private static void EmiFieldOrPropertyCopyIL(ILGenerator generator, MethodInfo deepCopyMethod, FieldOrPropertyInfo member)
{
Debug.Assert(member.MemberInfo is FieldInfo || member.MemberInfo is PropertyInfo, "Field or property expected");
if (member.ValueType.IsValueType || member.IsDefined(typeof(ShallowCopyAttribute), false))
{
// shallow copy - copy value by simple assignment
generator.Emit(OpCodes.Ldarg_1);
generator.Emit(OpCodes.Ldarg_0);
if (member.MemberInfo is FieldInfo)
{
var field = (FieldInfo)member.MemberInfo;
generator.Emit(OpCodes.Ldfld, field);
generator.Emit(OpCodes.Stfld, field);
}
else
{
var property = (PropertyInfo)member.MemberInfo;
generator.Emit(OpCodes.Call, property.GetGetMethod());
generator.Emit(OpCodes.Call, property.GetSetMethod());
}
}
else
{
// deep copy - call special method for obtaining a deep copy
generator.Emit(OpCodes.Ldarg_1);
generator.Emit(OpCodes.Ldarg_0);
if (member.MemberInfo is FieldInfo)
generator.Emit(OpCodes.Ldfld, (FieldInfo)member.MemberInfo);
else
generator.Emit(OpCodes.Call, ((PropertyInfo)member.MemberInfo).GetGetMethod());
generator.Emit(OpCodes.Call, deepCopyMethod);
if (member.MemberInfo is FieldInfo)
generator.Emit(OpCodes.Stfld, (FieldInfo)member.MemberInfo);
else
generator.Emit(OpCodes.Call, ((PropertyInfo)member.MemberInfo).GetSetMethod());
}
}
private static Type GetLimitationAttribute(FieldOrPropertyInfo member, Type limitationAttribute)
{
var limitationSwitchAttribute = (LimitationSwitchAttribute)Attribute.GetCustomAttribute(member.MemberInfo, typeof(LimitationSwitchAttribute));
if (limitationSwitchAttribute != null && limitationSwitchAttribute.From == limitationAttribute)
return limitationSwitchAttribute.To;
return limitationAttribute;
}
private static IEnumerable<Attribute> GetAttributes(FieldOrPropertyInfo member)
{
if (GetPropertyAttributes != null)
foreach (var attr in GetPropertyAttributes(member)) yield return attr;
yield return new CategoryAttribute(member.DeclaringType.Name);
foreach (var attr in member.GetCustomAttributes(false).Cast<Attribute>()) yield return attr;
}
public static string GetSerializedName(FieldOrPropertyInfo member)
{
var serializedNameAttribute = (SerializedNameAttribute)Attribute.GetCustomAttribute(member.MemberInfo, typeof(SerializedNameAttribute));
var name = new StringBuilder(serializedNameAttribute != null ? serializedNameAttribute.SerializedName : member.Name);
if (name[0] == '_') name.Remove(0, 1);
name[0] = char.ToLower(name[0]);
return name.ToString();
}
public GobPropertyDescriptor(FieldOrPropertyInfo field)
: base(BeautifyFieldName(field.Name), GetAttributes(field).ToArray())
{
_member = field;
}
