, 1; 1, 0 => "ț\nc", 0, 2; 0, 2 => "c"]);
assert_eq!(text, "ațc\ncb");
}
}

126
crates/rust-analyzer/src/main_loop.rs
View file

@ -1,18 +1,16 @@
//! The main loop of `rust-analyzer` responsible for dispatching LSP
//! requests/replies and notifications back to the client.
use std::{
env, fmt,
ops::Range,
panic,
env, fmt, panic,
sync::Arc,
time::{Duration, Instant},
};
use crossbeam_channel::{never, select, unbounded, RecvError, Sender};
use lsp_server::{Connection, ErrorCode, Message, Notification, Request, RequestId, Response};
use lsp_types::{request::Request as _, NumberOrString, TextDocumentContentChangeEvent};
use lsp_types::{request::Request as _, NumberOrString};
use ra_db::VfsPath;
use ra_ide::{Canceled, FileId, LineIndex};
use ra_ide::{Canceled, FileId};
use ra_prof::profile;
use ra_project_model::{PackageRoot, ProjectWorkspace};
use serde::{de::DeserializeOwned, Serialize};
@ -24,7 +22,10 @@ use crate::{
from_proto,
global_state::{file_id_to_url, GlobalState, GlobalStateSnapshot, Status},
handlers, lsp_ext,
lsp_utils::{is_canceled, notification_cast, notification_is, notification_new, show_message},
lsp_utils::{
apply_document_changes, is_canceled, notification_cast, notification_is, notification_new,
show_message,
},
request_metrics::RequestMetrics,
LspError, Result,
};
@ -548,49 +549,6 @@ fn on_notification(
Ok(())
}
fn apply_document_changes(
old_text: &mut String,
content_changes: Vec<TextDocumentContentChangeEvent>,
) {
let mut line_index = LineIndex::new(old_text);
// The changes we got must be applied sequentially, but can cross lines so we
// have to keep our line index updated.
// Some clients (e.g. Code) sort the ranges in reverse. As an optimization, we
// remember the last valid line in the index and only rebuild it if needed.
// The VFS will normalize the end of lines to `\n`.
enum IndexValid {
All,
UpToLineExclusive(u64),
}
impl IndexValid {
fn covers(&self, line: u64) -> bool {
match *self {
IndexValid::UpToLineExclusive(to) => to > line,
_ => true,
}
}
}
let mut index_valid = IndexValid::All;
for change in content_changes {
match change.range {
Some(range) => {
if !index_valid.covers(range.end.line) {
line_index = LineIndex::new(&old_text);
}
index_valid = IndexValid::UpToLineExclusive(range.start.line);
let range = from_proto::text_range(&line_index, range);
old_text.replace_range(Range::<usize>::from(range), &change.text);
}
None => {
*old_text = change.text;
index_valid = IndexValid::UpToLineExclusive(0);
}
}
}
}
fn on_check_task(
task: flycheck::Message,
global_state: &mut GlobalState,
@ -862,73 +820,3 @@ fn update_file_notifications_on_threadpool(
})
}
}
#[cfg(test)]
mod tests {
use lsp_types::{Position, Range, TextDocumentContentChangeEvent};
use super::*;
#[test]
fn test_apply_document_changes() {
macro_rules! c {
[$($sl:expr, $sc:expr; $el:expr, $ec:expr => $text:expr),+] => {
vec![$(TextDocumentContentChangeEvent {
range: Some(Range {
start: Position { line: $sl, character: $sc },
end: Position { line: $el, character: $ec },
}),
range_length: None,
text: String::from($text),
}),+]
};
}
let mut text = String::new();
apply_document_changes(&mut text, vec![]);
assert_eq!(text, "");
apply_document_changes(
&mut text,
vec![TextDocumentContentChangeEvent {
range: None,
range_length: None,
text: String::from("the"),
}],
);
assert_eq!(text, "the");
apply_document_changes(&mut text, c![0, 3; 0, 3 => " quick"]);
assert_eq!(text, "the quick");
apply_document_changes(&mut text, c![0, 0; 0, 4 => "", 0, 5; 0, 5 => " foxes"]);
assert_eq!(text, "quick foxes");
apply_document_changes(&mut text, c![0, 11; 0, 11 => "\ndream"]);
assert_eq!(text, "quick foxes\ndream");
apply_document_changes(&mut text, c![1, 0; 1, 0 => "have "]);
assert_eq!(text, "quick foxes\nhave dream");
apply_document_changes(
&mut text,
c![0, 0; 0, 0 => "the ", 1, 4; 1, 4 => " quiet", 1, 16; 1, 16 => "s\n"],
);
assert_eq!(text, "the quick foxes\nhave quiet dreams\n");
apply_document_changes(&mut text, c![0, 15; 0, 15 => "\n", 2, 17; 2, 17 => "\n"]);
assert_eq!(text, "the quick foxes\n\nhave quiet dreams\n\n");
apply_document_changes(
&mut text,
c![1, 0; 1, 0 => "DREAM", 2, 0; 2, 0 => "they ", 3, 0; 3, 0 => "DON'T THEY?"],
);
assert_eq!(text, "the quick foxes\nDREAM\nthey have quiet dreams\nDON'T THEY?\n");
apply_document_changes(&mut text, c![0, 10; 1, 5 => "", 2, 0; 2, 12 => ""]);
assert_eq!(text, "the quick \nthey have quiet dreams\n");
text = String::from("❤️");
apply_document_changes(&mut text, c![0, 0; 0, 0 => "a"]);
assert_eq!(text, "a❤️");
text = String::from("a\nb");
apply_document_changes(&mut text, c![0, 1; 1, 0 => "\nțc", 0, 1; 1, 1 => "d"]);
assert_eq!(text, "adcb");
text = String::from("a\nb");
apply_document_changes(&mut text, c![0, 1; 1, 0 => "ț\nc", 0, 2; 0, 2 => "c"]);
assert_eq!(text, "ațc\ncb");
}
}