mcs/class/System.XML/System.Xml.Serialization/TypeData.cs

   1 //
   2 // System.Xml.Serialization.TypeData
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //  Lluis Sanchez Gual (lluis@ximian.com)
   7 //
   8 // (C) 2002 Ximian, Inc (http://www.ximian.com)
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33 using System.Collections;
  34 using System.Reflection;
  35
  36 namespace System.Xml.Serialization
  37 {
  38         internal class TypeData
  39         {
  40                 Type type;
  41                 string elementName;
  42                 SchemaTypes sType;
  43                 Type listItemType;
  44                 string typeName;
  45                 string fullTypeName;
  46                 TypeData listItemTypeData;
  47                 TypeData listTypeData;
  48                 bool hasPublicConstructor = true;
  49
  50                 public TypeData (Type type, string elementName, bool isPrimitive)
  51                 {
  52                         this.type = type;
  53                         this.typeName = type.Name;
  54                         this.fullTypeName = type.FullName.Replace ('+', '.');
  55
  56                         if (isPrimitive)
  57                                 sType = SchemaTypes.Primitive;
  58                         else
  59                         {
  60                                 if (type.IsEnum)
  61                                         sType = SchemaTypes.Enum;
  62                                 else if (typeof(IXmlSerializable).IsAssignableFrom (type))
  63                                         sType = SchemaTypes.XmlSerializable;
  64                                 else if (typeof (System.Xml.XmlNode).IsAssignableFrom (type))
  65                                         sType = SchemaTypes.XmlNode;
  66                                 else if (type.IsArray || typeof(IEnumerable).IsAssignableFrom (type))
  67                                         sType = SchemaTypes.Array;
  68                                 else
  69                                         sType = SchemaTypes.Class;
  70                         }
  71
  72                         if (IsListType)
  73                                 this.elementName = TypeTranslator.GetArrayName (ListItemTypeData.XmlType);
  74                         else
  75                                 this.elementName = elementName;
  76
  77                         if (sType == SchemaTypes.Array || sType == SchemaTypes.Class) {
  78                                 hasPublicConstructor = (type.IsArray || type.GetConstructor (Type.EmptyTypes) != null || type.IsAbstract || type.IsValueType);
  79                         }
  80                 }
  81
  82                 internal TypeData (string typeName, string fullTypeName, string xmlType, SchemaTypes schemaType, TypeData listItemTypeData)
  83                 {
  84                         this.elementName = xmlType;
  85                         this.typeName = typeName;
  86                         this.fullTypeName = fullTypeName.Replace ('+', '.');
  87                         this.listItemTypeData = listItemTypeData;
  88                         this.sType = schemaType;
  89                         this.hasPublicConstructor = true;
  90                 }
  91
  92                 public string TypeName
  93                 {
  94                         get {
  95                                 return typeName;
  96                         }
  97                 }
  98
  99                 public string XmlType
 100                 {
 101                         get {
 102                                 return elementName;
 103                         }
 104                 }
 105
 106                 public Type Type
 107                 {
 108                         get {
 109                                 return type;
 110                         }
 111                 }
 112
 113                 public string FullTypeName
 114                 {
 115                         get {
 116                                 return fullTypeName;
 117                         }
 118                 }
 119
 120                 public SchemaTypes SchemaType
 121                 {
 122                         get {
 123                                 return sType;
 124                         }
 125                 }
 126
 127                 public bool IsListType
 128                 {
 129                         get { return SchemaType == SchemaTypes.Array; }
 130                 }
 131
 132                 public bool IsComplexType
 133                 {
 134                         get
 135                         {
 136                                 return (SchemaType == SchemaTypes.Class ||
 137                                               SchemaType == SchemaTypes.Array ||
 138                                               SchemaType == SchemaTypes.Enum ||
 139                                               SchemaType == SchemaTypes.XmlNode ||
 140                                                   SchemaType == SchemaTypes.XmlSerializable );
 141                         }
 142                 }
 143
 144                 public bool IsValueType
 145                 {
 146                         get
 147                         {
 148                                 if (type != null) return type.IsValueType;
 149                                 else return (sType == SchemaTypes.Primitive || sType == SchemaTypes.Enum);
 150                         }
 151                 }
 152
 153                 public TypeData ListItemTypeData
 154                 {
 155                         get
 156                         {
 157                                 if (listItemTypeData == null && type != null)
 158                                         listItemTypeData = TypeTranslator.GetTypeData (ListItemType);
 159                                 return listItemTypeData;
 160                         }
 161                 }
 162
 163                 public Type ListItemType
 164                 {
 165                         get
 166                         {
 167                                 if (type == null)
 168                                         throw new InvalidOperationException ("Property ListItemType is not supported for custom types");
 169
 170                                 if (listItemType != null) return listItemType;
 171
 172                                 if (SchemaType != SchemaTypes.Array)
 173                                         throw new InvalidOperationException (Type.FullName + " is not a collection");
 174                                 else if (type.IsArray)
 175                                         listItemType = type.GetElementType ();
 176                                 else if (typeof(ICollection).IsAssignableFrom (type))
 177                                 {
 178                                         PropertyInfo prop = GetIndexerProperty (type);
 179                                         if (prop == null)
 180                                                 throw new InvalidOperationException ("You must implement a default accessor on " + type.FullName + " because it inherits from ICollection");
 181
 182                                         return prop.PropertyType;
 183                                 }
 184                                 else
 185                                 {
 186                                         MethodInfo met = type.GetMethod ("Add");
 187                                         if (met == null)
 188                                                 throw new InvalidOperationException ("The collection " + type.FullName + " must implement an Add method");
 189
 190                                         ParameterInfo[] pars = met.GetParameters();
 191                                         if (pars.Length != 1)
 192                                                 throw new InvalidOperationException ("The Add method of the collection " + type.FullName + " must have only one parameter");
 193
 194                                         return pars[0].ParameterType;
 195                                 }
 196
 197                                 return listItemType;
 198                         }
 199                 }
 200
 201                 public TypeData ListTypeData
 202                 {
 203                         get
 204                         {
 205                                 if (listTypeData != null) return listTypeData;
 206
 207                                 listTypeData = new TypeData (TypeName + "[]",
 208                                         FullTypeName + "[]",
 209                                         TypeTranslator.GetArrayName(XmlType),
 210                                         SchemaTypes.Array, this);
 211
 212                                 return listTypeData;
 213                         }
 214                 }
 215
 216                 public bool HasPublicConstructor
 217                 {
 218                         get { return hasPublicConstructor; }
 219                 }
 220
 221
 222                 public static PropertyInfo GetIndexerProperty (Type collectionType)
 223                 {
 224                         PropertyInfo[] props = collectionType.GetProperties (BindingFlags.Instance | BindingFlags.Public);
 225                         foreach (PropertyInfo prop in props)
 226                         {
 227                                 ParameterInfo[] pi = prop.GetIndexParameters ();
 228                                 if (pi != null && pi.Length == 1 && pi[0].ParameterType == typeof(int))
 229                                         return prop;
 230                         }
 231                         return null;
 232                 }
 233         }
 234 }