[news.eclipse.technology.imp] Re: How to get LPG to treat comments as te

[Ed Willink <ed@xxxxxxxxxxxxx>]

Ed Willink wrote:

> Instead it may be better to use an enhanced Token to which a 
> partial-line single-line-comment is attached as a suffix and to which 
> other paragraph and full-line single-line-comments are attached as 
> prefixes. The Tokens then parse normally but persist the comments for 
> those activities that require them.

Actually there's no need to do anything. Leave comments out of the grammar,
they can always be recovered later by a special purpose comment, newline,
whitespace analyzer.

The comments for 'currentToken' are those between 'previousToken'.end
and 'currentToken'.start and/or between 'currentToken'.end
and 'nextToken'.start. Working in this way will allow you to use
syntactic context to decide how much of A,B,C,D,E in

	int a;   // A
	// B
	/*  C */
	/**
         * D
         */
        // E
	int e;

belongs to int a, and how much to int e; It also gives
you more scope for inserting tabs for refactoring and other issues.

	Regards

		Ed Willink