programming/tads2/examples/brackets.t

/* This is a simple use of the parseError function to enclose
*  special parser messages in brackets.  Requires at least
*  TADS 2.0, due to the use of parseError.
*/

parseError: function( errno, str )
{
	/* Exclude disambiguation messages, which start at 100,
	*  from bracket use.
	*/
	if ( errno < 100 ) return( '[' + str + ']' );
	
	/* Use a left bracket for words designating the beginning
	*  of certain error messages.
	*/
	if ( errno = 110 or errno = 140 ) return( '[' + str );
	
	/* Use a right bracket for punctuation designating the end
	*  of certain error messages.
	*/
	if ( errno = 115 or errno = 143 ) return( str + ']' );
	
	/* If this spot is reached, no brackets are necessary, so
	*  simply return a nil value.
	*/
	return( nil );
}

/* There you have it!  Just include this in your program and
*  watch those brackets magically appear.  Send comments to:
*    bweber@bucknell.edu
*/