/**
* Generate customized bytecode for a given LambdaForm.
*/
public static MemberName generateCustomizedCode(LambdaForm form, MethodType invokerType)
{
try
{
MemberName memberName = new MemberName();
memberName._clazz(AnonymousClass.Instance);
memberName._name(form.debugName);
memberName._type(invokerType);
memberName._flags(MethodHandleNatives.Constants.MN_IS_METHOD | MethodHandleNatives.Constants.ACC_STATIC | (MethodHandleNatives.Constants.REF_invokeStatic << MethodHandleNatives.Constants.MN_REFERENCE_KIND_SHIFT));
memberName.vmtarget = new NativeInvokerBytecodeGenerator(form, invokerType).generateCustomizedCodeBytes();
return(memberName);
}
#if DEBUG
catch (BailoutException x)
{
Console.WriteLine(x.Message);
Console.WriteLine("generateCustomizedCode: " + form + ", " + invokerType);
}
#else
catch (BailoutException)
{
}
#endif
return(InvokerBytecodeGenerator.generateCustomizedCode(form, invokerType));
}
static Lazy()
{
try
{
NamedFunction[] nfs = new NamedFunction[] { NF_internalMemberName = new NamedFunction(typeof(DirectMethodHandle).getDeclaredMethod("internalMemberName", typeof(Object))), NF_internalMemberNameEnsureInit = new NamedFunction(typeof(DirectMethodHandle).getDeclaredMethod("internalMemberNameEnsureInit", typeof(Object))), NF_ensureInitialized = new NamedFunction(typeof(DirectMethodHandle).getDeclaredMethod("ensureInitialized", typeof(Object))), NF_fieldOffset = new NamedFunction(typeof(DirectMethodHandle).getDeclaredMethod("fieldOffset", typeof(Object))), NF_checkBase = new NamedFunction(typeof(DirectMethodHandle).getDeclaredMethod("checkBase", typeof(Object))), NF_staticBase = new NamedFunction(typeof(DirectMethodHandle).getDeclaredMethod("staticBase", typeof(Object))), NF_staticOffset = new NamedFunction(typeof(DirectMethodHandle).getDeclaredMethod("staticOffset", typeof(Object))), NF_checkCast = new NamedFunction(typeof(DirectMethodHandle).getDeclaredMethod("checkCast", typeof(Object), typeof(Object))), NF_allocateInstance = new NamedFunction(typeof(DirectMethodHandle).getDeclaredMethod("allocateInstance", typeof(Object))), NF_constructorMethod = new NamedFunction(typeof(DirectMethodHandle).getDeclaredMethod("constructorMethod", typeof(Object))) };
foreach (NamedFunction nf in nfs)
{
// Each nf must be statically invocable or we get tied up in our bootstraps.
assert(InvokerBytecodeGenerator.IsStaticallyInvocable(nf.member)) : nf;
nf.resolve();
}
}
catch (ReflectiveOperationException ex)
{
throw newInternalError(ex);
}
}
/**
* Generate an invoker method for the passed {@link LambdaForm}.
*/
private Delegate generateCustomizedCodeBytes()
{
// iterate over the form's names, generating bytecode instructions for each
// start iterating at the first name following the arguments
Name onStack = null;
for (int i = lambdaForm._arity(); i < lambdaForm.names.Length; i++)
{
Name name = lambdaForm.names[i];
emitStoreResult(onStack);
onStack = name; // unless otherwise modified below
MethodHandleImpl.Intrinsic intr = name.function.intrinsicName();
switch (intr.name())
{
case "SELECT_ALTERNATIVE":
//assert isSelectAlternative(i);
onStack = emitSelectAlternative(name, lambdaForm.names[i + 1]);
i++; // skip MH.invokeBasic of the selectAlternative result
continue;
case "GUARD_WITH_CATCH":
//assert isGuardWithCatch(i);
onStack = emitGuardWithCatch(i);
i = i + 2; // Jump to the end of GWC idiom
continue;
case "NEW_ARRAY":
Class rtype = name.function.methodType().returnType();
if (InvokerBytecodeGenerator.isStaticallyNameable(rtype))
{
emitNewArray(name);
continue;
}
break;
case "ARRAY_LOAD":
emitArrayLoad(name);
continue;
case "IDENTITY":
//assert(name.arguments.length == 1);
emitPushArguments(name);
continue;
case "NONE":
// no intrinsic associated
break;
// [IKVM] ARRAY_STORE and ZERO appear to be unused
default:
throw new BailoutException(Bailout.UnsupportedIntrinsic, "Unknown intrinsic: " + intr);
}
MemberName member = name.function._member();
if (isStaticallyInvocable(member))
{
emitStaticInvoke(member, name);
}
else
{
emitInvoke(name);
}
}
// return statement
emitReturn(onStack);
ilgen.DoEmit();
return(dm.CreateDelegate(delegateType, constants.ToArray()));
}
