organizize

1 files changed, 0 insertions, 45 deletions

diff --git a/src/algo/walk.rs b/src/algo/walk.rs
deleted file mode 100644
index a50ec2a09..000000000
--- a/src/algo/walk.rs
+++ /dev/null
@@ -1,45 +0,0 @@
-use SyntaxNodeRef;
-
-pub fn preorder<'a>(root: SyntaxNodeRef<'a>) -> impl Iterator<Item = SyntaxNodeRef<'a>> {
-    walk(root).filter_map(|event| match event {
-        WalkEvent::Enter(node) => Some(node),
-        WalkEvent::Exit(_) => None,
-    })
-}
-
-#[derive(Debug, Copy, Clone)]
-pub enum WalkEvent<'a> {
-    Enter(SyntaxNodeRef<'a>),
-    Exit(SyntaxNodeRef<'a>),
-}
-
-pub fn walk<'a>(root: SyntaxNodeRef<'a>) -> impl Iterator<Item = WalkEvent<'a>> {
-    let mut done = false;
-    ::itertools::unfold(WalkEvent::Enter(root), move |pos| {
-        if done {
-            return None;
-        }
-        let res = *pos;
-        *pos = match *pos {
-            WalkEvent::Enter(node) => match node.first_child() {
-                Some(child) => WalkEvent::Enter(child),
-                None => WalkEvent::Exit(node),
-            },
-            WalkEvent::Exit(node) => {
-                if node == root {
-                    done = true;
-                    WalkEvent::Exit(node)
-                } else {
-                    match node.next_sibling() {
-                        Some(sibling) => WalkEvent::Enter(sibling),
-                        None => match node.parent() {
-                            Some(node) => WalkEvent::Exit(node),
-                            None => WalkEvent::Exit(node),
-                        },
-                    }
-                }
-            }
-        };
-        Some(res)
-    })
-}