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use lsp_types::{HoverParams, MarkupKind};
use rowan::ast::AstNode;
use crate::{
citation::field::text::TextFieldData,
features::cursor::CursorContext,
syntax::bibtex::{self, HasName, HasValue},
};
use super::HoverResult;
pub(super) fn find_string_reference_hover(
context: &CursorContext<HoverParams>,
) -> Option<HoverResult> {
let data = context.request.main_document().data.as_bibtex()?;
let name = context
.cursor
.as_bibtex()
.filter(|token| token.kind() == bibtex::NAME)
.filter(|token| {
let parent = token.parent().unwrap();
bibtex::Value::can_cast(parent.kind()) || bibtex::StringDef::can_cast(parent.kind())
})?;
for string in bibtex::SyntaxNode::new_root(data.green.clone())
.children()
.filter_map(bibtex::StringDef::cast)
{
if string
.name_token()
.map_or(false, |token| token.text() == name.text())
{
let value = TextFieldData::parse(&string.value()?)?.text;
return Some(HoverResult {
range: name.text_range(),
value,
value_kind: MarkupKind::PlainText,
});
}
}
None
}
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