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-rw-r--r--helix-core/src/auto_pairs.rs594
-rw-r--r--helix-core/src/test.rs127
2 files changed, 144 insertions, 577 deletions
diff --git a/helix-core/src/auto_pairs.rs b/helix-core/src/auto_pairs.rs
index edc404ac..072c93d0 100644
--- a/helix-core/src/auto_pairs.rs
+++ b/helix-core/src/auto_pairs.rs
@@ -146,13 +146,7 @@ fn prev_char(doc: &Rope, pos: usize) -> Option<char> {
}
/// calculate what the resulting range should be for an auto pair insertion
-fn get_next_range(
- doc: &Rope,
- start_range: &Range,
- offset: usize,
- typed_char: char,
- len_inserted: usize,
-) -> Range {
+fn get_next_range(doc: &Rope, start_range: &Range, offset: usize, len_inserted: usize) -> Range {
// When the character under the cursor changes due to complete pair
// insertion, we must look backward a grapheme and then add the length
// of the insertion to put the resulting cursor in the right place, e.g.
@@ -172,8 +166,8 @@ fn get_next_range(
// inserting at the very end of the document after the last newline
if start_range.head == doc.len_chars() && start_range.anchor == doc.len_chars() {
return Range::new(
- start_range.anchor + offset + typed_char.len_utf8(),
- start_range.head + offset + typed_char.len_utf8(),
+ start_range.anchor + offset + 1,
+ start_range.head + offset + 1,
);
}
@@ -203,21 +197,18 @@ fn get_next_range(
// trivial case: only inserted a single-char opener, just move the selection
if len_inserted == 1 {
let end_anchor = if single_grapheme || start_range.direction() == Direction::Backward {
- start_range.anchor + offset + typed_char.len_utf8()
+ start_range.anchor + offset + 1
} else {
start_range.anchor + offset
};
- return Range::new(
- end_anchor,
- start_range.head + offset + typed_char.len_utf8(),
- );
+ return Range::new(end_anchor, start_range.head + offset + 1);
}
// If the head = 0, then we must be in insert mode with a backward
// cursor, which implies the head will just move
let end_head = if start_range.head == 0 || start_range.direction() == Direction::Backward {
- start_range.head + offset + typed_char.len_utf8()
+ start_range.head + offset + 1
} else {
// We must have a forward cursor, which means we must move to the
// other end of the grapheme to get to where the new characters
@@ -243,8 +234,7 @@ fn get_next_range(
(_, Direction::Forward) => {
if single_grapheme {
- graphemes::prev_grapheme_boundary(doc.slice(..), start_range.head)
- + typed_char.len_utf8()
+ graphemes::prev_grapheme_boundary(doc.slice(..), start_range.head) + 1
// if we are appending, the anchor stays where it is; only offset
// for multiple range insertions
@@ -258,7 +248,9 @@ fn get_next_range(
// if we're backward, then the head is at the first char
// of the typed char, so we need to add the length of
// the closing char
- graphemes::prev_grapheme_boundary(doc.slice(..), start_range.anchor) + len_inserted
+ graphemes::prev_grapheme_boundary(doc.slice(..), start_range.anchor)
+ + len_inserted
+ + offset
} else {
// when we are inserting in front of a selection, we need to move
// the anchor over by however many characters were inserted overall
@@ -279,9 +271,12 @@ fn handle_open(doc: &Rope, selection: &Selection, pair: &Pair) -> Transaction {
let next_char = doc.get_char(cursor);
let len_inserted;
+ // Since auto pairs are currently limited to single chars, we're either
+ // inserting exactly one or two chars. When arbitrary length pairs are
+ // added, these will need to be changed.
