[Fix #14123] Fix an error for Lint/BooleanSymbol

This PR fixes an infinite loop error for `Lint/BooleanSymbol`
when using the rocket hash syntax with a boolean symbol key.

Fixes #14123.

Author: koic

changelog/fix_an_error_lint_boolean_symbol.md

@@ -0,0 +1 @@
+* [#14123](https://github.com/rubocop/rubocop/issues/14123): Fix an infinite loop error for `Lint/BooleanSymbol` when using the rocket hash syntax with a boolean symbol key. ([@koic][])

lib/rubocop/cop/lint/boolean_symbol.rb

@@ -48,7 +48,7 @@ def on_sym(node)
         def autocorrect(corrector, node)
           boolean_literal = node.source.delete(':')
           parent = node.parent
-          if parent&.pair_type? && node.equal?(parent.children[0])
+          if parent&.pair_type? && parent.colon? && node.equal?(parent.children[0])
             corrector.remove(parent.loc.operator)
             boolean_literal = "#{node.source} =>"
           end

spec/rubocop/cop/lint/boolean_symbol_spec.rb

@@ -23,6 +23,19 @@
     RUBY
   end
 
+  context 'when using the rocket hash syntax' do
+    it 'registers an offense when using a boolean symbol key' do
+      expect_offense(<<~RUBY)
+        { :false => 42 }
+          ^^^^^^ Symbol with a boolean name - you probably meant to use `false`.
+      RUBY
+
+      expect_correction(<<~RUBY)
+        { false => 42 }
+      RUBY
+    end
+  end
+
   context 'when using the new hash syntax' do
     it 'registers an offense when using `true:`' do
       expect_offense(<<~RUBY)