use futures_util::FutureExt;

use helix_core::auto_pairs::AutoPairs;

use helix_core::chars::char_is_word;

use helix_core::doc_formatter::TextFormat;

use helix_core::encoding::Encoding;

use helix_core::snippets::{ActiveSnippet, SnippetRenderCtx};

use helix_core::text_annotations::{InlineAnnotation, Overlay};

use helix_lsp::util::lsp_pos_to_pos;

use helix_stdx::faccess::{copy_metadata, readonly};

use helix_vcs::{DiffHandle, DiffProviderRegistry};

use thiserror;

use ::parking_lot::Mutex;

use std::time::SystemTime;

use helix_core::{

encoding,

history::{History, State, UndoKind},

indent::{auto_detect_indent_style, IndentStyle},

line_ending::auto_detect_line_ending,

ChangeSet, Diagnostic, LineEnding, Range, Rope, RopeBuilder, Selection, Syntax, Transaction,

};

use crate::{

editor::Config,

events::{DocumentDidChange, SelectionDidChange},

view::ViewPosition,

DocumentId, Editor, Theme, View, ViewId,

};

const BUF_SIZE: usize = 8192;

const DEFAULT_INDENT: IndentStyle = IndentStyle::Tabs;

pub const DEFAULT_LANGUAGE_NAME: &str = "text";

#[derive(Debug, thiserror::Error)]

pub enum DocumentOpenError {

IrregularFile,

#[error(transparent)]

IoError(#[from] io::Error),

pub inlay_hints_oudated: bool,

path: Option<PathBuf>,

encoding: &'static encoding::Encoding,

has_bom: bool,

/// Current indent style.

pub indent_style: IndentStyle,

/// The document's default line ending.

pub line_ending: LineEnding,

pub focused_at: std::time::Instant,

pub readonly: bool,

}

/// Inlay hints for a single `(Document, View)` combo.

}

}

enum Encoder {

Utf16Be,

Utf16Le,

text: Rope,

encoding_with_bom_info: Option<(&'static Encoding, bool)>,

config: Arc<dyn DynAccess<Config>>,

) -> Self {

let (encoding, has_bom) = encoding_with_bom_info.unwrap_or((encoding::UTF_8, false));

let line_ending = config.load().default_line_ending.into();

id: DocumentId::default(),

active_snippet: None,

path: None,

encoding,

has_bom,

text,

inlay_hints_oudated: false,

view_data: Default::default(),

indent_style: DEFAULT_INDENT,

line_ending,

restore_cursor: false,

syntax: None,

focused_at: std::time::Instant::now(),

readonly: false,

jump_labels: HashMap::new(),

}

}

let line_ending: LineEnding = config.load().default_line_ending.into();

let text = Rope::from(line_ending.as_str());

}

// TODO: async fn?

/// overwritten with the `encoding` parameter.

pub fn open(

path: &Path,

config: Arc<dyn DynAccess<Config>>,

) -> Result<Self, DocumentOpenError> {

// If the path is not a regular file (e.g.: /dev/random) it should not be opened.

return Err(DocumentOpenError::IrregularFile);

}

// Open the file if it exists, otherwise assume it is a new file (and thus empty).

let (rope, encoding, has_bom) = if path.exists() {

let mut file = std::fs::File::open(path)?;

from_reader(&mut file, encoding)?

} else {

let encoding = encoding.unwrap_or(encoding::UTF_8);

(Rope::from(line_ending.as_str()), encoding, false)

};

// set the path and try detecting the language

doc.set_path(Some(path));

}

doc.detect_indent_and_line_ending();

Ok(doc)

/// The same as [`format`], but only returns formatting changes if auto-formatting

/// is configured.

if self.language_config()?.auto_format {

} else {

None

}

/// to format it nicely.

// We can't use anyhow::Result here since the output of the future has to be

// clonable to be used as shared future. So use a custom error type.

if let Some((fmt_cmd, fmt_args)) = self

.language_config()

.and_then(|c| c.formatter.as_ref())

))

})

{

use std::process::Stdio;

let text = self.text().clone();

let mut process = tokio::process::Command::new(&fmt_cmd);

process

.stdin(Stdio::piped())

.stdout(Stdio::piped())

.stderr(Stdio::piped());

command: fmt_cmd.to_string_lossy().into(),

error: e.kind(),

})?;

if !output.status.success() {

if !output.stderr.is_empty() {

} else if !output.stderr.is_empty() {

log::debug!(

"Formatter printed to stderr: {}",

);

}

)?;

let fut = async move {

Ok(helix_lsp::util::generate_transaction_from_edits(

&text,

edits,

};

let identifier = self.path().map(|_| self.identifier());

// mark changes up to now as saved

let current_rev = self.get_current_revision();

let doc_id = self.id();

let encoding_with_bom_info = (self.encoding, self.has_bom);

let last_saved_time = self.last_saved_time;

// Assume it is a hardlink to prevent data loss if the metadata cant be read (e.g. on certain Windows configurations)

let is_hardlink = helix_stdx::faccess::hardlink_count(&write_path).unwrap_or(2) > 1;

let path_ = write_path.clone();

// hacks: we use tempfile to handle the complex task of creating

// non clobbered temporary path for us we don't want

text: text.clone(),

};

if !language_server.is_initialized() {

continue;

}

}

}

}

/// Detect the programming language based on the file type.

