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helix-mirror/helix-term/src/commands.rs
Jason Rodney Hansen c9641fcced Add Increment trait
2021-12-05 16:22:58 +08:00

5828 lines
188 KiB
Rust

use helix_core::{
comment, coords_at_pos, find_first_non_whitespace_char, find_root, graphemes,
history::UndoKind,
increment::date::DateIncrementor,
increment::{number::NumberIncrementor, Increment},
indent,
indent::IndentStyle,
line_ending::{get_line_ending_of_str, line_end_char_index, str_is_line_ending},
match_brackets,
movement::{self, Direction},
object, pos_at_coords,
regex::{self, Regex, RegexBuilder},
search, selection, surround, textobject,
unicode::width::UnicodeWidthChar,
LineEnding, Position, Range, Rope, RopeGraphemes, RopeSlice, Selection, SmallVec, Tendril,
Transaction,
};
use helix_view::{
clipboard::ClipboardType,
document::{Mode, SCRATCH_BUFFER_NAME},
editor::{Action, Motion},
input::KeyEvent,
keyboard::KeyCode,
view::View,
Document, DocumentId, Editor, ViewId,
};
use anyhow::{anyhow, bail, ensure, Context as _};
use helix_lsp::{
block_on, lsp,
util::{lsp_pos_to_pos, lsp_range_to_range, pos_to_lsp_pos, range_to_lsp_range},
OffsetEncoding,
};
use insert::*;
use movement::Movement;
use crate::{
compositor::{self, Component, Compositor},
ui::{self, FilePicker, Picker, Popup, Prompt, PromptEvent},
};
use crate::job::{self, Job, Jobs};
use futures_util::{FutureExt, StreamExt};
use std::num::NonZeroUsize;
use std::{fmt, future::Future};
use std::{
borrow::Cow,
path::{Path, PathBuf},
};
use once_cell::sync::Lazy;
use serde::de::{self, Deserialize, Deserializer};
use grep_regex::RegexMatcherBuilder;
use grep_searcher::{sinks, BinaryDetection, SearcherBuilder};
use ignore::{DirEntry, WalkBuilder, WalkState};
use tokio_stream::wrappers::UnboundedReceiverStream;
pub struct Context<'a> {
pub register: Option<char>,
pub count: Option<NonZeroUsize>,
pub editor: &'a mut Editor,
pub callback: Option<crate::compositor::Callback>,
pub on_next_key_callback: Option<Box<dyn FnOnce(&mut Context, KeyEvent)>>,
pub jobs: &'a mut Jobs,
}
impl<'a> Context<'a> {
/// Push a new component onto the compositor.
pub fn push_layer(&mut self, component: Box<dyn Component>) {
self.callback = Some(Box::new(|compositor: &mut Compositor| {
compositor.push(component)
}));
}
#[inline]
pub fn on_next_key(
&mut self,
on_next_key_callback: impl FnOnce(&mut Context, KeyEvent) + 'static,
) {
self.on_next_key_callback = Some(Box::new(on_next_key_callback));
}
#[inline]
pub fn callback<T, F>(
&mut self,
call: impl Future<Output = helix_lsp::Result<serde_json::Value>> + 'static + Send,
callback: F,
) where
T: for<'de> serde::Deserialize<'de> + Send + 'static,
F: FnOnce(&mut Editor, &mut Compositor, T) + Send + 'static,
{
let callback = Box::pin(async move {
let json = call.await?;
let response = serde_json::from_value(json)?;
let call: job::Callback =
Box::new(move |editor: &mut Editor, compositor: &mut Compositor| {
callback(editor, compositor, response)
});
Ok(call)
});
self.jobs.callback(callback);
}
/// Returns 1 if no explicit count was provided
#[inline]
pub fn count(&self) -> usize {
self.count.map_or(1, |v| v.get())
}
}
enum Align {
Top,
Center,
Bottom,
}
fn align_view(doc: &Document, view: &mut View, align: Align) {
let pos = doc
.selection(view.id)
.primary()
.cursor(doc.text().slice(..));
let line = doc.text().char_to_line(pos);
let height = view.inner_area().height as usize;
let relative = match align {
Align::Center => height / 2,
Align::Top => 0,
Align::Bottom => height,
};
view.offset.row = line.saturating_sub(relative);
}
/// A MappableCommand is either a static command like "jump_view_up" or a Typable command like
/// :format. It causes a side-effect on the state (usually by creating and applying a transaction).
/// Both of these types of commands can be mapped with keybindings in the config.toml.
#[derive(Clone)]
pub enum MappableCommand {
Typable {
name: String,
args: Vec<String>,
doc: String,
},
Static {
name: &'static str,
fun: fn(cx: &mut Context),
doc: &'static str,
},
}
macro_rules! static_commands {
( $($name:ident, $doc:literal,)* ) => {
$(
#[allow(non_upper_case_globals)]
pub const $name: Self = Self::Static {
name: stringify!($name),
fun: $name,
doc: $doc
};
)*
pub const STATIC_COMMAND_LIST: &'static [Self] = &[
$( Self::$name, )*
];
}
}
impl MappableCommand {
pub fn execute(&self, cx: &mut Context) {
match &self {
MappableCommand::Typable { name, args, doc: _ } => {
let args: Vec<&str> = args.iter().map(|arg| arg.as_str()).collect();
if let Some(command) = cmd::TYPABLE_COMMAND_MAP.get(name.as_str()) {
let mut cx = compositor::Context {
editor: cx.editor,
jobs: cx.jobs,
scroll: None,
};
if let Err(e) = (command.fun)(&mut cx, &args, PromptEvent::Validate) {
cx.editor.set_error(format!("{}", e));
}
}
}
MappableCommand::Static { fun, .. } => (fun)(cx),
}
}
pub fn name(&self) -> &str {
match &self {
MappableCommand::Typable { name, .. } => name,
MappableCommand::Static { name, .. } => name,
}
}
pub fn doc(&self) -> &str {
match &self {
MappableCommand::Typable { doc, .. } => doc,
MappableCommand::Static { doc, .. } => doc,
}
}
#[rustfmt::skip]
static_commands!(
no_op, "Do nothing",
move_char_left, "Move left",
move_char_right, "Move right",
move_line_up, "Move up",
move_line_down, "Move down",
extend_char_left, "Extend left",
extend_char_right, "Extend right",
extend_line_up, "Extend up",
extend_line_down, "Extend down",
copy_selection_on_next_line, "Copy selection on next line",
copy_selection_on_prev_line, "Copy selection on previous line",
move_next_word_start, "Move to beginning of next word",
move_prev_word_start, "Move to beginning of previous word",
move_prev_word_end, "Move to end of previous word",
move_next_word_end, "Move to end of next word",
move_next_long_word_start, "Move to beginning of next long word",
move_prev_long_word_start, "Move to beginning of previous long word",
move_next_long_word_end, "Move to end of next long word",
extend_next_word_start, "Extend to beginning of next word",
extend_prev_word_start, "Extend to beginning of previous word",
extend_next_long_word_start, "Extend to beginning of next long word",
extend_prev_long_word_start, "Extend to beginning of previous long word",
extend_next_long_word_end, "Extend to end of next long word",
extend_next_word_end, "Extend to end of next word",
find_till_char, "Move till next occurance of char",
find_next_char, "Move to next occurance of char",
extend_till_char, "Extend till next occurance of char",
extend_next_char, "Extend to next occurance of char",
till_prev_char, "Move till previous occurance of char",
find_prev_char, "Move to previous occurance of char",
extend_till_prev_char, "Extend till previous occurance of char",
extend_prev_char, "Extend to previous occurance of char",
repeat_last_motion, "repeat last motion(extend_next_char, extend_till_char, find_next_char, find_till_char...)",
replace, "Replace with new char",
switch_case, "Switch (toggle) case",
switch_to_uppercase, "Switch to uppercase",
switch_to_lowercase, "Switch to lowercase",
page_up, "Move page up",
page_down, "Move page down",
half_page_up, "Move half page up",
half_page_down, "Move half page down",
select_all, "Select whole document",
select_regex, "Select all regex matches inside selections",
split_selection, "Split selection into subselections on regex matches",
split_selection_on_newline, "Split selection on newlines",
search, "Search for regex pattern",
rsearch, "Reverse search for regex pattern",
search_next, "Select next search match",
search_prev, "Select previous search match",
extend_search_next, "Add next search match to selection",
extend_search_prev, "Add previous search match to selection",
search_selection, "Use current selection as search pattern",
global_search, "Global Search in workspace folder",
extend_line, "Select current line, if already selected, extend to next line",
extend_to_line_bounds, "Extend selection to line bounds (line-wise selection)",
delete_selection, "Delete selection",
delete_selection_noyank, "Delete selection, without yanking",
change_selection, "Change selection (delete and enter insert mode)",
change_selection_noyank, "Change selection (delete and enter insert mode, without yanking)",
collapse_selection, "Collapse selection onto a single cursor",
flip_selections, "Flip selection cursor and anchor",
insert_mode, "Insert before selection",
append_mode, "Insert after selection (append)",
command_mode, "Enter command mode",
file_picker, "Open file picker",
code_action, "Perform code action",
buffer_picker, "Open buffer picker",
symbol_picker, "Open symbol picker",
workspace_symbol_picker, "Open workspace symbol picker",
last_picker, "Open last picker",
prepend_to_line, "Insert at start of line",
append_to_line, "Insert at end of line",
open_below, "Open new line below selection",
open_above, "Open new line above selection",
normal_mode, "Enter normal mode",
select_mode, "Enter selection extend mode",
exit_select_mode, "Exit selection mode",
goto_definition, "Goto definition",
add_newline_above, "Add newline above",
add_newline_below, "Add newline below",
goto_type_definition, "Goto type definition",
goto_implementation, "Goto implementation",
goto_file_start, "Goto file start/line",
goto_file_end, "Goto file end",
goto_file, "Goto files in the selection",
goto_file_hsplit, "Goto files in the selection in horizontal splits",
goto_file_vsplit, "Goto files in the selection in vertical splits",
goto_reference, "Goto references",
goto_window_top, "Goto window top",
goto_window_center, "Goto window center",
goto_window_bottom, "Goto window bottom",
goto_last_accessed_file, "Goto last accessed file",
goto_last_modified_file, "Goto last modified file",
goto_last_modification, "Goto last modification",
goto_line, "Goto line",
goto_last_line, "Goto last line",
goto_first_diag, "Goto first diagnostic",
goto_last_diag, "Goto last diagnostic",
goto_next_diag, "Goto next diagnostic",
goto_prev_diag, "Goto previous diagnostic",
goto_line_start, "Goto line start",
goto_line_end, "Goto line end",
goto_next_buffer, "Goto next buffer",
goto_previous_buffer, "Goto previous buffer",
// TODO: different description ?
goto_line_end_newline, "Goto line end",
goto_first_nonwhitespace, "Goto first non-blank in line",
trim_selections, "Trim whitespace from selections",
extend_to_line_start, "Extend to line start",
extend_to_line_end, "Extend to line end",
extend_to_line_end_newline, "Extend to line end",
signature_help, "Show signature help",
insert_tab, "Insert tab char",
insert_newline, "Insert newline char",
delete_char_backward, "Delete previous char",
delete_char_forward, "Delete next char",
delete_word_backward, "Delete previous word",
delete_word_forward, "Delete next word",
kill_to_line_start, "Delete content till the start of the line",
kill_to_line_end, "Delete content till the end of the line",
undo, "Undo change",
redo, "Redo change",
earlier, "Move backward in history",
later, "Move forward in history",
yank, "Yank selection",
yank_joined_to_clipboard, "Join and yank selections to clipboard",
yank_main_selection_to_clipboard, "Yank main selection to clipboard",
yank_joined_to_primary_clipboard, "Join and yank selections to primary clipboard",
yank_main_selection_to_primary_clipboard, "Yank main selection to primary clipboard",
replace_with_yanked, "Replace with yanked text",
replace_selections_with_clipboard, "Replace selections by clipboard content",
replace_selections_with_primary_clipboard, "Replace selections by primary clipboard content",
paste_after, "Paste after selection",
paste_before, "Paste before selection",
paste_clipboard_after, "Paste clipboard after selections",
paste_clipboard_before, "Paste clipboard before selections",
paste_primary_clipboard_after, "Paste primary clipboard after selections",
paste_primary_clipboard_before, "Paste primary clipboard before selections",
indent, "Indent selection",
unindent, "Unindent selection",
format_selections, "Format selection",
join_selections, "Join lines inside selection",
keep_selections, "Keep selections matching regex",
remove_selections, "Remove selections matching regex",
align_selections, "Align selections in column",
keep_primary_selection, "Keep primary selection",
remove_primary_selection, "Remove primary selection",
completion, "Invoke completion popup",
hover, "Show docs for item under cursor",
toggle_comments, "Comment/uncomment selections",
rotate_selections_forward, "Rotate selections forward",
rotate_selections_backward, "Rotate selections backward",
rotate_selection_contents_forward, "Rotate selection contents forward",
rotate_selection_contents_backward, "Rotate selections contents backward",
expand_selection, "Expand selection to parent syntax node",
jump_forward, "Jump forward on jumplist",
jump_backward, "Jump backward on jumplist",
jump_view_right, "Jump to the split to the right",
jump_view_left, "Jump to the split to the left",
jump_view_up, "Jump to the split above",
jump_view_down, "Jump to the split below",
rotate_view, "Goto next window",
hsplit, "Horizontal bottom split",
vsplit, "Vertical right split",
wclose, "Close window",
wonly, "Current window only",
select_register, "Select register",
insert_register, "Insert register",
align_view_middle, "Align view middle",
align_view_top, "Align view top",
align_view_center, "Align view center",
align_view_bottom, "Align view bottom",
scroll_up, "Scroll view up",
scroll_down, "Scroll view down",
match_brackets, "Goto matching bracket",
surround_add, "Surround add",
surround_replace, "Surround replace",
surround_delete, "Surround delete",
select_textobject_around, "Select around object",
select_textobject_inner, "Select inside object",
shell_pipe, "Pipe selections through shell command",
shell_pipe_to, "Pipe selections into shell command, ignoring command output",
shell_insert_output, "Insert output of shell command before each selection",
shell_append_output, "Append output of shell command after each selection",
shell_keep_pipe, "Filter selections with shell predicate",
suspend, "Suspend",
rename_symbol, "Rename symbol",
increment, "Increment",
decrement, "Decrement",
);
}
impl fmt::Debug for MappableCommand {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_tuple("MappableCommand")
.field(&self.name())
.finish()
}
}
impl fmt::Display for MappableCommand {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str(self.name())
}
}
impl std::str::FromStr for MappableCommand {
type Err = anyhow::Error;
fn from_str(s: &str) -> Result<Self, Self::Err> {
if let Some(suffix) = s.strip_prefix(':') {
let mut typable_command = suffix.split(' ').into_iter().map(|arg| arg.trim());
let name = typable_command
.next()
.ok_or_else(|| anyhow!("Expected typable command name"))?;
let args = typable_command
.map(|s| s.to_owned())
.collect::<Vec<String>>();
cmd::TYPABLE_COMMAND_MAP
.get(name)
.map(|cmd| MappableCommand::Typable {
name: cmd.name.to_owned(),
doc: format!(":{} {:?}", cmd.name, args),
args,
})
.ok_or_else(|| anyhow!("No TypableCommand named '{}'", s))
} else {
MappableCommand::STATIC_COMMAND_LIST
.iter()
.cloned()
.find(|cmd| cmd.name() == s)
.ok_or_else(|| anyhow!("No command named '{}'", s))
}
}
}
impl<'de> Deserialize<'de> for MappableCommand {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
let s = String::deserialize(deserializer)?;
s.parse().map_err(de::Error::custom)
}
}
impl PartialEq for MappableCommand {
fn eq(&self, other: &Self) -> bool {
match (self, other) {
(
MappableCommand::Typable {
name: first_name, ..
},
MappableCommand::Typable {
name: second_name, ..
},
) => first_name == second_name,
(
MappableCommand::Static {
name: first_name, ..
},
MappableCommand::Static {
name: second_name, ..
