Auto pairs selection (#1254)
* use auto pairs with selections Previously, the auto pairs code was converting the user selection into its cursor form, and setting the transaction's selection to that cursor. This has the effect of destroying the user's selection if they type a pair character that gets auto completed. This fixes the code to work with the user's selection, inserting auto pairs where appropriate, but either keeping or extending the user's selection. * use movement::Direction instead of bool * assume 0-width cursor is forward
This commit is contained in:
Skyler Hawthorne
GitHub
parent
1c082cb4ef
commit
5b4540fc2d
2 changed files with 275 additions and 80 deletions
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@ -1,7 +1,7 @@
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//! When typing the opening character of one of the possible pairs defined below,
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//! this module provides the functionality to insert the paired closing character.
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use crate::{Range, Rope, Selection, Tendril, Transaction};
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use crate::{movement::Direction, Range, Rope, Selection, Tendril, Transaction};
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use log::debug;
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use smallvec::SmallVec;
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@ -30,7 +30,6 @@ const CLOSE_BEFORE: &str = ")]}'\":;,> \n\r\u{000B}\u{000C}\u{0085}\u{2028}\u{20
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// [TODO]
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// * delete implementation where it erases the whole bracket (|) -> |
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// * do not reduce to cursors; use whole selections, and surround with pair
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// * change to multi character pairs to handle cases like placing the cursor in the
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// middle of triple quotes, and more exotic pairs like Jinja's {% %}
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@ -38,20 +37,18 @@ const CLOSE_BEFORE: &str = ")]}'\":;,> \n\r\u{000B}\u{000C}\u{0085}\u{2028}\u{20
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pub fn hook(doc: &Rope, selection: &Selection, ch: char) -> Option<Transaction> {
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debug!("autopairs hook selection: {:#?}", selection);
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let cursors = selection.clone().cursors(doc.slice(..));
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for &(open, close) in PAIRS {
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if open == ch {
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if open == close {
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return Some(handle_same(doc, &cursors, open, CLOSE_BEFORE, OPEN_BEFORE));
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return Some(handle_same(doc, selection, open, CLOSE_BEFORE, OPEN_BEFORE));
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} else {
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return Some(handle_open(doc, &cursors, open, close, CLOSE_BEFORE));
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return Some(handle_open(doc, selection, open, close, CLOSE_BEFORE));
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}
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}
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if close == ch {
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// && char_at pos == close
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return Some(handle_close(doc, &cursors, open, close));
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return Some(handle_close(doc, selection, open, close));
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}
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}
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@ -66,6 +63,36 @@ fn prev_char(doc: &Rope, pos: usize) -> Option<char> {
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doc.get_char(pos - 1)
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}
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/// calculate what the resulting range should be for an auto pair insertion
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fn get_next_range(
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start_range: &Range,
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offset: usize,
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typed_char: char,
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len_inserted: usize,
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) -> Range {
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let end_head = start_range.head + offset + typed_char.len_utf8();
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let end_anchor = match (start_range.len(), start_range.direction()) {
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// if we have a zero width cursor, it shifts to the same number
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(0, _) => end_head,
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// if we are inserting for a regular one-width cursor, the anchor
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// moves with the head
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(1, Direction::Forward) => end_head - 1,
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(1, Direction::Backward) => end_head + 1,
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// if we are appending, the anchor stays where it is; only offset
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// for multiple range insertions
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(_, Direction::Forward) => start_range.anchor + offset,
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// when we are inserting in front of a selection, we need to move
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// the anchor over by however many characters were inserted overall
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(_, Direction::Backward) => start_range.anchor + offset + len_inserted,
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};
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Range::new(end_anchor, end_head)
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}
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fn handle_open(
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doc: &Rope,
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selection: &Selection,
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@ -74,36 +101,32 @@ fn handle_open(
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close_before: &str,
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) -> Transaction {
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let mut end_ranges = SmallVec::with_capacity(selection.len());
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let mut offs = 0;
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let transaction = Transaction::change_by_selection(doc, selection, |start_range| {
