Re: Loading int.class onto the stack

Afaik, primitives do not have true Class objects and int.class/Integer.TYPE
are just a thin facade to unify the type system.  I wouldn't be surprised
that they won't fit into the constant pool as Classes.  Before Java 1.5,
even constructs like String.class weren't supported by LDC, they generated a
block of code that cached Class.forName().

On Wed, Feb 2, 2011 at 12:15 PM, Arshan Dabirsiaghi <
[email protected]> wrote:

> Sorry in advance for what is probably a stupid question.
>
> How do I load the int.class primitive Class representation (as opposed to
> Integer.class) via an ldc instruction? I've tried the following:
>
> visitLdcInsn( Type.getType(int.class) );
> visitLdcInsn( Type.INT_TYPE );
> visitLdcInsn( Type.getType("I") );
>
> These either cause NoClassDefFoundErrors or generate the wrong type (they
> generate Integer.class instead of int.class).
>
> The compiler generates GETSTATIC instructions to fetch the int.class
> indirectly from Integer.TYPE, like for the code show:
>
> Class[] classes = new Class[]{int.class};
>
> Emulating this isn't currently causing us any direct issues, but I don't
> know if it's a good idea or performant when compared to a direct reference
> to int.class.
>
> Thanks,
> Arshan
>
>
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