std.d.lexer requirements

[deadalnix]

Le 02/08/2012 02:10, Walter Bright a écrit :
> 6. A single "Lexer" instance should be able to serially accept input
> ranges, sharing and updating one identifier table
>

I see the lexer as a function that take an range of char as input and 
give back a range of token. Does it make sense to make an instance of a 
lexer ?

> 7. It should accept a callback delegate for errors. That delegate should
> decide whether to:
> 1. ignore the error (and "Lexer" will try to recover and continue)
> 2. print an error message (and "Lexer" will try to recover and continue)
> 3. throw an exception, "Lexer" is done with that input range
>

Off topic, but it look like the condition proposal from H.S. Teoh and 
myself.

> Basically, I don't want anyone to be motivated to do a separate one
> after seeing this one.

That would be awesome !