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let start_head = start_range.head;
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let cursor = start_range.cursor(doc.slice(..));
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let next_char = doc.get_char(cursor);
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let len_inserted;
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let next = doc.get_char(start_head);
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let end_head = start_head + offs + open.len_utf8();
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let end_anchor = if start_range.is_empty() {
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end_head
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} else {
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start_range.anchor + offs
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};
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end_ranges.push(Range::new(end_anchor, end_head));
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match next {
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let change = match next_char {
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Some(ch) if !close_before.contains(ch) => {
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offs += open.len_utf8();
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(start_head, start_head, Some(Tendril::from_char(open)))
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len_inserted = open.len_utf8();
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(cursor, cursor, Some(Tendril::from_char(open)))
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}
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// None | Some(ch) if close_before.contains(ch) => {}
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_ => {
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// insert open & close
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let pair = Tendril::from_iter([open, close]);
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offs += open.len_utf8() + close.len_utf8();
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(start_head, start_head, Some(pair))
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len_inserted = open.len_utf8() + close.len_utf8();
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(cursor, cursor, Some(pair))
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}
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}
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};
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let next_range = get_next_range(start_range, offs, open, len_inserted);
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end_ranges.push(next_range);
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offs += len_inserted;
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change
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});
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let t = transaction.with_selection(Selection::new(end_ranges, selection.primary_index()));
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@ -117,28 +140,28 @@ fn handle_close(doc: &Rope, selection: &Selection, _open: char, close: char) ->
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let mut offs = 0;
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let transaction = Transaction::change_by_selection(doc, selection, |start_range| {
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let start_head = start_range.head;
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let next = doc.get_char(start_head);
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let end_head = start_head + offs + close.len_utf8();
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let cursor = start_range.cursor(doc.slice(..));
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let next_char = doc.get_char(cursor);
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let mut len_inserted = 0;
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let end_anchor = if start_range.is_empty() {
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end_head
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let change = if next_char == Some(close) {
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// return transaction that moves past close
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(cursor, cursor, None) // no-op
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} else {
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start_range.anchor + offs
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len_inserted += close.len_utf8();
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(cursor, cursor, Some(Tendril::from_char(close)))
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};
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end_ranges.push(Range::new(end_anchor, end_head));
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let next_range = get_next_range(start_range, offs, close, len_inserted);
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end_ranges.push(next_range);
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offs += len_inserted;
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if next == Some(close) {
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// return transaction that moves past close
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(start_head, start_head, None) // no-op
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} else {
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offs += close.len_utf8();
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(start_head, start_head, Some(Tendril::from_char(close)))
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}
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change
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});
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transaction.with_selection(Selection::new(end_ranges, selection.primary_index()))
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let t = transaction.with_selection(Selection::new(end_ranges, selection.primary_index()));
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debug!("auto pair transaction: {:#?}", t);
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t
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}
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/// handle cases where open and close is the same, or in triples ("""docstring""")
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@ -154,42 +177,41 @@ fn handle_same(
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let mut offs = 0;
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let transaction = Transaction::change_by_selection(doc, selection, |start_range| {
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let start_head = start_range.head;
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let end_head = start_head + offs + token.len_utf8();
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let cursor = start_range.cursor(doc.slice(..));
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let mut len_inserted = 0;
