I have an intuition that this should be possible because the ccall depends
on the input types, but I can't figure out how to make it work. I've tried
a few things and they all seem to result in an UndefVarError or
UndefRefError.
I want to turn this:
for (x, y, z) in [ (:jboolean, :(jnifunc.CallBooleanMethodA), :(jnifunc.
CallStaticBooleanMethodA)),
(:jchar, :(jnifunc.CallCharMethodA), :(jnifunc.
CallStaticCharMethodA)),
(:jbyte, :(jnifunc.CallByteMethodA), :(jnifunc.
CallStaticByteMethodA)),
(:jshort, :(jnifunc.CallShortMethodA), :(jnifunc.
CallStaticShortMethodA)),
(:jint, :(jnifunc.CallIntMethodA), :(jnifunc.
CallStaticIntMethodA)),
(:jlong, :(jnifunc.CallLongMethodA), :(jnifunc.
CallStaticLongMethodA)),
(:jfloat, :(jnifunc.CallFloatMethodA), :(jnifunc.
CallStaticFloatMethodA)),
(:jdouble, :(jnifunc.CallDoubleMethodA), :(jnifunc.
CallStaticDoubleMethodA)),
(:Void, :(jnifunc.CallVoidMethodA), :(jnifunc.
CallStaticVoidMethodA)) ]
m = quote
function _jcall(obj, jmethodId::Ptr{Void}, callmethod::Ptr{Void},
rettype::Type{$(x)}, argtypes::Tuple, args... )
if callmethod == C_NULL #!
callmethod = ifelse( typeof(obj)<:JavaObject, $y , $z )
end
@assert callmethod != C_NULL
@assert jmethodId != C_NULL
if(isnull(obj)); error("Attempt to call method on Java NULL");
end
savedArgs, convertedArgs = convert_args(argtypes, args...)
result = ccall(callmethod, $x , (Ptr{JNIEnv}, Ptr{Void}, Ptr{
Void}, Ptr{Void}), penv, obj.ptr, jmethodId, convertedArgs)
if result==C_NULL; geterror(); end
if result == nothing; return; end
return convert_result(rettype, result)
end
end
eval(m)
end
Into something that works on 0.5. Code located here:
https://github.com/invenia/JavaCall.jl/blob/compat-0.5/src/core.jl#L196
I've learned tricks to deal with the 0.4 function eval pattern, but they
don't seem to work with ccall, which is a special feature that requires
some arguments to be static and known at compile time.
Anyone have any tips?
Thanks,
Eric
