std.d.lexer requirements

[Christophe Travert]

Walter Bright , dans le message (digitalmars.D:174393), a écrit :
> If the delegate returns, then the lexer recovers.

That's an option, if there is only one way to recover (which is a 
reasonable assumption).

You wanted the delegate to "decide what to do with the errors (ignore, 
throw exception, or quit)".

Throwing is handled, but not ignore/quit. Jonathan's solution (delegate 
returning a bool) is good. It could also be a delegate returning an int, 
0 meaning continue, and any other value being an error code that can be 
retrieved later. It could also be a number of characters to skip (0 
meaning break).