Something like ...
Description --> tool --> Java --> javac --> bytecode --> jit --> cpu
As software gets more complicated and is required to do more things there
are only 2 choices.
1. Write more code and generators can help here.
2. Languages that simplify the problem domain.
A code generator is really like a compiler. Its output is something you
don't necessarily want to read. It does a lot of work for you and you hope
that it is doing things correctly. I can't remember the last time I had to
look at bytecode to debug a problem. I have had to look at the Java
libraries a few times, but most of the time I stay above and trust that
things are being done correctly. Generated code is the same thing. I don't
care what the JSP, AOP, GWT, etc got compiled to.
These code generators could be what we think of compilers today. The
alternative is to push this logic down into a language but all you have done
is made it simpler to write more code. Whether it is expressed as Java or
yet more bytecode, it feels like the same logic which has to be created in
order to keep me at a high enough abstraction layer so I can get work done.
I would venture to say that out industry has been doing this since the
beginning. We now have hardware that can encode and decode MP3 data. We have
GPU's for handling graphics data and rendering pipelines. Everything gets
pushed down a level once the method is well known and standardized. I think
we are way past having to rely on 'magic' since my line above shows 6 steps
before what you wrote hits the CPU. We'll probably see a few more layers
added before we retire.
Robert
On Fri, Jun 4, 2010 at 9:36 PM, Casper Bang <[email protected]> wrote:
> Yeah but I was talking more about discrete generators at various steps
> in the tool-chain and at runtime, not just a compiler.
>
> On Jun 4, 10:42 pm, Kevin Wright <[email protected]> wrote:
> > Java --(javac)--> ByteCode --(hotspot)--> Native
> >
> > Byte"Code" is not a misnomer, code generation has been common for years
> >
> > Yes, it's common, and it's mainstream
> >
> > On 4 June 2010 21:34, Casper Bang <[email protected]> wrote:
> >
> >
> >
> >
> >
> > > Of course we've always had code generation and scaffolding tools, but
> > > I get the feeling that it's gaining popularly and breaking into the
> > > mainstream (i.e. not just Groovy, Rails etc.).
> >
> > > GWT uses generation to the extreme for obvious reasons, Lombok uses
> > > generation to make up for stale language evolution, Spring has always
> > > been into low-level AOP kind of things, but their latest Roo framework
> > > seems to embrace generation even further.
> >
> > > So is this a general tendency all around, code generation becoming
> > > mainstream? I've traditionally feared the day I can't do full round-
> > > trip engineering in plain view but depend on magic generators and
> > > IDE's (perhaps due to experiences with JDeveloper and the ADF
> > > framework). Is this a good thing or a symptom of inferior languages
> > > and lack of expressibility?
> >
> > > --
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> > --
> > Kevin Wright
> >
> > mail/google talk: [email protected]
> > wave: [email protected]
> > skype: kev.lee.wright
> > twitter: @thecoda
>
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