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#region License
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/* FNA - XNA4 Reimplementation for Desktop Platforms
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* Copyright 2009-2020 Ethan Lee and the MonoGame Team
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*
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* Released under the Microsoft Public License.
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* See LICENSE for details.
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*/
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#endregion
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#region Using Statements
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using System;
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using System.Collections.Generic;
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#endregion
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namespace Microsoft.Xna.Framework.Content
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{
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internal class DictionaryReader<TKey, TValue> : ContentTypeReader<Dictionary<TKey, TValue>>
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{
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#region Public Properties
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public override bool CanDeserializeIntoExistingObject
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{
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get
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{
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return true;
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}
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}
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#endregion
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#region Private Variables
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ContentTypeReader keyReader;
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ContentTypeReader valueReader;
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Type keyType;
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Type valueType;
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#endregion
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#region Public Constructor
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public DictionaryReader()
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{
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}
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#endregion
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#region Protected Initialization Method
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protected internal override void Initialize(ContentTypeReaderManager manager)
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{
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keyType = typeof(TKey);
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valueType = typeof(TValue);
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keyReader = manager.GetTypeReader(keyType);
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valueReader = manager.GetTypeReader(valueType);
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}
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#endregion
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#region Protected Read Method
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protected internal override Dictionary<TKey, TValue> Read(ContentReader input, Dictionary<TKey, TValue> existingInstance)
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{
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int count = input.ReadInt32();
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Dictionary<TKey, TValue> dictionary = existingInstance;
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if (dictionary == null)
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{
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dictionary = new Dictionary<TKey, TValue>(count);
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}
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else
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{
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dictionary.Clear();
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}
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for (int i = 0; i < count; i += 1)
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{
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TKey key;
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TValue value;
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if (keyType.IsValueType)
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{
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key = input.ReadObject<TKey>(keyReader);
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}
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else
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{
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int readerType = input.Read7BitEncodedInt();
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key = (readerType > 0) ? input.ReadObject<TKey>(input.TypeReaders[readerType - 1]) : default(TKey);
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}
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if (valueType.IsValueType)
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{
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value = input.ReadObject<TValue>(valueReader);
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}
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else
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{
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int readerType = input.Read7BitEncodedInt();
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value = (readerType > 0) ? input.ReadObject<TValue>(input.TypeReaders[readerType - 1]) : default(TValue);
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}
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dictionary.Add(key, value);
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}
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return dictionary;
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}
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#endregion
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}
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}
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