public override void PreDefine(ITypeDesigner t)
{
if (_fnGet != null)
{
var mtGet = _info.GetGetMethod();
if (mtGet == null)
{
throw new Exception("Can't override non-existent get method on property " + _info.Name);
}
t.OverrideMethod(mtGet).Emit(_fnGet);
}
if (_fnSet != null)
{
var mtSet = _info.GetSetMethod();
if (mtSet == null)
{
throw new Exception("Can't override non-existent set method on property " + _info.Name);
}
t.OverrideMethod(mtSet).Emit(_fnSet);
}
}
public static void ObjectChanged(ITypeDesigner typeDesigner)
{
if (_init)
return;
foreach (IEDMDesignerChangeWatcherObserver observer in _observers)
{
if (observer.ObjectChanged(typeDesigner))
break;
}
}
public override void PreDefine(ITypeDesigner t)
{
if (_backingField != null)
{
_fnGet = (il) => {
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldfld, _backingField);
il.Emit(OpCodes.Ret);
};
_fnSet = (il) => {
if (_fnOnChanged != null)
{
var lbSkipOnChanged = il.DefineLabel();
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldfld, _backingField);
if (_type.IsValueType)
{
il.Emit(OpCodes.Box, _type);
}
il.Emit(OpCodes.Ldarg_1);
if (_type.IsValueType)
{
il.Emit(OpCodes.Box, _type);
}
il.Emit(OpCodes.Call, typeof(object).GetMethod("Equals", BindingFlags.Public | BindingFlags.Static));
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Stfld, _backingField);
il.Emit(OpCodes.Brtrue, lbSkipOnChanged);
_fnOnChanged(il);
il.MarkLabel(lbSkipOnChanged);
il.Emit(OpCodes.Ret);
}
else
{
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Stfld, _backingField);
il.Emit(OpCodes.Ret);
}
};
}
}
public static void ObjectChanged(ITypeDesigner typeDesigner)
{
if (_init)
{
return;
}
foreach (IEDMDesignerChangeWatcherObserver observer in _observers)
{
if (observer.ObjectChanged(typeDesigner))
{
break;
}
}
}
public override void PreDefine(ITypeDesigner t)
{
if (_handlerType == null)
{
_handlerType = _eventArgsType == typeof(EventArgs)
? typeof(EventHandler)
: typeof(EventHandler <>).MakeGenericType(_eventArgsType);
}
if (_bPrivateField)
{
_field = t.Field("_" + _name, _handlerType);
_fnAdd = (il) => {
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldfld, _field);
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Call, typeof(Delegate).GetMethod("Combine", new[] { typeof(Delegate), typeof(Delegate) }, null));
il.Emit(OpCodes.Castclass, _handlerType);
il.Emit(OpCodes.Stfld, _field);
il.Emit(OpCodes.Ret);
};
_fnRemove = (il) => {
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldfld, _field);
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Call, typeof(Delegate).GetMethod("Remove", new[] { typeof(Delegate), typeof(Delegate) }, null));
il.Emit(OpCodes.Castclass, _handlerType);
il.Emit(OpCodes.Stfld, _field);
il.Emit(OpCodes.Ret);
};
}
}
public override void PreDefine(ITypeDesigner t)
{
//...
}
public abstract void PreDefine(ITypeDesigner t);
