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Add emacs function for extend shirnk selection

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This commit is contained in:
Aleksey Kladov 2018-09-19 00:46:10 +03:00
parent 79293d2593
commit d6c7030aeb
4 changed files with 123 additions and 3 deletions
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6
crates/ra_syntax/src/algo/mod.rs
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@ -78,7 +78,11 @@ impl<'f> Iterator for LeafAtOffset<'f> {
}
pub fn find_covering_node(root: SyntaxNodeRef, range: TextRange) -> SyntaxNodeRef {
assert!(is_subrange(root.range(), range));
assert!(
is_subrange(root.range(), range),
"node range: {:?}, target range: {:?}",
root.range(), range,
);
let (left, right) = match (
find_leaf_at_offset(root, range.start()).right_biased(),
find_leaf_at_offset(root, range.end()).left_biased()