CreateDelegateInstruction.cs

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using System.Runtime.CompilerServices;
 
namespace System.Linq.Expressions.Interpreter;
 
internal sealed class CreateDelegateInstruction : Instruction
{
    private readonly LightDelegateCreator _creator;
 
    public override int ConsumedStack => _creator.Interpreter.ClosureSize;
 
    public override int ProducedStack => 1;
 
    public override string InstructionName => "CreateDelegate";
 
    internal CreateDelegateInstruction(LightDelegateCreator delegateCreator)
    {
        _creator = delegateCreator;
    }
 
    public override int Run(InterpretedFrame frame)
    {
        IStrongBox[] array;
        if (ConsumedStack > 0)
        {
            array = new IStrongBox[ConsumedStack];
            for (int num = array.Length - 1; num >= 0; num--)
            {
                array[num] = (IStrongBox)frame.Pop();
            }
        }
        else
        {
            array = null;
        }
        Delegate value = _creator.CreateDelegate(array);
        frame.Push(value);
        return 1;
    }
}