1 files changed, 44 insertions, 0 deletions
diff --git a/lib/prism/node_ext.rb b/lib/prism/node_ext.rb
index 08d9e9f36a..264d3a5c1e 100644
--- a/lib/prism/node_ext.rb
+++ b/lib/prism/node_ext.rb
@@ -52,4 +52,48 @@ module Prism
       o
     end
   end
+
+  class ConstantReadNode < Node
+    # Returns the list of parts for the full name of this constant. For example: [:Foo]
+    def full_name_parts
+      [name]
+    end
+
+    # Returns the full name of this constant. For example: "Foo"
+    def full_name
+      name.name
+    end
+  end
+
+  class ConstantPathNode < Node
+    # Returns the list of parts for the full name of this constant path. For example: [:Foo, :Bar]
+    def full_name_parts
+      parts = [child.name]
+      current = parent
+
+      while current.is_a?(ConstantPathNode)
+        parts.unshift(current.child.name)
+        current = current.parent
+      end
+
+      parts.unshift(current&.name || :"")
+    end
+
+    # Returns the full name of this constant path. For example: "Foo::Bar"
+    def full_name
+      full_name_parts.join("::")
+    end
+  end
+
+  class ConstantPathTargetNode < Node
+    # Returns the list of parts for the full name of this constant path. For example: [:Foo, :Bar]
+    def full_name_parts
+      (parent&.full_name_parts || [:""]).push(child.name)
+    end
+
+    # Returns the full name of this constant path. For example: "Foo::Bar"
+    def full_name
+      full_name_parts.join("::")
+    end
+  end
 end