252 lines
11 KiB
Rust
252 lines
11 KiB
Rust
use collections::HashMap;
|
|
use editor::{Editor, ToOffset, ToPoint};
|
|
use futures::{channel::mpsc, SinkExt, StreamExt};
|
|
use gpui::{AppContext, Task, ViewHandle};
|
|
use language::{Point, Rope};
|
|
use std::{cmp, env, fmt::Write};
|
|
use util::TryFutureExt;
|
|
|
|
use crate::{
|
|
stream_completion,
|
|
streaming_diff::{Hunk, StreamingDiff},
|
|
OpenAIRequest, RequestMessage, Role,
|
|
};
|
|
|
|
pub struct RefactoringAssistant {
|
|
pending_edits_by_editor: HashMap<usize, Task<Option<()>>>,
|
|
}
|
|
|
|
impl RefactoringAssistant {
|
|
fn new() -> Self {
|
|
Self {
|
|
pending_edits_by_editor: Default::default(),
|
|
}
|
|
}
|
|
|
|
pub fn update<F, T>(cx: &mut AppContext, f: F) -> T
|
|
where
|
|
F: FnOnce(&mut Self, &mut AppContext) -> T,
|
|
{
|
|
if !cx.has_global::<Self>() {
|
|
cx.set_global(Self::new());
|
|
}
|
|
|
|
cx.update_global(f)
|
|
}
|
|
|
|
pub fn refactor(
|
|
&mut self,
|
|
editor: &ViewHandle<Editor>,
|
|
user_prompt: &str,
|
|
cx: &mut AppContext,
|
|
) {
|
|
let api_key = if let Ok(api_key) = env::var("OPENAI_API_KEY") {
|
|
api_key
|
|
} else {
|
|
// TODO: ensure the API key is present by going through the assistant panel's flow.
|
|
return;
|
|
};
|
|
|
|
let snapshot = editor.read(cx).buffer().read(cx).snapshot(cx);
|
|
let selection = editor.read(cx).selections.newest_anchor().clone();
|
|
let selected_text = snapshot
|
|
.text_for_range(selection.start..selection.end)
|
|
.collect::<Rope>();
|
|
|
|
let mut normalized_selected_text = selected_text.clone();
|
|
let mut base_indentation: Option<language::IndentSize> = None;
|
|
let selection_start = selection.start.to_point(&snapshot);
|
|
let selection_end = selection.end.to_point(&snapshot);
|
|
if selection_start.row < selection_end.row {
|
|
for row in selection_start.row..=selection_end.row {
|
|
if snapshot.is_line_blank(row) {
|
|
continue;
|
|
}
|
|
|
|
let line_indentation = snapshot.indent_size_for_line(row);
|
|
if let Some(base_indentation) = base_indentation.as_mut() {
|
|
if line_indentation.len < base_indentation.len {
|
|
*base_indentation = line_indentation;
|
|
}
|
|
} else {
|
|
base_indentation = Some(line_indentation);
|
|
}
|
|
}
|
|
}
|
|
|
|
if let Some(base_indentation) = base_indentation {
|
|
for row in selection_start.row..=selection_end.row {
|
|
let selection_row = row - selection_start.row;
|
|
let line_start =
|
|
normalized_selected_text.point_to_offset(Point::new(selection_row, 0));
|
|
let indentation_len = if row == selection_start.row {
|
|
base_indentation.len.saturating_sub(selection_start.column)
|
|
} else {
|
|
let line_len = normalized_selected_text.line_len(selection_row);
|
|
cmp::min(line_len, base_indentation.len)
|
|
};
|
|
let indentation_end = cmp::min(
|
|
line_start + indentation_len as usize,
|
|
normalized_selected_text.len(),
|
|
);
|
|
normalized_selected_text.replace(line_start..indentation_end, "");
|
|
}
|
|
}
|
|
|
|
let language_name = snapshot
|
|
.language_at(selection.start)
|
|
.map(|language| language.name());
|
|
let language_name = language_name.as_deref().unwrap_or("");
|
|
|
|
let mut prompt = String::new();
|
|
writeln!(prompt, "Given the following {language_name} snippet:").unwrap();
|
|
writeln!(prompt, "{normalized_selected_text}").unwrap();
|
|
writeln!(prompt, "{user_prompt}.").unwrap();
|
|
writeln!(prompt, "Never make remarks, reply only with the new code.").unwrap();
|
|
let request = OpenAIRequest {
|
|
model: "gpt-4".into(),
|
|
messages: vec![RequestMessage {
|
|
role: Role::User,
|
|
content: prompt,
|
|
}],
|
|
stream: true,
|
|
};
|
|
