[ruby/reline] Correspond to refactored RubyLex

(https://github.com/ruby/reline/pull/498)

* Correspond to refactored RubyLex

ref: https://github.com/ruby/irb/pull/503

* Fix test_yamatanooroti

test/reline/yamatanooroti/termination_checker.rb

@@ -4,11 +4,11 @@ require 'irb/ruby-lex'
 class TerminationChecker < RubyLex
   def terminated?(code)
     code.gsub!(/\n*$/, '').concat("\n")
-    @tokens = self.class.ripper_lex_without_warning(code)
-    continue = process_continue
-    code_block_open = check_code_block(code)
-    indent = process_nesting_level
-    ltype = process_literal_type
+    tokens = self.class.ripper_lex_without_warning(code)
+    continue = process_continue(tokens)
+    code_block_open = check_code_block(code, tokens)
+    indent = process_nesting_level(tokens)
+    ltype = process_literal_type(tokens)
     if code_block_open or ltype or continue or indent > 0
       false
     else
@@ -19,9 +19,7 @@ end
 
 class AutoIndent < RubyLex
   def initialize
-    context = Struct.new("MockIRBContext", :auto_indent_mode, :workspace, :local_variables).new(true, nil, [])
-    set_input(self, context: context)
-    set_auto_indent(context)
+    @context = Struct.new("MockIRBContext", :auto_indent_mode, :workspace, :local_variables).new(true, nil, [])
   end
 
   def auto_indent(&block)