public static Type GetOrAddCapturedArgumentsType(Expression[] expressions)
{
var length = expressions.Length;
var types = new Type[length];
var foundType = CapturedArgumentTypes.GetOrDefault(length);
if (foundType != null)
{
if (length <= 0)
{
return(foundType);
}
for (var i = 0; i < length; i++)
{
types[i] = expressions[i].Type;
}
return(foundType.MakeGenericType(types));
}
var fields = new FieldInfo[length];
var typeBuilder = ModuleBuilder.Value.DefineType("Stashbox.Dynamic.DT" + Interlocked.Increment(ref typeCounter), TypeAttributes.Public);
var typeParamNames = new string[length];
for (var i = 0; i < length; i++)
{
typeParamNames[i] = "T" + i;
}
var typeParams = typeBuilder.DefineGenericParameters(typeParamNames);
#if NETSTANDARD
var genericTypes = new Type[length];
#endif
for (var i = 0; i < length; i++)
{
types[i] = expressions[i].Type;
#if NETSTANDARD
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 NETSTANDARD
var type = typeBuilder.CreateTypeInfo().AsType();
#else
var type = typeBuilder.CreateType();
#endif
Swap.SwapValue(ref CapturedArgumentTypes, (t1, t2, t3, t4, t) =>
t.AddOrUpdate(t1, t2), length, type, Constants.DelegatePlaceholder, Constants.DelegatePlaceholder);
return(type.MakeGenericType(types));
}
public static Type GetOrAddTargetType(Type[] types)
{
var length = types.Length;
var foundType = TargetTypes.GetOrDefault(length);
if (foundType != null)
{
return(foundType.MakeGenericType(types));
}
var fields = new FieldInfo[length];
var typeBuilder = ModuleBuilder.Value.DefineType("Stashbox.Dynamic.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 NETSTANDARD
var genericTypes = new Type[length];
#endif
for (var i = 0; i < length; i++)
{
#if NETSTANDARD
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 NETSTANDARD
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, 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 NETSTANDARD
var type = typeBuilder.CreateTypeInfo().AsType();
#else
var type = typeBuilder.CreateType();
#endif
Swap.SwapValue(ref TargetTypes, t => t.AddOrUpdate(length, type));
return(type.MakeGenericType(types));
}