// Unity C# reference source
// Copyright (c) Unity Technologies. For terms of use, see
// https://unity3d.com/legal/licenses/Unity_Reference_Only_License

using System;
using Mono.Cecil;

namespace Unity.CecilTools.Extensions
{
    public static class ResolutionExtensions
    {
        public static TypeDefinition CheckedResolve(this TypeReference type)
        {
            return Resolve(type, reference => reference.Resolve());
        }

        public static MethodDefinition CheckedResolve(this MethodReference method)
        {
            return Resolve(method, reference => reference.Resolve());
        }

        private static TDefinition Resolve<TReference, TDefinition>(TReference reference, Func<TReference, TDefinition> resolve)
            where TReference : MemberReference
            where TDefinition : class, IMemberDefinition
        {
            if (reference.Module == null)
                throw new ResolutionException(reference);

            var definition = resolve(reference);
            if (definition == null)
                throw new ResolutionException(reference);

            return definition;
        }
    }
}