Assembly.Metro.Controls.PageTemplates.Games.Components.MetaData.MetaReader.VisitTagRef C# (CSharp) Method

        public void VisitTagRef(TagRefData field)
        {
            SeekToOffset(field.Offset);

            TagClass tagClass = null;
            DatumIndex index;
            if (field.WithClass)
            {
                // Read the datum index based upon the layout
                StructureValueCollection values = StructureReader.ReadStructure(_reader, _tagRefLayout);
                index = new DatumIndex(values.GetInteger("datum index"));

                // Check the class, in case the datum index is null
                var magic = values.GetInteger("class magic");
                var str = CharConstant.ToString((int)magic);
                tagClass = field.Tags.Classes.FirstOrDefault(c => c.TagClassMagic == str);
            }
            else
            {
                // Just read the datum index at the current position
                index = DatumIndex.ReadFrom(_reader);
            }

            TagEntry tag = null;
            if (index.IsValid && index.Index < field.Tags.Entries.Count)
            {
                tag = field.Tags.Entries[index.Index];
                if (tag == null || tag.RawTag == null || tag.RawTag.Index != index)
                    tag = null;
            }

            if (tag != null)
            {
                field.Class = field.Tags.Classes.FirstOrDefault(c => c.RawClass == tag.RawTag.Class);
                field.Value = tag;
            }
            else
            {
                field.Class = tagClass;
                field.Value = null;
            }
        }