Dedupe code

Author: SuperSandro2000

libixx/src/index.rs

@@ -193,43 +193,32 @@ impl IndexBuilder {
     }
   }
 
+  #[must_use]
+  fn push_segment(&mut self, segment: &[u8], label_idx: u8) -> Label {
+    if let Some((entry_idx, label_idx)) = self.label_cache.get(segment) {
+      return Label::Reference(Reference {
+        entry_idx: *entry_idx as u64,
+        label_idx: *label_idx,
+      });
+    }
+
+    self
+      .label_cache
+      .insert(segment.to_vec(), (self.index.entries.len(), label_idx));
+
+    Label::InPlace(segment.to_vec())
+  }
+
   pub fn push(&mut self, scope_id: u8, name: &str) {
     // optimize, if there is no dot in the name, compression does not make sense
     let labels = if name.contains('.') {
       name
         .split('.')
         .enumerate()
-        .map(|(label_idx, segment)| {
-          let segment = segment.as_bytes();
-
-          if let Some((entry_idx, label_idx)) = self.label_cache.get(segment) {
-            return Label::Reference(Reference {
-              entry_idx: *entry_idx as u64,
-              label_idx: *label_idx,
-            });
-          }
-
-          self
-            .label_cache
-            .insert(segment.to_vec(), (self.index.entries.len(), label_idx as u8));
-
-          Label::InPlace(segment.to_vec())
-        })
+        .map(|(label_idx, segment)| self.push_segment(segment.as_bytes(), label_idx as u8))
         .collect()
     } else {
-      let segment = name.as_bytes();
-
-      if let Some((entry_idx, label_idx)) = self.label_cache.get(segment) {
-        vec![Label::Reference(Reference {
-          entry_idx: *entry_idx as u64,
-          label_idx: *label_idx,
-        })]
-      } else {
-        self
-          .label_cache
-          .insert(segment.to_vec(), (self.index.entries.len(), 0));
-        vec![Label::InPlace(name.into())]
-      }
+      vec![self.push_segment(name.as_bytes(), 0)]
     };
 
     self.index.entries.push(Entry { scope_id, labels });