NewArrayExpression.cs

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using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Dynamic.Utils;
 
namespace System.Linq.Expressions;
 
[DebuggerTypeProxy(typeof(NewArrayExpressionProxy))]
public class NewArrayExpression : Expression
{
    public sealed override Type Type { get; }
 
    public ReadOnlyCollection<Expression> Expressions { get; }
 
    internal NewArrayExpression(Type type, ReadOnlyCollection<Expression> expressions)
    {
        Expressions = expressions;
        Type = type;
    }
 
    internal static NewArrayExpression Make(ExpressionType nodeType, Type type, ReadOnlyCollection<Expression> expressions)
    {
        if (nodeType == ExpressionType.NewArrayInit)
        {
            return new NewArrayInitExpression(type, expressions);
        }
        return new NewArrayBoundsExpression(type, expressions);
    }
 
    protected internal override Expression Accept(ExpressionVisitor visitor)
    {
        return visitor.VisitNewArray(this);
    }
 
    public NewArrayExpression Update(IEnumerable<Expression> expressions)
    {
        ContractUtils.RequiresNotNull(expressions, "expressions");
        if (ExpressionUtils.SameElements(ref expressions, Expressions))
        {
            return this;
        }
        if (NodeType != ExpressionType.NewArrayInit)
        {
            return Expression.NewArrayBounds(Type.GetElementType(), expressions);
        }
        return Expression.NewArrayInit(Type.GetElementType(), expressions);
    }
}