XmlILTypeHelper.cs

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using System.Collections.Generic;
using System.Xml.XPath;
 
namespace System.Xml.Xsl.IlGen;
 
internal static class XmlILTypeHelper
{
    private static readonly Type[] s_typeCodeToStorage = new Type[55]
    {
        typeof(XPathItem),
        typeof(XPathItem),
        typeof(XPathNavigator),
        typeof(XPathNavigator),
        typeof(XPathNavigator),
        typeof(XPathNavigator),
        typeof(XPathNavigator),
        typeof(XPathNavigator),
        typeof(XPathNavigator),
        typeof(XPathNavigator),
        typeof(XPathItem),
        typeof(string),
        typeof(string),
        typeof(bool),
        typeof(decimal),
        typeof(float),
        typeof(double),
        typeof(string),
        typeof(DateTime),
        typeof(DateTime),
        typeof(DateTime),
        typeof(DateTime),
        typeof(DateTime),
        typeof(DateTime),
        typeof(DateTime),
        typeof(DateTime),
        typeof(byte[]),
        typeof(byte[]),
        typeof(string),
        typeof(XmlQualifiedName),
        typeof(XmlQualifiedName),
        typeof(string),
        typeof(string),
        typeof(string),
        typeof(string),
        typeof(string),
        typeof(string),
        typeof(string),
        typeof(string),
        typeof(string),
        typeof(long),
        typeof(decimal),
        typeof(decimal),
        typeof(long),
        typeof(int),
        typeof(int),
        typeof(int),
        typeof(decimal),
        typeof(decimal),
        typeof(long),
        typeof(int),
        typeof(int),
        typeof(decimal),
        typeof(TimeSpan),
        typeof(TimeSpan)
    };
 
    private static readonly Type[] s_typeCodeToCachedStorage = new Type[55]
    {
        typeof(IList<XPathItem>),
        typeof(IList<XPathItem>),
        typeof(IList<XPathNavigator>),
        typeof(IList<XPathNavigator>),
        typeof(IList<XPathNavigator>),
        typeof(IList<XPathNavigator>),
        typeof(IList<XPathNavigator>),
        typeof(IList<XPathNavigator>),
        typeof(IList<XPathNavigator>),
        typeof(IList<XPathNavigator>),
        typeof(IList<XPathItem>),
        typeof(IList<string>),
        typeof(IList<string>),
        typeof(IList<bool>),
        typeof(IList<decimal>),
        typeof(IList<float>),
        typeof(IList<double>),
        typeof(IList<string>),
        typeof(IList<DateTime>),
        typeof(IList<DateTime>),
        typeof(IList<DateTime>),
        typeof(IList<DateTime>),
        typeof(IList<DateTime>),
        typeof(IList<DateTime>),
        typeof(IList<DateTime>),
        typeof(IList<DateTime>),
        typeof(IList<byte[]>),
        typeof(IList<byte[]>),
        typeof(IList<string>),
        typeof(IList<XmlQualifiedName>),
        typeof(IList<XmlQualifiedName>),
        typeof(IList<string>),
        typeof(IList<string>),
        typeof(IList<string>),
        typeof(IList<string>),
        typeof(IList<string>),
        typeof(IList<string>),
        typeof(IList<string>),
        typeof(IList<string>),
        typeof(IList<string>),
        typeof(IList<long>),
        typeof(IList<decimal>),
        typeof(IList<decimal>),
        typeof(IList<long>),
        typeof(IList<int>),
        typeof(IList<int>),
        typeof(IList<int>),
        typeof(IList<decimal>),
        typeof(IList<decimal>),
        typeof(IList<long>),
        typeof(IList<int>),
        typeof(IList<int>),
        typeof(IList<decimal>),
        typeof(IList<TimeSpan>),
        typeof(IList<TimeSpan>)
    };
 
    public static Type GetStorageType(XmlQueryType qyTyp)
    {
        Type type;
        if (qyTyp.IsSingleton)
        {
            type = s_typeCodeToStorage[(int)qyTyp.TypeCode];
            if (!qyTyp.IsStrict && type != typeof(XPathNavigator))
            {
                return typeof(XPathItem);
            }
        }
        else
        {
            type = s_typeCodeToCachedStorage[(int)qyTyp.TypeCode];
            if (!qyTyp.IsStrict && type != typeof(IList<XPathNavigator>))
            {
                return typeof(IList<XPathItem>);
            }
        }
        return type;
    }
}