},
) => first_name == second_name,
_ => false,
}
}
}
fn no_op(_cx: &mut Context) {}
fn move_impl<F>(cx: &mut Context, move_fn: F, dir: Direction, behaviour: Movement)
where
F: Fn(RopeSlice, Range, Direction, usize, Movement) -> Range,
{
let count = cx.count();
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc
.selection(view.id)
.clone()
.transform(|range| move_fn(text, range, dir, count, behaviour));
doc.set_selection(view.id, selection);
}
use helix_core::movement::{move_horizontally, move_vertically};
fn move_char_left(cx: &mut Context) {
move_impl(cx, move_horizontally, Direction::Backward, Movement::Move)
}
fn move_char_right(cx: &mut Context) {
move_impl(cx, move_horizontally, Direction::Forward, Movement::Move)
}
fn move_line_up(cx: &mut Context) {
move_impl(cx, move_vertically, Direction::Backward, Movement::Move)
}
fn move_line_down(cx: &mut Context) {
move_impl(cx, move_vertically, Direction::Forward, Movement::Move)
}
fn extend_char_left(cx: &mut Context) {
move_impl(cx, move_horizontally, Direction::Backward, Movement::Extend)
}
fn extend_char_right(cx: &mut Context) {
move_impl(cx, move_horizontally, Direction::Forward, Movement::Extend)
}
fn extend_line_up(cx: &mut Context) {
move_impl(cx, move_vertically, Direction::Backward, Movement::Extend)
}
fn extend_line_down(cx: &mut Context) {
move_impl(cx, move_vertically, Direction::Forward, Movement::Extend)
}
fn goto_line_end_impl(view: &mut View, doc: &mut Document, movement: Movement) {
let text = doc.text().slice(..);
let selection = doc.selection(view.id).clone().transform(|range| {
let line = range.cursor_line(text);
let line_start = text.line_to_char(line);
let pos = graphemes::prev_grapheme_boundary(text, line_end_char_index(&text, line))
.max(line_start);
range.put_cursor(text, pos, movement == Movement::Extend)
});
doc.set_selection(view.id, selection);
}
fn goto_line_end(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
goto_line_end_impl(
view,
doc,
if doc.mode == Mode::Select {
Movement::Extend
} else {
Movement::Move
},
)
}
fn extend_to_line_end(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
goto_line_end_impl(view, doc, Movement::Extend)
}
fn goto_line_end_newline_impl(view: &mut View, doc: &mut Document, movement: Movement) {
let text = doc.text().slice(..);
let selection = doc.selection(view.id).clone().transform(|range| {
let line = range.cursor_line(text);
let pos = line_end_char_index(&text, line);
range.put_cursor(text, pos, movement == Movement::Extend)
});
doc.set_selection(view.id, selection);
}
fn goto_line_end_newline(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
goto_line_end_newline_impl(
view,
doc,
if doc.mode == Mode::Select {
Movement::Extend
} else {
Movement::Move
},
)
}
fn extend_to_line_end_newline(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
goto_line_end_newline_impl(view, doc, Movement::Extend)
}
fn goto_line_start_impl(view: &mut View, doc: &mut Document, movement: Movement) {
let text = doc.text().slice(..);
let selection = doc.selection(view.id).clone().transform(|range| {
let line = range.cursor_line(text);
// adjust to start of the line
let pos = text.line_to_char(line);
range.put_cursor(text, pos, movement == Movement::Extend)
});
doc.set_selection(view.id, selection);
}
fn goto_line_start(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
goto_line_start_impl(
view,
doc,
if doc.mode == Mode::Select {
Movement::Extend
} else {
Movement::Move
},
)
}
fn goto_next_buffer(cx: &mut Context) {
goto_buffer(cx, Direction::Forward);
}
fn goto_previous_buffer(cx: &mut Context) {
goto_buffer(cx, Direction::Backward);
}
fn goto_buffer(cx: &mut Context, direction: Direction) {
let current = view!(cx.editor).doc;
let id = match direction {
Direction::Forward => {
let iter = cx.editor.documents.keys();
let mut iter = iter.skip_while(|id| *id != &current);
iter.next(); // skip current item
iter.next().or_else(|| cx.editor.documents.keys().next())
}
Direction::Backward => {
let iter = cx.editor.documents.keys();
let mut iter = iter.rev().skip_while(|id| *id != &current);
iter.next(); // skip current item
iter.next()
.or_else(|| cx.editor.documents.keys().rev().next())
}
}
.unwrap();
let id = *id;
cx.editor.switch(id, Action::Replace);
}
fn extend_to_line_start(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
goto_line_start_impl(view, doc, Movement::Extend)
}
fn kill_to_line_start(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id).clone().transform(|range| {
let line = range.cursor_line(text);
range.put_cursor(text, text.line_to_char(line), true)
});
delete_selection_insert_mode(doc, view, &selection);
}
fn kill_to_line_end(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id).clone().transform(|range| {
let line = range.cursor_line(text);
let pos = line_end_char_index(&text, line);
range.put_cursor(text, pos, true)
});
delete_selection_insert_mode(doc, view, &selection);
}
fn goto_first_nonwhitespace(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id).clone().transform(|range| {
let line = range.cursor_line(text);
if let Some(pos) = find_first_non_whitespace_char(text.line(line)) {
let pos = pos + text.line_to_char(line);
range.put_cursor(text, pos, doc.mode == Mode::Select)
} else {
range
}
});
doc.set_selection(view.id, selection);
}
fn trim_selections(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let ranges: SmallVec<[Range; 1]> = doc
.selection(view.id)
.iter()
.filter_map(|range| {
if range.is_empty() || range.fragment(text).chars().all(|ch| ch.is_whitespace()) {
return None;
}
let mut start = range.from();
let mut end = range.to();
start = movement::skip_while(text, start, |x| x.is_whitespace()).unwrap_or(start);
end = movement::backwards_skip_while(text, end, |x| x.is_whitespace()).unwrap_or(end);
if range.anchor < range.head {
Some(Range::new(start, end))
} else {
Some(Range::new(end, start))
}
})
.collect();
if !ranges.is_empty() {
let primary = doc.selection(view.id).primary();
let idx = ranges
.iter()
.position(|range| range.overlaps(&primary))
.unwrap_or(ranges.len() - 1);
doc.set_selection(view.id, Selection::new(ranges, idx));
} else {
collapse_selection(cx);
keep_primary_selection(cx);
};
}
// align text in selection
fn align_selections(cx: &mut Context) {
let align_style = cx.count();
if align_style > 3 {
cx.editor.set_error(
"align only accept 1,2,3 as count to set left/center/right align".to_string(),
);
return;
}
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id);
let mut column_widths = vec![];
let mut last_line = text.len_lines();
let mut column = 0;
// first of all, we need compute all column's width, let use max width of the selections in a column
for sel in selection {
let (l1, l2) = sel.line_range(text);
if l1 != l2 {
cx.editor
.set_error("align cannot work with multi line selections".to_string());
return;
}
// if the selection is not in the same line with last selection, we set the column to 0
column = if l1 != last_line { 0 } else { column + 1 };
last_line = l1;
if column < column_widths.len() {
if sel.to() - sel.from() > column_widths[column] {
column_widths[column] = sel.to() - sel.from();
}
} else {
// a new column, current selection width is the temp width of the column
column_widths.push(sel.to() - sel.from());
}
}
last_line = text.len_lines();
// once we get the with of each column, we transform each selection with to it's column width based on the align style
let transaction = Transaction::change_by_selection(doc.text(), selection, |range| {
let l = range.cursor_line(text);
column = if l != last_line { 0 } else { column + 1 };
last_line = l;
(
range.from(),
range.to(),
Some(
align_fragment_to_width(&range.fragment(text), column_widths[column], align_style)
.into(),
),
)
});
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
fn align_fragment_to_width(fragment: &str, width: usize, align_style: usize) -> String {
let trimed = fragment.trim_matches(|c| c == ' ');
let mut s = " ".repeat(width - trimed.chars().count());
match align_style {
1 => s.insert_str(0, trimed), // left align
2 => s.insert_str(s.len() / 2, trimed), // center align
3 => s.push_str(trimed), // right align
n => unimplemented!("{}", n),
}
s
}
fn goto_window(cx: &mut Context, align: Align) {
let count = cx.count() - 1;
let (view, doc) = current!(cx.editor);
let height = view.inner_area().height as usize;
// respect user given count if any
// - 1 so we have at least one gap in the middle.
// a height of 6 with padding of 3 on each side will keep shifting the view back and forth
// as we type
let scrolloff = cx.editor.config.scrolloff.min(height.saturating_sub(1) / 2);
let last_line = view.last_line(doc);
let line = match align {
Align::Top => (view.offset.row + scrolloff + count),
Align::Center => (view.offset.row + ((last_line - view.offset.row) / 2)),
Align::Bottom => last_line.saturating_sub(scrolloff + count),
}
.max(view.offset.row + scrolloff)
.min(last_line.saturating_sub(scrolloff));
let pos = doc.text().line_to_char(line);
doc.set_selection(view.id, Selection::point(pos));
}
fn goto_window_top(cx: &mut Context) {
goto_window(cx, Align::Top)
}
fn goto_window_center(cx: &mut Context) {
goto_window(cx, Align::Center)
}
fn goto_window_bottom(cx: &mut Context) {
goto_window(cx, Align::Bottom)
}
fn move_word_impl<F>(cx: &mut Context, move_fn: F)
where
F: Fn(RopeSlice, Range, usize) -> Range,
{
let count = cx.count();
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc
.selection(view.id)
.clone()
.transform(|range| move_fn(text, range, count));
doc.set_selection(view.id, selection);
}
fn move_next_word_start(cx: &mut Context) {
move_word_impl(cx, movement::move_next_word_start)
}
fn move_prev_word_start(cx: &mut Context) {
move_word_impl(cx, movement::move_prev_word_start)
}
fn move_prev_word_end(cx: &mut Context) {
move_word_impl(cx, movement::move_prev_word_end)
}
fn move_next_word_end(cx: &mut Context) {
move_word_impl(cx, movement::move_next_word_end)
}
fn move_next_long_word_start(cx: &mut Context) {
move_word_impl(cx, movement::move_next_long_word_start)
}
fn move_prev_long_word_start(cx: &mut Context) {
move_word_impl(cx, movement::move_prev_long_word_start)
}
fn move_next_long_word_end(cx: &mut Context) {
move_word_impl(cx, movement::move_next_long_word_end)
}
fn goto_file_start(cx: &mut Context) {
if cx.count.is_some() {
goto_line(cx);
} else {
push_jump(cx.editor);
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc
.selection(view.id)
.clone()
.transform(|range| range.put_cursor(text, 0, doc.mode == Mode::Select));
doc.set_selection(view.id, selection);
}
}
fn goto_file_end(cx: &mut Context) {
push_jump(cx.editor);
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let pos = doc.text().len_chars();
let selection = doc
.selection(view.id)
.clone()
.transform(|range| range.put_cursor(text, pos, doc.mode == Mode::Select));
doc.set_selection(view.id, selection);
}
fn goto_file(cx: &mut Context) {
goto_file_impl(cx, Action::Replace);
}
fn goto_file_hsplit(cx: &mut Context) {
goto_file_impl(cx, Action::HorizontalSplit);
}
fn goto_file_vsplit(cx: &mut Context) {
goto_file_impl(cx, Action::VerticalSplit);
}
fn goto_file_impl(cx: &mut Context, action: Action) {
let (view, doc) = current_ref!(cx.editor);
let text = doc.text();
let selections = doc.selection(view.id);
let mut paths: Vec<_> = selections
.iter()
.map(|r| text.slice(r.from()..r.to()).to_string())
.collect();
let primary = selections.primary();
if selections.len() == 1 && primary.to() - primary.from() == 1 {
let current_word = movement::move_next_long_word_start(
text.slice(..),
movement::move_prev_long_word_start(text.slice(..), primary, 1),
1,
);
paths.clear();
paths.push(
text.slice(current_word.from()..current_word.to())
.to_string(),
);
}
for sel in paths {
let p = sel.trim();
if !p.is_empty() {
if let Err(e) = cx.editor.open(PathBuf::from(p), action) {
cx.editor.set_error(format!("Open file failed: {:?}", e));
}
}
}
}
fn extend_word_impl<F>(cx: &mut Context, extend_fn: F)
where
F: Fn(RopeSlice, Range, usize) -> Range,
{
let count = cx.count();
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id).clone().transform(|range| {
let word = extend_fn(text, range, count);
let pos = word.cursor(text);
range.put_cursor(text, pos, true)
});
doc.set_selection(view.id, selection);
}
fn extend_next_word_start(cx: &mut Context) {
extend_word_impl(cx, movement::move_next_word_start)
}
fn extend_prev_word_start(cx: &mut Context) {
extend_word_impl(cx, movement::move_prev_word_start)
}
fn extend_next_word_end(cx: &mut Context) {
extend_word_impl(cx, movement::move_next_word_end)
}
fn extend_next_long_word_start(cx: &mut Context) {
extend_word_impl(cx, movement::move_next_long_word_start)
}
fn extend_prev_long_word_start(cx: &mut Context) {
extend_word_impl(cx, movement::move_prev_long_word_start)
}
fn extend_next_long_word_end(cx: &mut Context) {
extend_word_impl(cx, movement::move_next_long_word_end)
}
fn will_find_char<F>(cx: &mut Context, search_fn: F, inclusive: bool, extend: bool)
where
F: Fn(RopeSlice, char, usize, usize, bool) -> Option<usize> + 'static,
{
// TODO: count is reset to 1 before next key so we move it into the closure here.
// Would be nice to carry over.
let count = cx.count();
// need to wait for next key
// TODO: should this be done by grapheme rather than char? For example,
// we can't properly handle the line-ending CRLF case here in terms of char.
cx.on_next_key(move |cx, event| {
let ch = match event {
KeyEvent {
code: KeyCode::Enter,
..
} =>
// TODO: this isn't quite correct when CRLF is involved.
// This hack will work in most cases, since documents don't
// usually mix line endings. But we should fix it eventually
// anyway.
{
doc!(cx.editor).line_ending.as_str().chars().next().unwrap()
}
KeyEvent {
code: KeyCode::Char(ch),
..
} => ch,
_ => return,
};
find_char_impl(cx.editor, &search_fn, inclusive, extend, ch, count);
cx.editor.last_motion = Some(Motion(Box::new(move |editor: &mut Editor| {
find_char_impl(editor, &search_fn, inclusive, true, ch, 1);
})));
})
}
//
#[inline]
fn find_char_impl<F>(
editor: &mut Editor,
search_fn: &F,
inclusive: bool,
extend: bool,
ch: char,
count: usize,
) where
F: Fn(RopeSlice, char, usize, usize, bool) -> Option<usize> + 'static,
{
let (view, doc) = current!(editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id).clone().transform(|range| {
// TODO: use `Range::cursor()` here instead. However, that works in terms of
// graphemes, whereas this function doesn't yet. So we're doing the same logic
// here, but just in terms of chars instead.
let search_start_pos = if range.anchor < range.head {
range.head - 1
} else {
range.head
};
search_fn(text, ch, search_start_pos, count, inclusive).map_or(range, |pos| {
if extend {
range.put_cursor(text, pos, true)
} else {
Range::point(range.cursor(text)).put_cursor(text, pos, true)
}
})
});
doc.set_selection(view.id, selection);
}
fn find_next_char_impl(
text: RopeSlice,
ch: char,
pos: usize,
n: usize,
inclusive: bool,
) -> Option<usize> {
let pos = (pos + 1).min(text.len_chars());
if inclusive {
search::find_nth_next(text, ch, pos, n)
} else {
let n = match text.get_char(pos) {
Some(next_ch) if next_ch == ch => n + 1,
_ => n,
};
search::find_nth_next(text, ch, pos, n).map(|n| n.saturating_sub(1))
}
}
fn find_prev_char_impl(
text: RopeSlice,
ch: char,
pos: usize,
n: usize,
inclusive: bool,
) -> Option<usize> {
if inclusive {
search::find_nth_prev(text, ch, pos, n)
} else {
let n = match text.get_char(pos.saturating_sub(1)) {
Some(next_ch) if next_ch == ch => n + 1,
_ => n,
};
search::find_nth_prev(text, ch, pos, n).map(|n| (n + 1).min(text.len_chars()))
}
}
fn find_till_char(cx: &mut Context) {
will_find_char(cx, find_next_char_impl, false, false)
}
fn find_next_char(cx: &mut Context) {
will_find_char(cx, find_next_char_impl, true, false)
}
fn extend_till_char(cx: &mut Context) {
will_find_char(cx, find_next_char_impl, false, true)
}
fn extend_next_char(cx: &mut Context) {
will_find_char(cx, find_next_char_impl, true, true)
}
fn till_prev_char(cx: &mut Context) {
will_find_char(cx, find_prev_char_impl, false, false)
}
fn find_prev_char(cx: &mut Context) {
will_find_char(cx, find_prev_char_impl, true, false)
}
fn extend_till_prev_char(cx: &mut Context) {
will_find_char(cx, find_prev_char_impl, false, true)
}
fn extend_prev_char(cx: &mut Context) {
will_find_char(cx, find_prev_char_impl, true, true)
}
fn repeat_last_motion(cx: &mut Context) {
let last_motion = cx.editor.last_motion.take();
if let Some(m) = &last_motion {
m.run(cx.editor);
cx.editor.last_motion = last_motion;
}
}
fn replace(cx: &mut Context) {
let mut buf = [0u8; 4]; // To hold utf8 encoded char.
// need to wait for next key
cx.on_next_key(move |cx, event| {
let (view, doc) = current!(cx.editor);
let ch = match event {
KeyEvent {
code: KeyCode::Char(ch),
..
} => Some(&ch.encode_utf8(&mut buf[..])[..]),
KeyEvent {
code: KeyCode::Enter,
..
} => Some(doc.line_ending.as_str()),
_ => None,
};
let selection = doc.selection(view.id);
if let Some(ch) = ch {
let transaction = Transaction::change_by_selection(doc.text(), selection, |range| {
if !range.is_empty() {
let text: String =
RopeGraphemes::new(doc.text().slice(range.from()..range.to()))
.map(|g| {
let cow: Cow<str> = g.into();
if str_is_line_ending(&cow) {
cow
} else {
ch.into()
}
})
.collect();
(range.from(), range.to(), Some(text.into()))
} else {
// No change.
