in reply to Re^35: aXML vs TT2
in thread aXML vs TT2

I want to start by saying your efforts are very much appreciated, whether they ultimately turn out to be fruitful or not.

Yes, you have caused the addition of 2 extra lines of code, and a standardisation of the now 6 specials.

But, no, I've never needed these things before and they seem to be a symptom of having to deal with non-aXML compliant code and it's related issues rather than anything actually wrong with aXML itself.

Yes, Corion said that the return values should also be compiled as well, which is where I lost him because I can't think of anyway to know ahead of time what a given tag is going to return. Hence I'm with you on your side of that debate, and I have a feeling that following Corion's suggestion to write a compiler for it may of been a wild goose chase and a waste of about 2 months worth of programming time on my part.

However, having said that somehow Perl does manage to execute the aXML code correctly so it must be compiling it in some manner prior to doing that.

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Re^37: aXML vs TT2
by ikegami (Patriarch) on Oct 24, 2011 at 01:13 UTC

    However, having said that somehow Perl does manage to execute the aXML code correctly so it must be compiling it in some manner prior to doing that.

    Perl does not execute any aXML code at all. It executes the code of your parser and plugins. Your parser interprets the aXML code.

      Ok that makes sense yeh. Perl interprets the code of the engine, and builds a compiled system out of it capable of interpretting both aXML and Perl. You know what that means?

      As far as I can tell, Perl 5 code gets interpretted and compiled into Perl 4 code, which gets interpetted and compiled into Perl 3 code and so on down to Perl 1 then Opcodes then machine code.

      So if aXML was written in Perl 6 instead of Perl 5, and my name happened to be "Larry Wall".. instead of dealing with some unknown bolshe troll guy who no one has ever heard of, you would be getting all excited about being involved with the groundwork of "Perl 7".

      No?

        I really recommend you fact-check your assumptions. Your theory of how Perl 5 works is intriguing but wrong. I recommend that you look at other languages than Perl to learn about how languages and compilers work.

        As far as I can tell, Perl 5 code gets interpretted and compiled into Perl 4 code, which gets interpetted and compiled into Perl 3 code and so on down to Perl 1 then Opcodes then machine code.

        For Perl 5 and probably all earlier versions, Perl code gets compiled into Perl opcodes, and these are executed by a virtual machine.

        So if aXML was written in Perl 6 instead of Perl 5, and my name happened to be "Larry Wall".. instead of dealing with some unknown bolshe troll guy who no one has ever heard of, you would be getting all excited about being involved with the groundwork of "Perl 7".

        Perl 6 is exciting because it well designed and addresses a lot of problem areas in Perl 5, not because it was written in Perl 5 (which it isn't), and not because it's by Larry Wall (which it isn't).

        aXML is not exciting, it's not well designed, and addresses problems that already have more elegant solutions.