CallInfo.cs

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using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics.CodeAnalysis;
using System.Dynamic.Utils;
using System.Linq.Expressions;
 
namespace System.Dynamic;
 
public sealed class CallInfo
{
    public int ArgumentCount { get; }
 
    public ReadOnlyCollection<string> ArgumentNames { get; }
 
    public CallInfo(int argCount, params string[] argNames)
        : this(argCount, (IEnumerable<string>)argNames)
    {
    }
 
    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");
        ArgumentCount = argCount;
        ArgumentNames = readOnlyCollection;
    }
 
    public override int GetHashCode()
    {
        return ArgumentCount ^ ArgumentNames.ListHashCode();
    }
 
    public override bool Equals([NotNullWhen(true)] object? obj)
    {
        if (obj is CallInfo callInfo && ArgumentCount == callInfo.ArgumentCount)
        {
            return ArgumentNames.ListEquals(callInfo.ArgumentNames);
        }
        return false;
    }
}