(range.from(), range.to(), None)
}
});
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
})
}
fn switch_case_impl<F>(cx: &mut Context, change_fn: F)
where
F: Fn(Cow<str>) -> Tendril,
{
let (view, doc) = current!(cx.editor);
let selection = doc.selection(view.id);
let transaction = Transaction::change_by_selection(doc.text(), selection, |range| {
let text: Tendril = change_fn(range.fragment(doc.text().slice(..)));
(range.from(), range.to(), Some(text))
});
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
fn switch_case(cx: &mut Context) {
switch_case_impl(cx, |string| {
string
.chars()
.flat_map(|ch| {
if ch.is_lowercase() {
ch.to_uppercase().collect()
} else if ch.is_uppercase() {
ch.to_lowercase().collect()
} else {
vec![ch]
}
})
.collect()
});
}
fn switch_to_uppercase(cx: &mut Context) {
switch_case_impl(cx, |string| string.to_uppercase().into());
}
fn switch_to_lowercase(cx: &mut Context) {
switch_case_impl(cx, |string| string.to_lowercase().into());
}
pub fn scroll(cx: &mut Context, offset: usize, direction: Direction) {
use Direction::*;
let (view, doc) = current!(cx.editor);
let range = doc.selection(view.id).primary();
let text = doc.text().slice(..);
let cursor = coords_at_pos(text, range.cursor(text));
let doc_last_line = doc.text().len_lines().saturating_sub(1);
let last_line = view.last_line(doc);
if direction == Backward && view.offset.row == 0
|| direction == Forward && last_line == doc_last_line
{
return;
}
let height = view.inner_area().height;
let scrolloff = cx.editor.config.scrolloff.min(height as usize / 2);
view.offset.row = match direction {
Forward => view.offset.row + offset,
Backward => view.offset.row.saturating_sub(offset),
}
.min(doc_last_line);
// recalculate last line
let last_line = view.last_line(doc);
// clamp into viewport
let line = cursor
.row
.max(view.offset.row + scrolloff)
.min(last_line.saturating_sub(scrolloff));
let head = pos_at_coords(text, Position::new(line, cursor.col), true); // this func will properly truncate to line end
let anchor = if doc.mode == Mode::Select {
range.anchor
} else {
head
};
// TODO: only manipulate main selection
doc.set_selection(view.id, Selection::single(anchor, head));
}
fn page_up(cx: &mut Context) {
let view = view!(cx.editor);
let offset = view.inner_area().height as usize;
scroll(cx, offset, Direction::Backward);
}
fn page_down(cx: &mut Context) {
let view = view!(cx.editor);
let offset = view.inner_area().height as usize;
scroll(cx, offset, Direction::Forward);
}
fn half_page_up(cx: &mut Context) {
let view = view!(cx.editor);
let offset = view.inner_area().height as usize / 2;
scroll(cx, offset, Direction::Backward);
}
fn half_page_down(cx: &mut Context) {
let view = view!(cx.editor);
let offset = view.inner_area().height as usize / 2;
scroll(cx, offset, Direction::Forward);
}
fn copy_selection_on_line(cx: &mut Context, direction: Direction) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id);
let mut ranges = SmallVec::with_capacity(selection.ranges().len() * (count + 1));
ranges.extend_from_slice(selection.ranges());
let mut primary_index = 0;
for range in selection.iter() {
let is_primary = *range == selection.primary();
let head_pos = coords_at_pos(text, range.head);
let anchor_pos = coords_at_pos(text, range.anchor);
let height = std::cmp::max(head_pos.row, anchor_pos.row)
- std::cmp::min(head_pos.row, anchor_pos.row)
+ 1;
if is_primary {
primary_index = ranges.len();
}
ranges.push(*range);
let mut sels = 0;
let mut i = 0;
while sels < count {
let offset = (i + 1) * height;
let anchor_row = match direction {
Direction::Forward => anchor_pos.row + offset,
Direction::Backward => anchor_pos.row.saturating_sub(offset),
};
let head_row = match direction {
Direction::Forward => head_pos.row + offset,
Direction::Backward => head_pos.row.saturating_sub(offset),
};
if anchor_row >= text.len_lines() || head_row >= text.len_lines() {
break;
}
let anchor = pos_at_coords(text, Position::new(anchor_row, anchor_pos.col), true);
let head = pos_at_coords(text, Position::new(head_row, head_pos.col), true);
// skip lines that are too short
if coords_at_pos(text, anchor).col == anchor_pos.col
&& coords_at_pos(text, head).col == head_pos.col
{
if is_primary {
primary_index = ranges.len();
}
ranges.push(Range::new(anchor, head));
sels += 1;
}
i += 1;
}
}
let selection = Selection::new(ranges, primary_index);
doc.set_selection(view.id, selection);
}
fn copy_selection_on_prev_line(cx: &mut Context) {
copy_selection_on_line(cx, Direction::Backward)
}
fn copy_selection_on_next_line(cx: &mut Context) {
copy_selection_on_line(cx, Direction::Forward)
}
fn select_all(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let end = doc.text().len_chars();
doc.set_selection(view.id, Selection::single(0, end))
}
fn select_regex(cx: &mut Context) {
let reg = cx.register.unwrap_or('/');
let prompt = ui::regex_prompt(
cx,
"select:".into(),
Some(reg),
|_input: &str| Vec::new(),
move |view, doc, regex, event| {
if event != PromptEvent::Update {
return;
}
let text = doc.text().slice(..);
if let Some(selection) =
selection::select_on_matches(text, doc.selection(view.id), &regex)
{
doc.set_selection(view.id, selection);
}
},
);
cx.push_layer(Box::new(prompt));
}
fn split_selection(cx: &mut Context) {
let reg = cx.register.unwrap_or('/');
let prompt = ui::regex_prompt(
cx,
"split:".into(),
Some(reg),
|_input: &str| Vec::new(),
move |view, doc, regex, event| {
if event != PromptEvent::Update {
return;
}
let text = doc.text().slice(..);
let selection = selection::split_on_matches(text, doc.selection(view.id), &regex);
doc.set_selection(view.id, selection);
},
);
cx.push_layer(Box::new(prompt));
}
fn split_selection_on_newline(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
// only compile the regex once
#[allow(clippy::trivial_regex)]
static REGEX: Lazy<Regex> =
Lazy::new(|| Regex::new(r"\r\n|[\n\r\u{000B}\u{000C}\u{0085}\u{2028}\u{2029}]").unwrap());
let selection = selection::split_on_matches(text, doc.selection(view.id), &REGEX);
doc.set_selection(view.id, selection);
}
fn search_impl(
doc: &mut Document,
view: &mut View,
contents: &str,
regex: &Regex,
movement: Movement,
direction: Direction,
scrolloff: usize,
) {
let text = doc.text().slice(..);
let selection = doc.selection(view.id);
// Get the right side of the primary block cursor for forward search, or the
//grapheme before the start of the selection for reverse search.
let start = match direction {
Direction::Forward => text.char_to_byte(graphemes::next_grapheme_boundary(
text,
selection.primary().to(),
)),
Direction::Backward => text.char_to_byte(graphemes::prev_grapheme_boundary(
text,
selection.primary().from(),
)),
};
//A regex::Match returns byte-positions in the str. In the case where we
//do a reverse search and wraparound to the end, we don't need to search
//the text before the current cursor position for matches, but by slicing
//it out, we need to add it back to the position of the selection.
let mut offset = 0;
// use find_at to find the next match after the cursor, loop around the end
// Careful, `Regex` uses `bytes` as offsets, not character indices!
let mat = match direction {
Direction::Forward => regex
.find_at(contents, start)
.or_else(|| regex.find(contents)),
Direction::Backward => regex.find_iter(&contents[..start]).last().or_else(|| {
offset = start;
regex.find_iter(&contents[start..]).last()
}),
};
// TODO: message on wraparound
if let Some(mat) = mat {
let start = text.byte_to_char(mat.start() + offset);
let end = text.byte_to_char(mat.end() + offset);
if end == 0 {
// skip empty matches that don't make sense
return;
}
// Determine range direction based on the primary range
let primary = selection.primary();
let range = if primary.head < primary.anchor {
Range::new(end, start)
} else {
Range::new(start, end)
};
let selection = match movement {
Movement::Extend => selection.clone().push(range),
Movement::Move => selection.clone().replace(selection.primary_index(), range),
};
doc.set_selection(view.id, selection);
if view.is_cursor_in_view(doc, 0) {
view.ensure_cursor_in_view(doc, scrolloff);
} else {
align_view(doc, view, Align::Center)
}
};
}
fn search_completions(cx: &mut Context, reg: Option<char>) -> Vec<String> {
let mut items = reg
.and_then(|reg| cx.editor.registers.get(reg))
.map_or(Vec::new(), |reg| reg.read().iter().take(200).collect());
items.sort_unstable();
items.dedup();
items.into_iter().cloned().collect()
}
// TODO: use one function for search vs extend
fn search(cx: &mut Context) {
searcher(cx, Direction::Forward)
}
fn rsearch(cx: &mut Context) {
searcher(cx, Direction::Backward)
}
// TODO: use one function for search vs extend
fn searcher(cx: &mut Context, direction: Direction) {
let reg = cx.register.unwrap_or('/');
let scrolloff = cx.editor.config.scrolloff;
let (_, doc) = current!(cx.editor);
// TODO: could probably share with select_on_matches?
// HAXX: sadly we can't avoid allocating a single string for the whole buffer since we can't
// feed chunks into the regex yet
let contents = doc.text().slice(..).to_string();
let completions = search_completions(cx, Some(reg));
let prompt = ui::regex_prompt(
cx,
"search:".into(),
Some(reg),
move |input: &str| {
completions
.iter()
.filter(|comp| comp.starts_with(input))
.map(|comp| (0.., std::borrow::Cow::Owned(comp.clone())))
.collect()
},
move |view, doc, regex, event| {
if event != PromptEvent::Update {
return;
}
search_impl(
doc,
view,
&contents,
&regex,
Movement::Move,
direction,
scrolloff,
);
},
);
cx.push_layer(Box::new(prompt));
}
fn search_next_or_prev_impl(cx: &mut Context, movement: Movement, direction: Direction) {
let scrolloff = cx.editor.config.scrolloff;
let (view, doc) = current!(cx.editor);
let registers = &cx.editor.registers;
if let Some(query) = registers.read('/') {
let query = query.last().unwrap();
let contents = doc.text().slice(..).to_string();
let case_insensitive = if cx.editor.config.smart_case {
!query.chars().any(char::is_uppercase)
} else {
false
};
if let Ok(regex) = RegexBuilder::new(query)
.case_insensitive(case_insensitive)
.build()
{
search_impl(doc, view, &contents, &regex, movement, direction, scrolloff);
} else {
// get around warning `mutable_borrow_reservation_conflict`
// which will be a hard error in the future
// see: https://github.com/rust-lang/rust/issues/59159
let query = query.clone();
cx.editor.set_error(format!("Invalid regex: {}", query));
}
}
}
fn search_next(cx: &mut Context) {
search_next_or_prev_impl(cx, Movement::Move, Direction::Forward);
}
fn search_prev(cx: &mut Context) {
search_next_or_prev_impl(cx, Movement::Move, Direction::Backward);
}
fn extend_search_next(cx: &mut Context) {
search_next_or_prev_impl(cx, Movement::Extend, Direction::Forward);
}
fn extend_search_prev(cx: &mut Context) {
search_next_or_prev_impl(cx, Movement::Extend, Direction::Backward);
}
fn search_selection(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let contents = doc.text().slice(..);
let query = doc.selection(view.id).primary().fragment(contents);
let regex = regex::escape(&query);
cx.editor.registers.get_mut('/').push(regex);
let msg = format!("register '{}' set to '{}'", '\\', query);
cx.editor.set_status(msg);
}
fn global_search(cx: &mut Context) {
let (all_matches_sx, all_matches_rx) =
tokio::sync::mpsc::unbounded_channel::<(usize, PathBuf)>();
let smart_case = cx.editor.config.smart_case;
let file_picker_config = cx.editor.config.file_picker.clone();
let completions = search_completions(cx, None);
let prompt = ui::regex_prompt(
cx,
"global-search:".into(),
None,
move |input: &str| {
completions
.iter()
.filter(|comp| comp.starts_with(input))
.map(|comp| (0.., std::borrow::Cow::Owned(comp.clone())))
.collect()
},
move |_view, _doc, regex, event| {
if event != PromptEvent::Validate {
return;
}
if let Ok(matcher) = RegexMatcherBuilder::new()
.case_smart(smart_case)
.build(regex.as_str())
{
let searcher = SearcherBuilder::new()
.binary_detection(BinaryDetection::quit(b'\x00'))
.build();
let search_root = std::env::current_dir()
.expect("Global search error: Failed to get current dir");
WalkBuilder::new(search_root)
.hidden(file_picker_config.hidden)
.parents(file_picker_config.parents)
.ignore(file_picker_config.ignore)
.git_ignore(file_picker_config.git_ignore)
.git_global(file_picker_config.git_global)
.git_exclude(file_picker_config.git_exclude)
.max_depth(file_picker_config.max_depth)
.build_parallel()
.run(|| {
let mut searcher_cl = searcher.clone();
let matcher_cl = matcher.clone();
let all_matches_sx_cl = all_matches_sx.clone();
Box::new(move |dent: Result<DirEntry, ignore::Error>| -> WalkState {
let dent = match dent {
Ok(dent) => dent,
Err(_) => return WalkState::Continue,
};
match dent.file_type() {
Some(fi) => {
if !fi.is_file() {
return WalkState::Continue;
}
}
None => return WalkState::Continue,
}
let result_sink = sinks::UTF8(|line_num, _| {
match all_matches_sx_cl
.send((line_num as usize - 1, dent.path().to_path_buf()))
{
Ok(_) => Ok(true),
Err(_) => Ok(false),
}
});
let result =
searcher_cl.search_path(&matcher_cl, dent.path(), result_sink);
if let Err(err) = result {
log::error!(
"Global search error: {}, {}",
dent.path().display(),
err
);
}
WalkState::Continue
})
});
} else {
// Otherwise do nothing
// log::warn!("Global Search Invalid Pattern")
}
},
);
cx.push_layer(Box::new(prompt));
let current_path = doc_mut!(cx.editor).path().cloned();
let show_picker = async move {
let all_matches: Vec<(usize, PathBuf)> =
UnboundedReceiverStream::new(all_matches_rx).collect().await;
let call: job::Callback =
Box::new(move |editor: &mut Editor, compositor: &mut Compositor| {
if all_matches.is_empty() {
editor.set_status("No matches found".to_string());
return;
}
let picker = FilePicker::new(
all_matches,
move |(_line_num, path)| {
let relative_path = helix_core::path::get_relative_path(path)
.to_str()
.unwrap()
.to_owned();
if current_path.as_ref().map(|p| p == path).unwrap_or(false) {
format!("{} (*)", relative_path).into()
} else {
relative_path.into()
}
},
move |editor: &mut Editor, (line_num, path), action| {
match editor.open(path.into(), action) {
Ok(_) => {}
Err(e) => {
editor.set_error(format!(
"Failed to open file '{}': {}",
path.display(),
e
));
return;
}
}
let line_num = *line_num;
let (view, doc) = current!(editor);
let text = doc.text();
let start = text.line_to_char(line_num);
let end = text.line_to_char((line_num + 1).min(text.len_lines()));
doc.set_selection(view.id, Selection::single(start, end));
align_view(doc, view, Align::Center);
},
|_editor, (line_num, path)| Some((path.clone(), Some((*line_num, *line_num)))),
);
compositor.push(Box::new(picker));
});
Ok(call)
};
cx.jobs.callback(show_picker);
}
fn extend_line(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
let text = doc.text();
let range = doc.selection(view.id).primary();
let (start_line, end_line) = range.line_range(text.slice(..));
let start = text.line_to_char(start_line);
let mut end = text.line_to_char((end_line + count).min(text.len_lines()));
if range.from() == start && range.to() == end {
end = text.line_to_char((end_line + count + 1).min(text.len_lines()));
}
doc.set_selection(view.id, Selection::single(start, end));
}
fn extend_to_line_bounds(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
doc.set_selection(
view.id,
doc.selection(view.id).clone().transform(|range| {
let text = doc.text();
let (start_line, end_line) = range.line_range(text.slice(..));
let start = text.line_to_char(start_line);
let end = text.line_to_char((end_line + 1).min(text.len_lines()));
if range.anchor <= range.head {
Range::new(start, end)
} else {
Range::new(end, start)
}
}),
);
}
enum Operation {
Delete,
Change,
}
fn delete_selection_impl(cx: &mut Context, op: Operation) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id);
if cx.register != Some('_') {
// first yank the selection
let values: Vec<String> = selection.fragments(text).map(Cow::into_owned).collect();
let reg_name = cx.register.unwrap_or('"');
let registers = &mut cx.editor.registers;
let reg = registers.get_mut(reg_name);
reg.write(values);
};
// then delete
let transaction = Transaction::change_by_selection(doc.text(), selection, |range| {
(range.from(), range.to(), None)
});
doc.apply(&transaction, view.id);
match op {
Operation::Delete => {
doc.append_changes_to_history(view.id);
// exit select mode, if currently in select mode
exit_select_mode(cx);
}
Operation::Change => {
enter_insert_mode(doc);
}
}
}
#[inline]
fn delete_selection_insert_mode(doc: &mut Document, view: &View, selection: &Selection) {
let view_id = view.id;
// then delete
let transaction = Transaction::change_by_selection(doc.text(), selection, |range| {
(range.from(), range.to(), None)
});
doc.apply(&transaction, view_id);
}
fn delete_selection(cx: &mut Context) {
delete_selection_impl(cx, Operation::Delete);
}
fn delete_selection_noyank(cx: &mut Context) {
cx.register = Some('_');
delete_selection_impl(cx, Operation::Delete);
}
fn change_selection(cx: &mut Context) {
delete_selection_impl(cx, Operation::Change);
}
fn change_selection_noyank(cx: &mut Context) {
cx.register = Some('_');
delete_selection_impl(cx, Operation::Change);
}
fn collapse_selection(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id).clone().transform(|range| {
let pos = range.cursor(text);
Range::new(pos, pos)
});
doc.set_selection(view.id, selection);
}
fn flip_selections(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let selection = doc
.selection(view.id)
.clone()
.transform(|range| Range::new(range.head, range.anchor));
doc.set_selection(view.id, selection);
}
fn enter_insert_mode(doc: &mut Document) {
doc.mode = Mode::Insert;
}
// inserts at the start of each selection
fn insert_mode(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
enter_insert_mode(doc);
let selection = doc
.selection(view.id)
.clone()
.transform(|range| Range::new(range.to(), range.from()));
doc.set_selection(view.id, selection);
}
// inserts at the end of each selection
fn append_mode(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
enter_insert_mode(doc);
doc.restore_cursor = true;
let text = doc.text().slice(..);
// Make sure there's room at the end of the document if the last
// selection butts up against it.
let end = text.len_chars();
let last_range = doc.selection(view.id).iter().last().unwrap();
if !last_range.is_empty() && last_range.head == end {
let transaction = Transaction::change(
doc.text(),
std::array::IntoIter::new([(end, end, Some(doc.line_ending.as_str().into()))]),
);
doc.apply(&transaction, view.id);
}
let selection = doc.selection(view.id).clone().transform(|range| {
Range::new(
range.from(),
graphemes::next_grapheme_boundary(doc.text().slice(..), range.to()),
)
});
doc.set_selection(view.id, selection);
}
mod cmd {
use super::*;
use std::collections::HashMap;
use helix_view::editor::Action;
use ui::completers::{self, Completer};
#[derive(Clone)]
pub struct TypableCommand {
pub name: &'static str,
pub aliases: &'static [&'static str],
pub doc: &'static str,
// params, flags, helper, completer
pub fun: fn(&mut compositor::Context, &[&str], PromptEvent) -> anyhow::Result<()>,
pub completer: Option<Completer>,
}
fn quit(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
// last view and we have unsaved changes
if cx.editor.tree.views().count() == 1 {
buffers_remaining_impl(cx.editor)?
