Preserve absolute Ruby constant references

lib/decode/language/ruby/parser.rb

@@ -502,7 +502,10 @@ def nested_path_for(node, path = [])
 				end
 
 				def nested_name_for(node)
-					nested_path_for(node)&.join("::")
+					case node&.type
+					when :constant_read_node, :constant_path_node
+						return node.full_name
+					end
 				end
 
 				def symbol_name_for(node)

test/decode/language/ruby/.fixtures/classes.rb

@@ -14,3 +14,9 @@ class << self
 
 class My::Nested::Child
 end
+
+class QualifiedChild < My::Parent
+end
+
+class AbsoluteChild < ::Parent
+end

test/decode/language/ruby/parser.rb

@@ -33,13 +33,17 @@
 			expect(definitions[1].short_form).to be == "class Child"
 			expect(definitions[2].short_form).to be == "class << self"
 			expect(definitions[3].short_form).to be == "class Child"
+			expect(definitions[4].short_form).to be == "class QualifiedChild"
+			expect(definitions[5].short_form).to be == "class AbsoluteChild"
 		end
 
 		it "has long form" do
 			expect(definitions[0].long_form).to be == "class Parent"
 			expect(definitions[1].long_form).to be == "class Child < Parent"
 			expect(definitions[2].long_form).to be == "class << self"
 			expect(definitions[3].long_form).to be == "class My::Nested::Child"
+			expect(definitions[4].long_form).to be == "class QualifiedChild < My::Parent"
+			expect(definitions[5].long_form).to be == "class AbsoluteChild < ::Parent"
 		end
 
 		it "should handle singleton classes" do