#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 #if !NET20 using System; using System.Dynamic; using System.Runtime.CompilerServices; using Newtonsoft.Json.Utilities; namespace Newtonsoft.Json.Serialization { /// <summary> /// Contract details for a <see cref="Type"/> used by the <see cref="JsonSerializer"/>. /// </summary> internal class JsonDynamicContract : JsonContainerContract { /// <summary> /// Gets the object's properties. /// </summary> /// <value>The object's properties.</value> public JsonPropertyCollection Properties { get; } /// <summary> /// Gets or sets the property name resolver. /// </summary> /// <value>The property name resolver.</value> public Func<string, string> PropertyNameResolver { get; set; } private readonly ThreadSafeStore<string, CallSite<Func<CallSite, object, object>>> _callSiteGetters = new ThreadSafeStore<string, CallSite<Func<CallSite, object, object>>>(CreateCallSiteGetter); private readonly ThreadSafeStore<string, CallSite<Func<CallSite, object, object, object>>> _callSiteSetters = new ThreadSafeStore<string, CallSite<Func<CallSite, object, object, object>>>(CreateCallSiteSetter); private static CallSite<Func<CallSite, object, object>> CreateCallSiteGetter(string name) { GetMemberBinder getMemberBinder = (GetMemberBinder)DynamicUtils.BinderWrapper.GetMember(name, typeof(DynamicUtils)); return CallSite<Func<CallSite, object, object>>.Create(new NoThrowGetBinderMember(getMemberBinder)); } private static CallSite<Func<CallSite, object, object, object>> CreateCallSiteSetter(string name) { SetMemberBinder binder = (SetMemberBinder)DynamicUtils.BinderWrapper.SetMember(name, typeof(DynamicUtils)); return CallSite<Func<CallSite, object, object, object>>.Create(new NoThrowSetBinderMember(binder)); } /// <summary> /// Initializes a new instance of the <see cref="JsonDynamicContract"/> class. /// </summary> /// <param name="underlyingType">The underlying type for the contract.</param> public JsonDynamicContract(Type underlyingType) : base(underlyingType) { ContractType = JsonContractType.Dynamic; Properties = new JsonPropertyCollection(UnderlyingType); } internal bool TryGetMember(IDynamicMetaObjectProvider dynamicProvider, string name, out object value) { ValidationUtils.ArgumentNotNull(dynamicProvider, nameof(dynamicProvider)); CallSite<Func<CallSite, object, object>> callSite = _callSiteGetters.Get(name); object result = callSite.Target(callSite, dynamicProvider); if (!ReferenceEquals(result, NoThrowExpressionVisitor.ErrorResult)) { value = result; return true; } else { value = null; return false; } } internal bool TrySetMember(IDynamicMetaObjectProvider dynamicProvider, string name, object value) { ValidationUtils.ArgumentNotNull(dynamicProvider, nameof(dynamicProvider)); CallSite<Func<CallSite, object, object, object>> callSite = _callSiteSetters.Get(name); object result = callSite.Target(callSite, dynamicProvider, value); return !ReferenceEquals(result, NoThrowExpressionVisitor.ErrorResult); } } } #endif