}
cx.editor.close(view!(cx.editor).id);
Ok(())
}
fn force_quit(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
cx.editor.close(view!(cx.editor).id);
Ok(())
}
fn open(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let path = args.get(0).context("wrong argument count")?;
let _ = cx.editor.open(path.into(), Action::Replace)?;
Ok(())
}
fn buffer_close(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let view = view!(cx.editor);
let doc_id = view.doc;
cx.editor.close_document(doc_id, false)?;
Ok(())
}
fn force_buffer_close(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let view = view!(cx.editor);
let doc_id = view.doc;
cx.editor.close_document(doc_id, true)?;
Ok(())
}
fn write_impl<P: AsRef<Path>>(
cx: &mut compositor::Context,
path: Option<P>,
) -> anyhow::Result<()> {
let jobs = &mut cx.jobs;
let (_, doc) = current!(cx.editor);
if let Some(ref path) = path {
doc.set_path(Some(path.as_ref()))
.context("invalid filepath")?;
}
if doc.path().is_none() {
bail!("cannot write a buffer without a filename");
}
let fmt = doc.auto_format().map(|fmt| {
let shared = fmt.shared();
let callback = make_format_callback(
doc.id(),
doc.version(),
Modified::SetUnmodified,
shared.clone(),
);
jobs.callback(callback);
shared
});
let future = doc.format_and_save(fmt);
cx.jobs.add(Job::new(future).wait_before_exiting());
if path.is_some() {
let id = doc.id();
let _ = cx.editor.refresh_language_server(id);
}
Ok(())
}
fn write(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
write_impl(cx, args.first())
}
fn new_file(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
cx.editor.new_file(Action::Replace);
Ok(())
}
fn format(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let (_, doc) = current!(cx.editor);
if let Some(format) = doc.format() {
let callback =
make_format_callback(doc.id(), doc.version(), Modified::LeaveModified, format);
cx.jobs.callback(callback);
}
Ok(())
}
fn set_indent_style(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
use IndentStyle::*;
// If no argument, report current indent style.
if args.is_empty() {
let style = doc!(cx.editor).indent_style;
cx.editor.set_status(match style {
Tabs => "tabs".into(),
Spaces(1) => "1 space".into(),
Spaces(n) if (2..=8).contains(&n) => format!("{} spaces", n),
_ => "error".into(), // Shouldn't happen.
});
return Ok(());
}
// Attempt to parse argument as an indent style.
let style = match args.get(0) {
Some(arg) if "tabs".starts_with(&arg.to_lowercase()) => Some(Tabs),
Some(&"0") => Some(Tabs),
Some(arg) => arg
.parse::<u8>()
.ok()
.filter(|n| (1..=8).contains(n))
.map(Spaces),
_ => None,
};
let style = style.context("invalid indent style")?;
let doc = doc_mut!(cx.editor);
doc.indent_style = style;
Ok(())
}
/// Sets or reports the current document's line ending setting.
fn set_line_ending(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
use LineEnding::*;
// If no argument, report current line ending setting.
if args.is_empty() {
let line_ending = doc!(cx.editor).line_ending;
cx.editor.set_status(match line_ending {
Crlf => "crlf".into(),
LF => "line feed".into(),
FF => "form feed".into(),
CR => "carriage return".into(),
Nel => "next line".into(),
// These should never be a document's default line ending.
VT | LS | PS => "error".into(),
});
return Ok(());
}
let arg = args
.get(0)
.context("argument missing")?
.to_ascii_lowercase();
// Attempt to parse argument as a line ending.
let line_ending = match arg {
// We check for CR first because it shares a common prefix with CRLF.
arg if arg.starts_with("cr") => CR,
arg if arg.starts_with("crlf") => Crlf,
arg if arg.starts_with("lf") => LF,
arg if arg.starts_with("ff") => FF,
arg if arg.starts_with("nel") => Nel,
_ => bail!("invalid line ending"),
};
doc_mut!(cx.editor).line_ending = line_ending;
Ok(())
}
fn earlier(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let uk = args.join(" ").parse::<UndoKind>().map_err(|s| anyhow!(s))?;
let (view, doc) = current!(cx.editor);
let success = doc.earlier(view.id, uk);
if !success {
cx.editor.set_status("Already at oldest change".to_owned());
}
Ok(())
}
fn later(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let uk = args.join(" ").parse::<UndoKind>().map_err(|s| anyhow!(s))?;
let (view, doc) = current!(cx.editor);
let success = doc.later(view.id, uk);
if !success {
cx.editor.set_status("Already at newest change".to_owned());
}
Ok(())
}
fn write_quit(
cx: &mut compositor::Context,
args: &[&str],
event: PromptEvent,
) -> anyhow::Result<()> {
write_impl(cx, args.first())?;
quit(cx, &[], event)
}
fn force_write_quit(
cx: &mut compositor::Context,
args: &[&str],
event: PromptEvent,
) -> anyhow::Result<()> {
write_impl(cx, args.first())?;
force_quit(cx, &[], event)
}
/// Results an error if there are modified buffers remaining and sets editor error,
/// otherwise returns `Ok(())`
pub(super) fn buffers_remaining_impl(editor: &mut Editor) -> anyhow::Result<()> {
let modified: Vec<_> = editor
.documents()
.filter(|doc| doc.is_modified())
.map(|doc| {
doc.relative_path()
.map(|path| path.to_string_lossy().to_string())
.unwrap_or_else(|| SCRATCH_BUFFER_NAME.into())
})
.collect();
if !modified.is_empty() {
bail!(
"{} unsaved buffer(s) remaining: {:?}",
modified.len(),
modified
);
}
Ok(())
}
fn write_all_impl(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
quit: bool,
force: bool,
) -> anyhow::Result<()> {
let mut errors = String::new();
// save all documents
for doc in &mut cx.editor.documents.values_mut() {
if doc.path().is_none() {
errors.push_str("cannot write a buffer without a filename\n");
continue;
}
// TODO: handle error.
let handle = doc.save();
cx.jobs.add(Job::new(handle).wait_before_exiting());
}
if quit {
if !force {
buffers_remaining_impl(cx.editor)?;
}
// close all views
let views: Vec<_> = cx.editor.tree.views().map(|(view, _)| view.id).collect();
for view_id in views {
cx.editor.close(view_id);
}
}
bail!(errors)
}
fn write_all(
cx: &mut compositor::Context,
args: &[&str],
event: PromptEvent,
) -> anyhow::Result<()> {
write_all_impl(cx, args, event, false, false)
}
fn write_all_quit(
cx: &mut compositor::Context,
args: &[&str],
event: PromptEvent,
) -> anyhow::Result<()> {
write_all_impl(cx, args, event, true, false)
}
fn force_write_all_quit(
cx: &mut compositor::Context,
args: &[&str],
event: PromptEvent,
) -> anyhow::Result<()> {
write_all_impl(cx, args, event, true, true)
}
fn quit_all_impl(
editor: &mut Editor,
_args: &[&str],
_event: PromptEvent,
force: bool,
) -> anyhow::Result<()> {
if !force {
buffers_remaining_impl(editor)?;
}
// close all views
let views: Vec<_> = editor.tree.views().map(|(view, _)| view.id).collect();
for view_id in views {
editor.close(view_id);
}
Ok(())
}
fn quit_all(
cx: &mut compositor::Context,
args: &[&str],
event: PromptEvent,
) -> anyhow::Result<()> {
quit_all_impl(cx.editor, args, event, false)
}
fn force_quit_all(
cx: &mut compositor::Context,
args: &[&str],
event: PromptEvent,
) -> anyhow::Result<()> {
quit_all_impl(cx.editor, args, event, true)
}
fn cquit(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let exit_code = args
.first()
.and_then(|code| code.parse::<i32>().ok())
.unwrap_or(1);
cx.editor.exit_code = exit_code;
let views: Vec<_> = cx.editor.tree.views().map(|(view, _)| view.id).collect();
for view_id in views {
cx.editor.close(view_id);
}
Ok(())
}
fn theme(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let theme = args.first().context("theme not provided")?;
cx.editor.set_theme_from_name(theme)
}
fn yank_main_selection_to_clipboard(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
yank_main_selection_to_clipboard_impl(cx.editor, ClipboardType::Clipboard)
}
fn yank_joined_to_clipboard(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let (_, doc) = current!(cx.editor);
let separator = args
.first()
.copied()
.unwrap_or_else(|| doc.line_ending.as_str());
yank_joined_to_clipboard_impl(cx.editor, separator, ClipboardType::Clipboard)
}
fn yank_main_selection_to_primary_clipboard(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
yank_main_selection_to_clipboard_impl(cx.editor, ClipboardType::Selection)
}
fn yank_joined_to_primary_clipboard(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let (_, doc) = current!(cx.editor);
let separator = args
.first()
.copied()
.unwrap_or_else(|| doc.line_ending.as_str());
yank_joined_to_clipboard_impl(cx.editor, separator, ClipboardType::Selection)
}
fn paste_clipboard_after(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
paste_clipboard_impl(cx.editor, Paste::After, ClipboardType::Clipboard)
}
fn paste_clipboard_before(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
paste_clipboard_impl(cx.editor, Paste::After, ClipboardType::Clipboard)
}
fn paste_primary_clipboard_after(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
paste_clipboard_impl(cx.editor, Paste::After, ClipboardType::Selection)
}
fn paste_primary_clipboard_before(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
paste_clipboard_impl(cx.editor, Paste::After, ClipboardType::Selection)
}
fn replace_selections_with_clipboard_impl(
cx: &mut compositor::Context,
clipboard_type: ClipboardType,
) -> anyhow::Result<()> {
let (view, doc) = current!(cx.editor);
match cx.editor.clipboard_provider.get_contents(clipboard_type) {
Ok(contents) => {
let selection = doc.selection(view.id);
let transaction =
Transaction::change_by_selection(doc.text(), selection, |range| {
(range.from(), range.to(), Some(contents.as_str().into()))
});
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
Ok(())
}
Err(e) => Err(e.context("Couldn't get system clipboard contents")),
}
}
fn replace_selections_with_clipboard(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
replace_selections_with_clipboard_impl(cx, ClipboardType::Clipboard)
}
fn replace_selections_with_primary_clipboard(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
replace_selections_with_clipboard_impl(cx, ClipboardType::Selection)
}
fn show_clipboard_provider(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
cx.editor
.set_status(cx.editor.clipboard_provider.name().to_string());
Ok(())
}
fn change_current_directory(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let dir = helix_core::path::expand_tilde(
args.first()
.context("target directory not provided")?
.as_ref(),
);
if let Err(e) = std::env::set_current_dir(dir) {
bail!("Couldn't change the current working directory: {}", e);
}
let cwd = std::env::current_dir().context("Couldn't get the new working directory")?;
cx.editor.set_status(format!(
"Current working directory is now {}",
cwd.display()
));
Ok(())
}
fn show_current_directory(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let cwd = std::env::current_dir().context("Couldn't get the new working directory")?;
cx.editor
.set_status(format!("Current working directory is {}", cwd.display()));
Ok(())
}
/// Sets the [`Document`]'s encoding..
fn set_encoding(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let (_, doc) = current!(cx.editor);
if let Some(label) = args.first() {
doc.set_encoding(label)
} else {
let encoding = doc.encoding().name().to_string();
cx.editor.set_status(encoding);
Ok(())
}
}
/// Reload the [`Document`] from its source file.
fn reload(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let (view, doc) = current!(cx.editor);
doc.reload(view.id)
}
fn tree_sitter_scopes(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let pos = doc.selection(view.id).primary().cursor(text);
let scopes = indent::get_scopes(doc.syntax(), text, pos);
cx.editor.set_status(format!("scopes: {:?}", &scopes));
Ok(())
}
fn vsplit(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let id = view!(cx.editor).doc;
if let Some(path) = args.get(0) {
cx.editor.open(path.into(), Action::VerticalSplit)?;
} else {
cx.editor.switch(id, Action::VerticalSplit);
}
Ok(())
}
fn hsplit(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let id = view!(cx.editor).doc;
if let Some(path) = args.get(0) {
cx.editor.open(path.into(), Action::HorizontalSplit)?;
} else {
cx.editor.switch(id, Action::HorizontalSplit);
}
Ok(())
}
fn tutor(
cx: &mut compositor::Context,
_args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
let path = helix_core::runtime_dir().join("tutor.txt");
cx.editor.open(path, Action::Replace)?;
// Unset path to prevent accidentally saving to the original tutor file.
doc_mut!(cx.editor).set_path(None)?;
Ok(())
}
pub(super) fn goto_line_number(
cx: &mut compositor::Context,
args: &[&str],
_event: PromptEvent,
) -> anyhow::Result<()> {
ensure!(!args.is_empty(), "Line number required");
let line = args[0].parse::<usize>()?;
goto_line_impl(cx.editor, NonZeroUsize::new(line));
let (view, doc) = current!(cx.editor);
view.ensure_cursor_in_view(doc, line);
Ok(())
}
pub const TYPABLE_COMMAND_LIST: &[TypableCommand] = &[
TypableCommand {
name: "quit",
aliases: &["q"],
doc: "Close the current view.",
fun: quit,
completer: None,
},
TypableCommand {
name: "quit!",
aliases: &["q!"],
doc: "Close the current view forcefully (ignoring unsaved changes).",
fun: force_quit,
completer: None,
},
TypableCommand {
name: "open",
aliases: &["o"],
doc: "Open a file from disk into the current view.",
fun: open,
completer: Some(completers::filename),
},
TypableCommand {
name: "buffer-close",
aliases: &["bc", "bclose"],
doc: "Close the current buffer.",
fun: buffer_close,
completer: None, // FIXME: buffer completer
},
TypableCommand {
name: "buffer-close!",
aliases: &["bc!", "bclose!"],
doc: "Close the current buffer forcefully (ignoring unsaved changes).",
fun: force_buffer_close,
completer: None, // FIXME: buffer completer
},
TypableCommand {
name: "write",
aliases: &["w"],
doc: "Write changes to disk. Accepts an optional path (:write some/path.txt)",
fun: write,
completer: Some(completers::filename),
},
TypableCommand {
name: "new",
aliases: &["n"],
doc: "Create a new scratch buffer.",
fun: new_file,
completer: Some(completers::filename),
},
TypableCommand {
name: "format",
aliases: &["fmt"],
doc: "Format the file using a formatter.",
fun: format,
completer: None,
},
TypableCommand {
name: "indent-style",
aliases: &[],
doc: "Set the indentation style for editing. ('t' for tabs or 1-8 for number of spaces.)",
fun: set_indent_style,
completer: None,
},
TypableCommand {
name: "line-ending",
aliases: &[],
doc: "Set the document's default line ending. Options: crlf, lf, cr, ff, nel.",
fun: set_line_ending,
completer: None,
},
TypableCommand {
name: "earlier",
aliases: &["ear"],
doc: "Jump back to an earlier point in edit history. Accepts a number of steps or a time span.",
fun: earlier,
completer: None,
},
TypableCommand {
name: "later",
aliases: &["lat"],
doc: "Jump to a later point in edit history. Accepts a number of steps or a time span.",
fun: later,
completer: None,
},
TypableCommand {
name: "write-quit",
aliases: &["wq", "x"],
doc: "Write changes to disk and close the current view. Accepts an optional path (:wq some/path.txt)",
fun: write_quit,
completer: Some(completers::filename),
},
TypableCommand {
name: "write-quit!",
aliases: &["wq!", "x!"],
doc: "Write changes to disk and close the current view forcefully. Accepts an optional path (:wq! some/path.txt)",
fun: force_write_quit,
completer: Some(completers::filename),
},
TypableCommand {
name: "write-all",
aliases: &["wa"],
doc: "Write changes from all views to disk.",
fun: write_all,
completer: None,
},
TypableCommand {
name: "write-quit-all",
aliases: &["wqa", "xa"],
doc: "Write changes from all views to disk and close all views.",
fun: write_all_quit,
completer: None,
},
TypableCommand {
name: "write-quit-all!",
aliases: &["wqa!", "xa!"],
doc: "Write changes from all views to disk and close all views forcefully (ignoring unsaved changes).",
fun: force_write_all_quit,
completer: None,
},
TypableCommand {
name: "quit-all",
aliases: &["qa"],
doc: "Close all views.",
fun: quit_all,
completer: None,
},
TypableCommand {
name: "quit-all!",
aliases: &["qa!"],
doc: "Close all views forcefully (ignoring unsaved changes).",
fun: force_quit_all,
completer: None,
},
TypableCommand {
name: "cquit",
aliases: &["cq"],
doc: "Quit with exit code (default 1). Accepts an optional integer exit code (:cq 2).",
fun: cquit,
completer: None,
},
TypableCommand {
name: "theme",
aliases: &[],
doc: "Change the theme of current view. Requires theme name as argument (:theme <name>)",
fun: theme,
completer: Some(completers::theme),
},
TypableCommand {
name: "clipboard-yank",
aliases: &[],
doc: "Yank main selection into system clipboard.",
fun: yank_main_selection_to_clipboard,
completer: None,
},
TypableCommand {
name: "clipboard-yank-join",
aliases: &[],
doc: "Yank joined selections into system clipboard. A separator can be provided as first argument. Default value is newline.", // FIXME: current UI can't display long doc.
fun: yank_joined_to_clipboard,
completer: None,
},
TypableCommand {
name: "primary-clipboard-yank",
aliases: &[],
doc: "Yank main selection into system primary clipboard.",
fun: yank_main_selection_to_primary_clipboard,
completer: None,
},
TypableCommand {
name: "primary-clipboard-yank-join",
aliases: &[],
doc: "Yank joined selections into system primary clipboard. A separator can be provided as first argument. Default value is newline.", // FIXME: current UI can't display long doc.
fun: yank_joined_to_primary_clipboard,
completer: None,
},
TypableCommand {
name: "clipboard-paste-after",
aliases: &[],
doc: "Paste system clipboard after selections.",
fun: paste_clipboard_after,
completer: None,
},
TypableCommand {
name: "clipboard-paste-before",
aliases: &[],
doc: "Paste system clipboard before selections.",
fun: paste_clipboard_before,
completer: None,
},
TypableCommand {
name: "clipboard-paste-replace",
aliases: &[],
doc: "Replace selections with content of system clipboard.",
fun: replace_selections_with_clipboard,
completer: None,
},
TypableCommand {
name: "primary-clipboard-paste-after",
aliases: &[],
doc: "Paste primary clipboard after selections.",
fun: paste_primary_clipboard_after,
completer: None,
},
TypableCommand {
name: "primary-clipboard-paste-before",
aliases: &[],
doc: "Paste primary clipboard before selections.",
fun: paste_primary_clipboard_before,
completer: None,
},
TypableCommand {
name: "primary-clipboard-paste-replace",
aliases: &[],
doc: "Replace selections with content of system primary clipboard.",
fun: replace_selections_with_primary_clipboard,
completer: None,
},
TypableCommand {
name: "show-clipboard-provider",
aliases: &[],
doc: "Show clipboard provider name in status bar.",
fun: show_clipboard_provider,
completer: None,
},
TypableCommand {
name: "change-current-directory",
aliases: &["cd"],
doc: "Change the current working directory (:cd <dir>).",
fun: change_current_directory,
completer: Some(completers::directory),
},
TypableCommand {
name: "show-directory",
aliases: &["pwd"],
doc: "Show the current working directory.",
fun: show_current_directory,
completer: None,
},
TypableCommand {
name: "encoding",
aliases: &[],
doc: "Set encoding based on `https://encoding.spec.whatwg.org`",
fun: set_encoding,
completer: None,
},
TypableCommand {
name: "reload",
aliases: &[],
doc: "Discard changes and reload from the source file.",
fun: reload,
completer: None,
},
TypableCommand {
name: "tree-sitter-scopes",
aliases: &[],
doc: "Display tree sitter scopes, primarily for theming and development.",
fun: tree_sitter_scopes,
completer: None,
},
TypableCommand {
name: "vsplit",
aliases: &["vs"],
doc: "Open the file in a vertical split.",
fun: vsplit,
completer: Some(completers::filename),
},
TypableCommand {
name: "hsplit",
aliases: &["hs", "sp"],
doc: "Open the file in a horizontal split.",
fun: hsplit,
completer: Some(completers::filename),
},
TypableCommand {
name: "tutor",
aliases: &[],
doc: "Open the tutorial.",
fun: tutor,
completer: None,
},
TypableCommand {
name: "goto",
aliases: &["g"],
doc: "Go to line number.",
fun: goto_line_number,
completer: None,
}
];
pub static TYPABLE_COMMAND_MAP: Lazy<HashMap<&'static str, &'static TypableCommand>> =
Lazy::new(|| {
TYPABLE_COMMAND_LIST
.iter()
.flat_map(|cmd| {
std::iter::once((cmd.name, cmd))
.chain(cmd.aliases.iter().map(move |&alias| (alias, cmd)))
})
.collect()
});
}
fn command_mode(cx: &mut Context) {
let mut prompt = Prompt::new(
":".into(),
Some(':'),
|input: &str| {
// we use .this over split_whitespace() because we care about empty segments
let parts = input.split(' ').collect::<Vec<&str>>();
// simple heuristic: if there's no just one part, complete command name.
