void CreateSaverIl(IILGen ilGen, IEnumerable <TableFieldInfo> fields,
Action <IILGen> pushInstance, Action <IILGen> pushRelationIface,
Action <IILGen> pushWriter, Action <IILGen> pushTransaction)
{
var anyNeedsCtx = fields.Any(tfi => tfi.Handler.NeedsCtx());
IILLocal writerCtxLocal = null;
if (anyNeedsCtx)
{
writerCtxLocal = ilGen.DeclareLocal(typeof(IWriterCtx));
ilGen
.Do(pushTransaction)
.Do(pushWriter)
.Newobj(() => new DBWriterCtx(null, null))
.Stloc(writerCtxLocal);
}
var props = ClientType.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
foreach (var field in fields)
{
var getter = props.First(p => GetPersistentName(p) == field.Name).GetGetMethod(true);
Action <IILGen> writerOrCtx;
var handler = field.Handler.SpecializeSaveForType(getter.ReturnType);
if (handler.NeedsCtx())
{
writerOrCtx = il => il.Ldloc(writerCtxLocal);
}
else
{
writerOrCtx = pushWriter;
}
MethodInfo apartFieldGetter = null;
if (pushRelationIface != null)
{
ApartFields.TryGetValue(field.Name, out apartFieldGetter);
}
handler.Save(ilGen, writerOrCtx, il =>
{
if (apartFieldGetter != null)
{
il.Do(pushRelationIface);
getter = apartFieldGetter;
}
else
{
il.Do(pushInstance);
}
il.Callvirt(getter);
_relationInfoResolver.TypeConvertorGenerator.GenerateConversion(getter.ReturnType,
handler.HandledType())(il);
});
}
}
Action <IInternalObjectDBTransaction, AbstractBufferedWriter, object, object> CreateSaverWithApartFields(
IEnumerable <TableFieldInfo> fields, string saverName)
{
var method = ILBuilder.Instance.NewMethod <
Action <IInternalObjectDBTransaction, AbstractBufferedWriter, object, object> >(saverName);
var ilGenerator = method.Generator;
ilGenerator.DeclareLocal(ClientType);
StoreNthArgumentOfTypeIntoLoc(ilGenerator, 2, ClientType, 0);
var hasApartFields = ApartFields.Any();
if (hasApartFields)
{
ilGenerator.DeclareLocal(_interfaceType);
StoreNthArgumentOfTypeIntoLoc(ilGenerator, 3, _interfaceType, 1);
}
CreateSaverIl(ilGenerator, fields,
il => il.Ldloc(0), hasApartFields ? il => il.Ldloc(1) : (Action <IILGen>)null,
il => il.Ldarg(1), il => il.Ldarg(0));
ilGenerator
.Ret();
return(method.Create());
}