104 lines
4.5 KiB
C#
104 lines
4.5 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.Collections.Generic;
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using YamlDotNet.Core;
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using YamlDotNet.Core.Events;
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using YamlDotNet.Serialization.NamingConventions;
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using YamlDotNet.Serialization.Utilities;
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namespace YamlDotNet.Serialization.ValueDeserializers
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{
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public sealed class NodeValueDeserializer : IValueDeserializer
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{
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private readonly IList<INodeDeserializer> deserializers;
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private readonly IList<INodeTypeResolver> typeResolvers;
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private readonly ITypeConverter typeConverter;
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private readonly INamingConvention enumNamingConvention;
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private readonly ITypeInspector typeInspector;
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public NodeValueDeserializer(IList<INodeDeserializer> deserializers,
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IList<INodeTypeResolver> typeResolvers,
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ITypeConverter typeConverter,
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INamingConvention enumNamingConvention,
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ITypeInspector typeInspector)
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{
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this.deserializers = deserializers ?? throw new ArgumentNullException(nameof(deserializers));
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this.typeResolvers = typeResolvers ?? throw new ArgumentNullException(nameof(typeResolvers));
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this.typeConverter = typeConverter ?? throw new ArgumentNullException(nameof(typeConverter));
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this.enumNamingConvention = enumNamingConvention ?? throw new ArgumentNullException(nameof(enumNamingConvention));
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this.typeInspector = typeInspector;
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}
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public object? DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
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{
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parser.Accept<NodeEvent>(out var nodeEvent);
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var nodeType = GetTypeFromEvent(nodeEvent, expectedType);
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var rootDeserializer = new ObjectDeserializer(x => DeserializeValue(parser, x, state, nestedObjectDeserializer));
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try
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{
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foreach (var deserializer in deserializers)
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{
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var result = deserializer.Deserialize(parser, nodeType, (r, t) => nestedObjectDeserializer.DeserializeValue(r, t, state, nestedObjectDeserializer), out var value, rootDeserializer);
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if (result)
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{
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return typeConverter.ChangeType(value, expectedType, enumNamingConvention, typeInspector);
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}
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}
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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(
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nodeEvent?.Start ?? Mark.Empty,
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nodeEvent?.End ?? Mark.Empty,
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"Exception during deserialization",
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ex
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);
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}
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throw new YamlException(
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nodeEvent?.Start ?? Mark.Empty,
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nodeEvent?.End ?? Mark.Empty,
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$"No node deserializer was able to deserialize the node into type {expectedType.AssemblyQualifiedName}"
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);
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}
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private Type GetTypeFromEvent(NodeEvent? nodeEvent, Type currentType)
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{
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foreach (var typeResolver in typeResolvers)
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{
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if (typeResolver.Resolve(nodeEvent, ref currentType))
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{
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break;
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}
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}
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return currentType;
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}
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}
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}
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