let change = match next_char {
Some(_) if !pair.should_close(doc, start_range) => {
- len_inserted = pair.open.len_utf8();
+ len_inserted = 1;
let mut tendril = Tendril::new();
tendril.push(pair.open);
(cursor, cursor, Some(tendril))
@@ -289,12 +284,12 @@ fn handle_open(doc: &Rope, selection: &Selection, pair: &Pair) -> Transaction {
_ => {
// insert open & close
let pair_str = Tendril::from_iter([pair.open, pair.close]);
- len_inserted = pair.open.len_utf8() + pair.close.len_utf8();
+ len_inserted = 2;
(cursor, cursor, Some(pair_str))
}
};
- let next_range = get_next_range(doc, start_range, offs, pair.open, len_inserted);
+ let next_range = get_next_range(doc, start_range, offs, len_inserted);
end_ranges.push(next_range);
offs += len_inserted;
@@ -308,7 +303,6 @@ fn handle_open(doc: &Rope, selection: &Selection, pair: &Pair) -> Transaction {
fn handle_close(doc: &Rope, selection: &Selection, pair: &Pair) -> Transaction {
let mut end_ranges = SmallVec::with_capacity(selection.len());
-
let mut offs = 0;
let transaction = Transaction::change_by_selection(doc, selection, |start_range| {
@@ -320,13 +314,13 @@ fn handle_close(doc: &Rope, selection: &Selection, pair: &Pair) -> Transaction {
// return transaction that moves past close
(cursor, cursor, None) // no-op
} else {
- len_inserted += pair.close.len_utf8();
+ len_inserted = 1;
let mut tendril = Tendril::new();
tendril.push(pair.close);
(cursor, cursor, Some(tendril))
};
- let next_range = get_next_range(doc, start_range, offs, pair.close, len_inserted);
+ let next_range = get_next_range(doc, start_range, offs, len_inserted);
end_ranges.push(next_range);
offs += len_inserted;
@@ -362,11 +356,11 @@ fn handle_same(doc: &Rope, selection: &Selection, pair: &Pair) -> Transaction {
pair_str.push(pair.close);
}
- len_inserted += pair_str.len();
+ len_inserted += pair_str.chars().count();
(cursor, cursor, Some(pair_str))
};
- let next_range = get_next_range(doc, start_range, offs, pair.open, len_inserted);
+ let next_range = get_next_range(doc, start_range, offs, len_inserted);
end_ranges.push(next_range);
offs += len_inserted;
@@ -377,551 +371,3 @@ fn handle_same(doc: &Rope, selection: &Selection, pair: &Pair) -> Transaction {
log::debug!("auto pair transaction: {:#?}", t);
t
}
-
-#[cfg(test)]
-mod test {
- use super::*;
- use smallvec::smallvec;
-
- const LINE_END: &str = crate::DEFAULT_LINE_ENDING.as_str();
-
- fn differing_pairs() -> impl Iterator<Item = &'static (char, char)> {
- DEFAULT_PAIRS.iter().filter(|(open, close)| open != close)
- }
-
- fn matching_pairs() -> impl Iterator<Item = &'static (char, char)> {
- DEFAULT_PAIRS.iter().filter(|(open, close)| open == close)
- }
-
- fn test_hooks(
- in_doc: &Rope,
- in_sel: &Selection,
- ch: char,
- pairs: &[(char, char)],
- expected_doc: &Rope,
- expected_sel: &Selection,
- ) {
- let pairs = AutoPairs::new(pairs.iter());
- let trans = hook(in_doc, in_sel, ch, &pairs).unwrap();
- let mut actual_doc = in_doc.clone();
