public override void Emit(IMemberEmitter member, ILGenerator gen)
{
if (reference != null)
{
ArgumentsUtil.EmitLoadOwnerAndReference(reference, gen);
}
else if (expression != null)
{
expression.Emit(member, gen);
}
else
{
if (member.ReturnType != typeof(void))
{
OpCodeUtil.EmitLoadOpCodeForDefaultValueOfType(gen, member.ReturnType);
}
}
gen.Emit(OpCodes.Ret);
}
public override void Emit(IMemberEmitter member, ILGenerator gen)
{
if (reference != null)
{
ArgumentsUtil.EmitLoadOwnerAndReference(reference, gen);
}
else if (expression != null)
{
expression.Emit(member, gen);
}
var notNull = gen.DefineLabel();
gen.Emit(OpCodes.Brtrue_S, notNull);
ifNull.Emit(member, gen);
gen.MarkLabel(notNull);
if (ifNotNull != null) // yeah, I know that reads funny :)
{
ifNotNull.Emit(member, gen);
}
}
public override void Emit(IMemberEmitter member, ILGenerator gen)
{
ArgumentsUtil.EmitLoadOwnerAndReference(target.OwnerReference, gen);
expression.Emit(member, gen);
target.StoreReference(gen);
}
public override void Emit(IMemberEmitter member, ILGenerator gen)
{
right.Emit(member, gen);
if (fromType == target)
{
return;
}
if (fromType.IsByRef)
{
fromType = fromType.GetElementType();
}
if (target.IsByRef)
{
target = target.GetElementType();
}
if (target.IsPointer && fromType == typeof(object))
{
gen.Emit(OpCodes.Unbox_Any, typeof(IntPtr));
gen.Emit(OpCodes.Call, ArgumentsUtil.PointerFromIntPtr());
}
else if (target == typeof(object) && fromType.IsPointer)
{
gen.Emit(OpCodes.Call, ArgumentsUtil.IntPtrFromPointer());
gen.Emit(OpCodes.Box, typeof(IntPtr));
}
else if (target.IsValueType)
{
if (fromType.IsValueType)
{
throw new NotImplementedException("Cannot convert between distinct value types");
}
else
{
// Unbox conversion
// Assumes fromType is a boxed value
// if we can, we emit a box and ldind, otherwise, we will use unbox.any
if (LdindOpCodesDictionary.Instance[target] != LdindOpCodesDictionary.EmptyOpCode)
{
gen.Emit(OpCodes.Unbox, target);
OpCodeUtil.EmitLoadIndirectOpCodeForType(gen, target);
}
else
{
gen.Emit(OpCodes.Unbox_Any, target);
}
}
}
else
{
if (fromType.IsValueType)
{
// Box conversion
gen.Emit(OpCodes.Box, fromType);
EmitCastIfNeeded(typeof(object), target, gen);
}
else
{
// Possible down-cast
EmitCastIfNeeded(fromType, target, gen);
}
}
}
public override void Emit(IMemberEmitter member, ILGenerator gen)
{
// TODO: Should it discard any possible return value with a pop?
expression.Emit(member, gen);
}