FieldByRefUpdater.cs

Go to the documentation of this file.

using System.Reflection;
 
namespace System.Linq.Expressions.Interpreter;
 
internal sealed class FieldByRefUpdater : ByRefUpdater
{
    private readonly LocalDefinition? _object;
 
    private readonly FieldInfo _field;
 
    public FieldByRefUpdater(LocalDefinition? obj, FieldInfo field, int argumentIndex)
        : base(argumentIndex)
    {
        _object = obj;
        _field = field;
    }
 
    public override void Update(InterpretedFrame frame, object value)
    {
        object obj = ((!_object.HasValue) ? null : frame.Data[_object.GetValueOrDefault().Index]);
        _field.SetValue(obj, value);
    }
 
    public override void UndefineTemps(InstructionList instructions, LocalVariables locals)
    {
        if (_object.HasValue)
        {
            locals.UndefineLocal(_object.GetValueOrDefault(), instructions.Count);
        }
    }
}