use super::{create_label_for_command, SlashCommand, SlashCommandOutput};use anyhow::{anyhow, Result};use assistant_slash_command::{ArgumentCompletion, SlashCommandOutputSection};use fuzzy::{PathMatch, StringMatchCandidate};use gpui::{AppContext, Model, Task, View, WeakView};use language::{    Anchor, BufferSnapshot, DiagnosticEntry, DiagnosticSeverity, LspAdapterDelegate,    OffsetRangeExt, ToOffset,};use project::{DiagnosticSummary, PathMatchCandidateSet, Project};use rope::Point;use std::fmt::Write;use std::path::{Path, PathBuf};use std::{    ops::Range,    sync::{atomic::AtomicBool, Arc},};use ui::prelude::*;use util::paths::PathMatcher;use util::ResultExt;use workspace::Workspace; pub(crate) struct DiagnosticsSlashCommand; impl DiagnosticsSlashCommand {    fn search_paths(        &self,        query: String,        cancellation_flag: Arc<AtomicBool>,        workspace: &View<Workspace>,        cx: &mut AppContext,    ) -> Task<Vec<PathMatch>> {        if query.is_empty() {            let workspace = workspace.read(cx);            let entries = workspace.recent_navigation_history(Some(10), cx);            let path_prefix: Arc<str> = Arc::default();            Task::ready(                entries                    .into_iter()                    .map(|(entry, _)| PathMatch {                        score: 0.,                        positions: Vec::new(),                        worktree_id: entry.worktree_id.to_usize(),                        path: entry.path.clone(),                        path_prefix: path_prefix.clone(),                        is_dir: false, // Diagnostics can't be produced for directories                        distance_to_relative_ancestor: 0,                    })                    .collect(),            )        } else {            let worktrees = workspace.read(cx).visible_worktrees(cx).collect::<Vec<_>>();            let candidate_sets = worktrees                .into_iter()                .map(|worktree| {                    let worktree = worktree.read(cx);                    PathMatchCandidateSet {                        snapshot: worktree.snapshot(),                        include_ignored: worktree                            .root_entry()                            .map_or(false, |entry| entry.is_ignored),                        include_root_name: true,                        candidates: project::Candidates::Entries,                    }                })                .collect::<Vec<_>>();             let executor = cx.background_executor().clone();            cx.foreground_executor().spawn(async move {                fuzzy::match_path_sets(                    candidate_sets.as_slice(),                    query.as_str(),                    None,                    false,                    100,                    &cancellation_flag,                    executor,                )                .await            })        }    }} impl SlashCommand for DiagnosticsSlashCommand {    fn name(&self) -> String {        "diagnostics".into()    }     fn label(&self, cx: &AppContext) -> language::CodeLabel {        create_label_for_command("diagnostics", &[INCLUDE_WARNINGS_ARGUMENT], cx)    }     fn description(&self) -> String {        "Insert diagnostics".into()    }     fn menu_text(&self) -> String {        "Insert Diagnostics".into()    }     fn requires_argument(&self) -> bool {        false    }     fn accepts_arguments(&self) -> bool {        true    }     fn complete_argument(        self: Arc<Self>,        arguments: &[String],        cancellation_flag: Arc<AtomicBool>,        workspace: Option<WeakView<Workspace>>,        cx: &mut WindowContext,    ) -> Task<Result<Vec<ArgumentCompletion>>> {        let Some(workspace) = workspace.and_then(|workspace| workspace.upgrade()) else {            return Task::ready(Err(anyhow!("workspace was dropped")));        };        let query = arguments.last().cloned().unwrap_or_default();         let paths = self.search_paths(query.clone(), cancellation_flag.clone(), &workspace, cx);        let executor = cx.background_executor().clone();        cx.background_executor().spawn(async move {            let mut matches: Vec<String> = paths                .await                .into_iter()                .map(|path_match| {                    format!(                        "{}{}",                        path_match.path_prefix,                        path_match.path.to_string_lossy()                    )                })                .collect();             matches.extend(                fuzzy::match_strings(                    &Options::match_candidates_for_args(),                    &query,                    false,                    10,                    &cancellation_flag,                    executor,                )                .await                .into_iter()                .map(|candidate| candidate.string),            );             Ok(matches                .into_iter()                .map(|completion| ArgumentCompletion {                    label: completion.clone().into(),                    new_text: completion,                    after_completion: assistant_slash_command::AfterCompletion::Run,                    replace_previous_arguments: false,                })                .collect())        })    }     fn run(        self: Arc<Self>,        arguments: &[String],        workspace: WeakView<Workspace>,        _delegate: Option<Arc<dyn LspAdapterDelegate>>,        cx: &mut WindowContext,    ) -> Task<Result<SlashCommandOutput>> {        let Some(workspace) = workspace.upgrade() else {            return Task::ready(Err(anyhow!