Re: [boost] Re: Any interest for a parser class?

From: David A. Greene (greened_at_[hidden])
Date: 2002-01-18 16:19:20

Douglas Gregor wrote:

> On Thursday 17 January 2002 03:19 pm, you wrote:
> 
>>If I understand you correctly, this model forces the programmer into
>>writing code like this:
>>
>>// Pseudo-code
>>while ((arg = parser(i, j)) != PARSE_END) {
>>    // Do something with this argument
>>}
>>
>>Other bits of discussion have focused on speparating syntax
>>analysis and semantic action.  This model doesn't allow that
>>unless "Do something with this argument" builds an AST or
>>parse tree, which a parser should already do.
> 
> I depends on how you define the Parser concept, of course. It could return an 
> AST,or perhaps an argument*, where argument is a class that can contain any 
> argument that will be passed to the user. The interface between the CLA 
> parser and other arbitrary parsers need not equal the interface between the 
> user and the CLA parser.

Er...you lost me.  :)  What "other arbitrary parsers" are there?
I'm missing something important in your design, I think.

                            -Dave

-- 
"Some little people have music in them, but Fats, he was all music,
  and you know how big he was."  --  James P. Johnson