// if there's a space, per command completion kicks in.
if parts.len() <= 1 {
let end = 0..;
cmd::TYPABLE_COMMAND_LIST
.iter()
.filter(|command| command.name.contains(input))
.map(|command| (end.clone(), Cow::Borrowed(command.name)))
.collect()
} else {
let part = parts.last().unwrap();
if let Some(cmd::TypableCommand {
completer: Some(completer),
..
}) = cmd::TYPABLE_COMMAND_MAP.get(parts[0])
{
completer(part)
.into_iter()
.map(|(range, file)| {
// offset ranges to input
let offset = input.len() - part.len();
let range = (range.start + offset)..;
(range, file)
})
.collect()
} else {
Vec::new()
}
}
}, // completion
move |cx: &mut compositor::Context, input: &str, event: PromptEvent| {
if event != PromptEvent::Validate {
return;
}
let parts = input.split_whitespace().collect::<Vec<&str>>();
if parts.is_empty() {
return;
}
// If command is numeric, interpret as line number and go there.
if parts.len() == 1 && parts[0].parse::<usize>().ok().is_some() {
if let Err(e) = cmd::goto_line_number(cx, &parts[0..], event) {
cx.editor.set_error(format!("{}", e));
}
return;
}
// Handle typable commands
if let Some(cmd) = cmd::TYPABLE_COMMAND_MAP.get(parts[0]) {
if let Err(e) = (cmd.fun)(cx, &parts[1..], event) {
cx.editor.set_error(format!("{}", e));
}
} else {
cx.editor
.set_error(format!("no such command: '{}'", parts[0]));
};
},
);
prompt.doc_fn = Box::new(|input: &str| {
let part = input.split(' ').next().unwrap_or_default();
if let Some(cmd::TypableCommand { doc, .. }) = cmd::TYPABLE_COMMAND_MAP.get(part) {
return Some(doc);
}
None
});
cx.push_layer(Box::new(prompt));
}
fn file_picker(cx: &mut Context) {
let root = find_root(None).unwrap_or_else(|| PathBuf::from("./"));
let picker = ui::file_picker(root, &cx.editor.config);
cx.push_layer(Box::new(picker));
}
fn buffer_picker(cx: &mut Context) {
let current = view!(cx.editor).doc;
struct BufferMeta {
id: DocumentId,
path: Option<PathBuf>,
is_modified: bool,
is_current: bool,
}
impl BufferMeta {
fn format(&self) -> Cow<str> {
let path = self
.path
.as_deref()
.map(helix_core::path::get_relative_path);
let path = match path.as_deref().and_then(Path::to_str) {
Some(path) => path,
None => return Cow::Borrowed(SCRATCH_BUFFER_NAME),
};
let mut flags = Vec::new();
if self.is_modified {
flags.push("+");
}
if self.is_current {
flags.push("*");
}
let flag = if flags.is_empty() {
"".into()
} else {
format!(" ({})", flags.join(""))
};
Cow::Owned(format!("{}{}", path, flag))
}
}
let new_meta = |doc: &Document| BufferMeta {
id: doc.id(),
path: doc.path().cloned(),
is_modified: doc.is_modified(),
is_current: doc.id() == current,
};
let picker = FilePicker::new(
cx.editor
.documents
.iter()
.map(|(_, doc)| new_meta(doc))
.collect(),
BufferMeta::format,
|editor: &mut Editor, meta, _action| {
editor.switch(meta.id, Action::Replace);
},
|editor, meta| {
let doc = &editor.documents.get(&meta.id)?;
let &view_id = doc.selections().keys().next()?;
let line = doc
.selection(view_id)
.primary()
.cursor_line(doc.text().slice(..));
Some((meta.path.clone()?, Some((line, line))))
},
);
cx.push_layer(Box::new(picker));
}
fn symbol_picker(cx: &mut Context) {
fn nested_to_flat(
list: &mut Vec<lsp::SymbolInformation>,
file: &lsp::TextDocumentIdentifier,
symbol: lsp::DocumentSymbol,
) {
#[allow(deprecated)]
list.push(lsp::SymbolInformation {
name: symbol.name,
kind: symbol.kind,
tags: symbol.tags,
deprecated: symbol.deprecated,
location: lsp::Location::new(file.uri.clone(), symbol.selection_range),
container_name: None,
});
for child in symbol.children.into_iter().flatten() {
nested_to_flat(list, file, child);
}
}
let (_, doc) = current!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let offset_encoding = language_server.offset_encoding();
let future = language_server.document_symbols(doc.identifier());
cx.callback(
future,
move |editor: &mut Editor,
compositor: &mut Compositor,
response: Option<lsp::DocumentSymbolResponse>| {
if let Some(symbols) = response {
// lsp has two ways to represent symbols (flat/nested)
// convert the nested variant to flat, so that we have a homogeneous list
let symbols = match symbols {
lsp::DocumentSymbolResponse::Flat(symbols) => symbols,
lsp::DocumentSymbolResponse::Nested(symbols) => {
let (_view, doc) = current!(editor);
let mut flat_symbols = Vec::new();
for symbol in symbols {
nested_to_flat(&mut flat_symbols, &doc.identifier(), symbol)
}
flat_symbols
}
};
let mut picker = FilePicker::new(
symbols,
|symbol| (&symbol.name).into(),
move |editor: &mut Editor, symbol, _action| {
push_jump(editor);
let (view, doc) = current!(editor);
if let Some(range) =
lsp_range_to_range(doc.text(), symbol.location.range, offset_encoding)
{
// we flip the range so that the cursor sits on the start of the symbol
// (for example start of the function).
doc.set_selection(view.id, Selection::single(range.head, range.anchor));
align_view(doc, view, Align::Center);
}
},
move |_editor, symbol| {
let path = symbol.location.uri.to_file_path().unwrap();
let line = Some((
symbol.location.range.start.line as usize,
symbol.location.range.end.line as usize,
));
Some((path, line))
},
);
picker.truncate_start = false;
compositor.push(Box::new(picker))
}
},
)
}
fn workspace_symbol_picker(cx: &mut Context) {
let (_, doc) = current!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let offset_encoding = language_server.offset_encoding();
let future = language_server.workspace_symbols("".to_string());
let current_path = doc_mut!(cx.editor).path().cloned();
cx.callback(
future,
move |_editor: &mut Editor,
compositor: &mut Compositor,
response: Option<Vec<lsp::SymbolInformation>>| {
if let Some(symbols) = response {
let mut picker = FilePicker::new(
symbols,
move |symbol| {
let path = symbol.location.uri.to_file_path().unwrap();
if current_path.as_ref().map(|p| p == &path).unwrap_or(false) {
(&symbol.name).into()
} else {
let relative_path = helix_core::path::get_relative_path(path.as_path())
.to_str()
.unwrap()
.to_owned();
format!("{} ({})", &symbol.name, relative_path).into()
}
},
move |editor: &mut Editor, symbol, action| {
let path = symbol.location.uri.to_file_path().unwrap();
editor.open(path, action).expect("editor.open failed");
let (view, doc) = current!(editor);
if let Some(range) =
lsp_range_to_range(doc.text(), symbol.location.range, offset_encoding)
{
// we flip the range so that the cursor sits on the start of the symbol
// (for example start of the function).
doc.set_selection(view.id, Selection::single(range.head, range.anchor));
align_view(doc, view, Align::Center);
}
},
move |_editor, symbol| {
let path = symbol.location.uri.to_file_path().unwrap();
let line = Some((
symbol.location.range.start.line as usize,
symbol.location.range.end.line as usize,
));
Some((path, line))
},
);
picker.truncate_start = false;
compositor.push(Box::new(picker))
}
},
)
}
pub fn code_action(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let range = range_to_lsp_range(
doc.text(),
doc.selection(view.id).primary(),
language_server.offset_encoding(),
);
let future = language_server.code_actions(doc.identifier(), range);
let offset_encoding = language_server.offset_encoding();
cx.callback(
future,
move |_editor: &mut Editor,
compositor: &mut Compositor,
response: Option<lsp::CodeActionResponse>| {
if let Some(actions) = response {
let picker = Picker::new(
true,
actions,
|action| match action {
lsp::CodeActionOrCommand::CodeAction(action) => {
action.title.as_str().into()
}
lsp::CodeActionOrCommand::Command(command) => command.title.as_str().into(),
},
move |editor, code_action, _action| match code_action {
lsp::CodeActionOrCommand::Command(command) => {
log::debug!("code action command: {:?}", command);
editor.set_error(String::from("Handling code action command is not implemented yet, see https://github.com/helix-editor/helix/issues/183"));
}
lsp::CodeActionOrCommand::CodeAction(code_action) => {
log::debug!("code action: {:?}", code_action);
if let Some(ref workspace_edit) = code_action.edit {
apply_workspace_edit(editor, offset_encoding, workspace_edit)
}
}
},
);
compositor.push(Box::new(picker))
}
},
)
}
pub fn apply_document_resource_op(op: &lsp::ResourceOp) -> std::io::Result<()> {
use lsp::ResourceOp;
use std::fs;
match op {
ResourceOp::Create(op) => {
let path = op.uri.to_file_path().unwrap();
let ignore_if_exists = if let Some(options) = &op.options {
!options.overwrite.unwrap_or(false) && options.ignore_if_exists.unwrap_or(false)
} else {
false
};
if ignore_if_exists && path.exists() {
Ok(())
} else {
fs::write(&path, [])
}
}
ResourceOp::Delete(op) => {
let path = op.uri.to_file_path().unwrap();
if path.is_dir() {
let recursive = if let Some(options) = &op.options {
options.recursive.unwrap_or(false)
} else {
false
};
if recursive {
fs::remove_dir_all(&path)
} else {
fs::remove_dir(&path)
}
} else if path.is_file() {
fs::remove_file(&path)
} else {
Ok(())
}
}
ResourceOp::Rename(op) => {
let from = op.old_uri.to_file_path().unwrap();
let to = op.new_uri.to_file_path().unwrap();
let ignore_if_exists = if let Some(options) = &op.options {
!options.overwrite.unwrap_or(false) && options.ignore_if_exists.unwrap_or(false)
} else {
false
};
if ignore_if_exists && to.exists() {
Ok(())
} else {
fs::rename(&from, &to)
}
}
}
}
fn apply_workspace_edit(
editor: &mut Editor,
offset_encoding: OffsetEncoding,
workspace_edit: &lsp::WorkspaceEdit,
) {
let mut apply_edits = |uri: &helix_lsp::Url, text_edits: Vec<lsp::TextEdit>| {
let path = uri
.to_file_path()
.expect("unable to convert URI to filepath");
let current_view_id = view!(editor).id;
let doc_id = editor.open(path, Action::Load).unwrap();
let doc = editor
.document_mut(doc_id)
.expect("Document for document_changes not found");
// Need to determine a view for apply/append_changes_to_history
let selections = doc.selections();
let view_id = if selections.contains_key(&current_view_id) {
// use current if possible
current_view_id
} else {
// Hack: we take the first available view_id
selections
.keys()
.next()
.copied()
.expect("No view_id available")
};
let transaction = helix_lsp::util::generate_transaction_from_edits(
doc.text(),
text_edits,
offset_encoding,
);
doc.apply(&transaction, view_id);
doc.append_changes_to_history(view_id);
};
if let Some(ref changes) = workspace_edit.changes {
log::debug!("workspace changes: {:?}", changes);
for (uri, text_edits) in changes {
let text_edits = text_edits.to_vec();
apply_edits(uri, text_edits);
}
return;
// Not sure if it works properly, it'll be safer to just panic here to avoid breaking some parts of code on which code actions will be used
// TODO: find some example that uses workspace changes, and test it
// for (url, edits) in changes.iter() {
// let file_path = url.origin().ascii_serialization();
// let file_path = std::path::PathBuf::from(file_path);
// let file = std::fs::File::open(file_path).unwrap();
// let mut text = Rope::from_reader(file).unwrap();
// let transaction = edits_to_changes(&text, edits);
// transaction.apply(&mut text);
// }
}
if let Some(ref document_changes) = workspace_edit.document_changes {
match document_changes {
lsp::DocumentChanges::Edits(document_edits) => {
for document_edit in document_edits {
let edits = document_edit
.edits
.iter()
.map(|edit| match edit {
lsp::OneOf::Left(text_edit) => text_edit,
lsp::OneOf::Right(annotated_text_edit) => {
&annotated_text_edit.text_edit
}
})
.cloned()
.collect();
apply_edits(&document_edit.text_document.uri, edits);
}
}
lsp::DocumentChanges::Operations(operations) => {
log::debug!("document changes - operations: {:?}", operations);
for operateion in operations {
match operateion {
lsp::DocumentChangeOperation::Op(op) => {
apply_document_resource_op(op).unwrap();
}
lsp::DocumentChangeOperation::Edit(document_edit) => {
let edits = document_edit
.edits
.iter()
.map(|edit| match edit {
lsp::OneOf::Left(text_edit) => text_edit,
lsp::OneOf::Right(annotated_text_edit) => {
&annotated_text_edit.text_edit
}
})
.cloned()
.collect();
apply_edits(&document_edit.text_document.uri, edits);
}
}
}
}
}
}
}
fn last_picker(cx: &mut Context) {
// TODO: last picker does not seem to work well with buffer_picker
cx.callback = Some(Box::new(|compositor: &mut Compositor| {
if let Some(picker) = compositor.last_picker.take() {
compositor.push(picker);
}
// XXX: figure out how to show error when no last picker lifetime
// cx.editor.set_error("no last picker".to_owned())
}));
}
// I inserts at the first nonwhitespace character of each line with a selection
fn prepend_to_line(cx: &mut Context) {
goto_first_nonwhitespace(cx);
let doc = doc_mut!(cx.editor);
enter_insert_mode(doc);
}
// A inserts at the end of each line with a selection
fn append_to_line(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
enter_insert_mode(doc);
let selection = doc.selection(view.id).clone().transform(|range| {
let text = doc.text().slice(..);
let line = range.cursor_line(text);
let pos = line_end_char_index(&text, line);
Range::new(pos, pos)
});
doc.set_selection(view.id, selection);
}
/// Sometimes when applying formatting changes we want to mark the buffer as unmodified, for
/// example because we just applied the same changes while saving.
enum Modified {
SetUnmodified,
LeaveModified,
}
// Creates an LspCallback that waits for formatting changes to be computed. When they're done,
// it applies them, but only if the doc hasn't changed.
