[Fix #10559] Fix crash in code length calculation

Closes #10559

changelog/fix_crash_in_codelength.md

@@ -0,0 +1 @@
+ * [#10559](https://github.com/rubocop/rubocop/issues/10559): Fix crash in code length calculation. ([@tejasbubane][])

lib/rubocop/cop/metrics/utils/code_length_calculator.rb

@@ -156,7 +156,7 @@ def count_comments?
 
           def omit_length(descendant)
             parent = descendant.parent
-            return 0 if another_args?(parent)
+            return 0 if another_args?(parent) || pos_missing?(parent)
 
             [
               parent.loc.begin.end_pos != descendant.loc.expression.begin_pos,
@@ -167,6 +167,11 @@ def omit_length(descendant)
           def another_args?(node)
             node.call_type? && node.arguments.count > 1
           end
+
+          def pos_missing?(node)
+            loc = node.loc
+            !(loc.begin && loc.end)
+          end
         end
       end
     end

spec/rubocop/cop/metrics/utils/code_length_calculator_spec.rb

@@ -158,6 +158,17 @@ def test
         expect(length).to eq(1)
       end
 
+      it 'counts single line correctly if asked folding without parens' do
+        source = parse_source(<<~RUBY)
+          def test
+            foo foo: :bar, baz: :quux
+          end
+        RUBY
+
+        length = described_class.new(source.ast, source, foldable_types: %i[hash]).calculate
+        expect(length).to eq(1)
+      end
+
       it 'counts single line hash with line breaks correctly if asked folding' do
         source = parse_source(<<~RUBY)
           def test