- assert!(trans.apply(&mut actual_doc));
- assert_eq!(expected_doc, &actual_doc);
- assert_eq!(expected_sel, trans.selection().unwrap());
- }
-
- fn test_hooks_with_pairs<I, F, R>(
- in_doc: &Rope,
- in_sel: &Selection,
- test_pairs: I,
- pairs: &[(char, char)],
- get_expected_doc: F,
- actual_sel: &Selection,
- ) where
- I: IntoIterator<Item = &'static (char, char)>,
- F: Fn(char, char) -> R,
- R: Into<Rope>,
- Rope: From<R>,
- {
- test_pairs.into_iter().for_each(|(open, close)| {
- test_hooks(
- in_doc,
- in_sel,
- *open,
- pairs,
- &Rope::from(get_expected_doc(*open, *close)),
- actual_sel,
- )
- });
- }
-
- // [] indicates range
-
- /// [] -> insert ( -> ([])
- #[test]
- fn test_insert_blank() {
- test_hooks_with_pairs(
- &Rope::from(LINE_END),
- &Selection::single(1, 0),
- DEFAULT_PAIRS,
- DEFAULT_PAIRS,
- |open, close| format!("{}{}{}", open, close, LINE_END),
- &Selection::single(2, 1),
- );
-
- let empty_doc = Rope::from(format!("{line_end}{line_end}", line_end = LINE_END));
-
- test_hooks_with_pairs(
- &empty_doc,
- &Selection::single(empty_doc.len_chars(), LINE_END.len()),
- DEFAULT_PAIRS,
- DEFAULT_PAIRS,
- |open, close| {
- format!(
- "{line_end}{open}{close}{line_end}",
- open = open,
- close = close,
- line_end = LINE_END
- )
- },
- &Selection::single(LINE_END.len() + 2, LINE_END.len() + 1),
- );
- }
-
- #[test]
- fn test_insert_before_multi_code_point_graphemes() {
- for (_, close) in differing_pairs() {
- test_hooks(
- &Rope::from(format!("hello πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦ goodbye{}", LINE_END)),
- &Selection::single(13, 6),
- *close,
- DEFAULT_PAIRS,
- &Rope::from(format!("hello {}πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦ goodbye{}", close, LINE_END)),
- &Selection::single(14, 7),
- );
- }
- }
-
- #[test]
- fn test_insert_at_end_of_document() {
- test_hooks_with_pairs(
- &Rope::from(LINE_END),
- &Selection::single(LINE_END.len(), LINE_END.len()),
- DEFAULT_PAIRS,
- DEFAULT_PAIRS,
- |open, close| format!("{}{}{}", LINE_END, open, close),
- &Selection::single(LINE_END.len() + 1, LINE_END.len() + 1),
- );
-
- test_hooks_with_pairs(
- &Rope::from(format!("foo{}", LINE_END)),
- &Selection::single(3 + LINE_END.len(), 3 + LINE_END.len()),
- DEFAULT_PAIRS,
- DEFAULT_PAIRS,
- |open, close| format!("foo{}{}{}", LINE_END, open, close),
- &Selection::single(LINE_END.len() + 4, LINE_END.len() + 4),
- );
- }
-
- /// [] -> append ( -> ([])
- #[test]
- fn test_append_blank() {
- test_hooks_with_pairs(
- // this is what happens when you have a totally blank document and then append
- &Rope::from(format!("{line_end}{line_end}", line_end = LINE_END)),
- // before inserting the pair, the cursor covers all of both empty lines
- &Selection::single(0, LINE_END.len() * 2),
- DEFAULT_PAIRS,
- DEFAULT_PAIRS,
- |open, close| {
- format!(
- "{line_end}{open}{close}{line_end}",
- line_end = LINE_END,
- open = open,
- close = close
- )
- },
- // after inserting pair, the cursor covers the first new line and the open char
