/// <summary>
/// Create a LF which simply reinvokes a target of the given basic type. </summary>
internal static LambdaForm MakeReinvokerForm(MethodHandle target, int whichCache, Object constraint, String debugString, bool forceInline, NamedFunction getTargetFn, NamedFunction preActionFn)
{
MethodType mtype = target.Type().BasicType();
bool customized = (whichCache <0 || mtype.ParameterSlotCount()> MethodType.MAX_MH_INVOKER_ARITY);
bool hasPreAction = (preActionFn != null);
LambdaForm form;
if (!customized)
{
form = mtype.Form().CachedLambdaForm(whichCache);
if (form != null)
{
return(form);
}
}
const int THIS_DMH = 0;
const int ARG_BASE = 1;
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final int ARG_LIMIT = ARG_BASE + mtype.parameterCount();
int ARG_LIMIT = ARG_BASE + mtype.ParameterCount();
int nameCursor = ARG_LIMIT;
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final int PRE_ACTION = hasPreAction ? nameCursor++ : -1;
int PRE_ACTION = hasPreAction ? nameCursor++: -1;
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final int NEXT_MH = customized ? -1 : nameCursor++;
int NEXT_MH = customized ? -1 : nameCursor++;
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final int REINVOKE = nameCursor++;
int REINVOKE = nameCursor++;
LambdaForm.Name[] names = LambdaForm.Arguments(nameCursor - ARG_LIMIT, mtype.InvokerType());
assert(names.Length == nameCursor);
names[THIS_DMH] = names[THIS_DMH].WithConstraint(constraint);
Object[] targetArgs;
if (hasPreAction)
{
names[PRE_ACTION] = new LambdaForm.Name(preActionFn, names[THIS_DMH]);
}
if (customized)
{
targetArgs = Arrays.CopyOfRange(names, ARG_BASE, ARG_LIMIT, typeof(Object[]));
names[REINVOKE] = new LambdaForm.Name(target, targetArgs); // the invoker is the target itself
}
else
{
names[NEXT_MH] = new LambdaForm.Name(getTargetFn, names[THIS_DMH]);
targetArgs = Arrays.CopyOfRange(names, THIS_DMH, ARG_LIMIT, typeof(Object[]));
targetArgs[0] = names[NEXT_MH]; // overwrite this MH with next MH
names[REINVOKE] = new LambdaForm.Name(mtype, targetArgs);
}
form = new LambdaForm(debugString, ARG_LIMIT, names, forceInline);
if (!customized)
{
form = mtype.Form().SetCachedLambdaForm(whichCache, form);
}
return(form);
}
// hooked up via map.xml (as a replacement for makePairwiseConvertByEditor)
public static MethodHandle makePairwiseConvert(MethodHandle target, MethodType srcType, bool strict, bool monobox)
{
#if FIRST_PASS
return(null);
#else
object[] convSpecs = MethodHandleImpl.computeValueConversions(srcType, target.type(), strict, monobox);
List <LambdaForm.Name> names = new List <LambdaForm.Name>();
names.Add(new LambdaForm.Name(0, LambdaForm.BasicType.L_TYPE));
for (int i = 0; i < srcType.parameterCount(); i++)
{
names.Add(new LambdaForm.Name(i + 1, LambdaForm.BasicType.basicType(srcType.parameterType(i))));
}
LambdaForm.Name[] invokeArgs = new LambdaForm.Name[srcType.parameterCount()];
for (int i = 0; i < invokeArgs.Length; i++)
{
object convSpec = convSpecs[i];
if (convSpec == null)
{
invokeArgs[i] = names[i + 1];
}
else
{
LambdaForm.Name temp = new LambdaForm.Name(convSpec as MethodHandle ?? MethodHandleImpl.Lazy.MH_castReference.bindTo(convSpec), names[i + 1]);
names.Add(temp);
invokeArgs[i] = temp;
}
}
names.Add(new LambdaForm.Name(target, invokeArgs));
if (convSpecs[convSpecs.Length - 1] != null)
{
object convSpec = convSpecs[convSpecs.Length - 1];
if (convSpec != java.lang.Void.TYPE)
{
names.Add(new LambdaForm.Name(convSpec as MethodHandle ?? MethodHandleImpl.Lazy.MH_castReference.bindTo(convSpec), names[names.Count - 1]));
}
}
if (target.type().returnType() == java.lang.Void.TYPE && srcType.returnType() != java.lang.Void.TYPE)
{
names.Add(new LambdaForm.Name(LambdaForm.constantZero(LambdaForm.BasicType.basicType(srcType.returnType()))));
}
LambdaForm form = new LambdaForm("PairwiseConvert", srcType.parameterCount() + 1, names.ToArray());
return(new LightWeightMethodHandle(srcType, form));
#endif
}
