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Merge pull request #698 from EdwardCooke/ec-643-setonlyproperties
Allow set only properties during deserialization
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102 changes: 102 additions & 0 deletions
102
YamlDotNet/Serialization/TypeInspectors/WritablePropertiesTypeInspector.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| // This file is part of YamlDotNet - A .NET library for YAML. | ||
| // Copyright (c) Antoine Aubry and contributors | ||
| // | ||
| // 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. | ||
|
|
||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Reflection; | ||
| using YamlDotNet.Core; | ||
|
|
||
| namespace YamlDotNet.Serialization.TypeInspectors | ||
| { | ||
| /// <summary> | ||
| /// Returns the properties of a type that are writable. | ||
| /// </summary> | ||
| public sealed class WritablePropertiesTypeInspector : TypeInspectorSkeleton | ||
| { | ||
| private readonly ITypeResolver typeResolver; | ||
| private readonly bool includeNonPublicProperties; | ||
|
|
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| public WritablePropertiesTypeInspector(ITypeResolver typeResolver) | ||
| : this(typeResolver, false) | ||
| { | ||
| } | ||
|
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| public WritablePropertiesTypeInspector(ITypeResolver typeResolver, bool includeNonPublicProperties) | ||
| { | ||
| this.typeResolver = typeResolver ?? throw new ArgumentNullException(nameof(typeResolver)); | ||
| this.includeNonPublicProperties = includeNonPublicProperties; | ||
| } | ||
|
|
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| private static bool IsValidProperty(PropertyInfo property) | ||
| { | ||
| return property.CanWrite | ||
| && property.GetSetMethod(true)!.GetParameters().Length == 1; | ||
| } | ||
|
|
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| public override IEnumerable<IPropertyDescriptor> GetProperties(Type type, object? container) | ||
| { | ||
| return type | ||
| .GetProperties(includeNonPublicProperties) | ||
| .Where(IsValidProperty) | ||
| .Select(p => (IPropertyDescriptor)new ReflectionPropertyDescriptor(p, typeResolver)) | ||
| .ToArray(); | ||
| } | ||
|
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| private sealed class ReflectionPropertyDescriptor : IPropertyDescriptor | ||
| { | ||
| private readonly PropertyInfo propertyInfo; | ||
| private readonly ITypeResolver typeResolver; | ||
|
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| public ReflectionPropertyDescriptor(PropertyInfo propertyInfo, ITypeResolver typeResolver) | ||
| { | ||
| this.propertyInfo = propertyInfo ?? throw new ArgumentNullException(nameof(propertyInfo)); | ||
| this.typeResolver = typeResolver ?? throw new ArgumentNullException(nameof(typeResolver)); | ||
| ScalarStyle = ScalarStyle.Any; | ||
| } | ||
|
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| public string Name => propertyInfo.Name; | ||
| public Type Type => propertyInfo.PropertyType; | ||
| public Type? TypeOverride { get; set; } | ||
| public int Order { get; set; } | ||
| public bool CanWrite => propertyInfo.CanWrite; | ||
| public ScalarStyle ScalarStyle { get; set; } | ||
|
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| public void Write(object target, object? value) | ||
| { | ||
| propertyInfo.SetValue(target, value, null); | ||
| } | ||
|
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| public T GetCustomAttribute<T>() where T : Attribute | ||
| { | ||
| var attributes = propertyInfo.GetAllCustomAttributes<T>(); | ||
| return (T)attributes.FirstOrDefault(); | ||
| } | ||
|
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| public IObjectDescriptor Read(object target) | ||
| { | ||
| var propertyValue = propertyInfo.ReadValue(target); | ||
| var actualType = TypeOverride ?? typeResolver.Resolve(Type, propertyValue); | ||
| return new ObjectDescriptor(propertyValue, actualType, Type, ScalarStyle); | ||
| } | ||
| } | ||
| } | ||
| } |