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use crate::syntax::*;
use crate::workspace::*;
use futures_boxed::boxed;
use lsp_types::{FoldingRange, FoldingRangeKind, FoldingRangeParams};
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct LatexEnvironmentFoldingProvider;
impl FeatureProvider for LatexEnvironmentFoldingProvider {
type Params = FoldingRangeParams;
type Output = Vec<FoldingRange>;
#[boxed]
async fn execute<'a>(
&'a self,
request: &'a FeatureRequest<FoldingRangeParams>,
) -> Vec<FoldingRange> {
let mut foldings = Vec::new();
if let SyntaxTree::Latex(tree) = &request.document().tree {
for environment in &tree.env.environments {
let start = environment.left.command.end();
let end = environment.right.command.start();
foldings.push(FoldingRange {
start_line: start.line,
start_character: Some(start.character),
end_line: end.line,
end_character: Some(end.character),
kind: Some(FoldingRangeKind::Region),
})
}
}
foldings
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_multiline() {
let foldings = test_feature(
LatexEnvironmentFoldingProvider,
FeatureSpec {
files: vec![FeatureSpec::file("foo.tex", "\\begin{foo}\n\\end{foo}")],
main_file: "foo.tex",
..FeatureSpec::default()
},
);
assert_eq!(
foldings,
vec![FoldingRange {
start_line: 0,
start_character: Some(11),
end_line: 1,
end_character: Some(0),
kind: Some(FoldingRangeKind::Region),
}]
);
}
#[test]
fn test_bibtex() {
let foldings = test_feature(
LatexEnvironmentFoldingProvider,
FeatureSpec {
files: vec![FeatureSpec::file("foo.bib", "@article{foo, bar = baz}")],
main_file: "foo.bib",
..FeatureSpec::default()
},
);
assert!(foldings.is_empty());
}
}
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