//
// TODO: provide some way to cancel this, probably as part of a more general job cancellation
// scheme
async fn make_format_callback(
doc_id: DocumentId,
doc_version: i32,
modified: Modified,
format: impl Future<Output = helix_lsp::util::LspFormatting> + Send + 'static,
) -> anyhow::Result<job::Callback> {
let format = format.await;
let call: job::Callback = Box::new(move |editor: &mut Editor, _compositor: &mut Compositor| {
let view_id = view!(editor).id;
if let Some(doc) = editor.document_mut(doc_id) {
if doc.version() == doc_version {
doc.apply(&Transaction::from(format), view_id);
doc.append_changes_to_history(view_id);
if let Modified::SetUnmodified = modified {
doc.reset_modified();
}
} else {
log::info!("discarded formatting changes because the document changed");
}
}
});
Ok(call)
}
enum Open {
Below,
Above,
}
fn open(cx: &mut Context, open: Open) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
enter_insert_mode(doc);
let text = doc.text().slice(..);
let contents = doc.text();
let selection = doc.selection(view.id);
let mut ranges = SmallVec::with_capacity(selection.len());
let mut offs = 0;
let mut transaction = Transaction::change_by_selection(contents, selection, |range| {
let line = range.cursor_line(text);
let line = match open {
// adjust position to the end of the line (next line - 1)
Open::Below => line + 1,
// adjust position to the end of the previous line (current line - 1)
Open::Above => line,
};
// Index to insert newlines after, as well as the char width
// to use to compensate for those inserted newlines.
let (line_end_index, line_end_offset_width) = if line == 0 {
(0, 0)
} else {
(
line_end_char_index(&doc.text().slice(..), line.saturating_sub(1)),
doc.line_ending.len_chars(),
)
};
// TODO: share logic with insert_newline for indentation
let indent_level = indent::suggested_indent_for_pos(
doc.language_config(),
doc.syntax(),
text,
line_end_index,
true,
);
let indent = doc.indent_unit().repeat(indent_level);
let indent_len = indent.len();
let mut text = String::with_capacity(1 + indent_len);
text.push_str(doc.line_ending.as_str());
text.push_str(&indent);
let text = text.repeat(count);
// calculate new selection ranges
let pos = offs + line_end_index + line_end_offset_width;
for i in 0..count {
// pos -> beginning of reference line,
// + (i * (1+indent_len)) -> beginning of i'th line from pos
// + indent_len -> -> indent for i'th line
ranges.push(Range::point(pos + (i * (1 + indent_len)) + indent_len));
}
offs += text.chars().count();
(line_end_index, line_end_index, Some(text.into()))
});
transaction = transaction.with_selection(Selection::new(ranges, selection.primary_index()));
doc.apply(&transaction, view.id);
}
// o inserts a new line after each line with a selection
fn open_below(cx: &mut Context) {
open(cx, Open::Below)
}
// O inserts a new line before each line with a selection
fn open_above(cx: &mut Context) {
open(cx, Open::Above)
}
fn normal_mode(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
if doc.mode == Mode::Normal {
return;
}
doc.mode = Mode::Normal;
doc.append_changes_to_history(view.id);
// if leaving append mode, move cursor back by 1
if doc.restore_cursor {
let text = doc.text().slice(..);
let selection = doc.selection(view.id).clone().transform(|range| {
Range::new(
range.from(),
graphemes::prev_grapheme_boundary(text, range.to()),
)
});
doc.set_selection(view.id, selection);
doc.restore_cursor = false;
}
}
// Store a jump on the jumplist.
fn push_jump(editor: &mut Editor) {
let (view, doc) = current!(editor);
let jump = (doc.id(), doc.selection(view.id).clone());
view.jumps.push(jump);
}
fn goto_line(cx: &mut Context) {
goto_line_impl(cx.editor, cx.count)
}
fn goto_line_impl(editor: &mut Editor, count: Option<NonZeroUsize>) {
if let Some(count) = count {
push_jump(editor);
let (view, doc) = current!(editor);
let max_line = if doc.text().line(doc.text().len_lines() - 1).len_chars() == 0 {
// If the last line is blank, don't jump to it.
doc.text().len_lines().saturating_sub(2)
} else {
doc.text().len_lines() - 1
};
let line_idx = std::cmp::min(count.get() - 1, max_line);
let text = doc.text().slice(..);
let pos = doc.text().line_to_char(line_idx);
let selection = doc
.selection(view.id)
.clone()
.transform(|range| range.put_cursor(text, pos, doc.mode == Mode::Select));
doc.set_selection(view.id, selection);
}
}
fn goto_last_line(cx: &mut Context) {
push_jump(cx.editor);
let (view, doc) = current!(cx.editor);
let line_idx = if doc.text().line(doc.text().len_lines() - 1).len_chars() == 0 {
// If the last line is blank, don't jump to it.
doc.text().len_lines().saturating_sub(2)
} else {
doc.text().len_lines() - 1
};
let text = doc.text().slice(..);
let pos = doc.text().line_to_char(line_idx);
let selection = doc
.selection(view.id)
.clone()
.transform(|range| range.put_cursor(text, pos, doc.mode == Mode::Select));
doc.set_selection(view.id, selection);
}
fn goto_last_accessed_file(cx: &mut Context) {
let alternate_file = view!(cx.editor).last_accessed_doc;
if let Some(alt) = alternate_file {
cx.editor.switch(alt, Action::Replace);
} else {
cx.editor.set_error("no last accessed buffer".to_owned())
}
}
fn goto_last_modification(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let pos = doc.history.get_mut().last_edit_pos();
let text = doc.text().slice(..);
if let Some(pos) = pos {
let selection = doc
.selection(view.id)
.clone()
.transform(|range| range.put_cursor(text, pos, doc.mode == Mode::Select));
doc.set_selection(view.id, selection);
}
}
fn goto_last_modified_file(cx: &mut Context) {
let view = view!(cx.editor);
let alternate_file = view
.last_modified_docs
.into_iter()
.flatten()
.find(|&id| id != view.doc);
if let Some(alt) = alternate_file {
cx.editor.switch(alt, Action::Replace);
} else {
cx.editor.set_error("no last modified buffer".to_owned())
}
}
fn select_mode(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
// Make sure end-of-document selections are also 1-width.
// (With the exception of being in an empty document, of course.)
let selection = doc.selection(view.id).clone().transform(|range| {
if range.is_empty() && range.head == text.len_chars() {
Range::new(
graphemes::prev_grapheme_boundary(text, range.anchor),
range.head,
)
} else {
range
}
});
doc.set_selection(view.id, selection);
doc_mut!(cx.editor).mode = Mode::Select;
}
fn exit_select_mode(cx: &mut Context) {
let doc = doc_mut!(cx.editor);
if doc.mode == Mode::Select {
doc.mode = Mode::Normal;
}
}
fn goto_impl(
editor: &mut Editor,
compositor: &mut Compositor,
locations: Vec<lsp::Location>,
offset_encoding: OffsetEncoding,
) {
push_jump(editor);
fn jump_to(
editor: &mut Editor,
location: &lsp::Location,
offset_encoding: OffsetEncoding,
action: Action,
) {
let path = location
.uri
.to_file_path()
.expect("unable to convert URI to filepath");
let _id = editor.open(path, action).expect("editor.open failed");
let (view, doc) = current!(editor);
let definition_pos = location.range.start;
// TODO: convert inside server
let new_pos =
if let Some(new_pos) = lsp_pos_to_pos(doc.text(), definition_pos, offset_encoding) {
new_pos
} else {
return;
};
doc.set_selection(view.id, Selection::point(new_pos));
align_view(doc, view, Align::Center);
}
let cwdir = std::env::current_dir().expect("couldn't determine current directory");
match locations.as_slice() {
[location] => {
jump_to(editor, location, offset_encoding, Action::Replace);
}
[] => {
editor.set_error("No definition found.".to_string());
}
_locations => {
let picker = FilePicker::new(
locations,
move |location| {
let file: Cow<'_, str> = (location.uri.scheme() == "file")
.then(|| {
location
.uri
.to_file_path()
.map(|path| {
// strip root prefix
path.strip_prefix(&cwdir)
.map(|path| path.to_path_buf())
.unwrap_or(path)
})
.ok()
.and_then(|path| path.to_str().map(|path| path.to_owned().into()))
})
.flatten()
.unwrap_or_else(|| location.uri.as_str().into());
let line = location.range.start.line;
format!("{}:{}", file, line).into()
},
move |editor: &mut Editor, location, action| {
jump_to(editor, location, offset_encoding, action)
},
|_editor, location| {
let path = location.uri.to_file_path().unwrap();
let line = Some((
location.range.start.line as usize,
location.range.end.line as usize,
));
Some((path, line))
},
);
compositor.push(Box::new(picker));
}
}
}
fn goto_definition(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let offset_encoding = language_server.offset_encoding();
let pos = pos_to_lsp_pos(
doc.text(),
doc.selection(view.id)
.primary()
.cursor(doc.text().slice(..)),
offset_encoding,
);
let future = language_server.goto_definition(doc.identifier(), pos, None);
cx.callback(
future,
move |editor: &mut Editor,
compositor: &mut Compositor,
response: Option<lsp::GotoDefinitionResponse>| {
let items = match response {
Some(lsp::GotoDefinitionResponse::Scalar(location)) => vec![location],
Some(lsp::GotoDefinitionResponse::Array(locations)) => locations,
Some(lsp::GotoDefinitionResponse::Link(locations)) => locations
.into_iter()
.map(|location_link| lsp::Location {
uri: location_link.target_uri,
range: location_link.target_range,
})
.collect(),
None => Vec::new(),
};
goto_impl(editor, compositor, items, offset_encoding);
},
);
}
fn goto_type_definition(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let offset_encoding = language_server.offset_encoding();
let pos = pos_to_lsp_pos(
doc.text(),
doc.selection(view.id)
.primary()
.cursor(doc.text().slice(..)),
offset_encoding,
);
let future = language_server.goto_type_definition(doc.identifier(), pos, None);
cx.callback(
future,
move |editor: &mut Editor,
compositor: &mut Compositor,
response: Option<lsp::GotoDefinitionResponse>| {
let items = match response {
Some(lsp::GotoDefinitionResponse::Scalar(location)) => vec![location],
Some(lsp::GotoDefinitionResponse::Array(locations)) => locations,
Some(lsp::GotoDefinitionResponse::Link(locations)) => locations
.into_iter()
.map(|location_link| lsp::Location {
uri: location_link.target_uri,
range: location_link.target_range,
})
.collect(),
None => Vec::new(),
};
goto_impl(editor, compositor, items, offset_encoding);
},
);
}
fn goto_implementation(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let offset_encoding = language_server.offset_encoding();
let pos = pos_to_lsp_pos(
doc.text(),
doc.selection(view.id)
.primary()
.cursor(doc.text().slice(..)),
offset_encoding,
);
let future = language_server.goto_implementation(doc.identifier(), pos, None);
cx.callback(
future,
move |editor: &mut Editor,
compositor: &mut Compositor,
response: Option<lsp::GotoDefinitionResponse>| {
let items = match response {
Some(lsp::GotoDefinitionResponse::Scalar(location)) => vec![location],
Some(lsp::GotoDefinitionResponse::Array(locations)) => locations,
Some(lsp::GotoDefinitionResponse::Link(locations)) => locations
.into_iter()
.map(|location_link| lsp::Location {
uri: location_link.target_uri,
range: location_link.target_range,
})
.collect(),
None => Vec::new(),
};
goto_impl(editor, compositor, items, offset_encoding);
},
);
}
fn goto_reference(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let offset_encoding = language_server.offset_encoding();
let pos = pos_to_lsp_pos(
doc.text(),
doc.selection(view.id)
.primary()
.cursor(doc.text().slice(..)),
offset_encoding,
);
let future = language_server.goto_reference(doc.identifier(), pos, None);
cx.callback(
future,
move |editor: &mut Editor,
compositor: &mut Compositor,
items: Option<Vec<lsp::Location>>| {
goto_impl(
editor,
compositor,
items.unwrap_or_default(),
offset_encoding,
);
},
);
}
fn goto_pos(editor: &mut Editor, pos: usize) {
push_jump(editor);
let (view, doc) = current!(editor);
doc.set_selection(view.id, Selection::point(pos));
align_view(doc, view, Align::Center);
}
fn goto_first_diag(cx: &mut Context) {
let editor = &mut cx.editor;
let (_, doc) = current!(editor);
let pos = match doc.diagnostics().first() {
Some(diag) => diag.range.start,
None => return,
};
goto_pos(editor, pos);
}
fn goto_last_diag(cx: &mut Context) {
let editor = &mut cx.editor;
let (_, doc) = current!(editor);
let pos = match doc.diagnostics().last() {
Some(diag) => diag.range.start,
None => return,
};
goto_pos(editor, pos);
}
fn goto_next_diag(cx: &mut Context) {
let editor = &mut cx.editor;
let (view, doc) = current!(editor);
let cursor_pos = doc
.selection(view.id)
.primary()
.cursor(doc.text().slice(..));
let diag = doc
.diagnostics()
.iter()
.find(|diag| diag.range.start > cursor_pos)
.or_else(|| doc.diagnostics().first());
let pos = match diag {
Some(diag) => diag.range.start,
None => return,
};
goto_pos(editor, pos);
}
fn goto_prev_diag(cx: &mut Context) {
let editor = &mut cx.editor;
let (view, doc) = current!(editor);
let cursor_pos = doc
.selection(view.id)
.primary()
.cursor(doc.text().slice(..));
let diag = doc
.diagnostics()
.iter()
.rev()
.find(|diag| diag.range.start < cursor_pos)
.or_else(|| doc.diagnostics().last());
let pos = match diag {
Some(diag) => diag.range.start,
None => return,
};
goto_pos(editor, pos);
}
fn signature_help(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let pos = pos_to_lsp_pos(
doc.text(),
doc.selection(view.id)
.primary()
.cursor(doc.text().slice(..)),
language_server.offset_encoding(),
);
let future = language_server.text_document_signature_help(doc.identifier(), pos, None);
cx.callback(
future,
move |_editor: &mut Editor,
_compositor: &mut Compositor,
response: Option<lsp::SignatureHelp>| {
if let Some(signature_help) = response {
log::info!("{:?}", signature_help);
// signatures
// active_signature
// active_parameter
// render as:
// signature
// ----------
// doc
// with active param highlighted
}
},
);
}
// NOTE: Transactions in this module get appended to history when we switch back to normal mode.
pub mod insert {
use super::*;
pub type Hook = fn(&Rope, &Selection, char) -> Option<Transaction>;
pub type PostHook = fn(&mut Context, char);
// It trigger completion when idle timer reaches deadline
// Only trigger completion if the word under cursor is longer than n characters
pub fn idle_completion(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let cursor = doc.selection(view.id).primary().cursor(text);
use helix_core::chars::char_is_word;
let mut iter = text.chars_at(cursor);
iter.reverse();
for _ in 0..cx.editor.config.completion_trigger_len {
match iter.next() {
Some(c) if char_is_word(c) => {}
_ => return,
}
}
super::completion(cx);
}
fn language_server_completion(cx: &mut Context, ch: char) {
// if ch matches completion char, trigger completion
let doc = doc_mut!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let capabilities = language_server.capabilities();
if let Some(lsp::CompletionOptions {
trigger_characters: Some(triggers),
..
}) = &capabilities.completion_provider
{
// TODO: what if trigger is multiple chars long
if triggers.iter().any(|trigger| trigger.contains(ch)) {
cx.editor.clear_idle_timer();
super::completion(cx);
}
}
}
fn signature_help(cx: &mut Context, ch: char) {
// if ch matches signature_help char, trigger
let doc = doc_mut!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let capabilities = language_server.capabilities();
if let lsp::ServerCapabilities {
signature_help_provider:
Some(lsp::SignatureHelpOptions {
trigger_characters: Some(triggers),
// TODO: retrigger_characters
..
}),
..
} = capabilities
{
// TODO: what if trigger is multiple chars long
let is_trigger = triggers.iter().any(|trigger| trigger.contains(ch));
if is_trigger {
super::signature_help(cx);
}
}
// SignatureHelp {
// signatures: [
// SignatureInformation {
// label: "fn open(&mut self, path: PathBuf, action: Action) -> Result<DocumentId, Error>",
// documentation: None,
// parameters: Some(
// [ParameterInformation { label: Simple("path: PathBuf"), documentation: None },
// ParameterInformation { label: Simple("action: Action"), documentation: None }]
// ),
// active_parameter: Some(0)
// }
// ],
// active_signature: None, active_parameter: Some(0)
// }
}
// The default insert hook: simply insert the character
#[allow(clippy::unnecessary_wraps)] // need to use Option<> because of the Hook signature
fn insert(doc: &Rope, selection: &Selection, ch: char) -> Option<Transaction> {
let t = Tendril::from_char(ch);
let transaction = Transaction::insert(doc, selection, t);
Some(transaction)
}
use helix_core::auto_pairs;
pub fn insert_char(cx: &mut Context, c: char) {
let (view, doc) = current!(cx.editor);
let hooks: &[Hook] = match cx.editor.config.auto_pairs {
true => &[auto_pairs::hook, insert],
false => &[insert],
};
let text = doc.text();
let selection = doc.selection(view.id).clone().cursors(text.slice(..));
// run through insert hooks, stopping on the first one that returns Some(t)
for hook in hooks {
if let Some(transaction) = hook(text, &selection, c) {
doc.apply(&transaction, view.id);
break;
}
}
// TODO: need a post insert hook too for certain triggers (autocomplete, signature help, etc)
// this could also generically look at Transaction, but it's a bit annoying to look at
// Operation instead of Change.
for hook in &[language_server_completion, signature_help] {
// for hook in &[signature_help] {
hook(cx, c);
}
}
pub fn insert_tab(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
// TODO: round out to nearest indentation level (for example a line with 3 spaces should
// indent by one to reach 4 spaces).
let indent = Tendril::from(doc.indent_unit());
let transaction = Transaction::insert(
doc.text(),
&doc.selection(view.id).clone().cursors(doc.text().slice(..)),
indent,
);
doc.apply(&transaction, view.id);
}
pub fn insert_newline(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let contents = doc.text();
let selection = doc.selection(view.id).clone().cursors(text);
let mut ranges = SmallVec::with_capacity(selection.len());
// TODO: this is annoying, but we need to do it to properly calculate pos after edits
let mut offs = 0;
let mut transaction = Transaction::change_by_selection(contents, &selection, |range| {
let pos = range.head;
let prev = if pos == 0 {
' '
} else {
contents.char(pos - 1)
};
let curr = contents.get_char(pos).unwrap_or(' ');
// TODO: offset range.head by 1? when calculating?
let indent_level = indent::suggested_indent_for_pos(
doc.language_config(),
doc.syntax(),
text,
pos.saturating_sub(1),
true,
);
let indent = doc.indent_unit().repeat(indent_level);
let mut text = String::with_capacity(1 + indent.len());
text.push_str(doc.line_ending.as_str());
text.push_str(&indent);
let head = pos + offs + text.chars().count();
// TODO: range replace or extend
// range.replace(|range| range.is_empty(), head); -> fn extend if cond true, new head pos
// can be used with cx.mode to do replace or extend on most changes
ranges.push(Range::new(
if range.is_empty() {
head
} else {
range.anchor + offs
},
head,
));
// if between a bracket pair
if helix_core::auto_pairs::PAIRS.contains(&(prev, curr)) {
// another newline, indent the end bracket one level less
let indent = doc.indent_unit().repeat(indent_level.saturating_sub(1));
text.push_str(doc.line_ending.as_str());
text.push_str(&indent);
}
offs += text.chars().count();
(pos, pos, Some(text.into()))
});
transaction = transaction.with_selection(Selection::new(ranges, selection.primary_index()));
//
doc.apply(&transaction, view.id);
}
pub fn delete_char_backward(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let indent_unit = doc.indent_unit();
let tab_size = doc.tab_width();
let transaction =
Transaction::change_by_selection(doc.text(), doc.selection(view.id), |range| {
let pos = range.cursor(text);
let line_start_pos = text.line_to_char(range.cursor_line(text));
// considier to delete by indent level if all characters before `pos` are indent units.
let fragment = Cow::from(text.slice(line_start_pos..pos));
if !fragment.is_empty() && fragment.chars().all(|ch| ch.is_whitespace()) {
if text.get_char(pos.saturating_sub(1)) == Some('\t') {
// fast path, delete one char
(
graphemes::nth_prev_grapheme_boundary(text, pos, 1),
pos,
None,
)
} else {
let unit_len = indent_unit.chars().count();
// NOTE: indent_unit always contains 'only spaces' or 'only tab' according to `IndentStyle` definition.
let unit_size = if indent_unit.starts_with('\t') {
tab_size * unit_len
} else {
unit_len
};
let width: usize = fragment
.chars()
.map(|ch| {
if ch == '\t' {
tab_size
} else {
// it can be none if it still meet control characters other than '\t'
// here just set the width to 1 (or some value better?).
ch.width().unwrap_or(1)
}
})
.sum();
let mut drop = width % unit_size; // round down to nearest unit
if drop == 0 {
drop = unit_size
}; // if it's already at a unit, consume a whole unit
let mut chars = fragment.chars().rev();
let mut start = pos;
for _ in 0..drop {
// delete up to `drop` spaces
match chars.next() {
Some(' ') => start -= 1,
_ => break,
}
}
(start, pos, None) // delete!
