DataType.cs :  » IDEs » MonoDevelop » MonoDevelop » Core » Serialization » C# / CSharp Open Source

//
// DataType.cs
//
// Author:
//   Lluis Sanchez Gual
//
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System;
using System.Reflection;

namespace MonoDevelop.Core.Serialization{
  public abstract class DataType
  {
    Type type;
    DataContext ctx;
    string name;
    
    public DataType (Type type)
    {
      this.type = type;
      name = GetTypeName (type);
    }
    
    string GetTypeName (Type type)
    {
      Type[] targs = type.GetGenericArguments ();
      if (targs != null && targs.Length > 0) {
        string name = type.Name;
        name = name.Substring (0, name.IndexOf ('`'));
        name += "Of";
        foreach (Type pt in targs)
          name += GetTypeName (pt);
        return name;
      } else
        return type.Name;
    }
    
    internal void SetContext (DataContext ctx)
    {
      this.ctx = ctx;
      Initialize ();
    }
    
    protected ItemPropertyAttribute FindPropertyAttribute (object[] attributes, string scope)
    {
      scope = scope.TrimStart ('/');
      
      foreach (object at in attributes) {
        ItemPropertyAttribute iat = at as ItemPropertyAttribute;
        if (iat != null && iat.Scope == scope) return iat;
      }
      return null;
    }

    protected DataContext Context {
      get { return ctx; }
    }

    public string Name {
      get { return name; }
      set { name = value; }
    }
    
    public Type ValueType {
      get { return type; }
    }
    
    protected virtual void Initialize ()
    {
    }
    
    internal protected virtual object GetMapData (object[] attributes, string scope)
    {
      return null;
    }
    
    public DataNode Serialize (SerializationContext serCtx, object mapData, object value)
    {
      return serCtx.Serializer.OnSerialize (this, serCtx, mapData, value);
    }
    
    public object Deserialize (SerializationContext serCtx, object mapData, DataNode data)
    {
      return serCtx.Serializer.OnDeserialize (this, serCtx, mapData, data);
    }
    
    public void Deserialize (SerializationContext serCtx, object mapData, DataNode data, object valueInstance)
    {
      serCtx.Serializer.OnDeserialize (this, serCtx, mapData, data, valueInstance);
    }
    
    public object CreateInstance (SerializationContext serCtx, DataNode data)
    {
      return serCtx.Serializer.OnCreateInstance (this, serCtx, data);
    }
    
    internal protected abstract DataNode OnSerialize (SerializationContext serCtx, object mapData, object value);
    internal protected abstract object OnDeserialize (SerializationContext serCtx, object mapData, DataNode data);
    internal protected virtual void OnDeserialize (SerializationContext serCtx, object mapData, DataNode data, object valueInstance)
    { throw new InvalidOperationException ("Could not create instance for type '" + ValueType + "'"); }
    
    internal protected virtual object OnCreateInstance (SerializationContext serCtx, DataNode data)
    { throw new InvalidOperationException ("Could not create instance for type '" + ValueType + "'"); }
    
    public abstract bool IsSimpleType { get; }
    public abstract bool CanCreateInstance { get; }
    public abstract bool CanReuseInstance { get; }
  }
}