47 lines
1.1 KiB
Rust
47 lines
1.1 KiB
Rust
use std::ops::Range;
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/// A selection in the text, represented by start and end byte indices.
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#[derive(Debug, Copy, Clone, PartialEq, Eq, Default)]
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pub struct Selection {
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pub start: usize,
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pub end: usize,
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}
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impl Selection {
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pub fn new(start: usize, end: usize) -> Self {
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Self { start, end }
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}
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pub fn len(&self) -> usize {
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self.end.saturating_sub(self.start)
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}
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pub fn is_empty(&self) -> bool {
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self.start == self.end
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}
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/// Clears the selection, setting start and end to 0.
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pub fn clear(&mut self) {
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self.start = 0;
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self.end = 0;
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}
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/// Checks if the given offset is within the selection range.
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pub fn contains(&self, offset: usize) -> bool {
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offset >= self.start && offset < self.end
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}
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}
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impl From<Range<usize>> for Selection {
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fn from(value: Range<usize>) -> Self {
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Self::new(value.start, value.end)
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}
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}
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impl From<Selection> for Range<usize> {
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fn from(value: Selection) -> Self {
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value.start..value.end
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}
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}
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pub type Position = lsp_types::Position;
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