}

/// Detect the programming language based on the file type.

pub fn detect_language_config(

&self,

}

/// Detect the indentation used in the file, or otherwise defaults to the language indentation

/// configured in `languages.toml`, with a fallback to tabs if it isn't specified. Line ending

/// is likewise auto-detected, and will remain unchanged if no line endings were detected.

pub fn detect_indent_and_line_ending(&mut self) {

self.line_ending = line_ending;

}

}

pub fn pickup_last_saved_time(&mut self) {

self.last_saved_time = match self.path() {

Some(path) => match path.metadata() {

pub fn set_path(&mut self, path: Option<&Path>) {

let path = path.map(helix_stdx::path::canonicalize);

// if parent doesn't exist we still want to open the document

// and error out when document is saved

self.path = path;

/// if it exists.

pub fn set_language(

&mut self,

) {

}

/// Set the programming language for the file if you know the language but don't have the

pub fn set_language_by_language_id(

&mut self,

language_id: &str,

) -> anyhow::Result<()> {

.ok_or_else(|| anyhow!("invalid language id: {}", language_id))?;

Ok(())

}

// update tree-sitter syntax tree

if let Some(syntax) = &mut self.syntax {

old_doc.slice(..),

self.text.slice(..),

transaction.changes(),

self.syntax = None;

}

}

true

});

// Update the inlay hint annotations' positions, helping ensure they are displayed in the proper place

let apply_inlay_hint_changes = |annotations: &mut Vec<InlineAnnotation>| {

});

}

true

}

let savepoint_idx = self

.savepoints

.iter()

.expect("Savepoint must belong to this document");

let savepoint_ref = self.savepoints.remove(savepoint_idx);

self.version

}

pub fn path_completion_enabled(&self) -> bool {

self.language_config()

.and_then(|lang_config| lang_config.path_completion)

})

}

pub fn supports_language_server(&self, id: LanguageServerId) -> bool {

self.language_servers().any(|l| l.id() == id)

}

/// The width that the tab character is rendered at

pub fn tab_width(&self) -> usize {

}

// The width (in spaces) of a level of indentation.

self.indent_style.indent_width(self.tab_width())

}

pub fn changes(&self) -> &ChangeSet {

&self.changes

}

self.view_data_mut(view_id).view_position = new_offset;

}

.as_deref()

}

self.relative_path()

}

// transact(Fn) ?

text: &Rope,

language_config: Option<&LanguageConfiguration>,

diagnostic: &helix_lsp::lsp::Diagnostic,

offset_encoding: helix_lsp::OffsetEncoding,

) -> Option<Diagnostic> {

use helix_core::diagnostic::{Range, Severity::*};

};

let ends_at_word =

Some(Diagnostic {

range: Range { start, end },

tags,

source: diagnostic.source.clone(),

data: diagnostic.data.clone(),

})

}

&mut self,

diagnostics: impl IntoIterator<Item = Diagnostic>,

unchanged_sources: &[String],

) {

if unchanged_sources.is_empty() {

} else {

self.diagnostics.retain(|d| {

return true;

}

});

}

self.diagnostics.extend(diagnostics);

}

/// clears diagnostics for a given language server id if set, otherwise all diagnostics are cleared

}

/// Get the document's auto pairs. If the document has a recognized

}

}

pub fn text_format(&self, mut viewport_width: u16, theme: Option<&Theme>) -> TextFormat {

let config = self.config.load();

let mut soft_wrap_at_text_width = self

.language_config()

.and_then(|config| {

viewport_width,

wrap_indicator: wrap_indicator.into_boxed_str(),

wrap_indicator_highlight: theme

soft_wrap_at_text_width,

}

}

pub fn reset_all_inlay_hints(&mut self) {

self.inlay_hints = Default::default();

}

}

#[derive(Debug, Default)]

BrokenStdin,

WaitForOutputFailed,

InvalidUtf8Output,

NonZeroExitStatus(Option<String>),

}

Self::BrokenStdin => write!(f, "Could not write to formatter stdin"),

Self::WaitForOutputFailed => write!(f, "Waiting for formatter output failed"),

Self::InvalidUtf8Output => write!(f, "Invalid UTF-8 formatter output"),

Self::NonZeroExitStatus(Some(output)) => write!(f, "Formatter error: {}", output),

Self::NonZeroExitStatus(None) => {

write!(f, "Formatter exited with non zero exit status")

text,

None,

Arc::new(ArcSwap::new(Arc::new(Config::default()))),

);

let view = ViewId::default();

doc.set_selection(view, Selection::single(0, 0));

text,

None,

Arc::new(ArcSwap::new(Arc::new(Config::default()))),

);

let view = ViewId::default();

doc.set_selection(view, Selection::single(5, 5));

#[test]

fn test_line_ending() {

assert_eq!(

helix_core::NATIVE_LINE_ENDING.as_str()

);

}