using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System;
using System.Runtime.CompilerServices;
using System.Text;

namespace bench_readonly
{
    class Program
    {
        static void Main(string[] args)
        {
            var summary = BenchmarkRunner.Run(typeof(Program).Assembly);
        }
    }

    [MarkdownExporterAttribute.GitHub]
    public class ToStringFix
    {
        [Benchmark]
        public new void ToString()
        {
            var rec1 = new Rec1("abc", false, 42, new Rec2("def", 123));
            rec1.ToString();
        }

        [Benchmark]
        public void ToStringReadonly()
        {
            var rec3 = new Rec3("abc", false, 42, new Rec4("def", 123));
            rec3.ToString();
        }

        [Benchmark]
        public void ToString_RefReadonly()
        {
            var rec1 = new Rec1("abc", false, 42, new Rec2("def", 123));
            local(in rec1);

            void local(in Rec1 rec1) => rec1.ToString();
        }

        [Benchmark]
        public void ToStringReadonly_RefReadonly()
        {
            var rec3 = new Rec3("abc", false, 42, new Rec4("def", 123));
            local(in rec3);

            void local(in Rec3 rec3) => rec3.ToString();
        }

        public record struct Rec1(string Prop1, bool Prop2, int Prop3, Rec2 Prop4);
        public record struct Rec2(string Prop1, int Prop2);

        public readonly record struct Rec3(string Prop1, bool Prop2, int Prop3, Rec4 Prop4);
        public readonly record struct Rec4(string Prop1, int Prop2);
    }

    [MarkdownExporterAttribute.GitHub]
    public class ToStringFix_StructConstrainedField
    {
        [Benchmark]
        public new void ToString()
        {
            var rec1 = new Rec1<Rec2>("abc", false, 42, new Rec2("def", 123));
            rec1.ToString();
        }

        [Benchmark]
        public void ToStringReadonly()
        {
            var rec3 = new Rec3<Rec4>("abc", false, 42, new Rec4("def", 123));
            rec3.ToString();
        }

        [Benchmark]
        public void ToString_RefReadonly()
        {
            var rec1 = new Rec1<Rec2>("abc", false, 42, new Rec2("def", 123));
            local(in rec1);

            void local(in Rec1<Rec2> rec1) => rec1.ToString();
        }

        [Benchmark]
        public void ToStringReadonly_RefReadonly()
        {
            var rec3 = new Rec3<Rec4>("abc", false, 42, new Rec4("def", 123));
            local(in rec3);

            void local(in Rec3<Rec4> rec3) => rec3.ToString();
        }

        public record struct Rec1<T>(string Prop1, bool Prop2, int Prop3, T Prop4) where T : struct;

        public record struct Rec2(string Prop1, int Prop2);

        public readonly record struct Rec3<T>(string Prop1, bool Prop2, int Prop3, T Prop4) where T : struct;

        public readonly record struct Rec4(string Prop1, int Prop2);
    }
}