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@ -1,6 +1,8 @@
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use helix_core::hashmap;
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use std::collections::HashMap;
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use serde::{Deserialize, Deserializer};
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use toml::Value;
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#[cfg(feature = "term")]
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pub use tui::style::{Color, Style};
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@ -83,69 +85,88 @@ pub use tui::style::{Color, Style};
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// }
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/// Color theme for syntax highlighting.
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#[derive(Debug)]
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pub struct Theme {
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scopes: Vec<String>,
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mapping: HashMap<&'static str, Style>,
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styles: HashMap<String, Style>,
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}
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impl<'de> Deserialize<'de> for Theme {
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fn deserialize<D>(deserializer: D) -> Result<Theme, D::Error>
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where
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D: Deserializer<'de>,
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{
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let mut styles = HashMap::new();
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if let Ok(colors) = HashMap::<String, Value>::deserialize(deserializer) {
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// scopes.reserve(colors.len());
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styles.reserve(colors.len());
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for (name, style_value) in colors {
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let mut style = Style::default();
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parse_style(&mut style, style_value);
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// scopes.push(name);
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styles.insert(name, style);
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}
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}
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let scopes = styles.keys().map(ToString::to_string).collect();
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Ok(Theme { scopes, styles })
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}
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}
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fn parse_style(style: &mut Style, value: Value) {
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if let Value::Table(entries) = value {
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for (name, value) in entries {
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match name.as_str() {
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"fg" => {
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if let Some(color) = parse_color(value) {
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*style = style.fg(color);
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}
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}
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"bg" => {
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if let Some(color) = parse_color(value) {
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*style = style.bg(color);
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}
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}
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_ => (),
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}
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}
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} else if let Some(color) = parse_color(value) {
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*style = style.fg(color);
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}
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}
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fn hex_string_to_rgb(s: &str) -> Option<(u8, u8, u8)> {
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if s.starts_with("#") && s.len() >= 7 {
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if let (Ok(red), Ok(green), Ok(blue)) = (
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u8::from_str_radix(&s[1..3], 16),
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u8::from_str_radix(&s[3..5], 16),
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u8::from_str_radix(&s[5..7], 16),
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) {
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Some((red, green, blue))
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} else {
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None
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}
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} else {
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None
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}
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}
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impl Default for Theme {
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fn default() -> Self {
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let mapping = hashmap! {
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"attribute" => Style::default().fg(Color::Rgb(219, 191, 239)), // lilac
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"keyword" => Style::default().fg(Color::Rgb(236, 205, 186)), // almond
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"punctuation" => Style::default().fg(Color::Rgb(164, 160, 232)), // lavender
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"punctuation.delimiter" => Style::default().fg(Color::Rgb(164, 160, 232)), // lavender
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"operator" => Style::default().fg(Color::Rgb(219, 191, 239)), // lilac
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"property" => Style::default().fg(Color::Rgb(164, 160, 232)), // lavender
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"variable.parameter" => Style::default().fg(Color::Rgb(164, 160, 232)), // lavender
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// TODO distinguish type from type.builtin?
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"type" => Style::default().fg(Color::Rgb(255, 255, 255)), // white
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"type.builtin" => Style::default().fg(Color::Rgb(255, 255, 255)), // white
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"constructor" => Style::default().fg(Color::Rgb(219, 191, 239)), // lilac
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"function" => Style::default().fg(Color::Rgb(255, 255, 255)), // white
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"function.macro" => Style::default().fg(Color::Rgb(219, 191, 239)), // lilac
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"comment" => Style::default().fg(Color::Rgb(105, 124, 129)), // sirocco
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"variable.builtin" => Style::default().fg(Color::Rgb(159, 242, 143)), // mint
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"constant" => Style::default().fg(Color::Rgb(255, 255, 255)), // white
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"constant.builtin" => Style::default().fg(Color::Rgb(255, 255, 255)), // white
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"string" => Style::default().fg(Color::Rgb(204, 204, 204)), // silver
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"escape" => Style::default().fg(Color::Rgb(239, 186, 93)), // honey
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// used for lifetimes
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"label" => Style::default().fg(Color::Rgb(239, 186, 93)), // honey
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// TODO: diferentiate number builtin
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// TODO: diferentiate doc comment
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// TODO: variable as lilac
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// TODO: mod/use statements as white
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// TODO: mod stuff as chamoise
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// TODO: add "(scoped_identifier) @path" for std::mem::
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//
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// concat (ERROR) @syntax-error and "MISSING ;" selectors for errors
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"module" => Style::default().fg(Color::Rgb(255, 0, 0)), // white
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"variable" => Style::default().fg(Color::Rgb(255, 0, 0)), // white
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"function.builtin" => Style::default().fg(Color::Rgb(255, 0, 0)), // white
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"ui.background" => Style::default().bg(Color::Rgb(59, 34, 76)), // midnight
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"ui.linenr" => Style::default().fg(Color::Rgb(90, 89, 119)), // comet
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"ui.statusline" => Style::default().bg(Color::Rgb(40, 23, 51)), // revolver
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"ui.popup" => Style::default().bg(Color::Rgb(40, 23, 51)), // revolver
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"warning" => Style::default().fg(Color::Rgb(255, 205, 28)),
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"error" => Style::default().fg(Color::Rgb(244, 120, 104)),
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"info" => Style::default().fg(Color::Rgb(111, 68, 240)),
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"hint" => Style::default().fg(Color::Rgb(204, 204, 204)),
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};
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let scopes = mapping.keys().map(ToString::to_string).collect();
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Self { scopes, mapping }
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fn parse_color(value: Value) -> Option<Color> {
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if let Value::String(s) = value {
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if let Some((red, green, blue)) = hex_string_to_rgb(&s) {
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Some(Color::Rgb(red, green, blue))
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} else {
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None
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}
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} else {
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None
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}
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}
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impl Theme {
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pub fn get(&self, scope: &str) -> Style {
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self.mapping
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self.styles
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.get(scope)
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.copied()
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.unwrap_or_else(|| Style::default().fg(Color::Rgb(0, 0, 255)))
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