("workspace was dropped")));        };         let options = Options::parse(arguments);         let task = collect_diagnostics(workspace.read(cx).project().clone(), options, cx);         cx.spawn(move |_| async move {            let Some((text, sections)) = task.await? else {                return Ok(SlashCommandOutput {                    sections: vec![SlashCommandOutputSection {                        range: 0..1,                        icon: IconName::Library,                        label: "No Diagnostics".into(),                    }],                    text: "\n".to_string(),                    run_commands_in_text: true,                });            };             let sections = sections                .into_iter()                .map(|(range, placeholder_type)| SlashCommandOutputSection {                    range,                    icon: match placeholder_type {                        PlaceholderType::Root(_, _) => IconName::ExclamationTriangle,                        PlaceholderType::File(_) => IconName::File,                        PlaceholderType::Diagnostic(DiagnosticType::Error, _) => IconName::XCircle,                        PlaceholderType::Diagnostic(DiagnosticType::Warning, _) => {                            IconName::ExclamationTriangle                        }                    },                    label: match placeholder_type {                        PlaceholderType::Root(summary, source) => {                            let mut label = String::new();                            label.push_str("Diagnostics");                            if let Some(source) = source {                                write!(label, " ({})", source).unwrap();                            }                             if summary.error_count > 0 || summary.warning_count > 0 {                                label.push(':');                                 if summary.error_count > 0 {                                    write!(label, " {} errors", summary.error_count).unwrap();                                    if summary.warning_count > 0 {                                        label.push_str(",");                                    }                                }                                 if summary.warning_count > 0 {                                    write!(label, " {} warnings", summary.warning_count).unwrap();                                }                            }                             label.into()                        }                        PlaceholderType::File(file_path) => file_path.into(),                        PlaceholderType::Diagnostic(_, message) => message.into(),                    },                })                .collect();             Ok(SlashCommandOutput {                text,                sections,                run_commands_in_text: false,            })        })    }} #[derive(Default)]struct Options {    include_warnings: bool,    path_matcher: Option<PathMatcher>,} const INCLUDE_WARNINGS_ARGUMENT: &str = "--include-warnings"; impl Options {    fn parse(arguments: &[String]) -> Self {        let mut include_warnings = false;        let mut path_matcher = None;        for arg in arguments {            if arg == INCLUDE_WARNINGS_ARGUMENT {                include_warnings = true;            } else {                path_matcher = PathMatcher::new(&[arg.to_owned()]).log_err();            }        }        Self {            include_warnings,            path_matcher,        }    }     fn match_candidates_for_args() -> [StringMatchCandidate; 1] {        [StringMatchCandidate::new(            0,            INCLUDE_WARNINGS_ARGUMENT.to_string(),        )]    }} fn collect_diagnostics(    project: Model<Project>,    options: Options,    cx: &mut AppContext,) -> Task<Result<Option<(String, Vec<(Range<usize>, PlaceholderType)>)>>> {    let error_source = if let Some(path_matcher) = &options.path_matcher {        debug_assert_eq!(path_matcher.sources().len(), 1);        Some(path_matcher.sources().first().cloned().unwrap_or_default())    } else {        None    };     let glob_is_exact_file_match = if let Some(path) = options        .path_matcher        .as_ref()        .and_then(|pm| pm.sources().first())    {        PathBuf::try_from(path)            .ok()            .and_then(|path| {                project.read(cx).worktrees(cx).find_map(|worktree| {                    let worktree = worktree.read(cx);                    let worktree_root_path = Path::new(worktree.root_name());                    let relative_path = path.strip_prefix(worktree_root_path).ok()?;                    worktree.absolutize(&relative_path).ok()                })            })            .is_some()    } else {        false    };     let project_handle = project.downgrade();    let diagnostic_summaries: Vec<_> = project        .read(cx)        .diagnostic_summaries(false, cx)        .flat_map(|(path, _, summary)| {            let worktree = project.read(cx).worktree_for_id(path.worktree_id, cx)?;            let mut path_buf = PathBuf::from(worktree.read(cx).root_name());            path_buf.push(&path.path);            Some((path, path_buf, summary))        })        .collect();     cx.spawn(|mut cx| async move {        let mut text = String::new();        if let Some(error_source) = error_source.as_ref() {            writeln!