Hi,

Charles Oliver Nutter wrote:
>>> 4. What is the declp operand to setclassvariable?
>>
>> Ah, it is obsolete variable.  rb_cvar_set C API need it, but not affect
>> any behavior.
> 
> How does the new getclassvariable/setclassvariable determine the class
> in which to look? Does it only look in the "current" class or the class
> of "self"?

I think so.

>>> 9. Shouldn't duparray take an array from the top of the stack and push
>>> it and a copy back down? Online it looks like it takes an array operand,
>>> which seems odd.
>>
>> Ah, I see.  This instruction means "putarray" (like "putstring").  This
>> instruction works like putstring.
> 
> Maybe name should change? I understand now.

Maybe yes.

>>> 11. I assume concatarray and checkincludearray are for internal use and
>>> not used directly as the implementation of Array#include? and Array#<<
>>> or concat, correct?
>>
>> Almost same.  But Array#include? can be replaced.
> 
> So these are used for manipulating internal arrays, such as those used
> for passing arguments, etc. They can also provide the base
> implementation of Array methods, though at least include? can be
> replaced. I think I understand.

This insn is used only in "when *args" syntax.


>>> 14. Is there a specification for the format of a compiled YARV script? I
>>> would like to start generating some test scripts and building a machine
>>> to execute them.
>>
>> What format?  YARVCore::InstructionSequence.compile or compile_file
>> methods help you?
> 
> Yes, they will help me...I will look at them. If there is a wiki
> somewhere, I can also write entries on compiled file format. Do you have
> a binary specification written down anywhere yet?

YARV doesn't decide binary format.  But you can get ruby literal
representation with ISeq serialize interface.


-- 
// SASADA Koichi at atdot dot net


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