57 lines
1.1 KiB
Rust
57 lines
1.1 KiB
Rust
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use crate::Color;
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use std::hash::Hash;
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use std::ops::Range;
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pub trait Highlighter: Clone + 'static {
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type Settings: Hash;
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type Highlight;
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type Iterator<'a>: Iterator<Item = (Range<usize>, Self::Highlight)>
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where
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Self: 'a;
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fn new(settings: &Self::Settings) -> Self;
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fn change_line(&mut self, line: usize);
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fn highlight_line(&mut self, line: &str) -> Self::Iterator<'_>;
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fn current_line(&self) -> usize;
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}
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#[derive(Debug, Clone, Copy)]
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pub struct Style {
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pub color: Color,
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}
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#[derive(Debug, Clone, Copy)]
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pub struct PlainText;
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impl Highlighter for PlainText {
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type Settings = ();
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type Highlight = ();
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type Iterator<'a> = std::iter::Empty<(Range<usize>, Self::Highlight)>;
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fn new(_settings: &Self::Settings) -> Self {
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Self
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}
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fn change_line(&mut self, _line: usize) {}
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fn highlight_line(&mut self, _line: &str) -> Self::Iterator<'_> {
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std::iter::empty()
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}
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fn current_line(&self) -> usize {
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usize::MAX
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}
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}
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#[derive(Debug, Clone, Copy)]
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pub struct Format<Font> {
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pub color: Option<Color>,
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pub font: Option<Font>,
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}
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