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use tree_sitter_highlight::{Highlight, HighlightConfiguration, HighlightEvent, Highlighter};
static HIGHLIGHT_NAMES: [&'static str; 29] = [
"attribute",
"boolean",
"comment",
"conditional",
"constant",
"constant.builtin",
"constructor",
"field",
"function",
"function.builtin",
"function.call",
"keyword",
"keyword.function",
"keyword.operator",
"keyword.return",
"label",
"method",
"method.call",
"number",
"operator",
"parameter",
"preproc",
"punctuation.bracket",
"punctuation.delimiter",
"repeat",
"string",
"string.escape",
"variable",
"variable.builtin",
];
pub fn new_highlight_configuration() -> HighlightConfiguration {
let mut highlight_config = HighlightConfiguration::new(
tree_sitter_lua::language(),
"lua",
tree_sitter_lua::HIGHLIGHTS_QUERY,
tree_sitter_lua::INJECTIONS_QUERY,
tree_sitter_lua::LOCALS_QUERY,
)
.unwrap();
highlight_config.configure(&HIGHLIGHT_NAMES);
highlight_config
}
pub fn highlight_name(h: Highlight) -> &'static str {
HIGHLIGHT_NAMES[h.0]
}
pub fn highlighter_split<'a>(
s: &'a [u8],
config: &'a HighlightConfiguration,
) -> Vec<(Option<Highlight>, &'a str)> {
let mut splits = Vec::new();
let mut current = None;
let mut highlighter = Highlighter::new();
let highlights = highlighter.highlight(config, s, None, |_| None).unwrap();
for event in highlights {
match event.unwrap() {
HighlightEvent::Source { start, end } => {
let group = std::str::from_utf8(&s[start..end]).unwrap();
for line in group.lines() {
splits.push((current, line));
splits.push((current, "\n"));
}
if !group.ends_with("\n") {
splits.pop();
}
}
HighlightEvent::HighlightStart(s) => current = Some(s),
HighlightEvent::HighlightEnd => current = None,
}
}
splits
}
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