private static MetaInformation GetOrCreateMetaInfo(Type typeTo)
{
var found = MetaRepository.GetOrDefault(typeTo);
if (found != null)
{
return(found);
}
var meta = new MetaInformation(typeTo);
MetaRepository.AddOrUpdate(typeTo, meta);
return(meta);
}
private static Type GetOrAddTargetType(Constants constants)
{
var length = constants.ConstantExpressions.Count;
var types = new Type[length];
var foundType = TargetTypes.GetOrDefault(length);
if (foundType != null)
{
if (length <= 0)
{
return(foundType);
}
for (var i = 0; i < length; i++)
{
types[i] = constants.ConstantExpressions[i].Type;
}
return(foundType.MakeGenericType(types));
}
var fields = new FieldInfo[length];
var typeBuilder = ExpressionEmitter.ModuleBuilder.Value.DefineType("DT" + Interlocked.Increment(ref typeCounter), TypeAttributes.Public);
if (length > 0)
{
var typeParamNames = new string[length];
for (var i = 0; i < length; i++)
{
typeParamNames[i] = "T" + i;
}
var typeParams = typeBuilder.DefineGenericParameters(typeParamNames);
#if NETSTANDARD1_3
var genericTypes = new Type[length];
#endif
for (var i = 0; i < length; i++)
{
types[i] = constants.ConstantExpressions[i].Type;
#if NETSTANDARD1_3
var genericType = typeParams[i].AsType();
genericTypes[i] = genericType;
fields[i] = typeBuilder.DefineField("F" + i, genericType, FieldAttributes.Public);
#else
fields[i] = typeBuilder.DefineField("F" + i, typeParams[i], FieldAttributes.Public);
#endif
}
#if NETSTANDARD1_3
var constructor = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.HasThis, genericTypes);
#else
var constructor = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.HasThis, typeParams);
#endif
var generator = constructor.GetILGenerator();
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Call, Stashbox.Constants.ObjectConstructor);
for (var i = 0; i < length; i++)
{
generator.Emit(OpCodes.Ldarg_0);
generator.LoadParameter(i + 1);
generator.Emit(OpCodes.Stfld, fields[i]);
}
generator.Emit(OpCodes.Ret);
}
#if NETSTANDARD1_3
var type = typeBuilder.CreateTypeInfo().AsType();
#else
var type = typeBuilder.CreateType();
#endif
TargetTypes.AddOrUpdate(length, type);
return(length > 0 ? type.MakeGenericType(types) : type);
}