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// if selection, retain anchor, if cursor, move over
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let end_anchor = if start_range.is_empty() {
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end_head
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} else {
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start_range.anchor + offs
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};
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let next_char = doc.get_char(cursor);
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let prev_char = prev_char(doc, cursor);
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end_ranges.push(Range::new(end_anchor, end_head));
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let next = doc.get_char(start_head);
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let prev = prev_char(doc, start_head);
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if next == Some(token) {
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let change = if next_char == Some(token) {
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// return transaction that moves past close
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(start_head, start_head, None) // no-op
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(cursor, cursor, None) // no-op
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} else {
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let mut pair = Tendril::with_capacity(2 * token.len_utf8() as u32);
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pair.push_char(token);
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// for equal pairs, don't insert both open and close if either
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// side has a non-pair char
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if (next.is_none() || close_before.contains(next.unwrap()))
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&& (prev.is_none() || open_before.contains(prev.unwrap()))
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if (next_char.is_none() || close_before.contains(next_char.unwrap()))
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&& (prev_char.is_none() || open_before.contains(prev_char.unwrap()))
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{
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pair.push_char(token);
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}
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offs += pair.len();
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(start_head, start_head, Some(pair))
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}
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len_inserted += pair.len();
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(cursor, cursor, Some(pair))
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};
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let next_range = get_next_range(start_range, offs, token, len_inserted);
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end_ranges.push(next_range);
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offs += len_inserted;
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change
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});
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transaction.with_selection(Selection::new(end_ranges, selection.primary_index()))
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let t = transaction.with_selection(Selection::new(end_ranges, selection.primary_index()));
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debug!("auto pair transaction: {:#?}", t);
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t
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}
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#[cfg(test)]
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@ -252,7 +274,20 @@ mod test {
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&Selection::single(1, 0),
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PAIRS,
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|open, close| format!("{}{}", open, close),
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&Selection::single(1, 1),
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&Selection::single(2, 1),
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);
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}
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/// [] -> append ( -> ([])
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#[test]
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fn test_append_blank() {
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test_hooks_with_pairs(
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// this is what happens when you have a totally blank document and then append
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&Rope::from("\n\n"),
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&Selection::single(0, 2),
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PAIRS,
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|open, close| format!("\n{}{}\n", open, close),
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&Selection::single(0, 3),
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);
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}
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@ -276,26 +311,50 @@ mod test {
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)
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},
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&Selection::new(
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smallvec!(Range::point(1), Range::point(4), Range::point(7),),
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smallvec!(Range::new(2, 1), Range::new(5, 4), Range::new(8, 7),),
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0,
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),
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);
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}
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// [TODO] broken until it works with selections
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/// fo[o] -> append ( -> fo[o(])
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#[ignore]
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#[test]
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fn test_append() {
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test_hooks_with_pairs(
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&Rope::from("foo"),
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&Rope::from("foo\n"),
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&Selection::single(2, 4),
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PAIRS,
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|open, close| format!("foo{}{}", open, close),
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differing_pairs(),
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|open, close| format!("foo{}{}\n", open, close),
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&Selection::single(2, 5),
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);
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}
