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use lsp_types::{FoldingRange, FoldingRangeKind, FoldingRangeParams, Range};
use rowan::ast::AstNode;
use crate::{
syntax::{bibtex, latex},
DocumentData, LineIndexExt,
};
use super::FeatureRequest;
pub fn find_foldings(request: FeatureRequest<FoldingRangeParams>) -> Vec<FoldingRange> {
let mut foldings = Vec::new();
let main_document = request.main_document();
match &main_document.data {
DocumentData::Latex(data) => {
for node in latex::SyntaxNode::new_root(data.green.clone()).descendants() {
if let Some(folding) = latex::Environment::cast(node.clone())
.map(|node| latex::small_range(&node))
.or_else(|| {
latex::Section::cast(node.clone()).map(|node| latex::small_range(&node))
})
.or_else(|| latex::EnumItem::cast(node).map(|node| latex::small_range(&node)))
.map(|node| main_document.line_index.line_col_lsp_range(node))
.map(create_range)
{
foldings.push(folding);
}
}
}
DocumentData::Bibtex(data) => {
for node in bibtex::SyntaxNode::new_root(data.green.clone()).descendants() {
if matches!(
node.kind(),
bibtex::PREAMBLE | bibtex::STRING | bibtex::ENTRY
) {
foldings.push(create_range(
main_document
.line_index
.line_col_lsp_range(node.text_range()),
));
}
}
}
DocumentData::BuildLog(_) => {}
}
foldings
}
fn create_range(range: Range) -> FoldingRange {
FoldingRange {
start_line: range.start.line,
start_character: Some(range.start.character),
end_line: range.end.line,
end_character: Some(range.end.character),
kind: Some(FoldingRangeKind::Region),
}
}
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