(text, "diagnostics: {}", error_source).unwrap();        } else {            writeln!(text, "diagnostics").unwrap();        }        let mut sections: Vec<(Range<usize>, PlaceholderType)> = Vec::new();         let mut project_summary = DiagnosticSummary::default();        for (project_path, path, summary) in diagnostic_summaries {            if let Some(path_matcher) = &options.path_matcher {                if !path_matcher.is_match(&path) {                    continue;                }            }             project_summary.error_count += summary.error_count;            if options.include_warnings {                project_summary.warning_count += summary.warning_count;            } else if summary.error_count == 0 {                continue;            }             let last_end = text.len();            let file_path = path.to_string_lossy().to_string();            if !glob_is_exact_file_match {                writeln!(&mut text, "{file_path}").unwrap();            }             if let Some(buffer) = project_handle                .update(&mut cx, |project, cx| project.open_buffer(project_path, cx))?                .await                .log_err()            {                collect_buffer_diagnostics(                    &mut text,                    &mut sections,                    cx.read_model(&buffer, |buffer, _| buffer.snapshot())?,                    options.include_warnings,                );            }             if !glob_is_exact_file_match {                sections.push((                    last_end..text.len().saturating_sub(1),                    PlaceholderType::File(file_path),                ))            }        }         // No diagnostics found        if sections.is_empty() {            return Ok(None);        }         sections.push((            0..text.len(),            PlaceholderType::Root(project_summary, error_source),        ));        Ok(Some((text, sections)))    })} pub fn buffer_has_error_diagnostics(snapshot: &BufferSnapshot) -> bool {    for (_, group) in snapshot.diagnostic_groups(None) {        let entry = &group.entries[group.primary_ix];        if entry.diagnostic.severity == DiagnosticSeverity::ERROR {            return true;        }    }    false} pub fn write_single_file_diagnostics(    output: &mut String,    path: Option<&Path>,    snapshot: &BufferSnapshot,) -> bool {    if let Some(path) = path {        if buffer_has_error_diagnostics(&snapshot) {            output.push_str("/diagnostics ");            output.push_str(&path.to_string_lossy());            return true;        }    }    false} fn collect_buffer_diagnostics(    text: &mut String,    sections: &mut Vec<(Range<usize>, PlaceholderType)>,    snapshot: BufferSnapshot,    include_warnings: bool,) {    for (_, group) in snapshot.diagnostic_groups(None) {        let entry = &group.entries[group.primary_ix];        collect_diagnostic(text, sections, entry, &snapshot, include_warnings)    }} fn collect_diagnostic(    text: &mut String,    sections: &mut Vec<(Range<usize>, PlaceholderType)>,    entry: &DiagnosticEntry<Anchor>,    snapshot: &BufferSnapshot,    include_warnings: bool,) {    const EXCERPT_EXPANSION_SIZE: u32 = 2;    const MAX_MESSAGE_LENGTH: usize = 2000;     let ty = match entry.diagnostic.severity {        DiagnosticSeverity::WARNING => {            if !include_warnings {                return;            }            DiagnosticType::Warning        }        DiagnosticSeverity::ERROR => DiagnosticType::Error,        _ => return,    };    let prev_len = text.len();     let range = entry.range.to_point(snapshot);    let diagnostic_row_number = range.start.row + 1;     let start_row = range.start.row.saturating_sub(EXCERPT_EXPANSION_SIZE);    let end_row = (range.end.row + EXCERPT_EXPANSION_SIZE).min(snapshot.max_point().row) + 1;    let excerpt_range =        Point::new(start_row, 0).to_offset(&snapshot)..Point::new(end_row, 0).to_offset(&snapshot);     text.push_str("```");    if let Some(language_name) = snapshot.language().map(|l| l.code_fence_block_name()) {        text.push_str(&language_name);    }    text.push('\n');     let mut buffer_text = String::new();    for chunk in snapshot.text_for_range(excerpt_range) {        buffer_text.push_str(chunk);    }     for (i, line) in buffer_text.lines().enumerate() {        let line_number = start_row + i as u32 + 1;        writeln!(text, "{}", line).unwrap();         if line_number == diagnostic_row_number {            text.push_str("//");            let prev_len = text.len();            write!(text, " {}: ", ty.as_str()).unwrap();            let padding = text.len() - prev_len;             let message = util::truncate(&entry.diagnostic.message, MAX_MESSAGE_LENGTH)                .replace('\n', format!("\n//{:padding$}", "").as_str());             writeln!(text, "{message}").unwrap();        }    }     writeln!(text, "```").unwrap();    sections.push((        prev_len..text.len().saturating_sub(1),        PlaceholderType::Diagnostic(ty, entry.diagnostic.message.clone()),    ))} #[derive(Clone)]pub enum PlaceholderType {    Root(DiagnosticSummary, Option<String>),    File(String),    Diagnostic(DiagnosticType, String),} #[derive(Copy, Clone)]pub enum DiagnosticType {    Warning,    Error,} impl DiagnosticType {    pub fn as_str(&self) -> &'static str {

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