#region License // Copyright (c) 2007 James Newton-King // // Permission is hereby granted, free of charge, to any person // obtaining a copy of this software and associated documentation // files (the "Software"), to deal in the Software without // restriction, including without limitation the rights to use, // copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following // conditions: // // The above copyright notice and this permission notice shall be // included in all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR // OTHER DEALINGS IN THE SOFTWARE. #endregion using System; using System.Collections.Generic; using System.Globalization; using Newtonsoft.Json.Utilities; namespace Newtonsoft.Json.Serialization { internal readonly struct ResolverContractKey : IEquatable<ResolverContractKey> { private readonly Type _resolverType; private readonly Type _contractType; public ResolverContractKey(Type resolverType, Type contractType) { _resolverType = resolverType; _contractType = contractType; } public override int GetHashCode() { return _resolverType.GetHashCode() ^ _contractType.GetHashCode(); } public override bool Equals(object obj) { if (!(obj is ResolverContractKey)) { return false; } return Equals((ResolverContractKey)obj); } public bool Equals(ResolverContractKey other) { return (_resolverType == other._resolverType && _contractType == other._contractType); } } /// <summary> /// Resolves member mappings for a type, camel casing property names. /// </summary> internal class CamelCasePropertyNamesContractResolver : DefaultContractResolver { private static readonly object TypeContractCacheLock = new object(); private static readonly PropertyNameTable NameTable = new PropertyNameTable(); private static Dictionary<ResolverContractKey, JsonContract> _contractCache; /// <summary> /// Initializes a new instance of the <see cref="CamelCasePropertyNamesContractResolver"/> class. /// </summary> public CamelCasePropertyNamesContractResolver() { NamingStrategy = new CamelCaseNamingStrategy { ProcessDictionaryKeys = true, OverrideSpecifiedNames = true }; } /// <summary> /// Resolves the contract for a given type. /// </summary> /// <param name="type">The type to resolve a contract for.</param> /// <returns>The contract for a given type.</returns> public override JsonContract ResolveContract(Type type) { if (type == null) { throw new ArgumentNullException(nameof(type)); } // for backwards compadibility the CamelCasePropertyNamesContractResolver shares contracts between instances JsonContract contract; ResolverContractKey key = new ResolverContractKey(GetType(), type); Dictionary<ResolverContractKey, JsonContract> cache = _contractCache; if (cache == null || !cache.TryGetValue(key, out contract)) { contract = CreateContract(type); // avoid the possibility of modifying the cache dictionary while another thread is accessing it lock (TypeContractCacheLock) { cache = _contractCache; Dictionary<ResolverContractKey, JsonContract> updatedCache = (cache != null) ? new Dictionary<ResolverContractKey, JsonContract>(cache) : new Dictionary<ResolverContractKey, JsonContract>(); updatedCache[key] = contract; _contractCache = updatedCache; } } return contract; } internal override PropertyNameTable GetNameTable() { return NameTable; } } }