Import YamlDotNet.

Assets/YamlDotNet/Core/Events/SequenceStart.cs

@@ -0,0 +1,105 @@
+// 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.
+
+namespace YamlDotNet.Core.Events
+{
+    /// <summary>
+    /// Represents a sequence start event.
+    /// </summary>
+    public sealed class SequenceStart : NodeEvent
+    {
+        /// <summary>
+        /// Gets a value indicating the variation of depth caused by this event.
+        /// The value can be either -1, 0 or 1. For start events, it will be 1,
+        /// for end events, it will be -1, and for the remaining events, it will be 0.
+        /// </summary>
+        public override int NestingIncrease => 1;
+
+        /// <summary>
+        /// Gets the event type, which allows for simpler type comparisons.
+        /// </summary>
+        internal override EventType Type => EventType.SequenceStart;
+
+        /// <summary>
+        /// Gets a value indicating whether this instance is implicit.
+        /// </summary>
+        /// <value>
+        ///     <c>true</c> if this instance is implicit; otherwise, <c>false</c>.
+        /// </value>
+        public bool IsImplicit { get; }
+
+        /// <summary>
+        /// Gets a value indicating whether this instance is canonical.
+        /// </summary>
+        /// <value></value>
+        public override bool IsCanonical => !IsImplicit;
+
+        /// <summary>
+        /// Gets the style.
+        /// </summary>
+        /// <value>The style.</value>
+        public SequenceStyle Style { get; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SequenceStart"/> class.
+        /// </summary>
+        /// <param name="anchor">The anchor.</param>
+        /// <param name="tag">The tag.</param>
+        /// <param name="isImplicit">if set to <c>true</c> [is implicit].</param>
+        /// <param name="style">The style.</param>
+        /// <param name="start">The start position of the event.</param>
+        /// <param name="end">The end position of the event.</param>
+        public SequenceStart(AnchorName anchor, TagName tag, bool isImplicit, SequenceStyle style, Mark start, Mark end)
+            : base(anchor, tag, start, end)
+        {
+            this.IsImplicit = isImplicit;
+            this.Style = style;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SequenceStart"/> class.
+        /// </summary>
+        public SequenceStart(AnchorName anchor, TagName tag, bool isImplicit, SequenceStyle style)
+            : this(anchor, tag, isImplicit, style, Mark.Empty, Mark.Empty)
+        {
+        }
+
+        /// <summary>
+        /// Returns a <see cref="T:System.String"/> that represents the current <see cref="T:System.Object"/>.
+        /// </summary>
+        /// <returns>
+        /// A <see cref="T:System.String"/> that represents the current <see cref="T:System.Object"/>.
+        /// </returns>
+        public override string ToString()
+        {
+            return $"Sequence start [anchor = {Anchor}, tag = {Tag}, isImplicit = {IsImplicit}, style = {Style}]";
+        }
+
+        /// <summary>
+        /// Invokes run-time type specific Visit() method of the specified visitor.
+        /// </summary>
+        /// <param name="visitor">visitor, may not be null.</param>
+        public override void Accept(IParsingEventVisitor visitor)
+        {
+            visitor.Visit(this);
+        }
+    }
+}