101 lines
4.3 KiB
C#
101 lines
4.3 KiB
C#
// This file is part of YamlDotNet - A .NET library for YAML.
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// Copyright (c) Antoine Aubry and contributors
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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// of the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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using System;
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using System.Runtime.Serialization;
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using YamlDotNet.Core;
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using YamlDotNet.Core.Events;
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using YamlDotNet.Serialization.Utilities;
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namespace YamlDotNet.Serialization.NodeDeserializers
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{
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public sealed class ObjectNodeDeserializer : INodeDeserializer
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{
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private readonly IObjectFactory objectFactory;
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private readonly ITypeInspector typeDescriptor;
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private readonly bool ignoreUnmatched;
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public ObjectNodeDeserializer(IObjectFactory objectFactory, ITypeInspector typeDescriptor, bool ignoreUnmatched)
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{
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this.objectFactory = objectFactory ?? throw new ArgumentNullException(nameof(objectFactory));
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this.typeDescriptor = typeDescriptor ?? throw new ArgumentNullException(nameof(typeDescriptor));
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this.ignoreUnmatched = ignoreUnmatched;
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}
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bool INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func<IParser, Type, object?> nestedObjectDeserializer, out object? value)
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{
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if (!parser.TryConsume<MappingStart>(out var mapping))
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{
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value = null;
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return false;
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}
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// Strip off the nullable type, if present. This is needed for nullable structs.
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var implementationType = Nullable.GetUnderlyingType(expectedType) ?? expectedType;
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value = objectFactory.Create(implementationType);
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while (!parser.TryConsume<MappingEnd>(out var _))
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{
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var propertyName = parser.Consume<Scalar>();
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try
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{
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var property = typeDescriptor.GetProperty(implementationType, null, propertyName.Value, ignoreUnmatched);
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if (property == null)
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{
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parser.SkipThisAndNestedEvents();
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continue;
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}
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var propertyValue = nestedObjectDeserializer(parser, property.Type);
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if (propertyValue is IValuePromise propertyValuePromise)
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{
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var valueRef = value;
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propertyValuePromise.ValueAvailable += v =>
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{
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var convertedValue = TypeConverter.ChangeType(v, property.Type);
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property.Write(valueRef, convertedValue);
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};
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}
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else
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{
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var convertedValue = TypeConverter.ChangeType(propertyValue, property.Type);
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property.Write(value, convertedValue);
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}
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}
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catch (SerializationException ex)
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{
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throw new YamlException(propertyName.Start, propertyName.End, ex.Message);
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}
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catch (YamlException)
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{
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throw;
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}
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catch (Exception ex)
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{
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throw new YamlException(propertyName.Start, propertyName.End, "Exception during deserialization", ex);
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}
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}
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return true;
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}
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}
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}
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