From 8f0bcfe286d97dfff67bd924e11ca2b6ae1a63dc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bla=C5=BE=20Hrastnik?= Date: Fri, 30 Oct 2020 14:09:59 +0900 Subject: [PATCH] Introduce a command context that carries the executor and other fields. --- helix-term/src/application.rs | 29 ++- helix-view/src/commands.rs | 454 ++++++++++++++++++---------------- 2 files changed, 264 insertions(+), 219 deletions(-) diff --git a/helix-term/src/application.rs b/helix-term/src/application.rs index a4a3cf09..cacfde56 100644 --- a/helix-term/src/application.rs +++ b/helix-term/src/application.rs @@ -476,13 +476,24 @@ impl<'a> Application<'a> { match view.doc.mode() { Mode::Insert => { if let Some(command) = self.keymap[&Mode::Insert].get(&keys) { - command(view, 1); + let mut cx = helix_view::commands::Context { + view, + executor: self.executor, + count: 1, + }; + + command(&mut cx); } else if let KeyEvent { code: KeyCode::Char(c), .. } = event { - commands::insert::insert_char(view, c); + let mut cx = helix_view::commands::Context { + view, + executor: self.executor, + count: 1, + }; + commands::insert::insert_char(&mut cx, c); } view.ensure_cursor_in_view(); } @@ -544,7 +555,12 @@ impl<'a> Application<'a> { // HAXX: special casing for command mode } else if let Some(command) = self.keymap[&Mode::Normal].get(&keys) { - command(view, 1); + let mut cx = helix_view::commands::Context { + view, + executor: self.executor, + count: 1, + }; + command(&mut cx); // TODO: simplistic ensure cursor in view for now view.ensure_cursor_in_view(); @@ -552,7 +568,12 @@ impl<'a> Application<'a> { } mode => { if let Some(command) = self.keymap[&mode].get(&keys) { - command(view, 1); + let mut cx = helix_view::commands::Context { + view, + executor: self.executor, + count: 1, + }; + command(&mut cx); // TODO: simplistic ensure cursor in view for now view.ensure_cursor_in_view(); diff --git a/helix-view/src/commands.rs b/helix-view/src/commands.rs index f2e62044..26c7a190 100644 --- a/helix-view/src/commands.rs +++ b/helix-view/src/commands.rs @@ -14,44 +14,54 @@ use crate::{ view::{View, PADDING}, }; +pub struct Context<'a, 'b> { + pub count: usize, + pub view: &'a mut View, + pub executor: &'a smol::Executor<'b>, +} + /// A command is a function that takes the current state and a count, and does a side-effect on the /// state (usually by creating and applying a transaction). -pub type Command = fn(view: &mut View, count: usize); +pub type Command = fn(cx: &mut Context); -pub fn move_char_left(view: &mut View, count: usize) { +pub fn move_char_left(cx: &mut Context) { let selection = - view.doc + cx.view + .doc .state - .move_selection(Direction::Backward, Granularity::Character, count); - view.doc.set_selection(selection); + .move_selection(Direction::Backward, Granularity::Character, cx.count); + cx.view.doc.set_selection(selection); } -pub fn move_char_right(view: &mut View, count: usize) { +pub fn move_char_right(cx: &mut Context) { let selection = - view.doc + cx.view + .doc .state - .move_selection(Direction::Forward, Granularity::Character, count); - view.doc.set_selection(selection); + .move_selection(Direction::Forward, Granularity::Character, cx.count); + cx.view.doc.set_selection(selection); } -pub fn move_line_up(view: &mut View, count: usize) { - let selection = view - .doc - .state - .move_selection(Direction::Backward, Granularity::Line, count); - view.doc.set_selection(selection); +pub fn move_line_up(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .move_selection(Direction::Backward, Granularity::Line, cx.count); + cx.view.doc.set_selection(selection); } -pub fn move_line_down(view: &mut View, count: usize) { - let selection = view - .doc - .state - .move_selection(Direction::Forward, Granularity::Line, count); - view.doc.set_selection(selection); +pub fn move_line_down(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .move_selection(Direction::Forward, Granularity::Line, cx.count); + cx.view.doc.set_selection(selection); } -pub fn move_line_end(view: &mut View, _count: usize) { - let lines = selection_lines(&view.doc.state); +pub fn move_line_end(cx: &mut Context) { + let lines = selection_lines(&cx.view.doc.state); let positions = lines .into_iter() @@ -60,78 +70,78 @@ pub fn move_line_end(view: &mut View, _count: usize) { // Line end is pos at the start of next line - 1 // subtract another 1 because the line ends with \n - view.doc.text().line_to_char(index + 1).saturating_sub(2) + cx.view.doc.text().line_to_char(index + 1).saturating_sub(2) }) .map(|pos| Range::new(pos, pos)); let selection = Selection::new(positions.collect(), 0); - view.doc.set_selection(selection); + cx.view.doc.set_selection(selection); } -pub fn move_line_start(view: &mut View, _count: usize) { - let lines = selection_lines(&view.doc.state); +pub fn move_line_start(cx: &mut Context) { + let lines = selection_lines(&cx.view.doc.state); let positions = lines .into_iter() .map(|index| { // adjust all positions to the start of the line. - view.doc.text().line_to_char(index) + cx.view.doc.text().line_to_char(index) }) .map(|pos| Range::new(pos, pos)); let selection = Selection::new(positions.collect(), 0); - view.doc.set_selection(selection); + cx.view.doc.set_selection(selection); } -pub fn move_next_word_start(view: &mut View, count: usize) { - let pos = view.doc.state.move_pos( - view.doc.selection().cursor(), +pub fn move_next_word_start(cx: &mut Context) { + let pos = cx.view.doc.state.move_pos( + cx.view.doc.selection().cursor(), Direction::Forward, Granularity::Word, - count, + cx.count, ); - view.doc.set_selection(Selection::point(pos)); + cx.view.doc.set_selection(Selection::point(pos)); } -pub fn move_prev_word_start(view: &mut View, count: usize) { - let pos = view.doc.state.move_pos( - view.doc.selection().cursor(), +pub fn move_prev_word_start(cx: &mut Context) { + let pos = cx.view.doc.state.move_pos( + cx.view.doc.selection().cursor(), Direction::Backward, Granularity::Word, - count, + cx.count, ); - view.doc.set_selection(Selection::point(pos)); + cx.view.doc.set_selection(Selection::point(pos)); } -pub fn move_next_word_end(view: &mut View, count: usize) { +pub fn move_next_word_end(cx: &mut Context) { let pos = State::move_next_word_end( - &view.doc.text().slice(..), - view.doc.selection().cursor(), - count, + &cx.view.doc.text().slice(..), + cx.view.doc.selection().cursor(), + cx.count, ); - view.doc.set_selection(Selection::point(pos)); + cx.view.doc.set_selection(Selection::point(pos)); } -pub fn move_file_start(view: &mut View, _count: usize) { - view.doc.set_selection(Selection::point(0)); +pub fn move_file_start(cx: &mut Context) { + cx.view.doc.set_selection(Selection::point(0)); - view.doc.mode = Mode::Normal; + cx.view.doc.mode = Mode::Normal; } -pub fn move_file_end(view: &mut View, _count: usize) { - let text = &view.doc.text(); +pub fn move_file_end(cx: &mut Context) { + let text = &cx.view.doc.text(); let last_line = text.line_to_char(text.len_lines().saturating_sub(2)); - view.doc.set_selection(Selection::point(last_line)); + cx.view.doc.set_selection(Selection::point(last_line)); - view.doc.mode = Mode::Normal; + cx.view.doc.mode = Mode::Normal; } -pub fn check_cursor_in_view(view: &mut View) -> bool { +pub fn check_cursor_in_view(view: &View) -> bool { let cursor = view.doc.selection().cursor(); let line = view.doc.text().char_to_line(cursor); let document_end = view.first_line + view.size.1.saturating_sub(1) as usize; @@ -142,172 +152,182 @@ pub fn