public static Action <object, object> CreateFieldCloner(FieldInfo field)
{
if (field.ReflectedType.IsValueType)
{
return(new Action <object, object>((source, target) =>
{
var value = CreateFieldGetter(field)(source);
CreateFieldSetter(field)(target, value);
}));
}
else
{
var expSource = Expression.Parameter(typeof(object), "source");
var expTarget = Expression.Parameter(typeof(object), "target");
var expFieldLeft = Expression.Field(Expression.Convert(expTarget, field.ReflectedType), field);
var expFieldRight = Expression.Field(Expression.Convert(expSource, field.ReflectedType), field);
var main = Expression.Assign(expFieldLeft, expFieldRight);
return((Action <object, object>)Expression.Lambda(typeof(Action <object, object>), main, expSource, expTarget).Compile());
}
}
public static Action <object, object> CreateFieldCloner(FieldInfo field)
{
ParameterExpression expression;
ParameterExpression expression2;
Action <object, object> action2 = null;
if (field.ReflectedType.IsValueType)
{
if (action2 == null)
{
action2 = delegate(object source, object target) {
object obj2 = CreateFieldGetter(field)(source);
CreateFieldSetter(field)(target, obj2);
};
}
return(action2);
}
MemberExpression left = Expression.Field(Expression.Convert(expression2 = Expression.Parameter(typeof(object), "target"), field.ReflectedType), field);
MemberExpression right = Expression.Field(Expression.Convert(expression = Expression.Parameter(typeof(object), "source"), field.ReflectedType), field);
BinaryExpression body = Expression.Assign(left, right);
return((Action <object, object>)Expression.Lambda(typeof(Action <object, object>), body, new ParameterExpression[] { expression, expression2 }).Compile());
}