- &Selection::single(0, LINE_END.len() + 2),
- );
- }
-
- /// [] ([])
- /// [] -> insert -> ([])
- /// [] ([])
- #[test]
- fn test_insert_blank_multi_cursor() {
- test_hooks_with_pairs(
- &Rope::from("\n\n\n"),
- &Selection::new(
- smallvec!(Range::new(1, 0), Range::new(2, 1), Range::new(3, 2),),
- 0,
- ),
- DEFAULT_PAIRS,
- DEFAULT_PAIRS,
- |open, close| {
- format!(
- "{open}{close}\n{open}{close}\n{open}{close}\n",
- open = open,
- close = close
- )
- },
- &Selection::new(
- smallvec!(Range::new(2, 1), Range::new(5, 4), Range::new(8, 7),),
- 0,
- ),
- );
- }
-
- /// fo[o] -> append ( -> fo[o(])
- #[test]
- fn test_append() {
- test_hooks_with_pairs(
- &Rope::from("foo\n"),
- &Selection::single(2, 4),
- differing_pairs(),
- DEFAULT_PAIRS,
- |open, close| format!("foo{}{}\n", open, close),
- &Selection::single(2, 5),
- );
- }
-
- /// foo[] -> append to end of line ( -> foo([])
- #[test]
- fn test_append_single_cursor() {
- test_hooks_with_pairs(
- &Rope::from(format!("foo{}", LINE_END)),
- &Selection::single(3, 3 + LINE_END.len()),
- differing_pairs(),
- DEFAULT_PAIRS,
- |open, close| format!("foo{}{}{}", open, close, LINE_END),
- &Selection::single(4, 5),
- );
- }
-
- /// fo[o] fo[o(])
- /// fo[o] -> append ( -> fo[o(])
- /// fo[o] fo[o(])
- #[test]
- fn test_append_multi() {
- test_hooks_with_pairs(
- &Rope::from("foo\nfoo\nfoo\n"),
- &Selection::new(
- smallvec!(Range::new(2, 4), Range::new(6, 8), Range::new(10, 12)),
- 0,
- ),
- differing_pairs(),
- DEFAULT_PAIRS,
- |open, close| {
- format!(
- "foo{open}{close}\nfoo{open}{close}\nfoo{open}{close}\n",
- open = open,
- close = close
- )
- },
- &Selection::new(
- smallvec!(Range::new(2, 5), Range::new(8, 11), Range::new(14, 17)),
- 0,
- ),
- );
- }
-
- /// ([)] -> insert ) -> ()[]
- #[test]
- fn test_insert_close_inside_pair() {
- for (open, close) in DEFAULT_PAIRS {
- let doc = Rope::from(format!("{}{}{}", open, close, LINE_END));
-
- test_hooks(
- &doc,
- &Selection::single(2, 1),
- *close,
- DEFAULT_PAIRS,
- &doc,
- &Selection::single(2 + LINE_END.len(), 2),
- );
- }
- }
-
- /// [(]) -> append ) -> [()]
- #[test]
- fn test_append_close_inside_pair() {
- for (open, close) in DEFAULT_PAIRS {
- let doc = Rope::from(format!("{}{}{}", open, close, LINE_END));
-
- test_hooks(
- &doc,
- &Selection::single(0, 2),
- *close,
- DEFAULT_PAIRS,
- &doc,
- &Selection::single(0, 2 + LINE_END.len()),
- );
- }
- }
-
- /// ([]) ()[]
- /// ([]) -> insert ) -> ()[]
- /// ([]) ()[]
- #[test]
- fn test_insert_close_inside_pair_multi_cursor() {
- let sel = Selection::new(
- smallvec!(Range::new(2, 1), Range::new(5, 4), Range::new(8, 7),),
- 0,
- );
-
- let expected_sel = Selection::new(
- smallvec!(Range::new(3, 2), Range::new(6, 5), Range::new(9, 8),),
- 0,
- );
-
- for (open, close) in DEFAULT_PAIRS {
- let doc = Rope::from(format!(
- "{open}{close}\n{open}{close}\n{open}{close}\n",
- open = open,
- close = close
- ));
-
