404 lines
12 KiB
Rust
404 lines
12 KiB
Rust
use crate::codegen::CodegenKind;
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use language::{BufferSnapshot, OffsetRangeExt, ToOffset};
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use std::cmp::{self, Reverse};
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use std::fmt::Write;
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use std::ops::Range;
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fn summarize(buffer: &BufferSnapshot, selected_range: Range<impl ToOffset>) -> String {
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#[derive(Debug)]
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struct Match {
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collapse: Range<usize>,
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keep: Vec<Range<usize>>,
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}
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let selected_range = selected_range.to_offset(buffer);
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let mut ts_matches = buffer.matches(0..buffer.len(), |grammar| {
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Some(&grammar.embedding_config.as_ref()?.query)
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});
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let configs = ts_matches
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.grammars()
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.iter()
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.map(|g| g.embedding_config.as_ref().unwrap())
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.collect::<Vec<_>>();
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let mut matches = Vec::new();
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while let Some(mat) = ts_matches.peek() {
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let config = &configs[mat.grammar_index];
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if let Some(collapse) = mat.captures.iter().find_map(|cap| {
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if Some(cap.index) == config.collapse_capture_ix {
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Some(cap.node.byte_range())
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} else {
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None
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}
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}) {
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let mut keep = Vec::new();
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for capture in mat.captures.iter() {
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if Some(capture.index) == config.keep_capture_ix {
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keep.push(capture.node.byte_range());
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} else {
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continue;
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}
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}
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ts_matches.advance();
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matches.push(Match { collapse, keep });
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} else {
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ts_matches.advance();
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}
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}
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matches.sort_unstable_by_key(|mat| (mat.collapse.start, Reverse(mat.collapse.end)));
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let mut matches = matches.into_iter().peekable();
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let mut summary = String::new();
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let mut offset = 0;
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let mut flushed_selection = false;
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while let Some(mat) = matches.next() {
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// Keep extending the collapsed range if the next match surrounds
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// the current one.
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while let Some(next_mat) = matches.peek() {
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if mat.collapse.start <= next_mat.collapse.start
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&& mat.collapse.end >= next_mat.collapse.end
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{
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matches.next().unwrap();
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} else {
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break;
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}
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}
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if offset > mat.collapse.start {
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// Skip collapsed nodes that have already been summarized.
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offset = cmp::max(offset, mat.collapse.end);
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continue;
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}
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if offset <= selected_range.start && selected_range.start <= mat.collapse.end {
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if !flushed_selection {
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// The collapsed node ends after the selection starts, so we'll flush the selection first.
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summary.extend(buffer.text_for_range(offset..selected_range.start));
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summary.push_str("<|START|");
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if selected_range.end == selected_range.start {
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summary.push_str(">");
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} else {
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summary.extend(buffer.text_for_range(selected_range.clone()));
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summary.push_str("|END|>");
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}
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offset = selected_range.end;
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flushed_selection = true;
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}
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// If the selection intersects the collapsed node, we won't collapse it.
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if selected_range.end >= mat.collapse.start {
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continue;
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}
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}
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summary.extend(buffer.text_for_range(offset..mat.collapse.start));
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for keep in mat.keep {
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summary.extend(buffer.text_for_range(keep));
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}
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offset = mat.collapse.end;
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}
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// Flush selection if we haven't already done so.
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if !flushed_selection && offset <= selected_range.start {
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summary.extend(buffer.text_for_range(offset..selected_range.start));
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summary.push_str("<|START|");
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if selected_range.end == selected_range.start {
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summary.push_str(">");
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} else {
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summary.extend(buffer.text_for_range(selected_range.clone()));
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summary.push_str("|END|>");
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}
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offset = selected_range.end;
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}
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summary.extend(buffer.text_for_range(offset..buffer.len()));
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summary
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}
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pub fn generate_content_prompt(
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user_prompt: String,
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language_name: Option<&str>,
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buffer: &BufferSnapshot,
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range: Range<impl ToOffset>,
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kind: CodegenKind,
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) -> String {
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let mut prompt = String::new();
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// General Preamble
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if let Some(language_name) = language_name {
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writeln!(prompt, "You're an expert {language_name} engineer.\n").unwrap();
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} else {
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writeln!(prompt, "You're an expert engineer.\n").unwrap();
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}
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let outline = summarize(buffer, range);
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writeln!(
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prompt,
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"The file you are currently working on has the following outline:"
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)
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.unwrap();
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if let Some(language_name) = language_name {
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let language_name = language_name.to_lowercase();
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writeln!(prompt, "```{language_name}\n{outline}\n```").unwrap();
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} else {
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writeln!(prompt, "```\n{outline}\n```").unwrap();
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}
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match kind {
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CodegenKind::Generate { position: _ } => {
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writeln!(prompt, "In particular, the user's cursor is current on the '<|START|>' span in the above outline, with no text selected.").unwrap();
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writeln!(
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prompt,
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"Assume the cursor is located where the `<|START|` marker is."
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)
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.unwrap();
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writeln!(
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prompt,
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"Text can't be replaced, so assume your answer will be inserted at the cursor."
