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-rw-r--r--crates/ra_syntax/src/algo.rs7
1 files changed, 6 insertions, 1 deletions
diff --git a/crates/ra_syntax/src/algo.rs b/crates/ra_syntax/src/algo.rs
index e8cf0d4b5..e2b4f0388 100644
--- a/crates/ra_syntax/src/algo.rs
+++ b/crates/ra_syntax/src/algo.rs
@@ -2,7 +2,7 @@ pub mod visit;
2 2
3use rowan::TransparentNewType; 3use rowan::TransparentNewType;
4 4
5use crate::{SyntaxNode, TextRange, TextUnit, AstNode}; 5use crate::{SyntaxNode, TextRange, TextUnit, AstNode, Direction};
6 6
7pub use rowan::LeafAtOffset; 7pub use rowan::LeafAtOffset;
8 8
@@ -29,6 +29,11 @@ pub fn find_node_at_offset<N: AstNode>(syntax: &SyntaxNode, offset: TextUnit) ->
29 find_leaf_at_offset(syntax, offset).find_map(|leaf| leaf.ancestors().find_map(N::cast)) 29 find_leaf_at_offset(syntax, offset).find_map(|leaf| leaf.ancestors().find_map(N::cast))
30} 30}
31 31
32/// Finds the first sibling in the given direction which is not `trivia`
33pub fn non_trivia_sibling(node: &SyntaxNode, direction: Direction) -> Option<&SyntaxNode> {
34 node.siblings(direction).skip(1).find(|node| !node.kind().is_trivia())
35}
36
32pub fn find_covering_node(root: &SyntaxNode, range: TextRange) -> &SyntaxNode { 37pub fn find_covering_node(root: &SyntaxNode, range: TextRange) -> &SyntaxNode {
33 SyntaxNode::from_repr(root.0.covering_node(range)) 38 SyntaxNode::from_repr(root.0.covering_node(range))
34} 39}