- test_hooks(&doc, &sel, *close, DEFAULT_PAIRS, &doc, &expected_sel);
- }
- }
-
- /// [(]) [()]
- /// [(]) -> append ) -> [()]
- /// [(]) [()]
- #[test]
- fn test_append_close_inside_pair_multi_cursor() {
- let sel = Selection::new(
- smallvec!(Range::new(0, 2), Range::new(3, 5), Range::new(6, 8),),
- 0,
- );
-
- let expected_sel = Selection::new(
- smallvec!(Range::new(0, 3), Range::new(3, 6), Range::new(6, 9),),
- 0,
- );
-
- for (open, close) in DEFAULT_PAIRS {
- let doc = Rope::from(format!(
- "{open}{close}\n{open}{close}\n{open}{close}\n",
- open = open,
- close = close
- ));
-
- test_hooks(&doc, &sel, *close, DEFAULT_PAIRS, &doc, &expected_sel);
- }
- }
-
- /// ([]) -> insert ( -> (([]))
- #[test]
- fn test_insert_open_inside_pair() {
- let sel = Selection::single(2, 1);
- let expected_sel = Selection::single(3, 2);
-
- for (open, close) in differing_pairs() {
- let doc = Rope::from(format!("{}{}", open, close));
- let expected_doc = Rope::from(format!(
- "{open}{open}{close}{close}",
- open = open,
- close = close
- ));
-
- test_hooks(
- &doc,
- &sel,
- *open,
- DEFAULT_PAIRS,
- &expected_doc,
- &expected_sel,
- );
- }
- }
-
- /// [word(]) -> append ( -> [word((]))
- #[test]
- fn test_append_open_inside_pair() {
- let sel = Selection::single(0, 6);
- let expected_sel = Selection::single(0, 7);
-
- for (open, close) in differing_pairs() {
- let doc = Rope::from(format!("word{}{}", open, close));
- let expected_doc = Rope::from(format!(
- "word{open}{open}{close}{close}",
- open = open,
- close = close
- ));
-
- test_hooks(
- &doc,
- &sel,
- *open,
- DEFAULT_PAIRS,
- &expected_doc,
- &expected_sel,
- );
- }
- }
-
- /// ([]) -> insert " -> ("[]")
- #[test]
- fn test_insert_nested_open_inside_pair() {
- let sel = Selection::single(2, 1);
- let expected_sel = Selection::single(3, 2);
-
- for (outer_open, outer_close) in differing_pairs() {
- let doc = Rope::from(format!("{}{}", outer_open, outer_close,));
-
- for (inner_open, inner_close) in matching_pairs() {
- let expected_doc = Rope::from(format!(
- "{}{}{}{}",
- outer_open, inner_open, inner_close, outer_close
- ));
-
- test_hooks(
- &doc,
- &sel,
- *inner_open,
- DEFAULT_PAIRS,
- &expected_doc,
- &expected_sel,
- );
- }
- }
- }
-
- /// [(]) -> append " -> [("]")
- #[test]
- fn test_append_nested_open_inside_pair() {
- let sel = Selection::single(0, 2);
- let expected_sel = Selection::single(0, 3);
-
- for (outer_open, outer_close) in differing_pairs() {
- let doc = Rope::from(format!("{}{}", outer_open, outer_close,));
-
- for (inner_open, inner_close) in matching_pairs() {
- let expected_doc = Rope::from(format!(
- "{}{}{}{}",
- outer_open, inner_open, inner_close, outer_close
- ));
-
- test_hooks(
- &doc,
- &sel,
- *inner_open,
- DEFAULT_PAIRS,
- &expected_doc,
- &expected_sel,
- );
- }
- }
- }
-
- /// []word -> insert ( -> ([]word
- #[test]
- fn test_insert_open_before_non_pair() {
- test_hooks_with_pairs(
- &Rope::from("word"),
- &Selection::single(1, 0),
- DEFAULT_PAIRS,
