On 01/20/2011 05:49 PM, Jochen Theodorou wrote:
Hi all,
looks like some stupid fact left my center of attention for quite a
while, so I am asking here to see if I am right or not.
Assuming I have in pseudo code something like this:
Object o1 = foo1()
Object o2 = foo2()
invokeDynamic ("bar", this, o1, o2)
in fact, invokedynamic "bar" (this, o1, o2)
"bar" is constant so it's a boostrap argument not an argument that will
be send each time there is a call.
meaning I want to do an dynamic method invocation using o1 and o2 as
arguments to some method on this, which is called bar....
Do I see it right, that the MethodType that will get presented to my
bootstrap method and the call site will have Object for o1 and o2?
the descriptor will be typeOf(this), typeOf(o1), typeOf(o2) + return type
And am I right in assuming, that if the runtime type for ox changes,
that this will not invalidate my callsite and that I will have to
guard this if I want that?
yes, you have to guard it. Unlike the DLR, invokedynamic doesn't do
anything by default.
Note that you can install a guard that checks the class of the first
parameter instead of testing its identity.
bye blackdrag
Rémi
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