check_cursor_in_view(view: &mut View) -> bool { true } -pub fn page_up(view: &mut View, _count: usize) { - if view.first_line < PADDING { +pub fn page_up(cx: &mut Context) { + if cx.view.first_line < PADDING { return; } - view.first_line = view.first_line.saturating_sub(view.size.1 as usize); + cx.view.first_line = cx.view.first_line.saturating_sub(cx.view.size.1 as usize); - if !check_cursor_in_view(view) { - let text = view.doc.text(); - let pos = text.line_to_char(view.last_line().saturating_sub(PADDING)); - view.doc.set_selection(Selection::point(pos)); + if !check_cursor_in_view(cx.view) { + let text = cx.view.doc.text(); + let pos = text.line_to_char(cx.view.last_line().saturating_sub(PADDING)); + cx.view.doc.set_selection(Selection::point(pos)); } } -pub fn page_down(view: &mut View, _count: usize) { - view.first_line += view.size.1 as usize + PADDING; +pub fn page_down(cx: &mut Context) { + cx.view.first_line += cx.view.size.1 as usize + PADDING; - if view.first_line < view.doc.text().len_lines() { - let text = view.doc.text(); - let pos = text.line_to_char(view.first_line as usize); - view.doc.set_selection(Selection::point(pos)); + if cx.view.first_line < cx.view.doc.text().len_lines() { + let text = cx.view.doc.text(); + let pos = text.line_to_char(cx.view.first_line as usize); + cx.view.doc.set_selection(Selection::point(pos)); } } -pub fn half_page_up(view: &mut View, _count: usize) { - if view.first_line < PADDING { +pub fn half_page_up(cx: &mut Context) { + if cx.view.first_line < PADDING { return; } - view.first_line = view.first_line.saturating_sub(view.size.1 as usize / 2); + cx.view.first_line = cx + .view + .first_line + .saturating_sub(cx.view.size.1 as usize / 2); - if !check_cursor_in_view(view) { - let text = &view.doc.text(); - let pos = text.line_to_char(view.last_line() - PADDING); - view.doc.set_selection(Selection::point(pos)); + if !check_cursor_in_view(cx.view) { + let text = &cx.view.doc.text(); + let pos = text.line_to_char(cx.view.last_line() - PADDING); + cx.view.doc.set_selection(Selection::point(pos)); } } -pub fn half_page_down(view: &mut View, _count: usize) { - let lines = view.doc.text().len_lines(); - if view.first_line < lines.saturating_sub(view.size.1 as usize) { - view.first_line += view.size.1 as usize / 2; +pub fn half_page_down(cx: &mut Context) { + let lines = cx.view.doc.text().len_lines(); + if cx.view.first_line < lines.saturating_sub(cx.view.size.1 as usize) { + cx.view.first_line += cx.view.size.1 as usize / 2; } - if !check_cursor_in_view(view) { - let text = view.doc.text(); - let pos = text.line_to_char(view.first_line as usize); - view.doc.set_selection(Selection::point(pos)); + if !check_cursor_in_view(cx.view) { + let text = cx.view.doc.text(); + let pos = text.line_to_char(cx.view.first_line as usize); + cx.view.doc.set_selection(Selection::point(pos)); } } // avoid select by default by having a visual mode switch that makes movements into selects -pub fn extend_char_left(view: &mut View, count: usize) { +pub fn extend_char_left(cx: &mut Context) { let selection = - view.doc + cx.view + .doc .state - .extend_selection(Direction::Backward, Granularity::Character, count); - view.doc.set_selection(selection); + .extend_selection(Direction::Backward, Granularity::Character, cx.count); + cx.view.doc.set_selection(selection); } -pub fn extend_char_right(view: &mut View, count: usize) { +pub fn extend_char_right(cx: &mut Context) { let selection = - view.doc + cx.view + .doc .state - .extend_selection(Direction::Forward, Granularity::Character, count); - view.doc.set_selection(selection); + .extend_selection(Direction::Forward, Granularity::Character, cx.count); + cx.view.doc.set_selection(selection); } -pub fn extend_line_up(view: &mut View, count: usize) { - let selection = view - .doc - .state - .extend_selection(Direction::Backward, Granularity::Line, count); - view.doc.set_selection(selection); +pub fn extend_line_up(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .extend_selection(Direction::Backward, Granularity::Line, cx.count); + cx.view.doc.set_selection(selection); } -pub fn extend_line_down(view: &mut View, count: usize) { - let selection = view - .doc - .state - .extend_selection(Direction::Forward, Granularity::Line, count); - view.doc.set_selection(selection); +pub fn extend_line_down(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .extend_selection(Direction::Forward, Granularity::Line, cx.count); + cx.view.doc.set_selection(selection); } -pub fn split_selection_on_newline(view: &mut View, _count: usize) { - let text = &view.doc.text().slice(..); +pub fn split_selection_on_newline(cx: &mut Context) { + let text = &cx.view.doc.text().slice(..); // only compile the regex once #[allow(clippy::trivial_regex)] static REGEX: Lazy = Lazy::new(|| Regex::new(r"\n").unwrap()); - let selection = selection::split_on_matches(text, view.doc.selection(), ®EX); - view.doc.set_selection(selection); + let selection = selection::split_on_matches(text, cx.view.doc.selection(), ®EX); + cx.view.doc.set_selection(selection); } -pub fn select_line(view: &mut View, _count: usize) { +pub fn select_line(cx: &mut Context) { // TODO: count - let pos = view.doc.selection().primary(); - let text = view.doc.text(); + let pos = cx.view.doc.selection().primary(); + let text = cx.view.doc.text(); let line = text.char_to_line(pos.head); let start = text.line_to_char(line); let end = text.line_to_char(line + 1).saturating_sub(1); - view.doc.set_selection(Selection::single(start, end)); + cx.view.doc.set_selection(Selection::single(start, end)); } -pub fn delete_selection(view: &mut View, _count: usize) { - let transaction = Transaction::change_by_selection(&view.doc.state, |range| { +pub fn delete_selection(cx: &mut Context) { + let transaction = Transaction::change_by_selection(&cx.view.doc.state, |range| { (range.from(), range.to() + 1, None) }); - view.doc.apply(&transaction); + cx.view.doc.apply(&transaction); - append_changes_to_history(view); + append_changes_to_history(cx); } -pub fn change_selection(view: &mut View, count: usize) { - delete_selection(view, count); - insert_mode(view, count); +pub fn change_selection(cx: &mut Context) { + delete_selection(cx); + insert_mode(cx); } -pub fn collapse_selection(view: &mut View, _count: usize) { - let selection = view +pub fn collapse_selection(cx: &mut Context) { + let selection = cx + .view .doc .selection() .transform(|range| Range::new(range.head, range.head)); - view.doc.set_selection(selection); + cx.view.doc.set_selection(selection); } -pub fn flip_selections(view: &mut View, _count: usize) { - let selection = view +pub fn flip_selections(cx: &mut Context) { + let selection = cx + .view .doc .selection() .transform(|range| Range::new(range.head, range.anchor)); - view.doc.set_selection(selection); + cx.view.doc.set_selection(selection); } -fn enter_insert_mode(view: &mut View) { - view.doc.mode = Mode::Insert; +fn enter_insert_mode(cx: &mut Context) { + cx.view.doc.mode = Mode::Insert; - append_changes_to_history(view); + append_changes_to_history(cx); } // inserts at the start of each selection -pub fn insert_mode(view: &mut View, _count: usize) { - enter_insert_mode(view); +pub fn insert_mode(cx: &mut Context) { + enter_insert_mode(cx); - let selection = view + let selection = cx + .view .doc .selection() .transform(|range| Range::new(range.to(), range.from())); - view.doc.set_selection(selection); + cx.view.doc.set_selection(selection); } // inserts