[antlr-interest] Performance and LA(int)

[Paul J. Lucas]

On Wed, 23 Feb 2005, Paul J. Lucas wrote:

> 	Thought: could I override LA(int) in my own lexer and implement
> 	caching?  When/how would I know to invalidate the cache?  By
> 	also overriding consume()?

	OK, so I did this.  (I also overrode rewind() and made sure to
	flush the cache whenever I push/pop a lexer.)

	I got a 40% performance increase!

	- Paul