NewArrayInitInstruction.cs

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namespace System.Linq.Expressions.Interpreter;
 
internal sealed class NewArrayInitInstruction : Instruction
{
    private readonly Type _elementType;
 
    private readonly int _elementCount;
 
    public override int ConsumedStack => _elementCount;
 
    public override int ProducedStack => 1;
 
    public override string InstructionName => "NewArrayInit";
 
    internal NewArrayInitInstruction(Type elementType, int elementCount)
    {
        _elementType = elementType;
        _elementCount = elementCount;
    }
 
    public override int Run(InterpretedFrame frame)
    {
        Array array = Array.CreateInstance(_elementType, _elementCount);
        for (int num = _elementCount - 1; num >= 0; num--)
        {
            array.SetValue(frame.Pop(), num);
        }
        frame.Push(array);
        return 1;
    }
}