private InternalLambdaDescription CompileInterfaceConversion(RedwoodType type)
{
int closureId = This.ClosureID;
int[] slots = RuntimeUtil.GetSlotMapsToInterface(Type, type);
List <Instruction> instructions = new List <Instruction>();
for (int i = 0; i < slots.Length; i++)
{
// Get the member on our class
instructions.Add(new LookupClosureInstruction(closureId, slots[i]));
// Assign it as an argument for the closure
instructions.Add(new AssignLocalInstruction(i));
}
if (type.CSharpType != null)
{
instructions.Add(
new BuildArrayInstruction(
Enumerable
.Range(0, slots.Length)
.ToArray(),
typeof(object)
)
);
// Save it right past the arguments for the creation of
// the array
instructions.Add(new AssignLocalInstruction(slots.Length));
}
instructions.Add(new LoadConstantInstruction(type));
instructions.Add(new LookupExternalMemberLambdaInstruction(
"Constructor",
RedwoodType.GetForCSharpType(typeof(RedwoodType))
));
if (type.CSharpType == null)
{
// We already arranged all of the arguments in order
instructions.Add(
new InternalCallInstruction(
Enumerable
.Range(0, slots.Length)
.ToArray()
)
);
}
else
{
instructions.Add(
new ExternalCallInstruction(
new int[] { slots.Length }
)
);
}
instructions.Add(new ReturnInstruction());
return(new InternalLambdaDescription
{
argTypes = new RedwoodType[0],
closureSize = 0,
stackSize = slots.Length + 1,
returnType = type,
instructions = instructions.ToArray()
});
}