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use std::sync::Arc;
use lsp_types::RenameParams;
use rowan::{ast::AstNode, TextRange};
use rustc_hash::FxHashMap;
use crate::{
features::cursor::{CursorContext, HasPosition},
syntax::latex,
};
use super::{Indel, RenameResult};
pub(super) fn prepare_label_rename<P: HasPosition>(
context: &CursorContext<P>,
) -> Option<TextRange> {
let (_, range) = context.find_label_name_key()?;
Some(range)
}
pub(super) fn rename_label(context: &CursorContext<RenameParams>) -> Option<RenameResult> {
prepare_label_rename(context)?;
let (name_text, _) = context.find_label_name_key()?;
let mut changes = FxHashMap::default();
for document in context.request.workspace.documents_by_uri.values() {
if let Some(data) = document.data.as_latex() {
let mut edits = Vec::new();
for node in latex::SyntaxNode::new_root(data.green.clone()).descendants() {
if let Some(range) = latex::LabelDefinition::cast(node.clone())
.and_then(|label| label.name())
.and_then(|name| name.key())
.filter(|name| name.to_string() == name_text)
.map(|name| latex::small_range(&name))
{
edits.push(Indel {
delete: range,
insert: context.request.params.new_name.clone(),
});
}
latex::LabelReference::cast(node.clone())
.and_then(|label| label.name_list())
.into_iter()
.flat_map(|label| label.keys())
.filter(|name| name.to_string() == name_text)
.for_each(|name| {
edits.push(Indel {
delete: latex::small_range(&name),
insert: context.request.params.new_name.clone(),
});
});
if let Some(label) = latex::LabelReferenceRange::cast(node.clone()) {
if let Some(name1) = label
.from()
.and_then(|name| name.key())
.filter(|name| name.to_string() == name_text)
{
edits.push(Indel {
delete: latex::small_range(&name1),
insert: context.request.params.new_name.clone(),
});
}
if let Some(name2) = label
.from()
.and_then(|name| name.key())
.filter(|name| name.to_string() == name_text)
{
edits.push(Indel {
delete: latex::small_range(&name2),
insert: context.request.params.new_name.clone(),
});
}
}
}
changes.insert(Arc::clone(&document.uri), edits);
}
}
Some(RenameResult { changes })
}
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