- DEFAULT_PAIRS,
- |open, _| format!("{}word", open),
- &Selection::single(2, 1),
- )
- }
-
- /// [wor]d -> insert ( -> ([wor]d
- #[test]
- fn test_insert_open_with_selection() {
- test_hooks_with_pairs(
- &Rope::from("word"),
- &Selection::single(3, 0),
- DEFAULT_PAIRS,
- DEFAULT_PAIRS,
- |open, _| format!("{}word", open),
- &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 DEFAULT_PAIRS {
- let doc = Rope::from("word");
- let expected_doc = Rope::from(format!("wor{}d", close));
- test_hooks(
- &doc,
- &sel,
- *close,
- DEFAULT_PAIRS,
- &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(),
- DEFAULT_PAIRS,
- |open, close| format!("foo{}{} word", open, close),
- &Selection::single(9, 4),
- )
- }
-
- /// foo([) wor]d -> insert ) -> foo()[ wor]d
- #[test]
- fn test_insert_close_inside_pair_trailing_word_with_selection() {
- for (open, close) in differing_pairs() {
- test_hooks(
- &Rope::from(format!("foo{}{} word{}", open, close, LINE_END)),
- &Selection::single(9, 4),
- *close,
- DEFAULT_PAIRS,
- &Rope::from(format!("foo{}{} word{}", open, close, LINE_END)),
- &Selection::single(9, 5),
- )
- }
- }
-
- /// we want pairs that are *not* the same char to be inserted after
- /// a non-pair char, for cases like functions, but for pairs that are
- /// the same char, we want to *not* insert a pair to handle cases like "I'm"
- ///
- /// word[] -> insert ( -> word([])
- /// word[] -> insert ' -> word'[]
- #[test]
- fn test_insert_open_after_non_pair() {
- let doc = Rope::from(format!("word{}", LINE_END));
- let sel = Selection::single(5, 4);
- let expected_sel = Selection::single(6, 5);
-
- test_hooks_with_pairs(
- &doc,
- &sel,
- differing_pairs(),
- DEFAULT_PAIRS,
- |open, close| format!("word{}{}{}", open, close, LINE_END),
- &expected_sel,
- );
-
- test_hooks_with_pairs(
- &doc,
- &sel,
- matching_pairs(),
- DEFAULT_PAIRS,
- |open, _| format!("word{}{}", open, LINE_END),
- &expected_sel,
- );
- }
-
- #[test]
- fn test_configured_pairs() {
- let test_pairs = &[('`', ':'), ('+', '-')];
-
- test_hooks_with_pairs(
- &Rope::from(LINE_END),
- &Selection::single(1, 0),
- test_pairs,
- test_pairs,
- |open, close| format!("{}{}{}", open, close, LINE_END),
- &Selection::single(2, 1),
- );
-
- let doc = Rope::from(format!("foo`: word{}", LINE_END));
-
- test_hooks(
- &doc,
- &Selection::single(9, 4),
- ':',
- test_pairs,
- &doc,
- &Selection::single(9, 5),
- )
- }
-}
diff --git a/helix-core/src/test.rs b/helix-core/src/test.rs
index 45503107..3e54d2c2 100644
--- a/helix-core/src/test.rs
+++ b/helix-core/src/test.rs
@@ -34,7 +34,7 @@ pub fn print(s: &str) -> (String, Selection) {
let mut left = String::with_capacity(s.len());
'outer: while let Some(c) = iter.next() {
- let start = left.len();
+ let start = left.chars().count();
if c != '#' {
left.push(c);
@@ -63,6 +63,7 @@ pub fn print(s: &str) -> (String, Selection) {
left.push(c);
continue;
}
+
if !head_at_beg {
let prev = left.pop().unwrap();
if prev != '|' {