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)
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.unwrap();
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writeln!(
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prompt,
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"Generate text based on the users prompt: {user_prompt}"
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)
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.unwrap();
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}
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CodegenKind::Transform { range: _ } => {
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writeln!(prompt, "In particular, the user has selected a section of the text between the '<|START|' and '|END|>' spans.").unwrap();
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writeln!(
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prompt,
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"Modify the users code selected text based upon the users prompt: {user_prompt}"
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)
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.unwrap();
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writeln!(
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prompt,
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"You MUST reply with only the adjusted code (within the '<|START|' and '|END|>' spans), not the entire file."
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)
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.unwrap();
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}
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}
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if let Some(language_name) = language_name {
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writeln!(prompt, "Your answer MUST always be valid {language_name}").unwrap();
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}
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writeln!(prompt, "Always wrap your response in a Markdown codeblock").unwrap();
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writeln!(prompt, "Never make remarks about the output.").unwrap();
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prompt
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}
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#[cfg(test)]
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pub(crate) mod tests {
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use super::*;
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use std::sync::Arc;
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use gpui::AppContext;
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use indoc::indoc;
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use language::{language_settings, tree_sitter_rust, Buffer, Language, LanguageConfig, Point};
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use settings::SettingsStore;
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pub(crate) fn rust_lang() -> Language {
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Language::new(
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LanguageConfig {
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name: "Rust".into(),
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path_suffixes: vec!["rs".to_string()],
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..Default::default()
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},
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Some(tree_sitter_rust::language()),
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)
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.with_embedding_query(
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r#"
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(
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[(line_comment) (attribute_item)]* @context
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.
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[
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(struct_item
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name: (_) @name)
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(enum_item
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name: (_) @name)
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(impl_item
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trait: (_)? @name
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"for"? @name
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type: (_) @name)
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(trait_item
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name: (_) @name)
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(function_item
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name: (_) @name
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body: (block
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"{" @keep
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"}" @keep) @collapse)
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(macro_definition
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name: (_) @name)
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] @item
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)
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"#,
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)
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.unwrap()
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}
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#[gpui::test]
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fn test_outline_for_prompt(cx: &mut AppContext) {
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cx.set_global(SettingsStore::test(cx));
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language_settings::init(cx);
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let text = indoc! {"
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struct X {
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a: usize,
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b: usize,
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}
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impl X {
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fn new() -> Self {
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let a = 1;
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let b = 2;
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Self { a, b }
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}
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pub fn a(&self, param: bool) -> usize {
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self.a
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}
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pub fn b(&self) -> usize {
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self.b
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}
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}
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"};
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let buffer =
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cx.add_model(|cx| Buffer::new(0, 0, text).with_language(Arc::new(rust_lang()), cx));
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let snapshot = buffer.read(cx).snapshot();
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assert_eq!(
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summarize(&snapshot, Point::new(1, 4)..Point::new(1, 4)),
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indoc! {"
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struct X {
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<|START|>a: usize,
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b: usize,
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}
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impl X {
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fn new() -> Self {}
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pub fn a(&self, param: bool) -> usize {}
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pub fn b(&self) -> usize {}
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}
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"}
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);
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assert_eq!(
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summarize(&snapshot, Point::new(8, 12)..Point::new(8, 14)),
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indoc! {"
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struct X {
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a: usize,
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b: usize,
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}
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impl X {
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fn new() -> Self {
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let <|START|a |END|>= 1;
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let b = 2;
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Self { a, b }
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}
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pub fn a(&self, param: bool) -> usize {}
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pub fn b(&self) -> usize {}
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}
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"}
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);
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assert_eq!(
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summarize(&snapshot, Point::new(6, 0)..Point::new(6, 0)),
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indoc! {"
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struct X {
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a: usize,
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b: usize,
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}
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impl X {
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<|START|>
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fn new() -> Self {}
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pub fn a(&self, param: bool) -> usize {}
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pub fn b(&self) -> usize {}
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}
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"}
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);
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assert_eq!(
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summarize(&snapshot, Point::new(21, 0)..Point::new(21, 0)),
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indoc! {"
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struct X {
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a: usize,
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b: usize,
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}
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impl X {
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fn new() -> Self {}
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pub fn a(&self, param: bool) -> usize {}
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pub fn b(&self) -> usize {}
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}
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<|START|>"}
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);
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// Ensure nested functions get collapsed properly.
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let text = indoc! {"
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struct X {
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a: usize,
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b: usize,
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}
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impl X {
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fn new() -> Self {
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let a = 1;
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let b = 2;
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Self { a, b }
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}
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pub fn a(&self, param: bool) -> usize {
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let a = 30;
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fn nested() -> usize {
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3
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}
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self.a + nested()
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}
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pub fn b(&self) -> usize {
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self.b
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}
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}
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"};
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buffer.update(cx, |buffer, cx| buffer.set_text(text, cx));
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let snapshot = buffer.read(cx).snapshot();
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assert_eq!(
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summarize(&snapshot, Point::new(0, 0)..Point::new(0, 0)),
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indoc! {"
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<|START|>struct X {
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a: usize,
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b: usize,
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}
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impl X {
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fn new() -> Self {}
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pub fn a(&self, param: bool) -> usize {}
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pub fn b(&self) -> usize {}
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}
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"}
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);
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}
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}
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