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using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using StardewModdingAPI.Framework.Exceptions;
using StardewModdingAPI.Framework.Models;
namespace StardewModdingAPI.Framework.Serialisation
{
/// <summary>Overrides how SMAPI reads and writes <see cref="ISemanticVersion"/> and <see cref="IManifestDependency"/> fields.</summary>
internal class ManifestFieldConverter : JsonConverter
{
/*********
** Accessors
*********/
/// <summary>Whether this converter can write JSON.</summary>
public override bool CanWrite => false;
/*********
** Public methods
*********/
/// <summary>Get whether this instance can convert the specified object type.</summary>
/// <param name="objectType">The object type.</param>
public override bool CanConvert(Type objectType)
{
return objectType == typeof(ISemanticVersion) || objectType == typeof(IManifestDependency[]);
}
/// <summary>Reads the JSON representation of the object.</summary>
/// <param name="reader">The JSON reader.</param>
/// <param name="objectType">The object type.</param>
/// <param name="existingValue">The object being read.</param>
/// <param name="serializer">The calling serializer.</param>
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
// semantic version
if (objectType == typeof(ISemanticVersion))
{
JToken token = JToken.Load(reader);
switch (token.Type)
{
case JTokenType.Object:
{
JObject obj = (JObject)token;
int major = obj.Value<int>(nameof(ISemanticVersion.MajorVersion));
int minor = obj.Value<int>(nameof(ISemanticVersion.MinorVersion));
int patch = obj.Value<int>(nameof(ISemanticVersion.PatchVersion));
string build = obj.Value<string>(nameof(ISemanticVersion.Build));
return new SemanticVersion(major, minor, patch, build);
}
case JTokenType.String:
{
string str = token.Value<string>();
if (string.IsNullOrWhiteSpace(str))
return null;
if (!SemanticVersion.TryParse(str, out ISemanticVersion version))
throw new SParseException($"Can't parse semantic version from invalid value '{str}', should be formatted like 1.2, 1.2.30, or 1.2.30-beta.");
return version;
}
default:
throw new SParseException($"Can't parse semantic version from {token.Type}, must be an object or string.");
}
}
// manifest dependency
if (objectType == typeof(IManifestDependency[]))
{
List<IManifestDependency> result = new List<IManifestDependency>();
foreach (JObject obj in JArray.Load(reader).Children<JObject>())
{
string uniqueID = obj.Value<string>(nameof(IManifestDependency.UniqueID));
string minVersion = obj.Value<string>(nameof(IManifestDependency.MinimumVersion));
result.Add(new ManifestDependency(uniqueID, minVersion));
}
return result.ToArray();
}
// unknown
throw new NotSupportedException($"Unknown type '{objectType?.FullName}'.");
}
/// <summary>Writes the JSON representation of the object.</summary>
/// <param name="writer">The JSON writer.</param>
/// <param name="value">The value.</param>
/// <param name="serializer">The calling serializer.</param>
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
throw new InvalidOperationException("This converter does not write JSON.");
}
}
}
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