}
} else {
// delete char
(
graphemes::nth_prev_grapheme_boundary(text, pos, count),
pos,
None,
)
}
});
doc.apply(&transaction, view.id);
}
pub fn delete_char_forward(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let transaction =
Transaction::change_by_selection(doc.text(), doc.selection(view.id), |range| {
let pos = range.cursor(text);
(
pos,
graphemes::nth_next_grapheme_boundary(text, pos, count),
None,
)
});
doc.apply(&transaction, view.id);
}
pub fn delete_word_backward(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc
.selection(view.id)
.clone()
.transform(|range| movement::move_prev_word_start(text, range, count));
delete_selection_insert_mode(doc, view, &selection);
}
pub fn delete_word_forward(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc
.selection(view.id)
.clone()
.transform(|range| movement::move_next_word_start(text, range, count));
delete_selection_insert_mode(doc, view, &selection);
}
}
// Undo / Redo
// TODO: each command could simply return a Option<transaction>, then the higher level handles
// storing it?
fn undo(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
for _ in 0..count {
if !doc.undo(view.id) {
cx.editor.set_status("Already at oldest change".to_owned());
break;
}
}
}
fn redo(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
for _ in 0..count {
if !doc.redo(view.id) {
cx.editor.set_status("Already at newest change".to_owned());
break;
}
}
}
fn earlier(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
for _ in 0..count {
// rather than doing in batch we do this so get error halfway
if !doc.earlier(view.id, UndoKind::Steps(1)) {
cx.editor.set_status("Already at oldest change".to_owned());
break;
}
}
}
fn later(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
for _ in 0..count {
// rather than doing in batch we do this so get error halfway
if !doc.later(view.id, UndoKind::Steps(1)) {
cx.editor.set_status("Already at newest change".to_owned());
break;
}
}
}
// Yank / Paste
fn yank(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let values: Vec<String> = doc
.selection(view.id)
.fragments(text)
.map(Cow::into_owned)
.collect();
let msg = format!(
"yanked {} selection(s) to register {}",
values.len(),
cx.register.unwrap_or('"')
);
cx.editor
.registers
.write(cx.register.unwrap_or('"'), values);
cx.editor.set_status(msg);
exit_select_mode(cx);
}
fn yank_joined_to_clipboard_impl(
editor: &mut Editor,
separator: &str,
clipboard_type: ClipboardType,
) -> anyhow::Result<()> {
let (view, doc) = current!(editor);
let text = doc.text().slice(..);
let values: Vec<String> = doc
.selection(view.id)
.fragments(text)
.map(Cow::into_owned)
.collect();
let msg = format!(
"joined and yanked {} selection(s) to system clipboard",
values.len(),
);
let joined = values.join(separator);
editor
.clipboard_provider
.set_contents(joined, clipboard_type)
.context("Couldn't set system clipboard content")?;
editor.set_status(msg);
Ok(())
}
fn yank_joined_to_clipboard(cx: &mut Context) {
let line_ending = doc!(cx.editor).line_ending;
let _ =
yank_joined_to_clipboard_impl(cx.editor, line_ending.as_str(), ClipboardType::Clipboard);
exit_select_mode(cx);
}
fn yank_main_selection_to_clipboard_impl(
editor: &mut Editor,
clipboard_type: ClipboardType,
) -> anyhow::Result<()> {
let (view, doc) = current!(editor);
let text = doc.text().slice(..);
let value = doc.selection(view.id).primary().fragment(text);
if let Err(e) = editor
.clipboard_provider
.set_contents(value.into_owned(), clipboard_type)
{
bail!("Couldn't set system clipboard content: {}", e);
}
editor.set_status("yanked main selection to system clipboard".to_owned());
Ok(())
}
fn yank_main_selection_to_clipboard(cx: &mut Context) {
let _ = yank_main_selection_to_clipboard_impl(cx.editor, ClipboardType::Clipboard);
}
fn yank_joined_to_primary_clipboard(cx: &mut Context) {
let line_ending = doc!(cx.editor).line_ending;
let _ =
yank_joined_to_clipboard_impl(cx.editor, line_ending.as_str(), ClipboardType::Selection);
}
fn yank_main_selection_to_primary_clipboard(cx: &mut Context) {
let _ = yank_main_selection_to_clipboard_impl(cx.editor, ClipboardType::Selection);
exit_select_mode(cx);
}
#[derive(Copy, Clone)]
enum Paste {
Before,
After,
}
fn paste_impl(
values: &[String],
doc: &mut Document,
view: &View,
action: Paste,
) -> Option<Transaction> {
let repeat = std::iter::repeat(
values
.last()
.map(|value| Tendril::from_slice(value))
.unwrap(),
);
// if any of values ends with a line ending, it's linewise paste
let linewise = values
.iter()
.any(|value| get_line_ending_of_str(value).is_some());
// Only compiled once.
#[allow(clippy::trivial_regex)]
static REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"\r\n|\r|\n").unwrap());
let mut values = values
.iter()
.map(|value| REGEX.replace_all(value, doc.line_ending.as_str()))
.map(|value| Tendril::from(value.as_ref()))
.chain(repeat);
let text = doc.text();
let selection = doc.selection(view.id);
let transaction = Transaction::change_by_selection(text, selection, |range| {
let pos = match (action, linewise) {
// paste linewise before
(Paste::Before, true) => text.line_to_char(text.char_to_line(range.from())),
// paste linewise after
(Paste::After, true) => {
let line = range.line_range(text.slice(..)).1;
text.line_to_char((line + 1).min(text.len_lines()))
}
// paste insert
(Paste::Before, false) => range.from(),
// paste append
(Paste::After, false) => range.to(),
};
(pos, pos, Some(values.next().unwrap()))
});
Some(transaction)
}
fn paste_clipboard_impl(
editor: &mut Editor,
action: Paste,
clipboard_type: ClipboardType,
) -> anyhow::Result<()> {
let (view, doc) = current!(editor);
match editor
.clipboard_provider
.get_contents(clipboard_type)
.map(|contents| paste_impl(&[contents], doc, view, action))
{
Ok(Some(transaction)) => {
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
Ok(())
}
Ok(None) => Ok(()),
Err(e) => Err(e.context("Couldn't get system clipboard contents")),
}
}
fn paste_clipboard_after(cx: &mut Context) {
let _ = paste_clipboard_impl(cx.editor, Paste::After, ClipboardType::Clipboard);
}
fn paste_clipboard_before(cx: &mut Context) {
let _ = paste_clipboard_impl(cx.editor, Paste::Before, ClipboardType::Clipboard);
}
fn paste_primary_clipboard_after(cx: &mut Context) {
let _ = paste_clipboard_impl(cx.editor, Paste::After, ClipboardType::Selection);
}
fn paste_primary_clipboard_before(cx: &mut Context) {
let _ = paste_clipboard_impl(cx.editor, Paste::Before, ClipboardType::Selection);
}
fn replace_with_yanked(cx: &mut Context) {
let reg_name = cx.register.unwrap_or('"');
let (view, doc) = current!(cx.editor);
let registers = &mut cx.editor.registers;
if let Some(values) = registers.read(reg_name) {
if !values.is_empty() {
let repeat = std::iter::repeat(
values
.last()
.map(|value| Tendril::from_slice(value))
.unwrap(),
);
let mut values = values
.iter()
.map(|value| Tendril::from_slice(value))
.chain(repeat);
let selection = doc.selection(view.id);
let transaction = Transaction::change_by_selection(doc.text(), selection, |range| {
if !range.is_empty() {
(range.from(), range.to(), Some(values.next().unwrap()))
} else {
(range.from(), range.to(), None)
}
});
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
}
}
fn replace_selections_with_clipboard_impl(
editor: &mut Editor,
clipboard_type: ClipboardType,
) -> anyhow::Result<()> {
let (view, doc) = current!(editor);
match editor.clipboard_provider.get_contents(clipboard_type) {
Ok(contents) => {
let selection = doc.selection(view.id);
let transaction = Transaction::change_by_selection(doc.text(), selection, |range| {
(range.from(), range.to(), Some(contents.as_str().into()))
});
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
Ok(())
}
Err(e) => Err(e.context("Couldn't get system clipboard contents")),
}
}
fn replace_selections_with_clipboard(cx: &mut Context) {
let _ = replace_selections_with_clipboard_impl(cx.editor, ClipboardType::Clipboard);
}
fn replace_selections_with_primary_clipboard(cx: &mut Context) {
let _ = replace_selections_with_clipboard_impl(cx.editor, ClipboardType::Selection);
}
fn paste_after(cx: &mut Context) {
let reg_name = cx.register.unwrap_or('"');
let (view, doc) = current!(cx.editor);
let registers = &mut cx.editor.registers;
if let Some(transaction) = registers
.read(reg_name)
.and_then(|values| paste_impl(values, doc, view, Paste::After))
{
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
}
fn paste_before(cx: &mut Context) {
let reg_name = cx.register.unwrap_or('"');
let (view, doc) = current!(cx.editor);
let registers = &mut cx.editor.registers;
if let Some(transaction) = registers
.read(reg_name)
.and_then(|values| paste_impl(values, doc, view, Paste::Before))
{
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
}
fn get_lines(doc: &Document, view_id: ViewId) -> Vec<usize> {
let mut lines = Vec::new();
// Get all line numbers
for range in doc.selection(view_id) {
let (start, end) = range.line_range(doc.text().slice(..));
for line in start..=end {
lines.push(line)
}
}
lines.sort_unstable(); // sorting by usize so _unstable is preferred
lines.dedup();
lines
}
fn indent(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
let lines = get_lines(doc, view.id);
// Indent by one level
let indent = Tendril::from(doc.indent_unit().repeat(count));
let transaction = Transaction::change(
doc.text(),
lines.into_iter().map(|line| {
let pos = doc.text().line_to_char(line);
(pos, pos, Some(indent.clone()))
}),
);
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
fn unindent(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
let lines = get_lines(doc, view.id);
let mut changes = Vec::with_capacity(lines.len());
let tab_width = doc.tab_width();
let indent_width = count * tab_width;
for line_idx in lines {
let line = doc.text().line(line_idx);
let mut width = 0;
let mut pos = 0;
for ch in line.chars() {
match ch {
' ' => width += 1,
'\t' => width = (width / tab_width + 1) * tab_width,
_ => break,
}
pos += 1;
if width >= indent_width {
break;
}
}
// now delete from start to first non-blank
if pos > 0 {
let start = doc.text().line_to_char(line_idx);
changes.push((start, start + pos, None))
}
}
let transaction = Transaction::change(doc.text(), changes.into_iter());
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
fn format_selections(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
// via lsp if available
// else via tree-sitter indentation calculations
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let ranges: Vec<lsp::Range> = doc
.selection(view.id)
.iter()
.map(|range| range_to_lsp_range(doc.text(), *range, language_server.offset_encoding()))
.collect();
// TODO: all of the TODO's and commented code inside the loop,
// to make this actually work.
for _range in ranges {
let _language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
// TODO: handle fails
// TODO: concurrent map
// TODO: need to block to get the formatting
// let edits = block_on(language_server.text_document_range_formatting(
// doc.identifier(),
// range,
// lsp::FormattingOptions::default(),
// ))
// .unwrap_or_default();
// let transaction = helix_lsp::util::generate_transaction_from_edits(
// doc.text(),
// edits,
// language_server.offset_encoding(),
// );
// doc.apply(&transaction, view.id);
}
doc.append_changes_to_history(view.id);
}
fn join_selections(cx: &mut Context) {
use movement::skip_while;
let (view, doc) = current!(cx.editor);
let text = doc.text();
let slice = doc.text().slice(..);
let mut changes = Vec::new();
let fragment = Tendril::from(" ");
for selection in doc.selection(view.id) {
let (start, mut end) = selection.line_range(slice);
if start == end {
end = (end + 1).min(text.len_lines() - 1);
}
let lines = start..end;
changes.reserve(lines.len());
for line in lines {
let start = line_end_char_index(&slice, line);
let mut end = text.line_to_char(line + 1);
end = skip_while(slice, end, |ch| matches!(ch, ' ' | '\t')).unwrap_or(end);
// need to skip from start, not end
let change = (start, end, Some(fragment.clone()));
changes.push(change);
}
}
changes.sort_unstable_by_key(|(from, _to, _text)| *from);
changes.dedup();
// TODO: joining multiple empty lines should be replaced by a single space.
// need to merge change ranges that touch
let transaction = Transaction::change(doc.text(), changes.into_iter());
// TODO: select inserted spaces
// .with_selection(selection);
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
fn keep_or_remove_selections_impl(cx: &mut Context, remove: bool) {
// keep or remove selections matching regex
let reg = cx.register.unwrap_or('/');
let prompt = ui::regex_prompt(
cx,
if !remove { "keep:" } else { "remove:" }.into(),
Some(reg),
|_input: &str| Vec::new(),
move |view, doc, regex, event| {
if event != PromptEvent::Update {
return;
}
let text = doc.text().slice(..);
if let Some(selection) =
selection::keep_or_remove_matches(text, doc.selection(view.id), &regex, remove)
{
doc.set_selection(view.id, selection);
}
},
);
cx.push_layer(Box::new(prompt));
}
fn keep_selections(cx: &mut Context) {
keep_or_remove_selections_impl(cx, false)
}
fn remove_selections(cx: &mut Context) {
keep_or_remove_selections_impl(cx, true)
}
fn keep_primary_selection(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
// TODO: handle count
let range = doc.selection(view.id).primary();
doc.set_selection(view.id, Selection::single(range.anchor, range.head));
}
fn remove_primary_selection(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
// TODO: handle count
let selection = doc.selection(view.id);
if selection.len() == 1 {
cx.editor.set_error("no selections remaining".to_owned());
return;
}
let index = selection.primary_index();
let selection = selection.clone().remove(index);
doc.set_selection(view.id, selection);
}
pub fn completion(cx: &mut Context) {
// trigger on trigger char, or if user calls it
// (or on word char typing??)
// after it's triggered, if response marked is_incomplete, update on every subsequent keypress
//
// lsp calls are done via a callback: it sends a request and doesn't block.
// when we get the response similarly to notification, trigger a call to the completion popup
//
// language_server.completion(params, |cx: &mut Context, _meta, response| {
// // called at response time
// // compositor, lookup completion layer
// // downcast dyn Component to Completion component
// // emit response to completion (completion.complete/handle(response))
// })
//
// typing after prompt opens: usually start offset is tracked and everything between
// start_offset..cursor is replaced. For our purposes we could keep the start state (doc,
// selection) and revert to them before applying. This needs to properly reset changes/history
// though...
//
// company-mode does this by matching the prefix of the completion and removing it.
// ignore isIncomplete for now
// keep state while typing
// the behavior should be, filter the menu based on input
// if items returns empty at any point, remove the popup
// if backspace past initial offset point, remove the popup
//
// debounce requests!
//
// need an idle timeout thing.
// https://github.com/company-mode/company-mode/blob/master/company.el#L620-L622
//
// "The idle delay in seconds until completion starts automatically.