at the end of each selection -pub fn append_mode(view: &mut View, _count: usize) { - enter_insert_mode(view); - view.doc.restore_cursor = true; +pub fn append_mode(cx: &mut Context) { + enter_insert_mode(cx); + cx.view.doc.restore_cursor = true; // TODO: as transaction - let text = &view.doc.text().slice(..); - let selection = view.doc.selection().transform(|range| { + let text = &cx.view.doc.text().slice(..); + let selection = cx.view.doc.selection().transform(|range| { // TODO: to() + next char Range::new( range.from(), graphemes::next_grapheme_boundary(text, range.to()), ) }); - view.doc.set_selection(selection); + cx.view.doc.set_selection(selection); } // TODO: I, A, o and O can share a lot of the primitives. @@ -332,30 +352,30 @@ fn selection_lines(state: &State) -> Vec { } // I inserts at the start of each line with a selection -pub fn prepend_to_line(view: &mut View, count: usize) { - enter_insert_mode(view); +pub fn prepend_to_line(cx: &mut Context) { + enter_insert_mode(cx); - move_line_start(view, count); + move_line_start(cx); } // A inserts at the end of each line with a selection -pub fn append_to_line(view: &mut View, count: usize) { - enter_insert_mode(view); +pub fn append_to_line(cx: &mut Context) { + enter_insert_mode(cx); - move_line_end(view, count); + move_line_end(cx); } // o inserts a new line after each line with a selection -pub fn open_below(view: &mut View, _count: usize) { - enter_insert_mode(view); +pub fn open_below(cx: &mut Context) { + enter_insert_mode(cx); - let lines = selection_lines(&view.doc.state); + let lines = selection_lines(&cx.view.doc.state); let positions: Vec<_> = lines .into_iter() .map(|index| { // adjust all positions to the end of the line/start of the next one. - view.doc.text().line_to_char(index + 1) + cx.view.doc.text().line_to_char(index + 1) }) .collect(); @@ -376,82 +396,85 @@ pub fn open_below(view: &mut View, _count: usize) { 0, ); - let transaction = Transaction::change(&view.doc.state, changes).with_selection(selection); + let transaction = Transaction::change(&cx.view.doc.state, changes).with_selection(selection); - view.doc.apply(&transaction); + cx.view.doc.apply(&transaction); } // O inserts a new line before each line with a selection -fn append_changes_to_history(view: &mut View) { - if view.doc.changes.is_empty() { +fn append_changes_to_history(cx: &mut Context) { + if cx.view.doc.changes.is_empty() { return; } - let new_changeset = ChangeSet::new(view.doc.text()); - let changes = std::mem::replace(&mut view.doc.changes, new_changeset); + let new_changeset = ChangeSet::new(cx.view.doc.text()); + let changes = std::mem::replace(&mut cx.view.doc.changes, new_changeset); // Instead of doing this messy merge we could always commit, and based on transaction // annotations either add a new layer or compose into the previous one. - let transaction = Transaction::from(changes).with_selection(view.doc.selection().clone()); + let transaction = Transaction::from(changes).with_selection(cx.view.doc.selection().clone()); // increment document version // TODO: needs to happen on undo/redo too - view.doc.version += 1; + cx.view.doc.version += 1; // TODO: trigger lsp/documentDidChange with changes // HAXX: we need to reconstruct the state as it was before the changes.. - let old_state = std::mem::replace(&mut view.doc.old_state, view.doc.state.clone()); + let old_state = std::mem::replace(&mut cx.view.doc.old_state, cx.view.doc.state.clone()); // TODO: take transaction by value? - view.doc.history.commit_revision(&transaction, &old_state); + cx.view + .doc + .history + .commit_revision(&transaction, &old_state); // TODO: notify LSP of changes } -pub fn normal_mode(view: &mut View, _count: usize) { - view.doc.mode = Mode::Normal; +pub