//-----------------------------------------------------------------------
// <copyright file="SelfFormatterLocator.cs" company="Sirenix IVS">
// Copyright (c) 2018 Sirenix IVS
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// </copyright>
//-----------------------------------------------------------------------

using VRC.Udon.Serialization.OdinSerializer;

[assembly: RegisterFormatterLocator(typeof(SelfFormatterLocator), -60)]

namespace VRC.Udon.Serialization.OdinSerializer
{
    using System;
    using Utilities;

    internal class SelfFormatterLocator : IFormatterLocator
    {
        public bool TryGetFormatter(Type type, FormatterLocationStep step, ISerializationPolicy policy, out IFormatter formatter)
        {
            formatter = null;

            if (!typeof(ISelfFormatter).IsAssignableFrom(type)) return false;

            if ((step == FormatterLocationStep.BeforeRegisteredFormatters && type.IsDefined<AlwaysFormatsSelfAttribute>())
                || step == FormatterLocationStep.AfterRegisteredFormatters)
            {
                #if false //vrc security patch 
                try
                {
                    formatter = (IFormatter)Activator.CreateInstance(typeof(SelfFormatterFormatter<>).MakeGenericType(type));
                }
                catch (Exception ex)
                {
#pragma warning disable CS0618 // Type or member is obsolete
                    if (allowWeakFallbackFormatters && (ex is ExecutionEngineException || ex.GetBaseException() is ExecutionEngineException))
#pragma warning restore CS0618 // Type or member is obsolete
                    {
                        formatter = new WeakSelfFormatterFormatter(type);
                    }
                    else throw;
                }
                #endif
                formatter = (IFormatter)Activator.CreateInstance(typeof(SelfFormatterFormatter<>).MakeGenericType(type));

                return true;
            }

            return false;
        }
    }
}