Func <BasePackable, Type, Stream, object> GetReadFunc(Type type)
{
if (ReadFuncs.ContainsKey(type))
{
return(ReadFuncs[type]);
}
foreach (var t in type.GetInterfaces())
{
if (UnpackInterfaces.ContainsKey(t))
{
return(UnpackInterfaces[t]);
}
}
throw new NotSupportedException();
}
public Action <object, Stream> CreateRead(Type type)
{
var members = GetMembers(type);
var ret = new DynamicMethod("Read_" + type.MetadataToken, null, new Type[] { typeof(object), typeof(Stream) });
var il = ret.GetILGenerator();
foreach (MemberInfo m in members)
{
var f = m as FieldInfo;
var p = m as PropertyInfo;
Type mtype = null;
if (m is FieldInfo)
{
mtype = f.FieldType;
}
else if (m is PropertyInfo)
{
mtype = p.PropertyType;
}
if (!ReadFuncs.ContainsKey(mtype))
{
throw new NotSupportedException();
}
var ifnotnull = il.DefineLabel();
var ifnull = il.DefineLabel();
if (!mtype.IsValueType)
{
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Call, ReadFuncs[typeof(byte)].Method);
il.Emit(OpCodes.Unbox_Any, typeof(byte));
il.Emit(OpCodes.Brtrue, ifnotnull);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Castclass, type);
il.Emit(OpCodes.Ldnull);
if (m is FieldInfo)
{
il.Emit(OpCodes.Stfld, f);
}
else if (m is PropertyInfo)
{
il.Emit(OpCodes.Call, p.GetSetMethod());
}
il.Emit(OpCodes.Br, ifnull);
}
il.MarkLabel(ifnotnull);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Castclass, type);
il.Emit(OpCodes.Ldarg_1);
il.Emit(OpCodes.Call, ReadFuncs[mtype].Method);
if (mtype.IsValueType)
{
il.Emit(OpCodes.Unbox_Any, mtype);
}
else
{
il.Emit(OpCodes.Castclass, mtype);
}
if (m is FieldInfo)
{
il.Emit(OpCodes.Stfld, f);
}
else if (m is PropertyInfo)
{
il.Emit(OpCodes.Call, p.GetSetMethod());
}
il.MarkLabel(ifnull);
}
il.Emit(OpCodes.Ret);
return((Action <object, Stream>)ret.CreateDelegate(typeof(Action <object, Stream>)));
}