@@ -71,15 +72,18 @@ pub fn print(s: &str) -> (String, Selection) {
continue;
}
}
+
iter.next(); // skip "#"
if is_primary {
primary_idx = Some(ranges.len());
}
+
let (anchor, head) = match head_at_beg {
- true => (left.len(), start),
- false => (start, left.len()),
+ true => (left.chars().count(), start),
+ false => (start, left.chars().count()),
};
+
ranges.push(Range::new(anchor, head));
continue 'outer;
}
@@ -95,6 +99,7 @@ pub fn print(s: &str) -> (String, Selection) {
Some(i) => i,
None => panic!("missing primary `#[|]#` {:?}", s),
};
+
let selection = Selection::new(ranges, primary);
(left, selection)
}
@@ -141,3 +146,119 @@ pub fn plain(s: &str, selection: Selection) -> String {
}
out
}
+
+#[cfg(test)]
+mod test {
+ use super::*;
+
+ #[test]
+ fn print_single() {
+ assert_eq!(
+ (String::from("hello"), Selection::single(1, 0)),
+ print("#[|h]#ello")
+ );
+ assert_eq!(
+ (String::from("hello"), Selection::single(0, 1)),
+ print("#[h|]#ello")
+ );
+ assert_eq!(
+ (String::from("hello"), Selection::single(4, 0)),
+ print("#[|hell]#o")
+ );
+ assert_eq!(
+ (String::from("hello"), Selection::single(0, 4)),
+ print("#[hell|]#o")
+ );
+ assert_eq!(
+ (String::from("hello"), Selection::single(5, 0)),
+ print("#[|hello]#")
+ );
+ assert_eq!(
+ (String::from("hello"), Selection::single(0, 5)),
+ print("#[hello|]#")
+ );
+ }
+
+ #[test]
+ fn print_multi() {
+ assert_eq!(
+ (
+ String::from("hello"),
+ Selection::new(
+ SmallVec::from_slice(&[Range::new(1, 0), Range::new(5, 4)]),
+ 0
+ )
+ ),
+ print("#[|h]#ell#(|o)#")
+ );
+ assert_eq!(
+ (
+ String::from("hello"),
+ Selection::new(
+ SmallVec::from_slice(&[Range::new(0, 1), Range::new(4, 5)]),
+ 0
+ )
+ ),
+ print("#[h|]#ell#(o|)#")
+ );
+ assert_eq!(
+ (
+ String::from("hello"),
+ Selection::new(
+ SmallVec::from_slice(&[Range::new(2, 0), Range::new(5, 3)]),
+ 0
+ )
+ ),
+ print("#[|he]#l#(|lo)#")
+ );
+ assert_eq!(
+ (
+ String::from("hello\r\nhello\r\nhello\r\n"),
+ Selection::new(
+ SmallVec::from_slice(&[
+ Range::new(7, 5),
+ Range::new(21, 19),
+ Range::new(14, 12)
+ ]),
+ 0
+ )
+ ),
+ print("hello#[|\r\n]#hello#(|\r\n)#hello#(|\r\n)#")
+ );
+ }
+
+ #[test]
+ fn print_multi_byte_code_point() {
+ assert_eq!(
+ (String::from("β€žβ€œ"), Selection::single(1, 0)),
+ print("#[|β€ž]#β€œ")
+ );
+ assert_eq!(
+ (String::from("β€žβ€œ"), Selection::single(2, 1)),
+ print("β€ž#[|β€œ]#")
+ );
+ assert_eq!(
+ (String::from("β€žβ€œ"), Selection::single(0, 1)),
+ print("#[β€ž|]#β€œ")
+ );
+ assert_eq!(
+ (String::from("β€žβ€œ"), Selection::single(1, 2)),
+ print("β€ž#[β€œ|]#")
+ );
+ assert_eq!(
+ (String::from("they said β€žhelloβ€œ"), Selection::single(11, 10)),
+ print("they said #[|β€ž]#helloβ€œ")
+ );
+ }
+
+ #[test]
+ fn print_multi_code_point_grapheme() {
+ assert_eq!(
+ (
+ String::from("hello πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦ goodbye"),
+ Selection::single(13, 6)
+ ),
+ print("hello #[|πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦]# goodbye")
+ );
+ }
+}