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path: root/mono/DBusType/Int64.cs
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using System;
using System.Runtime.InteropServices;
using System.Reflection.Emit;

using DBus;

namespace DBus.DBusType
{
  /// <summary>
  /// 64-bit integer.
  /// </summary>
  public class Int64 : IDBusType
  {
    public const char Code = 'x';
    private System.Int64 val;
    
    private Int64()
    {
    }
    
    public Int64(System.Int64 val, Service service) 
    {
      this.val = val;
    }

    public Int64(IntPtr iter, Service service)
    {
      this.val = dbus_message_iter_get_int64(iter);
    }
    
    public void Append(IntPtr iter)
    {
      if (!dbus_message_iter_append_int64(iter, val))
	throw new ApplicationException("Failed to append INT64 argument:" + val);
    }

    public static bool Suits(System.Type type) 
    {
      if (type.IsEnum && type.UnderlyingSystemType == typeof(System.Int64)) {
	return true;
      }

      switch (type.ToString()) {
      case "System.Int64":
      case "System.Int64&":
	return true;
      }
      
      return false;
    }

    public static void EmitMarshalIn(ILGenerator generator, Type type)
    {
      if (type.IsByRef) {
	generator.Emit(OpCodes.Ldind_I8);
      }
    }

    public static void EmitMarshalOut(ILGenerator generator, Type type, bool isReturn) 
    {
      generator.Emit(OpCodes.Unbox, type);
      generator.Emit(OpCodes.Ldind_I8);
      if (!isReturn) {
	generator.Emit(OpCodes.Stind_I8);
      }
    }
    
    public object Get() 
    {
      return this.val;
    }

    public object Get(System.Type type)
    {
      if (type.IsEnum) {
	return Enum.ToObject(type, this.val);
      }

      switch (type.ToString()) {
      case "System.Int64":
      case "System.Int64&":
	return this.val;
      default:
	throw new ArgumentException("Cannot cast DBus.Type.Int64 to type '" + type.ToString() + "'");
      }
    }    

    [DllImport("dbus-1")]
    private extern static System.Int64 dbus_message_iter_get_int64(IntPtr iter);
 
    [DllImport("dbus-1")]
    private extern static bool dbus_message_iter_append_int64(IntPtr iter, System.Int64 value);
  }
}