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Implement SuggestionSnapshot::to_offset

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This commit is contained in:
Antonio Scandurra 2023-03-21 11:15:59 +01:00
parent c0e124a55a
commit f829ce5641
1 changed files with 37 additions and 2 deletions
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39
crates/editor/src/display_map/suggestion_map.rs
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@ -229,6 +229,27 @@ impl SuggestionSnapshot {
}
}
pub fn to_offset(&self, point: SuggestionPoint) -> SuggestionOffset {
if let Some(suggestion) = self.suggestion.as_ref() {
let suggestion_start = suggestion.position.to_point(&self.fold_snapshot).0;
let suggestion_end = suggestion_start + suggestion.text.max_point();
if point.0 <= suggestion_start {
SuggestionOffset(FoldPoint(point.0).to_offset(&self.fold_snapshot).0)
} else if point.0 > suggestion_end {
let fold_offset = FoldPoint(suggestion_start + (point.0 - suggestion_end))
.to_offset(&self.fold_snapshot);
SuggestionOffset(fold_offset.0 + suggestion.text.len())
} else {
let offset_in_suggestion =
suggestion.text.point_to_offset(point.0 - suggestion_start);
SuggestionOffset(suggestion.position.0 + offset_in_suggestion)
}
} else {
SuggestionOffset(FoldPoint(point.0).to_offset(&self.fold_snapshot).0)
}
}
pub fn line_len(&self, row: u32) -> u32 {
if let Some(suggestion) = self.suggestion.as_ref() {
let suggestion_lines = suggestion.text.max_point();
@ -257,9 +278,8 @@ impl SuggestionSnapshot {
pub fn text_summary_for_range(&self, range: Range<SuggestionPoint>) -> TextSummary {
if let Some(suggestion) = self.suggestion.as_ref() {
let suggestion_lines = suggestion.text.max_point();
let suggestion_start = suggestion.position.to_point(&self.fold_snapshot).0;
let suggestion_end = suggestion_start + suggestion_lines;
let suggestion_end = suggestion_start + suggestion.text.max_point();
let mut summary = TextSummary::default();
let prefix_range =
@ -299,6 +319,12 @@ impl SuggestionSnapshot {
}
}
pub fn chars_at(&self, start: SuggestionPoint) -> impl '_ + Iterator<Item = char> {
let start = self.to_offset(start);
self.chunks(start..self.len(), false, None)
.flat_map(|chunk| chunk.text.chars())
}
pub fn chunks<'a>(
&'a self,
range: Range<SuggestionOffset>,
@ -673,9 +699,18 @@ mod tests {
}
let mut suggestion_point = SuggestionPoint::default();
let mut suggestion_offset = SuggestionOffset::default();
for ch in expected_text.chars() {
assert_eq!(
suggestion_snapshot.to_offset(suggestion_point),
suggestion_offset,
"invalid to_offset({:?})",
suggestion_point
);
let mut bytes = [0; 4];
for byte in ch.encode_utf8(&mut bytes).as_bytes() {
suggestion_offset.0 += 1;
if *byte == b'\n' {
suggestion_point.0 += Point::new(1, 0);
} else {