using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Columns;
using BenchmarkDotNet.Configs;
using BenchmarkDotNet.Environments;
using BenchmarkDotNet.Jobs;
using BenchmarkDotNet.Reports;
using System;

[HideColumns("Error", "StdDev", "Median", "RatioSD")]
[MemoryDiagnoser(displayGenColumns: false)]
[Config(typeof(Config))]
public class ReflectionDotnet8
{
    [Benchmark]
    public object[] GetCustomAttributes() => typeof(C).GetCustomAttributes(typeof(MyAttribute), inherit: true);

    [My(Value1 = 1, Value2 = 2)]
    class C { }

    [AttributeUsage(AttributeTargets.All)]
    public class MyAttribute : Attribute
    {
        public int Value1 { get; set; }
        public int Value2 { get; set; }
    }
    private class Config : ManualConfig
    {
        public Config()
        {
            AddJob(Job.Default.WithId(".NET 7").WithRuntime(CoreRuntime.Core70).AsBaseline());
            AddJob(Job.Default.WithId(".NET 8").WithRuntime(CoreRuntime.Core80));

            SummaryStyle =
                SummaryStyle.Default.WithRatioStyle(RatioStyle.Trend);
        }
    }

}

// .NET 7, .NET 8
public object[] GetCustomAttributes()
{
    return typeof(C).GetCustomAttributes(typeof(MyAttribute), true);
}

// .NET 7
.method public hidebysig 
    instance object[] GetCustomAttributes () cil managed 
{
    .custom instance void System.Runtime.CompilerServices.NullableContextAttribute::.ctor(uint8) = (
        01 00 01 00 00
    )
    .custom instance void [BenchmarkDotNet.Annotations]BenchmarkDotNet.Attributes.BenchmarkAttribute::.ctor(int32, string) = (
        01 00 19 00 00 00 01 5f 00 00
    )
    // Method begins at RVA 0x209d
    // Code size 27 (0x1b)
    .maxstack 8

    // sequence point: (line 26, col 46) to (line 26, col 111) in _
    IL_0000: ldtoken ReflectionDotnet8/C
    IL_0005: call class [System.Runtime]System.Type [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
    IL_000a: ldtoken ReflectionDotnet8/MyAttribute
    IL_000f: call class [System.Runtime]System.Type [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
    IL_0014: ldc.i4.1
    IL_0015: callvirt instance object[] [System.Runtime]System.Reflection.MemberInfo::GetCustomAttributes(class [System.Runtime]System.Type, bool)
    IL_001a: ret
}

// .NET 8
.method public hidebysig 
    instance object[] GetCustomAttributes () cil managed 
{
    .custom instance void [System.Runtime]System.Runtime.CompilerServices.NullableContextAttribute::.ctor(uint8) = (
        01 00 01 00 00
    )
    .custom instance void [BenchmarkDotNet.Annotations]BenchmarkDotNet.Attributes.BenchmarkAttribute::.ctor(int32, string) = (
        01 00 19 00 00 00 01 5f 00 00
    )
    // Method begins at RVA 0x2050
    // Code size 27 (0x1b)
    .maxstack 8

    // sequence point: (line 26, col 46) to (line 26, col 111) in _
    IL_0000: ldtoken ReflectionDotnet8/C
    IL_0005: call class [System.Runtime]System.Type [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
    IL_000a: ldtoken ReflectionDotnet8/MyAttribute
    IL_000f: call class [System.Runtime]System.Type [System.Runtime]System.Type::GetTypeFromHandle(valuetype [System.Runtime]System.RuntimeTypeHandle)
    IL_0014: ldc.i4.1
    IL_0015: callvirt instance object[] [System.Runtime]System.Reflection.MemberInfo::GetCustomAttributes(class [System.Runtime]System.Type, bool)
    IL_001a: ret
}