public static void GenDeserializerCall(CodeGenContext ctx, ILGenerator il, Type type)
{
// We can call the Deserializer method directly for:
// - Value types
// - Array types
// - Sealed types with static Deserializer method, as the method will handle null
// Other reference types go through the DeserializesSwitch
bool direct;
if (type.IsValueType || type.IsArray)
direct = true;
else if (type.IsSealed && ctx.IsGenerated(type) == false)
direct = true;
else if (!ctx.HasSwitch(type))
direct = true;
else
direct = false;
var method = direct ? ctx.GetReaderMethodInfo(type) : ctx.DeserializerSwitchMethodInfo;
il.EmitCall(OpCodes.Call, method, null);
}
public static void GenerateSerializerSwitchTyped(CodeGenContext ctx, ILGenerator il, IDictionary<Type, TypeData> map)
{
// arg0: Stream, arg1: object, arg2: ushort
var idLocal = il.DeclareLocal(typeof(ushort));
// +1 for 0 (null)
var jumpTable = new Label[map.Count + 1];
jumpTable[0] = il.DefineLabel();
foreach (var kvp in map)
jumpTable[kvp.Value.TypeID] = il.DefineLabel();
// get TypeID from object's Type
il.Emit(OpCodes.Ldarg_2);
il.Emit(OpCodes.Switch, jumpTable);
il.Emit(OpCodes.Newobj, Helpers.ExceptionCtorInfo);
il.Emit(OpCodes.Throw);
/* null case */
il.MarkLabel(jumpTable[0]);
il.Emit(OpCodes.Ret);
/* cases for types */
foreach (var kvp in map)
{
var type = kvp.Key;
var data = kvp.Value;
il.MarkLabel(jumpTable[data.TypeID]);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg_1);
il.Emit(type.IsValueType ? OpCodes.Unbox_Any : OpCodes.Castclass, type);
il.EmitCall(OpCodes.Call, data.WriterTypedMethodInfo, null);
il.Emit(OpCodes.Ret);
}
}
public static void GenerateSerializerSwitch(CodeGenContext ctx, ILGenerator il, IDictionary<Type, TypeData> map)
{
// arg0: Stream, arg1: object
var idLocal = il.DeclareLocal(typeof(ushort));
// bool ilLocal2 = Helpers.HasSwitchTypeMethodInfo(obj);
var idLocal2 = il.DeclareLocal(typeof(bool));
il.Emit(OpCodes.Ldarg_1);
il.EmitCall(OpCodes.Call, Helpers.HasSwitchTypeMethodInfo, null);
il.Emit(OpCodes.Stloc_S, idLocal2);
// get TypeID from object's Type
il.Emit(OpCodes.Ldarg_1);
il.EmitCall(OpCodes.Call, Helpers.GetTypeIDMethodInfo, null);
il.Emit(OpCodes.Stloc_S, idLocal);
var hasSwitchLabel = il.DefineLabel();
// if (idLocal2.HasSwitch)
il.Emit(OpCodes.Ldloc_S, idLocal2);
il.Emit(OpCodes.Brfalse_S, hasSwitchLabel);
// write typeID
//il.Emit(OpCodes.)
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldloc_S, idLocal);
il.EmitCall(OpCodes.Call, ctx.GetWriterMethodInfo(typeof(ushort)), null);
il.MarkLabel(hasSwitchLabel);
// +1 for 0 (null)
var jumpTable = new Label[map.Count + 1];
jumpTable[0] = il.DefineLabel();
foreach (var kvp in map)
jumpTable[kvp.Value.TypeID] = il.DefineLabel();
il.Emit(OpCodes.Ldloc_S, idLocal);
il.Emit(OpCodes.Switch, jumpTable);
il.Emit(OpCodes.Newobj, Helpers.ExceptionCtorInfo);
il.Emit(OpCodes.Throw);
/* null case */
il.MarkLabel(jumpTable[0]);
il.Emit(OpCodes.Ret);
/* cases for types */
foreach (var kvp in map)
{
var type = kvp.Key;
var data = kvp.Value;
il.MarkLabel(jumpTable[data.TypeID]);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg_1);
il.Emit(type.IsValueType ? OpCodes.Unbox_Any : OpCodes.Castclass, type);
il.EmitCall(OpCodes.Call, data.WriterMethodInfo, null);
il.Emit(OpCodes.Ret);
}
}
