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refactor completion and signature help using hooks

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This commit is contained in:
Pascal Kuthe 2023-12-01 00:03:27 +01:00 • committed by Blaž Hrastnik
parent 13ed4f6c47
commit 8e592a151f
19 changed files with 1022 additions and 560 deletions
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156
helix-term/src/commands/lsp.rs
View file

@ -1,4 +1,4 @@
use futures_util::{future::BoxFuture, stream::FuturesUnordered, FutureExt};
use futures_util::{stream::FuturesUnordered, FutureExt};
use helix_lsp::{
block_on,
lsp::{
@ -8,21 +8,21 @@ use helix_lsp::{
util::{diagnostic_to_lsp_diagnostic, lsp_range_to_range, range_to_lsp_range},
Client, OffsetEncoding,
};
use serde_json::Value;
use tokio_stream::StreamExt;
use tui::{
text::{Span, Spans},
widgets::Row,
};
use super::{align_view, push_jump, Align, Context, Editor, Open};
use super::{align_view, push_jump, Align, Context, Editor};
use helix_core::{syntax::LanguageServerFeature, text_annotations::InlineAnnotation, Selection};
use helix_stdx::path;
use helix_view::{
document::{DocumentInlayHints, DocumentInlayHintsId, Mode},
document::{DocumentInlayHints, DocumentInlayHintsId},
editor::Action,
graphics::Margin,
handlers::lsp::SignatureHelpInvoked,
theme::Style,
Document, View,
};
@ -30,10 +30,7 @@ use helix_view::{
use crate::{
compositor::{self, Compositor},
job::Callback,
ui::{
self, lsp::SignatureHelp, overlay::overlaid, DynamicPicker, FileLocation, Picker, Popup,
PromptEvent,
},
ui::{self, overlay::overlaid, DynamicPicker, FileLocation, Picker, Popup, PromptEvent},
};
use std::{
@ -42,7 +39,6 @@ use std::{
fmt::Write,
future::Future,
path::PathBuf,
sync::Arc,
};
/// Gets the first language server that is attached to a document which supports a specific feature.
@ -1132,146 +1128,10 @@ pub fn goto_reference(cx: &mut Context) {
);
}
#[derive(PartialEq, Eq, Clone, Copy)]
pub enum SignatureHelpInvoked {
Manual,
Automatic,
}
pub fn signature_help(cx: &mut Context) {
signature_help_impl(cx, SignatureHelpInvoked::Manual)
}
pub fn signature_help_impl(cx: &mut Context, invoked: SignatureHelpInvoked) {
let (view, doc) = current!(cx.editor);
// TODO merge multiple language server signature help into one instead of just taking the first language server that supports it
let future = doc
.language_servers_with_feature(LanguageServerFeature::SignatureHelp)
.find_map(|language_server| {
let pos = doc.position(view.id, language_server.offset_encoding());
language_server.text_document_signature_help(doc.identifier(), pos, None)
});
let Some(future) = future else {
// Do not show the message if signature help was invoked
// automatically on backspace, trigger characters, etc.
if invoked == SignatureHelpInvoked::Manual {
cx.editor
.set_error("No configured language server supports signature-help");
}
return;
};
signature_help_impl_with_future(cx, future.boxed(), invoked);
}
pub fn signature_help_impl_with_future(
cx: &mut Context,
future: BoxFuture<'static, helix_lsp::Result<Value>>,
invoked: SignatureHelpInvoked,
) {
cx.callback(
future,
move |editor, compositor, response: Option<lsp::SignatureHelp>| {
let config = &editor.config();
if !(config.lsp.auto_signature_help
|| SignatureHelp::visible_popup(compositor).is_some()
|| invoked == SignatureHelpInvoked::Manual)
{
return;
}
// If the signature help invocation is automatic, don't show it outside of Insert Mode:
// it very probably means the server was a little slow to respond and the user has
// already moved on to something else, making a signature help popup will just be an
// annoyance, see https://github.com/helix-editor/helix/issues/3112
if invoked == SignatureHelpInvoked::Automatic && editor.mode != Mode::Insert {
return;
}
let response = match response {
// According to the spec the response should be None if there
// are no signatures, but some servers don't follow this.
Some(s) if !s.signatures.is_empty() => s,
_ => {
compositor.remove(SignatureHelp::ID);
return;
}
};
let doc = doc!(editor);
let language = doc.language_name().unwrap_or("");
let signature = match response
.signatures
.get(response.active_signature.unwrap_or(0) as usize)
{
Some(s) => s,
None => return,
};
let mut contents = SignatureHelp::new(
signature.label.clone(),
language.to_string(),
Arc::clone(&editor.syn_loader),
);
let signature_doc = if config.lsp.display_signature_help_docs {
signature.documentation.as_ref().map(|doc| match doc {
lsp::Documentation::String(s) => s.clone(),
lsp::Documentation::MarkupContent(markup) => markup.value.clone(),
})
} else {
None
};
contents.set_signature_doc(signature_doc);
let active_param_range = || -> Option<(usize, usize)> {
let param_idx = signature
.active_parameter
.or(response.active_parameter)
.unwrap_or(0) as usize;
let param = signature.parameters.as_ref()?.get(param_idx)?;
match &param.label {
lsp::ParameterLabel::Simple(string) => {
let start = signature.label.find(string.as_str())?;
Some((start, start + string.len()))
}
lsp::ParameterLabel::LabelOffsets([start, end]) => {
// LS sends offsets based on utf-16 based string representation
// but highlighting in helix is done using byte offset.
use helix_core::str_utils::char_to_byte_idx;
let from = char_to_byte_idx(&signature.label, *start as usize);
let to = char_to_byte_idx(&signature.label, *end as usize);
Some((from, to))
}
}
};
contents.set_active_param_range(active_param_range());
let old_popup = compositor.find_id::<Popup<SignatureHelp>>(SignatureHelp::ID);
let mut popup = Popup::new(SignatureHelp::ID, contents)
.position(old_popup.and_then(|p| p.get_position()))
.position_bias(Open::Above)
.ignore_escape_key(true);
// Don't create a popup if it intersects the auto-complete menu.
let size = compositor.size();
if compositor
.find::<ui::EditorView>()
.unwrap()
.completion
.as_mut()
.map(|completion| completion.area(size, editor))
.filter(|area| area.intersects(popup.area(size, editor)))
.is_some()
{
return;
}
compositor.replace_or_push(SignatureHelp::ID, popup);
},
);
cx.editor
.handlers
.trigger_signature_help(SignatureHelpInvoked::Manual, cx.editor)
}
pub fn hover(cx: &mut Context) {