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use base_db::{semantics::Span, DocumentData};
use rowan::{TextRange, TextSize};
use syntax::latex;
use crate::{RenameBuilder, RenameParams};
pub(super) fn prepare_rename(params: &RenameParams) -> Option<Span> {
let data = params.feature.document.data.as_tex()?;
let token = data
.root_node()
.token_at_offset(params.offset)
.find(|token| token.kind() == latex::COMMAND_NAME)?;
let range = token.text_range();
let text = token.text()[1..].into();
Some(Span::new(
text,
TextRange::new(range.start() + TextSize::of('\\'), range.end()),
))
}
pub(super) fn rename(builder: &mut RenameBuilder) -> Option<()> {
let name = prepare_rename(&builder.params)?;
for document in &builder.params.feature.project.documents {
let DocumentData::Tex(data) = &document.data else {
continue;
};
let mut edits = Vec::new();
for command in &data.semantics.commands {
if command.text == name.text {
let range = TextRange::new(command.range.start(), command.range.end());
edits.push(range);
}
}
builder
.result
.changes
.insert(*document, edits.iter().map(|&x| x.into()).collect());
}
Some(())
}
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