Gerry <gerry@jackson9000.fsnet.co.uk> writes: On 17 Sep, 21:32, an...@mips.complang.tuwien.ac.at (Anton Ertl) wrote: [>>Gerry] Well yes, but the point I tried to make was that the caller of EXECUTE-PARSING-FILE loses control until the word executed (xyz-helper in your example) has completed, whereupon the file is closed. So the caller cannot process the file itself...

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Gerry wrote: [...] OK I'll work one up, but I would prefer to do it via a FILE- SOURCE proposal with EXECUTE-PARSING-FILE as a fall-back. Good! As a data point, the approach that I have followed has been to straightforwardly mimic the usual input stream words on a line file input stream with a file text input buffer and parse area and a file input stream stack. So, there are words like: LFSOURCE LFPARSE-AREA@ ...

Gerry wrote: On 18 Sep, 12:26, Josh Grams <josh@qualdan.com> wrote: The sort of thing I was thinking of is exemplified in an XML file where use of an external style sheet can be specified. A cascaded style sheet has a totally different format to XML and is likely to be processed by different code. OK, but I still don't see how the choosing EXECUTE-PARSING-FILE instead of FILE-SOURCE affects the re-entrancy of anything. ...

On 18 Sep, 21:11, coos <chfo...@hccnet.nl> wrote: Op Thu, 18 Sep 2008 12:55:58 -0700 (PDT) schreef Gerry: On 17 Sep, 21:32, an...@mips.complang.tuwien.ac.at (Anton Ertl) wrote: [...] Also it precludes a design where an application...-helper to do what you want. That is true. I'm not saying that such delegation is a bad idea, but I'd rather the system didn't dictate the design of my software. Gerry

On 18 Sep, 12:26, Josh Grams <j...@qualdan.com> wrote: Gerry wrote: On 16 Sep, 02:13, Josh Grams <j...@qualdan.com> wrote: But...if you want to process a nested file, wouldn't the code need to be re-entrant ... agreement on EXECUTE-PARSING-FILE than FILE-SOURCE/CLOSE-SOURCE. You may be right, Anton Ertl has stated that he'd like to see an Rfd on the subject. I think I'll try writing one and perhaps we'll see. Gerry

Op Thu, 18 Sep 2008 12:55:58 -0700 (PDT) schreef Gerry: On 17 Sep, 21:32, an...@mips.complang.tuwien.ac.at (Anton Ertl) wrote: [...] Also it precludes a design where an application opens a file source and then returns to whatever called it to parse and process the file. No. EXECUTE-PARSING-FILE takes a file-id, so your application would open the file, then pass the resultin file-id to its caller, which ...

... is perceived as a problem by more than one person perhaps we should consider standardising a solution, if it was the EXECUTE-PARSING-FILE solution I would prefer a better name. I would love to see an RfD from you on this, and I'm sure that the naming issue will create a lot of discussion, as usual. OK I'll work one up, but I would prefer to do it via a FILE- SOURCE proposal with EXECUTE-PARSING-FILE as a fall-back. Gerry

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Gerry wrote: On 16 Sep, 02:13, Josh Grams <josh@qualdan.com> wrote: But...if you want to process a nested file, wouldn't the code need to be re-entrant even if you were using FILE-SOURCE/CLOSE-SOURCE? Not necessarily, we're discussing parsing and processing a file in a particular format. The nested file could be a part of that format, processed by a particular word called to deal with it after FILE-SOURCE was executed...