// The prefix still has to satisfy `company-minimum-prefix-length' before that
// happens. The value of nil means no idle completion."
let (view, doc) = current!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let offset_encoding = language_server.offset_encoding();
let text = doc.text().slice(..);
let cursor = doc.selection(view.id).primary().cursor(text);
let pos = pos_to_lsp_pos(doc.text(), cursor, offset_encoding);
let future = language_server.completion(doc.identifier(), pos, None);
let trigger_offset = cursor;
// TODO: trigger_offset should be the cursor offset but we also need a starting offset from where we want to apply
// completion filtering. For example logger.te| should filter the initial suggestion list with "te".
use helix_core::chars;
let mut iter = text.chars_at(cursor);
iter.reverse();
let offset = iter.take_while(|ch| chars::char_is_word(*ch)).count();
let start_offset = cursor.saturating_sub(offset);
let prefix = text.slice(start_offset..cursor).to_string();
cx.callback(
future,
move |editor: &mut Editor,
compositor: &mut Compositor,
response: Option<lsp::CompletionResponse>| {
let (_, doc) = current!(editor);
if doc.mode() != Mode::Insert {
// we're not in insert mode anymore
return;
}
let mut items = match response {
Some(lsp::CompletionResponse::Array(items)) => items,
// TODO: do something with is_incomplete
Some(lsp::CompletionResponse::List(lsp::CompletionList {
is_incomplete: _is_incomplete,
items,
})) => items,
None => Vec::new(),
};
if !prefix.is_empty() {
items = items
.into_iter()
.filter(|item| {
item.filter_text
.as_ref()
.unwrap_or(&item.label)
.starts_with(&prefix)
})
.collect();
}
if items.is_empty() {
// editor.set_error("No completion available".to_string());
return;
}
let size = compositor.size();
let ui = compositor.find::<ui::EditorView>().unwrap();
ui.set_completion(
editor,
items,
offset_encoding,
start_offset,
trigger_offset,
size,
);
},
);
}
fn hover(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
// TODO: factor out a doc.position_identifier() that returns lsp::TextDocumentPositionIdentifier
let pos = pos_to_lsp_pos(
doc.text(),
doc.selection(view.id)
.primary()
.cursor(doc.text().slice(..)),
language_server.offset_encoding(),
);
let future = language_server.text_document_hover(doc.identifier(), pos, None);
cx.callback(
future,
move |editor: &mut Editor, compositor: &mut Compositor, response: Option<lsp::Hover>| {
if let Some(hover) = response {
// hover.contents / .range <- used for visualizing
fn marked_string_to_markdown(contents: lsp::MarkedString) -> String {
match contents {
lsp::MarkedString::String(contents) => contents,
lsp::MarkedString::LanguageString(string) => {
if string.language == "markdown" {
string.value
} else {
format!("```{}\n{}\n```", string.language, string.value)
}
}
}
}
let contents = match hover.contents {
lsp::HoverContents::Scalar(contents) => marked_string_to_markdown(contents),
lsp::HoverContents::Array(contents) => contents
.into_iter()
.map(marked_string_to_markdown)
.collect::<Vec<_>>()
.join("\n\n"),
lsp::HoverContents::Markup(contents) => contents.value,
};
// skip if contents empty
let contents = ui::Markdown::new(contents, editor.syn_loader.clone());
let popup = Popup::new(contents);
compositor.push(Box::new(popup));
}
},
);
}
// comments
fn toggle_comments(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let token = doc
.language_config()
.and_then(|lc| lc.comment_token.as_ref())
.map(|tc| tc.as_ref());
let transaction = comment::toggle_line_comments(doc.text(), doc.selection(view.id), token);
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
exit_select_mode(cx);
}
fn rotate_selections(cx: &mut Context, direction: Direction) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
let mut selection = doc.selection(view.id).clone();
let index = selection.primary_index();
let len = selection.len();
selection.set_primary_index(match direction {
Direction::Forward => (index + count) % len,
Direction::Backward => (index + (len.saturating_sub(count) % len)) % len,
});
doc.set_selection(view.id, selection);
}
fn rotate_selections_forward(cx: &mut Context) {
rotate_selections(cx, Direction::Forward)
}
fn rotate_selections_backward(cx: &mut Context) {
rotate_selections(cx, Direction::Backward)
}
fn rotate_selection_contents(cx: &mut Context, direction: Direction) {
let count = cx.count;
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id);
let mut fragments: Vec<_> = selection
.fragments(text)
.map(|fragment| Tendril::from_slice(&fragment))
.collect();
let group = count
.map(|count| count.get())
.unwrap_or(fragments.len()) // default to rotating everything as one group
.min(fragments.len());
for chunk in fragments.chunks_mut(group) {
// TODO: also modify main index
match direction {
Direction::Forward => chunk.rotate_right(1),
Direction::Backward => chunk.rotate_left(1),
};
}
let transaction = Transaction::change(
doc.text(),
selection
.ranges()
.iter()
.zip(fragments)
.map(|(range, fragment)| (range.from(), range.to(), Some(fragment))),
);
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
fn rotate_selection_contents_forward(cx: &mut Context) {
rotate_selection_contents(cx, Direction::Forward)
}
fn rotate_selection_contents_backward(cx: &mut Context) {
rotate_selection_contents(cx, Direction::Backward)
}
// tree sitter node selection
fn expand_selection(cx: &mut Context) {
let motion = |editor: &mut Editor| {
let (view, doc) = current!(editor);
if let Some(syntax) = doc.syntax() {
let text = doc.text().slice(..);
let selection = object::expand_selection(syntax, text, doc.selection(view.id));
doc.set_selection(view.id, selection);
}
};
motion(cx.editor);
cx.editor.last_motion = Some(Motion(Box::new(motion)));
}
fn match_brackets(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
if let Some(syntax) = doc.syntax() {
let text = doc.text().slice(..);
let selection = doc.selection(view.id).clone().transform(|range| {
if let Some(pos) =
match_brackets::find_matching_bracket_fuzzy(syntax, doc.text(), range.anchor)
{
range.put_cursor(text, pos, doc.mode == Mode::Select)
} else {
range
}
});
doc.set_selection(view.id, selection);
}
}
//
fn jump_forward(cx: &mut Context) {
let count = cx.count();
let view = view_mut!(cx.editor);
if let Some((id, selection)) = view.jumps.forward(count) {
view.doc = *id;
let selection = selection.clone();
let (view, doc) = current!(cx.editor); // refetch doc
doc.set_selection(view.id, selection);
align_view(doc, view, Align::Center);
};
}
fn jump_backward(cx: &mut Context) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
if let Some((id, selection)) = view.jumps.backward(view.id, doc, count) {
// manually set the alternate_file as we cannot use the Editor::switch function here.
if view.doc != *id {
view.last_accessed_doc = Some(view.doc)
}
view.doc = *id;
let selection = selection.clone();
let (view, doc) = current!(cx.editor); // refetch doc
doc.set_selection(view.id, selection);
align_view(doc, view, Align::Center);
};
}
fn rotate_view(cx: &mut Context) {
cx.editor.focus_next()
}
fn jump_view_right(cx: &mut Context) {
cx.editor.focus_right()
}
fn jump_view_left(cx: &mut Context) {
cx.editor.focus_left()
}
fn jump_view_up(cx: &mut Context) {
cx.editor.focus_up()
}
fn jump_view_down(cx: &mut Context) {
cx.editor.focus_down()
}
// split helper, clear it later
fn split(cx: &mut Context, action: Action) {
let (view, doc) = current!(cx.editor);
let id = doc.id();
let selection = doc.selection(view.id).clone();
let offset = view.offset;
cx.editor.switch(id, action);
// match the selection in the previous view
let (view, doc) = current!(cx.editor);
view.offset = offset;
doc.set_selection(view.id, selection);
}
fn hsplit(cx: &mut Context) {
split(cx, Action::HorizontalSplit);
}
fn vsplit(cx: &mut Context) {
split(cx, Action::VerticalSplit);
}
fn wclose(cx: &mut Context) {
if cx.editor.tree.views().count() == 1 {
if let Err(err) = cmd::buffers_remaining_impl(cx.editor) {
cx.editor.set_error(err.to_string());
return;
}
}
let view_id = view!(cx.editor).id;
// close current split
cx.editor.close(view_id);
}
fn wonly(cx: &mut Context) {
let views = cx
.editor
.tree
.views()
.map(|(v, focus)| (v.id, focus))
.collect::<Vec<_>>();
for (view_id, focus) in views {
if !focus {
cx.editor.close(view_id);
}
}
}
fn select_register(cx: &mut Context) {
cx.on_next_key(move |cx, event| {
if let Some(ch) = event.char() {
cx.editor.selected_register = Some(ch);
}
})
}
fn insert_register(cx: &mut Context) {
cx.on_next_key(move |cx, event| {
if let Some(ch) = event.char() {
cx.editor.selected_register = Some(ch);
paste_before(cx);
}
})
}
fn align_view_top(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
align_view(doc, view, Align::Top);
}
fn align_view_center(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
align_view(doc, view, Align::Center);
}
fn align_view_bottom(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
align_view(doc, view, Align::Bottom);
}
fn align_view_middle(cx: &mut Context) {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let pos = doc.selection(view.id).primary().cursor(text);
let pos = coords_at_pos(text, pos);
view.offset.col = pos
.col
.saturating_sub((view.inner_area().width as usize) / 2);
}
fn scroll_up(cx: &mut Context) {
scroll(cx, cx.count(), Direction::Backward);
}
fn scroll_down(cx: &mut Context) {
scroll(cx, cx.count(), Direction::Forward);
}
fn select_textobject_around(cx: &mut Context) {
select_textobject(cx, textobject::TextObject::Around);
}
fn select_textobject_inner(cx: &mut Context) {
select_textobject(cx, textobject::TextObject::Inside);
}
fn select_textobject(cx: &mut Context, objtype: textobject::TextObject) {
let count = cx.count();
cx.on_next_key(move |cx, event| {
if let Some(ch) = event.char() {
let textobject = move |editor: &mut Editor| {
let (view, doc) = current!(editor);
let text = doc.text().slice(..);
let textobject_treesitter = |obj_name: &str, range: Range| -> Range {
let (lang_config, syntax) = match doc.language_config().zip(doc.syntax()) {
Some(t) => t,
None => return range,
};
textobject::textobject_treesitter(
text,
range,
objtype,
obj_name,
syntax.tree().root_node(),
lang_config,
count,
)
};
let selection = doc.selection(view.id).clone().transform(|range| {
match ch {
'w' => textobject::textobject_word(text, range, objtype, count, false),
'W' => textobject::textobject_word(text, range, objtype, count, true),
'c' => textobject_treesitter("class", range),
'f' => textobject_treesitter("function", range),
'p' => textobject_treesitter("parameter", range),
'm' => {
let ch = text.char(range.cursor(text));
if !ch.is_ascii_alphanumeric() {
textobject::textobject_surround(text, range, objtype, ch, count)
} else {
range
}
}
// TODO: cancel new ranges if inconsistent surround matches across lines
ch if !ch.is_ascii_alphanumeric() => {
textobject::textobject_surround(text, range, objtype, ch, count)
}
_ => range,
}
});
doc.set_selection(view.id, selection);
};
textobject(cx.editor);
cx.editor.last_motion = Some(Motion(Box::new(textobject)));
}
})
}
fn surround_add(cx: &mut Context) {
cx.on_next_key(move |cx, event| {
if let Some(ch) = event.char() {
let (view, doc) = current!(cx.editor);
let selection = doc.selection(view.id);
let (open, close) = surround::get_pair(ch);
let mut changes = Vec::with_capacity(selection.len() * 2);
for range in selection.iter() {
changes.push((range.from(), range.from(), Some(Tendril::from_char(open))));
changes.push((range.to(), range.to(), Some(Tendril::from_char(close))));
}
let transaction = Transaction::change(doc.text(), changes.into_iter());
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
})
}
fn surround_replace(cx: &mut Context) {
let count = cx.count();
cx.on_next_key(move |cx, event| {
if let Some(from) = event.char() {
cx.on_next_key(move |cx, event| {
if let Some(to) = event.char() {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id);
let change_pos = match surround::get_surround_pos(text, selection, from, count)
{
Some(c) => c,
None => return,
};
let (open, close) = surround::get_pair(to);
let transaction = Transaction::change(
doc.text(),
change_pos.iter().enumerate().map(|(i, &pos)| {
(
pos,
pos + 1,
Some(Tendril::from_char(if i % 2 == 0 { open } else { close })),
)
}),
);
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
});
}
})
}
fn surround_delete(cx: &mut Context) {
let count = cx.count();
cx.on_next_key(move |cx, event| {
if let Some(ch) = event.char() {
let (view, doc) = current!(cx.editor);
let text = doc.text().slice(..);
let selection = doc.selection(view.id);
let change_pos = match surround::get_surround_pos(text, selection, ch, count) {
Some(c) => c,
None => return,
};
let transaction =
Transaction::change(doc.text(), change_pos.into_iter().map(|p| (p, p + 1, None)));
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
})
}
#[derive(Eq, PartialEq)]
enum ShellBehavior {
Replace,
Ignore,
Insert,
Append,
}
fn shell_pipe(cx: &mut Context) {
shell(cx, "pipe:".into(), ShellBehavior::Replace);
}
fn shell_pipe_to(cx: &mut Context) {
shell(cx, "pipe-to:".into(), ShellBehavior::Ignore);
}
fn shell_insert_output(cx: &mut Context) {
shell(cx, "insert-output:".into(), ShellBehavior::Insert);
}
fn shell_append_output(cx: &mut Context) {
shell(cx, "append-output:".into(), ShellBehavior::Append);
}
fn shell_keep_pipe(cx: &mut Context) {
let prompt = Prompt::new(
"keep-pipe:".into(),
Some('|'),
|_input: &str| Vec::new(),
move |cx: &mut compositor::Context, input: &str, event: PromptEvent| {
let shell = &cx.editor.config.shell;
if event != PromptEvent::Validate {
return;
}
if input.is_empty() {
return;
}
let (view, doc) = current!(cx.editor);
let selection = doc.selection(view.id);
let mut ranges = SmallVec::with_capacity(selection.len());
let old_index = selection.primary_index();
let mut index: Option<usize> = None;
let text = doc.text().slice(..);
for (i, range) in selection.ranges().iter().enumerate() {
let fragment = range.fragment(text);
let (_output, success) = match shell_impl(shell, input, Some(fragment.as_bytes())) {
Ok(result) => result,
Err(err) => {
cx.editor.set_error(err.to_string());
return;
}
};
// if the process exits successfully, keep the selection
if success {
ranges.push(*range);
if i >= old_index && index.is_none() {
index = Some(ranges.len() - 1);
}
}
}
if ranges.is_empty() {
cx.editor.set_error("No selections remaining".to_string());
return;
}
let index = index.unwrap_or_else(|| ranges.len() - 1);
doc.set_selection(view.id, Selection::new(ranges, index));
},
);
cx.push_layer(Box::new(prompt));
}
fn shell_impl(
shell: &[String],
cmd: &str,
input: Option<&[u8]>,
) -> anyhow::Result<(Tendril, bool)> {
use std::io::Write;
use std::process::{Command, Stdio};
ensure!(!shell.is_empty(), "No shell set");
let mut process = match Command::new(&shell[0])
.args(&shell[1..])
.arg(cmd)
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.spawn()
{
Ok(process) => process,
Err(e) => {
log::error!("Failed to start shell: {}", e);
return Err(e.into());
}
};
if let Some(input) = input {
let mut stdin = process.stdin.take().unwrap();
stdin.write_all(input)?;
}
let output = process.wait_with_output()?;
if !output.stderr.is_empty() {
log::error!("Shell error: {}", String::from_utf8_lossy(&output.stderr));
}
let tendril = Tendril::try_from_byte_slice(&output.stdout)
.map_err(|_| anyhow!("Process did not output valid UTF-8"))?;
Ok((tendril, output.status.success()))
}
fn shell(cx: &mut Context, prompt: Cow<'static, str>, behavior: ShellBehavior) {
let pipe = match behavior {
ShellBehavior::Replace | ShellBehavior::Ignore => true,
ShellBehavior::Insert | ShellBehavior::Append => false,
};
let prompt = Prompt::new(
prompt,
Some('|'),
|_input: &str| Vec::new(),
move |cx: &mut compositor::Context, input: &str, event: PromptEvent| {
let shell = &cx.editor.config.shell;
if event != PromptEvent::Validate {
return;
}
if input.is_empty() {
return;
}
let (view, doc) = current!(cx.editor);
let selection = doc.selection(view.id);
let mut changes = Vec::with_capacity(selection.len());
let text = doc.text().slice(..);
for range in selection.ranges() {
let fragment = range.fragment(text);
let (output, success) =
match shell_impl(shell, input, pipe.then(|| fragment.as_bytes())) {
Ok(result) => result,
Err(err) => {
cx.editor.set_error(err.to_string());
return;
}
};
if !success {
cx.editor.set_error("Command failed".to_string());
return;
}
let (from, to) = match behavior {
ShellBehavior::Replace => (range.from(), range.to()),
ShellBehavior::Insert => (range.from(), range.from()),
ShellBehavior::Append => (range.to(), range.to()),
_ => (range.from(), range.from()),
};
changes.push((from, to, Some(output)));
}
if behavior != ShellBehavior::Ignore {
let transaction = Transaction::change(doc.text(), changes.into_iter());
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
// after replace cursor may be out of bounds, do this to
// make sure cursor is in view and update scroll as well
view.ensure_cursor_in_view(doc, cx.editor.config.scrolloff);
},
);
cx.push_layer(Box::new(prompt));
}
fn suspend(_cx: &mut Context) {
#[cfg(not(windows))]
signal_hook::low_level::raise(signal_hook::consts::signal::SIGTSTP).unwrap();
}
fn add_newline_above(cx: &mut Context) {
add_newline_impl(cx, Open::Above);
}
fn add_newline_below(cx: &mut Context) {
add_newline_impl(cx, Open::Below)
}
fn add_newline_impl(cx: &mut Context, open: Open) {
let count = cx.count();
let (view, doc) = current!(cx.editor);
let selection = doc.selection(view.id);
let text = doc.text();
let slice = text.slice(..);
let changes = selection.into_iter().map(|range| {
let (start, end) = range.line_range(slice);
let line = match open {
Open::Above => start,
Open::Below => end + 1,
};
let pos = text.line_to_char(line);
(
pos,
pos,
Some(doc.line_ending.as_str().repeat(count).into()),
)
});
let transaction = Transaction::change(text, changes);
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
fn rename_symbol(cx: &mut Context) {
let prompt = Prompt::new(
"rename-to:".into(),
None,
|_input: &str| Vec::new(),
move |cx: &mut compositor::Context, input: &str, event: PromptEvent| {
if event != PromptEvent::Validate {
return;
}
log::debug!("renaming to: {:?}", input);
let (view, doc) = current!(cx.editor);
let language_server = match doc.language_server() {
Some(language_server) => language_server,
None => return,
};
let offset_encoding = language_server.offset_encoding();
let pos = pos_to_lsp_pos(
doc.text(),
doc.selection(view.id)
.primary()
.cursor(doc.text().slice(..)),
offset_encoding,
);
let task = language_server.rename_symbol(doc.identifier(), pos, input.to_string());
let edits = block_on(task).unwrap_or_default();
log::debug!("Edits from LSP: {:?}", edits);
apply_workspace_edit(cx.editor, offset_encoding, &edits);
},
);
cx.push_layer(Box::new(prompt));
}
/// Increment object under cursor by count.
fn increment(cx: &mut Context) {
increment_impl(cx, cx.count() as i64);
}
/// Decrement object under cursor by count.
fn decrement(cx: &mut Context) {
increment_impl(cx, -(cx.count() as i64));
}
/// Decrement object under cursor by `amount`.
fn increment_impl(cx: &mut Context, amount: i64) {
let (view, doc) = current!(cx.editor);
let selection = doc.selection(view.id);
let text = doc.text();
let changes = selection.ranges().iter().filter_map(|range| {
let incrementor: Option<Box<dyn Increment>> = if let Some(incrementor) =
DateIncrementor::from_range(text.slice(..), *range)
{
Some(Box::new(incrementor))
} else if let Some(incrementor) = NumberIncrementor::from_range(text.slice(..), *range) {
Some(Box::new(incrementor))
} else {
None
};
let (range, new_text) = incrementor?.increment(amount);
Some((range.from(), range.to(), Some(new_text)))
});
if changes.clone().count() > 0 {
let transaction = Transaction::change(doc.text(), changes);
let transaction = transaction.with_selection(selection.clone());
doc.apply(&transaction, view.id);
doc.append_changes_to_history(view.id);
}
}