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/// fo[o] fo[o(])
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/// fo[o] -> append ( -> fo[o(])
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/// fo[o] fo[o(])
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#[test]
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fn test_append_multi() {
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test_hooks_with_pairs(
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&Rope::from("foo\nfoo\nfoo\n"),
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&Selection::new(
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smallvec!(Range::new(2, 4), Range::new(6, 8), Range::new(10, 12)),
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0,
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),
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differing_pairs(),
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|open, close| {
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format!(
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"foo{open}{close}\nfoo{open}{close}\nfoo{open}{close}\n",
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open = open,
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close = close
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)
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},
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&Selection::new(
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smallvec!(Range::new(2, 5), Range::new(8, 11), Range::new(14, 17)),
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0,
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),
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);
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}
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/// ([]) -> insert ) -> ()[]
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#[test]
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fn test_insert_close_inside_pair() {
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@ -307,7 +366,23 @@ mod test {
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&Selection::single(2, 1),
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*close,
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&doc,
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&Selection::point(2),
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&Selection::single(3, 2),
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);
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}
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}
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/// [(]) -> append ) -> [()]
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#[test]
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fn test_append_close_inside_pair() {
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for (open, close) in PAIRS {
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let doc = Rope::from(format!("{}{}\n", open, close));
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test_hooks(
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&doc,
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&Selection::single(0, 2),
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*close,
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&doc,
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&Selection::single(0, 3),
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);
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}
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}
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@ -323,8 +398,33 @@ mod test {
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);
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let expected_sel = Selection::new(
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// smallvec!(Range::new(3, 2), Range::new(6, 5), Range::new(9, 8),),
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smallvec!(Range::point(2), Range::point(5), Range::point(8),),
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smallvec!(Range::new(3, 2), Range::new(6, 5), Range::new(9, 8),),
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0,
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);
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for (open, close) in PAIRS {
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let doc = Rope::from(format!(
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"{open}{close}\n{open}{close}\n{open}{close}\n",
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open = open,
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close = close
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));
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test_hooks(&doc, &sel, *close, &doc, &expected_sel);
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}
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}
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/// [(]) [()]
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/// [(]) -> append ) -> [()]
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/// [(]) [()]
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#[test]
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fn test_append_close_inside_pair_multi_cursor() {
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let sel = Selection::new(
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smallvec!(Range::new(0, 2), Range::new(3, 5), Range::new(6, 8),),
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0,
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);
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let expected_sel = Selection::new(
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smallvec!(Range::new(0, 3), Range::new(3, 6), Range::new(6, 9),),
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0,
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);
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@ -343,7 +443,7 @@ mod test {
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#[test]
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fn test_insert_open_inside_pair() {
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let sel = Selection::single(2, 1);
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let expected_sel = Selection::point(2);
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let expected_sel = Selection::single(3, 2);
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for (open, close) in differing_pairs() {
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let doc = Rope::from(format!("{}{}", open, close));
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@ -357,11 +457,49 @@ mod test {
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}
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}
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/// [word(]) -> append ( -> [word((]))
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#[test]
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fn test_append_open_inside_pair() {
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let sel = Selection::single(0, 6);
