BadBinaryUnpackExpression.cs

Go to the documentation of this file.

using BadScript2.Common;
using BadScript2.Runtime;
using BadScript2.Runtime.Error;
using BadScript2.Runtime.Objects;
 
namespace BadScript2.Parser.Expressions.Binary;
 
public class BadBinaryUnpackExpression : BadBinaryExpression
{
    public BadBinaryUnpackExpression(BadExpression left, BadExpression right, BadSourcePosition position) : base(
        left,
        right,
        position
    ) { }
 
 
    public static BadTable Unpack(BadObject left, BadObject right, BadSourcePosition position)
    {
        BadTable result = new BadTable();
 
        if (left is not BadTable leftT || right is not BadTable rightT)
        {
            throw new BadRuntimeException("Unpack operator requires 2 tables", position);
        }
 
        foreach (KeyValuePair<string, BadObject> o in leftT.InnerTable)
        {
            result.InnerTable[o.Key] = o.Value;
            result.PropertyInfos[o.Key] = leftT.PropertyInfos[o.Key];
        }
 
        foreach (KeyValuePair<string, BadObject> o in rightT.InnerTable)
        {
            result.InnerTable[o.Key] = o.Value;
            result.PropertyInfos[o.Key] = rightT.PropertyInfos[o.Key];
        }
 
        return result;
    }
 
    protected override IEnumerable<BadObject> InnerExecute(BadExecutionContext context)
    {
        BadObject left = BadObject.Null;
        BadObject right = BadObject.Null;
 
        foreach (BadObject o in Left.Execute(context))
        {
            left = o;
 
            yield return o;
        }
 
        foreach (BadObject o in Right.Execute(context))
        {
            right = o;
 
            yield return o;
        }
 
        left = left.Dereference();
        right = right.Dereference();
 
        yield return Unpack(left, right, Position);
    }
 
    protected override string GetSymbol()
    {
        return "...";
    }
}