Import YamlDotNet.

2022-12-12 22:23:49 +08:00
parent f559cea826
commit 1477e907e6
462 changed files with 27142 additions and 0 deletions
--- a/Assets/YamlDotNet/Serialization/ObjectGraphVisitors/AnchorAssigningObjectGraphVisitor.cs
+++ b/Assets/YamlDotNet/Serialization/ObjectGraphVisitors/AnchorAssigningObjectGraphVisitor.cs
@@ -0,0 +1,78 @@
+// 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 YamlDotNet.Core;
+
+namespace YamlDotNet.Serialization.ObjectGraphVisitors
+{
+    public sealed class AnchorAssigningObjectGraphVisitor : ChainedObjectGraphVisitor
+    {
+        private readonly IEventEmitter eventEmitter;
+        private readonly IAliasProvider aliasProvider;
+        private readonly HashSet<AnchorName> emittedAliases = new HashSet<AnchorName>();
+
+        public AnchorAssigningObjectGraphVisitor(IObjectGraphVisitor<IEmitter> nextVisitor, IEventEmitter eventEmitter, IAliasProvider aliasProvider)
+            : base(nextVisitor)
+        {
+            this.eventEmitter = eventEmitter;
+            this.aliasProvider = aliasProvider;
+        }
+
+        public override bool Enter(IObjectDescriptor value, IEmitter context)
+        {
+            if (value.Value != null)
+            {
+                var alias = aliasProvider.GetAlias(value.Value);
+                if (!alias.IsEmpty && !emittedAliases.Add(alias))
+                {
+                    var aliasEventInfo = new AliasEventInfo(value, alias);
+                    eventEmitter.Emit(aliasEventInfo, context);
+                    return aliasEventInfo.NeedsExpansion;
+                }
+            }
+            return base.Enter(value, context);
+        }
+
+        public override void VisitMappingStart(IObjectDescriptor mapping, Type keyType, Type valueType, IEmitter context)
+        {
+            var anchor = aliasProvider.GetAlias(mapping.NonNullValue());
+            eventEmitter.Emit(new MappingStartEventInfo(mapping) { Anchor = anchor }, context);
+        }
+
+        public override void VisitSequenceStart(IObjectDescriptor sequence, Type elementType, IEmitter context)
+        {
+            var anchor = aliasProvider.GetAlias(sequence.NonNullValue());
+            eventEmitter.Emit(new SequenceStartEventInfo(sequence) { Anchor = anchor }, context);
+        }
+
+        public override void VisitScalar(IObjectDescriptor scalar, IEmitter context)
+        {
+            var scalarInfo = new ScalarEventInfo(scalar);
+            if (scalar.Value != null)
+            {
+                scalarInfo.Anchor = aliasProvider.GetAlias(scalar.Value);
+            }
+            eventEmitter.Emit(scalarInfo, context);
+        }
+    }
+}