question: private void beforeValue ( ) throws JSONException { if ( stack . isEmpty ( ) ) { return ; } Scope context = peek ( ) ; if ( context == Scope . EMPTY_ARRAY ) { replaceTop ( Scope . NONEMPTY_ARRAY ) ; newline ( ) ; } else if ( context == Scope . NONEMPTY_ARRAY ) { out . append ( ',' ) ; newline ( ) ; } else if ( context == Scope . DANGLING_KEY ) { out . append ( indent == null ? ":" : ": " ) ; replaceTop ( Scope . NONEMPTY_OBJECT ) ; } else if ( context != Scope . NULL ) { throw new JSONException ( "Nesting problem" ) ; } }
target:  Inserts any necessary separators and whitespace before a literal value, inline array, or inline object. Also adjusts the stack to expect either a closing bracket or another element.