source: OniSplit/Metadata/MetaEnum.cs@ 1170

Last change on this file since 1170 was 1114, checked in by iritscen, 5 years ago

Adding OniSplit source code (v0.9.99.0). Many thanks to Neo for all his work over the years.
File size: 5.2 KB
Line 
1using System;
2using System.Xml;
3
4namespace Oni.Metadata
5{
6 internal class MetaEnum : MetaType
7 {
8 private MetaType baseType;
9 private Type enumType;
10
11 public MetaEnum(MetaType baseType, Type enumType) : base("Enum", baseType.Size)
12 {
13 if (baseType != MetaType.Byte
14 && baseType != MetaType.Int16
15 && baseType != MetaType.UInt16
16 && baseType != MetaType.Int32
17 && baseType != MetaType.UInt32
18 && baseType != MetaType.Int64
19 && baseType != MetaType.UInt64)
20 {
21 throw new ArgumentException("Invalid enum base type", "baseType");
22 }
23
24 this.baseType = baseType;
25 this.enumType = enumType;
26 }
27
28 public MetaType BaseType => baseType;
29
30 public Type EnumType => enumType;
31
32 public bool IsFlags => Utils.IsFlagsEnum(enumType);
33
34 protected override bool IsLeafImpl() => true;
35
36 public override void Accept(IMetaTypeVisitor visitor) => visitor.VisitEnum(this);
37
38 public void BinaryToXml(BinaryReader reader, XmlWriter writer)
39 {
40 object value;
41
42 if (baseType == MetaType.Byte)
43 value = System.Enum.ToObject(enumType, reader.ReadByte());
44 else if (baseType == MetaType.Int16)
45 value = System.Enum.ToObject(enumType, reader.ReadInt16());
46 else if (baseType == MetaType.UInt16)
47 value = System.Enum.ToObject(enumType, reader.ReadUInt16());
48 else if (baseType == MetaType.Int32)
49 value = System.Enum.ToObject(enumType, reader.ReadInt32());
50 else if (baseType == MetaType.UInt32)
51 value = System.Enum.ToObject(enumType, reader.ReadUInt32());
52 else if (baseType == MetaType.Int64)
53 value = System.Enum.ToObject(enumType, reader.ReadInt64());
54 else
55 value = System.Enum.ToObject(enumType, reader.ReadUInt64());
56
57 string text = value.ToString().Replace(",", string.Empty);
58
59 if (text == "None" && IsFlags)
60 text = string.Empty;
61
62 writer.WriteValue(text);
63 }
64
65 public void XmlToBinary(XmlReader reader, BinaryWriter writer)
66 {
67 string text = reader.ReadElementContentAsString();
68
69 if (string.IsNullOrEmpty(text) && IsFlags)
70 {
71 if (baseType == MetaType.Byte)
72 writer.WriteByte(0);
73 else if (baseType == MetaType.Int16 || baseType == MetaType.UInt16)
74 writer.WriteUInt16(0);
75 else if (baseType == MetaType.Int32 || baseType == MetaType.UInt32)
76 writer.Write(0);
77 else
78 writer.Write(0L);
79
80 return;
81 }
82
83 object value = null;
84
85 try
86 {
87 value = System.Enum.Parse(enumType, text.Trim().Replace(' ', ','));
88 }
89 catch
90 {
91 }
92
93 if (value == null)
94 throw new FormatException(string.Format("{0} is not a valid value name. Run onisplit -help enums to see a list of possible names.", text));
95
96 if (baseType == MetaType.Byte)
97 writer.WriteByte(Convert.ToByte(value));
98 else if (baseType == MetaType.Int16)
99 writer.Write(Convert.ToInt16(value));
100 else if (baseType == MetaType.UInt16)
101 writer.Write(Convert.ToUInt16(value));
102 else if (baseType == MetaType.Int32)
103 writer.Write(Convert.ToInt32(value));
104 else if (baseType == MetaType.UInt32)
105 writer.Write(Convert.ToUInt32(value));
106 else if (baseType == MetaType.Int64)
107 writer.Write(Convert.ToInt64(value));
108 else
109 writer.Write(Convert.ToUInt64(value));
110 }
111
112 public static T Parse<T>(string text) where T : struct
113 {
114 object value = null;
115
116 if (string.IsNullOrEmpty(text) && Utils.IsFlagsEnum(typeof(T)))
117 {
118 value = System.Enum.Parse(typeof(T), "None");
119 }
120 else
121 {
122 try
123 {
124 string[] values = text.Split(new char[0], StringSplitOptions.RemoveEmptyEntries);
125 text = string.Join(", ", values);
126 value = System.Enum.Parse(typeof(T), text, true);
127 }
128 catch
129 {
130 }
131 }
132
133 if (value == null)
134 throw new FormatException(string.Format("{0} is not a valid value name. Run onisplit -help enums to see a list of possible names.", text));
135
136 return (T)value;
137 }
138
139 public static string ToString<T>(T value) where T : struct
140 {
141 string text = value.ToString().Replace(",", string.Empty);
142
143 if (text == "None" && Utils.IsFlagsEnum(typeof(T)))
144 text = string.Empty;
145
146 return text;
147 }
148 }
149}
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