[antlr-interest] lexer: display all rules matched

[Gavin Lambert]

At 08:52 29/08/2007, Edwards, Waverly wrote:
> >>For the purposes of tests, just create an instance of the 
> lexer and ask it for all the tokens.
>
>I'll have to more homework as I haven't seen an example of how 
>this is done.  The only way I've seen this done
>is by chaining together parser or lexical rules and setting an 
>action to it.  I have two problems with this.
>1.  The starting rule appears to be the type that gets returned 
>when you chain rules.
>2.  There isn't a way to determine which lexical rule is being 
>used to match the text.

No, no parser at all.  You know the code snippet you put in your 
main routine to create a lexer and parser, then call the 
entrypoint of your parser?  Leave out the bit that creates the 
parser and calls its entrypoint, and replace it with some code 
that reads from the lexer (or lexer's token stream) directly. 
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