Syntect Adapter

The syntect feature bridges Opaline themes into the syntect syntax highlighting ecosystem, used by bat, delta, and many other tools.

[dependencies]
opaline = { version = "0.4", features = ["syntect"] }

Color Conversion

OpalineColor converts to syntect::highlighting::Color:

use opaline::OpalineColor;
use syntect::highlighting::Color;

let color = OpalineColor::new(225, 53, 255);
let st_color: Color = color.into();
// → Color { r: 225, g: 53, b: 255, a: 255 }

Style Conversion

OpalineStyle converts to syntect::highlighting::StyleModifier:

use opaline::OpalineStyle;
use syntect::highlighting::StyleModifier;

let style = OpalineStyle::fg(OpalineColor::new(203, 166, 247)).bold().italic();
let modifier: StyleModifier = style.into();
// foreground set, BOLD | ITALIC font_style

Modifier mapping:

OpalineStyle	FontStyle
bold	BOLD
italic	ITALIC
underline	UNDERLINE

Theme Generation

Convert a full Opaline theme to a syntect Theme:

use opaline::adapters::syntect::to_syntect_theme;

let theme = opaline::Theme::default();
let syntect_theme = to_syntect_theme(&theme);

// Use with syntect's highlighter
use syntect::highlighting::ThemeSet;
use syntect::parsing::SyntaxSet;
use syntect::easy::HighlightLines;

let ps = SyntaxSet::load_defaults_newlines();
let syntax = ps.find_syntax_by_extension("rs").unwrap();
let mut h = HighlightLines::new(syntax, &syntect_theme);

Token → Scope Mapping

The adapter maps Opaline's generic core tokens to standard TextMate scopes:

Opaline Token	TextMate Scope
code.keyword	keyword
code.string	string
code.comment	comment
code.function	entity.name.function, support.function
code.number	constant.numeric
code.type	entity.name.type, support.type
code.line_number	constant.numeric.line-number
accent.primary	variable
accent.secondary	storage.type, storage.modifier
accent.tertiary	constant.other, variable.other.constant
success	markup.inserted
warning	markup.changed
error	invalid, message.error
info	string.other.link, support.constant

ThemeSettings Mapping

Editor-level settings are derived from semantic tokens:

Opaline Token	ThemeSettings Field
text.primary	foreground
bg.base	background
accent.primary	caret, accent
bg.highlight	line_highlight
bg.selection	selection
bg.panel	gutter
text.dim	gutter_foreground
border.focused	active_guide
border.unfocused	guide

Style Modifiers

If a named style exists that matches a code.* token (for example, keyword for code.keyword), its modifiers are included in the generated scope.