nl_tokens: ebnf code_block :: = { ( inner_statements | top_statements ) }
pl_tokens: function ( top ) { const result = this . node ( "block" ) ; this . expect ( "{" ) && this . next ( ) ; const body = <mask> ? this . read_top_statements ( ) : this . read_inner_statements ( ) ; this . expect ( "}" ) && this . next ( ) ; return result ( null , body ) ; }