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let expected_sel = Selection::single(0, 7);
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for (open, close) in differing_pairs() {
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let doc = Rope::from(format!("word{}{}", open, close));
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let expected_doc = Rope::from(format!(
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"word{open}{open}{close}{close}",
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open = open,
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close = close
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));
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test_hooks(&doc, &sel, *open, &expected_doc, &expected_sel);
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}
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}
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/// ([]) -> insert " -> ("[]")
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#[test]
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fn test_insert_nested_open_inside_pair() {
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let sel = Selection::single(2, 1);
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let expected_sel = Selection::point(2);
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let expected_sel = Selection::single(3, 2);
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for (outer_open, outer_close) in differing_pairs() {
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let doc = Rope::from(format!("{}{}", outer_open, outer_close,));
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for (inner_open, inner_close) in matching_pairs() {
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let expected_doc = Rope::from(format!(
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"{}{}{}{}",
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outer_open, inner_open, inner_close, outer_close
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));
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test_hooks(&doc, &sel, *inner_open, &expected_doc, &expected_sel);
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}
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}
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}
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/// [(]) -> append " -> [("]")
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#[test]
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fn test_append_nested_open_inside_pair() {
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let sel = Selection::single(0, 2);
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let expected_sel = Selection::single(0, 3);
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for (outer_open, outer_close) in differing_pairs() {
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let doc = Rope::from(format!("{}{}", outer_open, outer_close,));
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@ -385,21 +523,44 @@ mod test {
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&Selection::single(1, 0),
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PAIRS,
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|open, _| format!("{}word", open),
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&Selection::point(1),
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&Selection::single(2, 1),
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)
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}
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// [TODO] broken until it works with selections
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/// [wor]d -> insert ( -> ([wor]d
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#[test]
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#[ignore]
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fn test_insert_open_with_selection() {
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test_hooks_with_pairs(
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&Rope::from("word"),
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&Selection::single(0, 4),
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&Selection::single(3, 0),
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PAIRS,
|
||||
|open, _| format!("{}word", open),
|
||||
&Selection::single(1, 5),
|
||||
&Selection::single(4, 1),
|
||||
)
|
||||
}
|
||||
|
||||
/// [wor]d -> append ) -> [wor)]d
|
||||
#[test]
|
||||
fn test_append_close_inside_non_pair_with_selection() {
|
||||
let sel = Selection::single(0, 4);
|
||||
let expected_sel = Selection::single(0, 5);
|
||||
|
||||
for (_, close) in PAIRS {
|
||||
let doc = Rope::from("word");
|
||||
let expected_doc = Rope::from(format!("wor{}d", close));
|
||||
test_hooks(&doc, &sel, *close, &expected_doc, &expected_sel);
|
||||
}
|
||||
}
|
||||
|
||||
/// foo[ wor]d -> insert ( -> foo([) wor]d
|
||||
#[test]
|
||||
fn test_insert_open_trailing_word_with_selection() {
|
||||
test_hooks_with_pairs(
|
||||
&Rope::from("foo word"),
|
||||
&Selection::single(7, 3),
|
||||
differing_pairs(),
|
||||
|open, close| format!("foo{}{} word", open, close),
|
||||
&Selection::single(9, 4),
|
||||
)
|
||||
}
|
||||
|
||||
|
|
@ -413,7 +574,7 @@ mod test {
|
|||
fn test_insert_open_after_non_pair() {
|
||||
let doc = Rope::from("word");
|
||||
let sel = Selection::single(5, 4);
|
||||
let expected_sel = Selection::point(5);
|
||||
let expected_sel = Selection::single(6, 5);
|
||||
|
||||
test_hooks_with_pairs(
|
||||
&doc,
|
||||
|
|
@ -431,4 +592,18 @@ mod test {
|
|||
&expected_sel,
|
||||
);
|
||||
}
|
||||
|
||||
/// appending with only a cursor should stay a cursor
|
||||
///
|
||||
/// [] -> append to end "foo -> "foo[]"
|
||||
#[test]
|
||||
fn test_append_single_cursor() {
|
||||
test_hooks_with_pairs(
|
||||
&Rope::from("\n"),
|
||||
&Selection::single(0, 1),
|
||||
PAIRS,
|
||||
|open, close| format!("{}{}\n", open, close),
|
||||
&Selection::single(1, 2),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -7,6 +7,7 @@ use crate::{
|
|||
ensure_grapheme_boundary_next, ensure_grapheme_boundary_prev, next_grapheme_boundary,
|
||||
prev_grapheme_boundary,
|
||||
},
|
||||
movement::Direction,
|
||||
Assoc, ChangeSet, RopeSlice,
|
||||
};
|
||||
use smallvec::{smallvec, SmallVec};
|
||||
|
|
@ -82,6 +83,13 @@ impl Range {
|
|||
std::cmp::max(self.anchor, self.head)
|
||||
}
|
||||
|
||||
/// Total length of the range.
|
||||
#[inline]
|
||||
#[must_use]
|
||||
pub fn len(&self) -> usize {
|
||||
self.to() - self.from()
|
||||
}
|
||||
|
||||
/// The (inclusive) range of lines that the range overlaps.
|
||||
#[inline]
|
||||
#[must_use]
|
||||
|
|
@ -102,6 +110,18 @@ impl Range {
|
|||
self.anchor == self.head
|
||||
}
|
||||
|
||||
/// `Direction::Backward` when head < anchor.
|
||||
/// `Direction::Backward` otherwise.
|
||||
#[inline]
|
||||
#[must_use]
|
||||
pub fn direction(&self) -> Direction {
|
||||
if self.head < self.anchor {
|
||||
Direction::Backward
|
||||
} else {
|
||||
Direction::Forward
|
||||
}
|
||||
}
|
||||
|
||||
/// Check two ranges for overlap.
|
||||
#[must_use]
|
||||
pub fn overlaps(&self, other: &Self) -> bool {
|
||||
|
|
|
|||
Loading…
Reference in a new issue