double and long use two registers.
> do you have problems with long and double type ?
>
>
> > Thanks,
> >
> > Would the following stack trace be related to these indexes? I'm
> > assuming that Registers are analogous to entries in the index? Whould
> > this be correct?
> >
> > java.lang.VerifyError: (class: foo/bar/NewTestBean, method: testMethod
> > signature: (DI)D) Register 2 contains wrong type
> > at java.lang.Class.getDeclaredConstructors0(Native Method)
> > at
> java.lang.Class.privateGetDeclaredConstructors(Class.java:1576)
> > at java.lang.Class.getConstructor0(Class.java:1748)
> > at java.lang.Class.newInstance0(Class.java:266)
> > at java.lang.Class.newInstance(Class.java:249)
> > at
> >
>
org.apache.commons.jelly.tags.bcel.BsfClassExtender.main(BsfClassExtender.ja
> va:194)
> > Exception in thread "main"
> >
> >
> > -Mark
> >
> > Bob Lee wrote:
> > > You are correct. I'm pretty sure the indexes work like this (I
> > > personally use Javassist):
> > >
> > > Static method:
> > > 0..n: arguments.
> > > n+1..m: local variables.
> > >
> > > Instance method:
> > > 0: this
> > > 1..n: arguments.
> > > n+1..m: local variables.
> > >
> > > "load" pushes the variable at that index on to the stack.
> > > "store" pops the top value off of the stack and stores it in the
> > > specified index.
> > >
> > > Thanks,
> > > Bob
> > >
> > > On Thursday, January 30, 2003, at 07:54 PM, Mark R. Diggory wrote:
> > >
> > >> Hi,
> > >>
> > >> I currently have this code fragment
> > >>
> > >> *
> > >> Integer xyz = new Integer(foo);
> > >> manager.declareBean("foo", xyz, xyz.getClass());
> > >> *
> > >>
> > >> Which I use BCELLifier on to get the following section of BCEL code:
> > >>
> > >> InstructionHandle ih_14 =
> > >> il.append(_factory.createNew("java.lang.Integer"));
> > >> il.append(InstructionConstants.DUP);
> > >> il.append(_factory.createLoad(Type.INT, 1));
> > >> il.append(_factory.createInvoke("java.lang.Integer",
> > >> "<init>",Type.VOID,new Type[] { Type.INT },
Constants.INVOKESPECIAL));
> > >> il.append(_factory.createStore(Type.OBJECT, 3));
> > >> InstructionHandle ih_23 = il.append(_factory.createLoad(Type.OBJECT,
> > >> 0));
> > >>
il.append(_factory.createFieldAccess("org.apache.commons.jelly.tags.bce
> > >> l.Test","manager",new ObjectType("com.ibm.bsf.BSFManager"),
> > >> Constants.GETFIELD));
> > >> il.append(new PUSH(_cp, "foo"));
> > >> il.append(_factory.createLoad(Type.OBJECT, 3));
> > >> il.append(_factory.createLoad(Type.OBJECT, 3));
> > >> il.append(_factory.createInvoke("java.lang.Object", "getClass", new
> > >> ObjectType("java.lang.Class"), Type.NO_ARGS, >
> Constants.INVOKEVIRTUAL));
> > >> il.append(_factory.createInvoke("com.ibm.bsf.BSFManager",
> > >> "declareBean",Type.VOID, new Type[] { Type.STRING, Type.OBJECT, new
> > >> ObjectType("java.lang.Class") }, Constants.INVOKEVIRTUAL));
> > >>
> > >>
> > >> Specifically, I'm struggling with some issues where I don't quite
> > >> understand what the indexes are for in situations like
> > >>
> > >> _factory.createStore(Type.OBJECT, 3)
> > >>
> > >> and
> > >>
> > >> _factory.createLoad(Type.OBJECT, 3)
> > >>
> > >> am I right in assuming that there are a set number of "indexes"
> > >> representing positions in the InstructionList and that these above
> > >> references represent the setting and getting of Object references in
> > >> that list?
> > >>
> > >> I'm struggling because I'm trying to make the code more "iterative"
> > >> where I might iterate over a "set" of handlers/append statements to
> > >> append repeatedly to the instruction list (as an Example):
> > >>
> > >> for(int i = 0; i < argNames.length ; ){
> > >>
> > >> InstructionHandle ih_14 =
il.append(_factory.createNew(argClasses[i]));
> > >> ...
> > >> il.append(_factory.createStore(Type.OBJECT, i));
> > >> ...
> > >> il.append(new PUSH(_cp, argName[i]));
> > >> il.append(_factory.createLoad(Type.OBJECT, i));
> > >> il.append(_factory.createLoad(Type.OBJECT, i));
> > >> ...
> > >>
> > >> }
> > >>
> > >> My problem is that I get actuall references that end up pointing to
> > >> only the first argument. I'm hoping I understand what the indexes are
> > >> for, but I'm hoping that you guy's can clarify this for me.
> > >>
> > >> Thanks,
> > >> -Mark Diggory
> > >>
> > >>
> > >>
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> > >>
> > >
> > >
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> >
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>
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