CallInfo.cs

using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Dynamic.Utils;
using System.Linq.Expressions;

namespace System.Dynamic
{
    [global::__DynamicallyInvokable]
    public sealed class CallInfo
    {
        private readonly int _argCount;

        private readonly ReadOnlyCollection<string> _argNames;

        [global::__DynamicallyInvokable]
        public int ArgumentCount
        {
            [global::__DynamicallyInvokable]
            get
            {
                return _argCount;
            }
        }

        [global::__DynamicallyInvokable]
        public ReadOnlyCollection<string> ArgumentNames
        {
            [global::__DynamicallyInvokable]
            get
            {
                return _argNames;
            }
        }

        [global::__DynamicallyInvokable]
        public CallInfo(int argCount, params string[] argNames)
            : this(argCount, (IEnumerable<string>)argNames)
        {
        }

        [global::__DynamicallyInvokable]
        public CallInfo(int argCount, IEnumerable<string> argNames)
        {
            ContractUtils.RequiresNotNull(argNames, "argNames");
            ReadOnlyCollection<string> readOnlyCollection = argNames.ToReadOnly();
            if (argCount < readOnlyCollection.Count)
            {
                throw Error.ArgCntMustBeGreaterThanNameCnt();
            }
            ContractUtils.RequiresNotNullItems(readOnlyCollection, "argNames");
            _argCount = argCount;
            _argNames = readOnlyCollection;
        }

        [global::__DynamicallyInvokable]
        public override int GetHashCode()
        {
            return _argCount ^ _argNames.ListHashCode();
        }

        [global::__DynamicallyInvokable]
        public override bool Equals(object obj)
        {
            CallInfo callInfo = obj as CallInfo;
            if (_argCount == callInfo._argCount)
            {
                return _argNames.ListEquals(callInfo._argNames);
            }
            return false;
        }
    }
}