// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
using System;
using System.Dynamic;
using System.Linq;
namespace Microsoft.ClearScript
{
///
/// Extends for enhanced behavior and performance in a scripting environment.
///
public abstract class DynamicHostObject : DynamicObject
{
// ReSharper disable EmptyConstructor
///
/// Initializes a new instance.
///
protected DynamicHostObject()
{
// the help file builder (SHFB) insists on an empty constructor here
}
// ReSharper restore EmptyConstructor
///
/// Determines whether the object has the specified named member.
///
/// The member name for which to search.
/// True to perform a case-insensitive search, false otherwise.
/// True if the named member was found, false otherwise.
public virtual bool HasMember(string name, bool ignoreCase)
{
var comparer = ignoreCase ? StringComparer.OrdinalIgnoreCase : StringComparer.Ordinal;
return GetDynamicMemberNames().Contains(name, comparer);
}
internal static bool HasMember(IDynamicMetaObjectProvider metaObjectProvider, DynamicMetaObject metaObject, string name, bool ignoreCase)
{
if (metaObjectProvider is DynamicHostObject hostObject)
{
return hostObject.HasMember(name, ignoreCase);
}
var comparer = ignoreCase ? StringComparer.OrdinalIgnoreCase : StringComparer.Ordinal;
return metaObject.GetDynamicMemberNames().Contains(name, comparer);
}
}
}