diff options
Diffstat (limited to 'crates/ra_tt')
-rw-r--r-- | crates/ra_tt/src/buffer.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/crates/ra_tt/src/buffer.rs b/crates/ra_tt/src/buffer.rs index 56b844b8b..940f2b807 100644 --- a/crates/ra_tt/src/buffer.rs +++ b/crates/ra_tt/src/buffer.rs | |||
@@ -166,4 +166,19 @@ impl<'a> Cursor<'a> { | |||
166 | Cursor::create(self.buffer, EntryPtr(self.ptr.0, self.ptr.1 + 1)) | 166 | Cursor::create(self.buffer, EntryPtr(self.ptr.0, self.ptr.1 + 1)) |
167 | } | 167 | } |
168 | } | 168 | } |
169 | |||
170 | /// Bump the cursor, if it is a subtree, returns | ||
171 | /// a cursor into that subtree | ||
172 | pub fn bump_subtree(self) -> Cursor<'a> { | ||
173 | match self.entry() { | ||
174 | Some(Entry::Subtree(_, _)) => self.subtree().unwrap(), | ||
175 | _ => self.bump(), | ||
176 | } | ||
177 | } | ||
178 | |||
179 | /// Check whether it is a top level | ||
180 | pub fn is_root(&self) -> bool { | ||
181 | let entry_id = self.ptr.0; | ||
182 | return entry_id.0 == 0; | ||
183 | } | ||
169 | } | 184 | } |