let response = stream_completion(api_key, cx.background().clone(), request);
|
|
let editor = editor.downgrade();
|
|
self.pending_edits_by_editor.insert(
|
|
editor.id(),
|
|
cx.spawn(|mut cx| {
|
|
async move {
|
|
let _clear_highlights = util::defer({
|
|
let mut cx = cx.clone();
|
|
let editor = editor.clone();
|
|
move || {
|
|
let _ = editor.update(&mut cx, |editor, cx| {
|
|
editor.clear_text_highlights::<Self>(cx);
|
|
});
|
|
}
|
|
});
|
|
|
|
let mut edit_start = selection.start.to_offset(&snapshot);
|
|
|
|
let (mut hunks_tx, mut hunks_rx) = mpsc::channel(1);
|
|
let diff = cx.background().spawn(async move {
|
|
let mut messages = response.await?.ready_chunks(4);
|
|
let mut diff = StreamingDiff::new(selected_text.to_string());
|
|
|
|
let indentation_len;
|
|
let indentation_text;
|
|
if let Some(base_indentation) = base_indentation {
|
|
indentation_len = base_indentation.len;
|
|
indentation_text = match base_indentation.kind {
|
|
language::IndentKind::Space => " ",
|
|
language::IndentKind::Tab => "\t",
|
|
};
|
|
} else {
|
|
indentation_len = 0;
|
|
indentation_text = "";
|
|
};
|
|
|
|
let mut new_text =
|
|
indentation_text.repeat(
|
|
indentation_len.saturating_sub(selection_start.column) as usize,
|
|
);
|
|
while let Some(messages) = messages.next().await {
|
|
for message in messages {
|
|
let mut message = message?;
|
|
if let Some(choice) = message.choices.pop() {
|
|
if let Some(text) = choice.delta.content {
|
|
let mut lines = text.split('\n');
|
|
if let Some(first_line) = lines.next() {
|
|
new_text.push_str(&first_line);
|
|
}
|
|
|
|
for line in lines {
|
|
new_text.push('\n');
|
|
new_text.push_str(
|
|
&indentation_text.repeat(indentation_len as usize),
|
|
);
|
|
new_text.push_str(line);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
let hunks = diff.push_new(&new_text);
|
|
hunks_tx.send(hunks).await?;
|
|
new_text.clear();
|
|
}
|
|
hunks_tx.send(diff.finish()).await?;
|
|
|
|
anyhow::Ok(())
|
|
});
|
|
|
|
let mut first_transaction = None;
|
|
while let Some(hunks) = hunks_rx.next().await {
|
|
editor.update(&mut cx, |editor, cx| {
|
|
let mut highlights = Vec::new();
|
|
|
|
editor.buffer().update(cx, |buffer, cx| {
|
|
// Avoid grouping assistant edits with user edits.
|
|
buffer.finalize_last_transaction(cx);
|
|
|
|
buffer.start_transaction(cx);
|
|
buffer.edit(
|
|
hunks.into_iter().filter_map(|hunk| match hunk {
|
|
Hunk::Insert { text } => {
|
|
let edit_start = snapshot.anchor_after(edit_start);
|
|
Some((edit_start..edit_start, text))
|
|
}
|
|
Hunk::Remove { len } => {
|
|
let edit_end = edit_start + len;
|
|
let edit_range = snapshot.anchor_after(edit_start)
|
|
..snapshot.anchor_before(edit_end);
|
|
edit_start = edit_end;
|
|
Some((edit_range, String::new()))
|
|
}
|
|
Hunk::Keep { len } => {
|
|
let edit_end = edit_start + len;
|
|
let edit_range = snapshot.anchor_after(edit_start)
|
|
..snapshot.anchor_before(edit_end);
|
|
edit_start += len;
|
|
highlights.push(edit_range);
|
|
None
|
|
}
|
|
}),
|
|
None,
|
|
cx,
|
|
);
|
|
if let Some(transaction) = buffer.end_transaction(cx) {
|
|
if let Some(first_transaction) = first_transaction {
|
|
// Group all assistant edits into the first transaction.
|
|
buffer.merge_transactions(
|
|
transaction,
|
|
first_transaction,
|
|
cx,
|
|
);
|
|
} else {
|
|
first_transaction = Some(transaction);
|
|
buffer.finalize_last_transaction(cx);
|
|
}
|
|
}
|
|
});
|
|
|
|
editor.highlight_text::<Self>(
|
|
highlights,
|
|
gpui::fonts::HighlightStyle {
|
|
fade_out: Some(0.6),
|
|
..Default::default()
|
|
},
|
|
cx,
|
|
);
|
|
})?;
|
|
}
|
|
diff.await?;
|
|
|
|
anyhow::Ok(())
|
|
}
|
|
.log_err()
|
|
}),
|
|
);
|
|
}
|
|
}
|