Running ruby1.9 bytecode

[James Coglan]

[Note: parts of this message were removed to make it a legal post.]

Hi all,

I just found out about the VM::InstructionSequence.compile method for
turning Ruby code strings into ruby1.9 bytecode. Is there a standard method
of de/serializing this bytecode to/from files, and is there a way of running
bytecode directly? I'm looking at generating bytecode from another language
to get it to run on Ruby.

 

[Robert Dober]

Hi all,

I just found out about the VM::InstructionSequence.compile method for
turning Ruby code strings into ruby1.9 bytecode. Is there a standard method
of de/serializing this bytecode to/from files, and is there a way of running
bytecode directly? I'm looking at generating bytecode from another language
to get it to run on Ruby.

Quoting from the Pickaxe book
no, because the bytecode verifier is not ready yet, that seems the
only missing bit.
HTH
Robert


--
There are some people who begin the Zoo at the beginning, called
WAYIN, and walk as quickly as they can past every cage until they get
to the one called WAYOUT, but the nicest people go straight to the
animal they love the most, and stay there. ~ A.A. Milne (from
Winnie-the-Pooh)

 

[Rick DeNatale]

[Note: parts of this message were removed to make it a legal post.]

Quoting from the Pickaxe book
no, because the bytecode verifier is not ready yet, that seems the
only missing bit.
HTH
Robert

Well that's part of it. But, if by "generating bytecode from another
language" means, for instance, executing JVM bytecodes, I don't think it
will fly. The term bytecode here is being used rather generically. The YARV
"bytecodes" aren't the same as the JVM bytecodes, any more than Smalltalk-80
bytecodes are the same as either.

It's like the difference between an Intel and Motorola processor, both have
instruction sets with binary representations, but those instruction sets
aren't necessarily interchangeable.

Getting another language to produce YARV bytecodes would be an exercise for
the reader.
--
Rick DeNatale

Blog: http://talklikeaduck.denhaven2.com/
Twitter: http://twitter.com/RickDeNatale
WWR: http://www.workingwithrails.com/person/9021-rick-denatale
LinkedIn: http://www.linkedin.com/in/rickdenatale

 

[James Coglan]

[Note: parts of this message were removed to make it a legal post.]

Well that's part of it. But, if by "generating bytecode from another
language" means, for instance, executing JVM bytecodes, I don't think it
will fly. The term bytecode here is being used rather generically. The YARV
"bytecodes" aren't the same as the JVM bytecodes, any more than
Smalltalk-80
bytecodes are the same as either..

Getting another language to produce YARV bytecodes would be an exercise for
the reader.

I meant that I'd like to try and generate YARV bytecode from non-Ruby
source. Mostly a pie-in-the-sky idea, only just writing my first AST-walking
interpreter, just wondering if it's possible.

 

[Michael Malone]

I meant that I'd like to try and generate YARV bytecode from non-Ruby
source. Mostly a pie-in-the-sky idea, only just writing my first AST-walking
interpreter, just wondering if it's possible.

It's definitely possible. I suggest you take a look at the parrot
interpreter. It is a one-for-all interpreter (well, that's the aim,
anyway), which began life as an April Fool's joke that someone took one
step further. It officially hit version 1.0 the other day, so it should
be a good example for you. By one-for-all I mean, it's a generic
interpreter that can handle many languages, much like .NET and the clr,
I guess.

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[Robert Dober]

I meant that I'd like to try and generate YARV bytecode from non-Ruby
source. Mostly a pie-in-the-sky idea, only just writing my first AST-walking
interpreter, just wondering if it's possible.

Having YARV/Rubinius as a backend for other languages is certainly a
very reasonable idea.
And if I understood correctly it is planned to be possible in the
(near?) future.

Cheers
R.



--
There are some people who begin the Zoo at the beginning, called
WAYIN, and walk as quickly as they can past every cage until they get
to the one called WAYOUT, but the nicest people go straight to the
animal they love the most, and stay there. ~ A.A. Milne (from
Winnie-the-Pooh)