using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Linq;
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using DPumpHydr.WinFrmUI.WenSkin.Json.Utilities;
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namespace DPumpHydr.WinFrmUI.WenSkin.Json.Linq
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{
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/// <summary>
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/// Represents a collection of <see cref="T:Newtonsoft.Json.Linq.JToken" /> objects.
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/// </summary>
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/// <typeparam name="T">The type of token</typeparam>
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public struct JEnumerable<T> : IJEnumerable<T>, IEnumerable<T>, IEnumerable, IEquatable<JEnumerable<T>> where T : JToken
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{
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/// <summary>
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/// An empty collection of <see cref="T:Newtonsoft.Json.Linq.JToken" /> objects.
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/// </summary>
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public static readonly JEnumerable<T> Empty = new JEnumerable<T>(Enumerable.Empty<T>());
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private readonly IEnumerable<T> _enumerable;
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/// <summary>
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/// Gets the <see cref="T:Newtonsoft.Json.Linq.IJEnumerable`1" /> with the specified key.
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/// </summary>
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/// <value></value>
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public IJEnumerable<JToken> this[object key]
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{
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get
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{
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if (_enumerable == null)
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{
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return JEnumerable<JToken>.Empty;
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}
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return new JEnumerable<JToken>(_enumerable.Values<T, JToken>(key));
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}
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="T:Newtonsoft.Json.Linq.JEnumerable`1" /> struct.
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/// </summary>
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/// <param name="enumerable">The enumerable.</param>
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public JEnumerable(IEnumerable<T> enumerable)
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{
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ValidationUtils.ArgumentNotNull(enumerable, "enumerable");
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_enumerable = enumerable;
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}
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/// <summary>
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/// Returns an enumerator that iterates through the collection.
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/// </summary>
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/// <returns>
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/// A <see cref="T:System.Collections.Generic.IEnumerator`1" /> that can be used to iterate through the collection.
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/// </returns>
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public IEnumerator<T> GetEnumerator()
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{
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if (_enumerable == null)
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{
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return Empty.GetEnumerator();
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}
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return _enumerable.GetEnumerator();
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}
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/// <summary>
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/// Returns an enumerator that iterates through a collection.
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/// </summary>
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/// <returns>
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/// An <see cref="T:System.Collections.IEnumerator" /> object that can be used to iterate through the collection.
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/// </returns>
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IEnumerator IEnumerable.GetEnumerator()
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{
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return GetEnumerator();
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}
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/// <summary>
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/// Determines whether the specified <see cref="T:Newtonsoft.Json.Linq.JEnumerable`1" /> is equal to this instance.
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/// </summary>
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/// <param name="other">The <see cref="T:Newtonsoft.Json.Linq.JEnumerable`1" /> to compare with this instance.</param>
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/// <returns>
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/// <c>true</c> if the specified <see cref="T:Newtonsoft.Json.Linq.JEnumerable`1" /> is equal to this instance; otherwise, <c>false</c>.
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/// </returns>
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public bool Equals(JEnumerable<T> other)
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{
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return object.Equals(_enumerable, other._enumerable);
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}
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/// <summary>
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/// Determines whether the specified <see cref="T:System.Object" /> is equal to this instance.
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/// </summary>
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/// <param name="obj">The <see cref="T:System.Object" /> to compare with this instance.</param>
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/// <returns>
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/// <c>true</c> if the specified <see cref="T:System.Object" /> is equal to this instance; otherwise, <c>false</c>.
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/// </returns>
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public override bool Equals(object obj)
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{
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if (obj is JEnumerable<T>)
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{
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return Equals((JEnumerable<T>)obj);
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}
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return false;
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}
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/// <summary>
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/// Returns a hash code for this instance.
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/// </summary>
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/// <returns>
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/// A hash code for this instance, suitable for use in hashing algorithms and data structures like a hash table.
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/// </returns>
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public override int GetHashCode()
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{
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if (_enumerable == null)
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{
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return 0;
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}
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return _enumerable.GetHashCode();
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}
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}
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}
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