ByRefNewInstruction.cs

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using System.Dynamic.Utils;
using System.Reflection;
 
namespace System.Linq.Expressions.Interpreter;
 
internal sealed class ByRefNewInstruction : NewInstruction
{
    private readonly ByRefUpdater[] _byrefArgs;
 
    public override string InstructionName => "ByRefNew";
 
    internal ByRefNewInstruction(ConstructorInfo target, int argumentCount, ByRefUpdater[] byrefArgs)
        : base(target, argumentCount)
    {
        _byrefArgs = byrefArgs;
    }
 
    public sealed override int Run(InterpretedFrame frame)
    {
        int num = frame.StackIndex - _argumentCount;
        object[] args = GetArgs(frame, num);
        try
        {
            object obj;
            try
            {
                obj = _constructor.Invoke(args);
            }
            catch (TargetInvocationException exception)
            {
                ExceptionHelpers.UnwrapAndRethrow(exception);
                throw ContractUtils.Unreachable;
            }
            frame.Data[num] = obj;
            frame.StackIndex = num + 1;
        }
        finally
        {
            ByRefUpdater[] byrefArgs = _byrefArgs;
            foreach (ByRefUpdater byRefUpdater in byrefArgs)
            {
                byRefUpdater.Update(frame, args[byRefUpdater.ArgumentIndex]);
            }
        }
        return 1;
    }
}