fn normal_mode(cx: &mut Context) { + cx.view.doc.mode = Mode::Normal; - append_changes_to_history(view); + append_changes_to_history(cx); // if leaving append mode, move cursor back by 1 - if view.doc.restore_cursor { - let text = &view.doc.text().slice(..); - let selection = view.doc.selection().transform(|range| { + if cx.view.doc.restore_cursor { + let text = &cx.view.doc.text().slice(..); + let selection = cx.view.doc.selection().transform(|range| { Range::new( range.from(), graphemes::prev_grapheme_boundary(text, range.to()), ) }); - view.doc.set_selection(selection); + cx.view.doc.set_selection(selection); - view.doc.restore_cursor = false; + cx.view.doc.restore_cursor = false; } } -pub fn goto_mode(view: &mut View, _count: usize) { - view.doc.mode = Mode::Goto; +pub fn goto_mode(cx: &mut Context) { + cx.view.doc.mode = Mode::Goto; } // NOTE: Transactions in this module get appended to history when we switch back to normal mode. pub mod insert { use super::*; // TODO: insert means add text just before cursor, on exit we should be on the last letter. - pub fn insert_char(view: &mut View, c: char) { + pub fn insert_char(cx: &mut Context, c: char) { let c = Tendril::from_char(c); - let transaction = Transaction::insert(&view.doc.state, c); + let transaction = Transaction::insert(&cx.view.doc.state, c); - view.doc.apply(&transaction); + cx.view.doc.apply(&transaction); } - pub fn insert_tab(view: &mut View, _count: usize) { - insert_char(view, '\t'); + pub fn insert_tab(cx: &mut Context) { + insert_char(cx, '\t'); } - pub fn insert_newline(view: &mut View, _count: usize) { - let transaction = Transaction::change_by_selection(&view.doc.state, |range| { + pub fn insert_newline(cx: &mut Context) { + let transaction = Transaction::change_by_selection(&cx.view.doc.state, |range| { let indent_level = helix_core::indent::suggested_indent_for_pos( - view.doc.syntax.as_ref(), - &view.doc.state, + cx.view.doc.syntax.as_ref(), + &cx.view.doc.state, range.head, ); let indent = " ".repeat(TAB_WIDTH).repeat(indent_level); @@ -460,32 +483,32 @@ pub mod insert { text.push_str(&indent); (range.head, range.head, Some(text.into())) }); - view.doc.apply(&transaction); + cx.view.doc.apply(&transaction); } // TODO: handle indent-aware delete - pub fn delete_char_backward(view: &mut View, count: usize) { - let text = &view.doc.text().slice(..); - let transaction = Transaction::change_by_selection(&view.doc.state, |range| { + pub fn delete_char_backward(cx: &mut Context) { + let text = &cx.view.doc.text().slice(..); + let transaction = Transaction::change_by_selection(&cx.view.doc.state, |range| { ( - graphemes::nth_prev_grapheme_boundary(text, range.head, count), + graphemes::nth_prev_grapheme_boundary(text, range.head, cx.count), range.head, None, ) }); - view.doc.apply(&transaction); + cx.view.doc.apply(&transaction); } - pub fn delete_char_forward(view: &mut View, count: usize) { - let text = &view.doc.text().slice(..); - let transaction = Transaction::change_by_selection(&view.doc.state, |range| { + pub fn delete_char_forward(cx: &mut Context) { + let text = &cx.view.doc.text().slice(..); + let transaction = Transaction::change_by_selection(&cx.view.doc.state, |range| { ( range.head, - graphemes::nth_next_grapheme_boundary(text, range.head, count), + graphemes::nth_next_grapheme_boundary(text, range.head, cx.count), None, ) }); - view.doc.apply(&transaction); + cx.view.doc.apply(&transaction); } } @@ -495,31 +518,32 @@ pub fn insert_char_prompt(prompt: &mut Prompt, c: char) { // Undo / Redo -pub fn undo(view: &mut View, _count: usize) { - if let Some(revert) = view.doc.history.undo() { - view.doc.version += 1; - view.doc.apply(&revert); +pub fn undo(cx: &mut Context) { + if let