Comments (10)
wbthomason
commented on June 3, 2024
1
I fixed this; it was indeed not a problem with coc or coc-rls. Turns out an old script was being sourced that set RUST_SRC_PATH to an invalid value; apparently VS Code ignores this variable or handles it being incorrect. Sorry for the trouble and thank you for the help!
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chemzqm
commented on June 3, 2024
Try add "rust-client.channel": "stable", in your coc-settings.json, don't know why nightly is broken for me.
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wbthomason
commented on June 3, 2024
Hmm, unfortunately that changes nothing. Explicitly setting nightly also has no effect (though that's more expected).
I'm testing this using a new project (e.g. cargo new coc-rls-test) and editing src/main.rs. I'm on Arch Linux; rls --version is "rls-preview 1.33.0 (9f3c906 2019-01-20)".
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chemzqm
commented on June 3, 2024
Don't know what happened, consider check out output channel of rust.
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wbthomason
commented on June 3, 2024
In the process of constructing
use std::thread;
use std::collections::HashMap;
fn main() {
println!("Hello, world!");
}from the main.rs created by cargo new, I get the following output:
## Output channel: rust
error: expected identifier, found keyword `fn`
--> <racer-file>:2:1
|
2 | fn main() {
| ^^ expected identifier, found keyword
error: expected one of `::`, `;`, or `as`, found `main`
--> <racer-file>:2:4
|
2 | fn main() {
| ^^^^ expected one of `::`, `;`, or `as` here
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:2:1
|
1 | use s
| - expected one of `::`, `;`, or `as` here
2 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:2:1
|
1 | use std
| - expected one of `::`, `;`, or `as` here
2 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `:`
--> <racer-file>:1:8
|
1 | use std:
| ^ expected one of `::`, `;`, or `as` here
error: expected identifier, found keyword `fn`
--> <racer-file>:2:1
|
2 | fn main() {
| ^^ expected identifier, found keyword
error: expected one of `::`, `;`, or `as`, found `main`
--> <racer-file>:2:4
|
2 | fn main() {
| ^^^^ expected one of `::`, `;`, or `as` here
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:2:1
|
1 | use std::t
| - expected one of `::`, `;`, or `as` here
2 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:2:1
|
1 | use std::thr
| - expected one of `::`, `;`, or `as` here
2 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:2:1
|
1 | use std::threa
| - expected one of `::`, `;`, or `as` here
2 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:3:1
|
1 | use s
| - expected one of `::`, `;`, or `as` here
2 |
3 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:3:1
|
1 | use std
| - expected one of `::`, `;`, or `as` here
2 |
3 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `:`
--> <racer-file>:1:8
|
1 | use std:
| ^ expected one of `::`, `;`, or `as` here
error: expected one of `::`, `;`, or `as`, found `:`
--> <racer-file>:1:8
|
1 | use std:
| ^ expected one of `::`, `;`, or `as` here
error: expected identifier, found keyword `fn`
--> <racer-file>:3:1
|
3 | fn main() {
| ^^ expected identifier, found keyword
error: expected one of `::`, `;`, or `as`, found `main`
--> <racer-file>:3:4
|
3 | fn main() {
| ^^^^ expected one of `::`, `;`, or `as` here
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:3:1
|
1 | use std::c
| - expected one of `::`, `;`, or `as` here
2 |
3 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:3:1
|
1 | use std::col
| - expected one of `::`, `;`, or `as` here
2 |
3 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:3:1
|
1 | use std::colle
| - expected one of `::`, `;`, or `as` here
2 |
3 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:3:1
|
1 | use std::collect
| - expected one of `::`, `;`, or `as` here
2 |
3 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:3:1
|
1 | use std::collection
| - expected one of `::`, `;`, or `as` here
2 |
3 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `:`
--> <racer-file>:1:21
|
1 | use std::collections:
| ^ expected one of `::`, `;`, or `as` here
error: expected identifier, found keyword `fn`
--> <racer-file>:3:1
|
3 | fn main() {
| ^^ expected identifier, found keyword
error: expected one of `::`, `;`, or `as`, found `main`
--> <racer-file>:3:4
|
3 | fn main() {
| ^^^^ expected one of `::`, `;`, or `as` here
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:3:1
|
1 | use std::collections::H
| - expected one of `::`, `;`, or `as` here
2 |
3 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:3:1
|
1 | use std::collections::Hash
| - expected one of `::`, `;`, or `as` here
2 |
3 | fn main() {
| ^^ unexpected token
error: expected one of `::`, `;`, or `as`, found `fn`
--> <racer-file>:3:1
|
1 | use std::collections::HashMa
| - expected one of `::`, `;`, or `as` here
2 |
3 | fn main() {
| ^^ unexpected token
It seems like RLS is failing to parse the file, maybe? Though this doesn't happen in VSCode, so I don't think it's a RLS error.
The relevant part of my VS Code config is:
"rust.all_features": true,
"rust.rustup": {
"toolchain": "stable-x86_64-unknown-linux-gnu",
"nightlyToolchain": "nightly-x86_64-unknown-linux-gnu"
},
"rust.mode": "rls",
"rust.rls": {
"useRustfmt": true
}from coc-rls.
wbthomason
commented on June 3, 2024
@chemzqm: Just to confirm, you do get completion in the example I gave? And your rls version and coc config is the same as what I listed?
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chemzqm
commented on June 3, 2024
Sure, I only have those
"rust.trace.server": "verbose",
"rust-client.channel": "stable",for coc-rls in my settings file.
Looks like the server have trouble parsing your file, so it doesn't provide any completion.
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chemzqm
commented on June 3, 2024
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wbthomason
commented on June 3, 2024
That is bizarre. With the exact same file you're editing and the example config from the coc.nvim README (with the rust-related settings you mention above added), I get nothing for completions on items in std, but do with VS Code (also using RLS).
Looking at the verbose server output, as above there are lots of errors about failing to parse the file, and the result of completion requests is always []. But only for completion requests on std items; items from 3rd party libraries succeed correctly. I'm very confused by this...
What does rls --version output for you? What Neovim version are you using?
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wbthomason
commented on June 3, 2024
Hmm. I just tried the same example using LCN and ncm2, and have the same symptoms. Although I've still no idea what's causing this bug, that seems to imply it isn't a problem with coc-rls, at least? As such, I'll close this issue. Thanks for the help!
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