48 lines
1.5 KiB
C#

using Syntriax.Engine.Core;
using YamlDotNet.Core;
using YamlDotNet.Core.Events;
using YamlDotNet.Serialization;
namespace Syntriax.Engine.Serialization;
public class Shape2DConverter : IEngineTypeYamlConverter
{
public bool Accepts(Type type) => type == typeof(Shape2D);
public object? ReadYaml(IParser parser, Type type, ObjectDeserializer rootDeserializer)
{
parser.Consume<MappingStart>();
if (parser.Consume<Scalar>().Value.CompareTo(nameof(Shape2D.Vertices)) != 0)
throw new ArgumentException($"{nameof(Shape2D)} mapping have a {nameof(Shape2D.Vertices)}");
parser.Consume<SequenceStart>();
List<Vector2D> vertices = [];
while (!parser.TryConsume<SequenceEnd>(out _))
{
Vector2D vertex = (Vector2D)rootDeserializer(typeof(Vector2D))!;
vertices.Add(vertex);
}
parser.Consume<MappingEnd>();
return new Shape2D(vertices);
}
public void WriteYaml(IEmitter emitter, object? value, Type type, ObjectSerializer serializer)
{
Shape2D shape2D = (Shape2D)value!;
emitter.Emit(new MappingStart());
emitter.Emit(new Scalar(nameof(Shape2D.Vertices)));
emitter.Emit(new SequenceStart(anchor: null, tag: null, isImplicit: false, style: SequenceStyle.Block));
foreach (Vector2D vertex in shape2D.Vertices)
serializer(vertex, typeof(Vector2D));
emitter.Emit(new SequenceEnd());
emitter.Emit(new MappingEnd());
}
}