Some(revert) = cx.view.doc.history.undo() { + cx.view.doc.version += 1; + cx.view.doc.apply(&revert); } // TODO: each command could simply return a Option, then the higher level handles storing it? } -pub fn redo(view: &mut View, _count: usize) { - if let Some(transaction) = view.doc.history.redo() { - view.doc.version += 1; - view.doc.apply(&transaction); +pub fn redo(cx: &mut Context) { + if let Some(transaction) = cx.view.doc.history.redo() { + cx.view.doc.version += 1; + cx.view.doc.apply(&transaction); } } // Yank / Paste -pub fn yank(view: &mut View, _count: usize) { +pub fn yank(cx: &mut Context) { // TODO: should selections be made end inclusive? - let values = view + let values = cx + .view .doc .state .selection() - .fragments(&view.doc.text().slice(..)) + .fragments(&cx.view.doc.text().slice(..)) .map(|cow| cow.into_owned()) .collect(); @@ -528,7 +552,7 @@ pub fn yank(view: &mut View, _count: usize) { register::set(reg, values); } -pub fn paste(view: &mut View, _count: usize) { +pub fn paste(cx: &mut Context) { // TODO: allow specifying reg let reg = '"'; if let Some(values) = register::get(reg) { @@ -560,19 +584,19 @@ pub fn paste(view: &mut View, _count: usize) { let transaction = if linewise { // paste on the next line // TODO: can simply take a range + modifier and compute the right pos without ifs - let text = view.doc.text(); - Transaction::change_by_selection(&view.doc.state, |range| { + let text = cx.view.doc.text(); + Transaction::change_by_selection(&cx.view.doc.state, |range| { let line_end = text.line_to_char(text.char_to_line(range.head) + 1); (line_end, line_end, Some(values.next().unwrap())) }) } else { - Transaction::change_by_selection(&view.doc.state, |range| { + Transaction::change_by_selection(&cx.view.doc.state, |range| { (range.head + 1, range.head + 1, Some(values.next().unwrap())) }) }; - view.doc.apply(&transaction); - append_changes_to_history(view); + cx.view.doc.apply(&transaction); + append_changes_to_history(cx); } } @@ -593,29 +617,29 @@ fn get_lines(view: &View) -> Vec { lines } -pub fn indent(view: &mut View, _count: usize) { - let lines = get_lines(view); +pub fn indent(cx: &mut Context) { + let lines = get_lines(cx.view); // Indent by one level let indent = Tendril::from(" ".repeat(TAB_WIDTH)); let transaction = Transaction::change( - &view.doc.state, + &cx.view.doc.state, lines.into_iter().map(|line| { - let pos = view.doc.text().line_to_char(line); + let pos = cx.view.doc.text().line_to_char(line); (pos, pos, Some(indent.clone())) }), ); - view.doc.apply(&transaction); - append_changes_to_history(view); + cx.view.doc.apply(&transaction); + append_changes_to_history(cx); } -pub fn unindent(view: &mut View, _count: usize) { - let lines = get_lines(view); +pub fn unindent(cx: &mut Context) { + let lines = get_lines(cx.view); let mut changes = Vec::with_capacity(lines.len()); for line_idx in lines { - let line = view.doc.text().line(line_idx); + let line = cx.view.doc.text().line(line_idx); let mut width = 0; for ch in line.chars() { @@ -631,18 +655,18 @@ pub fn unindent(view: &mut View, _count: usize) { } if width > 0 { - let start = view.doc.text().line_to_char(line_idx); + let start = cx.view.doc.text().line_to_char(line_idx); changes.push((start, start + width, None)) } } - let transaction = Transaction::change(&view.doc.state, changes.into_iter()); + let transaction = Transaction::change(&cx.view.doc.state, changes.into_iter()); - view.doc.apply(&transaction); - append_changes_to_history(view); + cx.view.doc.apply(&transaction); + append_changes_to_history(cx); } -pub fn indent_selection(_view: &mut View, _count: usize) { +pub fn indent_selection(_cx: &mut Context) { // loop over each line and recompute proper indentation unimplemented!() }