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using System;
using System.Runtime.InteropServices;
using System.Reflection.Emit;
using DBus;
namespace DBus.DBusType
{
/// <summary>
/// IEEE 754 double
/// </summary>
public class Double : IDBusType
{
public const char Code = 'd';
private System.Double val;
private Double()
{
}
public Double(System.Double val, Service service)
{
this.val = val;
}
public Double(IntPtr iter, Service service)
{
dbus_message_iter_get_basic (iter, out this.val);
}
public void Append(IntPtr iter)
{
if (!dbus_message_iter_append_basic (iter, (int) Code, ref val))
throw new ApplicationException("Failed to append DOUBLE argument:" + val);
}
public static bool Suits(System.Type type)
{
switch (type.ToString()) {
case "System.Double":
case "System.Double&":
return true;
}
return false;
}
public static void EmitMarshalIn(ILGenerator generator, Type type)
{
if (type.IsByRef) {
generator.Emit(OpCodes.Ldind_R8);
}
}
public static void EmitMarshalOut(ILGenerator generator, Type type, bool isReturn)
{
generator.Emit(OpCodes.Unbox, type);
generator.Emit(OpCodes.Ldind_R8);
if (!isReturn) {
generator.Emit(OpCodes.Stind_R8);
}
}
public object Get()
{
return this.val;
}
public object Get(System.Type type)
{
switch (type.ToString()) {
case "System.Double":
case "System.Double&":
return this.val;
default:
throw new ArgumentException("Cannot cast DBus.Type.Double to type '" + type.ToString() + "'");
}
}
[DllImport("dbus-1")]
private extern static void dbus_message_iter_get_basic (IntPtr iter, out double value);
[DllImport("dbus-1")]
private extern static bool dbus_message_iter_append_basic (IntPtr iter, int type, ref double value);
}
}
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