private object PerThreadJavaCoder(int index)
{
var elem = perThreadJavaCodersMap.get(this);
if (elem == null)
{
var elemNew = new java.util.concurrent.atomic.AtomicReferenceArray(2);
elem = perThreadJavaCodersMap.putIfAbsent(this, elemNew) ?? elemNew;
}
var coders = (java.util.concurrent.atomic.AtomicReferenceArray)elem;
elem = coders.get(index);
if (elem == null)
{
var elemNew = (index == 0)
? (object)JavaCharset.newDecoder()
.onUnmappableCharacter(java.nio.charset.CodingErrorAction.REPLACE)
.onMalformedInput(java.nio.charset.CodingErrorAction.REPLACE)
: (object)JavaCharset.newEncoder()
.onUnmappableCharacter(java.nio.charset.CodingErrorAction.REPLACE)
.onMalformedInput(java.nio.charset.CodingErrorAction.REPLACE);
elem = coders.getAndSet(index, elemNew) ?? elemNew;
}
return(elem);
}
//
//
//
public static object TryCast(object parentObject, System.Type castToType,
java.util.concurrent.atomic.AtomicReferenceArray proxyArray,
int proxyIndex, java.lang.Class proxyClass,
System.Type proxyType)
{
// helper method for IGenericObject.TryCast methods, which are created
// by CilInterfaceBuilder.BuildTryCastMethod. invoked by TryCast() of
// a class that implements one or more generic interfaces, and has an
// array of proxy objects for those interfaces.
//
// castToType is the generic type passed to IGenericObject.TryCast.
// proxyType is the type of the generic interface which corresponds
// to the proxy object at index proxyIndex of the array proxyArray.
//
// if the types match, then the proxy object is created (if necessary),
// cached in the proxy array for future calls, and returned.
// if the types do not match, returns null.
if (!object.ReferenceEquals(castToType, proxyType))
{
// a type implementing IA<T1> may be assigned to IA<T2>,
// depending on variance of generic parameters.
// note that this is checked by IsAssignableGenericInterface,
// which does not rely on the java Signature attribute.
if (!(proxyType is RuntimeType proxyRuntimeType &&
proxyRuntimeType.IsCastableToGenericInterface(castToType,
(parentObject is system.Array.ProxySyncRoot parentArray))))
{
return(null);
}
}
var proxyObject = proxyArray.get(proxyIndex);
if (proxyObject == null)
{
var constructor = proxyClass.getDeclaredConstructor(
new java.lang.Class[] { (java.lang.Class) typeof(java.lang.Object) });
proxyObject = constructor.newInstance(new object[1] {
parentObject
});
if (!proxyArray.compareAndSet(proxyIndex, null, proxyObject))
{
proxyObject = proxyArray.get(proxyIndex);
}
}
return(proxyObject);
}
