112 lines
4.1 KiB
C#
112 lines
4.1 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 System.Diagnostics.CodeAnalysis;
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using YamlDotNet.Core;
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namespace YamlDotNet.RepresentationModel
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{
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/// <summary>
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/// Manages the state of a <see cref="YamlDocument" /> while it is loading.
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/// </summary>
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internal class DocumentLoadingState
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{
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private readonly IDictionary<AnchorName, YamlNode> anchors = new Dictionary<AnchorName, YamlNode>();
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private readonly IList<YamlNode> nodesWithUnresolvedAliases = new List<YamlNode>();
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/// <summary>
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/// Adds the specified node to the anchor list.
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/// </summary>
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/// <param name="node">The node.</param>
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public void AddAnchor(YamlNode node)
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{
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if (node.Anchor.IsEmpty)
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{
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throw new ArgumentException("The specified node does not have an anchor");
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}
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if (anchors.ContainsKey(node.Anchor))
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{
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anchors[node.Anchor] = node;
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}
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else
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{
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anchors.Add(node.Anchor, node);
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}
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}
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/// <summary>
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/// Gets the node with the specified anchor.
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/// </summary>
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/// <param name="anchor">The anchor.</param>
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/// <param name="start">The start position.</param>
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/// <param name="end">The end position.</param>
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/// <returns></returns>
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/// <exception cref="AnchorNotFoundException">if there is no node with that anchor.</exception>
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public YamlNode GetNode(AnchorName anchor, Mark start, Mark end)
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{
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if (anchors.TryGetValue(anchor, out var target))
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{
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return target;
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}
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else
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{
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throw new AnchorNotFoundException(start, end, $"The anchor '{anchor}' does not exists");
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}
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}
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/// <summary>
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/// Gets the node with the specified anchor.
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/// </summary>
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/// <param name="anchor">The anchor.</param>
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/// <param name="node">The node that was retrieved.</param>
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/// <returns>true if the anchor was found; otherwise false.</returns>
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public bool TryGetNode(AnchorName anchor, [NotNullWhen(true)] out YamlNode? node)
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{
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return anchors.TryGetValue(anchor, out node);
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}
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/// <summary>
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/// Adds the specified node to the collection of nodes with unresolved aliases.
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/// </summary>
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/// <param name="node">
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/// The <see cref="YamlNode"/> that has unresolved aliases.
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/// </param>
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public void AddNodeWithUnresolvedAliases(YamlNode node)
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{
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nodesWithUnresolvedAliases.Add(node);
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}
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/// <summary>
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/// Resolves the aliases that could not be resolved while loading the document.
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/// </summary>
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public void ResolveAliases()
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{
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foreach (var node in nodesWithUnresolvedAliases)
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{
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node.ResolveAliases(this);
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}
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}
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}
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}
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