__ENCODING__   __FILE__   __LINE__   accessible   alias   arg   arg_expr   args   array   assign   assignable   associate   attr_asgn   back_ref   begin   begin_body   begin_keyword   binary_op   block   block_pass   blockarg   blockarg_expr   call_lambda   call_method   call_type_for_dot   case   character   complex   compstmt   condition   condition_mod   const   const_fetch   const_global   const_op_assignable   cvar   dedent_string   def_class   def_method   def_module   def_sclass   def_singleton   false   float   for   gvar   ident   index   index_asgn   integer   ivar   keyword_cmd   kwarg   kwoptarg   kwrestarg   kwsplat   logical_op   loop   loop_mod   match_op   modernize   multi_assign   multi_lhs   new   nil   not_op   nth_ref   objc_kwarg   objc_restarg   objc_varargs   op_assign   optarg   pair   pair_keyword   pair_list_18   pair_quoted   postexe   preexe   procarg0   range_exclusive   range_inclusive   rational   regexp_compose   regexp_options   rescue_body   restarg   restarg_expr   self   shadowarg   splat   string   string_compose   string_internal   symbol   symbol_compose   symbol_internal   symbols_compose   ternary   true   unary_num   unary_op   undef_method   when   word   words_compose   xstring_compose  

emit_file_line_as_literals	[RW]	If set to true, `FILE` and `LINE` are transformed to literal nodes. For example, `s(:str, "lib/foo.rb")` and `s(:int, 10)`. If set to false, `FILE` and `LINE` are emitted as-is, i.e. as `s(:FILE)` and `s(:LINE)` nodes. Source maps are identical in both cases. @return [Boolean]
emit_lambda	[RW]	AST compatibility attribute; since `-> {}` is not semantically equivalent to `lambda {}`, all new code should set this attribute to true. If set to false (the default), `-> {}` is emitted as `s(:block, s(:send, nil, :lambda), s(:args), nil)`. If set to true, `-> {}` is emitted as `s(:block, s(:lambda), s(:args), nil)`. @return [Boolean]
emit_procarg0	[RW]	AST compatibility attribute; block arguments of `m { |a| }` are not semantically equivalent to block arguments of `m { |a,| }` or `m { |a, b| }`, all new code should set this attribute to true. If set to false (the default), arguments of `m { |a| }` are emitted as `s(:args, s(:arg, :a))` If set to true, arguments of `m { |a| }` are emitted as `s(:args, s(:procarg0, :a)) @return [Boolean]
parser	[RW]	@api private