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using System; |
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using System.Xml; |
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|
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namespace Oni.Metadata |
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{ |
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internal class MetaEnum : MetaType |
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{ |
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private MetaType baseType; |
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private Type enumType; |
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|
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public MetaEnum(MetaType baseType, Type enumType) : base("Enum", baseType.Size) |
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{ |
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if (baseType != MetaType.Byte |
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&& baseType != MetaType.Int16 |
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&& baseType != MetaType.UInt16 |
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&& baseType != MetaType.Int32 |
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&& baseType != MetaType.UInt32 |
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&& baseType != MetaType.Int64 |
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&& baseType != MetaType.UInt64) |
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{ |
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throw new ArgumentException("Invalid enum base type", "baseType"); |
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} |
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|
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this.baseType = baseType; |
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this.enumType = enumType; |
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} |
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|
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public MetaType BaseType => baseType; |
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|
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public Type EnumType => enumType; |
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|
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public bool IsFlags => Utils.IsFlagsEnum(enumType); |
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|
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protected override bool IsLeafImpl() => true; |
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|
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public override void Accept(IMetaTypeVisitor visitor) => visitor.VisitEnum(this); |
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|
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public void BinaryToXml(BinaryReader reader, XmlWriter writer) |
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{ |
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object value; |
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|
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if (baseType == MetaType.Byte) |
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value = System.Enum.ToObject(enumType, reader.ReadByte()); |
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else if (baseType == MetaType.Int16) |
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value = System.Enum.ToObject(enumType, reader.ReadInt16()); |
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else if (baseType == MetaType.UInt16) |
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value = System.Enum.ToObject(enumType, reader.ReadUInt16()); |
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else if (baseType == MetaType.Int32) |
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value = System.Enum.ToObject(enumType, reader.ReadInt32()); |
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else if (baseType == MetaType.UInt32) |
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value = System.Enum.ToObject(enumType, reader.ReadUInt32()); |
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else if (baseType == MetaType.Int64) |
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value = System.Enum.ToObject(enumType, reader.ReadInt64()); |
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else |
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value = System.Enum.ToObject(enumType, reader.ReadUInt64()); |
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|
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string text = value.ToString().Replace(",", string.Empty); |
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|
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if (text == "None" && IsFlags) |
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text = string.Empty; |
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|
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writer.WriteValue(text); |
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} |
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|
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public void XmlToBinary(XmlReader reader, BinaryWriter writer) |
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{ |
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string text = reader.ReadElementContentAsString(); |
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|
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if (string.IsNullOrEmpty(text) && IsFlags) |
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{ |
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if (baseType == MetaType.Byte) |
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writer.WriteByte(0); |
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else if (baseType == MetaType.Int16 || baseType == MetaType.UInt16) |
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writer.WriteUInt16(0); |
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else if (baseType == MetaType.Int32 || baseType == MetaType.UInt32) |
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writer.Write(0); |
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else |
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writer.Write(0L); |
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|
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return; |
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} |
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|
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object value = null; |
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|
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try |
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{ |
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value = System.Enum.Parse(enumType, text.Trim().Replace(' ', ',')); |
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} |
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catch |
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{ |
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} |
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|
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if (value == null) |
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throw new FormatException(string.Format("{0} is not a valid value name. Run onisplit -help enums to see a list of possible names.", text)); |
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|
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if (baseType == MetaType.Byte) |
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writer.WriteByte(Convert.ToByte(value)); |
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else if (baseType == MetaType.Int16) |
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writer.Write(Convert.ToInt16(value)); |
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else if (baseType == MetaType.UInt16) |
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writer.Write(Convert.ToUInt16(value)); |
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else if (baseType == MetaType.Int32) |
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writer.Write(Convert.ToInt32(value)); |
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else if (baseType == MetaType.UInt32) |
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writer.Write(Convert.ToUInt32(value)); |
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else if (baseType == MetaType.Int64) |
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writer.Write(Convert.ToInt64(value)); |
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else |
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writer.Write(Convert.ToUInt64(value)); |
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} |
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|
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public static T Parse<T>(string text) where T : struct |
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{ |
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object value = null; |
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|
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if (string.IsNullOrEmpty(text) && Utils.IsFlagsEnum(typeof(T))) |
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{ |
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value = System.Enum.Parse(typeof(T), "None"); |
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} |
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else |
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{ |
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try |
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{ |
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string[] values = text.Split(new char[0], StringSplitOptions.RemoveEmptyEntries); |
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text = string.Join(", ", values); |
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value = System.Enum.Parse(typeof(T), text, true); |
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} |
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catch |
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{ |
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} |
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} |
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|
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if (value == null) |
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throw new FormatException(string.Format("{0} is not a valid value name. Run onisplit -help enums to see a list of possible names.", text)); |
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|
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return (T)value; |
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} |
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|
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public static string ToString<T>(T value) where T : struct |
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{ |
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string text = value.ToString().Replace(",", string.Empty); |
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|
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if (text == "None" && Utils.IsFlagsEnum(typeof(T))) |
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text = string.Empty; |
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|
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return text; |
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} |
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} |
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} |
